diff options
Diffstat (limited to 'mesalib/src')
| -rw-r--r-- | mesalib/src/SConscript | 39 | ||||
| -rw-r--r-- | mesalib/src/glsl/SConscript | 303 | ||||
| -rw-r--r-- | mesalib/src/glsl/ast_to_hir.cpp | 6403 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/extensions.c | 1837 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/fbobject.c | 4826 | ||||
| -rw-r--r-- | mesalib/src/mesa/main/mtypes.h | 6635 |
6 files changed, 10053 insertions, 9990 deletions
diff --git a/mesalib/src/SConscript b/mesalib/src/SConscript index f730151c2..201812c5a 100644 --- a/mesalib/src/SConscript +++ b/mesalib/src/SConscript @@ -1,18 +1,21 @@ -Import('*')
-
-if env['platform'] == 'windows':
- SConscript('getopt/SConscript')
- SConscript('talloc/SConscript')
-
-SConscript('glsl/SConscript')
-SConscript('mapi/glapi/SConscript')
-SConscript('mesa/SConscript')
-
-SConscript('mapi/vgapi/SConscript')
-
-if env['platform'] != 'embedded':
- SConscript('egl/main/SConscript')
- SConscript('glut/glx/SConscript')
-
-SConscript('gallium/SConscript')
-
+Import('*') + +if env['platform'] == 'windows': + SConscript('getopt/SConscript') + SConscript('talloc/SConscript') +else: + talloc = 'talloc' + Export('talloc') + +SConscript('glsl/SConscript') +SConscript('mapi/glapi/SConscript') +SConscript('mesa/SConscript') + +SConscript('mapi/vgapi/SConscript') + +if env['platform'] != 'embedded': + SConscript('egl/main/SConscript') + SConscript('glut/glx/SConscript') + +SConscript('gallium/SConscript') + diff --git a/mesalib/src/glsl/SConscript b/mesalib/src/glsl/SConscript index 1d5ef9e8f..88a83fdb6 100644 --- a/mesalib/src/glsl/SConscript +++ b/mesalib/src/glsl/SConscript @@ -1,147 +1,156 @@ -import common
-
-Import('*')
-
-from sys import executable as python_cmd
-
-env = env.Clone()
-
-env.Prepend(CPPPATH = [
- '#src/mapi',
- '#src/mesa',
-])
-
-if env['platform'] == 'windows':
- env.Prepend(CPPPATH = ['#src/talloc'])
-
-sources = [
- 'glcpp/glcpp-lex.c',
- 'glcpp/glcpp-parse.c',
- 'glcpp/pp.c',
- 'ast_expr.cpp',
- 'ast_function.cpp',
- 'ast_to_hir.cpp',
- 'ast_type.cpp',
- 'glsl_lexer.cpp',
- 'glsl_parser.cpp',
- 'glsl_parser_extras.cpp',
- 'glsl_types.cpp',
- 'glsl_symbol_table.cpp',
- 'hir_field_selection.cpp',
- 'ir_basic_block.cpp',
- 'ir_clone.cpp',
- 'ir_constant_expression.cpp',
- 'ir.cpp',
- 'ir_expression_flattening.cpp',
- 'ir_function_can_inline.cpp',
- 'ir_function.cpp',
- 'ir_hierarchical_visitor.cpp',
- 'ir_hv_accept.cpp',
- 'ir_import_prototypes.cpp',
- 'ir_print_visitor.cpp',
- 'ir_reader.cpp',
- 'ir_rvalue_visitor.cpp',
- 'ir_set_program_inouts.cpp',
- 'ir_validate.cpp',
- 'ir_variable.cpp',
- 'ir_variable_refcount.cpp',
- 'linker.cpp',
- 'link_functions.cpp',
- 'loop_analysis.cpp',
- 'loop_controls.cpp',
- 'loop_unroll.cpp',
- 'lower_discard.cpp',
- 'lower_if_to_cond_assign.cpp',
- 'lower_instructions.cpp',
- 'lower_jumps.cpp',
- 'lower_mat_op_to_vec.cpp',
- 'lower_noise.cpp',
- 'lower_variable_index_to_cond_assign.cpp',
- 'lower_vec_index_to_cond_assign.cpp',
- 'lower_vec_index_to_swizzle.cpp',
- 'lower_vector.cpp',
- 'opt_algebraic.cpp',
- 'opt_constant_folding.cpp',
- 'opt_constant_propagation.cpp',
- 'opt_constant_variable.cpp',
- 'opt_copy_propagation.cpp',
- 'opt_dead_code.cpp',
- 'opt_dead_code_local.cpp',
- 'opt_dead_functions.cpp',
- 'opt_discard_simplification.cpp',
- 'opt_function_inlining.cpp',
- 'opt_if_simplification.cpp',
- 'opt_noop_swizzle.cpp',
- 'opt_redundant_jumps.cpp',
- 'opt_structure_splitting.cpp',
- 'opt_swizzle_swizzle.cpp',
- 'opt_tree_grafting.cpp',
- 's_expression.cpp',
- 'strtod.c',
-]
-
-if env['msvc']:
- env.Prepend(CPPPATH = ['#/src/getopt'])
- env.PrependUnique(LIBS = [getopt])
-
-if env['platform'] == 'windows':
- env.Prepend(LIBS = [talloc])
-else:
- env.Prepend(LIBS = ['talloc'])
-
-env.Append(CPPPATH = ['#/src/glsl'])
-
-builtin_compiler = env.Program(
- target = 'builtin_compiler',
- source = sources + ['main.cpp', 'builtin_stubs.cpp',
- '#src/mesa/program/hash_table.c',
- '#src/mesa/program/symbol_table.c'],
-)
-
-env.CodeGenerate(
- target = 'builtin_function.cpp',
- script = 'builtins/tools/generate_builtins.py',
- source = builtin_compiler,
- command = python_cmd + ' $SCRIPT $SOURCE > $TARGET'
-)
-
-env.Depends('builtin_function.cpp', ['builtins/tools/generate_builtins.py', 'builtins/tools/texture_builtins.py'] + Glob('builtins/ir/*'))
-
-if env['msvc']:
- # There is no LD_LIBRARY_PATH equivalent on Windows. We need to ensure
- # talloc.dll is on the same dir as builtin_function.
- talloc_dll_src = talloc.dir.File('talloc.dll')
- talloc_dll_dst = builtin_compiler[0].dir.File('talloc.dll')
- talloc_dll = env.Command(talloc_dll_dst, talloc_dll_src, Copy(talloc_dll_dst, talloc_dll_src))
- env.Depends('builtin_function.cpp', talloc_dll)
-
-glsl = env.ConvenienceLibrary(
- target = 'glsl',
- source = sources + [ 'builtin_function.cpp' ],
-)
-
-Export('glsl')
-
-# FIXME: We can't build the programs because there's a cyclic dependency between tis directory and src/mesa
-Return()
-
-env = env.Clone()
-
-if env['platform'] == 'windows':
- env.PrependUnique(LIBS = [
- 'user32',
- ])
-
-env.Prepend(LIBS = [glsl, talloc])
-
-env.Program(
- target = 'glsl2',
- source = [
- 'main.cpp',
- ]
-)
-
-env.Program(
- target = 'glcpp',
- source = ['glcpp/glcpp.c'],
-)
+import common + +Import('*') + +from sys import executable as python_cmd + +env = env.Clone() + +env.Prepend(CPPPATH = [ + '#src/mapi', + '#src/mesa', + '#src/glsl', +]) + +if env['platform'] == 'windows': + env.Prepend(CPPPATH = ['#src/talloc']) + +sources = [ + 'glcpp/glcpp-lex.c', + 'glcpp/glcpp-parse.c', + 'glcpp/pp.c', + 'ast_expr.cpp', + 'ast_function.cpp', + 'ast_to_hir.cpp', + 'ast_type.cpp', + 'glsl_lexer.cpp', + 'glsl_parser.cpp', + 'glsl_parser_extras.cpp', + 'glsl_types.cpp', + 'glsl_symbol_table.cpp', + 'hir_field_selection.cpp', + 'ir_basic_block.cpp', + 'ir_clone.cpp', + 'ir_constant_expression.cpp', + 'ir.cpp', + 'ir_expression_flattening.cpp', + 'ir_function_can_inline.cpp', + 'ir_function.cpp', + 'ir_hierarchical_visitor.cpp', + 'ir_hv_accept.cpp', + 'ir_import_prototypes.cpp', + 'ir_print_visitor.cpp', + 'ir_reader.cpp', + 'ir_rvalue_visitor.cpp', + 'ir_set_program_inouts.cpp', + 'ir_validate.cpp', + 'ir_variable.cpp', + 'ir_variable_refcount.cpp', + 'linker.cpp', + 'link_functions.cpp', + 'loop_analysis.cpp', + 'loop_controls.cpp', + 'loop_unroll.cpp', + 'lower_discard.cpp', + 'lower_if_to_cond_assign.cpp', + 'lower_instructions.cpp', + 'lower_jumps.cpp', + 'lower_mat_op_to_vec.cpp', + 'lower_noise.cpp', + 'lower_variable_index_to_cond_assign.cpp', + 'lower_vec_index_to_cond_assign.cpp', + 'lower_vec_index_to_swizzle.cpp', + 'lower_vector.cpp', + 'opt_algebraic.cpp', + 'opt_constant_folding.cpp', + 'opt_constant_propagation.cpp', + 'opt_constant_variable.cpp', + 'opt_copy_propagation.cpp', + 'opt_dead_code.cpp', + 'opt_dead_code_local.cpp', + 'opt_dead_functions.cpp', + 'opt_discard_simplification.cpp', + 'opt_function_inlining.cpp', + 'opt_if_simplification.cpp', + 'opt_noop_swizzle.cpp', + 'opt_redundant_jumps.cpp', + 'opt_structure_splitting.cpp', + 'opt_swizzle_swizzle.cpp', + 'opt_tree_grafting.cpp', + 's_expression.cpp', + 'strtod.c', +] + + +if env['platform'] == common.host_platform: + if env['msvc']: + env.Prepend(CPPPATH = ['#/src/getopt']) + env.PrependUnique(LIBS = [getopt]) + + if env['platform'] == 'windows': + env.Prepend(CPPPATH = ['#src/talloc']) + env.Prepend(LIBS = [talloc]) + else: + env.Prepend(LIBS = ['talloc']) + + builtin_compiler = env.Program( + target = 'builtin_compiler', + source = sources + ['main.cpp', 'builtin_stubs.cpp', + '#src/mesa/program/hash_table.c', + '#src/mesa/program/symbol_table.c'], + ) + + builtin_glsl_function = env.CodeGenerate( + target = 'builtin_function.cpp', + script = 'builtins/tools/generate_builtins.py', + source = builtin_compiler, + command = python_cmd + ' $SCRIPT $SOURCE > $TARGET' + ) + + env.Depends(builtin_glsl_function, ['builtins/tools/generate_builtins.py', 'builtins/tools/texture_builtins.py'] + Glob('builtins/ir/*')) + + if env['msvc']: + # There is no LD_LIBRARY_PATH equivalent on Windows. We need to ensure + # talloc.dll is on the same dir as builtin_function. + talloc_dll_src = talloc.dir.File('talloc.dll') + talloc_dll_dst = builtin_compiler[0].dir.File('talloc.dll') + talloc_dll = env.Command(talloc_dll_dst, talloc_dll_src, Copy(talloc_dll_dst, talloc_dll_src)) + env.Depends('builtin_function.cpp', talloc_dll) + + Export('builtin_glsl_function') + + if common.cross_compiling: + Return() + +sources += builtin_glsl_function + +glsl = env.ConvenienceLibrary( + target = 'glsl', + source = sources, +) + +Export('glsl') + +# FIXME: We can't build the programs because there's a cyclic dependency between tis directory and src/mesa +Return() + +env = env.Clone() + +if env['platform'] == 'windows': + env.PrependUnique(LIBS = [ + 'user32', + ]) + +env.Prepend(LIBS = [glsl, talloc]) + +env.Program( + target = 'glsl2', + source = [ + 'main.cpp', + ] +) + +env.Program( + target = 'glcpp', + source = ['glcpp/glcpp.c'], +) diff --git a/mesalib/src/glsl/ast_to_hir.cpp b/mesalib/src/glsl/ast_to_hir.cpp index ef209d078..365a6e267 100644 --- a/mesalib/src/glsl/ast_to_hir.cpp +++ b/mesalib/src/glsl/ast_to_hir.cpp @@ -1,3177 +1,3226 @@ -/*
- * Copyright © 2010 Intel Corporation
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file ast_to_hir.c
- * Convert abstract syntax to to high-level intermediate reprensentation (HIR).
- *
- * During the conversion to HIR, the majority of the symantic checking is
- * preformed on the program. This includes:
- *
- * * Symbol table management
- * * Type checking
- * * Function binding
- *
- * The majority of this work could be done during parsing, and the parser could
- * probably generate HIR directly. However, this results in frequent changes
- * to the parser code. Since we do not assume that every system this complier
- * is built on will have Flex and Bison installed, we have to store the code
- * generated by these tools in our version control system. In other parts of
- * the system we've seen problems where a parser was changed but the generated
- * code was not committed, merge conflicts where created because two developers
- * had slightly different versions of Bison installed, etc.
- *
- * I have also noticed that running Bison generated parsers in GDB is very
- * irritating. When you get a segfault on '$$ = $1->foo', you can't very
- * well 'print $1' in GDB.
- *
- * As a result, my preference is to put as little C code as possible in the
- * parser (and lexer) sources.
- */
-
-#include "main/core.h" /* for struct gl_extensions */
-#include "glsl_symbol_table.h"
-#include "glsl_parser_extras.h"
-#include "ast.h"
-#include "glsl_types.h"
-#include "ir.h"
-
-void
-_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state)
-{
- _mesa_glsl_initialize_variables(instructions, state);
- _mesa_glsl_initialize_functions(state);
-
- state->symbols->language_version = state->language_version;
-
- state->current_function = NULL;
-
- /* Section 4.2 of the GLSL 1.20 specification states:
- * "The built-in functions are scoped in a scope outside the global scope
- * users declare global variables in. That is, a shader's global scope,
- * available for user-defined functions and global variables, is nested
- * inside the scope containing the built-in functions."
- *
- * Since built-in functions like ftransform() access built-in variables,
- * it follows that those must be in the outer scope as well.
- *
- * We push scope here to create this nesting effect...but don't pop.
- * This way, a shader's globals are still in the symbol table for use
- * by the linker.
- */
- state->symbols->push_scope();
-
- foreach_list_typed (ast_node, ast, link, & state->translation_unit)
- ast->hir(instructions, state);
-}
-
-
-/**
- * If a conversion is available, convert one operand to a different type
- *
- * The \c from \c ir_rvalue is converted "in place".
- *
- * \param to Type that the operand it to be converted to
- * \param from Operand that is being converted
- * \param state GLSL compiler state
- *
- * \return
- * If a conversion is possible (or unnecessary), \c true is returned.
- * Otherwise \c false is returned.
- */
-bool
-apply_implicit_conversion(const glsl_type *to, ir_rvalue * &from,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- if (to->base_type == from->type->base_type)
- return true;
-
- /* This conversion was added in GLSL 1.20. If the compilation mode is
- * GLSL 1.10, the conversion is skipped.
- */
- if (state->language_version < 120)
- return false;
-
- /* From page 27 (page 33 of the PDF) of the GLSL 1.50 spec:
- *
- * "There are no implicit array or structure conversions. For
- * example, an array of int cannot be implicitly converted to an
- * array of float. There are no implicit conversions between
- * signed and unsigned integers."
- */
- /* FINISHME: The above comment is partially a lie. There is int/uint
- * FINISHME: conversion for immediate constants.
- */
- if (!to->is_float() || !from->type->is_numeric())
- return false;
-
- /* Convert to a floating point type with the same number of components
- * as the original type - i.e. int to float, not int to vec4.
- */
- to = glsl_type::get_instance(GLSL_TYPE_FLOAT, from->type->vector_elements,
- from->type->matrix_columns);
-
- switch (from->type->base_type) {
- case GLSL_TYPE_INT:
- from = new(ctx) ir_expression(ir_unop_i2f, to, from, NULL);
- break;
- case GLSL_TYPE_UINT:
- from = new(ctx) ir_expression(ir_unop_u2f, to, from, NULL);
- break;
- case GLSL_TYPE_BOOL:
- from = new(ctx) ir_expression(ir_unop_b2f, to, from, NULL);
- break;
- default:
- assert(0);
- }
-
- return true;
-}
-
-
-static const struct glsl_type *
-arithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b,
- bool multiply,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- const glsl_type *type_a = value_a->type;
- const glsl_type *type_b = value_b->type;
-
- /* From GLSL 1.50 spec, page 56:
- *
- * "The arithmetic binary operators add (+), subtract (-),
- * multiply (*), and divide (/) operate on integer and
- * floating-point scalars, vectors, and matrices."
- */
- if (!type_a->is_numeric() || !type_b->is_numeric()) {
- _mesa_glsl_error(loc, state,
- "Operands to arithmetic operators must be numeric");
- return glsl_type::error_type;
- }
-
-
- /* "If one operand is floating-point based and the other is
- * not, then the conversions from Section 4.1.10 "Implicit
- * Conversions" are applied to the non-floating-point-based operand."
- */
- if (!apply_implicit_conversion(type_a, value_b, state)
- && !apply_implicit_conversion(type_b, value_a, state)) {
- _mesa_glsl_error(loc, state,
- "Could not implicitly convert operands to "
- "arithmetic operator");
- return glsl_type::error_type;
- }
- type_a = value_a->type;
- type_b = value_b->type;
-
- /* "If the operands are integer types, they must both be signed or
- * both be unsigned."
- *
- * From this rule and the preceeding conversion it can be inferred that
- * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT.
- * The is_numeric check above already filtered out the case where either
- * type is not one of these, so now the base types need only be tested for
- * equality.
- */
- if (type_a->base_type != type_b->base_type) {
- _mesa_glsl_error(loc, state,
- "base type mismatch for arithmetic operator");
- return glsl_type::error_type;
- }
-
- /* "All arithmetic binary operators result in the same fundamental type
- * (signed integer, unsigned integer, or floating-point) as the
- * operands they operate on, after operand type conversion. After
- * conversion, the following cases are valid
- *
- * * The two operands are scalars. In this case the operation is
- * applied, resulting in a scalar."
- */
- if (type_a->is_scalar() && type_b->is_scalar())
- return type_a;
-
- /* "* One operand is a scalar, and the other is a vector or matrix.
- * In this case, the scalar operation is applied independently to each
- * component of the vector or matrix, resulting in the same size
- * vector or matrix."
- */
- if (type_a->is_scalar()) {
- if (!type_b->is_scalar())
- return type_b;
- } else if (type_b->is_scalar()) {
- return type_a;
- }
-
- /* All of the combinations of <scalar, scalar>, <vector, scalar>,
- * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been
- * handled.
- */
- assert(!type_a->is_scalar());
- assert(!type_b->is_scalar());
-
- /* "* The two operands are vectors of the same size. In this case, the
- * operation is done component-wise resulting in the same size
- * vector."
- */
- if (type_a->is_vector() && type_b->is_vector()) {
- if (type_a == type_b) {
- return type_a;
- } else {
- _mesa_glsl_error(loc, state,
- "vector size mismatch for arithmetic operator");
- return glsl_type::error_type;
- }
- }
-
- /* All of the combinations of <scalar, scalar>, <vector, scalar>,
- * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and
- * <vector, vector> have been handled. At least one of the operands must
- * be matrix. Further, since there are no integer matrix types, the base
- * type of both operands must be float.
- */
- assert(type_a->is_matrix() || type_b->is_matrix());
- assert(type_a->base_type == GLSL_TYPE_FLOAT);
- assert(type_b->base_type == GLSL_TYPE_FLOAT);
-
- /* "* The operator is add (+), subtract (-), or divide (/), and the
- * operands are matrices with the same number of rows and the same
- * number of columns. In this case, the operation is done component-
- * wise resulting in the same size matrix."
- * * The operator is multiply (*), where both operands are matrices or
- * one operand is a vector and the other a matrix. A right vector
- * operand is treated as a column vector and a left vector operand as a
- * row vector. In all these cases, it is required that the number of
- * columns of the left operand is equal to the number of rows of the
- * right operand. Then, the multiply (*) operation does a linear
- * algebraic multiply, yielding an object that has the same number of
- * rows as the left operand and the same number of columns as the right
- * operand. Section 5.10 "Vector and Matrix Operations" explains in
- * more detail how vectors and matrices are operated on."
- */
- if (! multiply) {
- if (type_a == type_b)
- return type_a;
- } else {
- if (type_a->is_matrix() && type_b->is_matrix()) {
- /* Matrix multiply. The columns of A must match the rows of B. Given
- * the other previously tested constraints, this means the vector type
- * of a row from A must be the same as the vector type of a column from
- * B.
- */
- if (type_a->row_type() == type_b->column_type()) {
- /* The resulting matrix has the number of columns of matrix B and
- * the number of rows of matrix A. We get the row count of A by
- * looking at the size of a vector that makes up a column. The
- * transpose (size of a row) is done for B.
- */
- const glsl_type *const type =
- glsl_type::get_instance(type_a->base_type,
- type_a->column_type()->vector_elements,
- type_b->row_type()->vector_elements);
- assert(type != glsl_type::error_type);
-
- return type;
- }
- } else if (type_a->is_matrix()) {
- /* A is a matrix and B is a column vector. Columns of A must match
- * rows of B. Given the other previously tested constraints, this
- * means the vector type of a row from A must be the same as the
- * vector the type of B.
- */
- if (type_a->row_type() == type_b) {
- /* The resulting vector has a number of elements equal to
- * the number of rows of matrix A. */
- const glsl_type *const type =
- glsl_type::get_instance(type_a->base_type,
- type_a->column_type()->vector_elements,
- 1);
- assert(type != glsl_type::error_type);
-
- return type;
- }
- } else {
- assert(type_b->is_matrix());
-
- /* A is a row vector and B is a matrix. Columns of A must match rows
- * of B. Given the other previously tested constraints, this means
- * the type of A must be the same as the vector type of a column from
- * B.
- */
- if (type_a == type_b->column_type()) {
- /* The resulting vector has a number of elements equal to
- * the number of columns of matrix B. */
- const glsl_type *const type =
- glsl_type::get_instance(type_a->base_type,
- type_b->row_type()->vector_elements,
- 1);
- assert(type != glsl_type::error_type);
-
- return type;
- }
- }
-
- _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication");
- return glsl_type::error_type;
- }
-
-
- /* "All other cases are illegal."
- */
- _mesa_glsl_error(loc, state, "type mismatch");
- return glsl_type::error_type;
-}
-
-
-static const struct glsl_type *
-unary_arithmetic_result_type(const struct glsl_type *type,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- /* From GLSL 1.50 spec, page 57:
- *
- * "The arithmetic unary operators negate (-), post- and pre-increment
- * and decrement (-- and ++) operate on integer or floating-point
- * values (including vectors and matrices). All unary operators work
- * component-wise on their operands. These result with the same type
- * they operated on."
- */
- if (!type->is_numeric()) {
- _mesa_glsl_error(loc, state,
- "Operands to arithmetic operators must be numeric");
- return glsl_type::error_type;
- }
-
- return type;
-}
-
-/**
- * \brief Return the result type of a bit-logic operation.
- *
- * If the given types to the bit-logic operator are invalid, return
- * glsl_type::error_type.
- *
- * \param type_a Type of LHS of bit-logic op
- * \param type_b Type of RHS of bit-logic op
- */
-static const struct glsl_type *
-bit_logic_result_type(const struct glsl_type *type_a,
- const struct glsl_type *type_b,
- ast_operators op,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- if (state->language_version < 130) {
- _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30");
- return glsl_type::error_type;
- }
-
- /* From page 50 (page 56 of PDF) of GLSL 1.30 spec:
- *
- * "The bitwise operators and (&), exclusive-or (^), and inclusive-or
- * (|). The operands must be of type signed or unsigned integers or
- * integer vectors."
- */
- if (!type_a->is_integer()) {
- _mesa_glsl_error(loc, state, "LHS of `%s' must be an integer",
- ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
- if (!type_b->is_integer()) {
- _mesa_glsl_error(loc, state, "RHS of `%s' must be an integer",
- ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* "The fundamental types of the operands (signed or unsigned) must
- * match,"
- */
- if (type_a->base_type != type_b->base_type) {
- _mesa_glsl_error(loc, state, "operands of `%s' must have the same "
- "base type", ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* "The operands cannot be vectors of differing size." */
- if (type_a->is_vector() &&
- type_b->is_vector() &&
- type_a->vector_elements != type_b->vector_elements) {
- _mesa_glsl_error(loc, state, "operands of `%s' cannot be vectors of "
- "different sizes", ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* "If one operand is a scalar and the other a vector, the scalar is
- * applied component-wise to the vector, resulting in the same type as
- * the vector. The fundamental types of the operands [...] will be the
- * resulting fundamental type."
- */
- if (type_a->is_scalar())
- return type_b;
- else
- return type_a;
-}
-
-static const struct glsl_type *
-modulus_result_type(const struct glsl_type *type_a,
- const struct glsl_type *type_b,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- /* From GLSL 1.50 spec, page 56:
- * "The operator modulus (%) operates on signed or unsigned integers or
- * integer vectors. The operand types must both be signed or both be
- * unsigned."
- */
- if (!type_a->is_integer() || !type_b->is_integer()
- || (type_a->base_type != type_b->base_type)) {
- _mesa_glsl_error(loc, state, "type mismatch");
- return glsl_type::error_type;
- }
-
- /* "The operands cannot be vectors of differing size. If one operand is
- * a scalar and the other vector, then the scalar is applied component-
- * wise to the vector, resulting in the same type as the vector. If both
- * are vectors of the same size, the result is computed component-wise."
- */
- if (type_a->is_vector()) {
- if (!type_b->is_vector()
- || (type_a->vector_elements == type_b->vector_elements))
- return type_a;
- } else
- return type_b;
-
- /* "The operator modulus (%) is not defined for any other data types
- * (non-integer types)."
- */
- _mesa_glsl_error(loc, state, "type mismatch");
- return glsl_type::error_type;
-}
-
-
-static const struct glsl_type *
-relational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- const glsl_type *type_a = value_a->type;
- const glsl_type *type_b = value_b->type;
-
- /* From GLSL 1.50 spec, page 56:
- * "The relational operators greater than (>), less than (<), greater
- * than or equal (>=), and less than or equal (<=) operate only on
- * scalar integer and scalar floating-point expressions."
- */
- if (!type_a->is_numeric()
- || !type_b->is_numeric()
- || !type_a->is_scalar()
- || !type_b->is_scalar()) {
- _mesa_glsl_error(loc, state,
- "Operands to relational operators must be scalar and "
- "numeric");
- return glsl_type::error_type;
- }
-
- /* "Either the operands' types must match, or the conversions from
- * Section 4.1.10 "Implicit Conversions" will be applied to the integer
- * operand, after which the types must match."
- */
- if (!apply_implicit_conversion(type_a, value_b, state)
- && !apply_implicit_conversion(type_b, value_a, state)) {
- _mesa_glsl_error(loc, state,
- "Could not implicitly convert operands to "
- "relational operator");
- return glsl_type::error_type;
- }
- type_a = value_a->type;
- type_b = value_b->type;
-
- if (type_a->base_type != type_b->base_type) {
- _mesa_glsl_error(loc, state, "base type mismatch");
- return glsl_type::error_type;
- }
-
- /* "The result is scalar Boolean."
- */
- return glsl_type::bool_type;
-}
-
-/**
- * \brief Return the result type of a bit-shift operation.
- *
- * If the given types to the bit-shift operator are invalid, return
- * glsl_type::error_type.
- *
- * \param type_a Type of LHS of bit-shift op
- * \param type_b Type of RHS of bit-shift op
- */
-static const struct glsl_type *
-shift_result_type(const struct glsl_type *type_a,
- const struct glsl_type *type_b,
- ast_operators op,
- struct _mesa_glsl_parse_state *state, YYLTYPE *loc)
-{
- if (state->language_version < 130) {
- _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30");
- return glsl_type::error_type;
- }
-
- /* From page 50 (page 56 of the PDF) of the GLSL 1.30 spec:
- *
- * "The shift operators (<<) and (>>). For both operators, the operands
- * must be signed or unsigned integers or integer vectors. One operand
- * can be signed while the other is unsigned."
- */
- if (!type_a->is_integer()) {
- _mesa_glsl_error(loc, state, "LHS of operator %s must be an integer or "
- "integer vector", ast_expression::operator_string(op));
- return glsl_type::error_type;
-
- }
- if (!type_b->is_integer()) {
- _mesa_glsl_error(loc, state, "RHS of operator %s must be an integer or "
- "integer vector", ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* "If the first operand is a scalar, the second operand has to be
- * a scalar as well."
- */
- if (type_a->is_scalar() && !type_b->is_scalar()) {
- _mesa_glsl_error(loc, state, "If the first operand of %s is scalar, the "
- "second must be scalar as well",
- ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* If both operands are vectors, check that they have same number of
- * elements.
- */
- if (type_a->is_vector() &&
- type_b->is_vector() &&
- type_a->vector_elements != type_b->vector_elements) {
- _mesa_glsl_error(loc, state, "Vector operands to operator %s must "
- "have same number of elements",
- ast_expression::operator_string(op));
- return glsl_type::error_type;
- }
-
- /* "In all cases, the resulting type will be the same type as the left
- * operand."
- */
- return type_a;
-}
-
-/**
- * Validates that a value can be assigned to a location with a specified type
- *
- * Validates that \c rhs can be assigned to some location. If the types are
- * not an exact match but an automatic conversion is possible, \c rhs will be
- * converted.
- *
- * \return
- * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type.
- * Otherwise the actual RHS to be assigned will be returned. This may be
- * \c rhs, or it may be \c rhs after some type conversion.
- *
- * \note
- * In addition to being used for assignments, this function is used to
- * type-check return values.
- */
-ir_rvalue *
-validate_assignment(struct _mesa_glsl_parse_state *state,
- const glsl_type *lhs_type, ir_rvalue *rhs)
-{
- /* If there is already some error in the RHS, just return it. Anything
- * else will lead to an avalanche of error message back to the user.
- */
- if (rhs->type->is_error())
- return rhs;
-
- /* If the types are identical, the assignment can trivially proceed.
- */
- if (rhs->type == lhs_type)
- return rhs;
-
- /* If the array element types are the same and the size of the LHS is zero,
- * the assignment is okay.
- *
- * Note: Whole-array assignments are not permitted in GLSL 1.10, but this
- * is handled by ir_dereference::is_lvalue.
- */
- if (lhs_type->is_array() && rhs->type->is_array()
- && (lhs_type->element_type() == rhs->type->element_type())
- && (lhs_type->array_size() == 0)) {
- return rhs;
- }
-
- /* Check for implicit conversion in GLSL 1.20 */
- if (apply_implicit_conversion(lhs_type, rhs, state)) {
- if (rhs->type == lhs_type)
- return rhs;
- }
-
- return NULL;
-}
-
-ir_rvalue *
-do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state,
- ir_rvalue *lhs, ir_rvalue *rhs,
- YYLTYPE lhs_loc)
-{
- void *ctx = state;
- bool error_emitted = (lhs->type->is_error() || rhs->type->is_error());
-
- if (!error_emitted) {
- if (!lhs->is_lvalue()) {
- _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment");
- error_emitted = true;
- }
-
- if (state->es_shader && lhs->type->is_array()) {
- _mesa_glsl_error(&lhs_loc, state, "whole array assignment is not "
- "allowed in GLSL ES 1.00.");
- error_emitted = true;
- }
- }
-
- ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs);
- if (new_rhs == NULL) {
- _mesa_glsl_error(& lhs_loc, state, "type mismatch");
- } else {
- rhs = new_rhs;
-
- /* If the LHS array was not declared with a size, it takes it size from
- * the RHS. If the LHS is an l-value and a whole array, it must be a
- * dereference of a variable. Any other case would require that the LHS
- * is either not an l-value or not a whole array.
- */
- if (lhs->type->array_size() == 0) {
- ir_dereference *const d = lhs->as_dereference();
-
- assert(d != NULL);
-
- ir_variable *const var = d->variable_referenced();
-
- assert(var != NULL);
-
- if (var->max_array_access >= unsigned(rhs->type->array_size())) {
- /* FINISHME: This should actually log the location of the RHS. */
- _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to "
- "previous access",
- var->max_array_access);
- }
-
- var->type = glsl_type::get_array_instance(lhs->type->element_type(),
- rhs->type->array_size());
- d->type = var->type;
- }
- }
-
- /* Most callers of do_assignment (assign, add_assign, pre_inc/dec,
- * but not post_inc) need the converted assigned value as an rvalue
- * to handle things like:
- *
- * i = j += 1;
- *
- * So we always just store the computed value being assigned to a
- * temporary and return a deref of that temporary. If the rvalue
- * ends up not being used, the temp will get copy-propagated out.
- */
- ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp",
- ir_var_temporary);
- ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var);
- instructions->push_tail(var);
- instructions->push_tail(new(ctx) ir_assignment(deref_var,
- rhs,
- NULL));
- deref_var = new(ctx) ir_dereference_variable(var);
-
- if (!error_emitted)
- instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL));
-
- return new(ctx) ir_dereference_variable(var);
-}
-
-static ir_rvalue *
-get_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue)
-{
- void *ctx = talloc_parent(lvalue);
- ir_variable *var;
-
- var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp",
- ir_var_temporary);
- instructions->push_tail(var);
- var->mode = ir_var_auto;
-
- instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var),
- lvalue, NULL));
-
- /* Once we've created this temporary, mark it read only so it's no
- * longer considered an lvalue.
- */
- var->read_only = true;
-
- return new(ctx) ir_dereference_variable(var);
-}
-
-
-ir_rvalue *
-ast_node::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- (void) instructions;
- (void) state;
-
- return NULL;
-}
-
-static void
-mark_whole_array_access(ir_rvalue *access)
-{
- ir_dereference_variable *deref = access->as_dereference_variable();
-
- if (deref) {
- deref->var->max_array_access = deref->type->length - 1;
- }
-}
-
-static ir_rvalue *
-do_comparison(void *mem_ctx, int operation, ir_rvalue *op0, ir_rvalue *op1)
-{
- int join_op;
- ir_rvalue *cmp = NULL;
-
- if (operation == ir_binop_all_equal)
- join_op = ir_binop_logic_and;
- else
- join_op = ir_binop_logic_or;
-
- switch (op0->type->base_type) {
- case GLSL_TYPE_FLOAT:
- case GLSL_TYPE_UINT:
- case GLSL_TYPE_INT:
- case GLSL_TYPE_BOOL:
- return new(mem_ctx) ir_expression(operation, op0, op1);
-
- case GLSL_TYPE_ARRAY: {
- for (unsigned int i = 0; i < op0->type->length; i++) {
- ir_rvalue *e0, *e1, *result;
-
- e0 = new(mem_ctx) ir_dereference_array(op0->clone(mem_ctx, NULL),
- new(mem_ctx) ir_constant(i));
- e1 = new(mem_ctx) ir_dereference_array(op1->clone(mem_ctx, NULL),
- new(mem_ctx) ir_constant(i));
- result = do_comparison(mem_ctx, operation, e0, e1);
-
- if (cmp) {
- cmp = new(mem_ctx) ir_expression(join_op, cmp, result);
- } else {
- cmp = result;
- }
- }
-
- mark_whole_array_access(op0);
- mark_whole_array_access(op1);
- break;
- }
-
- case GLSL_TYPE_STRUCT: {
- for (unsigned int i = 0; i < op0->type->length; i++) {
- ir_rvalue *e0, *e1, *result;
- const char *field_name = op0->type->fields.structure[i].name;
-
- e0 = new(mem_ctx) ir_dereference_record(op0->clone(mem_ctx, NULL),
- field_name);
- e1 = new(mem_ctx) ir_dereference_record(op1->clone(mem_ctx, NULL),
- field_name);
- result = do_comparison(mem_ctx, operation, e0, e1);
-
- if (cmp) {
- cmp = new(mem_ctx) ir_expression(join_op, cmp, result);
- } else {
- cmp = result;
- }
- }
- break;
- }
-
- case GLSL_TYPE_ERROR:
- case GLSL_TYPE_VOID:
- case GLSL_TYPE_SAMPLER:
- /* I assume a comparison of a struct containing a sampler just
- * ignores the sampler present in the type.
- */
- break;
-
- default:
- assert(!"Should not get here.");
- break;
- }
-
- if (cmp == NULL)
- cmp = new(mem_ctx) ir_constant(true);
-
- return cmp;
-}
-
-ir_rvalue *
-ast_expression::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- static const int operations[AST_NUM_OPERATORS] = {
- -1, /* ast_assign doesn't convert to ir_expression. */
- -1, /* ast_plus doesn't convert to ir_expression. */
- ir_unop_neg,
- ir_binop_add,
- ir_binop_sub,
- ir_binop_mul,
- ir_binop_div,
- ir_binop_mod,
- ir_binop_lshift,
- ir_binop_rshift,
- ir_binop_less,
- ir_binop_greater,
- ir_binop_lequal,
- ir_binop_gequal,
- ir_binop_all_equal,
- ir_binop_any_nequal,
- ir_binop_bit_and,
- ir_binop_bit_xor,
- ir_binop_bit_or,
- ir_unop_bit_not,
- ir_binop_logic_and,
- ir_binop_logic_xor,
- ir_binop_logic_or,
- ir_unop_logic_not,
-
- /* Note: The following block of expression types actually convert
- * to multiple IR instructions.
- */
- ir_binop_mul, /* ast_mul_assign */
- ir_binop_div, /* ast_div_assign */
- ir_binop_mod, /* ast_mod_assign */
- ir_binop_add, /* ast_add_assign */
- ir_binop_sub, /* ast_sub_assign */
- ir_binop_lshift, /* ast_ls_assign */
- ir_binop_rshift, /* ast_rs_assign */
- ir_binop_bit_and, /* ast_and_assign */
- ir_binop_bit_xor, /* ast_xor_assign */
- ir_binop_bit_or, /* ast_or_assign */
-
- -1, /* ast_conditional doesn't convert to ir_expression. */
- ir_binop_add, /* ast_pre_inc. */
- ir_binop_sub, /* ast_pre_dec. */
- ir_binop_add, /* ast_post_inc. */
- ir_binop_sub, /* ast_post_dec. */
- -1, /* ast_field_selection doesn't conv to ir_expression. */
- -1, /* ast_array_index doesn't convert to ir_expression. */
- -1, /* ast_function_call doesn't conv to ir_expression. */
- -1, /* ast_identifier doesn't convert to ir_expression. */
- -1, /* ast_int_constant doesn't convert to ir_expression. */
- -1, /* ast_uint_constant doesn't conv to ir_expression. */
- -1, /* ast_float_constant doesn't conv to ir_expression. */
- -1, /* ast_bool_constant doesn't conv to ir_expression. */
- -1, /* ast_sequence doesn't convert to ir_expression. */
- };
- ir_rvalue *result = NULL;
- ir_rvalue *op[3];
- const struct glsl_type *type = glsl_type::error_type;
- bool error_emitted = false;
- YYLTYPE loc;
-
- loc = this->get_location();
-
- switch (this->oper) {
- case ast_assign: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- result = do_assignment(instructions, state, op[0], op[1],
- this->subexpressions[0]->get_location());
- error_emitted = result->type->is_error();
- type = result->type;
- break;
- }
-
- case ast_plus:
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- type = unary_arithmetic_result_type(op[0]->type, state, & loc);
-
- error_emitted = type->is_error();
-
- result = op[0];
- break;
-
- case ast_neg:
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- type = unary_arithmetic_result_type(op[0]->type, state, & loc);
-
- error_emitted = type->is_error();
-
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], NULL);
- break;
-
- case ast_add:
- case ast_sub:
- case ast_mul:
- case ast_div:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- type = arithmetic_result_type(op[0], op[1],
- (this->oper == ast_mul),
- state, & loc);
- error_emitted = type->is_error();
-
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
- break;
-
- case ast_mod:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- type = modulus_result_type(op[0]->type, op[1]->type, state, & loc);
-
- assert(operations[this->oper] == ir_binop_mod);
-
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
- error_emitted = type->is_error();
- break;
-
- case ast_lshift:
- case ast_rshift:
- if (state->language_version < 130) {
- _mesa_glsl_error(&loc, state, "operator %s requires GLSL 1.30",
- operator_string(this->oper));
- error_emitted = true;
- }
-
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
- type = shift_result_type(op[0]->type, op[1]->type, this->oper, state,
- &loc);
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
- break;
-
- case ast_less:
- case ast_greater:
- case ast_lequal:
- case ast_gequal:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- type = relational_result_type(op[0], op[1], state, & loc);
-
- /* The relational operators must either generate an error or result
- * in a scalar boolean. See page 57 of the GLSL 1.50 spec.
- */
- assert(type->is_error()
- || ((type->base_type == GLSL_TYPE_BOOL)
- && type->is_scalar()));
-
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
- error_emitted = type->is_error();
- break;
-
- case ast_nequal:
- case ast_equal:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec:
- *
- * "The equality operators equal (==), and not equal (!=)
- * operate on all types. They result in a scalar Boolean. If
- * the operand types do not match, then there must be a
- * conversion from Section 4.1.10 "Implicit Conversions"
- * applied to one operand that can make them match, in which
- * case this conversion is done."
- */
- if ((!apply_implicit_conversion(op[0]->type, op[1], state)
- && !apply_implicit_conversion(op[1]->type, op[0], state))
- || (op[0]->type != op[1]->type)) {
- _mesa_glsl_error(& loc, state, "operands of `%s' must have the same "
- "type", (this->oper == ast_equal) ? "==" : "!=");
- error_emitted = true;
- } else if ((state->language_version <= 110)
- && (op[0]->type->is_array() || op[1]->type->is_array())) {
- _mesa_glsl_error(& loc, state, "array comparisons forbidden in "
- "GLSL 1.10");
- error_emitted = true;
- }
-
- result = do_comparison(ctx, operations[this->oper], op[0], op[1]);
- type = glsl_type::bool_type;
-
- assert(error_emitted || (result->type == glsl_type::bool_type));
- break;
-
- case ast_bit_and:
- case ast_bit_xor:
- case ast_bit_or:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
- type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper,
- state, &loc);
- result = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
- break;
-
- case ast_bit_not:
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- if (state->language_version < 130) {
- _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30");
- error_emitted = true;
- }
-
- if (!op[0]->type->is_integer()) {
- _mesa_glsl_error(&loc, state, "operand of `~' must be an integer");
- error_emitted = true;
- }
-
- type = op[0]->type;
- result = new(ctx) ir_expression(ir_unop_bit_not, type, op[0], NULL);
- break;
-
- case ast_logic_and: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[0]->get_location();
-
- _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
-
- ir_constant *op0_const = op[0]->constant_expression_value();
- if (op0_const) {
- if (op0_const->value.b[0]) {
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[1]->get_location();
-
- _mesa_glsl_error(& loc, state,
- "RHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
- result = op[1];
- } else {
- result = op0_const;
- }
- type = glsl_type::bool_type;
- } else {
- ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type,
- "and_tmp",
- ir_var_temporary);
- instructions->push_tail(tmp);
-
- ir_if *const stmt = new(ctx) ir_if(op[0]);
- instructions->push_tail(stmt);
-
- op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state);
-
- if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[1]->get_location();
-
- _mesa_glsl_error(& loc, state,
- "RHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
-
- ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const then_assign =
- new(ctx) ir_assignment(then_deref, op[1], NULL);
- stmt->then_instructions.push_tail(then_assign);
-
- ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const else_assign =
- new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL);
- stmt->else_instructions.push_tail(else_assign);
-
- result = new(ctx) ir_dereference_variable(tmp);
- type = tmp->type;
- }
- break;
- }
-
- case ast_logic_or: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[0]->get_location();
-
- _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
-
- ir_constant *op0_const = op[0]->constant_expression_value();
- if (op0_const) {
- if (op0_const->value.b[0]) {
- result = op0_const;
- } else {
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[1]->get_location();
-
- _mesa_glsl_error(& loc, state,
- "RHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
- result = op[1];
- }
- type = glsl_type::bool_type;
- } else {
- ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type,
- "or_tmp",
- ir_var_temporary);
- instructions->push_tail(tmp);
-
- ir_if *const stmt = new(ctx) ir_if(op[0]);
- instructions->push_tail(stmt);
-
- op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state);
-
- if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[1]->get_location();
-
- _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean",
- operator_string(this->oper));
- error_emitted = true;
- }
-
- ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const then_assign =
- new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL);
- stmt->then_instructions.push_tail(then_assign);
-
- ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const else_assign =
- new(ctx) ir_assignment(else_deref, op[1], NULL);
- stmt->else_instructions.push_tail(else_assign);
-
- result = new(ctx) ir_dereference_variable(tmp);
- type = tmp->type;
- }
- break;
- }
-
- case ast_logic_xor:
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
-
- result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type,
- op[0], op[1]);
- type = glsl_type::bool_type;
- break;
-
- case ast_logic_not:
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[0]->get_location();
-
- _mesa_glsl_error(& loc, state,
- "operand of `!' must be scalar boolean");
- error_emitted = true;
- }
-
- result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type,
- op[0], NULL);
- type = glsl_type::bool_type;
- break;
-
- case ast_mul_assign:
- case ast_div_assign:
- case ast_add_assign:
- case ast_sub_assign: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- type = arithmetic_result_type(op[0], op[1],
- (this->oper == ast_mul_assign),
- state, & loc);
-
- ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
-
- result = do_assignment(instructions, state,
- op[0]->clone(ctx, NULL), temp_rhs,
- this->subexpressions[0]->get_location());
- type = result->type;
- error_emitted = (op[0]->type->is_error());
-
- /* GLSL 1.10 does not allow array assignment. However, we don't have to
- * explicitly test for this because none of the binary expression
- * operators allow array operands either.
- */
-
- break;
- }
-
- case ast_mod_assign: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
-
- type = modulus_result_type(op[0]->type, op[1]->type, state, & loc);
-
- assert(operations[this->oper] == ir_binop_mod);
-
- ir_rvalue *temp_rhs;
- temp_rhs = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
-
- result = do_assignment(instructions, state,
- op[0]->clone(ctx, NULL), temp_rhs,
- this->subexpressions[0]->get_location());
- type = result->type;
- error_emitted = type->is_error();
- break;
- }
-
- case ast_ls_assign:
- case ast_rs_assign: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
- type = shift_result_type(op[0]->type, op[1]->type, this->oper, state,
- &loc);
- ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper],
- type, op[0], op[1]);
- result = do_assignment(instructions, state, op[0]->clone(ctx, NULL),
- temp_rhs,
- this->subexpressions[0]->get_location());
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
- break;
- }
-
- case ast_and_assign:
- case ast_xor_assign:
- case ast_or_assign: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- op[1] = this->subexpressions[1]->hir(instructions, state);
- type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper,
- state, &loc);
- ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper],
- type, op[0], op[1]);
- result = do_assignment(instructions, state, op[0]->clone(ctx, NULL),
- temp_rhs,
- this->subexpressions[0]->get_location());
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
- break;
- }
-
- case ast_conditional: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
-
- /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec:
- *
- * "The ternary selection operator (?:). It operates on three
- * expressions (exp1 ? exp2 : exp3). This operator evaluates the
- * first expression, which must result in a scalar Boolean."
- */
- if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) {
- YYLTYPE loc = this->subexpressions[0]->get_location();
-
- _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean");
- error_emitted = true;
- }
-
- /* The :? operator is implemented by generating an anonymous temporary
- * followed by an if-statement. The last instruction in each branch of
- * the if-statement assigns a value to the anonymous temporary. This
- * temporary is the r-value of the expression.
- */
- exec_list then_instructions;
- exec_list else_instructions;
-
- op[1] = this->subexpressions[1]->hir(&then_instructions, state);
- op[2] = this->subexpressions[2]->hir(&else_instructions, state);
-
- /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec:
- *
- * "The second and third expressions can be any type, as
- * long their types match, or there is a conversion in
- * Section 4.1.10 "Implicit Conversions" that can be applied
- * to one of the expressions to make their types match. This
- * resulting matching type is the type of the entire
- * expression."
- */
- if ((!apply_implicit_conversion(op[1]->type, op[2], state)
- && !apply_implicit_conversion(op[2]->type, op[1], state))
- || (op[1]->type != op[2]->type)) {
- YYLTYPE loc = this->subexpressions[1]->get_location();
-
- _mesa_glsl_error(& loc, state, "Second and third operands of ?: "
- "operator must have matching types.");
- error_emitted = true;
- type = glsl_type::error_type;
- } else {
- type = op[1]->type;
- }
-
- /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec:
- *
- * "The second and third expressions must be the same type, but can
- * be of any type other than an array."
- */
- if ((state->language_version <= 110) && type->is_array()) {
- _mesa_glsl_error(& loc, state, "Second and third operands of ?: "
- "operator must not be arrays.");
- error_emitted = true;
- }
-
- ir_constant *cond_val = op[0]->constant_expression_value();
- ir_constant *then_val = op[1]->constant_expression_value();
- ir_constant *else_val = op[2]->constant_expression_value();
-
- if (then_instructions.is_empty()
- && else_instructions.is_empty()
- && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) {
- result = (cond_val->value.b[0]) ? then_val : else_val;
- } else {
- ir_variable *const tmp =
- new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary);
- instructions->push_tail(tmp);
-
- ir_if *const stmt = new(ctx) ir_if(op[0]);
- instructions->push_tail(stmt);
-
- then_instructions.move_nodes_to(& stmt->then_instructions);
- ir_dereference *const then_deref =
- new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const then_assign =
- new(ctx) ir_assignment(then_deref, op[1], NULL);
- stmt->then_instructions.push_tail(then_assign);
-
- else_instructions.move_nodes_to(& stmt->else_instructions);
- ir_dereference *const else_deref =
- new(ctx) ir_dereference_variable(tmp);
- ir_assignment *const else_assign =
- new(ctx) ir_assignment(else_deref, op[2], NULL);
- stmt->else_instructions.push_tail(else_assign);
-
- result = new(ctx) ir_dereference_variable(tmp);
- }
- break;
- }
-
- case ast_pre_inc:
- case ast_pre_dec: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- if (op[0]->type->base_type == GLSL_TYPE_FLOAT)
- op[1] = new(ctx) ir_constant(1.0f);
- else
- op[1] = new(ctx) ir_constant(1);
-
- type = arithmetic_result_type(op[0], op[1], false, state, & loc);
-
- ir_rvalue *temp_rhs;
- temp_rhs = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
-
- result = do_assignment(instructions, state,
- op[0]->clone(ctx, NULL), temp_rhs,
- this->subexpressions[0]->get_location());
- type = result->type;
- error_emitted = op[0]->type->is_error();
- break;
- }
-
- case ast_post_inc:
- case ast_post_dec: {
- op[0] = this->subexpressions[0]->hir(instructions, state);
- if (op[0]->type->base_type == GLSL_TYPE_FLOAT)
- op[1] = new(ctx) ir_constant(1.0f);
- else
- op[1] = new(ctx) ir_constant(1);
-
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
-
- type = arithmetic_result_type(op[0], op[1], false, state, & loc);
-
- ir_rvalue *temp_rhs;
- temp_rhs = new(ctx) ir_expression(operations[this->oper], type,
- op[0], op[1]);
-
- /* Get a temporary of a copy of the lvalue before it's modified.
- * This may get thrown away later.
- */
- result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL));
-
- (void)do_assignment(instructions, state,
- op[0]->clone(ctx, NULL), temp_rhs,
- this->subexpressions[0]->get_location());
-
- type = result->type;
- error_emitted = op[0]->type->is_error();
- break;
- }
-
- case ast_field_selection:
- result = _mesa_ast_field_selection_to_hir(this, instructions, state);
- type = result->type;
- break;
-
- case ast_array_index: {
- YYLTYPE index_loc = subexpressions[1]->get_location();
-
- op[0] = subexpressions[0]->hir(instructions, state);
- op[1] = subexpressions[1]->hir(instructions, state);
-
- error_emitted = op[0]->type->is_error() || op[1]->type->is_error();
-
- ir_rvalue *const array = op[0];
-
- result = new(ctx) ir_dereference_array(op[0], op[1]);
-
- /* Do not use op[0] after this point. Use array.
- */
- op[0] = NULL;
-
-
- if (error_emitted)
- break;
-
- if (!array->type->is_array()
- && !array->type->is_matrix()
- && !array->type->is_vector()) {
- _mesa_glsl_error(& index_loc, state,
- "cannot dereference non-array / non-matrix / "
- "non-vector");
- error_emitted = true;
- }
-
- if (!op[1]->type->is_integer()) {
- _mesa_glsl_error(& index_loc, state,
- "array index must be integer type");
- error_emitted = true;
- } else if (!op[1]->type->is_scalar()) {
- _mesa_glsl_error(& index_loc, state,
- "array index must be scalar");
- error_emitted = true;
- }
-
- /* If the array index is a constant expression and the array has a
- * declared size, ensure that the access is in-bounds. If the array
- * index is not a constant expression, ensure that the array has a
- * declared size.
- */
- ir_constant *const const_index = op[1]->constant_expression_value();
- if (const_index != NULL) {
- const int idx = const_index->value.i[0];
- const char *type_name;
- unsigned bound = 0;
-
- if (array->type->is_matrix()) {
- type_name = "matrix";
- } else if (array->type->is_vector()) {
- type_name = "vector";
- } else {
- type_name = "array";
- }
-
- /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec:
- *
- * "It is illegal to declare an array with a size, and then
- * later (in the same shader) index the same array with an
- * integral constant expression greater than or equal to the
- * declared size. It is also illegal to index an array with a
- * negative constant expression."
- */
- if (array->type->is_matrix()) {
- if (array->type->row_type()->vector_elements <= idx) {
- bound = array->type->row_type()->vector_elements;
- }
- } else if (array->type->is_vector()) {
- if (array->type->vector_elements <= idx) {
- bound = array->type->vector_elements;
- }
- } else {
- if ((array->type->array_size() > 0)
- && (array->type->array_size() <= idx)) {
- bound = array->type->array_size();
- }
- }
-
- if (bound > 0) {
- _mesa_glsl_error(& loc, state, "%s index must be < %u",
- type_name, bound);
- error_emitted = true;
- } else if (idx < 0) {
- _mesa_glsl_error(& loc, state, "%s index must be >= 0",
- type_name);
- error_emitted = true;
- }
-
- if (array->type->is_array()) {
- /* If the array is a variable dereference, it dereferences the
- * whole array, by definition. Use this to get the variable.
- *
- * FINISHME: Should some methods for getting / setting / testing
- * FINISHME: array access limits be added to ir_dereference?
- */
- ir_variable *const v = array->whole_variable_referenced();
- if ((v != NULL) && (unsigned(idx) > v->max_array_access))
- v->max_array_access = idx;
- }
- } else if (array->type->array_size() == 0) {
- _mesa_glsl_error(&loc, state, "unsized array index must be constant");
- } else {
- if (array->type->is_array()) {
- /* whole_variable_referenced can return NULL if the array is a
- * member of a structure. In this case it is safe to not update
- * the max_array_access field because it is never used for fields
- * of structures.
- */
- ir_variable *v = array->whole_variable_referenced();
- if (v != NULL)
- v->max_array_access = array->type->array_size();
- }
- }
-
- /* From page 23 (29 of the PDF) of the GLSL 1.30 spec:
- *
- * "Samplers aggregated into arrays within a shader (using square
- * brackets [ ]) can only be indexed with integral constant
- * expressions [...]."
- *
- * This restriction was added in GLSL 1.30. Shaders using earlier version
- * of the language should not be rejected by the compiler front-end for
- * using this construct. This allows useful things such as using a loop
- * counter as the index to an array of samplers. If the loop in unrolled,
- * the code should compile correctly. Instead, emit a warning.
- */
- if (array->type->is_array() &&
- array->type->element_type()->is_sampler() &&
- const_index == NULL) {
-
- if (state->language_version == 100) {
- _mesa_glsl_warning(&loc, state,
- "sampler arrays indexed with non-constant "
- "expressions is optional in GLSL ES 1.00");
- } else if (state->language_version < 130) {
- _mesa_glsl_warning(&loc, state,
- "sampler arrays indexed with non-constant "
- "expressions is forbidden in GLSL 1.30 and "
- "later");
- } else {
- _mesa_glsl_error(&loc, state,
- "sampler arrays indexed with non-constant "
- "expressions is forbidden in GLSL 1.30 and "
- "later");
- error_emitted = true;
- }
- }
-
- if (error_emitted)
- result->type = glsl_type::error_type;
-
- type = result->type;
- break;
- }
-
- case ast_function_call:
- /* Should *NEVER* get here. ast_function_call should always be handled
- * by ast_function_expression::hir.
- */
- assert(0);
- break;
-
- case ast_identifier: {
- /* ast_identifier can appear several places in a full abstract syntax
- * tree. This particular use must be at location specified in the grammar
- * as 'variable_identifier'.
- */
- ir_variable *var =
- state->symbols->get_variable(this->primary_expression.identifier);
-
- result = new(ctx) ir_dereference_variable(var);
-
- if (var != NULL) {
- var->used = true;
- type = result->type;
- } else {
- _mesa_glsl_error(& loc, state, "`%s' undeclared",
- this->primary_expression.identifier);
-
- error_emitted = true;
- }
- break;
- }
-
- case ast_int_constant:
- type = glsl_type::int_type;
- result = new(ctx) ir_constant(this->primary_expression.int_constant);
- break;
-
- case ast_uint_constant:
- type = glsl_type::uint_type;
- result = new(ctx) ir_constant(this->primary_expression.uint_constant);
- break;
-
- case ast_float_constant:
- type = glsl_type::float_type;
- result = new(ctx) ir_constant(this->primary_expression.float_constant);
- break;
-
- case ast_bool_constant:
- type = glsl_type::bool_type;
- result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant));
- break;
-
- case ast_sequence: {
- /* It should not be possible to generate a sequence in the AST without
- * any expressions in it.
- */
- assert(!this->expressions.is_empty());
-
- /* The r-value of a sequence is the last expression in the sequence. If
- * the other expressions in the sequence do not have side-effects (and
- * therefore add instructions to the instruction list), they get dropped
- * on the floor.
- */
- foreach_list_typed (ast_node, ast, link, &this->expressions)
- result = ast->hir(instructions, state);
-
- type = result->type;
-
- /* Any errors should have already been emitted in the loop above.
- */
- error_emitted = true;
- break;
- }
- }
-
- if (type->is_error() && !error_emitted)
- _mesa_glsl_error(& loc, state, "type mismatch");
-
- return result;
-}
-
-
-ir_rvalue *
-ast_expression_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- /* It is possible to have expression statements that don't have an
- * expression. This is the solitary semicolon:
- *
- * for (i = 0; i < 5; i++)
- * ;
- *
- * In this case the expression will be NULL. Test for NULL and don't do
- * anything in that case.
- */
- if (expression != NULL)
- expression->hir(instructions, state);
-
- /* Statements do not have r-values.
- */
- return NULL;
-}
-
-
-ir_rvalue *
-ast_compound_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- if (new_scope)
- state->symbols->push_scope();
-
- foreach_list_typed (ast_node, ast, link, &this->statements)
- ast->hir(instructions, state);
-
- if (new_scope)
- state->symbols->pop_scope();
-
- /* Compound statements do not have r-values.
- */
- return NULL;
-}
-
-
-static const glsl_type *
-process_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size,
- struct _mesa_glsl_parse_state *state)
-{
- unsigned length = 0;
-
- /* FINISHME: Reject delcarations of multidimensional arrays. */
-
- if (array_size != NULL) {
- exec_list dummy_instructions;
- ir_rvalue *const ir = array_size->hir(& dummy_instructions, state);
- YYLTYPE loc = array_size->get_location();
-
- /* FINISHME: Verify that the grammar forbids side-effects in array
- * FINISHME: sizes. i.e., 'vec4 [x = 12] data'
- */
- assert(dummy_instructions.is_empty());
-
- if (ir != NULL) {
- if (!ir->type->is_integer()) {
- _mesa_glsl_error(& loc, state, "array size must be integer type");
- } else if (!ir->type->is_scalar()) {
- _mesa_glsl_error(& loc, state, "array size must be scalar type");
- } else {
- ir_constant *const size = ir->constant_expression_value();
-
- if (size == NULL) {
- _mesa_glsl_error(& loc, state, "array size must be a "
- "constant valued expression");
- } else if (size->value.i[0] <= 0) {
- _mesa_glsl_error(& loc, state, "array size must be > 0");
- } else {
- assert(size->type == ir->type);
- length = size->value.u[0];
- }
- }
- }
- } else if (state->es_shader) {
- /* Section 10.17 of the GLSL ES 1.00 specification states that unsized
- * array declarations have been removed from the language.
- */
- _mesa_glsl_error(loc, state, "unsized array declarations are not "
- "allowed in GLSL ES 1.00.");
- }
-
- return glsl_type::get_array_instance(base, length);
-}
-
-
-const glsl_type *
-ast_type_specifier::glsl_type(const char **name,
- struct _mesa_glsl_parse_state *state) const
-{
- const struct glsl_type *type;
-
- type = state->symbols->get_type(this->type_name);
- *name = this->type_name;
-
- if (this->is_array) {
- YYLTYPE loc = this->get_location();
- type = process_array_type(&loc, type, this->array_size, state);
- }
-
- return type;
-}
-
-
-static void
-apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual,
- ir_variable *var,
- struct _mesa_glsl_parse_state *state,
- YYLTYPE *loc)
-{
- if (qual->flags.q.invariant) {
- if (var->used) {
- _mesa_glsl_error(loc, state,
- "variable `%s' may not be redeclared "
- "`invariant' after being used",
- var->name);
- } else {
- var->invariant = 1;
- }
- }
-
- /* FINISHME: Mark 'in' variables at global scope as read-only. */
- if (qual->flags.q.constant || qual->flags.q.attribute
- || qual->flags.q.uniform
- || (qual->flags.q.varying && (state->target == fragment_shader)))
- var->read_only = 1;
-
- if (qual->flags.q.centroid)
- var->centroid = 1;
-
- if (qual->flags.q.attribute && state->target != vertex_shader) {
- var->type = glsl_type::error_type;
- _mesa_glsl_error(loc, state,
- "`attribute' variables may not be declared in the "
- "%s shader",
- _mesa_glsl_shader_target_name(state->target));
- }
-
- /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec:
- *
- * "The varying qualifier can be used only with the data types
- * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of
- * these."
- */
- if (qual->flags.q.varying) {
- const glsl_type *non_array_type;
-
- if (var->type && var->type->is_array())
- non_array_type = var->type->fields.array;
- else
- non_array_type = var->type;
-
- if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) {
- var->type = glsl_type::error_type;
- _mesa_glsl_error(loc, state,
- "varying variables must be of base type float");
- }
- }
-
- /* If there is no qualifier that changes the mode of the variable, leave
- * the setting alone.
- */
- if (qual->flags.q.in && qual->flags.q.out)
- var->mode = ir_var_inout;
- else if (qual->flags.q.attribute || qual->flags.q.in
- || (qual->flags.q.varying && (state->target == fragment_shader)))
- var->mode = ir_var_in;
- else if (qual->flags.q.out
- || (qual->flags.q.varying && (state->target == vertex_shader)))
- var->mode = ir_var_out;
- else if (qual->flags.q.uniform)
- var->mode = ir_var_uniform;
-
- if (state->all_invariant && (state->current_function == NULL)) {
- switch (state->target) {
- case vertex_shader:
- if (var->mode == ir_var_out)
- var->invariant = true;
- break;
- case geometry_shader:
- if ((var->mode == ir_var_in) || (var->mode == ir_var_out))
- var->invariant = true;
- break;
- case fragment_shader:
- if (var->mode == ir_var_in)
- var->invariant = true;
- break;
- }
- }
-
- if (qual->flags.q.flat)
- var->interpolation = ir_var_flat;
- else if (qual->flags.q.noperspective)
- var->interpolation = ir_var_noperspective;
- else
- var->interpolation = ir_var_smooth;
-
- var->pixel_center_integer = qual->flags.q.pixel_center_integer;
- var->origin_upper_left = qual->flags.q.origin_upper_left;
- if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer)
- && (strcmp(var->name, "gl_FragCoord") != 0)) {
- const char *const qual_string = (qual->flags.q.origin_upper_left)
- ? "origin_upper_left" : "pixel_center_integer";
-
- _mesa_glsl_error(loc, state,
- "layout qualifier `%s' can only be applied to "
- "fragment shader input `gl_FragCoord'",
- qual_string);
- }
-
- if (qual->flags.q.explicit_location) {
- const bool global_scope = (state->current_function == NULL);
- bool fail = false;
- const char *string = "";
-
- /* In the vertex shader only shader inputs can be given explicit
- * locations.
- *
- * In the fragment shader only shader outputs can be given explicit
- * locations.
- */
- switch (state->target) {
- case vertex_shader:
- if (!global_scope || (var->mode != ir_var_in)) {
- fail = true;
- string = "input";
- }
- break;
-
- case geometry_shader:
- _mesa_glsl_error(loc, state,
- "geometry shader variables cannot be given "
- "explicit locations\n");
- break;
-
- case fragment_shader:
- if (!global_scope || (var->mode != ir_var_in)) {
- fail = true;
- string = "output";
- }
- break;
- };
-
- if (fail) {
- _mesa_glsl_error(loc, state,
- "only %s shader %s variables can be given an "
- "explicit location\n",
- _mesa_glsl_shader_target_name(state->target),
- string);
- } else {
- var->explicit_location = true;
-
- /* This bit of silliness is needed because invalid explicit locations
- * are supposed to be flagged during linking. Small negative values
- * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias
- * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS).
- * The linker needs to be able to differentiate these cases. This
- * ensures that negative values stay negative.
- */
- if (qual->location >= 0) {
- var->location = (state->target == vertex_shader)
- ? (qual->location + VERT_ATTRIB_GENERIC0)
- : (qual->location + FRAG_RESULT_DATA0);
- } else {
- var->location = qual->location;
- }
- }
- }
-
- if (var->type->is_array() && state->language_version != 110) {
- var->array_lvalue = true;
- }
-}
-
-
-ir_rvalue *
-ast_declarator_list::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- const struct glsl_type *decl_type;
- const char *type_name = NULL;
- ir_rvalue *result = NULL;
- YYLTYPE loc = this->get_location();
-
- /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec:
- *
- * "To ensure that a particular output variable is invariant, it is
- * necessary to use the invariant qualifier. It can either be used to
- * qualify a previously declared variable as being invariant
- *
- * invariant gl_Position; // make existing gl_Position be invariant"
- *
- * In these cases the parser will set the 'invariant' flag in the declarator
- * list, and the type will be NULL.
- */
- if (this->invariant) {
- assert(this->type == NULL);
-
- if (state->current_function != NULL) {
- _mesa_glsl_error(& loc, state,
- "All uses of `invariant' keyword must be at global "
- "scope\n");
- }
-
- foreach_list_typed (ast_declaration, decl, link, &this->declarations) {
- assert(!decl->is_array);
- assert(decl->array_size == NULL);
- assert(decl->initializer == NULL);
-
- ir_variable *const earlier =
- state->symbols->get_variable(decl->identifier);
- if (earlier == NULL) {
- _mesa_glsl_error(& loc, state,
- "Undeclared variable `%s' cannot be marked "
- "invariant\n", decl->identifier);
- } else if ((state->target == vertex_shader)
- && (earlier->mode != ir_var_out)) {
- _mesa_glsl_error(& loc, state,
- "`%s' cannot be marked invariant, vertex shader "
- "outputs only\n", decl->identifier);
- } else if ((state->target == fragment_shader)
- && (earlier->mode != ir_var_in)) {
- _mesa_glsl_error(& loc, state,
- "`%s' cannot be marked invariant, fragment shader "
- "inputs only\n", decl->identifier);
- } else if (earlier->used) {
- _mesa_glsl_error(& loc, state,
- "variable `%s' may not be redeclared "
- "`invariant' after being used",
- earlier->name);
- } else {
- earlier->invariant = true;
- }
- }
-
- /* Invariant redeclarations do not have r-values.
- */
- return NULL;
- }
-
- assert(this->type != NULL);
- assert(!this->invariant);
-
- /* The type specifier may contain a structure definition. Process that
- * before any of the variable declarations.
- */
- (void) this->type->specifier->hir(instructions, state);
-
- decl_type = this->type->specifier->glsl_type(& type_name, state);
- if (this->declarations.is_empty()) {
- /* The only valid case where the declaration list can be empty is when
- * the declaration is setting the default precision of a built-in type
- * (e.g., 'precision highp vec4;').
- */
-
- if (decl_type != NULL) {
- } else {
- _mesa_glsl_error(& loc, state, "incomplete declaration");
- }
- }
-
- foreach_list_typed (ast_declaration, decl, link, &this->declarations) {
- const struct glsl_type *var_type;
- ir_variable *var;
-
- /* FINISHME: Emit a warning if a variable declaration shadows a
- * FINISHME: declaration at a higher scope.
- */
-
- if ((decl_type == NULL) || decl_type->is_void()) {
- if (type_name != NULL) {
- _mesa_glsl_error(& loc, state,
- "invalid type `%s' in declaration of `%s'",
- type_name, decl->identifier);
- } else {
- _mesa_glsl_error(& loc, state,
- "invalid type in declaration of `%s'",
- decl->identifier);
- }
- continue;
- }
-
- if (decl->is_array) {
- var_type = process_array_type(&loc, decl_type, decl->array_size,
- state);
- } else {
- var_type = decl_type;
- }
-
- var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto);
-
- /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification;
- *
- * "Global variables can only use the qualifiers const,
- * attribute, uni form, or varying. Only one may be
- * specified.
- *
- * Local variables can only use the qualifier const."
- *
- * This is relaxed in GLSL 1.30.
- */
- if (state->language_version < 130) {
- if (this->type->qualifier.flags.q.out) {
- _mesa_glsl_error(& loc, state,
- "`out' qualifier in declaration of `%s' "
- "only valid for function parameters in %s.",
- decl->identifier, state->version_string);
- }
- if (this->type->qualifier.flags.q.in) {
- _mesa_glsl_error(& loc, state,
- "`in' qualifier in declaration of `%s' "
- "only valid for function parameters in %s.",
- decl->identifier, state->version_string);
- }
- /* FINISHME: Test for other invalid qualifiers. */
- }
-
- apply_type_qualifier_to_variable(& this->type->qualifier, var, state,
- & loc);
-
- if (this->type->qualifier.flags.q.invariant) {
- if ((state->target == vertex_shader) && !(var->mode == ir_var_out ||
- var->mode == ir_var_inout)) {
- /* FINISHME: Note that this doesn't work for invariant on
- * a function signature outval
- */
- _mesa_glsl_error(& loc, state,
- "`%s' cannot be marked invariant, vertex shader "
- "outputs only\n", var->name);
- } else if ((state->target == fragment_shader) &&
- !(var->mode == ir_var_in || var->mode == ir_var_inout)) {
- /* FINISHME: Note that this doesn't work for invariant on
- * a function signature inval
- */
- _mesa_glsl_error(& loc, state,
- "`%s' cannot be marked invariant, fragment shader "
- "inputs only\n", var->name);
- }
- }
-
- if (state->current_function != NULL) {
- const char *mode = NULL;
- const char *extra = "";
-
- /* There is no need to check for 'inout' here because the parser will
- * only allow that in function parameter lists.
- */
- if (this->type->qualifier.flags.q.attribute) {
- mode = "attribute";
- } else if (this->type->qualifier.flags.q.uniform) {
- mode = "uniform";
- } else if (this->type->qualifier.flags.q.varying) {
- mode = "varying";
- } else if (this->type->qualifier.flags.q.in) {
- mode = "in";
- extra = " or in function parameter list";
- } else if (this->type->qualifier.flags.q.out) {
- mode = "out";
- extra = " or in function parameter list";
- }
-
- if (mode) {
- _mesa_glsl_error(& loc, state,
- "%s variable `%s' must be declared at "
- "global scope%s",
- mode, var->name, extra);
- }
- } else if (var->mode == ir_var_in) {
- if (state->target == vertex_shader) {
- bool error_emitted = false;
-
- /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec:
- *
- * "Vertex shader inputs can only be float, floating-point
- * vectors, matrices, signed and unsigned integers and integer
- * vectors. Vertex shader inputs can also form arrays of these
- * types, but not structures."
- *
- * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec:
- *
- * "Vertex shader inputs can only be float, floating-point
- * vectors, matrices, signed and unsigned integers and integer
- * vectors. They cannot be arrays or structures."
- *
- * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec:
- *
- * "The attribute qualifier can be used only with float,
- * floating-point vectors, and matrices. Attribute variables
- * cannot be declared as arrays or structures."
- */
- const glsl_type *check_type = var->type->is_array()
- ? var->type->fields.array : var->type;
-
- switch (check_type->base_type) {
- case GLSL_TYPE_FLOAT:
- break;
- case GLSL_TYPE_UINT:
- case GLSL_TYPE_INT:
- if (state->language_version > 120)
- break;
- /* FALLTHROUGH */
- default:
- _mesa_glsl_error(& loc, state,
- "vertex shader input / attribute cannot have "
- "type %s`%s'",
- var->type->is_array() ? "array of " : "",
- check_type->name);
- error_emitted = true;
- }
-
- if (!error_emitted && (state->language_version <= 130)
- && var->type->is_array()) {
- _mesa_glsl_error(& loc, state,
- "vertex shader input / attribute cannot have "
- "array type");
- error_emitted = true;
- }
- }
- }
-
- /* Integer vertex outputs must be qualified with 'flat'.
- *
- * From section 4.3.6 of the GLSL 1.30 spec:
- * "If a vertex output is a signed or unsigned integer or integer
- * vector, then it must be qualified with the interpolation qualifier
- * flat."
- */
- if (state->language_version >= 130
- && state->target == vertex_shader
- && state->current_function == NULL
- && var->type->is_integer()
- && var->mode == ir_var_out
- && var->interpolation != ir_var_flat) {
-
- _mesa_glsl_error(&loc, state, "If a vertex output is an integer, "
- "then it must be qualified with 'flat'");
- }
-
-
- /* Process the initializer and add its instructions to a temporary
- * list. This list will be added to the instruction stream (below) after
- * the declaration is added. This is done because in some cases (such as
- * redeclarations) the declaration may not actually be added to the
- * instruction stream.
- */
- exec_list initializer_instructions;
- if (decl->initializer != NULL) {
- YYLTYPE initializer_loc = decl->initializer->get_location();
-
- /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec:
- *
- * "All uniform variables are read-only and are initialized either
- * directly by an application via API commands, or indirectly by
- * OpenGL."
- */
- if ((state->language_version <= 110)
- && (var->mode == ir_var_uniform)) {
- _mesa_glsl_error(& initializer_loc, state,
- "cannot initialize uniforms in GLSL 1.10");
- }
-
- if (var->type->is_sampler()) {
- _mesa_glsl_error(& initializer_loc, state,
- "cannot initialize samplers");
- }
-
- if ((var->mode == ir_var_in) && (state->current_function == NULL)) {
- _mesa_glsl_error(& initializer_loc, state,
- "cannot initialize %s shader input / %s",
- _mesa_glsl_shader_target_name(state->target),
- (state->target == vertex_shader)
- ? "attribute" : "varying");
- }
-
- ir_dereference *const lhs = new(ctx) ir_dereference_variable(var);
- ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions,
- state);
-
- /* Calculate the constant value if this is a const or uniform
- * declaration.
- */
- if (this->type->qualifier.flags.q.constant
- || this->type->qualifier.flags.q.uniform) {
- ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs);
- if (new_rhs != NULL) {
- rhs = new_rhs;
-
- ir_constant *constant_value = rhs->constant_expression_value();
- if (!constant_value) {
- _mesa_glsl_error(& initializer_loc, state,
- "initializer of %s variable `%s' must be a "
- "constant expression",
- (this->type->qualifier.flags.q.constant)
- ? "const" : "uniform",
- decl->identifier);
- if (var->type->is_numeric()) {
- /* Reduce cascading errors. */
- var->constant_value = ir_constant::zero(ctx, var->type);
- }
- } else {
- rhs = constant_value;
- var->constant_value = constant_value;
- }
- } else {
- _mesa_glsl_error(&initializer_loc, state,
- "initializer of type %s cannot be assigned to "
- "variable of type %s",
- rhs->type->name, var->type->name);
- if (var->type->is_numeric()) {
- /* Reduce cascading errors. */
- var->constant_value = ir_constant::zero(ctx, var->type);
- }
- }
- }
-
- if (rhs && !rhs->type->is_error()) {
- bool temp = var->read_only;
- if (this->type->qualifier.flags.q.constant)
- var->read_only = false;
-
- /* Never emit code to initialize a uniform.
- */
- const glsl_type *initializer_type;
- if (!this->type->qualifier.flags.q.uniform) {
- result = do_assignment(&initializer_instructions, state,
- lhs, rhs,
- this->get_location());
- initializer_type = result->type;
- } else
- initializer_type = rhs->type;
-
- /* If the declared variable is an unsized array, it must inherrit
- * its full type from the initializer. A declaration such as
- *
- * uniform float a[] = float[](1.0, 2.0, 3.0, 3.0);
- *
- * becomes
- *
- * uniform float a[4] = float[](1.0, 2.0, 3.0, 3.0);
- *
- * The assignment generated in the if-statement (below) will also
- * automatically handle this case for non-uniforms.
- *
- * If the declared variable is not an array, the types must
- * already match exactly. As a result, the type assignment
- * here can be done unconditionally. For non-uniforms the call
- * to do_assignment can change the type of the initializer (via
- * the implicit conversion rules). For uniforms the initializer
- * must be a constant expression, and the type of that expression
- * was validated above.
- */
- var->type = initializer_type;
-
- var->read_only = temp;
- }
- }
-
- /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec:
- *
- * "It is an error to write to a const variable outside of
- * its declaration, so they must be initialized when
- * declared."
- */
- if (this->type->qualifier.flags.q.constant && decl->initializer == NULL) {
- _mesa_glsl_error(& loc, state,
- "const declaration of `%s' must be initialized");
- }
-
- /* Check if this declaration is actually a re-declaration, either to
- * resize an array or add qualifiers to an existing variable.
- *
- * This is allowed for variables in the current scope, or when at
- * global scope (for built-ins in the implicit outer scope).
- */
- ir_variable *earlier = state->symbols->get_variable(decl->identifier);
- if (earlier != NULL && (state->current_function == NULL ||
- state->symbols->name_declared_this_scope(decl->identifier))) {
-
- /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec,
- *
- * "It is legal to declare an array without a size and then
- * later re-declare the same name as an array of the same
- * type and specify a size."
- */
- if ((earlier->type->array_size() == 0)
- && var->type->is_array()
- && (var->type->element_type() == earlier->type->element_type())) {
- /* FINISHME: This doesn't match the qualifiers on the two
- * FINISHME: declarations. It's not 100% clear whether this is
- * FINISHME: required or not.
- */
-
- /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec:
- *
- * "The size [of gl_TexCoord] can be at most
- * gl_MaxTextureCoords."
- */
- const unsigned size = unsigned(var->type->array_size());
- if ((strcmp("gl_TexCoord", var->name) == 0)
- && (size > state->Const.MaxTextureCoords)) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot "
- "be larger than gl_MaxTextureCoords (%u)\n",
- state->Const.MaxTextureCoords);
- } else if ((size > 0) && (size <= earlier->max_array_access)) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "array size must be > %u due to "
- "previous access",
- earlier->max_array_access);
- }
-
- earlier->type = var->type;
- delete var;
- var = NULL;
- } else if (state->ARB_fragment_coord_conventions_enable
- && strcmp(var->name, "gl_FragCoord") == 0
- && earlier->type == var->type
- && earlier->mode == var->mode) {
- /* Allow redeclaration of gl_FragCoord for ARB_fcc layout
- * qualifiers.
- */
- earlier->origin_upper_left = var->origin_upper_left;
- earlier->pixel_center_integer = var->pixel_center_integer;
-
- /* According to section 4.3.7 of the GLSL 1.30 spec,
- * the following built-in varaibles can be redeclared with an
- * interpolation qualifier:
- * * gl_FrontColor
- * * gl_BackColor
- * * gl_FrontSecondaryColor
- * * gl_BackSecondaryColor
- * * gl_Color
- * * gl_SecondaryColor
- */
- } else if (state->language_version >= 130
- && (strcmp(var->name, "gl_FrontColor") == 0
- || strcmp(var->name, "gl_BackColor") == 0
- || strcmp(var->name, "gl_FrontSecondaryColor") == 0
- || strcmp(var->name, "gl_BackSecondaryColor") == 0
- || strcmp(var->name, "gl_Color") == 0
- || strcmp(var->name, "gl_SecondaryColor") == 0)
- && earlier->type == var->type
- && earlier->mode == var->mode) {
- earlier->interpolation = var->interpolation;
- } else {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier);
- }
-
- continue;
- }
-
- /* By now, we know it's a new variable declaration (we didn't hit the
- * above "continue").
- *
- * From page 15 (page 21 of the PDF) of the GLSL 1.10 spec,
- *
- * "Identifiers starting with "gl_" are reserved for use by
- * OpenGL, and may not be declared in a shader as either a
- * variable or a function."
- */
- if (strncmp(decl->identifier, "gl_", 3) == 0)
- _mesa_glsl_error(& loc, state,
- "identifier `%s' uses reserved `gl_' prefix",
- decl->identifier);
-
- /* Add the variable to the symbol table. Note that the initializer's
- * IR was already processed earlier (though it hasn't been emitted yet),
- * without the variable in scope.
- *
- * This differs from most C-like languages, but it follows the GLSL
- * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50
- * spec:
- *
- * "Within a declaration, the scope of a name starts immediately
- * after the initializer if present or immediately after the name
- * being declared if not."
- */
- if (!state->symbols->add_variable(var)) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state, "name `%s' already taken in the "
- "current scope", decl->identifier);
- continue;
- }
-
- /* Push the variable declaration to the top. It means that all
- * the variable declarations will appear in a funny
- * last-to-first order, but otherwise we run into trouble if a
- * function is prototyped, a global var is decled, then the
- * function is defined with usage of the global var. See
- * glslparsertest's CorrectModule.frag.
- */
- instructions->push_head(var);
- instructions->append_list(&initializer_instructions);
- }
-
-
- /* Generally, variable declarations do not have r-values. However,
- * one is used for the declaration in
- *
- * while (bool b = some_condition()) {
- * ...
- * }
- *
- * so we return the rvalue from the last seen declaration here.
- */
- return result;
-}
-
-
-ir_rvalue *
-ast_parameter_declarator::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- const struct glsl_type *type;
- const char *name = NULL;
- YYLTYPE loc = this->get_location();
-
- type = this->type->specifier->glsl_type(& name, state);
-
- if (type == NULL) {
- if (name != NULL) {
- _mesa_glsl_error(& loc, state,
- "invalid type `%s' in declaration of `%s'",
- name, this->identifier);
- } else {
- _mesa_glsl_error(& loc, state,
- "invalid type in declaration of `%s'",
- this->identifier);
- }
-
- type = glsl_type::error_type;
- }
-
- /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec:
- *
- * "Functions that accept no input arguments need not use void in the
- * argument list because prototypes (or definitions) are required and
- * therefore there is no ambiguity when an empty argument list "( )" is
- * declared. The idiom "(void)" as a parameter list is provided for
- * convenience."
- *
- * Placing this check here prevents a void parameter being set up
- * for a function, which avoids tripping up checks for main taking
- * parameters and lookups of an unnamed symbol.
- */
- if (type->is_void()) {
- if (this->identifier != NULL)
- _mesa_glsl_error(& loc, state,
- "named parameter cannot have type `void'");
-
- is_void = true;
- return NULL;
- }
-
- if (formal_parameter && (this->identifier == NULL)) {
- _mesa_glsl_error(& loc, state, "formal parameter lacks a name");
- return NULL;
- }
-
- /* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...)
- * call already handled the "vec4[..] foo" case.
- */
- if (this->is_array) {
- type = process_array_type(&loc, type, this->array_size, state);
- }
-
- if (type->array_size() == 0) {
- _mesa_glsl_error(&loc, state, "arrays passed as parameters must have "
- "a declared size.");
- type = glsl_type::error_type;
- }
-
- is_void = false;
- ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in);
-
- /* Apply any specified qualifiers to the parameter declaration. Note that
- * for function parameters the default mode is 'in'.
- */
- apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc);
-
- instructions->push_tail(var);
-
- /* Parameter declarations do not have r-values.
- */
- return NULL;
-}
-
-
-void
-ast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters,
- bool formal,
- exec_list *ir_parameters,
- _mesa_glsl_parse_state *state)
-{
- ast_parameter_declarator *void_param = NULL;
- unsigned count = 0;
-
- foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) {
- param->formal_parameter = formal;
- param->hir(ir_parameters, state);
-
- if (param->is_void)
- void_param = param;
-
- count++;
- }
-
- if ((void_param != NULL) && (count > 1)) {
- YYLTYPE loc = void_param->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`void' parameter must be only parameter");
- }
-}
-
-
-void
-emit_function(_mesa_glsl_parse_state *state, exec_list *instructions,
- ir_function *f)
-{
- /* Emit the new function header */
- if (state->current_function == NULL) {
- instructions->push_tail(f);
- } else {
- /* IR invariants disallow function declarations or definitions nested
- * within other function definitions. Insert the new ir_function
- * block in the instruction sequence before the ir_function block
- * containing the current ir_function_signature.
- */
- ir_function *const curr =
- const_cast<ir_function *>(state->current_function->function());
-
- curr->insert_before(f);
- }
-}
-
-
-ir_rvalue *
-ast_function::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
- ir_function *f = NULL;
- ir_function_signature *sig = NULL;
- exec_list hir_parameters;
-
- const char *const name = identifier;
-
- /* From page 21 (page 27 of the PDF) of the GLSL 1.20 spec,
- *
- * "Function declarations (prototypes) cannot occur inside of functions;
- * they must be at global scope, or for the built-in functions, outside
- * the global scope."
- *
- * From page 27 (page 33 of the PDF) of the GLSL ES 1.00.16 spec,
- *
- * "User defined functions may only be defined within the global scope."
- *
- * Note that this language does not appear in GLSL 1.10.
- */
- if ((state->current_function != NULL) && (state->language_version != 110)) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state,
- "declaration of function `%s' not allowed within "
- "function body", name);
- }
-
- /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec,
- *
- * "Identifiers starting with "gl_" are reserved for use by
- * OpenGL, and may not be declared in a shader as either a
- * variable or a function."
- */
- if (strncmp(name, "gl_", 3) == 0) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state,
- "identifier `%s' uses reserved `gl_' prefix", name);
- }
-
- /* Convert the list of function parameters to HIR now so that they can be
- * used below to compare this function's signature with previously seen
- * signatures for functions with the same name.
- */
- ast_parameter_declarator::parameters_to_hir(& this->parameters,
- is_definition,
- & hir_parameters, state);
-
- const char *return_type_name;
- const glsl_type *return_type =
- this->return_type->specifier->glsl_type(& return_type_name, state);
-
- if (!return_type) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state,
- "function `%s' has undeclared return type `%s'",
- name, return_type_name);
- return_type = glsl_type::error_type;
- }
-
- /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec:
- * "No qualifier is allowed on the return type of a function."
- */
- if (this->return_type->has_qualifiers()) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(& loc, state,
- "function `%s' return type has qualifiers", name);
- }
-
- /* Verify that this function's signature either doesn't match a previously
- * seen signature for a function with the same name, or, if a match is found,
- * that the previously seen signature does not have an associated definition.
- */
- f = state->symbols->get_function(name);
- if (f != NULL && (state->es_shader || f->has_user_signature())) {
- sig = f->exact_matching_signature(&hir_parameters);
- if (sig != NULL) {
- const char *badvar = sig->qualifiers_match(&hir_parameters);
- if (badvar != NULL) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' "
- "qualifiers don't match prototype", name, badvar);
- }
-
- if (sig->return_type != return_type) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(&loc, state, "function `%s' return type doesn't "
- "match prototype", name);
- }
-
- if (is_definition && sig->is_defined) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "function `%s' redefined", name);
- }
- }
- } else {
- f = new(ctx) ir_function(name);
- if (!state->symbols->add_function(f)) {
- /* This function name shadows a non-function use of the same name. */
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(&loc, state, "function name `%s' conflicts with "
- "non-function", name);
- return NULL;
- }
-
- emit_function(state, instructions, f);
- }
-
- /* Verify the return type of main() */
- if (strcmp(name, "main") == 0) {
- if (! return_type->is_void()) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "main() must return void");
- }
-
- if (!hir_parameters.is_empty()) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "main() must not take any parameters");
- }
- }
-
- /* Finish storing the information about this new function in its signature.
- */
- if (sig == NULL) {
- sig = new(ctx) ir_function_signature(return_type);
- f->add_signature(sig);
- }
-
- sig->replace_parameters(&hir_parameters);
- signature = sig;
-
- /* Function declarations (prototypes) do not have r-values.
- */
- return NULL;
-}
-
-
-ir_rvalue *
-ast_function_definition::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- prototype->is_definition = true;
- prototype->hir(instructions, state);
-
- ir_function_signature *signature = prototype->signature;
- if (signature == NULL)
- return NULL;
-
- assert(state->current_function == NULL);
- state->current_function = signature;
- state->found_return = false;
-
- /* Duplicate parameters declared in the prototype as concrete variables.
- * Add these to the symbol table.
- */
- state->symbols->push_scope();
- foreach_iter(exec_list_iterator, iter, signature->parameters) {
- ir_variable *const var = ((ir_instruction *) iter.get())->as_variable();
-
- assert(var != NULL);
-
- /* The only way a parameter would "exist" is if two parameters have
- * the same name.
- */
- if (state->symbols->name_declared_this_scope(var->name)) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name);
- } else {
- state->symbols->add_variable(var);
- }
- }
-
- /* Convert the body of the function to HIR. */
- this->body->hir(&signature->body, state);
- signature->is_defined = true;
-
- state->symbols->pop_scope();
-
- assert(state->current_function == signature);
- state->current_function = NULL;
-
- if (!signature->return_type->is_void() && !state->found_return) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(& loc, state, "function `%s' has non-void return type "
- "%s, but no return statement",
- signature->function_name(),
- signature->return_type->name);
- }
-
- /* Function definitions do not have r-values.
- */
- return NULL;
-}
-
-
-ir_rvalue *
-ast_jump_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
-
- switch (mode) {
- case ast_return: {
- ir_return *inst;
- assert(state->current_function);
-
- if (opt_return_value) {
- if (state->current_function->return_type->base_type ==
- GLSL_TYPE_VOID) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`return` with a value, in function `%s' "
- "returning void",
- state->current_function->function_name());
- }
-
- ir_rvalue *const ret = opt_return_value->hir(instructions, state);
- assert(ret != NULL);
-
- /* Implicit conversions are not allowed for return values. */
- if (state->current_function->return_type != ret->type) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`return' with wrong type %s, in function `%s' "
- "returning %s",
- ret->type->name,
- state->current_function->function_name(),
- state->current_function->return_type->name);
- }
-
- inst = new(ctx) ir_return(ret);
- } else {
- if (state->current_function->return_type->base_type !=
- GLSL_TYPE_VOID) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`return' with no value, in function %s returning "
- "non-void",
- state->current_function->function_name());
- }
- inst = new(ctx) ir_return;
- }
-
- state->found_return = true;
- instructions->push_tail(inst);
- break;
- }
-
- case ast_discard:
- if (state->target != fragment_shader) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`discard' may only appear in a fragment shader");
- }
- instructions->push_tail(new(ctx) ir_discard);
- break;
-
- case ast_break:
- case ast_continue:
- /* FINISHME: Handle switch-statements. They cannot contain 'continue',
- * FINISHME: and they use a different IR instruction for 'break'.
- */
- /* FINISHME: Correctly handle the nesting. If a switch-statement is
- * FINISHME: inside a loop, a 'continue' is valid and will bind to the
- * FINISHME: loop.
- */
- if (state->loop_or_switch_nesting == NULL) {
- YYLTYPE loc = this->get_location();
-
- _mesa_glsl_error(& loc, state,
- "`%s' may only appear in a loop",
- (mode == ast_break) ? "break" : "continue");
- } else {
- ir_loop *const loop = state->loop_or_switch_nesting->as_loop();
-
- /* Inline the for loop expression again, since we don't know
- * where near the end of the loop body the normal copy of it
- * is going to be placed.
- */
- if (mode == ast_continue &&
- state->loop_or_switch_nesting_ast->rest_expression) {
- state->loop_or_switch_nesting_ast->rest_expression->hir(instructions,
- state);
- }
-
- if (loop != NULL) {
- ir_loop_jump *const jump =
- new(ctx) ir_loop_jump((mode == ast_break)
- ? ir_loop_jump::jump_break
- : ir_loop_jump::jump_continue);
- instructions->push_tail(jump);
- }
- }
-
- break;
- }
-
- /* Jump instructions do not have r-values.
- */
- return NULL;
-}
-
-
-ir_rvalue *
-ast_selection_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
-
- ir_rvalue *const condition = this->condition->hir(instructions, state);
-
- /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec:
- *
- * "Any expression whose type evaluates to a Boolean can be used as the
- * conditional expression bool-expression. Vector types are not accepted
- * as the expression to if."
- *
- * The checks are separated so that higher quality diagnostics can be
- * generated for cases where both rules are violated.
- */
- if (!condition->type->is_boolean() || !condition->type->is_scalar()) {
- YYLTYPE loc = this->condition->get_location();
-
- _mesa_glsl_error(& loc, state, "if-statement condition must be scalar "
- "boolean");
- }
-
- ir_if *const stmt = new(ctx) ir_if(condition);
-
- if (then_statement != NULL) {
- state->symbols->push_scope();
- then_statement->hir(& stmt->then_instructions, state);
- state->symbols->pop_scope();
- }
-
- if (else_statement != NULL) {
- state->symbols->push_scope();
- else_statement->hir(& stmt->else_instructions, state);
- state->symbols->pop_scope();
- }
-
- instructions->push_tail(stmt);
-
- /* if-statements do not have r-values.
- */
- return NULL;
-}
-
-
-void
-ast_iteration_statement::condition_to_hir(ir_loop *stmt,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
-
- if (condition != NULL) {
- ir_rvalue *const cond =
- condition->hir(& stmt->body_instructions, state);
-
- if ((cond == NULL)
- || !cond->type->is_boolean() || !cond->type->is_scalar()) {
- YYLTYPE loc = condition->get_location();
-
- _mesa_glsl_error(& loc, state,
- "loop condition must be scalar boolean");
- } else {
- /* As the first code in the loop body, generate a block that looks
- * like 'if (!condition) break;' as the loop termination condition.
- */
- ir_rvalue *const not_cond =
- new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond,
- NULL);
-
- ir_if *const if_stmt = new(ctx) ir_if(not_cond);
-
- ir_jump *const break_stmt =
- new(ctx) ir_loop_jump(ir_loop_jump::jump_break);
-
- if_stmt->then_instructions.push_tail(break_stmt);
- stmt->body_instructions.push_tail(if_stmt);
- }
- }
-}
-
-
-ir_rvalue *
-ast_iteration_statement::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- void *ctx = state;
-
- /* For-loops and while-loops start a new scope, but do-while loops do not.
- */
- if (mode != ast_do_while)
- state->symbols->push_scope();
-
- if (init_statement != NULL)
- init_statement->hir(instructions, state);
-
- ir_loop *const stmt = new(ctx) ir_loop();
- instructions->push_tail(stmt);
-
- /* Track the current loop and / or switch-statement nesting.
- */
- ir_instruction *const nesting = state->loop_or_switch_nesting;
- ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast;
-
- state->loop_or_switch_nesting = stmt;
- state->loop_or_switch_nesting_ast = this;
-
- if (mode != ast_do_while)
- condition_to_hir(stmt, state);
-
- if (body != NULL)
- body->hir(& stmt->body_instructions, state);
-
- if (rest_expression != NULL)
- rest_expression->hir(& stmt->body_instructions, state);
-
- if (mode == ast_do_while)
- condition_to_hir(stmt, state);
-
- if (mode != ast_do_while)
- state->symbols->pop_scope();
-
- /* Restore previous nesting before returning.
- */
- state->loop_or_switch_nesting = nesting;
- state->loop_or_switch_nesting_ast = nesting_ast;
-
- /* Loops do not have r-values.
- */
- return NULL;
-}
-
-
-ir_rvalue *
-ast_type_specifier::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- if (this->structure != NULL)
- return this->structure->hir(instructions, state);
-
- return NULL;
-}
-
-
-ir_rvalue *
-ast_struct_specifier::hir(exec_list *instructions,
- struct _mesa_glsl_parse_state *state)
-{
- unsigned decl_count = 0;
-
- /* Make an initial pass over the list of structure fields to determine how
- * many there are. Each element in this list is an ast_declarator_list.
- * This means that we actually need to count the number of elements in the
- * 'declarations' list in each of the elements.
- */
- foreach_list_typed (ast_declarator_list, decl_list, link,
- &this->declarations) {
- foreach_list_const (decl_ptr, & decl_list->declarations) {
- decl_count++;
- }
- }
-
- /* Allocate storage for the structure fields and process the field
- * declarations. As the declarations are processed, try to also convert
- * the types to HIR. This ensures that structure definitions embedded in
- * other structure definitions are processed.
- */
- glsl_struct_field *const fields = talloc_array(state, glsl_struct_field,
- decl_count);
-
- unsigned i = 0;
- foreach_list_typed (ast_declarator_list, decl_list, link,
- &this->declarations) {
- const char *type_name;
-
- decl_list->type->specifier->hir(instructions, state);
-
- /* Section 10.9 of the GLSL ES 1.00 specification states that
- * embedded structure definitions have been removed from the language.
- */
- if (state->es_shader && decl_list->type->specifier->structure != NULL) {
- YYLTYPE loc = this->get_location();
- _mesa_glsl_error(&loc, state, "Embedded structure definitions are "
- "not allowed in GLSL ES 1.00.");
- }
-
- const glsl_type *decl_type =
- decl_list->type->specifier->glsl_type(& type_name, state);
-
- foreach_list_typed (ast_declaration, decl, link,
- &decl_list->declarations) {
- const struct glsl_type *field_type = decl_type;
- if (decl->is_array) {
- YYLTYPE loc = decl->get_location();
- field_type = process_array_type(&loc, decl_type, decl->array_size,
- state);
- }
- fields[i].type = (field_type != NULL)
- ? field_type : glsl_type::error_type;
- fields[i].name = decl->identifier;
- i++;
- }
- }
-
- assert(i == decl_count);
-
- const glsl_type *t =
- glsl_type::get_record_instance(fields, decl_count, this->name);
-
- YYLTYPE loc = this->get_location();
- if (!state->symbols->add_type(name, t)) {
- _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name);
- } else {
-
- const glsl_type **s = (const glsl_type **)
- realloc(state->user_structures,
- sizeof(state->user_structures[0]) *
- (state->num_user_structures + 1));
- if (s != NULL) {
- s[state->num_user_structures] = t;
- state->user_structures = s;
- state->num_user_structures++;
- }
- }
-
- /* Structure type definitions do not have r-values.
- */
- return NULL;
-}
+/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +/** + * \file ast_to_hir.c + * Convert abstract syntax to to high-level intermediate reprensentation (HIR). + * + * During the conversion to HIR, the majority of the symantic checking is + * preformed on the program. This includes: + * + * * Symbol table management + * * Type checking + * * Function binding + * + * The majority of this work could be done during parsing, and the parser could + * probably generate HIR directly. However, this results in frequent changes + * to the parser code. Since we do not assume that every system this complier + * is built on will have Flex and Bison installed, we have to store the code + * generated by these tools in our version control system. In other parts of + * the system we've seen problems where a parser was changed but the generated + * code was not committed, merge conflicts where created because two developers + * had slightly different versions of Bison installed, etc. + * + * I have also noticed that running Bison generated parsers in GDB is very + * irritating. When you get a segfault on '$$ = $1->foo', you can't very + * well 'print $1' in GDB. + * + * As a result, my preference is to put as little C code as possible in the + * parser (and lexer) sources. + */ + +#include "main/core.h" /* for struct gl_extensions */ +#include "glsl_symbol_table.h" +#include "glsl_parser_extras.h" +#include "ast.h" +#include "glsl_types.h" +#include "ir.h" + +void +_mesa_ast_to_hir(exec_list *instructions, struct _mesa_glsl_parse_state *state) +{ + _mesa_glsl_initialize_variables(instructions, state); + _mesa_glsl_initialize_functions(state); + + state->symbols->language_version = state->language_version; + + state->current_function = NULL; + + /* Section 4.2 of the GLSL 1.20 specification states: + * "The built-in functions are scoped in a scope outside the global scope + * users declare global variables in. That is, a shader's global scope, + * available for user-defined functions and global variables, is nested + * inside the scope containing the built-in functions." + * + * Since built-in functions like ftransform() access built-in variables, + * it follows that those must be in the outer scope as well. + * + * We push scope here to create this nesting effect...but don't pop. + * This way, a shader's globals are still in the symbol table for use + * by the linker. + */ + state->symbols->push_scope(); + + foreach_list_typed (ast_node, ast, link, & state->translation_unit) + ast->hir(instructions, state); +} + + +/** + * If a conversion is available, convert one operand to a different type + * + * The \c from \c ir_rvalue is converted "in place". + * + * \param to Type that the operand it to be converted to + * \param from Operand that is being converted + * \param state GLSL compiler state + * + * \return + * If a conversion is possible (or unnecessary), \c true is returned. + * Otherwise \c false is returned. + */ +bool +apply_implicit_conversion(const glsl_type *to, ir_rvalue * &from, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + if (to->base_type == from->type->base_type) + return true; + + /* This conversion was added in GLSL 1.20. If the compilation mode is + * GLSL 1.10, the conversion is skipped. + */ + if (state->language_version < 120) + return false; + + /* From page 27 (page 33 of the PDF) of the GLSL 1.50 spec: + * + * "There are no implicit array or structure conversions. For + * example, an array of int cannot be implicitly converted to an + * array of float. There are no implicit conversions between + * signed and unsigned integers." + */ + /* FINISHME: The above comment is partially a lie. There is int/uint + * FINISHME: conversion for immediate constants. + */ + if (!to->is_float() || !from->type->is_numeric()) + return false; + + /* Convert to a floating point type with the same number of components + * as the original type - i.e. int to float, not int to vec4. + */ + to = glsl_type::get_instance(GLSL_TYPE_FLOAT, from->type->vector_elements, + from->type->matrix_columns); + + switch (from->type->base_type) { + case GLSL_TYPE_INT: + from = new(ctx) ir_expression(ir_unop_i2f, to, from, NULL); + break; + case GLSL_TYPE_UINT: + from = new(ctx) ir_expression(ir_unop_u2f, to, from, NULL); + break; + case GLSL_TYPE_BOOL: + from = new(ctx) ir_expression(ir_unop_b2f, to, from, NULL); + break; + default: + assert(0); + } + + return true; +} + + +static const struct glsl_type * +arithmetic_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, + bool multiply, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + const glsl_type *type_a = value_a->type; + const glsl_type *type_b = value_b->type; + + /* From GLSL 1.50 spec, page 56: + * + * "The arithmetic binary operators add (+), subtract (-), + * multiply (*), and divide (/) operate on integer and + * floating-point scalars, vectors, and matrices." + */ + if (!type_a->is_numeric() || !type_b->is_numeric()) { + _mesa_glsl_error(loc, state, + "Operands to arithmetic operators must be numeric"); + return glsl_type::error_type; + } + + + /* "If one operand is floating-point based and the other is + * not, then the conversions from Section 4.1.10 "Implicit + * Conversions" are applied to the non-floating-point-based operand." + */ + if (!apply_implicit_conversion(type_a, value_b, state) + && !apply_implicit_conversion(type_b, value_a, state)) { + _mesa_glsl_error(loc, state, + "Could not implicitly convert operands to " + "arithmetic operator"); + return glsl_type::error_type; + } + type_a = value_a->type; + type_b = value_b->type; + + /* "If the operands are integer types, they must both be signed or + * both be unsigned." + * + * From this rule and the preceeding conversion it can be inferred that + * both types must be GLSL_TYPE_FLOAT, or GLSL_TYPE_UINT, or GLSL_TYPE_INT. + * The is_numeric check above already filtered out the case where either + * type is not one of these, so now the base types need only be tested for + * equality. + */ + if (type_a->base_type != type_b->base_type) { + _mesa_glsl_error(loc, state, + "base type mismatch for arithmetic operator"); + return glsl_type::error_type; + } + + /* "All arithmetic binary operators result in the same fundamental type + * (signed integer, unsigned integer, or floating-point) as the + * operands they operate on, after operand type conversion. After + * conversion, the following cases are valid + * + * * The two operands are scalars. In this case the operation is + * applied, resulting in a scalar." + */ + if (type_a->is_scalar() && type_b->is_scalar()) + return type_a; + + /* "* One operand is a scalar, and the other is a vector or matrix. + * In this case, the scalar operation is applied independently to each + * component of the vector or matrix, resulting in the same size + * vector or matrix." + */ + if (type_a->is_scalar()) { + if (!type_b->is_scalar()) + return type_b; + } else if (type_b->is_scalar()) { + return type_a; + } + + /* All of the combinations of <scalar, scalar>, <vector, scalar>, + * <scalar, vector>, <scalar, matrix>, and <matrix, scalar> have been + * handled. + */ + assert(!type_a->is_scalar()); + assert(!type_b->is_scalar()); + + /* "* The two operands are vectors of the same size. In this case, the + * operation is done component-wise resulting in the same size + * vector." + */ + if (type_a->is_vector() && type_b->is_vector()) { + if (type_a == type_b) { + return type_a; + } else { + _mesa_glsl_error(loc, state, + "vector size mismatch for arithmetic operator"); + return glsl_type::error_type; + } + } + + /* All of the combinations of <scalar, scalar>, <vector, scalar>, + * <scalar, vector>, <scalar, matrix>, <matrix, scalar>, and + * <vector, vector> have been handled. At least one of the operands must + * be matrix. Further, since there are no integer matrix types, the base + * type of both operands must be float. + */ + assert(type_a->is_matrix() || type_b->is_matrix()); + assert(type_a->base_type == GLSL_TYPE_FLOAT); + assert(type_b->base_type == GLSL_TYPE_FLOAT); + + /* "* The operator is add (+), subtract (-), or divide (/), and the + * operands are matrices with the same number of rows and the same + * number of columns. In this case, the operation is done component- + * wise resulting in the same size matrix." + * * The operator is multiply (*), where both operands are matrices or + * one operand is a vector and the other a matrix. A right vector + * operand is treated as a column vector and a left vector operand as a + * row vector. In all these cases, it is required that the number of + * columns of the left operand is equal to the number of rows of the + * right operand. Then, the multiply (*) operation does a linear + * algebraic multiply, yielding an object that has the same number of + * rows as the left operand and the same number of columns as the right + * operand. Section 5.10 "Vector and Matrix Operations" explains in + * more detail how vectors and matrices are operated on." + */ + if (! multiply) { + if (type_a == type_b) + return type_a; + } else { + if (type_a->is_matrix() && type_b->is_matrix()) { + /* Matrix multiply. The columns of A must match the rows of B. Given + * the other previously tested constraints, this means the vector type + * of a row from A must be the same as the vector type of a column from + * B. + */ + if (type_a->row_type() == type_b->column_type()) { + /* The resulting matrix has the number of columns of matrix B and + * the number of rows of matrix A. We get the row count of A by + * looking at the size of a vector that makes up a column. The + * transpose (size of a row) is done for B. + */ + const glsl_type *const type = + glsl_type::get_instance(type_a->base_type, + type_a->column_type()->vector_elements, + type_b->row_type()->vector_elements); + assert(type != glsl_type::error_type); + + return type; + } + } else if (type_a->is_matrix()) { + /* A is a matrix and B is a column vector. Columns of A must match + * rows of B. Given the other previously tested constraints, this + * means the vector type of a row from A must be the same as the + * vector the type of B. + */ + if (type_a->row_type() == type_b) { + /* The resulting vector has a number of elements equal to + * the number of rows of matrix A. */ + const glsl_type *const type = + glsl_type::get_instance(type_a->base_type, + type_a->column_type()->vector_elements, + 1); + assert(type != glsl_type::error_type); + + return type; + } + } else { + assert(type_b->is_matrix()); + + /* A is a row vector and B is a matrix. Columns of A must match rows + * of B. Given the other previously tested constraints, this means + * the type of A must be the same as the vector type of a column from + * B. + */ + if (type_a == type_b->column_type()) { + /* The resulting vector has a number of elements equal to + * the number of columns of matrix B. */ + const glsl_type *const type = + glsl_type::get_instance(type_a->base_type, + type_b->row_type()->vector_elements, + 1); + assert(type != glsl_type::error_type); + + return type; + } + } + + _mesa_glsl_error(loc, state, "size mismatch for matrix multiplication"); + return glsl_type::error_type; + } + + + /* "All other cases are illegal." + */ + _mesa_glsl_error(loc, state, "type mismatch"); + return glsl_type::error_type; +} + + +static const struct glsl_type * +unary_arithmetic_result_type(const struct glsl_type *type, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + /* From GLSL 1.50 spec, page 57: + * + * "The arithmetic unary operators negate (-), post- and pre-increment + * and decrement (-- and ++) operate on integer or floating-point + * values (including vectors and matrices). All unary operators work + * component-wise on their operands. These result with the same type + * they operated on." + */ + if (!type->is_numeric()) { + _mesa_glsl_error(loc, state, + "Operands to arithmetic operators must be numeric"); + return glsl_type::error_type; + } + + return type; +} + +/** + * \brief Return the result type of a bit-logic operation. + * + * If the given types to the bit-logic operator are invalid, return + * glsl_type::error_type. + * + * \param type_a Type of LHS of bit-logic op + * \param type_b Type of RHS of bit-logic op + */ +static const struct glsl_type * +bit_logic_result_type(const struct glsl_type *type_a, + const struct glsl_type *type_b, + ast_operators op, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + if (state->language_version < 130) { + _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30"); + return glsl_type::error_type; + } + + /* From page 50 (page 56 of PDF) of GLSL 1.30 spec: + * + * "The bitwise operators and (&), exclusive-or (^), and inclusive-or + * (|). The operands must be of type signed or unsigned integers or + * integer vectors." + */ + if (!type_a->is_integer()) { + _mesa_glsl_error(loc, state, "LHS of `%s' must be an integer", + ast_expression::operator_string(op)); + return glsl_type::error_type; + } + if (!type_b->is_integer()) { + _mesa_glsl_error(loc, state, "RHS of `%s' must be an integer", + ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* "The fundamental types of the operands (signed or unsigned) must + * match," + */ + if (type_a->base_type != type_b->base_type) { + _mesa_glsl_error(loc, state, "operands of `%s' must have the same " + "base type", ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* "The operands cannot be vectors of differing size." */ + if (type_a->is_vector() && + type_b->is_vector() && + type_a->vector_elements != type_b->vector_elements) { + _mesa_glsl_error(loc, state, "operands of `%s' cannot be vectors of " + "different sizes", ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* "If one operand is a scalar and the other a vector, the scalar is + * applied component-wise to the vector, resulting in the same type as + * the vector. The fundamental types of the operands [...] will be the + * resulting fundamental type." + */ + if (type_a->is_scalar()) + return type_b; + else + return type_a; +} + +static const struct glsl_type * +modulus_result_type(const struct glsl_type *type_a, + const struct glsl_type *type_b, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + /* From GLSL 1.50 spec, page 56: + * "The operator modulus (%) operates on signed or unsigned integers or + * integer vectors. The operand types must both be signed or both be + * unsigned." + */ + if (!type_a->is_integer() || !type_b->is_integer() + || (type_a->base_type != type_b->base_type)) { + _mesa_glsl_error(loc, state, "type mismatch"); + return glsl_type::error_type; + } + + /* "The operands cannot be vectors of differing size. If one operand is + * a scalar and the other vector, then the scalar is applied component- + * wise to the vector, resulting in the same type as the vector. If both + * are vectors of the same size, the result is computed component-wise." + */ + if (type_a->is_vector()) { + if (!type_b->is_vector() + || (type_a->vector_elements == type_b->vector_elements)) + return type_a; + } else + return type_b; + + /* "The operator modulus (%) is not defined for any other data types + * (non-integer types)." + */ + _mesa_glsl_error(loc, state, "type mismatch"); + return glsl_type::error_type; +} + + +static const struct glsl_type * +relational_result_type(ir_rvalue * &value_a, ir_rvalue * &value_b, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + const glsl_type *type_a = value_a->type; + const glsl_type *type_b = value_b->type; + + /* From GLSL 1.50 spec, page 56: + * "The relational operators greater than (>), less than (<), greater + * than or equal (>=), and less than or equal (<=) operate only on + * scalar integer and scalar floating-point expressions." + */ + if (!type_a->is_numeric() + || !type_b->is_numeric() + || !type_a->is_scalar() + || !type_b->is_scalar()) { + _mesa_glsl_error(loc, state, + "Operands to relational operators must be scalar and " + "numeric"); + return glsl_type::error_type; + } + + /* "Either the operands' types must match, or the conversions from + * Section 4.1.10 "Implicit Conversions" will be applied to the integer + * operand, after which the types must match." + */ + if (!apply_implicit_conversion(type_a, value_b, state) + && !apply_implicit_conversion(type_b, value_a, state)) { + _mesa_glsl_error(loc, state, + "Could not implicitly convert operands to " + "relational operator"); + return glsl_type::error_type; + } + type_a = value_a->type; + type_b = value_b->type; + + if (type_a->base_type != type_b->base_type) { + _mesa_glsl_error(loc, state, "base type mismatch"); + return glsl_type::error_type; + } + + /* "The result is scalar Boolean." + */ + return glsl_type::bool_type; +} + +/** + * \brief Return the result type of a bit-shift operation. + * + * If the given types to the bit-shift operator are invalid, return + * glsl_type::error_type. + * + * \param type_a Type of LHS of bit-shift op + * \param type_b Type of RHS of bit-shift op + */ +static const struct glsl_type * +shift_result_type(const struct glsl_type *type_a, + const struct glsl_type *type_b, + ast_operators op, + struct _mesa_glsl_parse_state *state, YYLTYPE *loc) +{ + if (state->language_version < 130) { + _mesa_glsl_error(loc, state, "bit operations require GLSL 1.30"); + return glsl_type::error_type; + } + + /* From page 50 (page 56 of the PDF) of the GLSL 1.30 spec: + * + * "The shift operators (<<) and (>>). For both operators, the operands + * must be signed or unsigned integers or integer vectors. One operand + * can be signed while the other is unsigned." + */ + if (!type_a->is_integer()) { + _mesa_glsl_error(loc, state, "LHS of operator %s must be an integer or " + "integer vector", ast_expression::operator_string(op)); + return glsl_type::error_type; + + } + if (!type_b->is_integer()) { + _mesa_glsl_error(loc, state, "RHS of operator %s must be an integer or " + "integer vector", ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* "If the first operand is a scalar, the second operand has to be + * a scalar as well." + */ + if (type_a->is_scalar() && !type_b->is_scalar()) { + _mesa_glsl_error(loc, state, "If the first operand of %s is scalar, the " + "second must be scalar as well", + ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* If both operands are vectors, check that they have same number of + * elements. + */ + if (type_a->is_vector() && + type_b->is_vector() && + type_a->vector_elements != type_b->vector_elements) { + _mesa_glsl_error(loc, state, "Vector operands to operator %s must " + "have same number of elements", + ast_expression::operator_string(op)); + return glsl_type::error_type; + } + + /* "In all cases, the resulting type will be the same type as the left + * operand." + */ + return type_a; +} + +/** + * Validates that a value can be assigned to a location with a specified type + * + * Validates that \c rhs can be assigned to some location. If the types are + * not an exact match but an automatic conversion is possible, \c rhs will be + * converted. + * + * \return + * \c NULL if \c rhs cannot be assigned to a location with type \c lhs_type. + * Otherwise the actual RHS to be assigned will be returned. This may be + * \c rhs, or it may be \c rhs after some type conversion. + * + * \note + * In addition to being used for assignments, this function is used to + * type-check return values. + */ +ir_rvalue * +validate_assignment(struct _mesa_glsl_parse_state *state, + const glsl_type *lhs_type, ir_rvalue *rhs) +{ + /* If there is already some error in the RHS, just return it. Anything + * else will lead to an avalanche of error message back to the user. + */ + if (rhs->type->is_error()) + return rhs; + + /* If the types are identical, the assignment can trivially proceed. + */ + if (rhs->type == lhs_type) + return rhs; + + /* If the array element types are the same and the size of the LHS is zero, + * the assignment is okay. + * + * Note: Whole-array assignments are not permitted in GLSL 1.10, but this + * is handled by ir_dereference::is_lvalue. + */ + if (lhs_type->is_array() && rhs->type->is_array() + && (lhs_type->element_type() == rhs->type->element_type()) + && (lhs_type->array_size() == 0)) { + return rhs; + } + + /* Check for implicit conversion in GLSL 1.20 */ + if (apply_implicit_conversion(lhs_type, rhs, state)) { + if (rhs->type == lhs_type) + return rhs; + } + + return NULL; +} + +ir_rvalue * +do_assignment(exec_list *instructions, struct _mesa_glsl_parse_state *state, + ir_rvalue *lhs, ir_rvalue *rhs, + YYLTYPE lhs_loc) +{ + void *ctx = state; + bool error_emitted = (lhs->type->is_error() || rhs->type->is_error()); + + if (!error_emitted) { + if (!lhs->is_lvalue()) { + _mesa_glsl_error(& lhs_loc, state, "non-lvalue in assignment"); + error_emitted = true; + } + + if (state->es_shader && lhs->type->is_array()) { + _mesa_glsl_error(&lhs_loc, state, "whole array assignment is not " + "allowed in GLSL ES 1.00."); + error_emitted = true; + } + } + + ir_rvalue *new_rhs = validate_assignment(state, lhs->type, rhs); + if (new_rhs == NULL) { + _mesa_glsl_error(& lhs_loc, state, "type mismatch"); + } else { + rhs = new_rhs; + + /* If the LHS array was not declared with a size, it takes it size from + * the RHS. If the LHS is an l-value and a whole array, it must be a + * dereference of a variable. Any other case would require that the LHS + * is either not an l-value or not a whole array. + */ + if (lhs->type->array_size() == 0) { + ir_dereference *const d = lhs->as_dereference(); + + assert(d != NULL); + + ir_variable *const var = d->variable_referenced(); + + assert(var != NULL); + + if (var->max_array_access >= unsigned(rhs->type->array_size())) { + /* FINISHME: This should actually log the location of the RHS. */ + _mesa_glsl_error(& lhs_loc, state, "array size must be > %u due to " + "previous access", + var->max_array_access); + } + + var->type = glsl_type::get_array_instance(lhs->type->element_type(), + rhs->type->array_size()); + d->type = var->type; + } + } + + /* Most callers of do_assignment (assign, add_assign, pre_inc/dec, + * but not post_inc) need the converted assigned value as an rvalue + * to handle things like: + * + * i = j += 1; + * + * So we always just store the computed value being assigned to a + * temporary and return a deref of that temporary. If the rvalue + * ends up not being used, the temp will get copy-propagated out. + */ + ir_variable *var = new(ctx) ir_variable(rhs->type, "assignment_tmp", + ir_var_temporary); + ir_dereference_variable *deref_var = new(ctx) ir_dereference_variable(var); + instructions->push_tail(var); + instructions->push_tail(new(ctx) ir_assignment(deref_var, + rhs, + NULL)); + deref_var = new(ctx) ir_dereference_variable(var); + + if (!error_emitted) + instructions->push_tail(new(ctx) ir_assignment(lhs, deref_var, NULL)); + + return new(ctx) ir_dereference_variable(var); +} + +static ir_rvalue * +get_lvalue_copy(exec_list *instructions, ir_rvalue *lvalue) +{ + void *ctx = talloc_parent(lvalue); + ir_variable *var; + + var = new(ctx) ir_variable(lvalue->type, "_post_incdec_tmp", + ir_var_temporary); + instructions->push_tail(var); + var->mode = ir_var_auto; + + instructions->push_tail(new(ctx) ir_assignment(new(ctx) ir_dereference_variable(var), + lvalue, NULL)); + + /* Once we've created this temporary, mark it read only so it's no + * longer considered an lvalue. + */ + var->read_only = true; + + return new(ctx) ir_dereference_variable(var); +} + + +ir_rvalue * +ast_node::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + (void) instructions; + (void) state; + + return NULL; +} + +static void +mark_whole_array_access(ir_rvalue *access) +{ + ir_dereference_variable *deref = access->as_dereference_variable(); + + if (deref) { + deref->var->max_array_access = deref->type->length - 1; + } +} + +static ir_rvalue * +do_comparison(void *mem_ctx, int operation, ir_rvalue *op0, ir_rvalue *op1) +{ + int join_op; + ir_rvalue *cmp = NULL; + + if (operation == ir_binop_all_equal) + join_op = ir_binop_logic_and; + else + join_op = ir_binop_logic_or; + + switch (op0->type->base_type) { + case GLSL_TYPE_FLOAT: + case GLSL_TYPE_UINT: + case GLSL_TYPE_INT: + case GLSL_TYPE_BOOL: + return new(mem_ctx) ir_expression(operation, op0, op1); + + case GLSL_TYPE_ARRAY: { + for (unsigned int i = 0; i < op0->type->length; i++) { + ir_rvalue *e0, *e1, *result; + + e0 = new(mem_ctx) ir_dereference_array(op0->clone(mem_ctx, NULL), + new(mem_ctx) ir_constant(i)); + e1 = new(mem_ctx) ir_dereference_array(op1->clone(mem_ctx, NULL), + new(mem_ctx) ir_constant(i)); + result = do_comparison(mem_ctx, operation, e0, e1); + + if (cmp) { + cmp = new(mem_ctx) ir_expression(join_op, cmp, result); + } else { + cmp = result; + } + } + + mark_whole_array_access(op0); + mark_whole_array_access(op1); + break; + } + + case GLSL_TYPE_STRUCT: { + for (unsigned int i = 0; i < op0->type->length; i++) { + ir_rvalue *e0, *e1, *result; + const char *field_name = op0->type->fields.structure[i].name; + + e0 = new(mem_ctx) ir_dereference_record(op0->clone(mem_ctx, NULL), + field_name); + e1 = new(mem_ctx) ir_dereference_record(op1->clone(mem_ctx, NULL), + field_name); + result = do_comparison(mem_ctx, operation, e0, e1); + + if (cmp) { + cmp = new(mem_ctx) ir_expression(join_op, cmp, result); + } else { + cmp = result; + } + } + break; + } + + case GLSL_TYPE_ERROR: + case GLSL_TYPE_VOID: + case GLSL_TYPE_SAMPLER: + /* I assume a comparison of a struct containing a sampler just + * ignores the sampler present in the type. + */ + break; + + default: + assert(!"Should not get here."); + break; + } + + if (cmp == NULL) + cmp = new(mem_ctx) ir_constant(true); + + return cmp; +} + +ir_rvalue * +ast_expression::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + static const int operations[AST_NUM_OPERATORS] = { + -1, /* ast_assign doesn't convert to ir_expression. */ + -1, /* ast_plus doesn't convert to ir_expression. */ + ir_unop_neg, + ir_binop_add, + ir_binop_sub, + ir_binop_mul, + ir_binop_div, + ir_binop_mod, + ir_binop_lshift, + ir_binop_rshift, + ir_binop_less, + ir_binop_greater, + ir_binop_lequal, + ir_binop_gequal, + ir_binop_all_equal, + ir_binop_any_nequal, + ir_binop_bit_and, + ir_binop_bit_xor, + ir_binop_bit_or, + ir_unop_bit_not, + ir_binop_logic_and, + ir_binop_logic_xor, + ir_binop_logic_or, + ir_unop_logic_not, + + /* Note: The following block of expression types actually convert + * to multiple IR instructions. + */ + ir_binop_mul, /* ast_mul_assign */ + ir_binop_div, /* ast_div_assign */ + ir_binop_mod, /* ast_mod_assign */ + ir_binop_add, /* ast_add_assign */ + ir_binop_sub, /* ast_sub_assign */ + ir_binop_lshift, /* ast_ls_assign */ + ir_binop_rshift, /* ast_rs_assign */ + ir_binop_bit_and, /* ast_and_assign */ + ir_binop_bit_xor, /* ast_xor_assign */ + ir_binop_bit_or, /* ast_or_assign */ + + -1, /* ast_conditional doesn't convert to ir_expression. */ + ir_binop_add, /* ast_pre_inc. */ + ir_binop_sub, /* ast_pre_dec. */ + ir_binop_add, /* ast_post_inc. */ + ir_binop_sub, /* ast_post_dec. */ + -1, /* ast_field_selection doesn't conv to ir_expression. */ + -1, /* ast_array_index doesn't convert to ir_expression. */ + -1, /* ast_function_call doesn't conv to ir_expression. */ + -1, /* ast_identifier doesn't convert to ir_expression. */ + -1, /* ast_int_constant doesn't convert to ir_expression. */ + -1, /* ast_uint_constant doesn't conv to ir_expression. */ + -1, /* ast_float_constant doesn't conv to ir_expression. */ + -1, /* ast_bool_constant doesn't conv to ir_expression. */ + -1, /* ast_sequence doesn't convert to ir_expression. */ + }; + ir_rvalue *result = NULL; + ir_rvalue *op[3]; + const struct glsl_type *type = glsl_type::error_type; + bool error_emitted = false; + YYLTYPE loc; + + loc = this->get_location(); + + switch (this->oper) { + case ast_assign: { + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + result = do_assignment(instructions, state, op[0], op[1], + this->subexpressions[0]->get_location()); + error_emitted = result->type->is_error(); + type = result->type; + break; + } + + case ast_plus: + op[0] = this->subexpressions[0]->hir(instructions, state); + + type = unary_arithmetic_result_type(op[0]->type, state, & loc); + + error_emitted = type->is_error(); + + result = op[0]; + break; + + case ast_neg: + op[0] = this->subexpressions[0]->hir(instructions, state); + + type = unary_arithmetic_result_type(op[0]->type, state, & loc); + + error_emitted = type->is_error(); + + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], NULL); + break; + + case ast_add: + case ast_sub: + case ast_mul: + case ast_div: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + type = arithmetic_result_type(op[0], op[1], + (this->oper == ast_mul), + state, & loc); + error_emitted = type->is_error(); + + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + break; + + case ast_mod: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); + + assert(operations[this->oper] == ir_binop_mod); + + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + error_emitted = type->is_error(); + break; + + case ast_lshift: + case ast_rshift: + if (state->language_version < 130) { + _mesa_glsl_error(&loc, state, "operator %s requires GLSL 1.30", + operator_string(this->oper)); + error_emitted = true; + } + + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, + &loc); + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + break; + + case ast_less: + case ast_greater: + case ast_lequal: + case ast_gequal: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + type = relational_result_type(op[0], op[1], state, & loc); + + /* The relational operators must either generate an error or result + * in a scalar boolean. See page 57 of the GLSL 1.50 spec. + */ + assert(type->is_error() + || ((type->base_type == GLSL_TYPE_BOOL) + && type->is_scalar())); + + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + error_emitted = type->is_error(); + break; + + case ast_nequal: + case ast_equal: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + /* From page 58 (page 64 of the PDF) of the GLSL 1.50 spec: + * + * "The equality operators equal (==), and not equal (!=) + * operate on all types. They result in a scalar Boolean. If + * the operand types do not match, then there must be a + * conversion from Section 4.1.10 "Implicit Conversions" + * applied to one operand that can make them match, in which + * case this conversion is done." + */ + if ((!apply_implicit_conversion(op[0]->type, op[1], state) + && !apply_implicit_conversion(op[1]->type, op[0], state)) + || (op[0]->type != op[1]->type)) { + _mesa_glsl_error(& loc, state, "operands of `%s' must have the same " + "type", (this->oper == ast_equal) ? "==" : "!="); + error_emitted = true; + } else if ((state->language_version <= 110) + && (op[0]->type->is_array() || op[1]->type->is_array())) { + _mesa_glsl_error(& loc, state, "array comparisons forbidden in " + "GLSL 1.10"); + error_emitted = true; + } + + result = do_comparison(ctx, operations[this->oper], op[0], op[1]); + type = glsl_type::bool_type; + + assert(error_emitted || (result->type == glsl_type::bool_type)); + break; + + case ast_bit_and: + case ast_bit_xor: + case ast_bit_or: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, + state, &loc); + result = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + break; + + case ast_bit_not: + op[0] = this->subexpressions[0]->hir(instructions, state); + + if (state->language_version < 130) { + _mesa_glsl_error(&loc, state, "bit-wise operations require GLSL 1.30"); + error_emitted = true; + } + + if (!op[0]->type->is_integer()) { + _mesa_glsl_error(&loc, state, "operand of `~' must be an integer"); + error_emitted = true; + } + + type = op[0]->type; + result = new(ctx) ir_expression(ir_unop_bit_not, type, op[0], NULL); + break; + + case ast_logic_and: { + op[0] = this->subexpressions[0]->hir(instructions, state); + + if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[0]->get_location(); + + _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + + ir_constant *op0_const = op[0]->constant_expression_value(); + if (op0_const) { + if (op0_const->value.b[0]) { + op[1] = this->subexpressions[1]->hir(instructions, state); + + if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[1]->get_location(); + + _mesa_glsl_error(& loc, state, + "RHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + result = op[1]; + } else { + result = op0_const; + } + type = glsl_type::bool_type; + } else { + ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, + "and_tmp", + ir_var_temporary); + instructions->push_tail(tmp); + + ir_if *const stmt = new(ctx) ir_if(op[0]); + instructions->push_tail(stmt); + + op[1] = this->subexpressions[1]->hir(&stmt->then_instructions, state); + + if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[1]->get_location(); + + _mesa_glsl_error(& loc, state, + "RHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + + ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); + ir_assignment *const then_assign = + new(ctx) ir_assignment(then_deref, op[1], NULL); + stmt->then_instructions.push_tail(then_assign); + + ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); + ir_assignment *const else_assign = + new(ctx) ir_assignment(else_deref, new(ctx) ir_constant(false), NULL); + stmt->else_instructions.push_tail(else_assign); + + result = new(ctx) ir_dereference_variable(tmp); + type = tmp->type; + } + break; + } + + case ast_logic_or: { + op[0] = this->subexpressions[0]->hir(instructions, state); + + if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[0]->get_location(); + + _mesa_glsl_error(& loc, state, "LHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + + ir_constant *op0_const = op[0]->constant_expression_value(); + if (op0_const) { + if (op0_const->value.b[0]) { + result = op0_const; + } else { + op[1] = this->subexpressions[1]->hir(instructions, state); + + if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[1]->get_location(); + + _mesa_glsl_error(& loc, state, + "RHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + result = op[1]; + } + type = glsl_type::bool_type; + } else { + ir_variable *const tmp = new(ctx) ir_variable(glsl_type::bool_type, + "or_tmp", + ir_var_temporary); + instructions->push_tail(tmp); + + ir_if *const stmt = new(ctx) ir_if(op[0]); + instructions->push_tail(stmt); + + op[1] = this->subexpressions[1]->hir(&stmt->else_instructions, state); + + if (!op[1]->type->is_boolean() || !op[1]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[1]->get_location(); + + _mesa_glsl_error(& loc, state, "RHS of `%s' must be scalar boolean", + operator_string(this->oper)); + error_emitted = true; + } + + ir_dereference *const then_deref = new(ctx) ir_dereference_variable(tmp); + ir_assignment *const then_assign = + new(ctx) ir_assignment(then_deref, new(ctx) ir_constant(true), NULL); + stmt->then_instructions.push_tail(then_assign); + + ir_dereference *const else_deref = new(ctx) ir_dereference_variable(tmp); + ir_assignment *const else_assign = + new(ctx) ir_assignment(else_deref, op[1], NULL); + stmt->else_instructions.push_tail(else_assign); + + result = new(ctx) ir_dereference_variable(tmp); + type = tmp->type; + } + break; + } + + case ast_logic_xor: + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + + result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, + op[0], op[1]); + type = glsl_type::bool_type; + break; + + case ast_logic_not: + op[0] = this->subexpressions[0]->hir(instructions, state); + + if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[0]->get_location(); + + _mesa_glsl_error(& loc, state, + "operand of `!' must be scalar boolean"); + error_emitted = true; + } + + result = new(ctx) ir_expression(operations[this->oper], glsl_type::bool_type, + op[0], NULL); + type = glsl_type::bool_type; + break; + + case ast_mul_assign: + case ast_div_assign: + case ast_add_assign: + case ast_sub_assign: { + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + type = arithmetic_result_type(op[0], op[1], + (this->oper == ast_mul_assign), + state, & loc); + + ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + + result = do_assignment(instructions, state, + op[0]->clone(ctx, NULL), temp_rhs, + this->subexpressions[0]->get_location()); + type = result->type; + error_emitted = (op[0]->type->is_error()); + + /* GLSL 1.10 does not allow array assignment. However, we don't have to + * explicitly test for this because none of the binary expression + * operators allow array operands either. + */ + + break; + } + + case ast_mod_assign: { + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + + type = modulus_result_type(op[0]->type, op[1]->type, state, & loc); + + assert(operations[this->oper] == ir_binop_mod); + + ir_rvalue *temp_rhs; + temp_rhs = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + + result = do_assignment(instructions, state, + op[0]->clone(ctx, NULL), temp_rhs, + this->subexpressions[0]->get_location()); + type = result->type; + error_emitted = type->is_error(); + break; + } + + case ast_ls_assign: + case ast_rs_assign: { + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + type = shift_result_type(op[0]->type, op[1]->type, this->oper, state, + &loc); + ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], + type, op[0], op[1]); + result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), + temp_rhs, + this->subexpressions[0]->get_location()); + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + break; + } + + case ast_and_assign: + case ast_xor_assign: + case ast_or_assign: { + op[0] = this->subexpressions[0]->hir(instructions, state); + op[1] = this->subexpressions[1]->hir(instructions, state); + type = bit_logic_result_type(op[0]->type, op[1]->type, this->oper, + state, &loc); + ir_rvalue *temp_rhs = new(ctx) ir_expression(operations[this->oper], + type, op[0], op[1]); + result = do_assignment(instructions, state, op[0]->clone(ctx, NULL), + temp_rhs, + this->subexpressions[0]->get_location()); + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + break; + } + + case ast_conditional: { + op[0] = this->subexpressions[0]->hir(instructions, state); + + /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: + * + * "The ternary selection operator (?:). It operates on three + * expressions (exp1 ? exp2 : exp3). This operator evaluates the + * first expression, which must result in a scalar Boolean." + */ + if (!op[0]->type->is_boolean() || !op[0]->type->is_scalar()) { + YYLTYPE loc = this->subexpressions[0]->get_location(); + + _mesa_glsl_error(& loc, state, "?: condition must be scalar boolean"); + error_emitted = true; + } + + /* The :? operator is implemented by generating an anonymous temporary + * followed by an if-statement. The last instruction in each branch of + * the if-statement assigns a value to the anonymous temporary. This + * temporary is the r-value of the expression. + */ + exec_list then_instructions; + exec_list else_instructions; + + op[1] = this->subexpressions[1]->hir(&then_instructions, state); + op[2] = this->subexpressions[2]->hir(&else_instructions, state); + + /* From page 59 (page 65 of the PDF) of the GLSL 1.50 spec: + * + * "The second and third expressions can be any type, as + * long their types match, or there is a conversion in + * Section 4.1.10 "Implicit Conversions" that can be applied + * to one of the expressions to make their types match. This + * resulting matching type is the type of the entire + * expression." + */ + if ((!apply_implicit_conversion(op[1]->type, op[2], state) + && !apply_implicit_conversion(op[2]->type, op[1], state)) + || (op[1]->type != op[2]->type)) { + YYLTYPE loc = this->subexpressions[1]->get_location(); + + _mesa_glsl_error(& loc, state, "Second and third operands of ?: " + "operator must have matching types."); + error_emitted = true; + type = glsl_type::error_type; + } else { + type = op[1]->type; + } + + /* From page 33 (page 39 of the PDF) of the GLSL 1.10 spec: + * + * "The second and third expressions must be the same type, but can + * be of any type other than an array." + */ + if ((state->language_version <= 110) && type->is_array()) { + _mesa_glsl_error(& loc, state, "Second and third operands of ?: " + "operator must not be arrays."); + error_emitted = true; + } + + ir_constant *cond_val = op[0]->constant_expression_value(); + ir_constant *then_val = op[1]->constant_expression_value(); + ir_constant *else_val = op[2]->constant_expression_value(); + + if (then_instructions.is_empty() + && else_instructions.is_empty() + && (cond_val != NULL) && (then_val != NULL) && (else_val != NULL)) { + result = (cond_val->value.b[0]) ? then_val : else_val; + } else { + ir_variable *const tmp = + new(ctx) ir_variable(type, "conditional_tmp", ir_var_temporary); + instructions->push_tail(tmp); + + ir_if *const stmt = new(ctx) ir_if(op[0]); + instructions->push_tail(stmt); + + then_instructions.move_nodes_to(& stmt->then_instructions); + ir_dereference *const then_deref = + new(ctx) ir_dereference_variable(tmp); + ir_assignment *const then_assign = + new(ctx) ir_assignment(then_deref, op[1], NULL); + stmt->then_instructions.push_tail(then_assign); + + else_instructions.move_nodes_to(& stmt->else_instructions); + ir_dereference *const else_deref = + new(ctx) ir_dereference_variable(tmp); + ir_assignment *const else_assign = + new(ctx) ir_assignment(else_deref, op[2], NULL); + stmt->else_instructions.push_tail(else_assign); + + result = new(ctx) ir_dereference_variable(tmp); + } + break; + } + + case ast_pre_inc: + case ast_pre_dec: { + op[0] = this->subexpressions[0]->hir(instructions, state); + if (op[0]->type->base_type == GLSL_TYPE_FLOAT) + op[1] = new(ctx) ir_constant(1.0f); + else + op[1] = new(ctx) ir_constant(1); + + type = arithmetic_result_type(op[0], op[1], false, state, & loc); + + ir_rvalue *temp_rhs; + temp_rhs = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + + result = do_assignment(instructions, state, + op[0]->clone(ctx, NULL), temp_rhs, + this->subexpressions[0]->get_location()); + type = result->type; + error_emitted = op[0]->type->is_error(); + break; + } + + case ast_post_inc: + case ast_post_dec: { + op[0] = this->subexpressions[0]->hir(instructions, state); + if (op[0]->type->base_type == GLSL_TYPE_FLOAT) + op[1] = new(ctx) ir_constant(1.0f); + else + op[1] = new(ctx) ir_constant(1); + + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + + type = arithmetic_result_type(op[0], op[1], false, state, & loc); + + ir_rvalue *temp_rhs; + temp_rhs = new(ctx) ir_expression(operations[this->oper], type, + op[0], op[1]); + + /* Get a temporary of a copy of the lvalue before it's modified. + * This may get thrown away later. + */ + result = get_lvalue_copy(instructions, op[0]->clone(ctx, NULL)); + + (void)do_assignment(instructions, state, + op[0]->clone(ctx, NULL), temp_rhs, + this->subexpressions[0]->get_location()); + + type = result->type; + error_emitted = op[0]->type->is_error(); + break; + } + + case ast_field_selection: + result = _mesa_ast_field_selection_to_hir(this, instructions, state); + type = result->type; + break; + + case ast_array_index: { + YYLTYPE index_loc = subexpressions[1]->get_location(); + + op[0] = subexpressions[0]->hir(instructions, state); + op[1] = subexpressions[1]->hir(instructions, state); + + error_emitted = op[0]->type->is_error() || op[1]->type->is_error(); + + ir_rvalue *const array = op[0]; + + result = new(ctx) ir_dereference_array(op[0], op[1]); + + /* Do not use op[0] after this point. Use array. + */ + op[0] = NULL; + + + if (error_emitted) + break; + + if (!array->type->is_array() + && !array->type->is_matrix() + && !array->type->is_vector()) { + _mesa_glsl_error(& index_loc, state, + "cannot dereference non-array / non-matrix / " + "non-vector"); + error_emitted = true; + } + + if (!op[1]->type->is_integer()) { + _mesa_glsl_error(& index_loc, state, + "array index must be integer type"); + error_emitted = true; + } else if (!op[1]->type->is_scalar()) { + _mesa_glsl_error(& index_loc, state, + "array index must be scalar"); + error_emitted = true; + } + + /* If the array index is a constant expression and the array has a + * declared size, ensure that the access is in-bounds. If the array + * index is not a constant expression, ensure that the array has a + * declared size. + */ + ir_constant *const const_index = op[1]->constant_expression_value(); + if (const_index != NULL) { + const int idx = const_index->value.i[0]; + const char *type_name; + unsigned bound = 0; + + if (array->type->is_matrix()) { + type_name = "matrix"; + } else if (array->type->is_vector()) { + type_name = "vector"; + } else { + type_name = "array"; + } + + /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec: + * + * "It is illegal to declare an array with a size, and then + * later (in the same shader) index the same array with an + * integral constant expression greater than or equal to the + * declared size. It is also illegal to index an array with a + * negative constant expression." + */ + if (array->type->is_matrix()) { + if (array->type->row_type()->vector_elements <= idx) { + bound = array->type->row_type()->vector_elements; + } + } else if (array->type->is_vector()) { + if (array->type->vector_elements <= idx) { + bound = array->type->vector_elements; + } + } else { + if ((array->type->array_size() > 0) + && (array->type->array_size() <= idx)) { + bound = array->type->array_size(); + } + } + + if (bound > 0) { + _mesa_glsl_error(& loc, state, "%s index must be < %u", + type_name, bound); + error_emitted = true; + } else if (idx < 0) { + _mesa_glsl_error(& loc, state, "%s index must be >= 0", + type_name); + error_emitted = true; + } + + if (array->type->is_array()) { + /* If the array is a variable dereference, it dereferences the + * whole array, by definition. Use this to get the variable. + * + * FINISHME: Should some methods for getting / setting / testing + * FINISHME: array access limits be added to ir_dereference? + */ + ir_variable *const v = array->whole_variable_referenced(); + if ((v != NULL) && (unsigned(idx) > v->max_array_access)) + v->max_array_access = idx; + } + } else if (array->type->array_size() == 0) { + _mesa_glsl_error(&loc, state, "unsized array index must be constant"); + } else { + if (array->type->is_array()) { + /* whole_variable_referenced can return NULL if the array is a + * member of a structure. In this case it is safe to not update + * the max_array_access field because it is never used for fields + * of structures. + */ + ir_variable *v = array->whole_variable_referenced(); + if (v != NULL) + v->max_array_access = array->type->array_size(); + } + } + + /* From page 23 (29 of the PDF) of the GLSL 1.30 spec: + * + * "Samplers aggregated into arrays within a shader (using square + * brackets [ ]) can only be indexed with integral constant + * expressions [...]." + * + * This restriction was added in GLSL 1.30. Shaders using earlier version + * of the language should not be rejected by the compiler front-end for + * using this construct. This allows useful things such as using a loop + * counter as the index to an array of samplers. If the loop in unrolled, + * the code should compile correctly. Instead, emit a warning. + */ + if (array->type->is_array() && + array->type->element_type()->is_sampler() && + const_index == NULL) { + + if (state->language_version == 100) { + _mesa_glsl_warning(&loc, state, + "sampler arrays indexed with non-constant " + "expressions is optional in GLSL ES 1.00"); + } else if (state->language_version < 130) { + _mesa_glsl_warning(&loc, state, + "sampler arrays indexed with non-constant " + "expressions is forbidden in GLSL 1.30 and " + "later"); + } else { + _mesa_glsl_error(&loc, state, + "sampler arrays indexed with non-constant " + "expressions is forbidden in GLSL 1.30 and " + "later"); + error_emitted = true; + } + } + + if (error_emitted) + result->type = glsl_type::error_type; + + type = result->type; + break; + } + + case ast_function_call: + /* Should *NEVER* get here. ast_function_call should always be handled + * by ast_function_expression::hir. + */ + assert(0); + break; + + case ast_identifier: { + /* ast_identifier can appear several places in a full abstract syntax + * tree. This particular use must be at location specified in the grammar + * as 'variable_identifier'. + */ + ir_variable *var = + state->symbols->get_variable(this->primary_expression.identifier); + + result = new(ctx) ir_dereference_variable(var); + + if (var != NULL) { + var->used = true; + type = result->type; + } else { + _mesa_glsl_error(& loc, state, "`%s' undeclared", + this->primary_expression.identifier); + + error_emitted = true; + } + break; + } + + case ast_int_constant: + type = glsl_type::int_type; + result = new(ctx) ir_constant(this->primary_expression.int_constant); + break; + + case ast_uint_constant: + type = glsl_type::uint_type; + result = new(ctx) ir_constant(this->primary_expression.uint_constant); + break; + + case ast_float_constant: + type = glsl_type::float_type; + result = new(ctx) ir_constant(this->primary_expression.float_constant); + break; + + case ast_bool_constant: + type = glsl_type::bool_type; + result = new(ctx) ir_constant(bool(this->primary_expression.bool_constant)); + break; + + case ast_sequence: { + /* It should not be possible to generate a sequence in the AST without + * any expressions in it. + */ + assert(!this->expressions.is_empty()); + + /* The r-value of a sequence is the last expression in the sequence. If + * the other expressions in the sequence do not have side-effects (and + * therefore add instructions to the instruction list), they get dropped + * on the floor. + */ + foreach_list_typed (ast_node, ast, link, &this->expressions) + result = ast->hir(instructions, state); + + type = result->type; + + /* Any errors should have already been emitted in the loop above. + */ + error_emitted = true; + break; + } + } + + if (type->is_error() && !error_emitted) + _mesa_glsl_error(& loc, state, "type mismatch"); + + return result; +} + + +ir_rvalue * +ast_expression_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + /* It is possible to have expression statements that don't have an + * expression. This is the solitary semicolon: + * + * for (i = 0; i < 5; i++) + * ; + * + * In this case the expression will be NULL. Test for NULL and don't do + * anything in that case. + */ + if (expression != NULL) + expression->hir(instructions, state); + + /* Statements do not have r-values. + */ + return NULL; +} + + +ir_rvalue * +ast_compound_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + if (new_scope) + state->symbols->push_scope(); + + foreach_list_typed (ast_node, ast, link, &this->statements) + ast->hir(instructions, state); + + if (new_scope) + state->symbols->pop_scope(); + + /* Compound statements do not have r-values. + */ + return NULL; +} + + +static const glsl_type * +process_array_type(YYLTYPE *loc, const glsl_type *base, ast_node *array_size, + struct _mesa_glsl_parse_state *state) +{ + unsigned length = 0; + + /* FINISHME: Reject delcarations of multidimensional arrays. */ + + if (array_size != NULL) { + exec_list dummy_instructions; + ir_rvalue *const ir = array_size->hir(& dummy_instructions, state); + YYLTYPE loc = array_size->get_location(); + + /* FINISHME: Verify that the grammar forbids side-effects in array + * FINISHME: sizes. i.e., 'vec4 [x = 12] data' + */ + assert(dummy_instructions.is_empty()); + + if (ir != NULL) { + if (!ir->type->is_integer()) { + _mesa_glsl_error(& loc, state, "array size must be integer type"); + } else if (!ir->type->is_scalar()) { + _mesa_glsl_error(& loc, state, "array size must be scalar type"); + } else { + ir_constant *const size = ir->constant_expression_value(); + + if (size == NULL) { + _mesa_glsl_error(& loc, state, "array size must be a " + "constant valued expression"); + } else if (size->value.i[0] <= 0) { + _mesa_glsl_error(& loc, state, "array size must be > 0"); + } else { + assert(size->type == ir->type); + length = size->value.u[0]; + } + } + } + } else if (state->es_shader) { + /* Section 10.17 of the GLSL ES 1.00 specification states that unsized + * array declarations have been removed from the language. + */ + _mesa_glsl_error(loc, state, "unsized array declarations are not " + "allowed in GLSL ES 1.00."); + } + + return glsl_type::get_array_instance(base, length); +} + + +const glsl_type * +ast_type_specifier::glsl_type(const char **name, + struct _mesa_glsl_parse_state *state) const +{ + const struct glsl_type *type; + + type = state->symbols->get_type(this->type_name); + *name = this->type_name; + + if (this->is_array) { + YYLTYPE loc = this->get_location(); + type = process_array_type(&loc, type, this->array_size, state); + } + + return type; +} + + +static void +apply_type_qualifier_to_variable(const struct ast_type_qualifier *qual, + ir_variable *var, + struct _mesa_glsl_parse_state *state, + YYLTYPE *loc) +{ + if (qual->flags.q.invariant) { + if (var->used) { + _mesa_glsl_error(loc, state, + "variable `%s' may not be redeclared " + "`invariant' after being used", + var->name); + } else { + var->invariant = 1; + } + } + + /* FINISHME: Mark 'in' variables at global scope as read-only. */ + if (qual->flags.q.constant || qual->flags.q.attribute + || qual->flags.q.uniform + || (qual->flags.q.varying && (state->target == fragment_shader))) + var->read_only = 1; + + if (qual->flags.q.centroid) + var->centroid = 1; + + if (qual->flags.q.attribute && state->target != vertex_shader) { + var->type = glsl_type::error_type; + _mesa_glsl_error(loc, state, + "`attribute' variables may not be declared in the " + "%s shader", + _mesa_glsl_shader_target_name(state->target)); + } + + /* From page 25 (page 31 of the PDF) of the GLSL 1.10 spec: + * + * "The varying qualifier can be used only with the data types + * float, vec2, vec3, vec4, mat2, mat3, and mat4, or arrays of + * these." + */ + if (qual->flags.q.varying) { + const glsl_type *non_array_type; + + if (var->type && var->type->is_array()) + non_array_type = var->type->fields.array; + else + non_array_type = var->type; + + if (non_array_type && non_array_type->base_type != GLSL_TYPE_FLOAT) { + var->type = glsl_type::error_type; + _mesa_glsl_error(loc, state, + "varying variables must be of base type float"); + } + } + + /* If there is no qualifier that changes the mode of the variable, leave + * the setting alone. + */ + if (qual->flags.q.in && qual->flags.q.out) + var->mode = ir_var_inout; + else if (qual->flags.q.attribute || qual->flags.q.in + || (qual->flags.q.varying && (state->target == fragment_shader))) + var->mode = ir_var_in; + else if (qual->flags.q.out + || (qual->flags.q.varying && (state->target == vertex_shader))) + var->mode = ir_var_out; + else if (qual->flags.q.uniform) + var->mode = ir_var_uniform; + + if (state->all_invariant && (state->current_function == NULL)) { + switch (state->target) { + case vertex_shader: + if (var->mode == ir_var_out) + var->invariant = true; + break; + case geometry_shader: + if ((var->mode == ir_var_in) || (var->mode == ir_var_out)) + var->invariant = true; + break; + case fragment_shader: + if (var->mode == ir_var_in) + var->invariant = true; + break; + } + } + + if (qual->flags.q.flat) + var->interpolation = ir_var_flat; + else if (qual->flags.q.noperspective) + var->interpolation = ir_var_noperspective; + else + var->interpolation = ir_var_smooth; + + var->pixel_center_integer = qual->flags.q.pixel_center_integer; + var->origin_upper_left = qual->flags.q.origin_upper_left; + if ((qual->flags.q.origin_upper_left || qual->flags.q.pixel_center_integer) + && (strcmp(var->name, "gl_FragCoord") != 0)) { + const char *const qual_string = (qual->flags.q.origin_upper_left) + ? "origin_upper_left" : "pixel_center_integer"; + + _mesa_glsl_error(loc, state, + "layout qualifier `%s' can only be applied to " + "fragment shader input `gl_FragCoord'", + qual_string); + } + + if (qual->flags.q.explicit_location) { + const bool global_scope = (state->current_function == NULL); + bool fail = false; + const char *string = ""; + + /* In the vertex shader only shader inputs can be given explicit + * locations. + * + * In the fragment shader only shader outputs can be given explicit + * locations. + */ + switch (state->target) { + case vertex_shader: + if (!global_scope || (var->mode != ir_var_in)) { + fail = true; + string = "input"; + } + break; + + case geometry_shader: + _mesa_glsl_error(loc, state, + "geometry shader variables cannot be given " + "explicit locations\n"); + break; + + case fragment_shader: + if (!global_scope || (var->mode != ir_var_in)) { + fail = true; + string = "output"; + } + break; + }; + + if (fail) { + _mesa_glsl_error(loc, state, + "only %s shader %s variables can be given an " + "explicit location\n", + _mesa_glsl_shader_target_name(state->target), + string); + } else { + var->explicit_location = true; + + /* This bit of silliness is needed because invalid explicit locations + * are supposed to be flagged during linking. Small negative values + * biased by VERT_ATTRIB_GENERIC0 or FRAG_RESULT_DATA0 could alias + * built-in values (e.g., -16+VERT_ATTRIB_GENERIC0 = VERT_ATTRIB_POS). + * The linker needs to be able to differentiate these cases. This + * ensures that negative values stay negative. + */ + if (qual->location >= 0) { + var->location = (state->target == vertex_shader) + ? (qual->location + VERT_ATTRIB_GENERIC0) + : (qual->location + FRAG_RESULT_DATA0); + } else { + var->location = qual->location; + } + } + } + + /* Does the declaration use the 'layout' keyword? + */ + const bool uses_layout = qual->flags.q.pixel_center_integer + || qual->flags.q.origin_upper_left + || qual->flags.q.explicit_location; + + /* Does the declaration use the deprecated 'attribute' or 'varying' + * keywords? + */ + const bool uses_deprecated_qualifier = qual->flags.q.attribute + || qual->flags.q.varying; + + /* Is the 'layout' keyword used with parameters that allow relaxed checking. + * Many implementations of GL_ARB_fragment_coord_conventions_enable and some + * implementations (only Mesa?) GL_ARB_explicit_attrib_location_enable + * allowed the layout qualifier to be used with 'varying' and 'attribute'. + * These extensions and all following extensions that add the 'layout' + * keyword have been modified to require the use of 'in' or 'out'. + * + * The following extension do not allow the deprecated keywords: + * + * GL_AMD_conservative_depth + * GL_ARB_gpu_shader5 + * GL_ARB_separate_shader_objects + * GL_ARB_tesselation_shader + * GL_ARB_transform_feedback3 + * GL_ARB_uniform_buffer_object + * + * It is unknown whether GL_EXT_shader_image_load_store or GL_NV_gpu_shader5 + * allow layout with the deprecated keywords. + */ + const bool relaxed_layout_qualifier_checking = + state->ARB_fragment_coord_conventions_enable; + + if (uses_layout && uses_deprecated_qualifier) { + if (relaxed_layout_qualifier_checking) { + _mesa_glsl_warning(loc, state, + "`layout' qualifier may not be used with " + "`attribute' or `varying'"); + } else { + _mesa_glsl_error(loc, state, + "`layout' qualifier may not be used with " + "`attribute' or `varying'"); + } + } + + if (var->type->is_array() && state->language_version != 110) { + var->array_lvalue = true; + } +} + + +ir_rvalue * +ast_declarator_list::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + const struct glsl_type *decl_type; + const char *type_name = NULL; + ir_rvalue *result = NULL; + YYLTYPE loc = this->get_location(); + + /* From page 46 (page 52 of the PDF) of the GLSL 1.50 spec: + * + * "To ensure that a particular output variable is invariant, it is + * necessary to use the invariant qualifier. It can either be used to + * qualify a previously declared variable as being invariant + * + * invariant gl_Position; // make existing gl_Position be invariant" + * + * In these cases the parser will set the 'invariant' flag in the declarator + * list, and the type will be NULL. + */ + if (this->invariant) { + assert(this->type == NULL); + + if (state->current_function != NULL) { + _mesa_glsl_error(& loc, state, + "All uses of `invariant' keyword must be at global " + "scope\n"); + } + + foreach_list_typed (ast_declaration, decl, link, &this->declarations) { + assert(!decl->is_array); + assert(decl->array_size == NULL); + assert(decl->initializer == NULL); + + ir_variable *const earlier = + state->symbols->get_variable(decl->identifier); + if (earlier == NULL) { + _mesa_glsl_error(& loc, state, + "Undeclared variable `%s' cannot be marked " + "invariant\n", decl->identifier); + } else if ((state->target == vertex_shader) + && (earlier->mode != ir_var_out)) { + _mesa_glsl_error(& loc, state, + "`%s' cannot be marked invariant, vertex shader " + "outputs only\n", decl->identifier); + } else if ((state->target == fragment_shader) + && (earlier->mode != ir_var_in)) { + _mesa_glsl_error(& loc, state, + "`%s' cannot be marked invariant, fragment shader " + "inputs only\n", decl->identifier); + } else if (earlier->used) { + _mesa_glsl_error(& loc, state, + "variable `%s' may not be redeclared " + "`invariant' after being used", + earlier->name); + } else { + earlier->invariant = true; + } + } + + /* Invariant redeclarations do not have r-values. + */ + return NULL; + } + + assert(this->type != NULL); + assert(!this->invariant); + + /* The type specifier may contain a structure definition. Process that + * before any of the variable declarations. + */ + (void) this->type->specifier->hir(instructions, state); + + decl_type = this->type->specifier->glsl_type(& type_name, state); + if (this->declarations.is_empty()) { + /* The only valid case where the declaration list can be empty is when + * the declaration is setting the default precision of a built-in type + * (e.g., 'precision highp vec4;'). + */ + + if (decl_type != NULL) { + } else { + _mesa_glsl_error(& loc, state, "incomplete declaration"); + } + } + + foreach_list_typed (ast_declaration, decl, link, &this->declarations) { + const struct glsl_type *var_type; + ir_variable *var; + + /* FINISHME: Emit a warning if a variable declaration shadows a + * FINISHME: declaration at a higher scope. + */ + + if ((decl_type == NULL) || decl_type->is_void()) { + if (type_name != NULL) { + _mesa_glsl_error(& loc, state, + "invalid type `%s' in declaration of `%s'", + type_name, decl->identifier); + } else { + _mesa_glsl_error(& loc, state, + "invalid type in declaration of `%s'", + decl->identifier); + } + continue; + } + + if (decl->is_array) { + var_type = process_array_type(&loc, decl_type, decl->array_size, + state); + } else { + var_type = decl_type; + } + + var = new(ctx) ir_variable(var_type, decl->identifier, ir_var_auto); + + /* From page 22 (page 28 of the PDF) of the GLSL 1.10 specification; + * + * "Global variables can only use the qualifiers const, + * attribute, uni form, or varying. Only one may be + * specified. + * + * Local variables can only use the qualifier const." + * + * This is relaxed in GLSL 1.30. It is also relaxed by any extension + * that adds the 'layout' keyword. + */ + if ((state->language_version < 130) + && !state->ARB_explicit_attrib_location_enable + && !state->ARB_fragment_coord_conventions_enable) { + if (this->type->qualifier.flags.q.out) { + _mesa_glsl_error(& loc, state, + "`out' qualifier in declaration of `%s' " + "only valid for function parameters in %s.", + decl->identifier, state->version_string); + } + if (this->type->qualifier.flags.q.in) { + _mesa_glsl_error(& loc, state, + "`in' qualifier in declaration of `%s' " + "only valid for function parameters in %s.", + decl->identifier, state->version_string); + } + /* FINISHME: Test for other invalid qualifiers. */ + } + + apply_type_qualifier_to_variable(& this->type->qualifier, var, state, + & loc); + + if (this->type->qualifier.flags.q.invariant) { + if ((state->target == vertex_shader) && !(var->mode == ir_var_out || + var->mode == ir_var_inout)) { + /* FINISHME: Note that this doesn't work for invariant on + * a function signature outval + */ + _mesa_glsl_error(& loc, state, + "`%s' cannot be marked invariant, vertex shader " + "outputs only\n", var->name); + } else if ((state->target == fragment_shader) && + !(var->mode == ir_var_in || var->mode == ir_var_inout)) { + /* FINISHME: Note that this doesn't work for invariant on + * a function signature inval + */ + _mesa_glsl_error(& loc, state, + "`%s' cannot be marked invariant, fragment shader " + "inputs only\n", var->name); + } + } + + if (state->current_function != NULL) { + const char *mode = NULL; + const char *extra = ""; + + /* There is no need to check for 'inout' here because the parser will + * only allow that in function parameter lists. + */ + if (this->type->qualifier.flags.q.attribute) { + mode = "attribute"; + } else if (this->type->qualifier.flags.q.uniform) { + mode = "uniform"; + } else if (this->type->qualifier.flags.q.varying) { + mode = "varying"; + } else if (this->type->qualifier.flags.q.in) { + mode = "in"; + extra = " or in function parameter list"; + } else if (this->type->qualifier.flags.q.out) { + mode = "out"; + extra = " or in function parameter list"; + } + + if (mode) { + _mesa_glsl_error(& loc, state, + "%s variable `%s' must be declared at " + "global scope%s", + mode, var->name, extra); + } + } else if (var->mode == ir_var_in) { + if (state->target == vertex_shader) { + bool error_emitted = false; + + /* From page 31 (page 37 of the PDF) of the GLSL 1.50 spec: + * + * "Vertex shader inputs can only be float, floating-point + * vectors, matrices, signed and unsigned integers and integer + * vectors. Vertex shader inputs can also form arrays of these + * types, but not structures." + * + * From page 31 (page 27 of the PDF) of the GLSL 1.30 spec: + * + * "Vertex shader inputs can only be float, floating-point + * vectors, matrices, signed and unsigned integers and integer + * vectors. They cannot be arrays or structures." + * + * From page 23 (page 29 of the PDF) of the GLSL 1.20 spec: + * + * "The attribute qualifier can be used only with float, + * floating-point vectors, and matrices. Attribute variables + * cannot be declared as arrays or structures." + */ + const glsl_type *check_type = var->type->is_array() + ? var->type->fields.array : var->type; + + switch (check_type->base_type) { + case GLSL_TYPE_FLOAT: + break; + case GLSL_TYPE_UINT: + case GLSL_TYPE_INT: + if (state->language_version > 120) + break; + /* FALLTHROUGH */ + default: + _mesa_glsl_error(& loc, state, + "vertex shader input / attribute cannot have " + "type %s`%s'", + var->type->is_array() ? "array of " : "", + check_type->name); + error_emitted = true; + } + + if (!error_emitted && (state->language_version <= 130) + && var->type->is_array()) { + _mesa_glsl_error(& loc, state, + "vertex shader input / attribute cannot have " + "array type"); + error_emitted = true; + } + } + } + + /* Integer vertex outputs must be qualified with 'flat'. + * + * From section 4.3.6 of the GLSL 1.30 spec: + * "If a vertex output is a signed or unsigned integer or integer + * vector, then it must be qualified with the interpolation qualifier + * flat." + */ + if (state->language_version >= 130 + && state->target == vertex_shader + && state->current_function == NULL + && var->type->is_integer() + && var->mode == ir_var_out + && var->interpolation != ir_var_flat) { + + _mesa_glsl_error(&loc, state, "If a vertex output is an integer, " + "then it must be qualified with 'flat'"); + } + + + /* Process the initializer and add its instructions to a temporary + * list. This list will be added to the instruction stream (below) after + * the declaration is added. This is done because in some cases (such as + * redeclarations) the declaration may not actually be added to the + * instruction stream. + */ + exec_list initializer_instructions; + if (decl->initializer != NULL) { + YYLTYPE initializer_loc = decl->initializer->get_location(); + + /* From page 24 (page 30 of the PDF) of the GLSL 1.10 spec: + * + * "All uniform variables are read-only and are initialized either + * directly by an application via API commands, or indirectly by + * OpenGL." + */ + if ((state->language_version <= 110) + && (var->mode == ir_var_uniform)) { + _mesa_glsl_error(& initializer_loc, state, + "cannot initialize uniforms in GLSL 1.10"); + } + + if (var->type->is_sampler()) { + _mesa_glsl_error(& initializer_loc, state, + "cannot initialize samplers"); + } + + if ((var->mode == ir_var_in) && (state->current_function == NULL)) { + _mesa_glsl_error(& initializer_loc, state, + "cannot initialize %s shader input / %s", + _mesa_glsl_shader_target_name(state->target), + (state->target == vertex_shader) + ? "attribute" : "varying"); + } + + ir_dereference *const lhs = new(ctx) ir_dereference_variable(var); + ir_rvalue *rhs = decl->initializer->hir(&initializer_instructions, + state); + + /* Calculate the constant value if this is a const or uniform + * declaration. + */ + if (this->type->qualifier.flags.q.constant + || this->type->qualifier.flags.q.uniform) { + ir_rvalue *new_rhs = validate_assignment(state, var->type, rhs); + if (new_rhs != NULL) { + rhs = new_rhs; + + ir_constant *constant_value = rhs->constant_expression_value(); + if (!constant_value) { + _mesa_glsl_error(& initializer_loc, state, + "initializer of %s variable `%s' must be a " + "constant expression", + (this->type->qualifier.flags.q.constant) + ? "const" : "uniform", + decl->identifier); + if (var->type->is_numeric()) { + /* Reduce cascading errors. */ + var->constant_value = ir_constant::zero(ctx, var->type); + } + } else { + rhs = constant_value; + var->constant_value = constant_value; + } + } else { + _mesa_glsl_error(&initializer_loc, state, + "initializer of type %s cannot be assigned to " + "variable of type %s", + rhs->type->name, var->type->name); + if (var->type->is_numeric()) { + /* Reduce cascading errors. */ + var->constant_value = ir_constant::zero(ctx, var->type); + } + } + } + + if (rhs && !rhs->type->is_error()) { + bool temp = var->read_only; + if (this->type->qualifier.flags.q.constant) + var->read_only = false; + + /* Never emit code to initialize a uniform. + */ + const glsl_type *initializer_type; + if (!this->type->qualifier.flags.q.uniform) { + result = do_assignment(&initializer_instructions, state, + lhs, rhs, + this->get_location()); + initializer_type = result->type; + } else + initializer_type = rhs->type; + + /* If the declared variable is an unsized array, it must inherrit + * its full type from the initializer. A declaration such as + * + * uniform float a[] = float[](1.0, 2.0, 3.0, 3.0); + * + * becomes + * + * uniform float a[4] = float[](1.0, 2.0, 3.0, 3.0); + * + * The assignment generated in the if-statement (below) will also + * automatically handle this case for non-uniforms. + * + * If the declared variable is not an array, the types must + * already match exactly. As a result, the type assignment + * here can be done unconditionally. For non-uniforms the call + * to do_assignment can change the type of the initializer (via + * the implicit conversion rules). For uniforms the initializer + * must be a constant expression, and the type of that expression + * was validated above. + */ + var->type = initializer_type; + + var->read_only = temp; + } + } + + /* From page 23 (page 29 of the PDF) of the GLSL 1.10 spec: + * + * "It is an error to write to a const variable outside of + * its declaration, so they must be initialized when + * declared." + */ + if (this->type->qualifier.flags.q.constant && decl->initializer == NULL) { + _mesa_glsl_error(& loc, state, + "const declaration of `%s' must be initialized"); + } + + /* Check if this declaration is actually a re-declaration, either to + * resize an array or add qualifiers to an existing variable. + * + * This is allowed for variables in the current scope, or when at + * global scope (for built-ins in the implicit outer scope). + */ + ir_variable *earlier = state->symbols->get_variable(decl->identifier); + if (earlier != NULL && (state->current_function == NULL || + state->symbols->name_declared_this_scope(decl->identifier))) { + + /* From page 24 (page 30 of the PDF) of the GLSL 1.50 spec, + * + * "It is legal to declare an array without a size and then + * later re-declare the same name as an array of the same + * type and specify a size." + */ + if ((earlier->type->array_size() == 0) + && var->type->is_array() + && (var->type->element_type() == earlier->type->element_type())) { + /* FINISHME: This doesn't match the qualifiers on the two + * FINISHME: declarations. It's not 100% clear whether this is + * FINISHME: required or not. + */ + + /* From page 54 (page 60 of the PDF) of the GLSL 1.20 spec: + * + * "The size [of gl_TexCoord] can be at most + * gl_MaxTextureCoords." + */ + const unsigned size = unsigned(var->type->array_size()); + if ((strcmp("gl_TexCoord", var->name) == 0) + && (size > state->Const.MaxTextureCoords)) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "`gl_TexCoord' array size cannot " + "be larger than gl_MaxTextureCoords (%u)\n", + state->Const.MaxTextureCoords); + } else if ((size > 0) && (size <= earlier->max_array_access)) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "array size must be > %u due to " + "previous access", + earlier->max_array_access); + } + + earlier->type = var->type; + delete var; + var = NULL; + } else if (state->ARB_fragment_coord_conventions_enable + && strcmp(var->name, "gl_FragCoord") == 0 + && earlier->type == var->type + && earlier->mode == var->mode) { + /* Allow redeclaration of gl_FragCoord for ARB_fcc layout + * qualifiers. + */ + earlier->origin_upper_left = var->origin_upper_left; + earlier->pixel_center_integer = var->pixel_center_integer; + + /* According to section 4.3.7 of the GLSL 1.30 spec, + * the following built-in varaibles can be redeclared with an + * interpolation qualifier: + * * gl_FrontColor + * * gl_BackColor + * * gl_FrontSecondaryColor + * * gl_BackSecondaryColor + * * gl_Color + * * gl_SecondaryColor + */ + } else if (state->language_version >= 130 + && (strcmp(var->name, "gl_FrontColor") == 0 + || strcmp(var->name, "gl_BackColor") == 0 + || strcmp(var->name, "gl_FrontSecondaryColor") == 0 + || strcmp(var->name, "gl_BackSecondaryColor") == 0 + || strcmp(var->name, "gl_Color") == 0 + || strcmp(var->name, "gl_SecondaryColor") == 0) + && earlier->type == var->type + && earlier->mode == var->mode) { + earlier->interpolation = var->interpolation; + } else { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, "`%s' redeclared", decl->identifier); + } + + continue; + } + + /* By now, we know it's a new variable declaration (we didn't hit the + * above "continue"). + * + * From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, + * + * "Identifiers starting with "gl_" are reserved for use by + * OpenGL, and may not be declared in a shader as either a + * variable or a function." + */ + if (strncmp(decl->identifier, "gl_", 3) == 0) + _mesa_glsl_error(& loc, state, + "identifier `%s' uses reserved `gl_' prefix", + decl->identifier); + + /* Add the variable to the symbol table. Note that the initializer's + * IR was already processed earlier (though it hasn't been emitted yet), + * without the variable in scope. + * + * This differs from most C-like languages, but it follows the GLSL + * specification. From page 28 (page 34 of the PDF) of the GLSL 1.50 + * spec: + * + * "Within a declaration, the scope of a name starts immediately + * after the initializer if present or immediately after the name + * being declared if not." + */ + if (!state->symbols->add_variable(var)) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, "name `%s' already taken in the " + "current scope", decl->identifier); + continue; + } + + /* Push the variable declaration to the top. It means that all + * the variable declarations will appear in a funny + * last-to-first order, but otherwise we run into trouble if a + * function is prototyped, a global var is decled, then the + * function is defined with usage of the global var. See + * glslparsertest's CorrectModule.frag. + */ + instructions->push_head(var); + instructions->append_list(&initializer_instructions); + } + + + /* Generally, variable declarations do not have r-values. However, + * one is used for the declaration in + * + * while (bool b = some_condition()) { + * ... + * } + * + * so we return the rvalue from the last seen declaration here. + */ + return result; +} + + +ir_rvalue * +ast_parameter_declarator::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + const struct glsl_type *type; + const char *name = NULL; + YYLTYPE loc = this->get_location(); + + type = this->type->specifier->glsl_type(& name, state); + + if (type == NULL) { + if (name != NULL) { + _mesa_glsl_error(& loc, state, + "invalid type `%s' in declaration of `%s'", + name, this->identifier); + } else { + _mesa_glsl_error(& loc, state, + "invalid type in declaration of `%s'", + this->identifier); + } + + type = glsl_type::error_type; + } + + /* From page 62 (page 68 of the PDF) of the GLSL 1.50 spec: + * + * "Functions that accept no input arguments need not use void in the + * argument list because prototypes (or definitions) are required and + * therefore there is no ambiguity when an empty argument list "( )" is + * declared. The idiom "(void)" as a parameter list is provided for + * convenience." + * + * Placing this check here prevents a void parameter being set up + * for a function, which avoids tripping up checks for main taking + * parameters and lookups of an unnamed symbol. + */ + if (type->is_void()) { + if (this->identifier != NULL) + _mesa_glsl_error(& loc, state, + "named parameter cannot have type `void'"); + + is_void = true; + return NULL; + } + + if (formal_parameter && (this->identifier == NULL)) { + _mesa_glsl_error(& loc, state, "formal parameter lacks a name"); + return NULL; + } + + /* This only handles "vec4 foo[..]". The earlier specifier->glsl_type(...) + * call already handled the "vec4[..] foo" case. + */ + if (this->is_array) { + type = process_array_type(&loc, type, this->array_size, state); + } + + if (type->array_size() == 0) { + _mesa_glsl_error(&loc, state, "arrays passed as parameters must have " + "a declared size."); + type = glsl_type::error_type; + } + + is_void = false; + ir_variable *var = new(ctx) ir_variable(type, this->identifier, ir_var_in); + + /* Apply any specified qualifiers to the parameter declaration. Note that + * for function parameters the default mode is 'in'. + */ + apply_type_qualifier_to_variable(& this->type->qualifier, var, state, & loc); + + instructions->push_tail(var); + + /* Parameter declarations do not have r-values. + */ + return NULL; +} + + +void +ast_parameter_declarator::parameters_to_hir(exec_list *ast_parameters, + bool formal, + exec_list *ir_parameters, + _mesa_glsl_parse_state *state) +{ + ast_parameter_declarator *void_param = NULL; + unsigned count = 0; + + foreach_list_typed (ast_parameter_declarator, param, link, ast_parameters) { + param->formal_parameter = formal; + param->hir(ir_parameters, state); + + if (param->is_void) + void_param = param; + + count++; + } + + if ((void_param != NULL) && (count > 1)) { + YYLTYPE loc = void_param->get_location(); + + _mesa_glsl_error(& loc, state, + "`void' parameter must be only parameter"); + } +} + + +void +emit_function(_mesa_glsl_parse_state *state, exec_list *instructions, + ir_function *f) +{ + /* Emit the new function header */ + if (state->current_function == NULL) { + instructions->push_tail(f); + } else { + /* IR invariants disallow function declarations or definitions nested + * within other function definitions. Insert the new ir_function + * block in the instruction sequence before the ir_function block + * containing the current ir_function_signature. + */ + ir_function *const curr = + const_cast<ir_function *>(state->current_function->function()); + + curr->insert_before(f); + } +} + + +ir_rvalue * +ast_function::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + ir_function *f = NULL; + ir_function_signature *sig = NULL; + exec_list hir_parameters; + + const char *const name = identifier; + + /* From page 21 (page 27 of the PDF) of the GLSL 1.20 spec, + * + * "Function declarations (prototypes) cannot occur inside of functions; + * they must be at global scope, or for the built-in functions, outside + * the global scope." + * + * From page 27 (page 33 of the PDF) of the GLSL ES 1.00.16 spec, + * + * "User defined functions may only be defined within the global scope." + * + * Note that this language does not appear in GLSL 1.10. + */ + if ((state->current_function != NULL) && (state->language_version != 110)) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, + "declaration of function `%s' not allowed within " + "function body", name); + } + + /* From page 15 (page 21 of the PDF) of the GLSL 1.10 spec, + * + * "Identifiers starting with "gl_" are reserved for use by + * OpenGL, and may not be declared in a shader as either a + * variable or a function." + */ + if (strncmp(name, "gl_", 3) == 0) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, + "identifier `%s' uses reserved `gl_' prefix", name); + } + + /* Convert the list of function parameters to HIR now so that they can be + * used below to compare this function's signature with previously seen + * signatures for functions with the same name. + */ + ast_parameter_declarator::parameters_to_hir(& this->parameters, + is_definition, + & hir_parameters, state); + + const char *return_type_name; + const glsl_type *return_type = + this->return_type->specifier->glsl_type(& return_type_name, state); + + if (!return_type) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, + "function `%s' has undeclared return type `%s'", + name, return_type_name); + return_type = glsl_type::error_type; + } + + /* From page 56 (page 62 of the PDF) of the GLSL 1.30 spec: + * "No qualifier is allowed on the return type of a function." + */ + if (this->return_type->has_qualifiers()) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(& loc, state, + "function `%s' return type has qualifiers", name); + } + + /* Verify that this function's signature either doesn't match a previously + * seen signature for a function with the same name, or, if a match is found, + * that the previously seen signature does not have an associated definition. + */ + f = state->symbols->get_function(name); + if (f != NULL && (state->es_shader || f->has_user_signature())) { + sig = f->exact_matching_signature(&hir_parameters); + if (sig != NULL) { + const char *badvar = sig->qualifiers_match(&hir_parameters); + if (badvar != NULL) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(&loc, state, "function `%s' parameter `%s' " + "qualifiers don't match prototype", name, badvar); + } + + if (sig->return_type != return_type) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(&loc, state, "function `%s' return type doesn't " + "match prototype", name); + } + + if (is_definition && sig->is_defined) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "function `%s' redefined", name); + } + } + } else { + f = new(ctx) ir_function(name); + if (!state->symbols->add_function(f)) { + /* This function name shadows a non-function use of the same name. */ + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(&loc, state, "function name `%s' conflicts with " + "non-function", name); + return NULL; + } + + emit_function(state, instructions, f); + } + + /* Verify the return type of main() */ + if (strcmp(name, "main") == 0) { + if (! return_type->is_void()) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "main() must return void"); + } + + if (!hir_parameters.is_empty()) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "main() must not take any parameters"); + } + } + + /* Finish storing the information about this new function in its signature. + */ + if (sig == NULL) { + sig = new(ctx) ir_function_signature(return_type); + f->add_signature(sig); + } + + sig->replace_parameters(&hir_parameters); + signature = sig; + + /* Function declarations (prototypes) do not have r-values. + */ + return NULL; +} + + +ir_rvalue * +ast_function_definition::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + prototype->is_definition = true; + prototype->hir(instructions, state); + + ir_function_signature *signature = prototype->signature; + if (signature == NULL) + return NULL; + + assert(state->current_function == NULL); + state->current_function = signature; + state->found_return = false; + + /* Duplicate parameters declared in the prototype as concrete variables. + * Add these to the symbol table. + */ + state->symbols->push_scope(); + foreach_iter(exec_list_iterator, iter, signature->parameters) { + ir_variable *const var = ((ir_instruction *) iter.get())->as_variable(); + + assert(var != NULL); + + /* The only way a parameter would "exist" is if two parameters have + * the same name. + */ + if (state->symbols->name_declared_this_scope(var->name)) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, "parameter `%s' redeclared", var->name); + } else { + state->symbols->add_variable(var); + } + } + + /* Convert the body of the function to HIR. */ + this->body->hir(&signature->body, state); + signature->is_defined = true; + + state->symbols->pop_scope(); + + assert(state->current_function == signature); + state->current_function = NULL; + + if (!signature->return_type->is_void() && !state->found_return) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(& loc, state, "function `%s' has non-void return type " + "%s, but no return statement", + signature->function_name(), + signature->return_type->name); + } + + /* Function definitions do not have r-values. + */ + return NULL; +} + + +ir_rvalue * +ast_jump_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + switch (mode) { + case ast_return: { + ir_return *inst; + assert(state->current_function); + + if (opt_return_value) { + if (state->current_function->return_type->base_type == + GLSL_TYPE_VOID) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, + "`return` with a value, in function `%s' " + "returning void", + state->current_function->function_name()); + } + + ir_rvalue *const ret = opt_return_value->hir(instructions, state); + assert(ret != NULL); + + /* Implicit conversions are not allowed for return values. */ + if (state->current_function->return_type != ret->type) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, + "`return' with wrong type %s, in function `%s' " + "returning %s", + ret->type->name, + state->current_function->function_name(), + state->current_function->return_type->name); + } + + inst = new(ctx) ir_return(ret); + } else { + if (state->current_function->return_type->base_type != + GLSL_TYPE_VOID) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, + "`return' with no value, in function %s returning " + "non-void", + state->current_function->function_name()); + } + inst = new(ctx) ir_return; + } + + state->found_return = true; + instructions->push_tail(inst); + break; + } + + case ast_discard: + if (state->target != fragment_shader) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, + "`discard' may only appear in a fragment shader"); + } + instructions->push_tail(new(ctx) ir_discard); + break; + + case ast_break: + case ast_continue: + /* FINISHME: Handle switch-statements. They cannot contain 'continue', + * FINISHME: and they use a different IR instruction for 'break'. + */ + /* FINISHME: Correctly handle the nesting. If a switch-statement is + * FINISHME: inside a loop, a 'continue' is valid and will bind to the + * FINISHME: loop. + */ + if (state->loop_or_switch_nesting == NULL) { + YYLTYPE loc = this->get_location(); + + _mesa_glsl_error(& loc, state, + "`%s' may only appear in a loop", + (mode == ast_break) ? "break" : "continue"); + } else { + ir_loop *const loop = state->loop_or_switch_nesting->as_loop(); + + /* Inline the for loop expression again, since we don't know + * where near the end of the loop body the normal copy of it + * is going to be placed. + */ + if (mode == ast_continue && + state->loop_or_switch_nesting_ast->rest_expression) { + state->loop_or_switch_nesting_ast->rest_expression->hir(instructions, + state); + } + + if (loop != NULL) { + ir_loop_jump *const jump = + new(ctx) ir_loop_jump((mode == ast_break) + ? ir_loop_jump::jump_break + : ir_loop_jump::jump_continue); + instructions->push_tail(jump); + } + } + + break; + } + + /* Jump instructions do not have r-values. + */ + return NULL; +} + + +ir_rvalue * +ast_selection_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + ir_rvalue *const condition = this->condition->hir(instructions, state); + + /* From page 66 (page 72 of the PDF) of the GLSL 1.50 spec: + * + * "Any expression whose type evaluates to a Boolean can be used as the + * conditional expression bool-expression. Vector types are not accepted + * as the expression to if." + * + * The checks are separated so that higher quality diagnostics can be + * generated for cases where both rules are violated. + */ + if (!condition->type->is_boolean() || !condition->type->is_scalar()) { + YYLTYPE loc = this->condition->get_location(); + + _mesa_glsl_error(& loc, state, "if-statement condition must be scalar " + "boolean"); + } + + ir_if *const stmt = new(ctx) ir_if(condition); + + if (then_statement != NULL) { + state->symbols->push_scope(); + then_statement->hir(& stmt->then_instructions, state); + state->symbols->pop_scope(); + } + + if (else_statement != NULL) { + state->symbols->push_scope(); + else_statement->hir(& stmt->else_instructions, state); + state->symbols->pop_scope(); + } + + instructions->push_tail(stmt); + + /* if-statements do not have r-values. + */ + return NULL; +} + + +void +ast_iteration_statement::condition_to_hir(ir_loop *stmt, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + if (condition != NULL) { + ir_rvalue *const cond = + condition->hir(& stmt->body_instructions, state); + + if ((cond == NULL) + || !cond->type->is_boolean() || !cond->type->is_scalar()) { + YYLTYPE loc = condition->get_location(); + + _mesa_glsl_error(& loc, state, + "loop condition must be scalar boolean"); + } else { + /* As the first code in the loop body, generate a block that looks + * like 'if (!condition) break;' as the loop termination condition. + */ + ir_rvalue *const not_cond = + new(ctx) ir_expression(ir_unop_logic_not, glsl_type::bool_type, cond, + NULL); + + ir_if *const if_stmt = new(ctx) ir_if(not_cond); + + ir_jump *const break_stmt = + new(ctx) ir_loop_jump(ir_loop_jump::jump_break); + + if_stmt->then_instructions.push_tail(break_stmt); + stmt->body_instructions.push_tail(if_stmt); + } + } +} + + +ir_rvalue * +ast_iteration_statement::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + void *ctx = state; + + /* For-loops and while-loops start a new scope, but do-while loops do not. + */ + if (mode != ast_do_while) + state->symbols->push_scope(); + + if (init_statement != NULL) + init_statement->hir(instructions, state); + + ir_loop *const stmt = new(ctx) ir_loop(); + instructions->push_tail(stmt); + + /* Track the current loop and / or switch-statement nesting. + */ + ir_instruction *const nesting = state->loop_or_switch_nesting; + ast_iteration_statement *nesting_ast = state->loop_or_switch_nesting_ast; + + state->loop_or_switch_nesting = stmt; + state->loop_or_switch_nesting_ast = this; + + if (mode != ast_do_while) + condition_to_hir(stmt, state); + + if (body != NULL) + body->hir(& stmt->body_instructions, state); + + if (rest_expression != NULL) + rest_expression->hir(& stmt->body_instructions, state); + + if (mode == ast_do_while) + condition_to_hir(stmt, state); + + if (mode != ast_do_while) + state->symbols->pop_scope(); + + /* Restore previous nesting before returning. + */ + state->loop_or_switch_nesting = nesting; + state->loop_or_switch_nesting_ast = nesting_ast; + + /* Loops do not have r-values. + */ + return NULL; +} + + +ir_rvalue * +ast_type_specifier::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + if (this->structure != NULL) + return this->structure->hir(instructions, state); + + return NULL; +} + + +ir_rvalue * +ast_struct_specifier::hir(exec_list *instructions, + struct _mesa_glsl_parse_state *state) +{ + unsigned decl_count = 0; + + /* Make an initial pass over the list of structure fields to determine how + * many there are. Each element in this list is an ast_declarator_list. + * This means that we actually need to count the number of elements in the + * 'declarations' list in each of the elements. + */ + foreach_list_typed (ast_declarator_list, decl_list, link, + &this->declarations) { + foreach_list_const (decl_ptr, & decl_list->declarations) { + decl_count++; + } + } + + /* Allocate storage for the structure fields and process the field + * declarations. As the declarations are processed, try to also convert + * the types to HIR. This ensures that structure definitions embedded in + * other structure definitions are processed. + */ + glsl_struct_field *const fields = talloc_array(state, glsl_struct_field, + decl_count); + + unsigned i = 0; + foreach_list_typed (ast_declarator_list, decl_list, link, + &this->declarations) { + const char *type_name; + + decl_list->type->specifier->hir(instructions, state); + + /* Section 10.9 of the GLSL ES 1.00 specification states that + * embedded structure definitions have been removed from the language. + */ + if (state->es_shader && decl_list->type->specifier->structure != NULL) { + YYLTYPE loc = this->get_location(); + _mesa_glsl_error(&loc, state, "Embedded structure definitions are " + "not allowed in GLSL ES 1.00."); + } + + const glsl_type *decl_type = + decl_list->type->specifier->glsl_type(& type_name, state); + + foreach_list_typed (ast_declaration, decl, link, + &decl_list->declarations) { + const struct glsl_type *field_type = decl_type; + if (decl->is_array) { + YYLTYPE loc = decl->get_location(); + field_type = process_array_type(&loc, decl_type, decl->array_size, + state); + } + fields[i].type = (field_type != NULL) + ? field_type : glsl_type::error_type; + fields[i].name = decl->identifier; + i++; + } + } + + assert(i == decl_count); + + const glsl_type *t = + glsl_type::get_record_instance(fields, decl_count, this->name); + + YYLTYPE loc = this->get_location(); + if (!state->symbols->add_type(name, t)) { + _mesa_glsl_error(& loc, state, "struct `%s' previously defined", name); + } else { + + const glsl_type **s = (const glsl_type **) + realloc(state->user_structures, + sizeof(state->user_structures[0]) * + (state->num_user_structures + 1)); + if (s != NULL) { + s[state->num_user_structures] = t; + state->user_structures = s; + state->num_user_structures++; + } + } + + /* Structure type definitions do not have r-values. + */ + return NULL; +} diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c index 57267b0d3..39aabdb75 100644 --- a/mesalib/src/mesa/main/extensions.c +++ b/mesalib/src/mesa/main/extensions.c @@ -1,918 +1,919 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.6
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/**
- * \file
- * \brief Extension handling
- */
-
-
-#include "glheader.h"
-#include "imports.h"
-#include "context.h"
-#include "extensions.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-
-enum {
- DISABLE = 0,
- GL = 1 << API_OPENGL,
- ES1 = 1 << API_OPENGLES,
- ES2 = 1 << API_OPENGLES2,
-};
-
-/**
- * \brief An element of the \c extension_table.
- */
-struct extension {
- /** Name of extension, such as "GL_ARB_depth_clamp". */
- const char *name;
-
- /** Offset (in bytes) of the corresponding member in struct gl_extensions. */
- size_t offset;
-
- /** Set of API's in which the extension exists, as a bitset. */
- uint8_t api_set;
-};
-
-
-/**
- * Given a member \c x of struct gl_extensions, return offset of
- * \c x in bytes.
- */
-#define o(x) offsetof(struct gl_extensions, x)
-
-
-/**
- * \brief Table of supported OpenGL extensions for all API's.
- *
- * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions.
- */
-static const struct extension extension_table[] = {
- /* ARB Extensions */
- { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended), GL },
- { "GL_ARB_copy_buffer", o(ARB_copy_buffer), GL },
- { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float), GL },
- { "GL_ARB_depth_clamp", o(ARB_depth_clamp), GL },
- { "GL_ARB_depth_texture", o(ARB_depth_texture), GL },
- { "GL_ARB_draw_buffers", o(ARB_draw_buffers), GL },
- { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex), GL },
- { "GL_ARB_draw_instanced", o(ARB_draw_instanced), GL },
- { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location), GL },
- { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions), GL },
- { "GL_ARB_fragment_program", o(ARB_fragment_program), GL },
- { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow), GL },
- { "GL_ARB_fragment_shader", o(ARB_fragment_shader), GL },
- { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object), GL },
- { "GL_ARB_half_float_pixel", o(ARB_half_float_pixel), GL },
- { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex), GL },
- { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays), GL },
- { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range), GL },
- { "GL_ARB_multisample", o(ARB_multisample), GL },
- { "GL_ARB_multitexture", o(ARB_multitexture), GL },
- { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2), GL },
- { "GL_ARB_occlusion_query", o(ARB_occlusion_query), GL },
- { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object), GL },
- { "GL_ARB_point_parameters", o(EXT_point_parameters), GL },
- { "GL_ARB_point_sprite", o(ARB_point_sprite), GL },
- { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex), GL },
- { "GL_ARB_sampler_objects", o(ARB_sampler_objects), GL },
- { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map), GL },
- { "GL_ARB_shader_objects", o(ARB_shader_objects), GL },
- { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export), GL },
- { "GL_ARB_shading_language_100", o(ARB_shading_language_100), GL },
- { "GL_ARB_shadow_ambient", o(ARB_shadow_ambient), GL },
- { "GL_ARB_shadow", o(ARB_shadow), GL },
- { "GL_ARB_sync", o(ARB_sync), GL },
- { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp), GL },
- { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object), GL },
- { "GL_ARB_texture_compression", o(ARB_texture_compression), GL },
- { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL },
- { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map), GL },
- { "GL_ARB_texture_env_add", o(EXT_texture_env_add), GL },
- { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine), GL },
- { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar), GL },
- { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3), GL },
- { "GL_ARB_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL },
- { "GL_ARB_texture_multisample", o(ARB_texture_multisample), GL },
- { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two), GL },
- { "GL_ARB_texture_rectangle", o(NV_texture_rectangle), GL },
- { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui), GL },
- { "GL_ARB_texture_rg", o(ARB_texture_rg), GL },
- { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle), GL },
- { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2), GL },
- { "GL_ARB_transpose_matrix", o(ARB_transpose_matrix), GL },
- { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object), GL },
- { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra), GL },
- { "GL_ARB_vertex_array_object", o(ARB_vertex_array_object), GL },
- { "GL_ARB_vertex_buffer_object", o(ARB_vertex_buffer_object), GL },
- { "GL_ARB_vertex_program", o(ARB_vertex_program), GL },
- { "GL_ARB_vertex_shader", o(ARB_vertex_shader), GL },
- { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev), GL },
- { "GL_ARB_window_pos", o(ARB_window_pos), GL },
-
- /* EXT extensions */
- { "GL_EXT_abgr", o(EXT_abgr), GL },
- { "GL_EXT_bgra", o(EXT_bgra), GL },
- { "GL_EXT_blend_color", o(EXT_blend_color), GL },
- { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate), GL },
- { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate), GL },
- { "GL_EXT_blend_logic_op", o(EXT_blend_logic_op), GL },
- { "GL_EXT_blend_minmax", o(EXT_blend_minmax), GL | ES1 | ES2 },
- { "GL_EXT_blend_subtract", o(EXT_blend_subtract), GL },
- { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint), GL },
- { "GL_EXT_compiled_vertex_array", o(EXT_compiled_vertex_array), GL },
- { "GL_EXT_copy_texture", o(EXT_copy_texture), GL },
- { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test), GL },
- { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2), GL },
- { "GL_EXT_draw_instanced", o(ARB_draw_instanced), GL },
- { "GL_EXT_draw_range_elements", o(EXT_draw_range_elements), GL },
- { "GL_EXT_fog_coord", o(EXT_fog_coord), GL },
- { "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit), GL },
- { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample), GL },
- { "GL_EXT_framebuffer_object", o(EXT_framebuffer_object), GL },
- { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL },
- { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters), GL },
- { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4), GL },
- { "GL_EXT_multi_draw_arrays", o(EXT_multi_draw_arrays), GL | ES1 | ES2 },
- { "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil), GL },
- { "GL_EXT_packed_float", o(EXT_packed_float), GL },
- { "GL_EXT_packed_pixels", o(EXT_packed_pixels), GL },
- { "GL_EXT_paletted_texture", o(EXT_paletted_texture), GL },
- { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object), GL },
- { "GL_EXT_point_parameters", o(EXT_point_parameters), GL },
- { "GL_EXT_polygon_offset", o(EXT_polygon_offset), GL },
- { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex), GL },
- { "GL_EXT_rescale_normal", o(EXT_rescale_normal), GL },
- { "GL_EXT_secondary_color", o(EXT_secondary_color), GL },
- { "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects), GL },
- { "GL_EXT_separate_specular_color", o(EXT_separate_specular_color), GL },
- { "GL_EXT_shadow_funcs", o(EXT_shadow_funcs), GL },
- { "GL_EXT_shared_texture_palette", o(EXT_shared_texture_palette), GL },
- { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side), GL },
- { "GL_EXT_stencil_wrap", o(EXT_stencil_wrap), GL },
- { "GL_EXT_subtexture", o(EXT_subtexture), GL },
- { "GL_EXT_texture3D", o(EXT_texture3D), GL },
- { "GL_EXT_texture_array", o(EXT_texture_array), GL },
- { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2 },
- { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL },
- { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL },
- { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map), GL },
- { "GL_EXT_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL },
- { "GL_EXT_texture_env_add", o(EXT_texture_env_add), GL },
- { "GL_EXT_texture_env_combine", o(EXT_texture_env_combine), GL },
- { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3), GL },
- { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic), GL | ES1 | ES2 },
- { "GL_EXT_texture_format_BGRA8888", o(EXT_texture_format_BGRA8888), ES1 | ES2 },
- { "GL_EXT_texture_integer", o(EXT_texture_integer), GL },
- { "GL_EXT_texture_lod_bias", o(EXT_texture_lod_bias), GL | ES1 },
- { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp), GL },
- { "GL_EXT_texture_object", o(EXT_texture_object), GL },
- { "GL_EXT_texture", o(EXT_texture), GL },
- { "GL_EXT_texture_rectangle", o(NV_texture_rectangle), GL },
- { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent), GL },
- { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB), GL },
- { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle), GL },
- { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true), ES2 },
- { "GL_EXT_timer_query", o(EXT_timer_query), GL },
- { "GL_EXT_transform_feedback", o(EXT_transform_feedback), GL },
- { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra), GL },
- { "GL_EXT_vertex_array", o(EXT_vertex_array), GL },
- { "GL_EXT_vertex_array_set", o(EXT_vertex_array_set), GL },
-
- /* OES extensions */
- { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate), ES1 },
- { "GL_OES_blend_func_separate", o(EXT_blend_func_separate), ES1 },
- { "GL_OES_blend_subtract", o(EXT_blend_subtract), ES1 },
- { "GL_OES_byte_coordinates", o(dummy_true), ES1 },
- { "GL_OES_compressed_paletted_texture", o(dummy_false), DISABLE },
- { "GL_OES_depth24", o(EXT_framebuffer_object), ES1 | ES2 },
- { "GL_OES_depth32", o(dummy_false), DISABLE },
- { "GL_OES_depth_texture", o(ARB_depth_texture), ES2 },
-#if FEATURE_OES_draw_texture
- { "GL_OES_draw_texture", o(OES_draw_texture), ES1 | ES2 },
-#endif
-#if FEATURE_OES_EGL_image
- /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */
- { "GL_OES_EGL_image", o(OES_EGL_image), GL | ES1 | ES2 },
-#endif
- { "GL_OES_element_index_uint", o(EXT_vertex_array), ES1 | ES2 },
- { "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object), ES1 | ES2 },
- { "GL_OES_fixed_point", o(dummy_true), ES1 },
- { "GL_OES_framebuffer_object", o(EXT_framebuffer_object), ES1 },
- { "GL_OES_mapbuffer", o(ARB_vertex_buffer_object), ES1 | ES2 },
- { "GL_OES_matrix_get", o(dummy_true), ES1 },
- { "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil), ES1 | ES2 },
- { "GL_OES_point_size_array", o(dummy_true), ES1 },
- { "GL_OES_point_sprite", o(ARB_point_sprite), ES1 },
- { "GL_OES_query_matrix", o(dummy_true), ES1 },
- { "GL_OES_read_format", o(OES_read_format), GL | ES1 },
- { "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object), ES1 | ES2 },
- { "GL_OES_single_precision", o(dummy_true), ES1 },
- { "GL_OES_standard_derivatives", o(ARB_fragment_shader), ES2 },
- { "GL_OES_stencil1", o(dummy_false), DISABLE },
- { "GL_OES_stencil4", o(dummy_false), DISABLE },
- { "GL_OES_stencil8", o(EXT_framebuffer_object), ES1 | ES2 },
- { "GL_OES_stencil_wrap", o(EXT_stencil_wrap), ES1 },
- /* GL_OES_texture_3D is disabled due to missing GLSL support. */
- { "GL_OES_texture_3D", o(EXT_texture3D), DISABLE },
- { "GL_OES_texture_cube_map", o(ARB_texture_cube_map), ES1 },
- { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar), ES1 },
- { "GL_OES_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), ES1 },
- { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two), ES2 },
-
- /* Vendor extensions */
- { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1), GL },
- { "GL_APPLE_client_storage", o(APPLE_client_storage), GL },
- { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable), GL },
- { "GL_APPLE_packed_pixels", o(APPLE_packed_pixels), GL },
- { "GL_APPLE_vertex_array_object", o(APPLE_vertex_array_object), GL },
- { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate), GL },
- { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap), GL },
- { "GL_ATI_fragment_shader", o(ATI_fragment_shader), GL },
- { "GL_ATI_separate_stencil", o(ATI_separate_stencil), GL },
- { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GL },
- { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL },
- { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays), GL },
- { "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip), GL },
- { "GL_IBM_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL },
- { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate), GL },
- { "GL_MESA_pack_invert", o(MESA_pack_invert), GL },
- { "GL_MESA_resize_buffers", o(MESA_resize_buffers), GL },
- { "GL_MESA_texture_array", o(MESA_texture_array), GL },
- { "GL_MESA_texture_signed_rgba", o(MESA_texture_signed_rgba), GL },
- { "GL_MESA_window_pos", o(ARB_window_pos), GL },
- { "GL_MESAX_texture_float", o(ARB_texture_float), GL },
- { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL },
- { "GL_NV_blend_square", o(NV_blend_square), GL },
- { "GL_NV_conditional_render", o(NV_conditional_render), GL },
- { "GL_NV_depth_clamp", o(ARB_depth_clamp), GL },
- { "GL_NV_fragment_program", o(NV_fragment_program), GL },
- { "GL_NV_fragment_program_option", o(NV_fragment_program_option), GL },
- { "GL_NV_light_max_exponent", o(NV_light_max_exponent), GL },
- { "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil), GL },
- { "GL_NV_point_sprite", o(NV_point_sprite), GL },
- { "GL_NV_primitive_restart", o(NV_primitive_restart), GL },
- { "GL_NV_texgen_reflection", o(NV_texgen_reflection), GL },
- { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4), GL },
- { "GL_NV_texture_rectangle", o(NV_texture_rectangle), GL },
- { "GL_NV_vertex_program1_1", o(NV_vertex_program1_1), GL },
- { "GL_NV_vertex_program", o(NV_vertex_program), GL },
- { "GL_S3_s3tc", o(S3_s3tc), GL },
- { "GL_SGIS_generate_mipmap", o(SGIS_generate_mipmap), GL },
- { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp), GL },
- { "GL_SGIS_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL },
- { "GL_SGIS_texture_lod", o(SGIS_texture_lod), GL },
- { "GL_SGI_texture_color_table", o(SGI_texture_color_table), GL },
- { "GL_SUN_multi_draw_arrays", o(EXT_multi_draw_arrays), GL },
-
- { 0, 0, 0 },
-};
-
-
-/**
- * Given an extension name, lookup up the corresponding member of struct
- * gl_extensions and return that member's offset (in bytes). If the name is
- * not found in the \c extension_table, return 0.
- *
- * \param name Name of extension.
- * \return Offset of member in struct gl_extensions.
- */
-static size_t
-name_to_offset(const char* name)
-{
- const struct extension *i;
-
- if (name == 0)
- return 0;
-
- for (i = extension_table; i->name != 0; ++i) {
- if (strcmp(name, i->name) == 0)
- return i->offset;
- }
-
- return 0;
-}
-
-
-/**
- * \brief Extensions enabled by default.
- *
- * These extensions are enabled by _mesa_init_extensions().
- *
- * XXX: Should these defaults also apply to GLES?
- */
-static const size_t default_extensions[] = {
- o(ARB_copy_buffer),
- o(ARB_draw_buffers),
- o(ARB_multisample),
- o(ARB_texture_compression),
- o(ARB_transpose_matrix),
- o(ARB_vertex_buffer_object),
- o(ARB_window_pos),
-
- o(EXT_abgr),
- o(EXT_bgra),
- o(EXT_compiled_vertex_array),
- o(EXT_copy_texture),
- o(EXT_draw_range_elements),
- o(EXT_multi_draw_arrays),
- o(EXT_packed_pixels),
- o(EXT_polygon_offset),
- o(EXT_rescale_normal),
- o(EXT_separate_specular_color),
- o(EXT_subtexture),
- o(EXT_texture),
- o(EXT_texture3D),
- o(EXT_texture_object),
- o(EXT_vertex_array),
-
- o(OES_read_format),
-
- /* Vendor Extensions */
- o(APPLE_packed_pixels),
- o(IBM_multimode_draw_arrays),
- o(IBM_rasterpos_clip),
- o(NV_light_max_exponent),
- o(NV_texgen_reflection),
- o(SGIS_generate_mipmap),
- o(SGIS_texture_edge_clamp),
- o(SGIS_texture_lod),
-
- 0,
-};
-
-
-/**
- * Enable all extensions suitable for a software-only renderer.
- * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc.
- */
-void
-_mesa_enable_sw_extensions(struct gl_context *ctx)
-{
- /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/
- ctx->Extensions.ARB_depth_clamp = GL_TRUE;
- ctx->Extensions.ARB_depth_texture = GL_TRUE;
- /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
- ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE;
- ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE;
- ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE;
-#if FEATURE_ARB_fragment_program
- ctx->Extensions.ARB_fragment_program = GL_TRUE;
- ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE;
-#endif
-#if FEATURE_ARB_fragment_shader
- ctx->Extensions.ARB_fragment_shader = GL_TRUE;
-#endif
-#if FEATURE_ARB_framebuffer_object
- ctx->Extensions.ARB_framebuffer_object = GL_TRUE;
-#endif
-#if FEATURE_ARB_geometry_shader4 && 0
- /* XXX re-enable when GLSL compiler again supports geometry shaders */
- ctx->Extensions.ARB_geometry_shader4 = GL_TRUE;
-#endif
- ctx->Extensions.ARB_half_float_pixel = GL_TRUE;
- ctx->Extensions.ARB_half_float_vertex = GL_TRUE;
- ctx->Extensions.ARB_map_buffer_range = GL_TRUE;
- ctx->Extensions.ARB_multitexture = GL_TRUE;
-#if FEATURE_queryobj
- ctx->Extensions.ARB_occlusion_query = GL_TRUE;
- ctx->Extensions.ARB_occlusion_query2 = GL_TRUE;
-#endif
- ctx->Extensions.ARB_point_sprite = GL_TRUE;
-#if FEATURE_ARB_shader_objects
- ctx->Extensions.ARB_shader_objects = GL_TRUE;
- ctx->Extensions.EXT_separate_shader_objects = GL_TRUE;
-#endif
-#if FEATURE_ARB_shading_language_100
- ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
-#endif
- ctx->Extensions.ARB_shadow = GL_TRUE;
- ctx->Extensions.ARB_shadow_ambient = GL_TRUE;
- ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
- ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
- ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
- ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
- ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
- /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/
- ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
- ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
- ctx->Extensions.ARB_texture_rg = GL_TRUE;
- ctx->Extensions.ARB_vertex_array_object = GL_TRUE;
-#if FEATURE_ARB_vertex_program
- ctx->Extensions.ARB_vertex_program = GL_TRUE;
-#endif
-#if FEATURE_ARB_vertex_shader
- ctx->Extensions.ARB_vertex_shader = GL_TRUE;
-#endif
-#if FEATURE_ARB_vertex_buffer_object
- /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
-#endif
-#if FEATURE_ARB_sync
- ctx->Extensions.ARB_sync = GL_TRUE;
-#endif
- ctx->Extensions.APPLE_vertex_array_object = GL_TRUE;
-#if FEATURE_APPLE_object_purgeable
- ctx->Extensions.APPLE_object_purgeable = GL_TRUE;
-#endif
- ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE;
-#if FEATURE_ATI_fragment_shader
- ctx->Extensions.ATI_fragment_shader = GL_TRUE;
-#endif
- ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE;
- ctx->Extensions.ATI_texture_mirror_once = GL_TRUE;
- ctx->Extensions.ATI_separate_stencil = GL_TRUE;
- ctx->Extensions.EXT_blend_color = GL_TRUE;
- ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
- ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
- ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
- ctx->Extensions.EXT_blend_minmax = GL_TRUE;
- ctx->Extensions.EXT_blend_subtract = GL_TRUE;
- ctx->Extensions.EXT_depth_bounds_test = GL_TRUE;
- ctx->Extensions.EXT_draw_buffers2 = GL_TRUE;
- ctx->Extensions.EXT_fog_coord = GL_TRUE;
-#if FEATURE_EXT_framebuffer_object
- ctx->Extensions.EXT_framebuffer_object = GL_TRUE;
-#endif
-#if FEATURE_EXT_framebuffer_blit
- ctx->Extensions.EXT_framebuffer_blit = GL_TRUE;
-#endif
-#if FEATURE_ARB_framebuffer_object
- ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
-#endif
- /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
- ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE;
- ctx->Extensions.EXT_paletted_texture = GL_TRUE;
-#if FEATURE_EXT_pixel_buffer_object
- ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
-#endif
- ctx->Extensions.EXT_point_parameters = GL_TRUE;
- ctx->Extensions.EXT_provoking_vertex = GL_TRUE;
- ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
- ctx->Extensions.EXT_secondary_color = GL_TRUE;
- ctx->Extensions.EXT_shared_texture_palette = GL_TRUE;
- ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
- ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
- ctx->Extensions.EXT_texture_array = GL_TRUE;
- ctx->Extensions.EXT_texture_env_add = GL_TRUE;
- ctx->Extensions.EXT_texture_env_combine = GL_TRUE;
- ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE;
- ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE;
- ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
-#if FEATURE_EXT_texture_sRGB
- ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
-#endif
- ctx->Extensions.EXT_texture_swizzle = GL_TRUE;
-#if FEATURE_EXT_transform_feedback
- /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/
-#endif
- ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE;
- /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/
- ctx->Extensions.MESA_pack_invert = GL_TRUE;
- ctx->Extensions.MESA_resize_buffers = GL_TRUE;
- ctx->Extensions.MESA_texture_array = GL_TRUE;
- ctx->Extensions.MESA_ycbcr_texture = GL_TRUE;
- ctx->Extensions.NV_blend_square = GL_TRUE;
- ctx->Extensions.NV_conditional_render = GL_TRUE;
- /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/
- ctx->Extensions.NV_point_sprite = GL_TRUE;
- ctx->Extensions.NV_texture_env_combine4 = GL_TRUE;
- ctx->Extensions.NV_texture_rectangle = GL_TRUE;
- /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/
-#if FEATURE_NV_vertex_program
- ctx->Extensions.NV_vertex_program = GL_TRUE;
- ctx->Extensions.NV_vertex_program1_1 = GL_TRUE;
-#endif
-#if FEATURE_NV_fragment_program
- ctx->Extensions.NV_fragment_program = GL_TRUE;
-#endif
-#if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program
- ctx->Extensions.NV_fragment_program_option = GL_TRUE;
-#endif
- ctx->Extensions.SGI_texture_color_table = GL_TRUE;
- /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
- ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE;
-#if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program
- ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE;
-#endif
-#if FEATURE_texture_fxt1
- _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
-#endif
-#if FEATURE_texture_s3tc
- if (ctx->Mesa_DXTn) {
- _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
- _mesa_enable_extension(ctx, "GL_S3_s3tc");
- }
-#endif
-}
-
-
-/**
- * Enable common EXT extensions in the ARB_imaging subset.
- */
-void
-_mesa_enable_imaging_extensions(struct gl_context *ctx)
-{
- ctx->Extensions.EXT_blend_color = GL_TRUE;
- ctx->Extensions.EXT_blend_logic_op = GL_TRUE;
- ctx->Extensions.EXT_blend_minmax = GL_TRUE;
- ctx->Extensions.EXT_blend_subtract = GL_TRUE;
-}
-
-
-
-/**
- * Enable all OpenGL 1.3 features and extensions.
- * A convenience function to be called by drivers.
- */
-void
-_mesa_enable_1_3_extensions(struct gl_context *ctx)
-{
- /*ctx->Extensions.ARB_multisample = GL_TRUE;*/
- ctx->Extensions.ARB_multitexture = GL_TRUE;
- ctx->Extensions.ARB_texture_border_clamp = GL_TRUE;
- /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/
- ctx->Extensions.ARB_texture_cube_map = GL_TRUE;
- ctx->Extensions.ARB_texture_env_combine = GL_TRUE;
- ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE;
- ctx->Extensions.EXT_texture_env_add = GL_TRUE;
- /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/
-}
-
-
-
-/**
- * Enable all OpenGL 1.4 features and extensions.
- * A convenience function to be called by drivers.
- */
-void
-_mesa_enable_1_4_extensions(struct gl_context *ctx)
-{
- ctx->Extensions.ARB_depth_texture = GL_TRUE;
- ctx->Extensions.ARB_shadow = GL_TRUE;
- ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE;
- ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE;
- ctx->Extensions.ARB_window_pos = GL_TRUE;
- ctx->Extensions.EXT_blend_color = GL_TRUE;
- ctx->Extensions.EXT_blend_func_separate = GL_TRUE;
- ctx->Extensions.EXT_blend_minmax = GL_TRUE;
- ctx->Extensions.EXT_blend_subtract = GL_TRUE;
- ctx->Extensions.EXT_fog_coord = GL_TRUE;
- /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/
- ctx->Extensions.EXT_point_parameters = GL_TRUE;
- ctx->Extensions.EXT_secondary_color = GL_TRUE;
- ctx->Extensions.EXT_stencil_wrap = GL_TRUE;
- ctx->Extensions.EXT_texture_lod_bias = GL_TRUE;
- /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/
-}
-
-
-/**
- * Enable all OpenGL 1.5 features and extensions.
- * A convenience function to be called by drivers.
- */
-void
-_mesa_enable_1_5_extensions(struct gl_context *ctx)
-{
- ctx->Extensions.ARB_occlusion_query = GL_TRUE;
- /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/
- ctx->Extensions.EXT_shadow_funcs = GL_TRUE;
-}
-
-
-/**
- * Enable all OpenGL 2.0 features and extensions.
- * A convenience function to be called by drivers.
- */
-void
-_mesa_enable_2_0_extensions(struct gl_context *ctx)
-{
- /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/
-#if FEATURE_ARB_fragment_shader
- ctx->Extensions.ARB_fragment_shader = GL_TRUE;
-#endif
- ctx->Extensions.ARB_point_sprite = GL_TRUE;
- ctx->Extensions.EXT_blend_equation_separate = GL_TRUE;
- ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE;
-#if FEATURE_ARB_shader_objects
- ctx->Extensions.ARB_shader_objects = GL_TRUE;
-#endif
-#if FEATURE_ARB_shading_language_100
- ctx->Extensions.ARB_shading_language_100 = GL_TRUE;
-#endif
- ctx->Extensions.EXT_stencil_two_side = GL_TRUE;
-#if FEATURE_ARB_vertex_shader
- ctx->Extensions.ARB_vertex_shader = GL_TRUE;
-#endif
-}
-
-
-/**
- * Enable all OpenGL 2.1 features and extensions.
- * A convenience function to be called by drivers.
- */
-void
-_mesa_enable_2_1_extensions(struct gl_context *ctx)
-{
-#if FEATURE_EXT_pixel_buffer_object
- ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE;
-#endif
-#if FEATURE_EXT_texture_sRGB
- ctx->Extensions.EXT_texture_sRGB = GL_TRUE;
-#endif
-}
-
-
-/**
- * Either enable or disable the named extension.
- * \return GL_TRUE for success, GL_FALSE if invalid extension name
- */
-static GLboolean
-set_extension( struct gl_context *ctx, const char *name, GLboolean state )
-{
- size_t offset;
-
- if (ctx->Extensions.String) {
- /* The string was already queried - can't change it now! */
- _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name);
- return GL_FALSE;
- }
-
- offset = name_to_offset(name);
- if (offset == 0) {
- _mesa_problem(ctx, "Trying to enable/disable unknown extension %s",
- name);
- return GL_FALSE;
- } else if (offset == o(dummy_true) && state == GL_FALSE) {
- _mesa_problem(ctx, "Trying to disable a permanently enabled extension: "
- "%s", name);
- return GL_FALSE;
- } else {
- GLboolean *base = (GLboolean *) &ctx->Extensions;
- base[offset] = state;
- return GL_TRUE;
- }
-}
-
-
-/**
- * Enable the named extension.
- * Typically called by drivers.
- */
-void
-_mesa_enable_extension( struct gl_context *ctx, const char *name )
-{
- if (!set_extension(ctx, name, GL_TRUE))
- _mesa_problem(ctx, "Trying to enable unknown extension: %s", name);
-}
-
-
-/**
- * Disable the named extension.
- * XXX is this really needed???
- */
-void
-_mesa_disable_extension( struct gl_context *ctx, const char *name )
-{
- if (!set_extension(ctx, name, GL_FALSE))
- _mesa_problem(ctx, "Trying to disable unknown extension: %s", name);
-}
-
-
-/**
- * Test if the named extension is enabled in this context.
- */
-GLboolean
-_mesa_extension_is_enabled( struct gl_context *ctx, const char *name )
-{
- size_t offset;
- GLboolean *base;
-
- if (name == 0)
- return GL_FALSE;
-
- offset = name_to_offset(name);
- if (offset == 0)
- return GL_FALSE;
- base = (GLboolean *) &ctx->Extensions;
- return base[offset];
-}
-
-
-/**
- * Append string 'b' onto string 'a'. Free 'a' and return new string.
- */
-static char *
-append(const char *a, const char *b)
-{
- const GLuint aLen = a ? strlen(a) : 0;
- const GLuint bLen = b ? strlen(b) : 0;
- char *s = calloc(1, aLen + bLen + 1);
- if (s) {
- if (a)
- memcpy(s, a, aLen);
- if (b)
- memcpy(s + aLen, b, bLen);
- s[aLen + bLen] = '\0';
- }
- if (a)
- free((void *) a);
- return s;
-}
-
-
-/**
- * Check the MESA_EXTENSION_OVERRIDE env var.
- * For extension names that are recognized, turn them on. For extension
- * names that are recognized and prefixed with '-', turn them off.
- * Return a string of the unknown/leftover names.
- *
- * Returnd string needs to be freed.
- */
-static char *
-get_extension_override( struct gl_context *ctx )
-{
- const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE");
- char *extraExt = NULL;
- char ext[1000];
- GLuint extLen = 0;
- GLuint i;
- GLboolean disableExt = GL_FALSE;
-
- if (!envExt)
- return NULL;
-
- for (i = 0; ; i++) {
- if (envExt[i] == '\0' || envExt[i] == ' ') {
- /* terminate/process 'ext' if extLen > 0 */
- if (extLen > 0) {
- assert(extLen < sizeof(ext));
- /* enable extension named by 'ext' */
- ext[extLen] = 0;
- if (!set_extension(ctx, ext, !disableExt)) {
- /* unknown extension name, append it to extraExt */
- if (extraExt) {
- extraExt = append(extraExt, " ");
- }
- extraExt = append(extraExt, ext);
- }
- extLen = 0;
- disableExt = GL_FALSE;
- }
- if (envExt[i] == '\0')
- break;
- }
- else if (envExt[i] == '-') {
- disableExt = GL_TRUE;
- }
- else {
- /* accumulate this non-space character */
- ext[extLen++] = envExt[i];
- }
- }
-
- return extraExt;
-}
-
-
-/**
- * \brief Initialize extension tables and enable default extensions.
- *
- * This should be called during context initialization.
- * Note: Sets gl_extensions.dummy_true to true.
- */
-void
-_mesa_init_extensions( struct gl_context *ctx )
-{
- GLboolean *base = (GLboolean *) &ctx->Extensions;
- GLboolean *sentinel = base + o(extension_sentinel);
- GLboolean *i;
- const size_t *j;
-
- /* First, turn all extensions off. */
- for (i = base; i != sentinel; ++i)
- *i = GL_FALSE;
-
- /* Then, selectively turn default extensions on. */
- ctx->Extensions.dummy_true = GL_TRUE;
- for (j = default_extensions; *j != 0; ++j)
- base[*j] = GL_TRUE;
-}
-
-
-/**
- * Construct the GL_EXTENSIONS string. Called the first time that
- * glGetString(GL_EXTENSIONS) is called.
- */
-GLubyte*
-_mesa_make_extension_string(struct gl_context *ctx)
-{
- /* The extension string. */
- char *exts = 0;
- /* Length of extension string. */
- size_t length = 0;
- /* String of extra extensions. */
- char *extra_extensions = get_extension_override(ctx);
- GLboolean *base = (GLboolean *) &ctx->Extensions;
- const struct extension *i;
-
- /* Compute length of the extension string. */
- for (i = extension_table; i->name != 0; ++i) {
- if (base[i->offset] && (i->api_set & (1 << ctx->API))) {
- length += strlen(i->name) + 1; /* +1 for space */
- }
- }
- if (extra_extensions != NULL)
- length += 1 + strlen(extra_extensions); /* +1 for space */
-
- exts = (char *) calloc(length + 1, sizeof(char));
- if (exts == NULL) {
- free(extra_extensions);
- return NULL;
- }
-
- /* Build the extension string.*/
- for (i = extension_table; i->name != 0; ++i) {
- if (base[i->offset] && (i->api_set & (1 << ctx->API))) {
- strcat(exts, i->name);
- strcat(exts, " ");
- }
- }
- if (extra_extensions != 0) {
- strcat(exts, extra_extensions);
- free(extra_extensions);
- }
-
- return (GLubyte *) exts;
-}
-
-/**
- * Return number of enabled extensions.
- */
-GLuint
-_mesa_get_extension_count(struct gl_context *ctx)
-{
- GLboolean *base;
- const struct extension *i;
-
- /* only count once */
- if (ctx->Extensions.Count != 0)
- return ctx->Extensions.Count;
-
- base = (GLboolean *) &ctx->Extensions;
- for (i = extension_table; i->name != 0; ++i) {
- if (base[i->offset]) {
- ctx->Extensions.Count++;
- }
- }
- return ctx->Extensions.Count;
-}
-
-/**
- * Return name of i-th enabled extension
- */
-const GLubyte *
-_mesa_get_enabled_extension(struct gl_context *ctx, GLuint index)
-{
- const GLboolean *base;
- size_t n;
- const struct extension *i;
-
- if (index < 0)
- return NULL;
-
- base = (GLboolean*) &ctx->Extensions;
- n = 0;
- for (i = extension_table; i->name != 0; ++i) {
- if (n == index && base[i->offset]) {
- return (GLubyte*) i->name;
- } else if (base[i->offset]) {
- ++n;
- }
- }
-
- return NULL;
-}
+/* + * Mesa 3-D graphics library + * Version: 7.6 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/** + * \file + * \brief Extension handling + */ + + +#include "glheader.h" +#include "imports.h" +#include "context.h" +#include "extensions.h" +#include "mfeatures.h" +#include "mtypes.h" + +enum { + DISABLE = 0, + GL = 1 << API_OPENGL, + ES1 = 1 << API_OPENGLES, + ES2 = 1 << API_OPENGLES2, +}; + +/** + * \brief An element of the \c extension_table. + */ +struct extension { + /** Name of extension, such as "GL_ARB_depth_clamp". */ + const char *name; + + /** Offset (in bytes) of the corresponding member in struct gl_extensions. */ + size_t offset; + + /** Set of API's in which the extension exists, as a bitset. */ + uint8_t api_set; +}; + + +/** + * Given a member \c x of struct gl_extensions, return offset of + * \c x in bytes. + */ +#define o(x) offsetof(struct gl_extensions, x) + + +/** + * \brief Table of supported OpenGL extensions for all API's. + * + * Note: The GL_MESAX_* extensions are placeholders for future ARB extensions. + */ +static const struct extension extension_table[] = { + /* ARB Extensions */ + { "GL_ARB_blend_func_extended", o(ARB_blend_func_extended), GL }, + { "GL_ARB_copy_buffer", o(ARB_copy_buffer), GL }, + { "GL_ARB_depth_buffer_float", o(ARB_depth_buffer_float), GL }, + { "GL_ARB_depth_clamp", o(ARB_depth_clamp), GL }, + { "GL_ARB_depth_texture", o(ARB_depth_texture), GL }, + { "GL_ARB_draw_buffers", o(ARB_draw_buffers), GL }, + { "GL_ARB_draw_elements_base_vertex", o(ARB_draw_elements_base_vertex), GL }, + { "GL_ARB_draw_instanced", o(ARB_draw_instanced), GL }, + { "GL_ARB_explicit_attrib_location", o(ARB_explicit_attrib_location), GL }, + { "GL_ARB_fragment_coord_conventions", o(ARB_fragment_coord_conventions), GL }, + { "GL_ARB_fragment_program", o(ARB_fragment_program), GL }, + { "GL_ARB_fragment_program_shadow", o(ARB_fragment_program_shadow), GL }, + { "GL_ARB_fragment_shader", o(ARB_fragment_shader), GL }, + { "GL_ARB_framebuffer_object", o(ARB_framebuffer_object), GL }, + { "GL_ARB_half_float_pixel", o(ARB_half_float_pixel), GL }, + { "GL_ARB_half_float_vertex", o(ARB_half_float_vertex), GL }, + { "GL_ARB_instanced_arrays", o(ARB_instanced_arrays), GL }, + { "GL_ARB_map_buffer_range", o(ARB_map_buffer_range), GL }, + { "GL_ARB_multisample", o(ARB_multisample), GL }, + { "GL_ARB_multitexture", o(ARB_multitexture), GL }, + { "GL_ARB_occlusion_query2", o(ARB_occlusion_query2), GL }, + { "GL_ARB_occlusion_query", o(ARB_occlusion_query), GL }, + { "GL_ARB_pixel_buffer_object", o(EXT_pixel_buffer_object), GL }, + { "GL_ARB_point_parameters", o(EXT_point_parameters), GL }, + { "GL_ARB_point_sprite", o(ARB_point_sprite), GL }, + { "GL_ARB_provoking_vertex", o(EXT_provoking_vertex), GL }, + { "GL_ARB_sampler_objects", o(ARB_sampler_objects), GL }, + { "GL_ARB_seamless_cube_map", o(ARB_seamless_cube_map), GL }, + { "GL_ARB_shader_objects", o(ARB_shader_objects), GL }, + { "GL_ARB_shader_stencil_export", o(ARB_shader_stencil_export), GL }, + { "GL_ARB_shading_language_100", o(ARB_shading_language_100), GL }, + { "GL_ARB_shadow_ambient", o(ARB_shadow_ambient), GL }, + { "GL_ARB_shadow", o(ARB_shadow), GL }, + { "GL_ARB_sync", o(ARB_sync), GL }, + { "GL_ARB_texture_border_clamp", o(ARB_texture_border_clamp), GL }, + { "GL_ARB_texture_buffer_object", o(ARB_texture_buffer_object), GL }, + { "GL_ARB_texture_compression", o(ARB_texture_compression), GL }, + { "GL_ARB_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL }, + { "GL_ARB_texture_cube_map", o(ARB_texture_cube_map), GL }, + { "GL_ARB_texture_env_add", o(EXT_texture_env_add), GL }, + { "GL_ARB_texture_env_combine", o(ARB_texture_env_combine), GL }, + { "GL_ARB_texture_env_crossbar", o(ARB_texture_env_crossbar), GL }, + { "GL_ARB_texture_env_dot3", o(ARB_texture_env_dot3), GL }, + { "GL_ARB_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL }, + { "GL_ARB_texture_multisample", o(ARB_texture_multisample), GL }, + { "GL_ARB_texture_non_power_of_two", o(ARB_texture_non_power_of_two), GL }, + { "GL_ARB_texture_rectangle", o(NV_texture_rectangle), GL }, + { "GL_ARB_texture_rgb10_a2ui", o(ARB_texture_rgb10_a2ui), GL }, + { "GL_ARB_texture_rg", o(ARB_texture_rg), GL }, + { "GL_ARB_texture_swizzle", o(EXT_texture_swizzle), GL }, + { "GL_ARB_transform_feedback2", o(ARB_transform_feedback2), GL }, + { "GL_ARB_transpose_matrix", o(ARB_transpose_matrix), GL }, + { "GL_ARB_uniform_buffer_object", o(ARB_uniform_buffer_object), GL }, + { "GL_ARB_vertex_array_bgra", o(EXT_vertex_array_bgra), GL }, + { "GL_ARB_vertex_array_object", o(ARB_vertex_array_object), GL }, + { "GL_ARB_vertex_buffer_object", o(ARB_vertex_buffer_object), GL }, + { "GL_ARB_vertex_program", o(ARB_vertex_program), GL }, + { "GL_ARB_vertex_shader", o(ARB_vertex_shader), GL }, + { "GL_ARB_vertex_type_2_10_10_10_rev", o(ARB_vertex_type_2_10_10_10_rev), GL }, + { "GL_ARB_window_pos", o(ARB_window_pos), GL }, + + /* EXT extensions */ + { "GL_EXT_abgr", o(EXT_abgr), GL }, + { "GL_EXT_bgra", o(EXT_bgra), GL }, + { "GL_EXT_blend_color", o(EXT_blend_color), GL }, + { "GL_EXT_blend_equation_separate", o(EXT_blend_equation_separate), GL }, + { "GL_EXT_blend_func_separate", o(EXT_blend_func_separate), GL }, + { "GL_EXT_blend_logic_op", o(EXT_blend_logic_op), GL }, + { "GL_EXT_blend_minmax", o(EXT_blend_minmax), GL | ES1 | ES2 }, + { "GL_EXT_blend_subtract", o(EXT_blend_subtract), GL }, + { "GL_EXT_clip_volume_hint", o(EXT_clip_volume_hint), GL }, + { "GL_EXT_compiled_vertex_array", o(EXT_compiled_vertex_array), GL }, + { "GL_EXT_copy_texture", o(EXT_copy_texture), GL }, + { "GL_EXT_depth_bounds_test", o(EXT_depth_bounds_test), GL }, + { "GL_EXT_draw_buffers2", o(EXT_draw_buffers2), GL }, + { "GL_EXT_draw_instanced", o(ARB_draw_instanced), GL }, + { "GL_EXT_draw_range_elements", o(EXT_draw_range_elements), GL }, + { "GL_EXT_fog_coord", o(EXT_fog_coord), GL }, + { "GL_EXT_framebuffer_blit", o(EXT_framebuffer_blit), GL }, + { "GL_EXT_framebuffer_multisample", o(EXT_framebuffer_multisample), GL }, + { "GL_EXT_framebuffer_object", o(EXT_framebuffer_object), GL }, + { "GL_EXT_framebuffer_sRGB", o(EXT_framebuffer_sRGB), GL }, + { "GL_EXT_gpu_program_parameters", o(EXT_gpu_program_parameters), GL }, + { "GL_EXT_gpu_shader4", o(EXT_gpu_shader4), GL }, + { "GL_EXT_multi_draw_arrays", o(EXT_multi_draw_arrays), GL | ES1 | ES2 }, + { "GL_EXT_packed_depth_stencil", o(EXT_packed_depth_stencil), GL }, + { "GL_EXT_packed_float", o(EXT_packed_float), GL }, + { "GL_EXT_packed_pixels", o(EXT_packed_pixels), GL }, + { "GL_EXT_paletted_texture", o(EXT_paletted_texture), GL }, + { "GL_EXT_pixel_buffer_object", o(EXT_pixel_buffer_object), GL }, + { "GL_EXT_point_parameters", o(EXT_point_parameters), GL }, + { "GL_EXT_polygon_offset", o(EXT_polygon_offset), GL }, + { "GL_EXT_provoking_vertex", o(EXT_provoking_vertex), GL }, + { "GL_EXT_rescale_normal", o(EXT_rescale_normal), GL }, + { "GL_EXT_secondary_color", o(EXT_secondary_color), GL }, + { "GL_EXT_separate_shader_objects", o(EXT_separate_shader_objects), GL }, + { "GL_EXT_separate_specular_color", o(EXT_separate_specular_color), GL }, + { "GL_EXT_shadow_funcs", o(EXT_shadow_funcs), GL }, + { "GL_EXT_shared_texture_palette", o(EXT_shared_texture_palette), GL }, + { "GL_EXT_stencil_two_side", o(EXT_stencil_two_side), GL }, + { "GL_EXT_stencil_wrap", o(EXT_stencil_wrap), GL }, + { "GL_EXT_subtexture", o(EXT_subtexture), GL }, + { "GL_EXT_texture3D", o(EXT_texture3D), GL }, + { "GL_EXT_texture_array", o(EXT_texture_array), GL }, + { "GL_EXT_texture_compression_dxt1", o(EXT_texture_compression_s3tc), GL | ES1 | ES2 }, + { "GL_EXT_texture_compression_rgtc", o(ARB_texture_compression_rgtc), GL }, + { "GL_EXT_texture_compression_s3tc", o(EXT_texture_compression_s3tc), GL }, + { "GL_EXT_texture_cube_map", o(ARB_texture_cube_map), GL }, + { "GL_EXT_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL }, + { "GL_EXT_texture_env_add", o(EXT_texture_env_add), GL }, + { "GL_EXT_texture_env_combine", o(EXT_texture_env_combine), GL }, + { "GL_EXT_texture_env_dot3", o(EXT_texture_env_dot3), GL }, + { "GL_EXT_texture_filter_anisotropic", o(EXT_texture_filter_anisotropic), GL | ES1 | ES2 }, + { "GL_EXT_texture_format_BGRA8888", o(EXT_texture_format_BGRA8888), ES1 | ES2 }, + { "GL_EXT_texture_integer", o(EXT_texture_integer), GL }, + { "GL_EXT_texture_lod_bias", o(EXT_texture_lod_bias), GL | ES1 }, + { "GL_EXT_texture_mirror_clamp", o(EXT_texture_mirror_clamp), GL }, + { "GL_EXT_texture_object", o(EXT_texture_object), GL }, + { "GL_EXT_texture", o(EXT_texture), GL }, + { "GL_EXT_texture_rectangle", o(NV_texture_rectangle), GL }, + { "GL_EXT_texture_shared_exponent", o(EXT_texture_shared_exponent), GL }, + { "GL_EXT_texture_sRGB", o(EXT_texture_sRGB), GL }, + { "GL_EXT_texture_swizzle", o(EXT_texture_swizzle), GL }, + { "GL_EXT_texture_type_2_10_10_10_REV", o(dummy_true), ES2 }, + { "GL_EXT_timer_query", o(EXT_timer_query), GL }, + { "GL_EXT_transform_feedback", o(EXT_transform_feedback), GL }, + { "GL_EXT_vertex_array_bgra", o(EXT_vertex_array_bgra), GL }, + { "GL_EXT_vertex_array", o(EXT_vertex_array), GL }, + { "GL_EXT_vertex_array_set", o(EXT_vertex_array_set), GL }, + + /* OES extensions */ + { "GL_OES_blend_equation_separate", o(EXT_blend_equation_separate), ES1 }, + { "GL_OES_blend_func_separate", o(EXT_blend_func_separate), ES1 }, + { "GL_OES_blend_subtract", o(EXT_blend_subtract), ES1 }, + { "GL_OES_byte_coordinates", o(dummy_true), ES1 }, + { "GL_OES_compressed_paletted_texture", o(dummy_false), DISABLE }, + { "GL_OES_depth24", o(EXT_framebuffer_object), ES1 | ES2 }, + { "GL_OES_depth32", o(dummy_false), DISABLE }, + { "GL_OES_depth_texture", o(ARB_depth_texture), ES2 }, +#if FEATURE_OES_draw_texture + { "GL_OES_draw_texture", o(OES_draw_texture), ES1 | ES2 }, +#endif +#if FEATURE_OES_EGL_image + /* FIXME: Mesa expects GL_OES_EGL_image to be available in OpenGL contexts. */ + { "GL_OES_EGL_image", o(OES_EGL_image), GL | ES1 | ES2 }, +#endif + { "GL_OES_element_index_uint", o(EXT_vertex_array), ES1 | ES2 }, + { "GL_OES_fbo_render_mipmap", o(EXT_framebuffer_object), ES1 | ES2 }, + { "GL_OES_fixed_point", o(dummy_true), ES1 }, + { "GL_OES_framebuffer_object", o(EXT_framebuffer_object), ES1 }, + { "GL_OES_mapbuffer", o(ARB_vertex_buffer_object), ES1 | ES2 }, + { "GL_OES_matrix_get", o(dummy_true), ES1 }, + { "GL_OES_packed_depth_stencil", o(EXT_packed_depth_stencil), ES1 | ES2 }, + { "GL_OES_point_size_array", o(dummy_true), ES1 }, + { "GL_OES_point_sprite", o(ARB_point_sprite), ES1 }, + { "GL_OES_query_matrix", o(dummy_true), ES1 }, + { "GL_OES_read_format", o(OES_read_format), GL | ES1 }, + { "GL_OES_rgb8_rgba8", o(EXT_framebuffer_object), ES1 | ES2 }, + { "GL_OES_single_precision", o(dummy_true), ES1 }, + { "GL_OES_standard_derivatives", o(OES_standard_derivatives), ES2 }, + { "GL_OES_stencil1", o(dummy_false), DISABLE }, + { "GL_OES_stencil4", o(dummy_false), DISABLE }, + { "GL_OES_stencil8", o(EXT_framebuffer_object), ES1 | ES2 }, + { "GL_OES_stencil_wrap", o(EXT_stencil_wrap), ES1 }, + /* GL_OES_texture_3D is disabled due to missing GLSL support. */ + { "GL_OES_texture_3D", o(EXT_texture3D), DISABLE }, + { "GL_OES_texture_cube_map", o(ARB_texture_cube_map), ES1 }, + { "GL_OES_texture_env_crossbar", o(ARB_texture_env_crossbar), ES1 }, + { "GL_OES_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), ES1 }, + { "GL_OES_texture_npot", o(ARB_texture_non_power_of_two), ES2 }, + + /* Vendor extensions */ + { "GL_3DFX_texture_compression_FXT1", o(TDFX_texture_compression_FXT1), GL }, + { "GL_APPLE_client_storage", o(APPLE_client_storage), GL }, + { "GL_APPLE_object_purgeable", o(APPLE_object_purgeable), GL }, + { "GL_APPLE_packed_pixels", o(APPLE_packed_pixels), GL }, + { "GL_APPLE_vertex_array_object", o(APPLE_vertex_array_object), GL }, + { "GL_ATI_blend_equation_separate", o(EXT_blend_equation_separate), GL }, + { "GL_ATI_envmap_bumpmap", o(ATI_envmap_bumpmap), GL }, + { "GL_ATI_fragment_shader", o(ATI_fragment_shader), GL }, + { "GL_ATI_separate_stencil", o(ATI_separate_stencil), GL }, + { "GL_ATI_texture_env_combine3", o(ATI_texture_env_combine3), GL }, + { "GL_ATI_texture_mirror_once", o(ATI_texture_mirror_once), GL }, + { "GL_IBM_multimode_draw_arrays", o(IBM_multimode_draw_arrays), GL }, + { "GL_IBM_rasterpos_clip", o(IBM_rasterpos_clip), GL }, + { "GL_IBM_texture_mirrored_repeat", o(ARB_texture_mirrored_repeat), GL }, + { "GL_INGR_blend_func_separate", o(EXT_blend_func_separate), GL }, + { "GL_MESA_pack_invert", o(MESA_pack_invert), GL }, + { "GL_MESA_resize_buffers", o(MESA_resize_buffers), GL }, + { "GL_MESA_texture_array", o(MESA_texture_array), GL }, + { "GL_MESA_texture_signed_rgba", o(MESA_texture_signed_rgba), GL }, + { "GL_MESA_window_pos", o(ARB_window_pos), GL }, + { "GL_MESAX_texture_float", o(ARB_texture_float), GL }, + { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL }, + { "GL_NV_blend_square", o(NV_blend_square), GL }, + { "GL_NV_conditional_render", o(NV_conditional_render), GL }, + { "GL_NV_depth_clamp", o(ARB_depth_clamp), GL }, + { "GL_NV_fragment_program", o(NV_fragment_program), GL }, + { "GL_NV_fragment_program_option", o(NV_fragment_program_option), GL }, + { "GL_NV_light_max_exponent", o(NV_light_max_exponent), GL }, + { "GL_NV_packed_depth_stencil", o(EXT_packed_depth_stencil), GL }, + { "GL_NV_point_sprite", o(NV_point_sprite), GL }, + { "GL_NV_primitive_restart", o(NV_primitive_restart), GL }, + { "GL_NV_texgen_reflection", o(NV_texgen_reflection), GL }, + { "GL_NV_texture_env_combine4", o(NV_texture_env_combine4), GL }, + { "GL_NV_texture_rectangle", o(NV_texture_rectangle), GL }, + { "GL_NV_vertex_program1_1", o(NV_vertex_program1_1), GL }, + { "GL_NV_vertex_program", o(NV_vertex_program), GL }, + { "GL_S3_s3tc", o(S3_s3tc), GL }, + { "GL_SGIS_generate_mipmap", o(SGIS_generate_mipmap), GL }, + { "GL_SGIS_texture_border_clamp", o(ARB_texture_border_clamp), GL }, + { "GL_SGIS_texture_edge_clamp", o(SGIS_texture_edge_clamp), GL }, + { "GL_SGIS_texture_lod", o(SGIS_texture_lod), GL }, + { "GL_SGI_texture_color_table", o(SGI_texture_color_table), GL }, + { "GL_SUN_multi_draw_arrays", o(EXT_multi_draw_arrays), GL }, + + { 0, 0, 0 }, +}; + + +/** + * Given an extension name, lookup up the corresponding member of struct + * gl_extensions and return that member's offset (in bytes). If the name is + * not found in the \c extension_table, return 0. + * + * \param name Name of extension. + * \return Offset of member in struct gl_extensions. + */ +static size_t +name_to_offset(const char* name) +{ + const struct extension *i; + + if (name == 0) + return 0; + + for (i = extension_table; i->name != 0; ++i) { + if (strcmp(name, i->name) == 0) + return i->offset; + } + + return 0; +} + + +/** + * \brief Extensions enabled by default. + * + * These extensions are enabled by _mesa_init_extensions(). + * + * XXX: Should these defaults also apply to GLES? + */ +static const size_t default_extensions[] = { + o(ARB_copy_buffer), + o(ARB_draw_buffers), + o(ARB_multisample), + o(ARB_texture_compression), + o(ARB_transpose_matrix), + o(ARB_vertex_buffer_object), + o(ARB_window_pos), + + o(EXT_abgr), + o(EXT_bgra), + o(EXT_compiled_vertex_array), + o(EXT_copy_texture), + o(EXT_draw_range_elements), + o(EXT_multi_draw_arrays), + o(EXT_packed_pixels), + o(EXT_polygon_offset), + o(EXT_rescale_normal), + o(EXT_separate_specular_color), + o(EXT_subtexture), + o(EXT_texture), + o(EXT_texture3D), + o(EXT_texture_object), + o(EXT_vertex_array), + + o(OES_read_format), + o(OES_standard_derivatives), + + /* Vendor Extensions */ + o(APPLE_packed_pixels), + o(IBM_multimode_draw_arrays), + o(IBM_rasterpos_clip), + o(NV_light_max_exponent), + o(NV_texgen_reflection), + o(SGIS_generate_mipmap), + o(SGIS_texture_edge_clamp), + o(SGIS_texture_lod), + + 0, +}; + + +/** + * Enable all extensions suitable for a software-only renderer. + * This is a convenience function used by the XMesa, OSMesa, GGI drivers, etc. + */ +void +_mesa_enable_sw_extensions(struct gl_context *ctx) +{ + /*ctx->Extensions.ARB_copy_buffer = GL_TRUE;*/ + ctx->Extensions.ARB_depth_clamp = GL_TRUE; + ctx->Extensions.ARB_depth_texture = GL_TRUE; + /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ + ctx->Extensions.ARB_draw_elements_base_vertex = GL_TRUE; + ctx->Extensions.ARB_explicit_attrib_location = GL_TRUE; + ctx->Extensions.ARB_fragment_coord_conventions = GL_TRUE; +#if FEATURE_ARB_fragment_program + ctx->Extensions.ARB_fragment_program = GL_TRUE; + ctx->Extensions.ARB_fragment_program_shadow = GL_TRUE; +#endif +#if FEATURE_ARB_fragment_shader + ctx->Extensions.ARB_fragment_shader = GL_TRUE; +#endif +#if FEATURE_ARB_framebuffer_object + ctx->Extensions.ARB_framebuffer_object = GL_TRUE; +#endif +#if FEATURE_ARB_geometry_shader4 && 0 + /* XXX re-enable when GLSL compiler again supports geometry shaders */ + ctx->Extensions.ARB_geometry_shader4 = GL_TRUE; +#endif + ctx->Extensions.ARB_half_float_pixel = GL_TRUE; + ctx->Extensions.ARB_half_float_vertex = GL_TRUE; + ctx->Extensions.ARB_map_buffer_range = GL_TRUE; + ctx->Extensions.ARB_multitexture = GL_TRUE; +#if FEATURE_queryobj + ctx->Extensions.ARB_occlusion_query = GL_TRUE; + ctx->Extensions.ARB_occlusion_query2 = GL_TRUE; +#endif + ctx->Extensions.ARB_point_sprite = GL_TRUE; +#if FEATURE_ARB_shader_objects + ctx->Extensions.ARB_shader_objects = GL_TRUE; + ctx->Extensions.EXT_separate_shader_objects = GL_TRUE; +#endif +#if FEATURE_ARB_shading_language_100 + ctx->Extensions.ARB_shading_language_100 = GL_TRUE; +#endif + ctx->Extensions.ARB_shadow = GL_TRUE; + ctx->Extensions.ARB_shadow_ambient = GL_TRUE; + ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; + ctx->Extensions.ARB_texture_cube_map = GL_TRUE; + ctx->Extensions.ARB_texture_env_combine = GL_TRUE; + ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; + ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; + /*ctx->Extensions.ARB_texture_float = GL_TRUE;*/ + ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; + ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; + ctx->Extensions.ARB_texture_rg = GL_TRUE; + ctx->Extensions.ARB_vertex_array_object = GL_TRUE; +#if FEATURE_ARB_vertex_program + ctx->Extensions.ARB_vertex_program = GL_TRUE; +#endif +#if FEATURE_ARB_vertex_shader + ctx->Extensions.ARB_vertex_shader = GL_TRUE; +#endif +#if FEATURE_ARB_vertex_buffer_object + /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ +#endif +#if FEATURE_ARB_sync + ctx->Extensions.ARB_sync = GL_TRUE; +#endif + ctx->Extensions.APPLE_vertex_array_object = GL_TRUE; +#if FEATURE_APPLE_object_purgeable + ctx->Extensions.APPLE_object_purgeable = GL_TRUE; +#endif + ctx->Extensions.ATI_envmap_bumpmap = GL_TRUE; +#if FEATURE_ATI_fragment_shader + ctx->Extensions.ATI_fragment_shader = GL_TRUE; +#endif + ctx->Extensions.ATI_texture_env_combine3 = GL_TRUE; + ctx->Extensions.ATI_texture_mirror_once = GL_TRUE; + ctx->Extensions.ATI_separate_stencil = GL_TRUE; + ctx->Extensions.EXT_blend_color = GL_TRUE; + ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; + ctx->Extensions.EXT_blend_func_separate = GL_TRUE; + ctx->Extensions.EXT_blend_logic_op = GL_TRUE; + ctx->Extensions.EXT_blend_minmax = GL_TRUE; + ctx->Extensions.EXT_blend_subtract = GL_TRUE; + ctx->Extensions.EXT_depth_bounds_test = GL_TRUE; + ctx->Extensions.EXT_draw_buffers2 = GL_TRUE; + ctx->Extensions.EXT_fog_coord = GL_TRUE; +#if FEATURE_EXT_framebuffer_object + ctx->Extensions.EXT_framebuffer_object = GL_TRUE; +#endif +#if FEATURE_EXT_framebuffer_blit + ctx->Extensions.EXT_framebuffer_blit = GL_TRUE; +#endif +#if FEATURE_ARB_framebuffer_object + ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE; +#endif + /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ + ctx->Extensions.EXT_packed_depth_stencil = GL_TRUE; + ctx->Extensions.EXT_paletted_texture = GL_TRUE; +#if FEATURE_EXT_pixel_buffer_object + ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; +#endif + ctx->Extensions.EXT_point_parameters = GL_TRUE; + ctx->Extensions.EXT_provoking_vertex = GL_TRUE; + ctx->Extensions.EXT_shadow_funcs = GL_TRUE; + ctx->Extensions.EXT_secondary_color = GL_TRUE; + ctx->Extensions.EXT_shared_texture_palette = GL_TRUE; + ctx->Extensions.EXT_stencil_wrap = GL_TRUE; + ctx->Extensions.EXT_stencil_two_side = GL_TRUE; + ctx->Extensions.EXT_texture_array = GL_TRUE; + ctx->Extensions.EXT_texture_env_add = GL_TRUE; + ctx->Extensions.EXT_texture_env_combine = GL_TRUE; + ctx->Extensions.EXT_texture_env_dot3 = GL_TRUE; + ctx->Extensions.EXT_texture_mirror_clamp = GL_TRUE; + ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; +#if FEATURE_EXT_texture_sRGB + ctx->Extensions.EXT_texture_sRGB = GL_TRUE; +#endif + ctx->Extensions.EXT_texture_swizzle = GL_TRUE; +#if FEATURE_EXT_transform_feedback + /*ctx->Extensions.EXT_transform_feedback = GL_TRUE;*/ +#endif + ctx->Extensions.EXT_vertex_array_bgra = GL_TRUE; + /*ctx->Extensions.IBM_multimode_draw_arrays = GL_TRUE;*/ + ctx->Extensions.MESA_pack_invert = GL_TRUE; + ctx->Extensions.MESA_resize_buffers = GL_TRUE; + ctx->Extensions.MESA_texture_array = GL_TRUE; + ctx->Extensions.MESA_ycbcr_texture = GL_TRUE; + ctx->Extensions.NV_blend_square = GL_TRUE; + ctx->Extensions.NV_conditional_render = GL_TRUE; + /*ctx->Extensions.NV_light_max_exponent = GL_TRUE;*/ + ctx->Extensions.NV_point_sprite = GL_TRUE; + ctx->Extensions.NV_texture_env_combine4 = GL_TRUE; + ctx->Extensions.NV_texture_rectangle = GL_TRUE; + /*ctx->Extensions.NV_texgen_reflection = GL_TRUE;*/ +#if FEATURE_NV_vertex_program + ctx->Extensions.NV_vertex_program = GL_TRUE; + ctx->Extensions.NV_vertex_program1_1 = GL_TRUE; +#endif +#if FEATURE_NV_fragment_program + ctx->Extensions.NV_fragment_program = GL_TRUE; +#endif +#if FEATURE_NV_fragment_program && FEATURE_ARB_fragment_program + ctx->Extensions.NV_fragment_program_option = GL_TRUE; +#endif + ctx->Extensions.SGI_texture_color_table = GL_TRUE; + /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/ + ctx->Extensions.SGIS_texture_edge_clamp = GL_TRUE; +#if FEATURE_ARB_vertex_program || FEATURE_ARB_fragment_program + ctx->Extensions.EXT_gpu_program_parameters = GL_TRUE; +#endif +#if FEATURE_texture_fxt1 + _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1"); +#endif +#if FEATURE_texture_s3tc + if (ctx->Mesa_DXTn) { + _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc"); + _mesa_enable_extension(ctx, "GL_S3_s3tc"); + } +#endif +} + + +/** + * Enable common EXT extensions in the ARB_imaging subset. + */ +void +_mesa_enable_imaging_extensions(struct gl_context *ctx) +{ + ctx->Extensions.EXT_blend_color = GL_TRUE; + ctx->Extensions.EXT_blend_logic_op = GL_TRUE; + ctx->Extensions.EXT_blend_minmax = GL_TRUE; + ctx->Extensions.EXT_blend_subtract = GL_TRUE; +} + + + +/** + * Enable all OpenGL 1.3 features and extensions. + * A convenience function to be called by drivers. + */ +void +_mesa_enable_1_3_extensions(struct gl_context *ctx) +{ + /*ctx->Extensions.ARB_multisample = GL_TRUE;*/ + ctx->Extensions.ARB_multitexture = GL_TRUE; + ctx->Extensions.ARB_texture_border_clamp = GL_TRUE; + /*ctx->Extensions.ARB_texture_compression = GL_TRUE;*/ + ctx->Extensions.ARB_texture_cube_map = GL_TRUE; + ctx->Extensions.ARB_texture_env_combine = GL_TRUE; + ctx->Extensions.ARB_texture_env_dot3 = GL_TRUE; + ctx->Extensions.EXT_texture_env_add = GL_TRUE; + /*ctx->Extensions.ARB_transpose_matrix = GL_TRUE;*/ +} + + + +/** + * Enable all OpenGL 1.4 features and extensions. + * A convenience function to be called by drivers. + */ +void +_mesa_enable_1_4_extensions(struct gl_context *ctx) +{ + ctx->Extensions.ARB_depth_texture = GL_TRUE; + ctx->Extensions.ARB_shadow = GL_TRUE; + ctx->Extensions.ARB_texture_env_crossbar = GL_TRUE; + ctx->Extensions.ARB_texture_mirrored_repeat = GL_TRUE; + ctx->Extensions.ARB_window_pos = GL_TRUE; + ctx->Extensions.EXT_blend_color = GL_TRUE; + ctx->Extensions.EXT_blend_func_separate = GL_TRUE; + ctx->Extensions.EXT_blend_minmax = GL_TRUE; + ctx->Extensions.EXT_blend_subtract = GL_TRUE; + ctx->Extensions.EXT_fog_coord = GL_TRUE; + /*ctx->Extensions.EXT_multi_draw_arrays = GL_TRUE;*/ + ctx->Extensions.EXT_point_parameters = GL_TRUE; + ctx->Extensions.EXT_secondary_color = GL_TRUE; + ctx->Extensions.EXT_stencil_wrap = GL_TRUE; + ctx->Extensions.EXT_texture_lod_bias = GL_TRUE; + /*ctx->Extensions.SGIS_generate_mipmap = GL_TRUE;*/ +} + + +/** + * Enable all OpenGL 1.5 features and extensions. + * A convenience function to be called by drivers. + */ +void +_mesa_enable_1_5_extensions(struct gl_context *ctx) +{ + ctx->Extensions.ARB_occlusion_query = GL_TRUE; + /*ctx->Extensions.ARB_vertex_buffer_object = GL_TRUE;*/ + ctx->Extensions.EXT_shadow_funcs = GL_TRUE; +} + + +/** + * Enable all OpenGL 2.0 features and extensions. + * A convenience function to be called by drivers. + */ +void +_mesa_enable_2_0_extensions(struct gl_context *ctx) +{ + /*ctx->Extensions.ARB_draw_buffers = GL_TRUE;*/ +#if FEATURE_ARB_fragment_shader + ctx->Extensions.ARB_fragment_shader = GL_TRUE; +#endif + ctx->Extensions.ARB_point_sprite = GL_TRUE; + ctx->Extensions.EXT_blend_equation_separate = GL_TRUE; + ctx->Extensions.ARB_texture_non_power_of_two = GL_TRUE; +#if FEATURE_ARB_shader_objects + ctx->Extensions.ARB_shader_objects = GL_TRUE; +#endif +#if FEATURE_ARB_shading_language_100 + ctx->Extensions.ARB_shading_language_100 = GL_TRUE; +#endif + ctx->Extensions.EXT_stencil_two_side = GL_TRUE; +#if FEATURE_ARB_vertex_shader + ctx->Extensions.ARB_vertex_shader = GL_TRUE; +#endif +} + + +/** + * Enable all OpenGL 2.1 features and extensions. + * A convenience function to be called by drivers. + */ +void +_mesa_enable_2_1_extensions(struct gl_context *ctx) +{ +#if FEATURE_EXT_pixel_buffer_object + ctx->Extensions.EXT_pixel_buffer_object = GL_TRUE; +#endif +#if FEATURE_EXT_texture_sRGB + ctx->Extensions.EXT_texture_sRGB = GL_TRUE; +#endif +} + + +/** + * Either enable or disable the named extension. + * \return GL_TRUE for success, GL_FALSE if invalid extension name + */ +static GLboolean +set_extension( struct gl_context *ctx, const char *name, GLboolean state ) +{ + size_t offset; + + if (ctx->Extensions.String) { + /* The string was already queried - can't change it now! */ + _mesa_problem(ctx, "Trying to enable/disable extension after glGetString(GL_EXTENSIONS): %s", name); + return GL_FALSE; + } + + offset = name_to_offset(name); + if (offset == 0) { + _mesa_problem(ctx, "Trying to enable/disable unknown extension %s", + name); + return GL_FALSE; + } else if (offset == o(dummy_true) && state == GL_FALSE) { + _mesa_problem(ctx, "Trying to disable a permanently enabled extension: " + "%s", name); + return GL_FALSE; + } else { + GLboolean *base = (GLboolean *) &ctx->Extensions; + base[offset] = state; + return GL_TRUE; + } +} + + +/** + * Enable the named extension. + * Typically called by drivers. + */ +void +_mesa_enable_extension( struct gl_context *ctx, const char *name ) +{ + if (!set_extension(ctx, name, GL_TRUE)) + _mesa_problem(ctx, "Trying to enable unknown extension: %s", name); +} + + +/** + * Disable the named extension. + * XXX is this really needed??? + */ +void +_mesa_disable_extension( struct gl_context *ctx, const char *name ) +{ + if (!set_extension(ctx, name, GL_FALSE)) + _mesa_problem(ctx, "Trying to disable unknown extension: %s", name); +} + + +/** + * Test if the named extension is enabled in this context. + */ +GLboolean +_mesa_extension_is_enabled( struct gl_context *ctx, const char *name ) +{ + size_t offset; + GLboolean *base; + + if (name == 0) + return GL_FALSE; + + offset = name_to_offset(name); + if (offset == 0) + return GL_FALSE; + base = (GLboolean *) &ctx->Extensions; + return base[offset]; +} + + +/** + * Append string 'b' onto string 'a'. Free 'a' and return new string. + */ +static char * +append(const char *a, const char *b) +{ + const GLuint aLen = a ? strlen(a) : 0; + const GLuint bLen = b ? strlen(b) : 0; + char *s = calloc(1, aLen + bLen + 1); + if (s) { + if (a) + memcpy(s, a, aLen); + if (b) + memcpy(s + aLen, b, bLen); + s[aLen + bLen] = '\0'; + } + if (a) + free((void *) a); + return s; +} + + +/** + * Check the MESA_EXTENSION_OVERRIDE env var. + * For extension names that are recognized, turn them on. For extension + * names that are recognized and prefixed with '-', turn them off. + * Return a string of the unknown/leftover names. + * + * Returnd string needs to be freed. + */ +static char * +get_extension_override( struct gl_context *ctx ) +{ + const char *envExt = _mesa_getenv("MESA_EXTENSION_OVERRIDE"); + char *extraExt = NULL; + char ext[1000]; + GLuint extLen = 0; + GLuint i; + GLboolean disableExt = GL_FALSE; + + if (!envExt) + return NULL; + + for (i = 0; ; i++) { + if (envExt[i] == '\0' || envExt[i] == ' ') { + /* terminate/process 'ext' if extLen > 0 */ + if (extLen > 0) { + assert(extLen < sizeof(ext)); + /* enable extension named by 'ext' */ + ext[extLen] = 0; + if (!set_extension(ctx, ext, !disableExt)) { + /* unknown extension name, append it to extraExt */ + if (extraExt) { + extraExt = append(extraExt, " "); + } + extraExt = append(extraExt, ext); + } + extLen = 0; + disableExt = GL_FALSE; + } + if (envExt[i] == '\0') + break; + } + else if (envExt[i] == '-') { + disableExt = GL_TRUE; + } + else { + /* accumulate this non-space character */ + ext[extLen++] = envExt[i]; + } + } + + return extraExt; +} + + +/** + * \brief Initialize extension tables and enable default extensions. + * + * This should be called during context initialization. + * Note: Sets gl_extensions.dummy_true to true. + */ +void +_mesa_init_extensions( struct gl_context *ctx ) +{ + GLboolean *base = (GLboolean *) &ctx->Extensions; + GLboolean *sentinel = base + o(extension_sentinel); + GLboolean *i; + const size_t *j; + + /* First, turn all extensions off. */ + for (i = base; i != sentinel; ++i) + *i = GL_FALSE; + + /* Then, selectively turn default extensions on. */ + ctx->Extensions.dummy_true = GL_TRUE; + for (j = default_extensions; *j != 0; ++j) + base[*j] = GL_TRUE; +} + + +/** + * Construct the GL_EXTENSIONS string. Called the first time that + * glGetString(GL_EXTENSIONS) is called. + */ +GLubyte* +_mesa_make_extension_string(struct gl_context *ctx) +{ + /* The extension string. */ + char *exts = 0; + /* Length of extension string. */ + size_t length = 0; + /* String of extra extensions. */ + char *extra_extensions = get_extension_override(ctx); + GLboolean *base = (GLboolean *) &ctx->Extensions; + const struct extension *i; + + /* Compute length of the extension string. */ + for (i = extension_table; i->name != 0; ++i) { + if (base[i->offset] && (i->api_set & (1 << ctx->API))) { + length += strlen(i->name) + 1; /* +1 for space */ + } + } + if (extra_extensions != NULL) + length += 1 + strlen(extra_extensions); /* +1 for space */ + + exts = (char *) calloc(length + 1, sizeof(char)); + if (exts == NULL) { + free(extra_extensions); + return NULL; + } + + /* Build the extension string.*/ + for (i = extension_table; i->name != 0; ++i) { + if (base[i->offset] && (i->api_set & (1 << ctx->API))) { + strcat(exts, i->name); + strcat(exts, " "); + } + } + if (extra_extensions != 0) { + strcat(exts, extra_extensions); + free(extra_extensions); + } + + return (GLubyte *) exts; +} + +/** + * Return number of enabled extensions. + */ +GLuint +_mesa_get_extension_count(struct gl_context *ctx) +{ + GLboolean *base; + const struct extension *i; + + /* only count once */ + if (ctx->Extensions.Count != 0) + return ctx->Extensions.Count; + + base = (GLboolean *) &ctx->Extensions; + for (i = extension_table; i->name != 0; ++i) { + if (base[i->offset]) { + ctx->Extensions.Count++; + } + } + return ctx->Extensions.Count; +} + +/** + * Return name of i-th enabled extension + */ +const GLubyte * +_mesa_get_enabled_extension(struct gl_context *ctx, GLuint index) +{ + const GLboolean *base; + size_t n; + const struct extension *i; + + if (index < 0) + return NULL; + + base = (GLboolean*) &ctx->Extensions; + n = 0; + for (i = extension_table; i->name != 0; ++i) { + if (n == index && base[i->offset]) { + return (GLubyte*) i->name; + } else if (base[i->offset]) { + ++n; + } + } + + return NULL; +} diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c index 4ed2bb14e..ea9f803cb 100644 --- a/mesalib/src/mesa/main/fbobject.c +++ b/mesalib/src/mesa/main/fbobject.c @@ -1,2413 +1,2413 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.1
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-
-/*
- * GL_EXT/ARB_framebuffer_object extensions
- *
- * Authors:
- * Brian Paul
- */
-
-
-#include "buffers.h"
-#include "context.h"
-#include "enums.h"
-#include "fbobject.h"
-#include "formats.h"
-#include "framebuffer.h"
-#include "hash.h"
-#include "macros.h"
-#include "mfeatures.h"
-#include "mtypes.h"
-#include "renderbuffer.h"
-#include "state.h"
-#include "teximage.h"
-#include "texobj.h"
-
-
-/** Set this to 1 to help debug FBO incompleteness problems */
-#define DEBUG_FBO 0
-
-/** Set this to 1 to debug/log glBlitFramebuffer() calls */
-#define DEBUG_BLIT 0
-
-
-/**
- * Notes:
- *
- * None of the GL_EXT_framebuffer_object functions are compiled into
- * display lists.
- */
-
-
-
-/*
- * When glGenRender/FramebuffersEXT() is called we insert pointers to
- * these placeholder objects into the hash table.
- * Later, when the object ID is first bound, we replace the placeholder
- * with the real frame/renderbuffer.
- */
-static struct gl_framebuffer DummyFramebuffer;
-static struct gl_renderbuffer DummyRenderbuffer;
-
-/* We bind this framebuffer when applications pass a NULL
- * drawable/surface in make current. */
-static struct gl_framebuffer IncompleteFramebuffer;
-
-
-#define IS_CUBE_FACE(TARGET) \
- ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \
- (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z)
-
-
-static void
-delete_dummy_renderbuffer(struct gl_renderbuffer *rb)
-{
- /* no op */
-}
-
-static void
-delete_dummy_framebuffer(struct gl_framebuffer *fb)
-{
- /* no op */
-}
-
-
-void
-_mesa_init_fbobjects(struct gl_context *ctx)
-{
- _glthread_INIT_MUTEX(DummyFramebuffer.Mutex);
- _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex);
- _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex);
- DummyFramebuffer.Delete = delete_dummy_framebuffer;
- DummyRenderbuffer.Delete = delete_dummy_renderbuffer;
- IncompleteFramebuffer.Delete = delete_dummy_framebuffer;
-}
-
-struct gl_framebuffer *
-_mesa_get_incomplete_framebuffer(void)
-{
- return &IncompleteFramebuffer;
-}
-
-/**
- * Helper routine for getting a gl_renderbuffer.
- */
-struct gl_renderbuffer *
-_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id)
-{
- struct gl_renderbuffer *rb;
-
- if (id == 0)
- return NULL;
-
- rb = (struct gl_renderbuffer *)
- _mesa_HashLookup(ctx->Shared->RenderBuffers, id);
- return rb;
-}
-
-
-/**
- * Helper routine for getting a gl_framebuffer.
- */
-struct gl_framebuffer *
-_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id)
-{
- struct gl_framebuffer *fb;
-
- if (id == 0)
- return NULL;
-
- fb = (struct gl_framebuffer *)
- _mesa_HashLookup(ctx->Shared->FrameBuffers, id);
- return fb;
-}
-
-
-/**
- * Mark the given framebuffer as invalid. This will force the
- * test for framebuffer completeness to be done before the framebuffer
- * is used.
- */
-static void
-invalidate_framebuffer(struct gl_framebuffer *fb)
-{
- fb->_Status = 0; /* "indeterminate" */
-}
-
-
-/**
- * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding
- * gl_renderbuffer_attachment object.
- * This function is only used for user-created FB objects, not the
- * default / window-system FB object.
- * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to
- * the depth buffer attachment point.
- */
-struct gl_renderbuffer_attachment *
-_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
- GLenum attachment)
-{
- GLuint i;
-
- assert(fb->Name > 0);
-
- switch (attachment) {
- case GL_COLOR_ATTACHMENT0_EXT:
- case GL_COLOR_ATTACHMENT1_EXT:
- case GL_COLOR_ATTACHMENT2_EXT:
- case GL_COLOR_ATTACHMENT3_EXT:
- case GL_COLOR_ATTACHMENT4_EXT:
- case GL_COLOR_ATTACHMENT5_EXT:
- case GL_COLOR_ATTACHMENT6_EXT:
- case GL_COLOR_ATTACHMENT7_EXT:
- case GL_COLOR_ATTACHMENT8_EXT:
- case GL_COLOR_ATTACHMENT9_EXT:
- case GL_COLOR_ATTACHMENT10_EXT:
- case GL_COLOR_ATTACHMENT11_EXT:
- case GL_COLOR_ATTACHMENT12_EXT:
- case GL_COLOR_ATTACHMENT13_EXT:
- case GL_COLOR_ATTACHMENT14_EXT:
- case GL_COLOR_ATTACHMENT15_EXT:
- i = attachment - GL_COLOR_ATTACHMENT0_EXT;
- if (i >= ctx->Const.MaxColorAttachments) {
- return NULL;
- }
- return &fb->Attachment[BUFFER_COLOR0 + i];
- case GL_DEPTH_STENCIL_ATTACHMENT:
- /* fall-through */
- case GL_DEPTH_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_DEPTH_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_DEPTH];
- case GL_STENCIL_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_STENCIL_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_STENCIL];
- default:
- return NULL;
- }
-}
-
-
-/**
- * As above, but only used for getting attachments of the default /
- * window-system framebuffer (not user-created framebuffer objects).
- */
-static struct gl_renderbuffer_attachment *
-_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb,
- GLenum attachment)
-{
- assert(fb->Name == 0);
-
- switch (attachment) {
- case GL_FRONT_LEFT:
- return &fb->Attachment[BUFFER_FRONT_LEFT];
- case GL_FRONT_RIGHT:
- return &fb->Attachment[BUFFER_FRONT_RIGHT];
- case GL_BACK_LEFT:
- return &fb->Attachment[BUFFER_BACK_LEFT];
- case GL_BACK_RIGHT:
- return &fb->Attachment[BUFFER_BACK_RIGHT];
- case GL_AUX0:
- if (fb->Visual.numAuxBuffers == 1) {
- return &fb->Attachment[BUFFER_AUX0];
- }
- return NULL;
- case GL_DEPTH_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_DEPTH_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_DEPTH];
- case GL_STENCIL_BUFFER:
- /* fall-through / new in GL 3.0 */
- case GL_STENCIL_ATTACHMENT_EXT:
- return &fb->Attachment[BUFFER_STENCIL];
- default:
- return NULL;
- }
-}
-
-
-
-/**
- * Remove any texture or renderbuffer attached to the given attachment
- * point. Update reference counts, etc.
- */
-void
-_mesa_remove_attachment(struct gl_context *ctx,
- struct gl_renderbuffer_attachment *att)
-{
- if (att->Type == GL_TEXTURE) {
- ASSERT(att->Texture);
- if (ctx->Driver.FinishRenderTexture) {
- /* tell driver that we're done rendering to this texture. */
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- _mesa_reference_texobj(&att->Texture, NULL); /* unbind */
- ASSERT(!att->Texture);
- }
- if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) {
- ASSERT(!att->Texture);
- _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */
- ASSERT(!att->Renderbuffer);
- }
- att->Type = GL_NONE;
- att->Complete = GL_TRUE;
-}
-
-
-/**
- * Bind a texture object to an attachment point.
- * The previous binding, if any, will be removed first.
- */
-void
-_mesa_set_texture_attachment(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer_attachment *att,
- struct gl_texture_object *texObj,
- GLenum texTarget, GLuint level, GLuint zoffset)
-{
- if (att->Texture == texObj) {
- /* re-attaching same texture */
- ASSERT(att->Type == GL_TEXTURE);
- if (ctx->Driver.FinishRenderTexture)
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- else {
- /* new attachment */
- if (ctx->Driver.FinishRenderTexture && att->Texture)
- ctx->Driver.FinishRenderTexture(ctx, att);
- _mesa_remove_attachment(ctx, att);
- att->Type = GL_TEXTURE;
- assert(!att->Texture);
- _mesa_reference_texobj(&att->Texture, texObj);
- }
-
- /* always update these fields */
- att->TextureLevel = level;
- att->CubeMapFace = _mesa_tex_target_to_face(texTarget);
- att->Zoffset = zoffset;
- att->Complete = GL_FALSE;
-
- if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) {
- ctx->Driver.RenderTexture(ctx, fb, att);
- }
-
- invalidate_framebuffer(fb);
-}
-
-
-/**
- * Bind a renderbuffer to an attachment point.
- * The previous binding, if any, will be removed first.
- */
-void
-_mesa_set_renderbuffer_attachment(struct gl_context *ctx,
- struct gl_renderbuffer_attachment *att,
- struct gl_renderbuffer *rb)
-{
- /* XXX check if re-doing same attachment, exit early */
- _mesa_remove_attachment(ctx, att);
- att->Type = GL_RENDERBUFFER_EXT;
- att->Texture = NULL; /* just to be safe */
- att->Complete = GL_FALSE;
- _mesa_reference_renderbuffer(&att->Renderbuffer, rb);
-}
-
-
-/**
- * Fallback for ctx->Driver.FramebufferRenderbuffer()
- * Attach a renderbuffer object to a framebuffer object.
- */
-void
-_mesa_framebuffer_renderbuffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- GLenum attachment, struct gl_renderbuffer *rb)
-{
- struct gl_renderbuffer_attachment *att;
-
- _glthread_LOCK_MUTEX(fb->Mutex);
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- ASSERT(att);
- if (rb) {
- _mesa_set_renderbuffer_attachment(ctx, att, rb);
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
- /* do stencil attachment here (depth already done above) */
- att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT);
- assert(att);
- _mesa_set_renderbuffer_attachment(ctx, att, rb);
- }
- }
- else {
- _mesa_remove_attachment(ctx, att);
- }
-
- invalidate_framebuffer(fb);
-
- _glthread_UNLOCK_MUTEX(fb->Mutex);
-}
-
-
-/**
- * For debug only.
- */
-static void
-att_incomplete(const char *msg)
-{
-#if DEBUG_FBO
- _mesa_debug(NULL, "attachment incomplete: %s\n", msg);
-#else
- (void) msg;
-#endif
-}
-
-
-/**
- * For debug only.
- */
-static void
-fbo_incomplete(const char *msg, int index)
-{
-#if DEBUG_FBO
- _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index);
-#else
- (void) msg;
- (void) index;
-#endif
-}
-
-
-/**
- * Is the given base format a legal format for a color renderbuffer?
- */
-GLboolean
-_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat)
-{
- switch (baseFormat) {
- case GL_RGB:
- case GL_RGBA:
- return GL_TRUE;
- case GL_LUMINANCE:
- case GL_LUMINANCE_ALPHA:
- case GL_INTENSITY:
- case GL_ALPHA:
- return ctx->Extensions.ARB_framebuffer_object;
- case GL_RED:
- case GL_RG:
- return ctx->Extensions.ARB_texture_rg;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Is the given base format a legal format for a depth/stencil renderbuffer?
- */
-static GLboolean
-is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat)
-{
- switch (baseFormat) {
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_STENCIL_EXT:
- return GL_TRUE;
- default:
- return GL_FALSE;
- }
-}
-
-
-/**
- * Test if an attachment point is complete and update its Complete field.
- * \param format if GL_COLOR, this is a color attachment point,
- * if GL_DEPTH, this is a depth component attachment point,
- * if GL_STENCIL, this is a stencil component attachment point.
- */
-static void
-test_attachment_completeness(const struct gl_context *ctx, GLenum format,
- struct gl_renderbuffer_attachment *att)
-{
- assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL);
-
- /* assume complete */
- att->Complete = GL_TRUE;
-
- /* Look for reasons why the attachment might be incomplete */
- if (att->Type == GL_TEXTURE) {
- const struct gl_texture_object *texObj = att->Texture;
- struct gl_texture_image *texImage;
- GLenum baseFormat;
-
- if (!texObj) {
- att_incomplete("no texobj");
- att->Complete = GL_FALSE;
- return;
- }
-
- texImage = texObj->Image[att->CubeMapFace][att->TextureLevel];
- if (!texImage) {
- att_incomplete("no teximage");
- att->Complete = GL_FALSE;
- return;
- }
- if (texImage->Width < 1 || texImage->Height < 1) {
- att_incomplete("teximage width/height=0");
- printf("texobj = %u\n", texObj->Name);
- printf("level = %d\n", att->TextureLevel);
- att->Complete = GL_FALSE;
- return;
- }
- if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) {
- att_incomplete("bad z offset");
- att->Complete = GL_FALSE;
- return;
- }
-
- baseFormat = _mesa_get_format_base_format(texImage->TexFormat);
-
- if (format == GL_COLOR) {
- if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
- att_incomplete("bad format");
- att->Complete = GL_FALSE;
- return;
- }
- if (_mesa_is_format_compressed(texImage->TexFormat)) {
- att_incomplete("compressed internalformat");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else if (format == GL_DEPTH) {
- if (baseFormat == GL_DEPTH_COMPONENT) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- ctx->Extensions.ARB_depth_texture &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att->Complete = GL_FALSE;
- att_incomplete("bad depth format");
- return;
- }
- }
- else {
- ASSERT(format == GL_STENCIL);
- if (ctx->Extensions.EXT_packed_depth_stencil &&
- ctx->Extensions.ARB_depth_texture &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- /* no such thing as stencil-only textures */
- att_incomplete("illegal stencil texture");
- att->Complete = GL_FALSE;
- return;
- }
- }
- }
- else if (att->Type == GL_RENDERBUFFER_EXT) {
- const GLenum baseFormat =
- _mesa_get_format_base_format(att->Renderbuffer->Format);
-
- ASSERT(att->Renderbuffer);
- if (!att->Renderbuffer->InternalFormat ||
- att->Renderbuffer->Width < 1 ||
- att->Renderbuffer->Height < 1) {
- att_incomplete("0x0 renderbuffer");
- att->Complete = GL_FALSE;
- return;
- }
- if (format == GL_COLOR) {
- if (!_mesa_is_legal_color_format(ctx, baseFormat)) {
- att_incomplete("bad renderbuffer color format");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else if (format == GL_DEPTH) {
- if (baseFormat == GL_DEPTH_COMPONENT) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att_incomplete("bad renderbuffer depth format");
- att->Complete = GL_FALSE;
- return;
- }
- }
- else {
- assert(format == GL_STENCIL);
- if (baseFormat == GL_STENCIL_INDEX) {
- /* OK */
- }
- else if (ctx->Extensions.EXT_packed_depth_stencil &&
- baseFormat == GL_DEPTH_STENCIL_EXT) {
- /* OK */
- }
- else {
- att->Complete = GL_FALSE;
- att_incomplete("bad renderbuffer stencil format");
- return;
- }
- }
- }
- else {
- ASSERT(att->Type == GL_NONE);
- /* complete */
- return;
- }
-}
-
-
-/**
- * Test if the given framebuffer object is complete and update its
- * Status field with the results.
- * Calls the ctx->Driver.ValidateFramebuffer() function to allow the
- * driver to make hardware-specific validation/completeness checks.
- * Also update the framebuffer's Width and Height fields if the
- * framebuffer is complete.
- */
-void
-_mesa_test_framebuffer_completeness(struct gl_context *ctx,
- struct gl_framebuffer *fb)
-{
- GLuint numImages;
- GLenum intFormat = GL_NONE; /* color buffers' internal format */
- GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0;
- GLint numSamples = -1;
- GLint i;
- GLuint j;
-
- assert(fb->Name != 0);
-
- numImages = 0;
- fb->Width = 0;
- fb->Height = 0;
-
- /* Start at -2 to more easily loop over all attachment points.
- * -2: depth buffer
- * -1: stencil buffer
- * >=0: color buffer
- */
- for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) {
- struct gl_renderbuffer_attachment *att;
- GLenum f;
- gl_format mesaFormat;
-
- /*
- * XXX for ARB_fbo, only check color buffers that are named by
- * GL_READ_BUFFER and GL_DRAW_BUFFERi.
- */
-
- /* check for attachment completeness
- */
- if (i == -2) {
- att = &fb->Attachment[BUFFER_DEPTH];
- test_attachment_completeness(ctx, GL_DEPTH, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("depth attachment incomplete", -1);
- return;
- }
- }
- else if (i == -1) {
- att = &fb->Attachment[BUFFER_STENCIL];
- test_attachment_completeness(ctx, GL_STENCIL, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("stencil attachment incomplete", -1);
- return;
- }
- }
- else {
- att = &fb->Attachment[BUFFER_COLOR0 + i];
- test_attachment_completeness(ctx, GL_COLOR, att);
- if (!att->Complete) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT;
- fbo_incomplete("color attachment incomplete", i);
- return;
- }
- }
-
- /* get width, height, format of the renderbuffer/texture
- */
- if (att->Type == GL_TEXTURE) {
- const struct gl_texture_image *texImg
- = att->Texture->Image[att->CubeMapFace][att->TextureLevel];
- minWidth = MIN2(minWidth, texImg->Width);
- maxWidth = MAX2(maxWidth, texImg->Width);
- minHeight = MIN2(minHeight, texImg->Height);
- maxHeight = MAX2(maxHeight, texImg->Height);
- f = texImg->_BaseFormat;
- mesaFormat = texImg->TexFormat;
- numImages++;
- if (!_mesa_is_legal_color_format(ctx, f) &&
- !is_legal_depth_format(ctx, f)) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
- fbo_incomplete("texture attachment incomplete", -1);
- return;
- }
- }
- else if (att->Type == GL_RENDERBUFFER_EXT) {
- minWidth = MIN2(minWidth, att->Renderbuffer->Width);
- maxWidth = MAX2(minWidth, att->Renderbuffer->Width);
- minHeight = MIN2(minHeight, att->Renderbuffer->Height);
- maxHeight = MAX2(minHeight, att->Renderbuffer->Height);
- f = att->Renderbuffer->InternalFormat;
- mesaFormat = att->Renderbuffer->Format;
- numImages++;
- }
- else {
- assert(att->Type == GL_NONE);
- continue;
- }
-
- if (numSamples < 0) {
- /* first buffer */
- numSamples = att->Renderbuffer->NumSamples;
- }
-
- /* check if integer color */
- fb->_IntegerColor = _mesa_is_format_integer_color(mesaFormat);
-
- /* Error-check width, height, format, samples
- */
- if (numImages == 1) {
- /* save format, num samples */
- if (i >= 0) {
- intFormat = f;
- }
- }
- else {
- if (!ctx->Extensions.ARB_framebuffer_object) {
- /* check that width, height, format are same */
- if (minWidth != maxWidth || minHeight != maxHeight) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT;
- fbo_incomplete("width or height mismatch", -1);
- return;
- }
- /* check that all color buffer have same format */
- if (intFormat != GL_NONE && f != intFormat) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT;
- fbo_incomplete("format mismatch", -1);
- return;
- }
- }
- if (att->Renderbuffer &&
- att->Renderbuffer->NumSamples != numSamples) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE;
- fbo_incomplete("inconsistant number of samples", i);
- return;
- }
-
- }
- }
-
-#if FEATURE_GL
- if (ctx->API == API_OPENGL) {
- /* Check that all DrawBuffers are present */
- for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) {
- if (fb->ColorDrawBuffer[j] != GL_NONE) {
- const struct gl_renderbuffer_attachment *att
- = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]);
- assert(att);
- if (att->Type == GL_NONE) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT;
- fbo_incomplete("missing drawbuffer", j);
- return;
- }
- }
- }
-
- /* Check that the ReadBuffer is present */
- if (fb->ColorReadBuffer != GL_NONE) {
- const struct gl_renderbuffer_attachment *att
- = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer);
- assert(att);
- if (att->Type == GL_NONE) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT;
- fbo_incomplete("missing readbuffer", -1);
- return;
- }
- }
- }
-#else
- (void) j;
-#endif
-
- if (numImages == 0) {
- fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT;
- fbo_incomplete("no attachments", -1);
- return;
- }
-
- /* Provisionally set status = COMPLETE ... */
- fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT;
-
- /* ... but the driver may say the FB is incomplete.
- * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED
- * if anything.
- */
- if (ctx->Driver.ValidateFramebuffer) {
- ctx->Driver.ValidateFramebuffer(ctx, fb);
- if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- fbo_incomplete("driver marked FBO as incomplete", -1);
- }
- }
-
- if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) {
- /*
- * Note that if ARB_framebuffer_object is supported and the attached
- * renderbuffers/textures are different sizes, the framebuffer
- * width/height will be set to the smallest width/height.
- */
- fb->Width = minWidth;
- fb->Height = minHeight;
-
- /* finally, update the visual info for the framebuffer */
- _mesa_update_framebuffer_visual(ctx, fb);
- }
-}
-
-
-GLboolean GLAPIENTRY
-_mesa_IsRenderbufferEXT(GLuint renderbuffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
- if (renderbuffer) {
- struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (rb != NULL && rb != &DummyRenderbuffer)
- return GL_TRUE;
- }
- return GL_FALSE;
-}
-
-
-void GLAPIENTRY
-_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer)
-{
- struct gl_renderbuffer *newRb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)");
- return;
- }
-
- /* No need to flush here since the render buffer binding has no
- * effect on rendering state.
- */
-
- if (renderbuffer) {
- newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (newRb == &DummyRenderbuffer) {
- /* ID was reserved, but no real renderbuffer object made yet */
- newRb = NULL;
- }
- else if (!newRb && ctx->Extensions.ARB_framebuffer_object) {
- /* All RB IDs must be Gen'd */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)");
- return;
- }
-
- if (!newRb) {
- /* create new renderbuffer object */
- newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer);
- if (!newRb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT");
- return;
- }
- ASSERT(newRb->AllocStorage);
- _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb);
- newRb->RefCount = 1; /* referenced by hash table */
- }
- }
- else {
- newRb = NULL;
- }
-
- ASSERT(newRb != &DummyRenderbuffer);
-
- _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb);
-}
-
-
-/**
- * If the given renderbuffer is anywhere attached to the framebuffer, detach
- * the renderbuffer.
- * This is used when a renderbuffer object is deleted.
- * The spec calls for unbinding.
- */
-static void
-detach_renderbuffer(struct gl_context *ctx,
- struct gl_framebuffer *fb,
- struct gl_renderbuffer *rb)
-{
- GLuint i;
- for (i = 0; i < BUFFER_COUNT; i++) {
- if (fb->Attachment[i].Renderbuffer == rb) {
- _mesa_remove_attachment(ctx, &fb->Attachment[i]);
- }
- }
- invalidate_framebuffer(fb);
-}
-
-
-void GLAPIENTRY
-_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers)
-{
- GLint i;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- for (i = 0; i < n; i++) {
- if (renderbuffers[i] > 0) {
- struct gl_renderbuffer *rb;
- rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]);
- if (rb) {
- /* check if deleting currently bound renderbuffer object */
- if (rb == ctx->CurrentRenderbuffer) {
- /* bind default */
- ASSERT(rb->RefCount >= 2);
- _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0);
- }
-
- if (ctx->DrawBuffer->Name) {
- detach_renderbuffer(ctx, ctx->DrawBuffer, rb);
- }
- if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) {
- detach_renderbuffer(ctx, ctx->ReadBuffer, rb);
- }
-
- /* Remove from hash table immediately, to free the ID.
- * But the object will not be freed until it's no longer
- * referenced anywhere else.
- */
- _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]);
-
- if (rb != &DummyRenderbuffer) {
- /* no longer referenced by hash table */
- _mesa_reference_renderbuffer(&rb, NULL);
- }
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)");
- return;
- }
-
- if (!renderbuffers)
- return;
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n);
-
- for (i = 0; i < n; i++) {
- GLuint name = first + i;
- renderbuffers[i] = name;
- /* insert dummy placeholder into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- }
-}
-
-
-/**
- * Given an internal format token for a render buffer, return the
- * corresponding base format.
- * This is very similar to _mesa_base_tex_format() but the set of valid
- * internal formats is somewhat different.
- *
- * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT
- * GL_DEPTH_STENCIL_EXT or zero if error.
- *
- * XXX in the future when we support red-only and red-green formats
- * we'll also return GL_RED and GL_RG.
- */
-GLenum
-_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat)
-{
- switch (internalFormat) {
- case GL_ALPHA:
- case GL_ALPHA4:
- case GL_ALPHA8:
- case GL_ALPHA12:
- case GL_ALPHA16:
- return GL_ALPHA;
- case GL_RGB:
- case GL_R3_G3_B2:
- case GL_RGB4:
- case GL_RGB5:
- case GL_RGB8:
- case GL_RGB10:
- case GL_RGB12:
- case GL_RGB16:
- return GL_RGB;
- case GL_RGBA:
- case GL_RGBA2:
- case GL_RGBA4:
- case GL_RGB5_A1:
- case GL_RGBA8:
- case GL_RGB10_A2:
- case GL_RGBA12:
- case GL_RGBA16:
- case GL_RGBA16_SNORM:
- case GL_SRGB8_ALPHA8_EXT:
- case GL_SRGB8_EXT:
- return GL_RGBA;
- case GL_STENCIL_INDEX:
- case GL_STENCIL_INDEX1_EXT:
- case GL_STENCIL_INDEX4_EXT:
- case GL_STENCIL_INDEX8_EXT:
- case GL_STENCIL_INDEX16_EXT:
- return GL_STENCIL_INDEX;
- case GL_DEPTH_COMPONENT:
- case GL_DEPTH_COMPONENT16:
- case GL_DEPTH_COMPONENT24:
- case GL_DEPTH_COMPONENT32:
- return GL_DEPTH_COMPONENT;
- case GL_DEPTH_STENCIL_EXT:
- case GL_DEPTH24_STENCIL8_EXT:
- if (ctx->Extensions.EXT_packed_depth_stencil)
- return GL_DEPTH_STENCIL_EXT;
- else
- return 0;
- /* XXX add floating point formats eventually */
- default:
- return 0;
- }
-}
-
-
-/** sentinal value, see below */
-#define NO_SAMPLES 1000
-
-
-/**
- * Helper function used by _mesa_RenderbufferStorageEXT() and
- * _mesa_RenderbufferStorageMultisample().
- * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT().
- */
-static void
-renderbuffer_storage(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height, GLsizei samples)
-{
- const char *func = samples == NO_SAMPLES ?
- "glRenderbufferStorage" : "RenderbufferStorageMultisample";
- struct gl_renderbuffer *rb;
- GLenum baseFormat;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func);
- return;
- }
-
- baseFormat = _mesa_base_fbo_format(ctx, internalFormat);
- if (baseFormat == 0) {
- _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func);
- return;
- }
-
- if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func);
- return;
- }
-
- if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) {
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func);
- return;
- }
-
- if (samples == NO_SAMPLES) {
- /* NumSamples == 0 indicates non-multisampling */
- samples = 0;
- }
- else if (samples > (GLsizei) ctx->Const.MaxSamples) {
- /* note: driver may choose to use more samples than what's requested */
- _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func);
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func);
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- if (rb->InternalFormat == internalFormat &&
- rb->Width == (GLuint) width &&
- rb->Height == (GLuint) height) {
- /* no change in allocation needed */
- return;
- }
-
- /* These MUST get set by the AllocStorage func */
- rb->Format = MESA_FORMAT_NONE;
- rb->NumSamples = samples;
-
- /* Now allocate the storage */
- ASSERT(rb->AllocStorage);
- if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) {
- /* No error - check/set fields now */
- assert(rb->Format != MESA_FORMAT_NONE);
- assert(rb->Width == (GLuint) width);
- assert(rb->Height == (GLuint) height);
- rb->InternalFormat = internalFormat;
- rb->_BaseFormat = baseFormat;
- assert(rb->_BaseFormat != 0);
- }
- else {
- /* Probably ran out of memory - clear the fields */
- rb->Width = 0;
- rb->Height = 0;
- rb->Format = MESA_FORMAT_NONE;
- rb->InternalFormat = GL_NONE;
- rb->_BaseFormat = GL_NONE;
- rb->NumSamples = 0;
- }
-
- /*
- test_framebuffer_completeness(ctx, fb);
- */
- /* XXX if this renderbuffer is attached anywhere, invalidate attachment
- * points???
- */
-}
-
-
-#if FEATURE_OES_EGL_image
-void GLAPIENTRY
-_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image)
-{
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (!ctx->Extensions.OES_EGL_image) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glEGLImageTargetRenderbufferStorageOES(unsupported)");
- return;
- }
-
- if (target != GL_RENDERBUFFER) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "EGLImageTargetRenderbufferStorageOES");
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "EGLImageTargetRenderbufferStorageOES");
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image);
-}
-#endif
-
-
-/**
- * Helper function for _mesa_GetRenderbufferParameterivEXT() and
- * _mesa_GetFramebufferAttachmentParameterivEXT()
- * We have to be careful to respect the base format. For example, if a
- * renderbuffer/texture was created with internalFormat=GL_RGB but the
- * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE
- * we need to return zero.
- */
-static GLint
-get_component_bits(GLenum pname, GLenum baseFormat, gl_format format)
-{
- switch (pname) {
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA ||
- baseFormat == GL_RG || baseFormat == GL_RED)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- if (baseFormat == GL_RGB || baseFormat == GL_RGBA)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA ||
- baseFormat == GL_LUMINANCE_ALPHA)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL)
- return _mesa_get_format_bits(format, pname);
- else
- return 0;
- default:
- return 0;
- }
-}
-
-
-
-void GLAPIENTRY
-_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- /* GL_ARB_fbo says calling this function is equivalent to calling
- * glRenderbufferStorageMultisample() with samples=0. We pass in
- * a token value here just for error reporting purposes.
- */
- renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES);
-}
-
-
-void GLAPIENTRY
-_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples,
- GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- renderbuffer_storage(target, internalFormat, width, height, samples);
-}
-
-
-/**
- * OpenGL ES version of glRenderBufferStorage.
- */
-void GLAPIENTRY
-_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat,
- GLsizei width, GLsizei height)
-{
- switch (internalFormat) {
- case GL_RGB565:
- /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */
- /* choose a closest format */
- internalFormat = GL_RGB5;
- break;
- default:
- break;
- }
-
- renderbuffer_storage(target, internalFormat, width, height, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params)
-{
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (target != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetRenderbufferParameterivEXT(target)");
- return;
- }
-
- rb = ctx->CurrentRenderbuffer;
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetRenderbufferParameterivEXT");
- return;
- }
-
- /* No need to flush here since we're just quering state which is
- * not effected by rendering.
- */
-
- switch (pname) {
- case GL_RENDERBUFFER_WIDTH_EXT:
- *params = rb->Width;
- return;
- case GL_RENDERBUFFER_HEIGHT_EXT:
- *params = rb->Height;
- return;
- case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT:
- *params = rb->InternalFormat;
- return;
- case GL_RENDERBUFFER_RED_SIZE_EXT:
- case GL_RENDERBUFFER_GREEN_SIZE_EXT:
- case GL_RENDERBUFFER_BLUE_SIZE_EXT:
- case GL_RENDERBUFFER_ALPHA_SIZE_EXT:
- case GL_RENDERBUFFER_DEPTH_SIZE_EXT:
- case GL_RENDERBUFFER_STENCIL_SIZE_EXT:
- *params = get_component_bits(pname, rb->_BaseFormat, rb->Format);
- break;
- case GL_RENDERBUFFER_SAMPLES:
- if (ctx->Extensions.ARB_framebuffer_object) {
- *params = rb->NumSamples;
- break;
- }
- /* fallthrough */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetRenderbufferParameterivEXT(target)");
- return;
- }
-}
-
-
-GLboolean GLAPIENTRY
-_mesa_IsFramebufferEXT(GLuint framebuffer)
-{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
- if (framebuffer) {
- struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer);
- if (rb != NULL && rb != &DummyFramebuffer)
- return GL_TRUE;
- }
- return GL_FALSE;
-}
-
-
-/**
- * Check if any of the attachments of the given framebuffer are textures
- * (render to texture). Call ctx->Driver.RenderTexture() for such
- * attachments.
- */
-static void
-check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- GLuint i;
- ASSERT(ctx->Driver.RenderTexture);
-
- if (fb->Name == 0)
- return; /* can't render to texture with winsys framebuffers */
-
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- struct gl_texture_object *texObj = att->Texture;
- if (texObj
- && texObj->Image[att->CubeMapFace][att->TextureLevel]) {
- ctx->Driver.RenderTexture(ctx, fb, att);
- }
- }
-}
-
-
-/**
- * Examine all the framebuffer's attachments to see if any are textures.
- * If so, call ctx->Driver.FinishRenderTexture() for each texture to
- * notify the device driver that the texture image may have changed.
- */
-static void
-check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb)
-{
- if (fb->Name == 0)
- return; /* can't render to texture with winsys framebuffers */
-
- if (ctx->Driver.FinishRenderTexture) {
- GLuint i;
- for (i = 0; i < BUFFER_COUNT; i++) {
- struct gl_renderbuffer_attachment *att = fb->Attachment + i;
- if (att->Texture && att->Renderbuffer) {
- ctx->Driver.FinishRenderTexture(ctx, att);
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer)
-{
- struct gl_framebuffer *newDrawFb, *newReadFb;
- struct gl_framebuffer *oldDrawFb, *oldReadFb;
- GLboolean bindReadBuf, bindDrawBuf;
- GET_CURRENT_CONTEXT(ctx);
-
-#ifdef DEBUG
- if (ctx->Extensions.ARB_framebuffer_object) {
- ASSERT(ctx->Extensions.EXT_framebuffer_object);
- ASSERT(ctx->Extensions.EXT_framebuffer_blit);
- }
-#endif
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (!ctx->Extensions.EXT_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBindFramebufferEXT(unsupported)");
- return;
- }
-
- switch (target) {
-#if FEATURE_EXT_framebuffer_blit
- case GL_DRAW_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
- bindDrawBuf = GL_TRUE;
- bindReadBuf = GL_FALSE;
- break;
- case GL_READ_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
- bindDrawBuf = GL_FALSE;
- bindReadBuf = GL_TRUE;
- break;
-#endif
- case GL_FRAMEBUFFER_EXT:
- bindDrawBuf = GL_TRUE;
- bindReadBuf = GL_TRUE;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)");
- return;
- }
-
- if (framebuffer) {
- /* Binding a user-created framebuffer object */
- newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer);
- if (newDrawFb == &DummyFramebuffer) {
- /* ID was reserved, but no real framebuffer object made yet */
- newDrawFb = NULL;
- }
- else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) {
- /* All FBO IDs must be Gen'd */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)");
- return;
- }
-
- if (!newDrawFb) {
- /* create new framebuffer object */
- newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer);
- if (!newDrawFb) {
- _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT");
- return;
- }
- _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb);
- }
- newReadFb = newDrawFb;
- }
- else {
- /* Binding the window system framebuffer (which was originally set
- * with MakeCurrent).
- */
- newDrawFb = ctx->WinSysDrawBuffer;
- newReadFb = ctx->WinSysReadBuffer;
- }
-
- ASSERT(newDrawFb);
- ASSERT(newDrawFb != &DummyFramebuffer);
-
- /* save pointers to current/old framebuffers */
- oldDrawFb = ctx->DrawBuffer;
- oldReadFb = ctx->ReadBuffer;
-
- /* check if really changing bindings */
- if (oldDrawFb == newDrawFb)
- bindDrawBuf = GL_FALSE;
- if (oldReadFb == newReadFb)
- bindReadBuf = GL_FALSE;
-
- /*
- * OK, now bind the new Draw/Read framebuffers, if they're changing.
- *
- * We also check if we're beginning and/or ending render-to-texture.
- * When a framebuffer with texture attachments is unbound, call
- * ctx->Driver.FinishRenderTexture().
- * When a framebuffer with texture attachments is bound, call
- * ctx->Driver.RenderTexture().
- *
- * Note that if the ReadBuffer has texture attachments we don't consider
- * that a render-to-texture case.
- */
- if (bindReadBuf) {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- /* check if old readbuffer was render-to-texture */
- check_end_texture_render(ctx, oldReadFb);
-
- _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb);
- }
-
- if (bindDrawBuf) {
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- /* check if old read/draw buffers were render-to-texture */
- if (!bindReadBuf)
- check_end_texture_render(ctx, oldReadFb);
-
- if (oldDrawFb != oldReadFb)
- check_end_texture_render(ctx, oldDrawFb);
-
- /* check if newly bound framebuffer has any texture attachments */
- check_begin_texture_render(ctx, newDrawFb);
-
- _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb);
- }
-
- if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) {
- ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb);
- }
-}
-
-
-void GLAPIENTRY
-_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers)
-{
- GLint i;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- for (i = 0; i < n; i++) {
- if (framebuffers[i] > 0) {
- struct gl_framebuffer *fb;
- fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]);
- if (fb) {
- ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]);
-
- /* check if deleting currently bound framebuffer object */
- if (ctx->Extensions.EXT_framebuffer_blit) {
- /* separate draw/read binding points */
- if (fb == ctx->DrawBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0);
- }
- if (fb == ctx->ReadBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0);
- }
- }
- else {
- /* only one binding point for read/draw buffers */
- if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) {
- /* bind default */
- ASSERT(fb->RefCount >= 2);
- _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
- }
- }
-
- /* remove from hash table immediately, to free the ID */
- _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]);
-
- if (fb != &DummyFramebuffer) {
- /* But the object will not be freed until it's no longer
- * bound in any context.
- */
- _mesa_reference_framebuffer(&fb, NULL);
- }
- }
- }
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers)
-{
- GET_CURRENT_CONTEXT(ctx);
- GLuint first;
- GLint i;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- if (n < 0) {
- _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)");
- return;
- }
-
- if (!framebuffers)
- return;
-
- first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n);
-
- for (i = 0; i < n; i++) {
- GLuint name = first + i;
- framebuffers[i] = name;
- /* insert dummy placeholder into hash table */
- _glthread_LOCK_MUTEX(ctx->Shared->Mutex);
- _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer);
- _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
- }
-}
-
-
-
-GLenum GLAPIENTRY
-_mesa_CheckFramebufferStatusEXT(GLenum target)
-{
- struct gl_framebuffer *buffer;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0);
-
- switch (target) {
-#if FEATURE_EXT_framebuffer_blit
- case GL_DRAW_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
- return 0;
- }
- buffer = ctx->DrawBuffer;
- break;
- case GL_READ_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
- return 0;
- }
- buffer = ctx->ReadBuffer;
- break;
-#endif
- case GL_FRAMEBUFFER_EXT:
- buffer = ctx->DrawBuffer;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)");
- return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */
- }
-
- if (buffer->Name == 0) {
- /* The window system / default framebuffer is always complete */
- return GL_FRAMEBUFFER_COMPLETE_EXT;
- }
-
- /* No need to flush here */
-
- if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) {
- _mesa_test_framebuffer_completeness(ctx, buffer);
- }
-
- return buffer->_Status;
-}
-
-
-
-/**
- * Common code called by glFramebufferTexture1D/2D/3DEXT().
- */
-static void
-framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target,
- GLenum attachment, GLenum textarget, GLuint texture,
- GLint level, GLint zoffset)
-{
- struct gl_renderbuffer_attachment *att;
- struct gl_texture_object *texObj = NULL;
- struct gl_framebuffer *fb;
- GLboolean error = GL_FALSE;
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (target) {
- case GL_READ_FRAMEBUFFER_EXT:
- error = !ctx->Extensions.EXT_framebuffer_blit;
- fb = ctx->ReadBuffer;
- break;
- case GL_DRAW_FRAMEBUFFER_EXT:
- error = !ctx->Extensions.EXT_framebuffer_blit;
- /* fall-through */
- case GL_FRAMEBUFFER_EXT:
- fb = ctx->DrawBuffer;
- break;
- default:
- error = GL_TRUE;
- }
-
- if (error) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture%sEXT(target=0x%x)", caller, target);
- return;
- }
-
- ASSERT(fb);
-
- /* check framebuffer binding */
- if (fb->Name == 0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT", caller);
- return;
- }
-
-
- /* The textarget, level, and zoffset parameters are only validated if
- * texture is non-zero.
- */
- if (texture) {
- GLboolean err = GL_TRUE;
-
- texObj = _mesa_lookup_texture(ctx, texture);
- if (texObj != NULL) {
- if (textarget == 0) {
- /* XXX what's the purpose of this? */
- err = (texObj->Target != GL_TEXTURE_3D) &&
- (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) &&
- (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT);
- }
- else {
- err = (texObj->Target == GL_TEXTURE_CUBE_MAP)
- ? !IS_CUBE_FACE(textarget)
- : (texObj->Target != textarget);
- }
- }
- else {
- /* can't render to a non-existant texture */
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT(non existant texture)",
- caller);
- return;
- }
-
- if (err) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture%sEXT(texture target mismatch)",
- caller);
- return;
- }
-
- if (texObj->Target == GL_TEXTURE_3D) {
- const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1);
- if (zoffset < 0 || zoffset >= maxSize) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(zoffset)", caller);
- return;
- }
- }
- else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) ||
- (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) {
- if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(layer)", caller);
- return;
- }
- }
-
- if ((level < 0) ||
- (level >= _mesa_max_texture_levels(ctx, texObj->Target))) {
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferTexture%sEXT(level)", caller);
- return;
- }
- }
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture%sEXT(attachment)", caller);
- return;
- }
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- _glthread_LOCK_MUTEX(fb->Mutex);
- if (texObj) {
- _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget,
- level, zoffset);
- /* Set the render-to-texture flag. We'll check this flag in
- * glTexImage() and friends to determine if we need to revalidate
- * any FBOs that might be rendering into this texture.
- * This flag never gets cleared since it's non-trivial to determine
- * when all FBOs might be done rendering to this texture. That's OK
- * though since it's uncommon to render to a texture then repeatedly
- * call glTexImage() to change images in the texture.
- */
- texObj->_RenderToTexture = GL_TRUE;
- }
- else {
- _mesa_remove_attachment(ctx, att);
- }
-
- invalidate_framebuffer(fb);
-
- _glthread_UNLOCK_MUTEX(fb->Mutex);
-}
-
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) && (textarget != GL_TEXTURE_1D)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture1DEXT(textarget)");
- return;
- }
-
- framebuffer_texture(ctx, "1D", target, attachment, textarget, texture,
- level, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) &&
- (textarget != GL_TEXTURE_2D) &&
- (textarget != GL_TEXTURE_RECTANGLE_ARB) &&
- (!IS_CUBE_FACE(textarget))) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTexture2DEXT(textarget=0x%x)", textarget);
- return;
- }
-
- framebuffer_texture(ctx, "2D", target, attachment, textarget, texture,
- level, 0);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment,
- GLenum textarget, GLuint texture,
- GLint level, GLint zoffset)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- if ((texture != 0) && (textarget != GL_TEXTURE_3D)) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferTexture3DEXT(textarget)");
- return;
- }
-
- framebuffer_texture(ctx, "3D", target, attachment, textarget, texture,
- level, zoffset);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment,
- GLuint texture, GLint level, GLint layer)
-{
- GET_CURRENT_CONTEXT(ctx);
-
- framebuffer_texture(ctx, "Layer", target, attachment, 0, texture,
- level, layer);
-}
-
-
-void GLAPIENTRY
-_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment,
- GLenum renderbufferTarget,
- GLuint renderbuffer)
-{
- struct gl_renderbuffer_attachment *att;
- struct gl_framebuffer *fb;
- struct gl_renderbuffer *rb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (target) {
-#if FEATURE_EXT_framebuffer_blit
- case GL_DRAW_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(target)");
- return;
- }
- fb = ctx->DrawBuffer;
- break;
- case GL_READ_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(target)");
- return;
- }
- fb = ctx->ReadBuffer;
- break;
-#endif
- case GL_FRAMEBUFFER_EXT:
- fb = ctx->DrawBuffer;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(target)");
- return;
- }
-
- if (renderbufferTarget != GL_RENDERBUFFER_EXT) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(renderbufferTarget)");
- return;
- }
-
- if (fb->Name == 0) {
- /* Can't attach new renderbuffers to a window system framebuffer */
- _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT");
- return;
- }
-
- att = _mesa_get_attachment(ctx, fb, attachment);
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glFramebufferRenderbufferEXT(invalid attachment %s)",
- _mesa_lookup_enum_by_nr(attachment));
- return;
- }
-
- if (renderbuffer) {
- rb = _mesa_lookup_renderbuffer(ctx, renderbuffer);
- if (!rb) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferRenderbufferEXT(non-existant"
- " renderbuffer %u)", renderbuffer);
- return;
- }
- else if (rb == &DummyRenderbuffer) {
- /* This is what NVIDIA does */
- _mesa_error(ctx, GL_INVALID_VALUE,
- "glFramebufferRenderbufferEXT(renderbuffer %u)",
- renderbuffer);
- return;
- }
- }
- else {
- /* remove renderbuffer attachment */
- rb = NULL;
- }
-
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT &&
- rb && rb->Format != MESA_FORMAT_NONE) {
- /* make sure the renderbuffer is a depth/stencil format */
- const GLenum baseFormat = _mesa_get_format_base_format(rb->Format);
- if (baseFormat != GL_DEPTH_STENCIL) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferRenderbufferEXT(renderbuffer"
- " is not DEPTH_STENCIL format)");
- return;
- }
- }
-
-
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- assert(ctx->Driver.FramebufferRenderbuffer);
- ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb);
-
- /* Some subsequent GL commands may depend on the framebuffer's visual
- * after the binding is updated. Update visual info now.
- */
- _mesa_update_framebuffer_visual(ctx, fb);
-}
-
-
-void GLAPIENTRY
-_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment,
- GLenum pname, GLint *params)
-{
- const struct gl_renderbuffer_attachment *att;
- struct gl_framebuffer *buffer;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (target) {
-#if FEATURE_EXT_framebuffer_blit
- case GL_DRAW_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(target)");
- return;
- }
- buffer = ctx->DrawBuffer;
- break;
- case GL_READ_FRAMEBUFFER_EXT:
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(target)");
- return;
- }
- buffer = ctx->ReadBuffer;
- break;
-#endif
- case GL_FRAMEBUFFER_EXT:
- buffer = ctx->DrawBuffer;
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(target)");
- return;
- }
-
- if (buffer->Name == 0) {
- /* the default / window-system FBO */
- att = _mesa_get_fb0_attachment(ctx, buffer, attachment);
- }
- else {
- /* user-created framebuffer FBO */
- att = _mesa_get_attachment(ctx, buffer, attachment);
- }
-
- if (att == NULL) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(attachment)");
- return;
- }
-
- if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) {
- /* the depth and stencil attachments must point to the same buffer */
- const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt;
- depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT);
- stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT);
- if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL"
- " attachments differ)");
- return;
- }
- }
-
- /* No need to flush here */
-
- switch (pname) {
- case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT:
- *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type;
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT:
- if (att->Type == GL_RENDERBUFFER_EXT) {
- *params = att->Renderbuffer->Name;
- }
- else if (att->Type == GL_TEXTURE) {
- *params = att->Texture->Name;
- }
- else {
- assert(att->Type == GL_NONE);
- *params = 0;
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT:
- if (att->Type == GL_TEXTURE) {
- *params = att->TextureLevel;
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT:
- if (att->Type == GL_TEXTURE) {
- if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) {
- *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace;
- }
- else {
- *params = 0;
- }
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT:
- if (att->Type == GL_TEXTURE) {
- if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) {
- *params = att->Zoffset;
- }
- else {
- *params = 0;
- }
- }
- else {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- else {
- *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format);
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- return;
- }
- else {
- gl_format format = att->Renderbuffer->Format;
- if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) {
- /* special cases */
- *params = GL_INDEX;
- }
- else {
- *params = _mesa_get_format_datatype(format);
- }
- }
- return;
- case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
- case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
- if (!ctx->Extensions.ARB_framebuffer_object) {
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- }
- else if (att->Texture) {
- const struct gl_texture_image *texImage =
- _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target,
- att->TextureLevel);
- if (texImage) {
- *params = get_component_bits(pname, texImage->_BaseFormat,
- texImage->TexFormat);
- }
- else {
- *params = 0;
- }
- }
- else if (att->Renderbuffer) {
- *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat,
- att->Renderbuffer->Format);
- }
- else {
- *params = 0;
- }
- return;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM,
- "glGetFramebufferAttachmentParameterivEXT(pname)");
- return;
- }
-}
-
-
-void GLAPIENTRY
-_mesa_GenerateMipmapEXT(GLenum target)
-{
- struct gl_texture_object *texObj;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- switch (target) {
- case GL_TEXTURE_1D:
- case GL_TEXTURE_2D:
- case GL_TEXTURE_3D:
- case GL_TEXTURE_CUBE_MAP:
- /* OK, legal value */
- break;
- default:
- /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */
- _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)");
- return;
- }
-
- texObj = _mesa_get_current_tex_object(ctx, target);
-
- if (texObj->BaseLevel >= texObj->MaxLevel) {
- /* nothing to do */
- return;
- }
-
- if (texObj->Target == GL_TEXTURE_CUBE_MAP &&
- !_mesa_cube_complete(texObj)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glGenerateMipmap(incomplete cube map)");
- return;
- }
-
- _mesa_lock_texture(ctx, texObj);
- if (target == GL_TEXTURE_CUBE_MAP) {
- GLuint face;
- for (face = 0; face < 6; face++)
- ctx->Driver.GenerateMipmap(ctx,
- GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face,
- texObj);
- }
- else {
- ctx->Driver.GenerateMipmap(ctx, target, texObj);
- }
- _mesa_unlock_texture(ctx, texObj);
-}
-
-
-#if FEATURE_EXT_framebuffer_blit
-
-static const struct gl_renderbuffer_attachment *
-find_attachment(const struct gl_framebuffer *fb, const struct gl_renderbuffer *rb)
-{
- GLuint i;
- for (i = 0; i < Elements(fb->Attachment); i++) {
- if (fb->Attachment[i].Renderbuffer == rb)
- return &fb->Attachment[i];
- }
- return NULL;
-}
-
-
-
-/**
- * Blit rectangular region, optionally from one framebuffer to another.
- *
- * Note, if the src buffer is multisampled and the dest is not, this is
- * when the samples must be resolved to a single color.
- */
-void GLAPIENTRY
-_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
- GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
- GLbitfield mask, GLenum filter)
-{
- const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT |
- GL_DEPTH_BUFFER_BIT |
- GL_STENCIL_BUFFER_BIT);
- const struct gl_framebuffer *readFb, *drawFb;
- const struct gl_renderbuffer *colorReadRb, *colorDrawRb;
- GET_CURRENT_CONTEXT(ctx);
-
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- FLUSH_VERTICES(ctx, _NEW_BUFFERS);
-
- if (ctx->NewState) {
- _mesa_update_state(ctx);
- }
-
- readFb = ctx->ReadBuffer;
- drawFb = ctx->DrawBuffer;
-
- if (!readFb || !drawFb) {
- /* This will normally never happen but someday we may want to
- * support MakeCurrent() with no drawables.
- */
- return;
- }
-
- /* check for complete framebuffers */
- if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT ||
- readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) {
- _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT,
- "glBlitFramebufferEXT(incomplete draw/read buffers)");
- return;
- }
-
- if (filter != GL_NEAREST && filter != GL_LINEAR) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)");
- return;
- }
-
- if (mask & ~legalMaskBits) {
- _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)");
- return;
- }
-
- /* depth/stencil must be blitted with nearest filtering */
- if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT))
- && filter != GL_NEAREST) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter");
- return;
- }
-
- /* get color read/draw renderbuffers */
- if (mask & GL_COLOR_BUFFER_BIT) {
- colorReadRb = readFb->_ColorReadBuffer;
- colorDrawRb = drawFb->_ColorDrawBuffers[0];
- }
- else {
- colorReadRb = colorDrawRb = NULL;
- }
-
- if (mask & GL_STENCIL_BUFFER_BIT) {
- struct gl_renderbuffer *readRb = readFb->_StencilBuffer;
- struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer;
- if (!readRb ||
- !drawRb ||
- _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) !=
- _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(stencil buffer size mismatch");
- return;
- }
- }
-
- if (mask & GL_DEPTH_BUFFER_BIT) {
- struct gl_renderbuffer *readRb = readFb->_DepthBuffer;
- struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer;
- if (!readRb ||
- !drawRb ||
- _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) !=
- _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(depth buffer size mismatch");
- return;
- }
- }
-
- if (readFb->Visual.samples > 0 &&
- drawFb->Visual.samples > 0 &&
- readFb->Visual.samples != drawFb->Visual.samples) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(mismatched samples");
- return;
- }
-
- /* extra checks for multisample copies... */
- if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) {
- /* src and dest region sizes must be the same */
- if (srcX1 - srcX0 != dstX1 - dstX0 ||
- srcY1 - srcY0 != dstY1 - dstY0) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample region sizes");
- return;
- }
-
- /* color formats must match */
- if (colorReadRb &&
- colorDrawRb &&
- colorReadRb->Format != colorDrawRb->Format) {
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glBlitFramebufferEXT(bad src/dst multisample pixel formats");
- return;
- }
- }
-
- if (!ctx->Extensions.EXT_framebuffer_blit) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT");
- return;
- }
-
- /* Debug code */
- if (DEBUG_BLIT) {
- printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d,"
- " 0x%x, 0x%x)\n",
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, filter);
- if (colorReadRb) {
- const struct gl_renderbuffer_attachment *att;
-
- att = find_attachment(readFb, colorReadRb);
- printf(" Src FBO %u RB %u (%dx%d) ",
- readFb->Name, colorReadRb->Name,
- colorReadRb->Width, colorReadRb->Height);
- if (att && att->Texture) {
- printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
- }
- printf("\n");
-
- att = find_attachment(drawFb, colorDrawRb);
- printf(" Dst FBO %u RB %u (%dx%d) ",
- drawFb->Name, colorDrawRb->Name,
- colorDrawRb->Width, colorDrawRb->Height);
- if (att && att->Texture) {
- printf("Tex %u tgt 0x%x level %u face %u",
- att->Texture->Name,
- att->Texture->Target,
- att->TextureLevel,
- att->CubeMapFace);
- }
- printf("\n");
- }
- }
-
- ASSERT(ctx->Driver.BlitFramebuffer);
- ctx->Driver.BlitFramebuffer(ctx,
- srcX0, srcY0, srcX1, srcY1,
- dstX0, dstY0, dstX1, dstY1,
- mask, filter);
-}
-#endif /* FEATURE_EXT_framebuffer_blit */
-
-#if FEATURE_ARB_geometry_shader4
-void GLAPIENTRY
-_mesa_FramebufferTextureARB(GLenum target, GLenum attachment,
- GLuint texture, GLint level)
-{
- GET_CURRENT_CONTEXT(ctx);
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTextureARB "
- "not implemented!");
-}
-
-void GLAPIENTRY
-_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment,
- GLuint texture, GLint level, GLenum face)
-{
- GET_CURRENT_CONTEXT(ctx);
- _mesa_error(ctx, GL_INVALID_OPERATION,
- "glFramebufferTextureFaceARB "
- "not implemented!");
-}
-#endif /* FEATURE_ARB_geometry_shader4 */
+/* + * Mesa 3-D graphics library + * Version: 7.1 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + + +/* + * GL_EXT/ARB_framebuffer_object extensions + * + * Authors: + * Brian Paul + */ + + +#include "buffers.h" +#include "context.h" +#include "enums.h" +#include "fbobject.h" +#include "formats.h" +#include "framebuffer.h" +#include "hash.h" +#include "macros.h" +#include "mfeatures.h" +#include "mtypes.h" +#include "renderbuffer.h" +#include "state.h" +#include "teximage.h" +#include "texobj.h" + + +/** Set this to 1 to help debug FBO incompleteness problems */ +#define DEBUG_FBO 0 + +/** Set this to 1 to debug/log glBlitFramebuffer() calls */ +#define DEBUG_BLIT 0 + + +/** + * Notes: + * + * None of the GL_EXT_framebuffer_object functions are compiled into + * display lists. + */ + + + +/* + * When glGenRender/FramebuffersEXT() is called we insert pointers to + * these placeholder objects into the hash table. + * Later, when the object ID is first bound, we replace the placeholder + * with the real frame/renderbuffer. + */ +static struct gl_framebuffer DummyFramebuffer; +static struct gl_renderbuffer DummyRenderbuffer; + +/* We bind this framebuffer when applications pass a NULL + * drawable/surface in make current. */ +static struct gl_framebuffer IncompleteFramebuffer; + + +#define IS_CUBE_FACE(TARGET) \ + ((TARGET) >= GL_TEXTURE_CUBE_MAP_POSITIVE_X && \ + (TARGET) <= GL_TEXTURE_CUBE_MAP_NEGATIVE_Z) + + +static void +delete_dummy_renderbuffer(struct gl_renderbuffer *rb) +{ + /* no op */ +} + +static void +delete_dummy_framebuffer(struct gl_framebuffer *fb) +{ + /* no op */ +} + + +void +_mesa_init_fbobjects(struct gl_context *ctx) +{ + _glthread_INIT_MUTEX(DummyFramebuffer.Mutex); + _glthread_INIT_MUTEX(DummyRenderbuffer.Mutex); + _glthread_INIT_MUTEX(IncompleteFramebuffer.Mutex); + DummyFramebuffer.Delete = delete_dummy_framebuffer; + DummyRenderbuffer.Delete = delete_dummy_renderbuffer; + IncompleteFramebuffer.Delete = delete_dummy_framebuffer; +} + +struct gl_framebuffer * +_mesa_get_incomplete_framebuffer(void) +{ + return &IncompleteFramebuffer; +} + +/** + * Helper routine for getting a gl_renderbuffer. + */ +struct gl_renderbuffer * +_mesa_lookup_renderbuffer(struct gl_context *ctx, GLuint id) +{ + struct gl_renderbuffer *rb; + + if (id == 0) + return NULL; + + rb = (struct gl_renderbuffer *) + _mesa_HashLookup(ctx->Shared->RenderBuffers, id); + return rb; +} + + +/** + * Helper routine for getting a gl_framebuffer. + */ +struct gl_framebuffer * +_mesa_lookup_framebuffer(struct gl_context *ctx, GLuint id) +{ + struct gl_framebuffer *fb; + + if (id == 0) + return NULL; + + fb = (struct gl_framebuffer *) + _mesa_HashLookup(ctx->Shared->FrameBuffers, id); + return fb; +} + + +/** + * Mark the given framebuffer as invalid. This will force the + * test for framebuffer completeness to be done before the framebuffer + * is used. + */ +static void +invalidate_framebuffer(struct gl_framebuffer *fb) +{ + fb->_Status = 0; /* "indeterminate" */ +} + + +/** + * Given a GL_*_ATTACHMENTn token, return a pointer to the corresponding + * gl_renderbuffer_attachment object. + * This function is only used for user-created FB objects, not the + * default / window-system FB object. + * If \p attachment is GL_DEPTH_STENCIL_ATTACHMENT, return a pointer to + * the depth buffer attachment point. + */ +struct gl_renderbuffer_attachment * +_mesa_get_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, + GLenum attachment) +{ + GLuint i; + + assert(fb->Name > 0); + + switch (attachment) { + case GL_COLOR_ATTACHMENT0_EXT: + case GL_COLOR_ATTACHMENT1_EXT: + case GL_COLOR_ATTACHMENT2_EXT: + case GL_COLOR_ATTACHMENT3_EXT: + case GL_COLOR_ATTACHMENT4_EXT: + case GL_COLOR_ATTACHMENT5_EXT: + case GL_COLOR_ATTACHMENT6_EXT: + case GL_COLOR_ATTACHMENT7_EXT: + case GL_COLOR_ATTACHMENT8_EXT: + case GL_COLOR_ATTACHMENT9_EXT: + case GL_COLOR_ATTACHMENT10_EXT: + case GL_COLOR_ATTACHMENT11_EXT: + case GL_COLOR_ATTACHMENT12_EXT: + case GL_COLOR_ATTACHMENT13_EXT: + case GL_COLOR_ATTACHMENT14_EXT: + case GL_COLOR_ATTACHMENT15_EXT: + i = attachment - GL_COLOR_ATTACHMENT0_EXT; + if (i >= ctx->Const.MaxColorAttachments) { + return NULL; + } + return &fb->Attachment[BUFFER_COLOR0 + i]; + case GL_DEPTH_STENCIL_ATTACHMENT: + /* fall-through */ + case GL_DEPTH_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_DEPTH_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_DEPTH]; + case GL_STENCIL_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_STENCIL_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_STENCIL]; + default: + return NULL; + } +} + + +/** + * As above, but only used for getting attachments of the default / + * window-system framebuffer (not user-created framebuffer objects). + */ +static struct gl_renderbuffer_attachment * +_mesa_get_fb0_attachment(struct gl_context *ctx, struct gl_framebuffer *fb, + GLenum attachment) +{ + assert(fb->Name == 0); + + switch (attachment) { + case GL_FRONT_LEFT: + return &fb->Attachment[BUFFER_FRONT_LEFT]; + case GL_FRONT_RIGHT: + return &fb->Attachment[BUFFER_FRONT_RIGHT]; + case GL_BACK_LEFT: + return &fb->Attachment[BUFFER_BACK_LEFT]; + case GL_BACK_RIGHT: + return &fb->Attachment[BUFFER_BACK_RIGHT]; + case GL_AUX0: + if (fb->Visual.numAuxBuffers == 1) { + return &fb->Attachment[BUFFER_AUX0]; + } + return NULL; + case GL_DEPTH_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_DEPTH_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_DEPTH]; + case GL_STENCIL_BUFFER: + /* fall-through / new in GL 3.0 */ + case GL_STENCIL_ATTACHMENT_EXT: + return &fb->Attachment[BUFFER_STENCIL]; + default: + return NULL; + } +} + + + +/** + * Remove any texture or renderbuffer attached to the given attachment + * point. Update reference counts, etc. + */ +void +_mesa_remove_attachment(struct gl_context *ctx, + struct gl_renderbuffer_attachment *att) +{ + if (att->Type == GL_TEXTURE) { + ASSERT(att->Texture); + if (ctx->Driver.FinishRenderTexture) { + /* tell driver that we're done rendering to this texture. */ + ctx->Driver.FinishRenderTexture(ctx, att); + } + _mesa_reference_texobj(&att->Texture, NULL); /* unbind */ + ASSERT(!att->Texture); + } + if (att->Type == GL_TEXTURE || att->Type == GL_RENDERBUFFER_EXT) { + ASSERT(!att->Texture); + _mesa_reference_renderbuffer(&att->Renderbuffer, NULL); /* unbind */ + ASSERT(!att->Renderbuffer); + } + att->Type = GL_NONE; + att->Complete = GL_TRUE; +} + + +/** + * Bind a texture object to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_texture_attachment(struct gl_context *ctx, + struct gl_framebuffer *fb, + struct gl_renderbuffer_attachment *att, + struct gl_texture_object *texObj, + GLenum texTarget, GLuint level, GLuint zoffset) +{ + if (att->Texture == texObj) { + /* re-attaching same texture */ + ASSERT(att->Type == GL_TEXTURE); + if (ctx->Driver.FinishRenderTexture) + ctx->Driver.FinishRenderTexture(ctx, att); + } + else { + /* new attachment */ + if (ctx->Driver.FinishRenderTexture && att->Texture) + ctx->Driver.FinishRenderTexture(ctx, att); + _mesa_remove_attachment(ctx, att); + att->Type = GL_TEXTURE; + assert(!att->Texture); + _mesa_reference_texobj(&att->Texture, texObj); + } + + /* always update these fields */ + att->TextureLevel = level; + att->CubeMapFace = _mesa_tex_target_to_face(texTarget); + att->Zoffset = zoffset; + att->Complete = GL_FALSE; + + if (att->Texture->Image[att->CubeMapFace][att->TextureLevel]) { + ctx->Driver.RenderTexture(ctx, fb, att); + } + + invalidate_framebuffer(fb); +} + + +/** + * Bind a renderbuffer to an attachment point. + * The previous binding, if any, will be removed first. + */ +void +_mesa_set_renderbuffer_attachment(struct gl_context *ctx, + struct gl_renderbuffer_attachment *att, + struct gl_renderbuffer *rb) +{ + /* XXX check if re-doing same attachment, exit early */ + _mesa_remove_attachment(ctx, att); + att->Type = GL_RENDERBUFFER_EXT; + att->Texture = NULL; /* just to be safe */ + att->Complete = GL_FALSE; + _mesa_reference_renderbuffer(&att->Renderbuffer, rb); +} + + +/** + * Fallback for ctx->Driver.FramebufferRenderbuffer() + * Attach a renderbuffer object to a framebuffer object. + */ +void +_mesa_framebuffer_renderbuffer(struct gl_context *ctx, + struct gl_framebuffer *fb, + GLenum attachment, struct gl_renderbuffer *rb) +{ + struct gl_renderbuffer_attachment *att; + + _glthread_LOCK_MUTEX(fb->Mutex); + + att = _mesa_get_attachment(ctx, fb, attachment); + ASSERT(att); + if (rb) { + _mesa_set_renderbuffer_attachment(ctx, att, rb); + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { + /* do stencil attachment here (depth already done above) */ + att = _mesa_get_attachment(ctx, fb, GL_STENCIL_ATTACHMENT_EXT); + assert(att); + _mesa_set_renderbuffer_attachment(ctx, att, rb); + } + } + else { + _mesa_remove_attachment(ctx, att); + } + + invalidate_framebuffer(fb); + + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + +/** + * For debug only. + */ +static void +att_incomplete(const char *msg) +{ +#if DEBUG_FBO + _mesa_debug(NULL, "attachment incomplete: %s\n", msg); +#else + (void) msg; +#endif +} + + +/** + * For debug only. + */ +static void +fbo_incomplete(const char *msg, int index) +{ +#if DEBUG_FBO + _mesa_debug(NULL, "FBO Incomplete: %s [%d]\n", msg, index); +#else + (void) msg; + (void) index; +#endif +} + + +/** + * Is the given base format a legal format for a color renderbuffer? + */ +GLboolean +_mesa_is_legal_color_format(const struct gl_context *ctx, GLenum baseFormat) +{ + switch (baseFormat) { + case GL_RGB: + case GL_RGBA: + return GL_TRUE; + case GL_LUMINANCE: + case GL_LUMINANCE_ALPHA: + case GL_INTENSITY: + case GL_ALPHA: + return ctx->Extensions.ARB_framebuffer_object; + case GL_RED: + case GL_RG: + return ctx->Extensions.ARB_texture_rg; + default: + return GL_FALSE; + } +} + + +/** + * Is the given base format a legal format for a depth/stencil renderbuffer? + */ +static GLboolean +is_legal_depth_format(const struct gl_context *ctx, GLenum baseFormat) +{ + switch (baseFormat) { + case GL_DEPTH_COMPONENT: + case GL_DEPTH_STENCIL_EXT: + return GL_TRUE; + default: + return GL_FALSE; + } +} + + +/** + * Test if an attachment point is complete and update its Complete field. + * \param format if GL_COLOR, this is a color attachment point, + * if GL_DEPTH, this is a depth component attachment point, + * if GL_STENCIL, this is a stencil component attachment point. + */ +static void +test_attachment_completeness(const struct gl_context *ctx, GLenum format, + struct gl_renderbuffer_attachment *att) +{ + assert(format == GL_COLOR || format == GL_DEPTH || format == GL_STENCIL); + + /* assume complete */ + att->Complete = GL_TRUE; + + /* Look for reasons why the attachment might be incomplete */ + if (att->Type == GL_TEXTURE) { + const struct gl_texture_object *texObj = att->Texture; + struct gl_texture_image *texImage; + GLenum baseFormat; + + if (!texObj) { + att_incomplete("no texobj"); + att->Complete = GL_FALSE; + return; + } + + texImage = texObj->Image[att->CubeMapFace][att->TextureLevel]; + if (!texImage) { + att_incomplete("no teximage"); + att->Complete = GL_FALSE; + return; + } + if (texImage->Width < 1 || texImage->Height < 1) { + att_incomplete("teximage width/height=0"); + printf("texobj = %u\n", texObj->Name); + printf("level = %d\n", att->TextureLevel); + att->Complete = GL_FALSE; + return; + } + if (texObj->Target == GL_TEXTURE_3D && att->Zoffset >= texImage->Depth) { + att_incomplete("bad z offset"); + att->Complete = GL_FALSE; + return; + } + + baseFormat = _mesa_get_format_base_format(texImage->TexFormat); + + if (format == GL_COLOR) { + if (!_mesa_is_legal_color_format(ctx, baseFormat)) { + att_incomplete("bad format"); + att->Complete = GL_FALSE; + return; + } + if (_mesa_is_format_compressed(texImage->TexFormat)) { + att_incomplete("compressed internalformat"); + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (baseFormat == GL_DEPTH_COMPONENT) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + ctx->Extensions.ARB_depth_texture && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + att_incomplete("bad depth format"); + return; + } + } + else { + ASSERT(format == GL_STENCIL); + if (ctx->Extensions.EXT_packed_depth_stencil && + ctx->Extensions.ARB_depth_texture && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + /* no such thing as stencil-only textures */ + att_incomplete("illegal stencil texture"); + att->Complete = GL_FALSE; + return; + } + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + const GLenum baseFormat = + _mesa_get_format_base_format(att->Renderbuffer->Format); + + ASSERT(att->Renderbuffer); + if (!att->Renderbuffer->InternalFormat || + att->Renderbuffer->Width < 1 || + att->Renderbuffer->Height < 1) { + att_incomplete("0x0 renderbuffer"); + att->Complete = GL_FALSE; + return; + } + if (format == GL_COLOR) { + if (!_mesa_is_legal_color_format(ctx, baseFormat)) { + att_incomplete("bad renderbuffer color format"); + att->Complete = GL_FALSE; + return; + } + } + else if (format == GL_DEPTH) { + if (baseFormat == GL_DEPTH_COMPONENT) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att_incomplete("bad renderbuffer depth format"); + att->Complete = GL_FALSE; + return; + } + } + else { + assert(format == GL_STENCIL); + if (baseFormat == GL_STENCIL_INDEX) { + /* OK */ + } + else if (ctx->Extensions.EXT_packed_depth_stencil && + baseFormat == GL_DEPTH_STENCIL_EXT) { + /* OK */ + } + else { + att->Complete = GL_FALSE; + att_incomplete("bad renderbuffer stencil format"); + return; + } + } + } + else { + ASSERT(att->Type == GL_NONE); + /* complete */ + return; + } +} + + +/** + * Test if the given framebuffer object is complete and update its + * Status field with the results. + * Calls the ctx->Driver.ValidateFramebuffer() function to allow the + * driver to make hardware-specific validation/completeness checks. + * Also update the framebuffer's Width and Height fields if the + * framebuffer is complete. + */ +void +_mesa_test_framebuffer_completeness(struct gl_context *ctx, + struct gl_framebuffer *fb) +{ + GLuint numImages; + GLenum intFormat = GL_NONE; /* color buffers' internal format */ + GLuint minWidth = ~0, minHeight = ~0, maxWidth = 0, maxHeight = 0; + GLint numSamples = -1; + GLint i; + GLuint j; + + assert(fb->Name != 0); + + numImages = 0; + fb->Width = 0; + fb->Height = 0; + + /* Start at -2 to more easily loop over all attachment points. + * -2: depth buffer + * -1: stencil buffer + * >=0: color buffer + */ + for (i = -2; i < (GLint) ctx->Const.MaxColorAttachments; i++) { + struct gl_renderbuffer_attachment *att; + GLenum f; + gl_format mesaFormat; + + /* + * XXX for ARB_fbo, only check color buffers that are named by + * GL_READ_BUFFER and GL_DRAW_BUFFERi. + */ + + /* check for attachment completeness + */ + if (i == -2) { + att = &fb->Attachment[BUFFER_DEPTH]; + test_attachment_completeness(ctx, GL_DEPTH, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("depth attachment incomplete", -1); + return; + } + } + else if (i == -1) { + att = &fb->Attachment[BUFFER_STENCIL]; + test_attachment_completeness(ctx, GL_STENCIL, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("stencil attachment incomplete", -1); + return; + } + } + else { + att = &fb->Attachment[BUFFER_COLOR0 + i]; + test_attachment_completeness(ctx, GL_COLOR, att); + if (!att->Complete) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT_EXT; + fbo_incomplete("color attachment incomplete", i); + return; + } + } + + /* get width, height, format of the renderbuffer/texture + */ + if (att->Type == GL_TEXTURE) { + const struct gl_texture_image *texImg + = att->Texture->Image[att->CubeMapFace][att->TextureLevel]; + minWidth = MIN2(minWidth, texImg->Width); + maxWidth = MAX2(maxWidth, texImg->Width); + minHeight = MIN2(minHeight, texImg->Height); + maxHeight = MAX2(maxHeight, texImg->Height); + f = texImg->_BaseFormat; + mesaFormat = texImg->TexFormat; + numImages++; + if (!_mesa_is_legal_color_format(ctx, f) && + !is_legal_depth_format(ctx, f)) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("texture attachment incomplete", -1); + return; + } + } + else if (att->Type == GL_RENDERBUFFER_EXT) { + minWidth = MIN2(minWidth, att->Renderbuffer->Width); + maxWidth = MAX2(minWidth, att->Renderbuffer->Width); + minHeight = MIN2(minHeight, att->Renderbuffer->Height); + maxHeight = MAX2(minHeight, att->Renderbuffer->Height); + f = att->Renderbuffer->InternalFormat; + mesaFormat = att->Renderbuffer->Format; + numImages++; + } + else { + assert(att->Type == GL_NONE); + continue; + } + + if (numSamples < 0) { + /* first buffer */ + numSamples = att->Renderbuffer->NumSamples; + } + + /* check if integer color */ + fb->_IntegerColor = _mesa_is_format_integer_color(mesaFormat); + + /* Error-check width, height, format, samples + */ + if (numImages == 1) { + /* save format, num samples */ + if (i >= 0) { + intFormat = f; + } + } + else { + if (!ctx->Extensions.ARB_framebuffer_object) { + /* check that width, height, format are same */ + if (minWidth != maxWidth || minHeight != maxHeight) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS_EXT; + fbo_incomplete("width or height mismatch", -1); + return; + } + /* check that all color buffer have same format */ + if (intFormat != GL_NONE && f != intFormat) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_FORMATS_EXT; + fbo_incomplete("format mismatch", -1); + return; + } + } + if (att->Renderbuffer && + att->Renderbuffer->NumSamples != numSamples) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; + fbo_incomplete("inconsistant number of samples", i); + return; + } + + } + } + +#if FEATURE_GL + if (ctx->API == API_OPENGL) { + /* Check that all DrawBuffers are present */ + for (j = 0; j < ctx->Const.MaxDrawBuffers; j++) { + if (fb->ColorDrawBuffer[j] != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = _mesa_get_attachment(ctx, fb, fb->ColorDrawBuffer[j]); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER_EXT; + fbo_incomplete("missing drawbuffer", j); + return; + } + } + } + + /* Check that the ReadBuffer is present */ + if (fb->ColorReadBuffer != GL_NONE) { + const struct gl_renderbuffer_attachment *att + = _mesa_get_attachment(ctx, fb, fb->ColorReadBuffer); + assert(att); + if (att->Type == GL_NONE) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER_EXT; + fbo_incomplete("missing readbuffer", -1); + return; + } + } + } +#else + (void) j; +#endif + + if (numImages == 0) { + fb->_Status = GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT_EXT; + fbo_incomplete("no attachments", -1); + return; + } + + /* Provisionally set status = COMPLETE ... */ + fb->_Status = GL_FRAMEBUFFER_COMPLETE_EXT; + + /* ... but the driver may say the FB is incomplete. + * Drivers will most likely set the status to GL_FRAMEBUFFER_UNSUPPORTED + * if anything. + */ + if (ctx->Driver.ValidateFramebuffer) { + ctx->Driver.ValidateFramebuffer(ctx, fb); + if (fb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + fbo_incomplete("driver marked FBO as incomplete", -1); + } + } + + if (fb->_Status == GL_FRAMEBUFFER_COMPLETE_EXT) { + /* + * Note that if ARB_framebuffer_object is supported and the attached + * renderbuffers/textures are different sizes, the framebuffer + * width/height will be set to the smallest width/height. + */ + fb->Width = minWidth; + fb->Height = minHeight; + + /* finally, update the visual info for the framebuffer */ + _mesa_update_framebuffer_visual(ctx, fb); + } +} + + +GLboolean GLAPIENTRY +_mesa_IsRenderbufferEXT(GLuint renderbuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (renderbuffer) { + struct gl_renderbuffer *rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (rb != NULL && rb != &DummyRenderbuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +void GLAPIENTRY +_mesa_BindRenderbufferEXT(GLenum target, GLuint renderbuffer) +{ + struct gl_renderbuffer *newRb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindRenderbufferEXT(target)"); + return; + } + + /* No need to flush here since the render buffer binding has no + * effect on rendering state. + */ + + if (renderbuffer) { + newRb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (newRb == &DummyRenderbuffer) { + /* ID was reserved, but no real renderbuffer object made yet */ + newRb = NULL; + } + else if (!newRb && ctx->Extensions.ARB_framebuffer_object) { + /* All RB IDs must be Gen'd */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBindRenderbuffer(buffer)"); + return; + } + + if (!newRb) { + /* create new renderbuffer object */ + newRb = ctx->Driver.NewRenderbuffer(ctx, renderbuffer); + if (!newRb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindRenderbufferEXT"); + return; + } + ASSERT(newRb->AllocStorage); + _mesa_HashInsert(ctx->Shared->RenderBuffers, renderbuffer, newRb); + newRb->RefCount = 1; /* referenced by hash table */ + } + } + else { + newRb = NULL; + } + + ASSERT(newRb != &DummyRenderbuffer); + + _mesa_reference_renderbuffer(&ctx->CurrentRenderbuffer, newRb); +} + + +/** + * If the given renderbuffer is anywhere attached to the framebuffer, detach + * the renderbuffer. + * This is used when a renderbuffer object is deleted. + * The spec calls for unbinding. + */ +static void +detach_renderbuffer(struct gl_context *ctx, + struct gl_framebuffer *fb, + struct gl_renderbuffer *rb) +{ + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + if (fb->Attachment[i].Renderbuffer == rb) { + _mesa_remove_attachment(ctx, &fb->Attachment[i]); + } + } + invalidate_framebuffer(fb); +} + + +void GLAPIENTRY +_mesa_DeleteRenderbuffersEXT(GLsizei n, const GLuint *renderbuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (renderbuffers[i] > 0) { + struct gl_renderbuffer *rb; + rb = _mesa_lookup_renderbuffer(ctx, renderbuffers[i]); + if (rb) { + /* check if deleting currently bound renderbuffer object */ + if (rb == ctx->CurrentRenderbuffer) { + /* bind default */ + ASSERT(rb->RefCount >= 2); + _mesa_BindRenderbufferEXT(GL_RENDERBUFFER_EXT, 0); + } + + if (ctx->DrawBuffer->Name) { + detach_renderbuffer(ctx, ctx->DrawBuffer, rb); + } + if (ctx->ReadBuffer->Name && ctx->ReadBuffer != ctx->DrawBuffer) { + detach_renderbuffer(ctx, ctx->ReadBuffer, rb); + } + + /* Remove from hash table immediately, to free the ID. + * But the object will not be freed until it's no longer + * referenced anywhere else. + */ + _mesa_HashRemove(ctx->Shared->RenderBuffers, renderbuffers[i]); + + if (rb != &DummyRenderbuffer) { + /* no longer referenced by hash table */ + _mesa_reference_renderbuffer(&rb, NULL); + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenRenderbuffersEXT(GLsizei n, GLuint *renderbuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenRenderbuffersEXT(n)"); + return; + } + + if (!renderbuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->RenderBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + renderbuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->RenderBuffers, name, &DummyRenderbuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + +/** + * Given an internal format token for a render buffer, return the + * corresponding base format. + * This is very similar to _mesa_base_tex_format() but the set of valid + * internal formats is somewhat different. + * + * \return one of GL_RGB, GL_RGBA, GL_STENCIL_INDEX, GL_DEPTH_COMPONENT + * GL_DEPTH_STENCIL_EXT or zero if error. + * + * XXX in the future when we support red-only and red-green formats + * we'll also return GL_RED and GL_RG. + */ +GLenum +_mesa_base_fbo_format(struct gl_context *ctx, GLenum internalFormat) +{ + switch (internalFormat) { + case GL_ALPHA: + case GL_ALPHA4: + case GL_ALPHA8: + case GL_ALPHA12: + case GL_ALPHA16: + return GL_ALPHA; + case GL_RGB: + case GL_R3_G3_B2: + case GL_RGB4: + case GL_RGB5: + case GL_RGB8: + case GL_RGB10: + case GL_RGB12: + case GL_RGB16: + case GL_SRGB8_EXT: + return GL_RGB; + case GL_RGBA: + case GL_RGBA2: + case GL_RGBA4: + case GL_RGB5_A1: + case GL_RGBA8: + case GL_RGB10_A2: + case GL_RGBA12: + case GL_RGBA16: + case GL_RGBA16_SNORM: + case GL_SRGB8_ALPHA8_EXT: + return GL_RGBA; + case GL_STENCIL_INDEX: + case GL_STENCIL_INDEX1_EXT: + case GL_STENCIL_INDEX4_EXT: + case GL_STENCIL_INDEX8_EXT: + case GL_STENCIL_INDEX16_EXT: + return GL_STENCIL_INDEX; + case GL_DEPTH_COMPONENT: + case GL_DEPTH_COMPONENT16: + case GL_DEPTH_COMPONENT24: + case GL_DEPTH_COMPONENT32: + return GL_DEPTH_COMPONENT; + case GL_DEPTH_STENCIL_EXT: + case GL_DEPTH24_STENCIL8_EXT: + if (ctx->Extensions.EXT_packed_depth_stencil) + return GL_DEPTH_STENCIL_EXT; + else + return 0; + /* XXX add floating point formats eventually */ + default: + return 0; + } +} + + +/** sentinal value, see below */ +#define NO_SAMPLES 1000 + + +/** + * Helper function used by _mesa_RenderbufferStorageEXT() and + * _mesa_RenderbufferStorageMultisample(). + * samples will be NO_SAMPLES if called by _mesa_RenderbufferStorageEXT(). + */ +static void +renderbuffer_storage(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height, GLsizei samples) +{ + const char *func = samples == NO_SAMPLES ? + "glRenderbufferStorage" : "RenderbufferStorageMultisample"; + struct gl_renderbuffer *rb; + GLenum baseFormat; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s(target)", func); + return; + } + + baseFormat = _mesa_base_fbo_format(ctx, internalFormat); + if (baseFormat == 0) { + _mesa_error(ctx, GL_INVALID_ENUM, "%s(internalFormat)", func); + return; + } + + if (width < 1 || width > (GLsizei) ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(width)", func); + return; + } + + if (height < 1 || height > (GLsizei) ctx->Const.MaxRenderbufferSize) { + _mesa_error(ctx, GL_INVALID_VALUE, "%s(height)", func); + return; + } + + if (samples == NO_SAMPLES) { + /* NumSamples == 0 indicates non-multisampling */ + samples = 0; + } + else if (samples > (GLsizei) ctx->Const.MaxSamples) { + /* note: driver may choose to use more samples than what's requested */ + _mesa_error(ctx, GL_INVALID_VALUE, "%s(samples)", func); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, "%s", func); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (rb->InternalFormat == internalFormat && + rb->Width == (GLuint) width && + rb->Height == (GLuint) height) { + /* no change in allocation needed */ + return; + } + + /* These MUST get set by the AllocStorage func */ + rb->Format = MESA_FORMAT_NONE; + rb->NumSamples = samples; + + /* Now allocate the storage */ + ASSERT(rb->AllocStorage); + if (rb->AllocStorage(ctx, rb, internalFormat, width, height)) { + /* No error - check/set fields now */ + assert(rb->Format != MESA_FORMAT_NONE); + assert(rb->Width == (GLuint) width); + assert(rb->Height == (GLuint) height); + rb->InternalFormat = internalFormat; + rb->_BaseFormat = baseFormat; + assert(rb->_BaseFormat != 0); + } + else { + /* Probably ran out of memory - clear the fields */ + rb->Width = 0; + rb->Height = 0; + rb->Format = MESA_FORMAT_NONE; + rb->InternalFormat = GL_NONE; + rb->_BaseFormat = GL_NONE; + rb->NumSamples = 0; + } + + /* + test_framebuffer_completeness(ctx, fb); + */ + /* XXX if this renderbuffer is attached anywhere, invalidate attachment + * points??? + */ +} + + +#if FEATURE_OES_EGL_image +void GLAPIENTRY +_mesa_EGLImageTargetRenderbufferStorageOES(GLenum target, GLeglImageOES image) +{ + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.OES_EGL_image) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glEGLImageTargetRenderbufferStorageOES(unsupported)"); + return; + } + + if (target != GL_RENDERBUFFER) { + _mesa_error(ctx, GL_INVALID_ENUM, + "EGLImageTargetRenderbufferStorageOES"); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "EGLImageTargetRenderbufferStorageOES"); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + ctx->Driver.EGLImageTargetRenderbufferStorage(ctx, rb, image); +} +#endif + + +/** + * Helper function for _mesa_GetRenderbufferParameterivEXT() and + * _mesa_GetFramebufferAttachmentParameterivEXT() + * We have to be careful to respect the base format. For example, if a + * renderbuffer/texture was created with internalFormat=GL_RGB but the + * driver actually chose a GL_RGBA format, when the user queries ALPHA_SIZE + * we need to return zero. + */ +static GLint +get_component_bits(GLenum pname, GLenum baseFormat, gl_format format) +{ + switch (pname) { + case GL_RENDERBUFFER_RED_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA || + baseFormat == GL_RG || baseFormat == GL_RED) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA || baseFormat == GL_RG) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: + if (baseFormat == GL_RGB || baseFormat == GL_RGBA) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: + if (baseFormat == GL_RGBA || baseFormat == GL_ALPHA || + baseFormat == GL_LUMINANCE_ALPHA) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: + if (baseFormat == GL_DEPTH_COMPONENT || baseFormat == GL_DEPTH_STENCIL) + return _mesa_get_format_bits(format, pname); + else + return 0; + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: + if (baseFormat == GL_STENCIL_INDEX || baseFormat == GL_DEPTH_STENCIL) + return _mesa_get_format_bits(format, pname); + else + return 0; + default: + return 0; + } +} + + + +void GLAPIENTRY +_mesa_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height) +{ + /* GL_ARB_fbo says calling this function is equivalent to calling + * glRenderbufferStorageMultisample() with samples=0. We pass in + * a token value here just for error reporting purposes. + */ + renderbuffer_storage(target, internalFormat, width, height, NO_SAMPLES); +} + + +void GLAPIENTRY +_mesa_RenderbufferStorageMultisample(GLenum target, GLsizei samples, + GLenum internalFormat, + GLsizei width, GLsizei height) +{ + renderbuffer_storage(target, internalFormat, width, height, samples); +} + + +/** + * OpenGL ES version of glRenderBufferStorage. + */ +void GLAPIENTRY +_es_RenderbufferStorageEXT(GLenum target, GLenum internalFormat, + GLsizei width, GLsizei height) +{ + switch (internalFormat) { + case GL_RGB565: + /* XXX this confuses GL_RENDERBUFFER_INTERNAL_FORMAT_OES */ + /* choose a closest format */ + internalFormat = GL_RGB5; + break; + default: + break; + } + + renderbuffer_storage(target, internalFormat, width, height, 0); +} + + +void GLAPIENTRY +_mesa_GetRenderbufferParameterivEXT(GLenum target, GLenum pname, GLint *params) +{ + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (target != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } + + rb = ctx->CurrentRenderbuffer; + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetRenderbufferParameterivEXT"); + return; + } + + /* No need to flush here since we're just quering state which is + * not effected by rendering. + */ + + switch (pname) { + case GL_RENDERBUFFER_WIDTH_EXT: + *params = rb->Width; + return; + case GL_RENDERBUFFER_HEIGHT_EXT: + *params = rb->Height; + return; + case GL_RENDERBUFFER_INTERNAL_FORMAT_EXT: + *params = rb->InternalFormat; + return; + case GL_RENDERBUFFER_RED_SIZE_EXT: + case GL_RENDERBUFFER_GREEN_SIZE_EXT: + case GL_RENDERBUFFER_BLUE_SIZE_EXT: + case GL_RENDERBUFFER_ALPHA_SIZE_EXT: + case GL_RENDERBUFFER_DEPTH_SIZE_EXT: + case GL_RENDERBUFFER_STENCIL_SIZE_EXT: + *params = get_component_bits(pname, rb->_BaseFormat, rb->Format); + break; + case GL_RENDERBUFFER_SAMPLES: + if (ctx->Extensions.ARB_framebuffer_object) { + *params = rb->NumSamples; + break; + } + /* fallthrough */ + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetRenderbufferParameterivEXT(target)"); + return; + } +} + + +GLboolean GLAPIENTRY +_mesa_IsFramebufferEXT(GLuint framebuffer) +{ + GET_CURRENT_CONTEXT(ctx); + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE); + if (framebuffer) { + struct gl_framebuffer *rb = _mesa_lookup_framebuffer(ctx, framebuffer); + if (rb != NULL && rb != &DummyFramebuffer) + return GL_TRUE; + } + return GL_FALSE; +} + + +/** + * Check if any of the attachments of the given framebuffer are textures + * (render to texture). Call ctx->Driver.RenderTexture() for such + * attachments. + */ +static void +check_begin_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) +{ + GLuint i; + ASSERT(ctx->Driver.RenderTexture); + + if (fb->Name == 0) + return; /* can't render to texture with winsys framebuffers */ + + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + struct gl_texture_object *texObj = att->Texture; + if (texObj + && texObj->Image[att->CubeMapFace][att->TextureLevel]) { + ctx->Driver.RenderTexture(ctx, fb, att); + } + } +} + + +/** + * Examine all the framebuffer's attachments to see if any are textures. + * If so, call ctx->Driver.FinishRenderTexture() for each texture to + * notify the device driver that the texture image may have changed. + */ +static void +check_end_texture_render(struct gl_context *ctx, struct gl_framebuffer *fb) +{ + if (fb->Name == 0) + return; /* can't render to texture with winsys framebuffers */ + + if (ctx->Driver.FinishRenderTexture) { + GLuint i; + for (i = 0; i < BUFFER_COUNT; i++) { + struct gl_renderbuffer_attachment *att = fb->Attachment + i; + if (att->Texture && att->Renderbuffer) { + ctx->Driver.FinishRenderTexture(ctx, att); + } + } + } +} + + +void GLAPIENTRY +_mesa_BindFramebufferEXT(GLenum target, GLuint framebuffer) +{ + struct gl_framebuffer *newDrawFb, *newReadFb; + struct gl_framebuffer *oldDrawFb, *oldReadFb; + GLboolean bindReadBuf, bindDrawBuf; + GET_CURRENT_CONTEXT(ctx); + +#ifdef DEBUG + if (ctx->Extensions.ARB_framebuffer_object) { + ASSERT(ctx->Extensions.EXT_framebuffer_object); + ASSERT(ctx->Extensions.EXT_framebuffer_blit); + } +#endif + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (!ctx->Extensions.EXT_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBindFramebufferEXT(unsupported)"); + return; + } + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_FALSE; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + bindDrawBuf = GL_FALSE; + bindReadBuf = GL_TRUE; + break; +#endif + case GL_FRAMEBUFFER_EXT: + bindDrawBuf = GL_TRUE; + bindReadBuf = GL_TRUE; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glBindFramebufferEXT(target)"); + return; + } + + if (framebuffer) { + /* Binding a user-created framebuffer object */ + newDrawFb = _mesa_lookup_framebuffer(ctx, framebuffer); + if (newDrawFb == &DummyFramebuffer) { + /* ID was reserved, but no real framebuffer object made yet */ + newDrawFb = NULL; + } + else if (!newDrawFb && ctx->Extensions.ARB_framebuffer_object) { + /* All FBO IDs must be Gen'd */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFramebuffer(buffer)"); + return; + } + + if (!newDrawFb) { + /* create new framebuffer object */ + newDrawFb = ctx->Driver.NewFramebuffer(ctx, framebuffer); + if (!newDrawFb) { + _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFramebufferEXT"); + return; + } + _mesa_HashInsert(ctx->Shared->FrameBuffers, framebuffer, newDrawFb); + } + newReadFb = newDrawFb; + } + else { + /* Binding the window system framebuffer (which was originally set + * with MakeCurrent). + */ + newDrawFb = ctx->WinSysDrawBuffer; + newReadFb = ctx->WinSysReadBuffer; + } + + ASSERT(newDrawFb); + ASSERT(newDrawFb != &DummyFramebuffer); + + /* save pointers to current/old framebuffers */ + oldDrawFb = ctx->DrawBuffer; + oldReadFb = ctx->ReadBuffer; + + /* check if really changing bindings */ + if (oldDrawFb == newDrawFb) + bindDrawBuf = GL_FALSE; + if (oldReadFb == newReadFb) + bindReadBuf = GL_FALSE; + + /* + * OK, now bind the new Draw/Read framebuffers, if they're changing. + * + * We also check if we're beginning and/or ending render-to-texture. + * When a framebuffer with texture attachments is unbound, call + * ctx->Driver.FinishRenderTexture(). + * When a framebuffer with texture attachments is bound, call + * ctx->Driver.RenderTexture(). + * + * Note that if the ReadBuffer has texture attachments we don't consider + * that a render-to-texture case. + */ + if (bindReadBuf) { + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + /* check if old readbuffer was render-to-texture */ + check_end_texture_render(ctx, oldReadFb); + + _mesa_reference_framebuffer(&ctx->ReadBuffer, newReadFb); + } + + if (bindDrawBuf) { + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + /* check if old read/draw buffers were render-to-texture */ + if (!bindReadBuf) + check_end_texture_render(ctx, oldReadFb); + + if (oldDrawFb != oldReadFb) + check_end_texture_render(ctx, oldDrawFb); + + /* check if newly bound framebuffer has any texture attachments */ + check_begin_texture_render(ctx, newDrawFb); + + _mesa_reference_framebuffer(&ctx->DrawBuffer, newDrawFb); + } + + if ((bindDrawBuf || bindReadBuf) && ctx->Driver.BindFramebuffer) { + ctx->Driver.BindFramebuffer(ctx, target, newDrawFb, newReadFb); + } +} + + +void GLAPIENTRY +_mesa_DeleteFramebuffersEXT(GLsizei n, const GLuint *framebuffers) +{ + GLint i; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + for (i = 0; i < n; i++) { + if (framebuffers[i] > 0) { + struct gl_framebuffer *fb; + fb = _mesa_lookup_framebuffer(ctx, framebuffers[i]); + if (fb) { + ASSERT(fb == &DummyFramebuffer || fb->Name == framebuffers[i]); + + /* check if deleting currently bound framebuffer object */ + if (ctx->Extensions.EXT_framebuffer_blit) { + /* separate draw/read binding points */ + if (fb == ctx->DrawBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_DRAW_FRAMEBUFFER_EXT, 0); + } + if (fb == ctx->ReadBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_READ_FRAMEBUFFER_EXT, 0); + } + } + else { + /* only one binding point for read/draw buffers */ + if (fb == ctx->DrawBuffer || fb == ctx->ReadBuffer) { + /* bind default */ + ASSERT(fb->RefCount >= 2); + _mesa_BindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + } + } + + /* remove from hash table immediately, to free the ID */ + _mesa_HashRemove(ctx->Shared->FrameBuffers, framebuffers[i]); + + if (fb != &DummyFramebuffer) { + /* But the object will not be freed until it's no longer + * bound in any context. + */ + _mesa_reference_framebuffer(&fb, NULL); + } + } + } + } +} + + +void GLAPIENTRY +_mesa_GenFramebuffersEXT(GLsizei n, GLuint *framebuffers) +{ + GET_CURRENT_CONTEXT(ctx); + GLuint first; + GLint i; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + if (n < 0) { + _mesa_error(ctx, GL_INVALID_VALUE, "glGenFramebuffersEXT(n)"); + return; + } + + if (!framebuffers) + return; + + first = _mesa_HashFindFreeKeyBlock(ctx->Shared->FrameBuffers, n); + + for (i = 0; i < n; i++) { + GLuint name = first + i; + framebuffers[i] = name; + /* insert dummy placeholder into hash table */ + _glthread_LOCK_MUTEX(ctx->Shared->Mutex); + _mesa_HashInsert(ctx->Shared->FrameBuffers, name, &DummyFramebuffer); + _glthread_UNLOCK_MUTEX(ctx->Shared->Mutex); + } +} + + + +GLenum GLAPIENTRY +_mesa_CheckFramebufferStatusEXT(GLenum target) +{ + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, 0); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; + } + buffer = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; + } + buffer = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + buffer = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, "glCheckFramebufferStatus(target)"); + return 0; /* formerly GL_FRAMEBUFFER_STATUS_ERROR_EXT */ + } + + if (buffer->Name == 0) { + /* The window system / default framebuffer is always complete */ + return GL_FRAMEBUFFER_COMPLETE_EXT; + } + + /* No need to flush here */ + + if (buffer->_Status != GL_FRAMEBUFFER_COMPLETE) { + _mesa_test_framebuffer_completeness(ctx, buffer); + } + + return buffer->_Status; +} + + + +/** + * Common code called by glFramebufferTexture1D/2D/3DEXT(). + */ +static void +framebuffer_texture(struct gl_context *ctx, const char *caller, GLenum target, + GLenum attachment, GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + struct gl_renderbuffer_attachment *att; + struct gl_texture_object *texObj = NULL; + struct gl_framebuffer *fb; + GLboolean error = GL_FALSE; + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { + case GL_READ_FRAMEBUFFER_EXT: + error = !ctx->Extensions.EXT_framebuffer_blit; + fb = ctx->ReadBuffer; + break; + case GL_DRAW_FRAMEBUFFER_EXT: + error = !ctx->Extensions.EXT_framebuffer_blit; + /* fall-through */ + case GL_FRAMEBUFFER_EXT: + fb = ctx->DrawBuffer; + break; + default: + error = GL_TRUE; + } + + if (error) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%sEXT(target=0x%x)", caller, target); + return; + } + + ASSERT(fb); + + /* check framebuffer binding */ + if (fb->Name == 0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT", caller); + return; + } + + + /* The textarget, level, and zoffset parameters are only validated if + * texture is non-zero. + */ + if (texture) { + GLboolean err = GL_TRUE; + + texObj = _mesa_lookup_texture(ctx, texture); + if (texObj != NULL) { + if (textarget == 0) { + /* XXX what's the purpose of this? */ + err = (texObj->Target != GL_TEXTURE_3D) && + (texObj->Target != GL_TEXTURE_1D_ARRAY_EXT) && + (texObj->Target != GL_TEXTURE_2D_ARRAY_EXT); + } + else { + err = (texObj->Target == GL_TEXTURE_CUBE_MAP) + ? !IS_CUBE_FACE(textarget) + : (texObj->Target != textarget); + } + } + else { + /* can't render to a non-existant texture */ + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT(non existant texture)", + caller); + return; + } + + if (err) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture%sEXT(texture target mismatch)", + caller); + return; + } + + if (texObj->Target == GL_TEXTURE_3D) { + const GLint maxSize = 1 << (ctx->Const.Max3DTextureLevels - 1); + if (zoffset < 0 || zoffset >= maxSize) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(zoffset)", caller); + return; + } + } + else if ((texObj->Target == GL_TEXTURE_1D_ARRAY_EXT) || + (texObj->Target == GL_TEXTURE_2D_ARRAY_EXT)) { + if (zoffset < 0 || zoffset >= ctx->Const.MaxArrayTextureLayers) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(layer)", caller); + return; + } + } + + if ((level < 0) || + (level >= _mesa_max_texture_levels(ctx, texObj->Target))) { + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferTexture%sEXT(level)", caller); + return; + } + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture%sEXT(attachment)", caller); + return; + } + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + _glthread_LOCK_MUTEX(fb->Mutex); + if (texObj) { + _mesa_set_texture_attachment(ctx, fb, att, texObj, textarget, + level, zoffset); + /* Set the render-to-texture flag. We'll check this flag in + * glTexImage() and friends to determine if we need to revalidate + * any FBOs that might be rendering into this texture. + * This flag never gets cleared since it's non-trivial to determine + * when all FBOs might be done rendering to this texture. That's OK + * though since it's uncommon to render to a texture then repeatedly + * call glTexImage() to change images in the texture. + */ + texObj->_RenderToTexture = GL_TRUE; + } + else { + _mesa_remove_attachment(ctx, att); + } + + invalidate_framebuffer(fb); + + _glthread_UNLOCK_MUTEX(fb->Mutex); +} + + + +void GLAPIENTRY +_mesa_FramebufferTexture1DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && (textarget != GL_TEXTURE_1D)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture1DEXT(textarget)"); + return; + } + + framebuffer_texture(ctx, "1D", target, attachment, textarget, texture, + level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture2DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && + (textarget != GL_TEXTURE_2D) && + (textarget != GL_TEXTURE_RECTANGLE_ARB) && + (!IS_CUBE_FACE(textarget))) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTexture2DEXT(textarget=0x%x)", textarget); + return; + } + + framebuffer_texture(ctx, "2D", target, attachment, textarget, texture, + level, 0); +} + + +void GLAPIENTRY +_mesa_FramebufferTexture3DEXT(GLenum target, GLenum attachment, + GLenum textarget, GLuint texture, + GLint level, GLint zoffset) +{ + GET_CURRENT_CONTEXT(ctx); + + if ((texture != 0) && (textarget != GL_TEXTURE_3D)) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferTexture3DEXT(textarget)"); + return; + } + + framebuffer_texture(ctx, "3D", target, attachment, textarget, texture, + level, zoffset); +} + + +void GLAPIENTRY +_mesa_FramebufferTextureLayerEXT(GLenum target, GLenum attachment, + GLuint texture, GLint level, GLint layer) +{ + GET_CURRENT_CONTEXT(ctx); + + framebuffer_texture(ctx, "Layer", target, attachment, 0, texture, + level, layer); +} + + +void GLAPIENTRY +_mesa_FramebufferRenderbufferEXT(GLenum target, GLenum attachment, + GLenum renderbufferTarget, + GLuint renderbuffer) +{ + struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *fb; + struct gl_renderbuffer *rb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + fb = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + fb = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + fb = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(target)"); + return; + } + + if (renderbufferTarget != GL_RENDERBUFFER_EXT) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(renderbufferTarget)"); + return; + } + + if (fb->Name == 0) { + /* Can't attach new renderbuffers to a window system framebuffer */ + _mesa_error(ctx, GL_INVALID_OPERATION, "glFramebufferRenderbufferEXT"); + return; + } + + att = _mesa_get_attachment(ctx, fb, attachment); + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glFramebufferRenderbufferEXT(invalid attachment %s)", + _mesa_lookup_enum_by_nr(attachment)); + return; + } + + if (renderbuffer) { + rb = _mesa_lookup_renderbuffer(ctx, renderbuffer); + if (!rb) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferRenderbufferEXT(non-existant" + " renderbuffer %u)", renderbuffer); + return; + } + else if (rb == &DummyRenderbuffer) { + /* This is what NVIDIA does */ + _mesa_error(ctx, GL_INVALID_VALUE, + "glFramebufferRenderbufferEXT(renderbuffer %u)", + renderbuffer); + return; + } + } + else { + /* remove renderbuffer attachment */ + rb = NULL; + } + + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT && + rb && rb->Format != MESA_FORMAT_NONE) { + /* make sure the renderbuffer is a depth/stencil format */ + const GLenum baseFormat = _mesa_get_format_base_format(rb->Format); + if (baseFormat != GL_DEPTH_STENCIL) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferRenderbufferEXT(renderbuffer" + " is not DEPTH_STENCIL format)"); + return; + } + } + + + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + assert(ctx->Driver.FramebufferRenderbuffer); + ctx->Driver.FramebufferRenderbuffer(ctx, fb, attachment, rb); + + /* Some subsequent GL commands may depend on the framebuffer's visual + * after the binding is updated. Update visual info now. + */ + _mesa_update_framebuffer_visual(ctx, fb); +} + + +void GLAPIENTRY +_mesa_GetFramebufferAttachmentParameterivEXT(GLenum target, GLenum attachment, + GLenum pname, GLint *params) +{ + const struct gl_renderbuffer_attachment *att; + struct gl_framebuffer *buffer; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + + switch (target) { +#if FEATURE_EXT_framebuffer_blit + case GL_DRAW_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + buffer = ctx->DrawBuffer; + break; + case GL_READ_FRAMEBUFFER_EXT: + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + buffer = ctx->ReadBuffer; + break; +#endif + case GL_FRAMEBUFFER_EXT: + buffer = ctx->DrawBuffer; + break; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(target)"); + return; + } + + if (buffer->Name == 0) { + /* the default / window-system FBO */ + att = _mesa_get_fb0_attachment(ctx, buffer, attachment); + } + else { + /* user-created framebuffer FBO */ + att = _mesa_get_attachment(ctx, buffer, attachment); + } + + if (att == NULL) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(attachment)"); + return; + } + + if (attachment == GL_DEPTH_STENCIL_ATTACHMENT) { + /* the depth and stencil attachments must point to the same buffer */ + const struct gl_renderbuffer_attachment *depthAtt, *stencilAtt; + depthAtt = _mesa_get_attachment(ctx, buffer, GL_DEPTH_ATTACHMENT); + stencilAtt = _mesa_get_attachment(ctx, buffer, GL_STENCIL_ATTACHMENT); + if (depthAtt->Renderbuffer != stencilAtt->Renderbuffer) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGetFramebufferAttachmentParameterivEXT(DEPTH/STENCIL" + " attachments differ)"); + return; + } + } + + /* No need to flush here */ + + switch (pname) { + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE_EXT: + *params = buffer->Name == 0 ? GL_FRAMEBUFFER_DEFAULT : att->Type; + return; + case GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME_EXT: + if (att->Type == GL_RENDERBUFFER_EXT) { + *params = att->Renderbuffer->Name; + } + else if (att->Type == GL_TEXTURE) { + *params = att->Texture->Name; + } + else { + assert(att->Type == GL_NONE); + *params = 0; + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL_EXT: + if (att->Type == GL_TEXTURE) { + *params = att->TextureLevel; + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE_EXT: + if (att->Type == GL_TEXTURE) { + if (att->Texture && att->Texture->Target == GL_TEXTURE_CUBE_MAP) { + *params = GL_TEXTURE_CUBE_MAP_POSITIVE_X + att->CubeMapFace; + } + else { + *params = 0; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_EXT: + if (att->Type == GL_TEXTURE) { + if (att->Texture && att->Texture->Target == GL_TEXTURE_3D) { + *params = att->Zoffset; + } + else { + *params = 0; + } + } + else { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + else { + *params = _mesa_get_format_color_encoding(att->Renderbuffer->Format); + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + return; + } + else { + gl_format format = att->Renderbuffer->Format; + if (format == MESA_FORMAT_CI8 || format == MESA_FORMAT_S8) { + /* special cases */ + *params = GL_INDEX; + } + else { + *params = _mesa_get_format_datatype(format); + } + } + return; + case GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE: + case GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE: + if (!ctx->Extensions.ARB_framebuffer_object) { + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + } + else if (att->Texture) { + const struct gl_texture_image *texImage = + _mesa_select_tex_image(ctx, att->Texture, att->Texture->Target, + att->TextureLevel); + if (texImage) { + *params = get_component_bits(pname, texImage->_BaseFormat, + texImage->TexFormat); + } + else { + *params = 0; + } + } + else if (att->Renderbuffer) { + *params = get_component_bits(pname, att->Renderbuffer->_BaseFormat, + att->Renderbuffer->Format); + } + else { + *params = 0; + } + return; + default: + _mesa_error(ctx, GL_INVALID_ENUM, + "glGetFramebufferAttachmentParameterivEXT(pname)"); + return; + } +} + + +void GLAPIENTRY +_mesa_GenerateMipmapEXT(GLenum target) +{ + struct gl_texture_object *texObj; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + switch (target) { + case GL_TEXTURE_1D: + case GL_TEXTURE_2D: + case GL_TEXTURE_3D: + case GL_TEXTURE_CUBE_MAP: + /* OK, legal value */ + break; + default: + /* XXX need to implement GL_TEXTURE_1D_ARRAY and GL_TEXTURE_2D_ARRAY */ + _mesa_error(ctx, GL_INVALID_ENUM, "glGenerateMipmapEXT(target)"); + return; + } + + texObj = _mesa_get_current_tex_object(ctx, target); + + if (texObj->BaseLevel >= texObj->MaxLevel) { + /* nothing to do */ + return; + } + + if (texObj->Target == GL_TEXTURE_CUBE_MAP && + !_mesa_cube_complete(texObj)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glGenerateMipmap(incomplete cube map)"); + return; + } + + _mesa_lock_texture(ctx, texObj); + if (target == GL_TEXTURE_CUBE_MAP) { + GLuint face; + for (face = 0; face < 6; face++) + ctx->Driver.GenerateMipmap(ctx, + GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB + face, + texObj); + } + else { + ctx->Driver.GenerateMipmap(ctx, target, texObj); + } + _mesa_unlock_texture(ctx, texObj); +} + + +#if FEATURE_EXT_framebuffer_blit + +static const struct gl_renderbuffer_attachment * +find_attachment(const struct gl_framebuffer *fb, const struct gl_renderbuffer *rb) +{ + GLuint i; + for (i = 0; i < Elements(fb->Attachment); i++) { + if (fb->Attachment[i].Renderbuffer == rb) + return &fb->Attachment[i]; + } + return NULL; +} + + + +/** + * Blit rectangular region, optionally from one framebuffer to another. + * + * Note, if the src buffer is multisampled and the dest is not, this is + * when the samples must be resolved to a single color. + */ +void GLAPIENTRY +_mesa_BlitFramebufferEXT(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, + GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, + GLbitfield mask, GLenum filter) +{ + const GLbitfield legalMaskBits = (GL_COLOR_BUFFER_BIT | + GL_DEPTH_BUFFER_BIT | + GL_STENCIL_BUFFER_BIT); + const struct gl_framebuffer *readFb, *drawFb; + const struct gl_renderbuffer *colorReadRb, *colorDrawRb; + GET_CURRENT_CONTEXT(ctx); + + ASSERT_OUTSIDE_BEGIN_END(ctx); + FLUSH_VERTICES(ctx, _NEW_BUFFERS); + + if (ctx->NewState) { + _mesa_update_state(ctx); + } + + readFb = ctx->ReadBuffer; + drawFb = ctx->DrawBuffer; + + if (!readFb || !drawFb) { + /* This will normally never happen but someday we may want to + * support MakeCurrent() with no drawables. + */ + return; + } + + /* check for complete framebuffers */ + if (drawFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT || + readFb->_Status != GL_FRAMEBUFFER_COMPLETE_EXT) { + _mesa_error(ctx, GL_INVALID_FRAMEBUFFER_OPERATION_EXT, + "glBlitFramebufferEXT(incomplete draw/read buffers)"); + return; + } + + if (filter != GL_NEAREST && filter != GL_LINEAR) { + _mesa_error(ctx, GL_INVALID_ENUM, "glBlitFramebufferEXT(filter)"); + return; + } + + if (mask & ~legalMaskBits) { + _mesa_error( ctx, GL_INVALID_VALUE, "glBlitFramebufferEXT(mask)"); + return; + } + + /* depth/stencil must be blitted with nearest filtering */ + if ((mask & (GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT)) + && filter != GL_NEAREST) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth/stencil requires GL_NEAREST filter"); + return; + } + + /* get color read/draw renderbuffers */ + if (mask & GL_COLOR_BUFFER_BIT) { + colorReadRb = readFb->_ColorReadBuffer; + colorDrawRb = drawFb->_ColorDrawBuffers[0]; + } + else { + colorReadRb = colorDrawRb = NULL; + } + + if (mask & GL_STENCIL_BUFFER_BIT) { + struct gl_renderbuffer *readRb = readFb->_StencilBuffer; + struct gl_renderbuffer *drawRb = drawFb->_StencilBuffer; + if (!readRb || + !drawRb || + _mesa_get_format_bits(readRb->Format, GL_STENCIL_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_STENCIL_BITS)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(stencil buffer size mismatch"); + return; + } + } + + if (mask & GL_DEPTH_BUFFER_BIT) { + struct gl_renderbuffer *readRb = readFb->_DepthBuffer; + struct gl_renderbuffer *drawRb = drawFb->_DepthBuffer; + if (!readRb || + !drawRb || + _mesa_get_format_bits(readRb->Format, GL_DEPTH_BITS) != + _mesa_get_format_bits(drawRb->Format, GL_DEPTH_BITS)) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(depth buffer size mismatch"); + return; + } + } + + if (readFb->Visual.samples > 0 && + drawFb->Visual.samples > 0 && + readFb->Visual.samples != drawFb->Visual.samples) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(mismatched samples"); + return; + } + + /* extra checks for multisample copies... */ + if (readFb->Visual.samples > 0 || drawFb->Visual.samples > 0) { + /* src and dest region sizes must be the same */ + if (srcX1 - srcX0 != dstX1 - dstX0 || + srcY1 - srcY0 != dstY1 - dstY0) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(bad src/dst multisample region sizes"); + return; + } + + /* color formats must match */ + if (colorReadRb && + colorDrawRb && + colorReadRb->Format != colorDrawRb->Format) { + _mesa_error(ctx, GL_INVALID_OPERATION, + "glBlitFramebufferEXT(bad src/dst multisample pixel formats"); + return; + } + } + + if (!ctx->Extensions.EXT_framebuffer_blit) { + _mesa_error(ctx, GL_INVALID_OPERATION, "glBlitFramebufferEXT"); + return; + } + + /* Debug code */ + if (DEBUG_BLIT) { + printf("glBlitFramebuffer(%d, %d, %d, %d, %d, %d, %d, %d," + " 0x%x, 0x%x)\n", + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, filter); + if (colorReadRb) { + const struct gl_renderbuffer_attachment *att; + + att = find_attachment(readFb, colorReadRb); + printf(" Src FBO %u RB %u (%dx%d) ", + readFb->Name, colorReadRb->Name, + colorReadRb->Width, colorReadRb->Height); + if (att && att->Texture) { + printf("Tex %u tgt 0x%x level %u face %u", + att->Texture->Name, + att->Texture->Target, + att->TextureLevel, + att->CubeMapFace); + } + printf("\n"); + + att = find_attachment(drawFb, colorDrawRb); + printf(" Dst FBO %u RB %u (%dx%d) ", + drawFb->Name, colorDrawRb->Name, + colorDrawRb->Width, colorDrawRb->Height); + if (att && att->Texture) { + printf("Tex %u tgt 0x%x level %u face %u", + att->Texture->Name, + att->Texture->Target, + att->TextureLevel, + att->CubeMapFace); + } + printf("\n"); + } + } + + ASSERT(ctx->Driver.BlitFramebuffer); + ctx->Driver.BlitFramebuffer(ctx, + srcX0, srcY0, srcX1, srcY1, + dstX0, dstY0, dstX1, dstY1, + mask, filter); +} +#endif /* FEATURE_EXT_framebuffer_blit */ + +#if FEATURE_ARB_geometry_shader4 +void GLAPIENTRY +_mesa_FramebufferTextureARB(GLenum target, GLenum attachment, + GLuint texture, GLint level) +{ + GET_CURRENT_CONTEXT(ctx); + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTextureARB " + "not implemented!"); +} + +void GLAPIENTRY +_mesa_FramebufferTextureFaceARB(GLenum target, GLenum attachment, + GLuint texture, GLint level, GLenum face) +{ + GET_CURRENT_CONTEXT(ctx); + _mesa_error(ctx, GL_INVALID_OPERATION, + "glFramebufferTextureFaceARB " + "not implemented!"); +} +#endif /* FEATURE_ARB_geometry_shader4 */ diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h index bcae84433..8d2030e9c 100644 --- a/mesalib/src/mesa/main/mtypes.h +++ b/mesalib/src/mesa/main/mtypes.h @@ -1,3317 +1,3318 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.7
- *
- * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
- * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/**
- * \file mtypes.h
- * Main Mesa data structures.
- *
- * Please try to mark derived values with a leading underscore ('_').
- */
-
-#ifndef MTYPES_H
-#define MTYPES_H
-
-
-#include "main/glheader.h"
-#include "main/config.h"
-#include "main/mfeatures.h"
-#include "glapi/glapi.h"
-#include "math/m_matrix.h" /* GLmatrix */
-#include "main/simple_list.h" /* struct simple_node */
-#include "main/formats.h" /* MESA_FORMAT_COUNT */
-
-
-/**
- * Color channel data type.
- */
-#if CHAN_BITS == 8
- typedef GLubyte GLchan;
-#define CHAN_MAX 255
-#define CHAN_MAXF 255.0F
-#define CHAN_TYPE GL_UNSIGNED_BYTE
-#elif CHAN_BITS == 16
- typedef GLushort GLchan;
-#define CHAN_MAX 65535
-#define CHAN_MAXF 65535.0F
-#define CHAN_TYPE GL_UNSIGNED_SHORT
-#elif CHAN_BITS == 32
- typedef GLfloat GLchan;
-#define CHAN_MAX 1.0
-#define CHAN_MAXF 1.0F
-#define CHAN_TYPE GL_FLOAT
-#else
-#error "illegal number of color channel bits"
-#endif
-
-
-/**
- * Stencil buffer data type.
- */
-#if STENCIL_BITS==8
- typedef GLubyte GLstencil;
-#elif STENCIL_BITS==16
- typedef GLushort GLstencil;
-#else
-# error "illegal number of stencil bits"
-#endif
-
-
-/**
- * \name 64-bit extension of GLbitfield.
- */
-/*@{*/
-typedef GLuint64 GLbitfield64;
-
-#define BITFIELD64_ONE 1ULL
-#define BITFIELD64_ALLONES ~0ULL
-
-/** Set a single bit */
-#define BITFIELD64_BIT(b) (BITFIELD64_ONE << (b))
-
-/** Set a mask of the least significant \c b bits */
-#define BITFIELD64_MASK(b) (((b) >= 64) ? BITFIELD64_ALLONES : \
- (BITFIELD64_BIT(b) - 1))
-
-/**
- * Set all bits from l (low bit) to h (high bit), inclusive.
- *
- * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
- */
-#define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
-/*@}*/
-
-
-/**
- * \name Some forward type declarations
- */
-/*@{*/
-struct _mesa_HashTable;
-struct gl_attrib_node;
-struct gl_list_extensions;
-struct gl_meta_state;
-struct gl_pixelstore_attrib;
-struct gl_program_cache;
-struct gl_texture_format;
-struct gl_texture_image;
-struct gl_texture_object;
-struct gl_context;
-struct st_context;
-/*@}*/
-
-
-
-/**
- * Shader stages. Note that these will become 5 with tessellation.
- * These MUST have the same values as gallium's PIPE_SHADER_*
- */
-typedef enum
-{
- MESA_SHADER_VERTEX = 0,
- MESA_SHADER_FRAGMENT = 1,
- MESA_SHADER_GEOMETRY = 2,
- MESA_SHADER_TYPES = 3
-} gl_shader_type;
-
-
-
-/**
- * Indexes for vertex program attributes.
- * GL_NV_vertex_program aliases generic attributes over the conventional
- * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
- * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
- * generic attributes are distinct/separate).
- */
-typedef enum
-{
- VERT_ATTRIB_POS = 0,
- VERT_ATTRIB_WEIGHT = 1,
- VERT_ATTRIB_NORMAL = 2,
- VERT_ATTRIB_COLOR0 = 3,
- VERT_ATTRIB_COLOR1 = 4,
- VERT_ATTRIB_FOG = 5,
- VERT_ATTRIB_COLOR_INDEX = 6,
- VERT_ATTRIB_POINT_SIZE = 6, /*alias*/
- VERT_ATTRIB_EDGEFLAG = 7,
- VERT_ATTRIB_TEX0 = 8,
- VERT_ATTRIB_TEX1 = 9,
- VERT_ATTRIB_TEX2 = 10,
- VERT_ATTRIB_TEX3 = 11,
- VERT_ATTRIB_TEX4 = 12,
- VERT_ATTRIB_TEX5 = 13,
- VERT_ATTRIB_TEX6 = 14,
- VERT_ATTRIB_TEX7 = 15,
- VERT_ATTRIB_GENERIC0 = 16,
- VERT_ATTRIB_GENERIC1 = 17,
- VERT_ATTRIB_GENERIC2 = 18,
- VERT_ATTRIB_GENERIC3 = 19,
- VERT_ATTRIB_GENERIC4 = 20,
- VERT_ATTRIB_GENERIC5 = 21,
- VERT_ATTRIB_GENERIC6 = 22,
- VERT_ATTRIB_GENERIC7 = 23,
- VERT_ATTRIB_GENERIC8 = 24,
- VERT_ATTRIB_GENERIC9 = 25,
- VERT_ATTRIB_GENERIC10 = 26,
- VERT_ATTRIB_GENERIC11 = 27,
- VERT_ATTRIB_GENERIC12 = 28,
- VERT_ATTRIB_GENERIC13 = 29,
- VERT_ATTRIB_GENERIC14 = 30,
- VERT_ATTRIB_GENERIC15 = 31,
- VERT_ATTRIB_MAX = 32
-} gl_vert_attrib;
-
-/**
- * Bitflags for vertex attributes.
- * These are used in bitfields in many places.
- */
-/*@{*/
-#define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
-#define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
-#define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
-#define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
-#define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
-#define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
-#define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
-#define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG)
-#define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
-#define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
-#define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
-#define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
-#define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
-#define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
-#define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
-#define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
-#define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
-#define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
-#define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
-#define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
-#define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4)
-#define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5)
-#define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6)
-#define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7)
-#define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8)
-#define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9)
-#define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10)
-#define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11)
-#define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12)
-#define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13)
-#define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14)
-#define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15)
-
-#define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
-#define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
-/*@}*/
-
-
-/**
- * Indexes for vertex program result attributes
- */
-typedef enum
-{
- VERT_RESULT_HPOS = 0,
- VERT_RESULT_COL0 = 1,
- VERT_RESULT_COL1 = 2,
- VERT_RESULT_FOGC = 3,
- VERT_RESULT_TEX0 = 4,
- VERT_RESULT_TEX1 = 5,
- VERT_RESULT_TEX2 = 6,
- VERT_RESULT_TEX3 = 7,
- VERT_RESULT_TEX4 = 8,
- VERT_RESULT_TEX5 = 9,
- VERT_RESULT_TEX6 = 10,
- VERT_RESULT_TEX7 = 11,
- VERT_RESULT_PSIZ = 12,
- VERT_RESULT_BFC0 = 13,
- VERT_RESULT_BFC1 = 14,
- VERT_RESULT_EDGE = 15,
- VERT_RESULT_VAR0 = 16, /**< shader varying */
- VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)
-} gl_vert_result;
-
-
-/*********************************************/
-
-/**
- * Indexes for geometry program attributes.
- */
-typedef enum
-{
- GEOM_ATTRIB_POSITION = 0,
- GEOM_ATTRIB_COLOR0 = 1,
- GEOM_ATTRIB_COLOR1 = 2,
- GEOM_ATTRIB_SECONDARY_COLOR0 = 3,
- GEOM_ATTRIB_SECONDARY_COLOR1 = 4,
- GEOM_ATTRIB_FOG_FRAG_COORD = 5,
- GEOM_ATTRIB_POINT_SIZE = 6,
- GEOM_ATTRIB_CLIP_VERTEX = 7,
- GEOM_ATTRIB_PRIMITIVE_ID = 8,
- GEOM_ATTRIB_TEX_COORD = 9,
-
- GEOM_ATTRIB_VAR0 = 16,
- GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)
-} gl_geom_attrib;
-
-/**
- * Bitflags for geometry attributes.
- * These are used in bitfields in many places.
- */
-/*@{*/
-#define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0)
-#define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1)
-#define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
-#define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
-#define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD)
-#define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
-#define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION)
-#define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE)
-#define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
-#define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID)
-#define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0)
-
-#define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g)))
-/*@}*/
-
-
-/**
- * Indexes for geometry program result attributes
- */
-/*@{*/
-typedef enum {
- GEOM_RESULT_POS = 0,
- GEOM_RESULT_COL0 = 1,
- GEOM_RESULT_COL1 = 2,
- GEOM_RESULT_SCOL0 = 3,
- GEOM_RESULT_SCOL1 = 4,
- GEOM_RESULT_FOGC = 5,
- GEOM_RESULT_TEX0 = 6,
- GEOM_RESULT_TEX1 = 7,
- GEOM_RESULT_TEX2 = 8,
- GEOM_RESULT_TEX3 = 9,
- GEOM_RESULT_TEX4 = 10,
- GEOM_RESULT_TEX5 = 11,
- GEOM_RESULT_TEX6 = 12,
- GEOM_RESULT_TEX7 = 13,
- GEOM_RESULT_PSIZ = 14,
- GEOM_RESULT_CLPV = 15,
- GEOM_RESULT_PRID = 16,
- GEOM_RESULT_LAYR = 17,
- GEOM_RESULT_VAR0 = 18, /**< shader varying, should really be 16 */
- /* ### we need to -2 because var0 is 18 instead 16 like in the others */
- GEOM_RESULT_MAX = (GEOM_RESULT_VAR0 + MAX_VARYING - 2)
-} gl_geom_result;
-/*@}*/
-
-/**
- * Indexes for fragment program input attributes.
- */
-typedef enum
-{
- FRAG_ATTRIB_WPOS = 0,
- FRAG_ATTRIB_COL0 = 1,
- FRAG_ATTRIB_COL1 = 2,
- FRAG_ATTRIB_FOGC = 3,
- FRAG_ATTRIB_TEX0 = 4,
- FRAG_ATTRIB_TEX1 = 5,
- FRAG_ATTRIB_TEX2 = 6,
- FRAG_ATTRIB_TEX3 = 7,
- FRAG_ATTRIB_TEX4 = 8,
- FRAG_ATTRIB_TEX5 = 9,
- FRAG_ATTRIB_TEX6 = 10,
- FRAG_ATTRIB_TEX7 = 11,
- FRAG_ATTRIB_FACE = 12, /**< front/back face */
- FRAG_ATTRIB_PNTC = 13, /**< sprite/point coord */
- FRAG_ATTRIB_VAR0 = 14, /**< shader varying */
- FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
-} gl_frag_attrib;
-
-/**
- * Bitflags for fragment program input attributes.
- */
-/*@{*/
-#define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
-#define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
-#define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
-#define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
-#define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE)
-#define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC)
-#define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
-#define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
-#define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
-#define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
-#define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
-#define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
-#define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
-#define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
-#define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0)
-
-#define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U))
-#define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V))
-
-#define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
- FRAG_BIT_TEX1| \
- FRAG_BIT_TEX2| \
- FRAG_BIT_TEX3| \
- FRAG_BIT_TEX4| \
- FRAG_BIT_TEX5| \
- FRAG_BIT_TEX6| \
- FRAG_BIT_TEX7)
-/*@}*/
-
-
-/**
- * Fragment program results
- */
-typedef enum
-{
- FRAG_RESULT_DEPTH = 0,
- FRAG_RESULT_STENCIL = 1,
- FRAG_RESULT_COLOR = 2,
- FRAG_RESULT_DATA0 = 3,
- FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
-} gl_frag_result;
-
-
-/**
- * Indexes for all renderbuffers
- */
-typedef enum
-{
- /* the four standard color buffers */
- BUFFER_FRONT_LEFT,
- BUFFER_BACK_LEFT,
- BUFFER_FRONT_RIGHT,
- BUFFER_BACK_RIGHT,
- BUFFER_DEPTH,
- BUFFER_STENCIL,
- BUFFER_ACCUM,
- /* optional aux buffer */
- BUFFER_AUX0,
- /* generic renderbuffers */
- BUFFER_COLOR0,
- BUFFER_COLOR1,
- BUFFER_COLOR2,
- BUFFER_COLOR3,
- BUFFER_COLOR4,
- BUFFER_COLOR5,
- BUFFER_COLOR6,
- BUFFER_COLOR7,
- BUFFER_COUNT
-} gl_buffer_index;
-
-/**
- * Bit flags for all renderbuffers
- */
-#define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
-#define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
-#define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
-#define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
-#define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
-#define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
-#define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
-#define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
-#define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
-#define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
-#define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
-#define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
-#define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
-#define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
-#define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
-#define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
-#define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
-#define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
-#define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
-
-/**
- * Mask of all the color buffer bits (but not accum).
- */
-#define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \
- BUFFER_BIT_BACK_LEFT | \
- BUFFER_BIT_FRONT_RIGHT | \
- BUFFER_BIT_BACK_RIGHT | \
- BUFFER_BIT_AUX0 | \
- BUFFER_BIT_COLOR0 | \
- BUFFER_BIT_COLOR1 | \
- BUFFER_BIT_COLOR2 | \
- BUFFER_BIT_COLOR3 | \
- BUFFER_BIT_COLOR4 | \
- BUFFER_BIT_COLOR5 | \
- BUFFER_BIT_COLOR6 | \
- BUFFER_BIT_COLOR7)
-
-
-/**
- * Framebuffer configuration (aka visual / pixelformat)
- * Note: some of these fields should be boolean, but it appears that
- * code in drivers/dri/common/util.c requires int-sized fields.
- */
-struct gl_config
-{
- GLboolean rgbMode;
- GLboolean floatMode;
- GLboolean colorIndexMode; /* XXX is this used anywhere? */
- GLuint doubleBufferMode;
- GLuint stereoMode;
-
- GLboolean haveAccumBuffer;
- GLboolean haveDepthBuffer;
- GLboolean haveStencilBuffer;
-
- GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */
- GLuint redMask, greenMask, blueMask, alphaMask;
- GLint rgbBits; /* total bits for rgb */
- GLint indexBits; /* total bits for colorindex */
-
- GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
- GLint depthBits;
- GLint stencilBits;
-
- GLint numAuxBuffers;
-
- GLint level;
-
- /* EXT_visual_rating / GLX 1.2 */
- GLint visualRating;
-
- /* EXT_visual_info / GLX 1.2 */
- GLint transparentPixel;
- /* colors are floats scaled to ints */
- GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
- GLint transparentIndex;
-
- /* ARB_multisample / SGIS_multisample */
- GLint sampleBuffers;
- GLint samples;
-
- /* SGIX_pbuffer / GLX 1.3 */
- GLint maxPbufferWidth;
- GLint maxPbufferHeight;
- GLint maxPbufferPixels;
- GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */
- GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */
-
- /* OML_swap_method */
- GLint swapMethod;
-
- /* EXT_texture_from_pixmap */
- GLint bindToTextureRgb;
- GLint bindToTextureRgba;
- GLint bindToMipmapTexture;
- GLint bindToTextureTargets;
- GLint yInverted;
-};
-
-
-/**
- * Data structure for color tables
- */
-struct gl_color_table
-{
- GLenum InternalFormat; /**< The user-specified format */
- GLenum _BaseFormat; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
- GLuint Size; /**< number of entries in table */
- GLfloat *TableF; /**< Color table, floating point values */
- GLubyte *TableUB; /**< Color table, ubyte values */
- GLubyte RedSize;
- GLubyte GreenSize;
- GLubyte BlueSize;
- GLubyte AlphaSize;
- GLubyte LuminanceSize;
- GLubyte IntensitySize;
-};
-
-
-/**
- * \name Bit flags used for updating material values.
- */
-/*@{*/
-#define MAT_ATTRIB_FRONT_AMBIENT 0
-#define MAT_ATTRIB_BACK_AMBIENT 1
-#define MAT_ATTRIB_FRONT_DIFFUSE 2
-#define MAT_ATTRIB_BACK_DIFFUSE 3
-#define MAT_ATTRIB_FRONT_SPECULAR 4
-#define MAT_ATTRIB_BACK_SPECULAR 5
-#define MAT_ATTRIB_FRONT_EMISSION 6
-#define MAT_ATTRIB_BACK_EMISSION 7
-#define MAT_ATTRIB_FRONT_SHININESS 8
-#define MAT_ATTRIB_BACK_SHININESS 9
-#define MAT_ATTRIB_FRONT_INDEXES 10
-#define MAT_ATTRIB_BACK_INDEXES 11
-#define MAT_ATTRIB_MAX 12
-
-#define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
-#define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
-#define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
-#define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
-#define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
-#define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
-
-#define MAT_INDEX_AMBIENT 0
-#define MAT_INDEX_DIFFUSE 1
-#define MAT_INDEX_SPECULAR 2
-
-#define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
-#define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
-#define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
-#define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
-#define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
-#define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
-#define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
-#define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
-#define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
-#define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
-#define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
-#define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
-
-
-#define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
- MAT_BIT_FRONT_AMBIENT | \
- MAT_BIT_FRONT_DIFFUSE | \
- MAT_BIT_FRONT_SPECULAR | \
- MAT_BIT_FRONT_SHININESS | \
- MAT_BIT_FRONT_INDEXES)
-
-#define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
- MAT_BIT_BACK_AMBIENT | \
- MAT_BIT_BACK_DIFFUSE | \
- MAT_BIT_BACK_SPECULAR | \
- MAT_BIT_BACK_SHININESS | \
- MAT_BIT_BACK_INDEXES)
-
-#define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
-/*@}*/
-
-
-#define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
-#define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
-
-/**
- * Material shininess lookup table.
- */
-struct gl_shine_tab
-{
- struct gl_shine_tab *next, *prev;
- GLfloat tab[SHINE_TABLE_SIZE+1];
- GLfloat shininess;
- GLuint refcount;
-};
-
-
-/**
- * Light source state.
- */
-struct gl_light
-{
- struct gl_light *next; /**< double linked list with sentinel */
- struct gl_light *prev;
-
- GLfloat Ambient[4]; /**< ambient color */
- GLfloat Diffuse[4]; /**< diffuse color */
- GLfloat Specular[4]; /**< specular color */
- GLfloat EyePosition[4]; /**< position in eye coordinates */
- GLfloat SpotDirection[4]; /**< spotlight direction in eye coordinates */
- GLfloat SpotExponent;
- GLfloat SpotCutoff; /**< in degrees */
- GLfloat _CosCutoffNeg; /**< = cos(SpotCutoff) */
- GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */
- GLfloat ConstantAttenuation;
- GLfloat LinearAttenuation;
- GLfloat QuadraticAttenuation;
- GLboolean Enabled; /**< On/off flag */
-
- /**
- * \name Derived fields
- */
- /*@{*/
- GLbitfield _Flags; /**< State */
-
- GLfloat _Position[4]; /**< position in eye/obj coordinates */
- GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */
- GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
- GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
- GLfloat _VP_inf_spot_attenuation;
-
- GLfloat _SpotExpTable[EXP_TABLE_SIZE][2]; /**< to replace a pow() call */
- GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */
- GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */
- GLfloat _MatSpecular[2][3]; /**< material spec * light specular */
- GLfloat _dli; /**< CI diffuse light intensity */
- GLfloat _sli; /**< CI specular light intensity */
- /*@}*/
-};
-
-
-/**
- * Light model state.
- */
-struct gl_lightmodel
-{
- GLfloat Ambient[4]; /**< ambient color */
- GLboolean LocalViewer; /**< Local (or infinite) view point? */
- GLboolean TwoSide; /**< Two (or one) sided lighting? */
- GLenum ColorControl; /**< either GL_SINGLE_COLOR
- * or GL_SEPARATE_SPECULAR_COLOR */
-};
-
-
-/**
- * Material state.
- */
-struct gl_material
-{
- GLfloat Attrib[MAT_ATTRIB_MAX][4];
-};
-
-
-/**
- * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
- */
-struct gl_accum_attrib
-{
- GLfloat ClearColor[4]; /**< Accumulation buffer clear color */
-};
-
-
-/**
- * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
- */
-struct gl_colorbuffer_attrib
-{
- GLuint ClearIndex; /**< Index to use for glClear */
- GLclampf ClearColor[4]; /**< Color to use for glClear */
-
- GLuint IndexMask; /**< Color index write mask */
- GLubyte ColorMask[MAX_DRAW_BUFFERS][4];/**< Each flag is 0xff or 0x0 */
-
- GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
-
- /**
- * \name alpha testing
- */
- /*@{*/
- GLboolean AlphaEnabled; /**< Alpha test enabled flag */
- GLenum AlphaFunc; /**< Alpha test function */
- GLclampf AlphaRef; /**< Alpha reference value */
- /*@}*/
-
- /**
- * \name Blending
- */
- /*@{*/
- GLbitfield BlendEnabled; /**< Per-buffer blend enable flags */
- GLenum BlendSrcRGB; /**< Blending source operator */
- GLenum BlendDstRGB; /**< Blending destination operator */
- GLenum BlendSrcA; /**< GL_INGR_blend_func_separate */
- GLenum BlendDstA; /**< GL_INGR_blend_func_separate */
- GLenum BlendEquationRGB; /**< Blending equation */
- GLenum BlendEquationA; /**< GL_EXT_blend_equation_separate */
- GLfloat BlendColor[4]; /**< Blending color */
- /*@}*/
-
- /**
- * \name Logic op
- */
- /*@{*/
- GLenum LogicOp; /**< Logic operator */
- GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */
- GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */
- GLboolean _LogicOpEnabled; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
- /*@}*/
-
- GLboolean DitherFlag; /**< Dither enable flag */
-
- GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
- GLenum ClampReadColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
-};
-
-
-/**
- * Current attribute group (GL_CURRENT_BIT).
- */
-struct gl_current_attrib
-{
- /**
- * \name Current vertex attributes.
- * \note Values are valid only after FLUSH_VERTICES has been called.
- * \note Index and Edgeflag current values are stored as floats in the
- * SIX and SEVEN attribute slots.
- */
- GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Position, color, texcoords, etc */
-
- /**
- * \name Current raster position attributes (always valid).
- * \note This set of attributes is very similar to the SWvertex struct.
- */
- /*@{*/
- GLfloat RasterPos[4];
- GLfloat RasterDistance;
- GLfloat RasterColor[4];
- GLfloat RasterSecondaryColor[4];
- GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
- GLboolean RasterPosValid;
- /*@}*/
-};
-
-
-/**
- * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
- */
-struct gl_depthbuffer_attrib
-{
- GLenum Func; /**< Function for depth buffer compare */
- GLclampd Clear; /**< Value to clear depth buffer to */
- GLboolean Test; /**< Depth buffering enabled flag */
- GLboolean Mask; /**< Depth buffer writable? */
- GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */
- GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
-};
-
-
-/**
- * Evaluator attribute group (GL_EVAL_BIT).
- */
-struct gl_eval_attrib
-{
- /**
- * \name Enable bits
- */
- /*@{*/
- GLboolean Map1Color4;
- GLboolean Map1Index;
- GLboolean Map1Normal;
- GLboolean Map1TextureCoord1;
- GLboolean Map1TextureCoord2;
- GLboolean Map1TextureCoord3;
- GLboolean Map1TextureCoord4;
- GLboolean Map1Vertex3;
- GLboolean Map1Vertex4;
- GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */
- GLboolean Map2Color4;
- GLboolean Map2Index;
- GLboolean Map2Normal;
- GLboolean Map2TextureCoord1;
- GLboolean Map2TextureCoord2;
- GLboolean Map2TextureCoord3;
- GLboolean Map2TextureCoord4;
- GLboolean Map2Vertex3;
- GLboolean Map2Vertex4;
- GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */
- GLboolean AutoNormal;
- /*@}*/
-
- /**
- * \name Map Grid endpoints and divisions and calculated du values
- */
- /*@{*/
- GLint MapGrid1un;
- GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
- GLint MapGrid2un, MapGrid2vn;
- GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
- GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
- /*@}*/
-};
-
-
-/**
- * Fog attribute group (GL_FOG_BIT).
- */
-struct gl_fog_attrib
-{
- GLboolean Enabled; /**< Fog enabled flag */
- GLfloat Color[4]; /**< Fog color */
- GLfloat Density; /**< Density >= 0.0 */
- GLfloat Start; /**< Start distance in eye coords */
- GLfloat End; /**< End distance in eye coords */
- GLfloat Index; /**< Fog index */
- GLenum Mode; /**< Fog mode */
- GLboolean ColorSumEnabled;
- GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */
- GLfloat _Scale; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
-};
-
-
-/**
- * Hint attribute group (GL_HINT_BIT).
- *
- * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
- */
-struct gl_hint_attrib
-{
- GLenum PerspectiveCorrection;
- GLenum PointSmooth;
- GLenum LineSmooth;
- GLenum PolygonSmooth;
- GLenum Fog;
- GLenum ClipVolumeClipping; /**< GL_EXT_clip_volume_hint */
- GLenum TextureCompression; /**< GL_ARB_texture_compression */
- GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */
- GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
-};
-
-/**
- * Light state flags.
- */
-/*@{*/
-#define LIGHT_SPOT 0x1
-#define LIGHT_LOCAL_VIEWER 0x2
-#define LIGHT_POSITIONAL 0x4
-#define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
-/*@}*/
-
-
-/**
- * Lighting attribute group (GL_LIGHT_BIT).
- */
-struct gl_light_attrib
-{
- struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */
- struct gl_lightmodel Model; /**< Lighting model */
-
- /**
- * Must flush FLUSH_VERTICES before referencing:
- */
- /*@{*/
- struct gl_material Material; /**< Includes front & back values */
- /*@}*/
-
- GLboolean Enabled; /**< Lighting enabled flag */
- GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */
- GLenum ProvokingVertex; /**< GL_EXT_provoking_vertex */
- GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */
- GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */
- GLbitfield ColorMaterialBitmask; /**< bitmask formed from Face and Mode */
- GLboolean ColorMaterialEnabled;
- GLenum ClampVertexColor;
-
- struct gl_light EnabledList; /**< List sentinel */
-
- /**
- * Derived state for optimizations:
- */
- /*@{*/
- GLboolean _NeedEyeCoords;
- GLboolean _NeedVertices; /**< Use fast shader? */
- GLbitfield _Flags; /**< LIGHT_* flags, see above */
- GLfloat _BaseColor[2][3];
- /*@}*/
-};
-
-
-/**
- * Line attribute group (GL_LINE_BIT).
- */
-struct gl_line_attrib
-{
- GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */
- GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */
- GLushort StipplePattern; /**< Stipple pattern */
- GLint StippleFactor; /**< Stipple repeat factor */
- GLfloat Width; /**< Line width */
-};
-
-
-/**
- * Display list attribute group (GL_LIST_BIT).
- */
-struct gl_list_attrib
-{
- GLuint ListBase;
-};
-
-
-/**
- * Multisample attribute group (GL_MULTISAMPLE_BIT).
- */
-struct gl_multisample_attrib
-{
- GLboolean Enabled;
- GLboolean _Enabled; /**< true if Enabled and multisample buffer */
- GLboolean SampleAlphaToCoverage;
- GLboolean SampleAlphaToOne;
- GLboolean SampleCoverage;
- GLfloat SampleCoverageValue;
- GLboolean SampleCoverageInvert;
-};
-
-
-/**
- * A pixelmap (see glPixelMap)
- */
-struct gl_pixelmap
-{
- GLint Size;
- GLfloat Map[MAX_PIXEL_MAP_TABLE];
- GLubyte Map8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */
-};
-
-
-/**
- * Collection of all pixelmaps
- */
-struct gl_pixelmaps
-{
- struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */
- struct gl_pixelmap GtoG;
- struct gl_pixelmap BtoB;
- struct gl_pixelmap AtoA;
- struct gl_pixelmap ItoR;
- struct gl_pixelmap ItoG;
- struct gl_pixelmap ItoB;
- struct gl_pixelmap ItoA;
- struct gl_pixelmap ItoI;
- struct gl_pixelmap StoS;
-};
-
-
-/**
- * Pixel attribute group (GL_PIXEL_MODE_BIT).
- */
-struct gl_pixel_attrib
-{
- GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */
-
- /*--- Begin Pixel Transfer State ---*/
- /* Fields are in the order in which they're applied... */
-
- /** Scale & Bias (index shift, offset) */
- /*@{*/
- GLfloat RedBias, RedScale;
- GLfloat GreenBias, GreenScale;
- GLfloat BlueBias, BlueScale;
- GLfloat AlphaBias, AlphaScale;
- GLfloat DepthBias, DepthScale;
- GLint IndexShift, IndexOffset;
- /*@}*/
-
- /* Pixel Maps */
- /* Note: actual pixel maps are not part of this attrib group */
- GLboolean MapColorFlag;
- GLboolean MapStencilFlag;
-
- /*--- End Pixel Transfer State ---*/
-
- /** glPixelZoom */
- GLfloat ZoomX, ZoomY;
-
- /** GL_SGI_texture_color_table */
- GLfloat TextureColorTableScale[4]; /**< RGBA */
- GLfloat TextureColorTableBias[4]; /**< RGBA */
-};
-
-
-/**
- * Point attribute group (GL_POINT_BIT).
- */
-struct gl_point_attrib
-{
- GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */
- GLfloat Size; /**< User-specified point size */
- GLfloat Params[3]; /**< GL_EXT_point_parameters */
- GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */
- GLfloat Threshold; /**< GL_EXT_point_parameters */
- GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */
- GLboolean PointSprite; /**< GL_NV/ARB_point_sprite */
- GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
- GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */
- GLenum SpriteOrigin; /**< GL_ARB_point_sprite */
-};
-
-
-/**
- * Polygon attribute group (GL_POLYGON_BIT).
- */
-struct gl_polygon_attrib
-{
- GLenum FrontFace; /**< Either GL_CW or GL_CCW */
- GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
- GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */
- GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */
- GLboolean CullFlag; /**< Culling on/off flag */
- GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */
- GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */
- GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */
- GLfloat OffsetFactor; /**< Polygon offset factor, from user */
- GLfloat OffsetUnits; /**< Polygon offset units, from user */
- GLboolean OffsetPoint; /**< Offset in GL_POINT mode */
- GLboolean OffsetLine; /**< Offset in GL_LINE mode */
- GLboolean OffsetFill; /**< Offset in GL_FILL mode */
-};
-
-
-/**
- * Scissor attributes (GL_SCISSOR_BIT).
- */
-struct gl_scissor_attrib
-{
- GLboolean Enabled; /**< Scissor test enabled? */
- GLint X, Y; /**< Lower left corner of box */
- GLsizei Width, Height; /**< Size of box */
-};
-
-
-/**
- * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
- *
- * Three sets of stencil data are tracked so that OpenGL 2.0,
- * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
- * simultaneously. In each of the stencil state arrays, element 0 corresponds
- * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 /
- * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the
- * GL_EXT_stencil_two_side GL_BACK state.
- *
- * The derived value \c _BackFace is either 1 or 2 depending on whether or
- * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
- *
- * The derived value \c _TestTwoSide is set when the front-face and back-face
- * stencil state are different.
- */
-struct gl_stencil_attrib
-{
- GLboolean Enabled; /**< Enabled flag */
- GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */
- GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 2) */
- GLboolean _Enabled; /**< Enabled and stencil buffer present */
- GLboolean _TestTwoSide;
- GLubyte _BackFace; /**< Current back stencil state (1 or 2) */
- GLenum Function[3]; /**< Stencil function */
- GLenum FailFunc[3]; /**< Fail function */
- GLenum ZPassFunc[3]; /**< Depth buffer pass function */
- GLenum ZFailFunc[3]; /**< Depth buffer fail function */
- GLint Ref[3]; /**< Reference value */
- GLuint ValueMask[3]; /**< Value mask */
- GLuint WriteMask[3]; /**< Write mask */
- GLuint Clear; /**< Clear value */
-};
-
-
-/**
- * An index for each type of texture object. These correspond to the GL
- * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
- * Note: the order is from highest priority to lowest priority.
- */
-typedef enum
-{
- TEXTURE_2D_ARRAY_INDEX,
- TEXTURE_1D_ARRAY_INDEX,
- TEXTURE_CUBE_INDEX,
- TEXTURE_3D_INDEX,
- TEXTURE_RECT_INDEX,
- TEXTURE_2D_INDEX,
- TEXTURE_1D_INDEX,
- NUM_TEXTURE_TARGETS
-} gl_texture_index;
-
-
-/**
- * Bit flags for each type of texture object
- * Used for Texture.Unit[]._ReallyEnabled flags.
- */
-/*@{*/
-#define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
-#define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
-#define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
-#define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
-#define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
-#define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
-#define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
-/*@}*/
-
-
-/**
- * TexGenEnabled flags.
- */
-/*@{*/
-#define S_BIT 1
-#define T_BIT 2
-#define R_BIT 4
-#define Q_BIT 8
-#define STR_BITS (S_BIT | T_BIT | R_BIT)
-/*@}*/
-
-
-/**
- * Bit flag versions of the corresponding GL_ constants.
- */
-/*@{*/
-#define TEXGEN_SPHERE_MAP 0x1
-#define TEXGEN_OBJ_LINEAR 0x2
-#define TEXGEN_EYE_LINEAR 0x4
-#define TEXGEN_REFLECTION_MAP_NV 0x8
-#define TEXGEN_NORMAL_MAP_NV 0x10
-
-#define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
- TEXGEN_REFLECTION_MAP_NV | \
- TEXGEN_NORMAL_MAP_NV)
-#define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
- TEXGEN_REFLECTION_MAP_NV | \
- TEXGEN_NORMAL_MAP_NV | \
- TEXGEN_EYE_LINEAR)
-/*@}*/
-
-
-
-/** Tex-gen enabled for texture unit? */
-#define ENABLE_TEXGEN(unit) (1 << (unit))
-
-/** Non-identity texture matrix for texture unit? */
-#define ENABLE_TEXMAT(unit) (1 << (unit))
-
-
-/**
- * Texel fetch function prototype. We use texel fetch functions to
- * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
- * texture images. These functions help to isolate us from the gritty
- * details of all the various texture image encodings.
- *
- * \param texImage texture image.
- * \param col texel column.
- * \param row texel row.
- * \param img texel image level/layer.
- * \param texelOut output texel (up to 4 GLchans)
- */
-typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- GLchan *texelOut );
-
-/**
- * As above, but returns floats.
- * Used for depth component images and for upcoming signed/float
- * texture images.
- */
-typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- GLfloat *texelOut );
-
-
-typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,
- GLint col, GLint row, GLint img,
- const void *texel);
-
-
-/**
- * Texture image state. Describes the dimensions of a texture image,
- * the texel format and pointers to Texel Fetch functions.
- */
-struct gl_texture_image
-{
- GLint InternalFormat; /**< Internal format as given by the user */
- GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
- * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
- * GL_INTENSITY, GL_COLOR_INDEX,
- * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
- * only. Used for choosing TexEnv arithmetic.
- */
- GLuint TexFormat; /**< The actual format: MESA_FORMAT_x */
-
- GLuint Border; /**< 0 or 1 */
- GLuint Width; /**< = 2^WidthLog2 + 2*Border */
- GLuint Height; /**< = 2^HeightLog2 + 2*Border */
- GLuint Depth; /**< = 2^DepthLog2 + 2*Border */
- GLuint Width2; /**< = Width - 2*Border */
- GLuint Height2; /**< = Height - 2*Border */
- GLuint Depth2; /**< = Depth - 2*Border */
- GLuint WidthLog2; /**< = log2(Width2) */
- GLuint HeightLog2; /**< = log2(Height2) */
- GLuint DepthLog2; /**< = log2(Depth2) */
- GLuint MaxLog2; /**< = MAX(WidthLog2, HeightLog2) */
- GLfloat WidthScale; /**< used for mipmap LOD computation */
- GLfloat HeightScale; /**< used for mipmap LOD computation */
- GLfloat DepthScale; /**< used for mipmap LOD computation */
- GLboolean IsClientData; /**< Data owned by client? */
- GLboolean _IsPowerOfTwo; /**< Are all dimensions powers of two? */
-
- struct gl_texture_object *TexObject; /**< Pointer back to parent object */
-
- FetchTexelFuncC FetchTexelc; /**< GLchan texel fetch function pointer */
- FetchTexelFuncF FetchTexelf; /**< Float texel fetch function pointer */
-
- GLuint RowStride; /**< Padded width in units of texels */
- GLuint *ImageOffsets; /**< if 3D texture: array [Depth] of offsets to
- each 2D slice in 'Data', in texels */
- GLvoid *Data; /**< Image data, accessed via FetchTexel() */
-
- /**
- * \name For device driver:
- */
- /*@{*/
- void *DriverData; /**< Arbitrary device driver data */
- /*@}*/
-};
-
-
-/**
- * Indexes for cube map faces.
- */
-typedef enum
-{
- FACE_POS_X = 0,
- FACE_NEG_X = 1,
- FACE_POS_Y = 2,
- FACE_NEG_Y = 3,
- FACE_POS_Z = 4,
- FACE_NEG_Z = 5,
- MAX_FACES = 6
-} gl_face_index;
-
-
-/**
- * Texture object state. Contains the array of mipmap images, border color,
- * wrap modes, filter modes, shadow/texcompare state, and the per-texture
- * color palette.
- */
-struct gl_texture_object
-{
- _glthread_Mutex Mutex; /**< for thread safety */
- GLint RefCount; /**< reference count */
- GLuint Name; /**< the user-visible texture object ID */
- GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
- GLfloat Priority; /**< in [0,1] */
- union {
- GLfloat f[4];
- GLuint ui[4];
- GLint i[4];
- } BorderColor; /**< Interpreted according to texture format */
- GLenum WrapS; /**< S-axis texture image wrap mode */
- GLenum WrapT; /**< T-axis texture image wrap mode */
- GLenum WrapR; /**< R-axis texture image wrap mode */
- GLenum MinFilter; /**< minification filter */
- GLenum MagFilter; /**< magnification filter */
- GLfloat MinLod; /**< min lambda, OpenGL 1.2 */
- GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */
- GLfloat LodBias; /**< OpenGL 1.4 */
- GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */
- GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */
- GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
- GLenum CompareMode; /**< GL_ARB_shadow */
- GLenum CompareFunc; /**< GL_ARB_shadow */
- GLfloat CompareFailValue; /**< GL_ARB_shadow_ambient */
- GLenum DepthMode; /**< GL_ARB_depth_texture */
- GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */
- GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - b in spec) */
- GLint CropRect[4]; /**< GL_OES_draw_texture */
- GLenum Swizzle[4]; /**< GL_EXT_texture_swizzle */
- GLuint _Swizzle; /**< same as Swizzle, but SWIZZLE_* format */
- GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */
- GLboolean _Complete; /**< Is texture object complete? */
- GLboolean _RenderToTexture; /**< Any rendering to this texture? */
- GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
-
- /** Actual texture images, indexed by [cube face] and [mipmap level] */
- struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
-
- /** GL_EXT_paletted_texture */
- struct gl_color_table Palette;
-
- /**
- * \name For device driver.
- * Note: instead of attaching driver data to this pointer, it's preferable
- * to instead use this struct as a base class for your own texture object
- * class. Driver->NewTextureObject() can be used to implement the
- * allocation.
- */
- void *DriverData; /**< Arbitrary device driver data */
-};
-
-
-/** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
-#define MAX_COMBINER_TERMS 4
-
-
-/**
- * Texture combine environment state.
- */
-struct gl_tex_env_combine_state
-{
- GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
- GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
- /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
- GLenum SourceRGB[MAX_COMBINER_TERMS];
- GLenum SourceA[MAX_COMBINER_TERMS];
- /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
- GLenum OperandRGB[MAX_COMBINER_TERMS];
- GLenum OperandA[MAX_COMBINER_TERMS];
- GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
- GLuint ScaleShiftA; /**< 0, 1 or 2 */
- GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */
- GLuint _NumArgsA; /**< Number of inputs used for the A combiner */
-};
-
-
-/**
- * Texture coord generation state.
- */
-struct gl_texgen
-{
- GLenum Mode; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
- GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
- GLfloat ObjectPlane[4];
- GLfloat EyePlane[4];
-};
-
-
-/**
- * Texture unit state. Contains enable flags, texture environment/function/
- * combiners, texgen state, pointers to current texture objects and
- * post-filter color tables.
- */
-struct gl_texture_unit
-{
- GLbitfield Enabled; /**< bitmask of TEXTURE_*_BIT flags */
- GLbitfield _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */
-
- GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
- GLfloat EnvColor[4];
-
- struct gl_texgen GenS;
- struct gl_texgen GenT;
- struct gl_texgen GenR;
- struct gl_texgen GenQ;
- GLbitfield TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */
- GLbitfield _GenFlags; /**< Bitwise-OR of Gen[STRQ]._ModeBit */
-
- GLfloat LodBias; /**< for biasing mipmap levels */
- GLenum BumpTarget;
- GLfloat RotMatrix[4]; /* 2x2 matrix */
-
- /**
- * \name GL_EXT_texture_env_combine
- */
- struct gl_tex_env_combine_state Combine;
-
- /**
- * Derived state based on \c EnvMode and the \c BaseFormat of the
- * currently enabled texture.
- */
- struct gl_tex_env_combine_state _EnvMode;
-
- /**
- * Currently enabled combiner state. This will point to either
- * \c Combine or \c _EnvMode.
- */
- struct gl_tex_env_combine_state *_CurrentCombine;
-
- /** Current texture object pointers */
- struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
-
- /** Points to highest priority, complete and enabled texture object */
- struct gl_texture_object *_Current;
-
- /** GL_SGI_texture_color_table */
- /*@{*/
- struct gl_color_table ColorTable;
- struct gl_color_table ProxyColorTable;
- GLboolean ColorTableEnabled;
- /*@}*/
-};
-
-
-/**
- * Texture attribute group (GL_TEXTURE_BIT).
- */
-struct gl_texture_attrib
-{
- GLuint CurrentUnit; /**< GL_ACTIVE_TEXTURE */
- struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
-
- struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
-
- /** GL_ARB_seamless_cubemap */
- GLboolean CubeMapSeamless;
-
- /** GL_EXT_shared_texture_palette */
- GLboolean SharedPalette;
- struct gl_color_table Palette;
-
- /** Texture units/samplers used by vertex or fragment texturing */
- GLbitfield _EnabledUnits;
-
- /** Texture coord units/sets used for fragment texturing */
- GLbitfield _EnabledCoordUnits;
-
- /** Texture coord units that have texgen enabled */
- GLbitfield _TexGenEnabled;
-
- /** Texture coord units that have non-identity matrices */
- GLbitfield _TexMatEnabled;
-
- /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
- GLbitfield _GenFlags;
-};
-
-
-/**
- * Transformation attribute group (GL_TRANSFORM_BIT).
- */
-struct gl_transform_attrib
-{
- GLenum MatrixMode; /**< Matrix mode */
- GLfloat EyeUserPlane[MAX_CLIP_PLANES][4]; /**< User clip planes */
- GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4]; /**< derived */
- GLbitfield ClipPlanesEnabled; /**< on/off bitmask */
- GLboolean Normalize; /**< Normalize all normals? */
- GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */
- GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */
- GLboolean DepthClamp; /**< GL_ARB_depth_clamp */
-
- GLfloat CullEyePos[4];
- GLfloat CullObjPos[4];
-};
-
-
-/**
- * Viewport attribute group (GL_VIEWPORT_BIT).
- */
-struct gl_viewport_attrib
-{
- GLint X, Y; /**< position */
- GLsizei Width, Height; /**< size */
- GLfloat Near, Far; /**< Depth buffer range */
- GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */
-};
-
-
-/**
- * GL_ARB_vertex/pixel_buffer_object buffer object
- */
-struct gl_buffer_object
-{
- _glthread_Mutex Mutex;
- GLint RefCount;
- GLuint Name;
- GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
- GLsizeiptrARB Size; /**< Size of buffer storage in bytes */
- GLubyte *Data; /**< Location of storage either in RAM or VRAM. */
- /** Fields describing a mapped buffer */
- /*@{*/
- GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
- GLvoid *Pointer; /**< User-space address of mapping */
- GLintptr Offset; /**< Mapped offset */
- GLsizeiptr Length; /**< Mapped length */
- /*@}*/
- GLboolean Written; /**< Ever written to? (for debugging) */
- GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
-};
-
-
-/**
- * Client pixel packing/unpacking attributes
- */
-struct gl_pixelstore_attrib
-{
- GLint Alignment;
- GLint RowLength;
- GLint SkipPixels;
- GLint SkipRows;
- GLint ImageHeight;
- GLint SkipImages;
- GLboolean SwapBytes;
- GLboolean LsbFirst;
- GLboolean ClientStorage; /**< GL_APPLE_client_storage */
- GLboolean Invert; /**< GL_MESA_pack_invert */
- struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
-};
-
-
-/**
- * Client vertex array attributes
- */
-struct gl_client_array
-{
- GLint Size; /**< components per element (1,2,3,4) */
- GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */
- GLenum Format; /**< default: GL_RGBA, but may be GL_BGRA */
- GLsizei Stride; /**< user-specified stride */
- GLsizei StrideB; /**< actual stride in bytes */
- const GLubyte *Ptr; /**< Points to array data */
- GLboolean Enabled; /**< Enabled flag is a boolean */
- GLboolean Normalized; /**< GL_ARB_vertex_program */
- GLboolean Integer; /**< Integer-valued? */
- GLuint _ElementSize; /**< size of each element in bytes */
-
- struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
- GLuint _MaxElement; /**< max element index into array buffer + 1 */
-};
-
-
-/**
- * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object
- * extension, but a nice encapsulation in any case.
- */
-struct gl_array_object
-{
- /** Name of the array object as received from glGenVertexArrayAPPLE. */
- GLuint Name;
-
- GLint RefCount;
- _glthread_Mutex Mutex;
- GLboolean VBOonly; /**< require all arrays to live in VBOs? */
-
- /** Conventional vertex arrays */
- /*@{*/
- struct gl_client_array Vertex;
- struct gl_client_array Weight;
- struct gl_client_array Normal;
- struct gl_client_array Color;
- struct gl_client_array SecondaryColor;
- struct gl_client_array FogCoord;
- struct gl_client_array Index;
- struct gl_client_array EdgeFlag;
- struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
- struct gl_client_array PointSize;
- /*@}*/
-
- /**
- * Generic arrays for vertex programs/shaders.
- * For NV vertex programs, these attributes alias and take priority
- * over the conventional attribs above. For ARB vertex programs and
- * GLSL vertex shaders, these attributes are separate.
- */
- struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS];
-
- /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
- GLbitfield _Enabled;
-
- /**
- * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs
- * we can determine the max legal (in bounds) glDrawElements array index.
- */
- GLuint _MaxElement;
-};
-
-
-/**
- * Vertex array state
- */
-struct gl_array_attrib
-{
- /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
- struct gl_array_object *ArrayObj;
-
- /** The default vertex array object */
- struct gl_array_object *DefaultArrayObj;
-
- /** Array objects (GL_ARB/APPLE_vertex_array_object) */
- struct _mesa_HashTable *Objects;
-
- GLint ActiveTexture; /**< Client Active Texture */
- GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */
- GLuint LockCount; /**< GL_EXT_compiled_vertex_array */
-
- /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
- GLboolean PrimitiveRestart;
- GLuint RestartIndex;
-
- GLbitfield NewState; /**< mask of _NEW_ARRAY_* values */
-
- /* GL_ARB_vertex_buffer_object */
- struct gl_buffer_object *ArrayBufferObj;
- struct gl_buffer_object *ElementArrayBufferObj;
-};
-
-
-/**
- * Feedback buffer state
- */
-struct gl_feedback
-{
- GLenum Type;
- GLbitfield _Mask; /**< FB_* bits */
- GLfloat *Buffer;
- GLuint BufferSize;
- GLuint Count;
-};
-
-
-/**
- * Selection buffer state
- */
-struct gl_selection
-{
- GLuint *Buffer; /**< selection buffer */
- GLuint BufferSize; /**< size of the selection buffer */
- GLuint BufferCount; /**< number of values in the selection buffer */
- GLuint Hits; /**< number of records in the selection buffer */
- GLuint NameStackDepth; /**< name stack depth */
- GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
- GLboolean HitFlag; /**< hit flag */
- GLfloat HitMinZ; /**< minimum hit depth */
- GLfloat HitMaxZ; /**< maximum hit depth */
-};
-
-
-/**
- * 1-D Evaluator control points
- */
-struct gl_1d_map
-{
- GLuint Order; /**< Number of control points */
- GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */
- GLfloat *Points; /**< Points to contiguous control points */
-};
-
-
-/**
- * 2-D Evaluator control points
- */
-struct gl_2d_map
-{
- GLuint Uorder; /**< Number of control points in U dimension */
- GLuint Vorder; /**< Number of control points in V dimension */
- GLfloat u1, u2, du;
- GLfloat v1, v2, dv;
- GLfloat *Points; /**< Points to contiguous control points */
-};
-
-
-/**
- * All evaluator control point state
- */
-struct gl_evaluators
-{
- /**
- * \name 1-D maps
- */
- /*@{*/
- struct gl_1d_map Map1Vertex3;
- struct gl_1d_map Map1Vertex4;
- struct gl_1d_map Map1Index;
- struct gl_1d_map Map1Color4;
- struct gl_1d_map Map1Normal;
- struct gl_1d_map Map1Texture1;
- struct gl_1d_map Map1Texture2;
- struct gl_1d_map Map1Texture3;
- struct gl_1d_map Map1Texture4;
- struct gl_1d_map Map1Attrib[16]; /**< GL_NV_vertex_program */
- /*@}*/
-
- /**
- * \name 2-D maps
- */
- /*@{*/
- struct gl_2d_map Map2Vertex3;
- struct gl_2d_map Map2Vertex4;
- struct gl_2d_map Map2Index;
- struct gl_2d_map Map2Color4;
- struct gl_2d_map Map2Normal;
- struct gl_2d_map Map2Texture1;
- struct gl_2d_map Map2Texture2;
- struct gl_2d_map Map2Texture3;
- struct gl_2d_map Map2Texture4;
- struct gl_2d_map Map2Attrib[16]; /**< GL_NV_vertex_program */
- /*@}*/
-};
-
-
-/**
- * Names of the various vertex/fragment program register files, etc.
- *
- * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
- * All values should fit in a 4-bit field.
- *
- * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
- * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
- * be "uniform" variables since they can only be set outside glBegin/End.
- * They're also all stored in the same Parameters array.
- */
-typedef enum
-{
- PROGRAM_TEMPORARY, /**< machine->Temporary[] */
- PROGRAM_INPUT, /**< machine->Inputs[] */
- PROGRAM_OUTPUT, /**< machine->Outputs[] */
- PROGRAM_VARYING, /**< machine->Inputs[]/Outputs[] */
- PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */
- PROGRAM_ENV_PARAM, /**< gl_program->Parameters[] */
- PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */
- PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */
- PROGRAM_CONSTANT, /**< gl_program->Parameters[] */
- PROGRAM_UNIFORM, /**< gl_program->Parameters[] */
- PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */
- PROGRAM_ADDRESS, /**< machine->AddressReg */
- PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */
- PROGRAM_UNDEFINED, /**< Invalid/TBD value */
- PROGRAM_FILE_MAX
-} gl_register_file;
-
-
-/** Vertex and fragment instructions */
-struct prog_instruction;
-struct gl_program_parameter_list;
-struct gl_uniform_list;
-
-
-/**
- * Base class for any kind of program object
- */
-struct gl_program
-{
- GLuint Id;
- GLubyte *String; /**< Null-terminated program text */
- GLint RefCount;
- GLenum Target; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
- GLenum Format; /**< String encoding format */
- GLboolean Resident;
-
- struct prog_instruction *Instructions;
-
- GLbitfield InputsRead; /**< Bitmask of which input regs are read */
- GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
- GLbitfield InputFlags[MAX_PROGRAM_INPUTS]; /**< PROG_PARAM_BIT_x flags */
- GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
- GLbitfield TexturesUsed[MAX_TEXTURE_UNITS]; /**< TEXTURE_x_BIT bitmask */
- GLbitfield SamplersUsed; /**< Bitfield of which samplers are used */
- GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
-
-
- /** Named parameters, constants, etc. from program text */
- struct gl_program_parameter_list *Parameters;
- /** Numbered local parameters */
- GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
-
- /** Vertex/fragment shader varying vars */
- struct gl_program_parameter_list *Varying;
- /** Vertex program user-defined attributes */
- struct gl_program_parameter_list *Attributes;
-
- /** Map from sampler unit to texture unit (set by glUniform1i()) */
- GLubyte SamplerUnits[MAX_SAMPLERS];
- /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
- gl_texture_index SamplerTargets[MAX_SAMPLERS];
-
- /** Bitmask of which register files are read/written with indirect
- * addressing. Mask of (1 << PROGRAM_x) bits.
- */
- GLbitfield IndirectRegisterFiles;
-
- /** Logical counts */
- /*@{*/
- GLuint NumInstructions;
- GLuint NumTemporaries;
- GLuint NumParameters;
- GLuint NumAttributes;
- GLuint NumAddressRegs;
- GLuint NumAluInstructions;
- GLuint NumTexInstructions;
- GLuint NumTexIndirections;
- /*@}*/
- /** Native, actual h/w counts */
- /*@{*/
- GLuint NumNativeInstructions;
- GLuint NumNativeTemporaries;
- GLuint NumNativeParameters;
- GLuint NumNativeAttributes;
- GLuint NumNativeAddressRegs;
- GLuint NumNativeAluInstructions;
- GLuint NumNativeTexInstructions;
- GLuint NumNativeTexIndirections;
- /*@}*/
-};
-
-
-/** Vertex program object */
-struct gl_vertex_program
-{
- struct gl_program Base; /**< base class */
- GLboolean IsNVProgram; /**< is this a GL_NV_vertex_program program? */
- GLboolean IsPositionInvariant;
-};
-
-
-/** Geometry program object */
-struct gl_geometry_program
-{
- struct gl_program Base; /**< base class */
-
- GLint VerticesOut;
- GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
- GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
- GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
-};
-
-
-/** Fragment program object */
-struct gl_fragment_program
-{
- struct gl_program Base; /**< base class */
- GLenum FogOption;
- GLboolean UsesKill; /**< shader uses KIL instruction */
- GLboolean OriginUpperLeft;
- GLboolean PixelCenterInteger;
-};
-
-
-/**
- * State common to vertex and fragment programs.
- */
-struct gl_program_state
-{
- GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
- const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_ARB/NV */
-};
-
-
-/**
- * Context state for vertex programs.
- */
-struct gl_vertex_program_state
-{
- GLboolean Enabled; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
- GLboolean _Enabled; /**< Enabled and _valid_ user program? */
- GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
- GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
- struct gl_vertex_program *Current; /**< User-bound vertex program */
-
- /** Currently enabled and valid vertex program (including internal
- * programs, user-defined vertex programs and GLSL vertex shaders).
- * This is the program we must use when rendering.
- */
- struct gl_vertex_program *_Current;
-
- GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
-
- /* For GL_NV_vertex_program only: */
- GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
- GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
-
- /** Should fixed-function T&L be implemented with a vertex prog? */
- GLboolean _MaintainTnlProgram;
-
- /** Program to emulate fixed-function T&L (see above) */
- struct gl_vertex_program *_TnlProgram;
-
- /** Cache of fixed-function programs */
- struct gl_program_cache *Cache;
-
- GLboolean _Overriden;
-};
-
-
-/**
- * Context state for geometry programs.
- */
-struct gl_geometry_program_state
-{
- GLboolean Enabled; /**< GL_ARB_GEOMETRY_SHADER4 */
- GLboolean _Enabled; /**< Enabled and valid program? */
- struct gl_geometry_program *Current; /**< user-bound geometry program */
-
- /** Currently enabled and valid program (including internal programs
- * and compiled shader programs).
- */
- struct gl_geometry_program *_Current;
-
- GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
-
- /** Cache of fixed-function programs */
- struct gl_program_cache *Cache;
-};
-
-/**
- * Context state for fragment programs.
- */
-struct gl_fragment_program_state
-{
- GLboolean Enabled; /**< User-set fragment program enable flag */
- GLboolean _Enabled; /**< Enabled and _valid_ user program? */
- struct gl_fragment_program *Current; /**< User-bound fragment program */
-
- /** Currently enabled and valid fragment program (including internal
- * programs, user-defined fragment programs and GLSL fragment shaders).
- * This is the program we must use when rendering.
- */
- struct gl_fragment_program *_Current;
-
- GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
-
- /** Should fixed-function texturing be implemented with a fragment prog? */
- GLboolean _MaintainTexEnvProgram;
-
- /** Program to emulate fixed-function texture env/combine (see above) */
- struct gl_fragment_program *_TexEnvProgram;
-
- /** Cache of fixed-function programs */
- struct gl_program_cache *Cache;
-};
-
-
-/**
- * ATI_fragment_shader runtime state
- */
-#define ATI_FS_INPUT_PRIMARY 0
-#define ATI_FS_INPUT_SECONDARY 1
-
-struct atifs_instruction;
-struct atifs_setupinst;
-
-/**
- * ATI fragment shader
- */
-struct ati_fragment_shader
-{
- GLuint Id;
- GLint RefCount;
- struct atifs_instruction *Instructions[2];
- struct atifs_setupinst *SetupInst[2];
- GLfloat Constants[8][4];
- GLbitfield LocalConstDef; /**< Indicates which constants have been set */
- GLubyte numArithInstr[2];
- GLubyte regsAssigned[2];
- GLubyte NumPasses; /**< 1 or 2 */
- GLubyte cur_pass;
- GLubyte last_optype;
- GLboolean interpinp1;
- GLboolean isValid;
- GLuint swizzlerq;
-};
-
-/**
- * Context state for GL_ATI_fragment_shader
- */
-struct gl_ati_fragment_shader_state
-{
- GLboolean Enabled;
- GLboolean _Enabled; /**< enabled and valid shader? */
- GLboolean Compiling;
- GLfloat GlobalConstants[8][4];
- struct ati_fragment_shader *Current;
-};
-
-
-/**
- * Occlusion/timer query object.
- */
-struct gl_query_object
-{
- GLenum Target; /**< The query target, when active */
- GLuint Id; /**< hash table ID/name */
- GLuint64EXT Result; /**< the counter */
- GLboolean Active; /**< inside Begin/EndQuery */
- GLboolean Ready; /**< result is ready? */
-};
-
-
-/**
- * Context state for query objects.
- */
-struct gl_query_state
-{
- struct _mesa_HashTable *QueryObjects;
- struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
- struct gl_query_object *CurrentTimerObject; /* GL_EXT_timer_query */
-
- /** GL_NV_conditional_render */
- struct gl_query_object *CondRenderQuery;
-
- /** GL_EXT_transform_feedback */
- struct gl_query_object *PrimitivesGenerated;
- struct gl_query_object *PrimitivesWritten;
-
- /** GL_ARB_timer_query */
- struct gl_query_object *TimeElapsed;
-
- GLenum CondRenderMode;
-};
-
-
-/** Sync object state */
-struct gl_sync_object {
- struct simple_node link;
- GLenum Type; /**< GL_SYNC_FENCE */
- GLuint Name; /**< Fence name */
- GLint RefCount; /**< Reference count */
- GLboolean DeletePending; /**< Object was deleted while there were still
- * live references (e.g., sync not yet finished)
- */
- GLenum SyncCondition;
- GLbitfield Flags; /**< Flags passed to glFenceSync */
- GLuint StatusFlag:1; /**< Has the sync object been signaled? */
-};
-
-
-/** Set by #pragma directives */
-struct gl_sl_pragmas
-{
- GLboolean IgnoreOptimize; /**< ignore #pragma optimize(on/off) ? */
- GLboolean IgnoreDebug; /**< ignore #pragma debug(on/off) ? */
- GLboolean Optimize; /**< defaults on */
- GLboolean Debug; /**< defaults off */
-};
-
-
-/**
- * A GLSL vertex or fragment shader object.
- */
-struct gl_shader
-{
- GLenum Type; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
- GLuint Name; /**< AKA the handle */
- GLint RefCount; /**< Reference count */
- GLboolean DeletePending;
- GLboolean CompileStatus;
- GLboolean Main; /**< shader defines main() */
- GLboolean UnresolvedRefs;
- const GLchar *Source; /**< Source code string */
- GLuint SourceChecksum; /**< for debug/logging purposes */
- struct gl_program *Program; /**< Post-compile assembly code */
- GLchar *InfoLog;
- struct gl_sl_pragmas Pragmas;
-
- unsigned Version; /**< GLSL version used for linking */
-
- struct exec_list *ir;
- struct glsl_symbol_table *symbols;
-
- /** Shaders containing built-in functions that are used for linking. */
- struct gl_shader *builtins_to_link[16];
- unsigned num_builtins_to_link;
-};
-
-
-/**
- * A GLSL program object.
- * Basically a linked collection of vertex and fragment shaders.
- */
-struct gl_shader_program
-{
- GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */
- GLuint Name; /**< aka handle or ID */
- GLint RefCount; /**< Reference count */
- GLboolean DeletePending;
-
- GLuint NumShaders; /**< number of attached shaders */
- struct gl_shader **Shaders; /**< List of attached the shaders */
-
- /** User-defined attribute bindings (glBindAttribLocation) */
- struct gl_program_parameter_list *Attributes;
-
- /** Transform feedback varyings */
- struct {
- GLenum BufferMode;
- GLuint NumVarying;
- GLchar **VaryingNames; /**< Array [NumVarying] of char * */
- } TransformFeedback;
-
- /** Geometry shader state - copied into gl_geometry_program at link time */
- struct {
- GLint VerticesOut;
- GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
- GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
- GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
- } Geom;
-
- /* post-link info: */
- struct gl_vertex_program *VertexProgram; /**< Linked vertex program */
- struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */
- struct gl_geometry_program *GeometryProgram; /**< Linked geometry prog */
- struct gl_uniform_list *Uniforms;
- struct gl_program_parameter_list *Varying;
- GLboolean LinkStatus; /**< GL_LINK_STATUS */
- GLboolean Validated;
- GLboolean _Used; /**< Ever used for drawing? */
- GLchar *InfoLog;
-
- unsigned Version; /**< GLSL version used for linking */
-
- /**
- * Per-stage shaders resulting from the first stage of linking.
- *
- * Set of linked shaders for this program. The array is accessed using the
- * \c MESA_SHADER_* defines. Entries for non-existent stages will be
- * \c NULL.
- */
- struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES];
-};
-
-
-#define GLSL_DUMP 0x1 /**< Dump shaders to stdout */
-#define GLSL_LOG 0x2 /**< Write shaders to files */
-#define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */
-#define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */
-#define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */
-#define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */
-#define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */
-#define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */
-
-
-/**
- * Context state for GLSL vertex/fragment shaders.
- */
-struct gl_shader_state
-{
- /**
- * Programs used for rendering
- *
- * There is a separate program set for each shader stage. If
- * GL_EXT_separate_shader_objects is not supported, each of these must point
- * to \c NULL or to the same program.
- */
- struct gl_shader_program *CurrentVertexProgram;
- struct gl_shader_program *CurrentGeometryProgram;
- struct gl_shader_program *CurrentFragmentProgram;
-
- /**
- * Program used by glUniform calls.
- *
- * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
- */
- struct gl_shader_program *ActiveProgram;
-
- void *MemPool;
-
- GLbitfield Flags; /**< Mask of GLSL_x flags */
-};
-
-/**
- * Compiler options for a single GLSL shaders type
- */
-struct gl_shader_compiler_options
-{
- /** Driver-selectable options: */
- GLboolean EmitCondCodes; /**< Use condition codes? */
- GLboolean EmitNVTempInitialization; /**< 0-fill NV temp registers */
- /**
- * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't
- * support control flow.
- */
- GLboolean EmitNoIfs;
- GLboolean EmitNoLoops;
- GLboolean EmitNoFunctions;
- GLboolean EmitNoCont; /**< Emit CONT opcode? */
- GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */
- GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */
- GLboolean EmitNoPow; /**< Emit POW opcodes? */
-
- /**
- * \name Forms of indirect addressing the driver cannot do.
- */
- /*@{*/
- GLboolean EmitNoIndirectInput; /**< No indirect addressing of inputs */
- GLboolean EmitNoIndirectOutput; /**< No indirect addressing of outputs */
- GLboolean EmitNoIndirectTemp; /**< No indirect addressing of temps */
- GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
- /*@}*/
-
- GLuint MaxUnrollIterations;
-
- struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
-};
-
-/**
- * Transform feedback object state
- */
-struct gl_transform_feedback_object
-{
- GLuint Name; /**< AKA the object ID */
- GLint RefCount;
- GLboolean Active; /**< Is transform feedback enabled? */
- GLboolean Paused; /**< Is transform feedback paused? */
-
- /** The feedback buffers */
- GLuint BufferNames[MAX_FEEDBACK_ATTRIBS];
- struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS];
-
- /** Start of feedback data in dest buffer */
- GLintptr Offset[MAX_FEEDBACK_ATTRIBS];
- /** Max data to put into dest buffer (in bytes) */
- GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS];
-};
-
-
-/**
- * Context state for transform feedback.
- */
-struct gl_transform_feedback
-{
- GLenum Mode; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
-
- GLboolean RasterDiscard; /**< GL_RASTERIZER_DISCARD */
-
- /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
- struct gl_buffer_object *CurrentBuffer;
-
- /** The table of all transform feedback objects */
- struct _mesa_HashTable *Objects;
-
- /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
- struct gl_transform_feedback_object *CurrentObject;
-
- /** The default xform-fb object (Name==0) */
- struct gl_transform_feedback_object *DefaultObject;
-};
-
-
-
-/**
- * State which can be shared by multiple contexts:
- */
-struct gl_shared_state
-{
- _glthread_Mutex Mutex; /**< for thread safety */
- GLint RefCount; /**< Reference count */
- struct _mesa_HashTable *DisplayList; /**< Display lists hash table */
- struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */
-
- /** Default texture objects (shared by all texture units) */
- struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
-
- /** Fallback texture used when a bound texture is incomplete */
- struct gl_texture_object *FallbackTex;
-
- /**
- * \name Thread safety and statechange notification for texture
- * objects.
- *
- * \todo Improve the granularity of locking.
- */
- /*@{*/
- _glthread_Mutex TexMutex; /**< texobj thread safety */
- GLuint TextureStateStamp; /**< state notification for shared tex */
- /*@}*/
-
- /** Default buffer object for vertex arrays that aren't in VBOs */
- struct gl_buffer_object *NullBufferObj;
-
- /**
- * \name Vertex/geometry/fragment programs
- */
- /*@{*/
- struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
- struct gl_vertex_program *DefaultVertexProgram;
- struct gl_fragment_program *DefaultFragmentProgram;
- struct gl_geometry_program *DefaultGeometryProgram;
- /*@}*/
-
- /* GL_ATI_fragment_shader */
- struct _mesa_HashTable *ATIShaders;
- struct ati_fragment_shader *DefaultFragmentShader;
-
- struct _mesa_HashTable *BufferObjects;
-
- /** Table of both gl_shader and gl_shader_program objects */
- struct _mesa_HashTable *ShaderObjects;
-
- /* GL_EXT_framebuffer_object */
- struct _mesa_HashTable *RenderBuffers;
- struct _mesa_HashTable *FrameBuffers;
-
- /* GL_ARB_sync */
- struct simple_node SyncObjects;
-
- void *DriverData; /**< Device driver shared state */
-};
-
-
-
-
-/**
- * A renderbuffer stores colors or depth values or stencil values.
- * A framebuffer object will have a collection of these.
- * Data are read/written to the buffer with a handful of Get/Put functions.
- *
- * Instances of this object are allocated with the Driver's NewRenderbuffer
- * hook. Drivers will likely wrap this class inside a driver-specific
- * class to simulate inheritance.
- */
-struct gl_renderbuffer
-{
-#define RB_MAGIC 0xaabbccdd
- int Magic; /** XXX TEMPORARY DEBUG INFO */
- _glthread_Mutex Mutex; /**< for thread safety */
- GLuint ClassID; /**< Useful for drivers */
- GLuint Name;
- GLint RefCount;
- GLuint Width, Height;
- GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
-
- GLenum InternalFormat; /**< The user-specified format */
- GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
- GL_STENCIL_INDEX. */
- GLuint Format; /**< The actual format: MESA_FORMAT_x */
-
- GLubyte NumSamples;
-
- GLenum DataType; /**< Type of values passed to the Get/Put functions */
- GLvoid *Data; /**< This may not be used by some kinds of RBs */
-
- /* Used to wrap one renderbuffer around another: */
- struct gl_renderbuffer *Wrapped;
-
- /* Delete this renderbuffer */
- void (*Delete)(struct gl_renderbuffer *rb);
-
- /* Allocate new storage for this renderbuffer */
- GLboolean (*AllocStorage)(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLenum internalFormat,
- GLuint width, GLuint height);
-
- /* Lock/Unlock are called before/after calling the Get/Put functions.
- * Not sure this is the right place for these yet.
- void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
- void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
- */
-
- /* Return a pointer to the element/pixel at (x,y).
- * Should return NULL if the buffer memory can't be directly addressed.
- */
- void *(*GetPointer)(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLint x, GLint y);
-
- /* Get/Read a row of values.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*GetRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, void *values);
-
- /* Get/Read values at arbitrary locations.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*GetValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- const GLint x[], const GLint y[], void *values);
-
- /* Put/Write a row of values.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*PutRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *values, const GLubyte *mask);
-
- /* Put/Write a row of RGB values. This is a special-case routine that's
- * only used for RGBA renderbuffers when the source data is GL_RGB. That's
- * a common case for glDrawPixels and some triangle routines.
- * The values will be of format GL_RGB and type DataType.
- */
- void (*PutRowRGB)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *values, const GLubyte *mask);
-
-
- /* Put/Write a row of identical values.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*PutMonoRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- GLint x, GLint y, const void *value, const GLubyte *mask);
-
- /* Put/Write values at arbitrary locations.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*PutValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
- const GLint x[], const GLint y[], const void *values,
- const GLubyte *mask);
- /* Put/Write identical values at arbitrary locations.
- * The values will be of format _BaseFormat and type DataType.
- */
- void (*PutMonoValues)(struct gl_context *ctx, struct gl_renderbuffer *rb,
- GLuint count, const GLint x[], const GLint y[],
- const void *value, const GLubyte *mask);
-};
-
-
-/**
- * A renderbuffer attachment points to either a texture object (and specifies
- * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
- */
-struct gl_renderbuffer_attachment
-{
- GLenum Type; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
- GLboolean Complete;
-
- /**
- * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
- * application supplied renderbuffer object.
- */
- struct gl_renderbuffer *Renderbuffer;
-
- /**
- * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
- * supplied texture object.
- */
- struct gl_texture_object *Texture;
- GLuint TextureLevel; /**< Attached mipmap level. */
- GLuint CubeMapFace; /**< 0 .. 5, for cube map textures. */
- GLuint Zoffset; /**< Slice for 3D textures, or layer for both 1D
- * and 2D array textures */
-};
-
-
-/**
- * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
- * In C++ terms, think of this as a base class from which device drivers
- * will make derived classes.
- */
-struct gl_framebuffer
-{
- _glthread_Mutex Mutex; /**< for thread safety */
- /**
- * If zero, this is a window system framebuffer. If non-zero, this
- * is a FBO framebuffer; note that for some devices (i.e. those with
- * a natural pixel coordinate system for FBOs that differs from the
- * OpenGL/Mesa coordinate system), this means that the viewport,
- * polygon face orientation, and polygon stipple will have to be inverted.
- */
- GLuint Name;
-
- GLint RefCount;
- GLboolean DeletePending;
-
- /**
- * The framebuffer's visual. Immutable if this is a window system buffer.
- * Computed from attachments if user-made FBO.
- */
- struct gl_config Visual;
-
- GLboolean Initialized;
-
- GLuint Width, Height; /**< size of frame buffer in pixels */
-
- /** \name Drawing bounds (Intersection of buffer size and scissor box) */
- /*@{*/
- GLint _Xmin, _Xmax; /**< inclusive */
- GLint _Ymin, _Ymax; /**< exclusive */
- /*@}*/
-
- /** \name Derived Z buffer stuff */
- /*@{*/
- GLuint _DepthMax; /**< Max depth buffer value */
- GLfloat _DepthMaxF; /**< Float max depth buffer value */
- GLfloat _MRD; /**< minimum resolvable difference in Z values */
- /*@}*/
-
- /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
- GLenum _Status;
-
- /** Integer color values */
- GLboolean _IntegerColor;
-
- /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
- struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
-
- /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
- * attribute group and GL_PIXEL attribute group, respectively.
- */
- GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
- GLenum ColorReadBuffer;
-
- /** Computed from ColorDraw/ReadBuffer above */
- GLuint _NumColorDrawBuffers;
- GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
- GLint _ColorReadBufferIndex; /* -1 = None */
- struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
- struct gl_renderbuffer *_ColorReadBuffer;
-
- /** The Actual depth/stencil buffers to use. May be wrappers around the
- * depth/stencil buffers attached above. */
- struct gl_renderbuffer *_DepthBuffer;
- struct gl_renderbuffer *_StencilBuffer;
-
- /** Delete this framebuffer */
- void (*Delete)(struct gl_framebuffer *fb);
-};
-
-
-/**
- * Limits for vertex and fragment programs/shaders.
- */
-struct gl_program_constants
-{
- /* logical limits */
- GLuint MaxInstructions;
- GLuint MaxAluInstructions;
- GLuint MaxTexInstructions;
- GLuint MaxTexIndirections;
- GLuint MaxAttribs;
- GLuint MaxTemps;
- GLuint MaxAddressRegs;
- GLuint MaxParameters;
- GLuint MaxLocalParams;
- GLuint MaxEnvParams;
- /* native/hardware limits */
- GLuint MaxNativeInstructions;
- GLuint MaxNativeAluInstructions;
- GLuint MaxNativeTexInstructions;
- GLuint MaxNativeTexIndirections;
- GLuint MaxNativeAttribs;
- GLuint MaxNativeTemps;
- GLuint MaxNativeAddressRegs;
- GLuint MaxNativeParameters;
- /* For shaders */
- GLuint MaxUniformComponents;
- /* GL_ARB_geometry_shader4 */
- GLuint MaxGeometryTextureImageUnits;
- GLuint MaxGeometryVaryingComponents;
- GLuint MaxVertexVaryingComponents;
- GLuint MaxGeometryUniformComponents;
- GLuint MaxGeometryOutputVertices;
- GLuint MaxGeometryTotalOutputComponents;
-};
-
-
-/**
- * Constants which may be overridden by device driver during context creation
- * but are never changed after that.
- */
-struct gl_constants
-{
- GLint MaxTextureMbytes; /**< Max memory per image, in MB */
- GLint MaxTextureLevels; /**< Max mipmap levels. */
- GLint Max3DTextureLevels; /**< Max mipmap levels for 3D textures */
- GLint MaxCubeTextureLevels; /**< Max mipmap levels for cube textures */
- GLint MaxArrayTextureLayers; /**< Max layers in array textures */
- GLint MaxTextureRectSize; /**< Max rectangle texture size, in pixes */
- GLuint MaxTextureCoordUnits;
- GLuint MaxTextureImageUnits;
- GLuint MaxVertexTextureImageUnits;
- GLuint MaxCombinedTextureImageUnits;
- GLuint MaxTextureUnits; /**< = MIN(CoordUnits, ImageUnits) */
- GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */
- GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */
-
- GLuint MaxArrayLockSize;
-
- GLint SubPixelBits;
-
- GLfloat MinPointSize, MaxPointSize; /**< aliased */
- GLfloat MinPointSizeAA, MaxPointSizeAA; /**< antialiased */
- GLfloat PointSizeGranularity;
- GLfloat MinLineWidth, MaxLineWidth; /**< aliased */
- GLfloat MinLineWidthAA, MaxLineWidthAA; /**< antialiased */
- GLfloat LineWidthGranularity;
-
- GLuint MaxColorTableSize;
-
- GLuint MaxClipPlanes;
- GLuint MaxLights;
- GLfloat MaxShininess; /**< GL_NV_light_max_exponent */
- GLfloat MaxSpotExponent; /**< GL_NV_light_max_exponent */
-
- GLuint MaxViewportWidth, MaxViewportHeight;
-
- struct gl_program_constants VertexProgram; /**< GL_ARB_vertex_program */
- struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */
- struct gl_program_constants GeometryProgram; /**< GL_ARB_geometry_shader4 */
- GLuint MaxProgramMatrices;
- GLuint MaxProgramMatrixStackDepth;
-
- /** vertex array / buffer object bounds checking */
- GLboolean CheckArrayBounds;
-
- GLuint MaxDrawBuffers; /**< GL_ARB_draw_buffers */
-
- GLuint MaxColorAttachments; /**< GL_EXT_framebuffer_object */
- GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */
- GLuint MaxSamples; /**< GL_ARB_framebuffer_object */
-
- GLuint MaxVarying; /**< Number of float[4] varying parameters */
-
- GLuint GLSLVersion; /**< GLSL version supported (ex: 120 = 1.20) */
-
- /** Which texture units support GL_ATI_envmap_bumpmap as targets */
- GLbitfield SupportedBumpUnits;
-
- /**
- * Maximum amount of time, measured in nanseconds, that the server can wait.
- */
- GLuint64 MaxServerWaitTimeout;
-
- /** GL_EXT_provoking_vertex */
- GLboolean QuadsFollowProvokingVertexConvention;
-
- /** OpenGL version 3.0 */
- GLbitfield ContextFlags; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
-
- /** OpenGL version 3.2 */
- GLbitfield ProfileMask; /**< Mask of CONTEXT_x_PROFILE_BIT */
-
- /** GL_EXT_transform_feedback */
- GLuint MaxTransformFeedbackSeparateAttribs;
- GLuint MaxTransformFeedbackSeparateComponents;
- GLuint MaxTransformFeedbackInterleavedComponents;
-
- /** GL_EXT_gpu_shader4 */
- GLint MinProgramTexelOffset, MaxProgramTexelOffset;
-};
-
-
-/**
- * Enable flag for each OpenGL extension. Different device drivers will
- * enable different extensions at runtime.
- */
-struct gl_extensions
-{
- GLboolean dummy; /* don't remove this! */
- GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */
- GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
- GLboolean ARB_blend_func_extended;
- GLboolean ARB_copy_buffer;
- GLboolean ARB_depth_buffer_float;
- GLboolean ARB_depth_clamp;
- GLboolean ARB_depth_texture;
- GLboolean ARB_draw_buffers;
- GLboolean ARB_draw_elements_base_vertex;
- GLboolean ARB_draw_instanced;
- GLboolean ARB_fragment_coord_conventions;
- GLboolean ARB_fragment_program;
- GLboolean ARB_fragment_program_shadow;
- GLboolean ARB_fragment_shader;
- GLboolean ARB_framebuffer_object;
- GLboolean ARB_explicit_attrib_location;
- GLboolean ARB_geometry_shader4;
- GLboolean ARB_half_float_pixel;
- GLboolean ARB_half_float_vertex;
- GLboolean ARB_instanced_arrays;
- GLboolean ARB_map_buffer_range;
- GLboolean ARB_multisample;
- GLboolean ARB_multitexture;
- GLboolean ARB_occlusion_query;
- GLboolean ARB_occlusion_query2;
- GLboolean ARB_point_sprite;
- GLboolean ARB_sampler_objects;
- GLboolean ARB_seamless_cube_map;
- GLboolean ARB_shader_objects;
- GLboolean ARB_shader_stencil_export;
- GLboolean ARB_shading_language_100;
- GLboolean ARB_shadow;
- GLboolean ARB_shadow_ambient;
- GLboolean ARB_sync;
- GLboolean ARB_texture_border_clamp;
- GLboolean ARB_texture_buffer_object;
- GLboolean ARB_texture_compression;
- GLboolean ARB_texture_compression_rgtc;
- GLboolean ARB_texture_cube_map;
- GLboolean ARB_texture_env_combine;
- GLboolean ARB_texture_env_crossbar;
- GLboolean ARB_texture_env_dot3;
- GLboolean ARB_texture_float;
- GLboolean ARB_texture_mirrored_repeat;
- GLboolean ARB_texture_multisample;
- GLboolean ARB_texture_non_power_of_two;
- GLboolean ARB_texture_rg;
- GLboolean ARB_texture_rgb10_a2ui;
- GLboolean ARB_timer_query;
- GLboolean ARB_transform_feedback2;
- GLboolean ARB_transpose_matrix;
- GLboolean ARB_uniform_buffer_object;
- GLboolean ARB_vertex_array_object;
- GLboolean ARB_vertex_buffer_object;
- GLboolean ARB_vertex_program;
- GLboolean ARB_vertex_shader;
- GLboolean ARB_vertex_type_2_10_10_10_rev;
- GLboolean ARB_window_pos;
- GLboolean EXT_abgr;
- GLboolean EXT_bgra;
- GLboolean EXT_blend_color;
- GLboolean EXT_blend_equation_separate;
- GLboolean EXT_blend_func_separate;
- GLboolean EXT_blend_logic_op;
- GLboolean EXT_blend_minmax;
- GLboolean EXT_blend_subtract;
- GLboolean EXT_clip_volume_hint;
- GLboolean EXT_compiled_vertex_array;
- GLboolean EXT_copy_texture;
- GLboolean EXT_depth_bounds_test;
- GLboolean EXT_draw_buffers2;
- GLboolean EXT_draw_range_elements;
- GLboolean EXT_fog_coord;
- GLboolean EXT_framebuffer_blit;
- GLboolean EXT_framebuffer_multisample;
- GLboolean EXT_framebuffer_object;
- GLboolean EXT_framebuffer_sRGB;
- GLboolean EXT_gpu_program_parameters;
- GLboolean EXT_gpu_shader4;
- GLboolean EXT_multi_draw_arrays;
- GLboolean EXT_paletted_texture;
- GLboolean EXT_packed_depth_stencil;
- GLboolean EXT_packed_float;
- GLboolean EXT_packed_pixels;
- GLboolean EXT_pixel_buffer_object;
- GLboolean EXT_point_parameters;
- GLboolean EXT_polygon_offset;
- GLboolean EXT_provoking_vertex;
- GLboolean EXT_rescale_normal;
- GLboolean EXT_shadow_funcs;
- GLboolean EXT_secondary_color;
- GLboolean EXT_separate_shader_objects;
- GLboolean EXT_separate_specular_color;
- GLboolean EXT_shared_texture_palette;
- GLboolean EXT_stencil_wrap;
- GLboolean EXT_stencil_two_side;
- GLboolean EXT_subtexture;
- GLboolean EXT_texture;
- GLboolean EXT_texture_object;
- GLboolean EXT_texture3D;
- GLboolean EXT_texture_array;
- GLboolean EXT_texture_compression_s3tc;
- GLboolean EXT_texture_env_add;
- GLboolean EXT_texture_env_combine;
- GLboolean EXT_texture_env_dot3;
- GLboolean EXT_texture_filter_anisotropic;
- GLboolean EXT_texture_integer;
- GLboolean EXT_texture_lod_bias;
- GLboolean EXT_texture_mirror_clamp;
- GLboolean EXT_texture_shared_exponent;
- GLboolean EXT_texture_sRGB;
- GLboolean EXT_texture_swizzle;
- GLboolean EXT_transform_feedback;
- GLboolean EXT_timer_query;
- GLboolean EXT_vertex_array;
- GLboolean EXT_vertex_array_bgra;
- GLboolean EXT_vertex_array_set;
- /* vendor extensions */
- GLboolean APPLE_client_storage;
- GLboolean APPLE_packed_pixels;
- GLboolean APPLE_vertex_array_object;
- GLboolean APPLE_object_purgeable;
- GLboolean ATI_envmap_bumpmap;
- GLboolean ATI_texture_mirror_once;
- GLboolean ATI_texture_env_combine3;
- GLboolean ATI_fragment_shader;
- GLboolean ATI_separate_stencil;
- GLboolean IBM_rasterpos_clip;
- GLboolean IBM_multimode_draw_arrays;
- GLboolean MESA_pack_invert;
- GLboolean MESA_resize_buffers;
- GLboolean MESA_ycbcr_texture;
- GLboolean MESA_texture_array;
- GLboolean MESA_texture_signed_rgba;
- GLboolean NV_blend_square;
- GLboolean NV_conditional_render;
- GLboolean NV_fragment_program;
- GLboolean NV_fragment_program_option;
- GLboolean NV_light_max_exponent;
- GLboolean NV_point_sprite;
- GLboolean NV_primitive_restart;
- GLboolean NV_texgen_reflection;
- GLboolean NV_texture_env_combine4;
- GLboolean NV_texture_rectangle;
- GLboolean NV_vertex_program;
- GLboolean NV_vertex_program1_1;
- GLboolean OES_read_format;
- GLboolean SGI_texture_color_table;
- GLboolean SGIS_generate_mipmap;
- GLboolean SGIS_texture_edge_clamp;
- GLboolean SGIS_texture_lod;
- GLboolean TDFX_texture_compression_FXT1;
- GLboolean S3_s3tc;
- GLboolean OES_EGL_image;
- GLboolean OES_draw_texture;
- GLboolean EXT_texture_format_BGRA8888;
- GLboolean extension_sentinel;
- /** The extension string */
- const GLubyte *String;
- /** Number of supported extensions */
- GLuint Count;
-};
-
-
-/**
- * A stack of matrices (projection, modelview, color, texture, etc).
- */
-struct gl_matrix_stack
-{
- GLmatrix *Top; /**< points into Stack */
- GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */
- GLuint Depth; /**< 0 <= Depth < MaxDepth */
- GLuint MaxDepth; /**< size of Stack[] array */
- GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
-};
-
-
-/**
- * \name Bits for image transfer operations
- * \sa __struct gl_contextRec::ImageTransferState.
- */
-/*@{*/
-#define IMAGE_SCALE_BIAS_BIT 0x1
-#define IMAGE_SHIFT_OFFSET_BIT 0x2
-#define IMAGE_MAP_COLOR_BIT 0x4
-#define IMAGE_CLAMP_BIT 0x800
-
-
-/** Pixel Transfer ops */
-#define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \
- IMAGE_SHIFT_OFFSET_BIT | \
- IMAGE_MAP_COLOR_BIT)
-
-/**
- * \name Bits to indicate what state has changed.
- *
- * 4 unused flags.
- */
-/*@{*/
-#define _NEW_MODELVIEW 0x1 /**< __struct gl_contextRec::ModelView */
-#define _NEW_PROJECTION 0x2 /**< __struct gl_contextRec::Projection */
-#define _NEW_TEXTURE_MATRIX 0x4 /**< __struct gl_contextRec::TextureMatrix */
-#define _NEW_ACCUM 0x10 /**< __struct gl_contextRec::Accum */
-#define _NEW_COLOR 0x20 /**< __struct gl_contextRec::Color */
-#define _NEW_DEPTH 0x40 /**< __struct gl_contextRec::Depth */
-#define _NEW_EVAL 0x80 /**< __struct gl_contextRec::Eval, __struct gl_contextRec::EvalMap */
-#define _NEW_FOG 0x100 /**< __struct gl_contextRec::Fog */
-#define _NEW_HINT 0x200 /**< __struct gl_contextRec::Hint */
-#define _NEW_LIGHT 0x400 /**< __struct gl_contextRec::Light */
-#define _NEW_LINE 0x800 /**< __struct gl_contextRec::Line */
-#define _NEW_PIXEL 0x1000 /**< __struct gl_contextRec::Pixel */
-#define _NEW_POINT 0x2000 /**< __struct gl_contextRec::Point */
-#define _NEW_POLYGON 0x4000 /**< __struct gl_contextRec::Polygon */
-#define _NEW_POLYGONSTIPPLE 0x8000 /**< __struct gl_contextRec::PolygonStipple */
-#define _NEW_SCISSOR 0x10000 /**< __struct gl_contextRec::Scissor */
-#define _NEW_STENCIL 0x20000 /**< __struct gl_contextRec::Stencil */
-#define _NEW_TEXTURE 0x40000 /**< __struct gl_contextRec::Texture */
-#define _NEW_TRANSFORM 0x80000 /**< __struct gl_contextRec::Transform */
-#define _NEW_VIEWPORT 0x100000 /**< __struct gl_contextRec::Viewport */
-#define _NEW_PACKUNPACK 0x200000 /**< __struct gl_contextRec::Pack, __struct gl_contextRec::Unpack */
-#define _NEW_ARRAY 0x400000 /**< __struct gl_contextRec::Array */
-#define _NEW_RENDERMODE 0x800000 /**< __struct gl_contextRec::RenderMode, __struct gl_contextRec::Feedback, __struct gl_contextRec::Select */
-#define _NEW_BUFFERS 0x1000000 /**< __struct gl_contextRec::Visual, __struct gl_contextRec::DrawBuffer, */
-#define _NEW_MULTISAMPLE 0x2000000 /**< __struct gl_contextRec::Multisample */
-#define _NEW_TRACK_MATRIX 0x4000000 /**< __struct gl_contextRec::VertexProgram */
-#define _NEW_PROGRAM 0x8000000 /**< __struct gl_contextRec::VertexProgram */
-#define _NEW_CURRENT_ATTRIB 0x10000000 /**< __struct gl_contextRec::Current */
-#define _NEW_PROGRAM_CONSTANTS 0x20000000
-#define _NEW_BUFFER_OBJECT 0x40000000
-#define _NEW_ALL ~0
-/*@}*/
-
-
-/**
- * \name Bits to track array state changes
- *
- * Also used to summarize array enabled.
- */
-/*@{*/
-#define _NEW_ARRAY_VERTEX VERT_BIT_POS
-#define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
-#define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
-#define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
-#define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
-#define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
-#define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX
-#define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG
-#define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */
-#define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
-#define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
-#define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
-#define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
-#define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
-#define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
-#define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
-#define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
-#define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */
-#define _NEW_ARRAY_ALL 0xffffffff
-
-
-#define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
-#define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
-/*@}*/
-
-
-
-/**
- * \name A bunch of flags that we think might be useful to drivers.
- *
- * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
- */
-/*@{*/
-#define DD_FLATSHADE 0x1
-#define DD_SEPARATE_SPECULAR 0x2
-#define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
-#define DD_TRI_LIGHT_TWOSIDE 0x8
-#define DD_TRI_UNFILLED 0x10
-#define DD_TRI_SMOOTH 0x20
-#define DD_TRI_STIPPLE 0x40
-#define DD_TRI_OFFSET 0x80
-#define DD_LINE_SMOOTH 0x100
-#define DD_LINE_STIPPLE 0x200
-#define DD_POINT_SMOOTH 0x400
-#define DD_POINT_ATTEN 0x800
-#define DD_TRI_TWOSTENCIL 0x1000
-/*@}*/
-
-
-/**
- * \name Define the state changes under which each of these bits might change
- */
-/*@{*/
-#define _DD_NEW_FLATSHADE _NEW_LIGHT
-#define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
-#define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
-#define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
-#define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
-#define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
-#define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
-#define _DD_NEW_TRI_OFFSET _NEW_POLYGON
-#define _DD_NEW_LINE_SMOOTH _NEW_LINE
-#define _DD_NEW_LINE_STIPPLE _NEW_LINE
-#define _DD_NEW_LINE_WIDTH _NEW_LINE
-#define _DD_NEW_POINT_SMOOTH _NEW_POINT
-#define _DD_NEW_POINT_SIZE _NEW_POINT
-#define _DD_NEW_POINT_ATTEN _NEW_POINT
-/*@}*/
-
-
-/**
- * Composite state flags
- */
-/*@{*/
-#define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
- _NEW_TEXTURE | \
- _NEW_POINT | \
- _NEW_PROGRAM | \
- _NEW_MODELVIEW)
-
-#define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
- _NEW_TEXTURE)
-
-#define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL)
-/*@}*/
-
-
-
-
-/* This has to be included here. */
-#include "dd.h"
-
-
-/**
- * Display list flags.
- * Strictly this is a tnl-private concept, but it doesn't seem
- * worthwhile adding a tnl private structure just to hold this one bit
- * of information:
- */
-#define DLIST_DANGLING_REFS 0x1
-
-
-/** Opaque declaration of display list payload data type */
-union gl_dlist_node;
-
-
-/**
- * Provide a location where information about a display list can be
- * collected. Could be extended with driverPrivate structures,
- * etc. in the future.
- */
-struct gl_display_list
-{
- GLuint Name;
- GLbitfield Flags; /**< DLIST_x flags */
- /** The dlist commands are in a linked list of nodes */
- union gl_dlist_node *Head;
-};
-
-
-/**
- * State used during display list compilation and execution.
- */
-struct gl_dlist_state
-{
- GLuint CallDepth; /**< Current recursion calling depth */
-
- struct gl_display_list *CurrentList; /**< List currently being compiled */
- union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
- GLuint CurrentPos; /**< Index into current block of nodes */
-
- GLvertexformat ListVtxfmt;
-
- GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
- GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
-
- GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
- GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
-
- GLubyte ActiveIndex;
- GLfloat CurrentIndex;
-
- GLubyte ActiveEdgeFlag;
- GLboolean CurrentEdgeFlag;
-
- struct {
- /* State known to have been set by the currently-compiling display
- * list. Used to eliminate some redundant state changes.
- */
- GLenum ShadeModel;
- } Current;
-};
-
-/**
- * Enum for the OpenGL APIs we know about and may support.
- */
-typedef enum {
- API_OPENGL,
- API_OPENGLES,
- API_OPENGLES2
-} gl_api;
-
-/**
- * Mesa rendering context.
- *
- * This is the central context data structure for Mesa. Almost all
- * OpenGL state is contained in this structure.
- * Think of this as a base class from which device drivers will derive
- * sub classes.
- *
- * The struct gl_context typedef names this structure.
- */
-struct gl_context
-{
- /** State possibly shared with other contexts in the address space */
- struct gl_shared_state *Shared;
-
- /** \name API function pointer tables */
- /*@{*/
- gl_api API;
- struct _glapi_table *Save; /**< Display list save functions */
- struct _glapi_table *Exec; /**< Execute functions */
- struct _glapi_table *CurrentDispatch; /**< == Save or Exec !! */
- /*@}*/
-
- struct gl_config Visual;
- struct gl_framebuffer *DrawBuffer; /**< buffer for writing */
- struct gl_framebuffer *ReadBuffer; /**< buffer for reading */
- struct gl_framebuffer *WinSysDrawBuffer; /**< set with MakeCurrent */
- struct gl_framebuffer *WinSysReadBuffer; /**< set with MakeCurrent */
-
- /**
- * Device driver function pointer table
- */
- struct dd_function_table Driver;
-
- void *DriverCtx; /**< Points to device driver context/state */
-
- /** Core/Driver constants */
- struct gl_constants Const;
-
- /** \name The various 4x4 matrix stacks */
- /*@{*/
- struct gl_matrix_stack ModelviewMatrixStack;
- struct gl_matrix_stack ProjectionMatrixStack;
- struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
- struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
- struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
- /*@}*/
-
- /** Combined modelview and projection matrix */
- GLmatrix _ModelProjectMatrix;
-
- /** \name Display lists */
- struct gl_dlist_state ListState;
-
- GLboolean ExecuteFlag; /**< Execute GL commands? */
- GLboolean CompileFlag; /**< Compile GL commands into display list? */
-
- /** Extension information */
- struct gl_extensions Extensions;
-
- /** Version info */
- GLuint VersionMajor, VersionMinor;
- char *VersionString;
-
- /** \name State attribute stack (for glPush/PopAttrib) */
- /*@{*/
- GLuint AttribStackDepth;
- struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
- /*@}*/
-
- /** \name Renderer attribute groups
- *
- * We define a struct for each attribute group to make pushing and popping
- * attributes easy. Also it's a good organization.
- */
- /*@{*/
- struct gl_accum_attrib Accum; /**< Accum buffer attributes */
- struct gl_colorbuffer_attrib Color; /**< Color buffer attributes */
- struct gl_current_attrib Current; /**< Current attributes */
- struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */
- struct gl_eval_attrib Eval; /**< Eval attributes */
- struct gl_fog_attrib Fog; /**< Fog attributes */
- struct gl_hint_attrib Hint; /**< Hint attributes */
- struct gl_light_attrib Light; /**< Light attributes */
- struct gl_line_attrib Line; /**< Line attributes */
- struct gl_list_attrib List; /**< List attributes */
- struct gl_multisample_attrib Multisample;
- struct gl_pixel_attrib Pixel; /**< Pixel attributes */
- struct gl_point_attrib Point; /**< Point attributes */
- struct gl_polygon_attrib Polygon; /**< Polygon attributes */
- GLuint PolygonStipple[32]; /**< Polygon stipple */
- struct gl_scissor_attrib Scissor; /**< Scissor attributes */
- struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */
- struct gl_texture_attrib Texture; /**< Texture attributes */
- struct gl_transform_attrib Transform; /**< Transformation attributes */
- struct gl_viewport_attrib Viewport; /**< Viewport attributes */
- /*@}*/
-
- /** \name Client attribute stack */
- /*@{*/
- GLuint ClientAttribStackDepth;
- struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
- /*@}*/
-
- /** \name Client attribute groups */
- /*@{*/
- struct gl_array_attrib Array; /**< Vertex arrays */
- struct gl_pixelstore_attrib Pack; /**< Pixel packing */
- struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */
- struct gl_pixelstore_attrib DefaultPacking; /**< Default params */
- /*@}*/
-
- /** \name Other assorted state (not pushed/popped on attribute stack) */
- /*@{*/
- struct gl_pixelmaps PixelMaps;
-
- struct gl_evaluators EvalMap; /**< All evaluators */
- struct gl_feedback Feedback; /**< Feedback */
- struct gl_selection Select; /**< Selection */
-
- struct gl_program_state Program; /**< general program state */
- struct gl_vertex_program_state VertexProgram;
- struct gl_fragment_program_state FragmentProgram;
- struct gl_geometry_program_state GeometryProgram;
- struct gl_ati_fragment_shader_state ATIFragmentShader;
-
- struct gl_shader_state Shader; /**< GLSL shader object state */
- struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES];
-
- struct gl_query_state Query; /**< occlusion, timer queries */
-
- struct gl_transform_feedback TransformFeedback;
-
- struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
- struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
- /*@}*/
-
- struct gl_meta_state *Meta; /**< for "meta" operations */
-
- /* GL_EXT_framebuffer_object */
- struct gl_renderbuffer *CurrentRenderbuffer;
-
- GLenum ErrorValue; /**< Last error code */
-
- /**
- * Recognize and silence repeated error debug messages in buggy apps.
- */
- const char *ErrorDebugFmtString;
- GLuint ErrorDebugCount;
-
- GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
- GLbitfield NewState; /**< bitwise-or of _NEW_* flags */
-
- GLboolean ViewportInitialized; /**< has viewport size been initialized? */
-
- GLbitfield varying_vp_inputs; /**< mask of VERT_BIT_* flags */
-
- /** \name Derived state */
- /*@{*/
- /** Bitwise-or of DD_* flags. Note that this bitfield may be used before
- * state validation so they need to always be current.
- */
- GLbitfield _TriangleCaps;
- GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
- GLfloat _EyeZDir[3];
- GLfloat _ModelViewInvScale;
- GLboolean _NeedEyeCoords;
- GLboolean _ForceEyeCoords;
-
- GLuint TextureStateTimestamp; /**< detect changes to shared state */
-
- struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
- struct gl_shine_tab *_ShineTabList; /**< MRU list of inactive shine tables */
- /**@}*/
-
- struct gl_list_extensions *ListExt; /**< driver dlist extensions */
-
- /** \name For debugging/development only */
- /*@{*/
- GLboolean FirstTimeCurrent;
- /*@}*/
-
- /** Dither disable via MESA_NO_DITHER env var */
- GLboolean NoDither;
-
- /** software compression/decompression supported or not */
- GLboolean Mesa_DXTn;
-
- GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
-
- /**
- * Use dp4 (rather than mul/mad) instructions for position
- * transformation?
- */
- GLboolean mvp_with_dp4;
-
- /**
- * \name Hooks for module contexts.
- *
- * These will eventually live in the driver or elsewhere.
- */
- /*@{*/
- void *swrast_context;
- void *swsetup_context;
- void *swtnl_context;
- void *swtnl_im;
- struct st_context *st;
- void *aelt_context;
- /*@}*/
-};
-
-
-/** The string names for GL_POINT, GL_LINE_LOOP, etc */
-extern const char *_mesa_prim_name[GL_POLYGON+4];
-
-
-#ifdef DEBUG
-extern int MESA_VERBOSE;
-extern int MESA_DEBUG_FLAGS;
-# define MESA_FUNCTION __FUNCTION__
-#else
-# define MESA_VERBOSE 0
-# define MESA_DEBUG_FLAGS 0
-# define MESA_FUNCTION "a function"
-# ifndef NDEBUG
-# define NDEBUG
-# endif
-#endif
-
-
-/** The MESA_VERBOSE var is a bitmask of these flags */
-enum _verbose
-{
- VERBOSE_VARRAY = 0x0001,
- VERBOSE_TEXTURE = 0x0002,
- VERBOSE_MATERIAL = 0x0004,
- VERBOSE_PIPELINE = 0x0008,
- VERBOSE_DRIVER = 0x0010,
- VERBOSE_STATE = 0x0020,
- VERBOSE_API = 0x0040,
- VERBOSE_DISPLAY_LIST = 0x0100,
- VERBOSE_LIGHTING = 0x0200,
- VERBOSE_PRIMS = 0x0400,
- VERBOSE_VERTS = 0x0800,
- VERBOSE_DISASSEM = 0x1000,
- VERBOSE_DRAW = 0x2000,
- VERBOSE_SWAPBUFFERS = 0x4000
-};
-
-
-/** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
-enum _debug
-{
- DEBUG_ALWAYS_FLUSH = 0x1
-};
-
-
-
-#endif /* MTYPES_H */
+/* + * Mesa 3-D graphics library + * Version: 7.7 + * + * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. + * Copyright (C) 2009 VMware, Inc. All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN + * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +/** + * \file mtypes.h + * Main Mesa data structures. + * + * Please try to mark derived values with a leading underscore ('_'). + */ + +#ifndef MTYPES_H +#define MTYPES_H + + +#include "main/glheader.h" +#include "main/config.h" +#include "main/mfeatures.h" +#include "glapi/glapi.h" +#include "math/m_matrix.h" /* GLmatrix */ +#include "main/simple_list.h" /* struct simple_node */ +#include "main/formats.h" /* MESA_FORMAT_COUNT */ + + +/** + * Color channel data type. + */ +#if CHAN_BITS == 8 + typedef GLubyte GLchan; +#define CHAN_MAX 255 +#define CHAN_MAXF 255.0F +#define CHAN_TYPE GL_UNSIGNED_BYTE +#elif CHAN_BITS == 16 + typedef GLushort GLchan; +#define CHAN_MAX 65535 +#define CHAN_MAXF 65535.0F +#define CHAN_TYPE GL_UNSIGNED_SHORT +#elif CHAN_BITS == 32 + typedef GLfloat GLchan; +#define CHAN_MAX 1.0 +#define CHAN_MAXF 1.0F +#define CHAN_TYPE GL_FLOAT +#else +#error "illegal number of color channel bits" +#endif + + +/** + * Stencil buffer data type. + */ +#if STENCIL_BITS==8 + typedef GLubyte GLstencil; +#elif STENCIL_BITS==16 + typedef GLushort GLstencil; +#else +# error "illegal number of stencil bits" +#endif + + +/** + * \name 64-bit extension of GLbitfield. + */ +/*@{*/ +typedef GLuint64 GLbitfield64; + +#define BITFIELD64_ONE 1ULL +#define BITFIELD64_ALLONES ~0ULL + +/** Set a single bit */ +#define BITFIELD64_BIT(b) (BITFIELD64_ONE << (b)) + +/** Set a mask of the least significant \c b bits */ +#define BITFIELD64_MASK(b) (((b) >= 64) ? BITFIELD64_ALLONES : \ + (BITFIELD64_BIT(b) - 1)) + +/** + * Set all bits from l (low bit) to h (high bit), inclusive. + * + * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits. + */ +#define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l)) +/*@}*/ + + +/** + * \name Some forward type declarations + */ +/*@{*/ +struct _mesa_HashTable; +struct gl_attrib_node; +struct gl_list_extensions; +struct gl_meta_state; +struct gl_pixelstore_attrib; +struct gl_program_cache; +struct gl_texture_format; +struct gl_texture_image; +struct gl_texture_object; +struct gl_context; +struct st_context; +/*@}*/ + + + +/** + * Shader stages. Note that these will become 5 with tessellation. + * These MUST have the same values as gallium's PIPE_SHADER_* + */ +typedef enum +{ + MESA_SHADER_VERTEX = 0, + MESA_SHADER_FRAGMENT = 1, + MESA_SHADER_GEOMETRY = 2, + MESA_SHADER_TYPES = 3 +} gl_shader_type; + + + +/** + * Indexes for vertex program attributes. + * GL_NV_vertex_program aliases generic attributes over the conventional + * attributes. In GL_ARB_vertex_program shader the aliasing is optional. + * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the + * generic attributes are distinct/separate). + */ +typedef enum +{ + VERT_ATTRIB_POS = 0, + VERT_ATTRIB_WEIGHT = 1, + VERT_ATTRIB_NORMAL = 2, + VERT_ATTRIB_COLOR0 = 3, + VERT_ATTRIB_COLOR1 = 4, + VERT_ATTRIB_FOG = 5, + VERT_ATTRIB_COLOR_INDEX = 6, + VERT_ATTRIB_POINT_SIZE = 6, /*alias*/ + VERT_ATTRIB_EDGEFLAG = 7, + VERT_ATTRIB_TEX0 = 8, + VERT_ATTRIB_TEX1 = 9, + VERT_ATTRIB_TEX2 = 10, + VERT_ATTRIB_TEX3 = 11, + VERT_ATTRIB_TEX4 = 12, + VERT_ATTRIB_TEX5 = 13, + VERT_ATTRIB_TEX6 = 14, + VERT_ATTRIB_TEX7 = 15, + VERT_ATTRIB_GENERIC0 = 16, + VERT_ATTRIB_GENERIC1 = 17, + VERT_ATTRIB_GENERIC2 = 18, + VERT_ATTRIB_GENERIC3 = 19, + VERT_ATTRIB_GENERIC4 = 20, + VERT_ATTRIB_GENERIC5 = 21, + VERT_ATTRIB_GENERIC6 = 22, + VERT_ATTRIB_GENERIC7 = 23, + VERT_ATTRIB_GENERIC8 = 24, + VERT_ATTRIB_GENERIC9 = 25, + VERT_ATTRIB_GENERIC10 = 26, + VERT_ATTRIB_GENERIC11 = 27, + VERT_ATTRIB_GENERIC12 = 28, + VERT_ATTRIB_GENERIC13 = 29, + VERT_ATTRIB_GENERIC14 = 30, + VERT_ATTRIB_GENERIC15 = 31, + VERT_ATTRIB_MAX = 32 +} gl_vert_attrib; + +/** + * Bitflags for vertex attributes. + * These are used in bitfields in many places. + */ +/*@{*/ +#define VERT_BIT_POS (1 << VERT_ATTRIB_POS) +#define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT) +#define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL) +#define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0) +#define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1) +#define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG) +#define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX) +#define VERT_BIT_EDGEFLAG (1 << VERT_ATTRIB_EDGEFLAG) +#define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0) +#define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1) +#define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2) +#define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3) +#define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4) +#define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5) +#define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6) +#define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7) +#define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0) +#define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1) +#define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2) +#define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3) +#define VERT_BIT_GENERIC4 (1 << VERT_ATTRIB_GENERIC4) +#define VERT_BIT_GENERIC5 (1 << VERT_ATTRIB_GENERIC5) +#define VERT_BIT_GENERIC6 (1 << VERT_ATTRIB_GENERIC6) +#define VERT_BIT_GENERIC7 (1 << VERT_ATTRIB_GENERIC7) +#define VERT_BIT_GENERIC8 (1 << VERT_ATTRIB_GENERIC8) +#define VERT_BIT_GENERIC9 (1 << VERT_ATTRIB_GENERIC9) +#define VERT_BIT_GENERIC10 (1 << VERT_ATTRIB_GENERIC10) +#define VERT_BIT_GENERIC11 (1 << VERT_ATTRIB_GENERIC11) +#define VERT_BIT_GENERIC12 (1 << VERT_ATTRIB_GENERIC12) +#define VERT_BIT_GENERIC13 (1 << VERT_ATTRIB_GENERIC13) +#define VERT_BIT_GENERIC14 (1 << VERT_ATTRIB_GENERIC14) +#define VERT_BIT_GENERIC15 (1 << VERT_ATTRIB_GENERIC15) + +#define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u))) +#define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g))) +/*@}*/ + + +/** + * Indexes for vertex program result attributes + */ +typedef enum +{ + VERT_RESULT_HPOS = 0, + VERT_RESULT_COL0 = 1, + VERT_RESULT_COL1 = 2, + VERT_RESULT_FOGC = 3, + VERT_RESULT_TEX0 = 4, + VERT_RESULT_TEX1 = 5, + VERT_RESULT_TEX2 = 6, + VERT_RESULT_TEX3 = 7, + VERT_RESULT_TEX4 = 8, + VERT_RESULT_TEX5 = 9, + VERT_RESULT_TEX6 = 10, + VERT_RESULT_TEX7 = 11, + VERT_RESULT_PSIZ = 12, + VERT_RESULT_BFC0 = 13, + VERT_RESULT_BFC1 = 14, + VERT_RESULT_EDGE = 15, + VERT_RESULT_VAR0 = 16, /**< shader varying */ + VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING) +} gl_vert_result; + + +/*********************************************/ + +/** + * Indexes for geometry program attributes. + */ +typedef enum +{ + GEOM_ATTRIB_POSITION = 0, + GEOM_ATTRIB_COLOR0 = 1, + GEOM_ATTRIB_COLOR1 = 2, + GEOM_ATTRIB_SECONDARY_COLOR0 = 3, + GEOM_ATTRIB_SECONDARY_COLOR1 = 4, + GEOM_ATTRIB_FOG_FRAG_COORD = 5, + GEOM_ATTRIB_POINT_SIZE = 6, + GEOM_ATTRIB_CLIP_VERTEX = 7, + GEOM_ATTRIB_PRIMITIVE_ID = 8, + GEOM_ATTRIB_TEX_COORD = 9, + + GEOM_ATTRIB_VAR0 = 16, + GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING) +} gl_geom_attrib; + +/** + * Bitflags for geometry attributes. + * These are used in bitfields in many places. + */ +/*@{*/ +#define GEOM_BIT_COLOR0 (1 << GEOM_ATTRIB_COLOR0) +#define GEOM_BIT_COLOR1 (1 << GEOM_ATTRIB_COLOR1) +#define GEOM_BIT_SCOLOR0 (1 << GEOM_ATTRIB_SECONDARY_COLOR0) +#define GEOM_BIT_SCOLOR1 (1 << GEOM_ATTRIB_SECONDARY_COLOR1) +#define GEOM_BIT_TEX_COORD (1 << GEOM_ATTRIB_TEX_COORD) +#define GEOM_BIT_FOG_COORD (1 << GEOM_ATTRIB_FOG_FRAG_COORD) +#define GEOM_BIT_POSITION (1 << GEOM_ATTRIB_POSITION) +#define GEOM_BIT_POINT_SIDE (1 << GEOM_ATTRIB_POINT_SIZE) +#define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX) +#define GEOM_BIT_PRIM_ID (1 << GEOM_ATTRIB_PRIMITIVE_ID) +#define GEOM_BIT_VAR0 (1 << GEOM_ATTRIB_VAR0) + +#define GEOM_BIT_VAR(g) (1 << (GEOM_BIT_VAR0 + (g))) +/*@}*/ + + +/** + * Indexes for geometry program result attributes + */ +/*@{*/ +typedef enum { + GEOM_RESULT_POS = 0, + GEOM_RESULT_COL0 = 1, + GEOM_RESULT_COL1 = 2, + GEOM_RESULT_SCOL0 = 3, + GEOM_RESULT_SCOL1 = 4, + GEOM_RESULT_FOGC = 5, + GEOM_RESULT_TEX0 = 6, + GEOM_RESULT_TEX1 = 7, + GEOM_RESULT_TEX2 = 8, + GEOM_RESULT_TEX3 = 9, + GEOM_RESULT_TEX4 = 10, + GEOM_RESULT_TEX5 = 11, + GEOM_RESULT_TEX6 = 12, + GEOM_RESULT_TEX7 = 13, + GEOM_RESULT_PSIZ = 14, + GEOM_RESULT_CLPV = 15, + GEOM_RESULT_PRID = 16, + GEOM_RESULT_LAYR = 17, + GEOM_RESULT_VAR0 = 18, /**< shader varying, should really be 16 */ + /* ### we need to -2 because var0 is 18 instead 16 like in the others */ + GEOM_RESULT_MAX = (GEOM_RESULT_VAR0 + MAX_VARYING - 2) +} gl_geom_result; +/*@}*/ + +/** + * Indexes for fragment program input attributes. + */ +typedef enum +{ + FRAG_ATTRIB_WPOS = 0, + FRAG_ATTRIB_COL0 = 1, + FRAG_ATTRIB_COL1 = 2, + FRAG_ATTRIB_FOGC = 3, + FRAG_ATTRIB_TEX0 = 4, + FRAG_ATTRIB_TEX1 = 5, + FRAG_ATTRIB_TEX2 = 6, + FRAG_ATTRIB_TEX3 = 7, + FRAG_ATTRIB_TEX4 = 8, + FRAG_ATTRIB_TEX5 = 9, + FRAG_ATTRIB_TEX6 = 10, + FRAG_ATTRIB_TEX7 = 11, + FRAG_ATTRIB_FACE = 12, /**< front/back face */ + FRAG_ATTRIB_PNTC = 13, /**< sprite/point coord */ + FRAG_ATTRIB_VAR0 = 14, /**< shader varying */ + FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING) +} gl_frag_attrib; + +/** + * Bitflags for fragment program input attributes. + */ +/*@{*/ +#define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS) +#define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0) +#define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1) +#define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC) +#define FRAG_BIT_FACE (1 << FRAG_ATTRIB_FACE) +#define FRAG_BIT_PNTC (1 << FRAG_ATTRIB_PNTC) +#define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0) +#define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1) +#define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2) +#define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3) +#define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4) +#define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5) +#define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6) +#define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7) +#define FRAG_BIT_VAR0 (1 << FRAG_ATTRIB_VAR0) + +#define FRAG_BIT_TEX(U) (FRAG_BIT_TEX0 << (U)) +#define FRAG_BIT_VAR(V) (FRAG_BIT_VAR0 << (V)) + +#define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \ + FRAG_BIT_TEX1| \ + FRAG_BIT_TEX2| \ + FRAG_BIT_TEX3| \ + FRAG_BIT_TEX4| \ + FRAG_BIT_TEX5| \ + FRAG_BIT_TEX6| \ + FRAG_BIT_TEX7) +/*@}*/ + + +/** + * Fragment program results + */ +typedef enum +{ + FRAG_RESULT_DEPTH = 0, + FRAG_RESULT_STENCIL = 1, + FRAG_RESULT_COLOR = 2, + FRAG_RESULT_DATA0 = 3, + FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS) +} gl_frag_result; + + +/** + * Indexes for all renderbuffers + */ +typedef enum +{ + /* the four standard color buffers */ + BUFFER_FRONT_LEFT, + BUFFER_BACK_LEFT, + BUFFER_FRONT_RIGHT, + BUFFER_BACK_RIGHT, + BUFFER_DEPTH, + BUFFER_STENCIL, + BUFFER_ACCUM, + /* optional aux buffer */ + BUFFER_AUX0, + /* generic renderbuffers */ + BUFFER_COLOR0, + BUFFER_COLOR1, + BUFFER_COLOR2, + BUFFER_COLOR3, + BUFFER_COLOR4, + BUFFER_COLOR5, + BUFFER_COLOR6, + BUFFER_COLOR7, + BUFFER_COUNT +} gl_buffer_index; + +/** + * Bit flags for all renderbuffers + */ +#define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT) +#define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT) +#define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT) +#define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT) +#define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0) +#define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1) +#define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2) +#define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3) +#define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH) +#define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL) +#define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM) +#define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0) +#define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1) +#define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2) +#define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3) +#define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4) +#define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5) +#define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6) +#define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7) + +/** + * Mask of all the color buffer bits (but not accum). + */ +#define BUFFER_BITS_COLOR (BUFFER_BIT_FRONT_LEFT | \ + BUFFER_BIT_BACK_LEFT | \ + BUFFER_BIT_FRONT_RIGHT | \ + BUFFER_BIT_BACK_RIGHT | \ + BUFFER_BIT_AUX0 | \ + BUFFER_BIT_COLOR0 | \ + BUFFER_BIT_COLOR1 | \ + BUFFER_BIT_COLOR2 | \ + BUFFER_BIT_COLOR3 | \ + BUFFER_BIT_COLOR4 | \ + BUFFER_BIT_COLOR5 | \ + BUFFER_BIT_COLOR6 | \ + BUFFER_BIT_COLOR7) + + +/** + * Framebuffer configuration (aka visual / pixelformat) + * Note: some of these fields should be boolean, but it appears that + * code in drivers/dri/common/util.c requires int-sized fields. + */ +struct gl_config +{ + GLboolean rgbMode; + GLboolean floatMode; + GLboolean colorIndexMode; /* XXX is this used anywhere? */ + GLuint doubleBufferMode; + GLuint stereoMode; + + GLboolean haveAccumBuffer; + GLboolean haveDepthBuffer; + GLboolean haveStencilBuffer; + + GLint redBits, greenBits, blueBits, alphaBits; /* bits per comp */ + GLuint redMask, greenMask, blueMask, alphaMask; + GLint rgbBits; /* total bits for rgb */ + GLint indexBits; /* total bits for colorindex */ + + GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits; + GLint depthBits; + GLint stencilBits; + + GLint numAuxBuffers; + + GLint level; + + /* EXT_visual_rating / GLX 1.2 */ + GLint visualRating; + + /* EXT_visual_info / GLX 1.2 */ + GLint transparentPixel; + /* colors are floats scaled to ints */ + GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha; + GLint transparentIndex; + + /* ARB_multisample / SGIS_multisample */ + GLint sampleBuffers; + GLint samples; + + /* SGIX_pbuffer / GLX 1.3 */ + GLint maxPbufferWidth; + GLint maxPbufferHeight; + GLint maxPbufferPixels; + GLint optimalPbufferWidth; /* Only for SGIX_pbuffer. */ + GLint optimalPbufferHeight; /* Only for SGIX_pbuffer. */ + + /* OML_swap_method */ + GLint swapMethod; + + /* EXT_texture_from_pixmap */ + GLint bindToTextureRgb; + GLint bindToTextureRgba; + GLint bindToMipmapTexture; + GLint bindToTextureTargets; + GLint yInverted; +}; + + +/** + * Data structure for color tables + */ +struct gl_color_table +{ + GLenum InternalFormat; /**< The user-specified format */ + GLenum _BaseFormat; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */ + GLuint Size; /**< number of entries in table */ + GLfloat *TableF; /**< Color table, floating point values */ + GLubyte *TableUB; /**< Color table, ubyte values */ + GLubyte RedSize; + GLubyte GreenSize; + GLubyte BlueSize; + GLubyte AlphaSize; + GLubyte LuminanceSize; + GLubyte IntensitySize; +}; + + +/** + * \name Bit flags used for updating material values. + */ +/*@{*/ +#define MAT_ATTRIB_FRONT_AMBIENT 0 +#define MAT_ATTRIB_BACK_AMBIENT 1 +#define MAT_ATTRIB_FRONT_DIFFUSE 2 +#define MAT_ATTRIB_BACK_DIFFUSE 3 +#define MAT_ATTRIB_FRONT_SPECULAR 4 +#define MAT_ATTRIB_BACK_SPECULAR 5 +#define MAT_ATTRIB_FRONT_EMISSION 6 +#define MAT_ATTRIB_BACK_EMISSION 7 +#define MAT_ATTRIB_FRONT_SHININESS 8 +#define MAT_ATTRIB_BACK_SHININESS 9 +#define MAT_ATTRIB_FRONT_INDEXES 10 +#define MAT_ATTRIB_BACK_INDEXES 11 +#define MAT_ATTRIB_MAX 12 + +#define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f)) +#define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f)) +#define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f)) +#define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f)) +#define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f)) +#define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f)) + +#define MAT_INDEX_AMBIENT 0 +#define MAT_INDEX_DIFFUSE 1 +#define MAT_INDEX_SPECULAR 2 + +#define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT) +#define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT) +#define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE) +#define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE) +#define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR) +#define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR) +#define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION) +#define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION) +#define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS) +#define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS) +#define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES) +#define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES) + + +#define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \ + MAT_BIT_FRONT_AMBIENT | \ + MAT_BIT_FRONT_DIFFUSE | \ + MAT_BIT_FRONT_SPECULAR | \ + MAT_BIT_FRONT_SHININESS | \ + MAT_BIT_FRONT_INDEXES) + +#define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \ + MAT_BIT_BACK_AMBIENT | \ + MAT_BIT_BACK_DIFFUSE | \ + MAT_BIT_BACK_SPECULAR | \ + MAT_BIT_BACK_SHININESS | \ + MAT_BIT_BACK_INDEXES) + +#define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS) +/*@}*/ + + +#define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */ +#define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */ + +/** + * Material shininess lookup table. + */ +struct gl_shine_tab +{ + struct gl_shine_tab *next, *prev; + GLfloat tab[SHINE_TABLE_SIZE+1]; + GLfloat shininess; + GLuint refcount; +}; + + +/** + * Light source state. + */ +struct gl_light +{ + struct gl_light *next; /**< double linked list with sentinel */ + struct gl_light *prev; + + GLfloat Ambient[4]; /**< ambient color */ + GLfloat Diffuse[4]; /**< diffuse color */ + GLfloat Specular[4]; /**< specular color */ + GLfloat EyePosition[4]; /**< position in eye coordinates */ + GLfloat SpotDirection[4]; /**< spotlight direction in eye coordinates */ + GLfloat SpotExponent; + GLfloat SpotCutoff; /**< in degrees */ + GLfloat _CosCutoffNeg; /**< = cos(SpotCutoff) */ + GLfloat _CosCutoff; /**< = MAX(0, cos(SpotCutoff)) */ + GLfloat ConstantAttenuation; + GLfloat LinearAttenuation; + GLfloat QuadraticAttenuation; + GLboolean Enabled; /**< On/off flag */ + + /** + * \name Derived fields + */ + /*@{*/ + GLbitfield _Flags; /**< State */ + + GLfloat _Position[4]; /**< position in eye/obj coordinates */ + GLfloat _VP_inf_norm[3]; /**< Norm direction to infinite light */ + GLfloat _h_inf_norm[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */ + GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */ + GLfloat _VP_inf_spot_attenuation; + + GLfloat _SpotExpTable[EXP_TABLE_SIZE][2]; /**< to replace a pow() call */ + GLfloat _MatAmbient[2][3]; /**< material ambient * light ambient */ + GLfloat _MatDiffuse[2][3]; /**< material diffuse * light diffuse */ + GLfloat _MatSpecular[2][3]; /**< material spec * light specular */ + GLfloat _dli; /**< CI diffuse light intensity */ + GLfloat _sli; /**< CI specular light intensity */ + /*@}*/ +}; + + +/** + * Light model state. + */ +struct gl_lightmodel +{ + GLfloat Ambient[4]; /**< ambient color */ + GLboolean LocalViewer; /**< Local (or infinite) view point? */ + GLboolean TwoSide; /**< Two (or one) sided lighting? */ + GLenum ColorControl; /**< either GL_SINGLE_COLOR + * or GL_SEPARATE_SPECULAR_COLOR */ +}; + + +/** + * Material state. + */ +struct gl_material +{ + GLfloat Attrib[MAT_ATTRIB_MAX][4]; +}; + + +/** + * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT) + */ +struct gl_accum_attrib +{ + GLfloat ClearColor[4]; /**< Accumulation buffer clear color */ +}; + + +/** + * Color buffer attribute group (GL_COLOR_BUFFER_BIT). + */ +struct gl_colorbuffer_attrib +{ + GLuint ClearIndex; /**< Index to use for glClear */ + GLclampf ClearColor[4]; /**< Color to use for glClear */ + + GLuint IndexMask; /**< Color index write mask */ + GLubyte ColorMask[MAX_DRAW_BUFFERS][4];/**< Each flag is 0xff or 0x0 */ + + GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */ + + /** + * \name alpha testing + */ + /*@{*/ + GLboolean AlphaEnabled; /**< Alpha test enabled flag */ + GLenum AlphaFunc; /**< Alpha test function */ + GLclampf AlphaRef; /**< Alpha reference value */ + /*@}*/ + + /** + * \name Blending + */ + /*@{*/ + GLbitfield BlendEnabled; /**< Per-buffer blend enable flags */ + GLenum BlendSrcRGB; /**< Blending source operator */ + GLenum BlendDstRGB; /**< Blending destination operator */ + GLenum BlendSrcA; /**< GL_INGR_blend_func_separate */ + GLenum BlendDstA; /**< GL_INGR_blend_func_separate */ + GLenum BlendEquationRGB; /**< Blending equation */ + GLenum BlendEquationA; /**< GL_EXT_blend_equation_separate */ + GLfloat BlendColor[4]; /**< Blending color */ + /*@}*/ + + /** + * \name Logic op + */ + /*@{*/ + GLenum LogicOp; /**< Logic operator */ + GLboolean IndexLogicOpEnabled; /**< Color index logic op enabled flag */ + GLboolean ColorLogicOpEnabled; /**< RGBA logic op enabled flag */ + GLboolean _LogicOpEnabled; /**< RGBA logic op + EXT_blend_logic_op enabled flag */ + /*@}*/ + + GLboolean DitherFlag; /**< Dither enable flag */ + + GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */ + GLenum ClampReadColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */ +}; + + +/** + * Current attribute group (GL_CURRENT_BIT). + */ +struct gl_current_attrib +{ + /** + * \name Current vertex attributes. + * \note Values are valid only after FLUSH_VERTICES has been called. + * \note Index and Edgeflag current values are stored as floats in the + * SIX and SEVEN attribute slots. + */ + GLfloat Attrib[VERT_ATTRIB_MAX][4]; /**< Position, color, texcoords, etc */ + + /** + * \name Current raster position attributes (always valid). + * \note This set of attributes is very similar to the SWvertex struct. + */ + /*@{*/ + GLfloat RasterPos[4]; + GLfloat RasterDistance; + GLfloat RasterColor[4]; + GLfloat RasterSecondaryColor[4]; + GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4]; + GLboolean RasterPosValid; + /*@}*/ +}; + + +/** + * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT). + */ +struct gl_depthbuffer_attrib +{ + GLenum Func; /**< Function for depth buffer compare */ + GLclampd Clear; /**< Value to clear depth buffer to */ + GLboolean Test; /**< Depth buffering enabled flag */ + GLboolean Mask; /**< Depth buffer writable? */ + GLboolean BoundsTest; /**< GL_EXT_depth_bounds_test */ + GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */ +}; + + +/** + * Evaluator attribute group (GL_EVAL_BIT). + */ +struct gl_eval_attrib +{ + /** + * \name Enable bits + */ + /*@{*/ + GLboolean Map1Color4; + GLboolean Map1Index; + GLboolean Map1Normal; + GLboolean Map1TextureCoord1; + GLboolean Map1TextureCoord2; + GLboolean Map1TextureCoord3; + GLboolean Map1TextureCoord4; + GLboolean Map1Vertex3; + GLboolean Map1Vertex4; + GLboolean Map1Attrib[16]; /* GL_NV_vertex_program */ + GLboolean Map2Color4; + GLboolean Map2Index; + GLboolean Map2Normal; + GLboolean Map2TextureCoord1; + GLboolean Map2TextureCoord2; + GLboolean Map2TextureCoord3; + GLboolean Map2TextureCoord4; + GLboolean Map2Vertex3; + GLboolean Map2Vertex4; + GLboolean Map2Attrib[16]; /* GL_NV_vertex_program */ + GLboolean AutoNormal; + /*@}*/ + + /** + * \name Map Grid endpoints and divisions and calculated du values + */ + /*@{*/ + GLint MapGrid1un; + GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du; + GLint MapGrid2un, MapGrid2vn; + GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du; + GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv; + /*@}*/ +}; + + +/** + * Fog attribute group (GL_FOG_BIT). + */ +struct gl_fog_attrib +{ + GLboolean Enabled; /**< Fog enabled flag */ + GLfloat Color[4]; /**< Fog color */ + GLfloat Density; /**< Density >= 0.0 */ + GLfloat Start; /**< Start distance in eye coords */ + GLfloat End; /**< End distance in eye coords */ + GLfloat Index; /**< Fog index */ + GLenum Mode; /**< Fog mode */ + GLboolean ColorSumEnabled; + GLenum FogCoordinateSource; /**< GL_EXT_fog_coord */ + GLfloat _Scale; /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */ +}; + + +/** + * Hint attribute group (GL_HINT_BIT). + * + * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE. + */ +struct gl_hint_attrib +{ + GLenum PerspectiveCorrection; + GLenum PointSmooth; + GLenum LineSmooth; + GLenum PolygonSmooth; + GLenum Fog; + GLenum ClipVolumeClipping; /**< GL_EXT_clip_volume_hint */ + GLenum TextureCompression; /**< GL_ARB_texture_compression */ + GLenum GenerateMipmap; /**< GL_SGIS_generate_mipmap */ + GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */ +}; + +/** + * Light state flags. + */ +/*@{*/ +#define LIGHT_SPOT 0x1 +#define LIGHT_LOCAL_VIEWER 0x2 +#define LIGHT_POSITIONAL 0x4 +#define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER) +/*@}*/ + + +/** + * Lighting attribute group (GL_LIGHT_BIT). + */ +struct gl_light_attrib +{ + struct gl_light Light[MAX_LIGHTS]; /**< Array of light sources */ + struct gl_lightmodel Model; /**< Lighting model */ + + /** + * Must flush FLUSH_VERTICES before referencing: + */ + /*@{*/ + struct gl_material Material; /**< Includes front & back values */ + /*@}*/ + + GLboolean Enabled; /**< Lighting enabled flag */ + GLenum ShadeModel; /**< GL_FLAT or GL_SMOOTH */ + GLenum ProvokingVertex; /**< GL_EXT_provoking_vertex */ + GLenum ColorMaterialFace; /**< GL_FRONT, BACK or FRONT_AND_BACK */ + GLenum ColorMaterialMode; /**< GL_AMBIENT, GL_DIFFUSE, etc */ + GLbitfield ColorMaterialBitmask; /**< bitmask formed from Face and Mode */ + GLboolean ColorMaterialEnabled; + GLenum ClampVertexColor; + + struct gl_light EnabledList; /**< List sentinel */ + + /** + * Derived state for optimizations: + */ + /*@{*/ + GLboolean _NeedEyeCoords; + GLboolean _NeedVertices; /**< Use fast shader? */ + GLbitfield _Flags; /**< LIGHT_* flags, see above */ + GLfloat _BaseColor[2][3]; + /*@}*/ +}; + + +/** + * Line attribute group (GL_LINE_BIT). + */ +struct gl_line_attrib +{ + GLboolean SmoothFlag; /**< GL_LINE_SMOOTH enabled? */ + GLboolean StippleFlag; /**< GL_LINE_STIPPLE enabled? */ + GLushort StipplePattern; /**< Stipple pattern */ + GLint StippleFactor; /**< Stipple repeat factor */ + GLfloat Width; /**< Line width */ +}; + + +/** + * Display list attribute group (GL_LIST_BIT). + */ +struct gl_list_attrib +{ + GLuint ListBase; +}; + + +/** + * Multisample attribute group (GL_MULTISAMPLE_BIT). + */ +struct gl_multisample_attrib +{ + GLboolean Enabled; + GLboolean _Enabled; /**< true if Enabled and multisample buffer */ + GLboolean SampleAlphaToCoverage; + GLboolean SampleAlphaToOne; + GLboolean SampleCoverage; + GLfloat SampleCoverageValue; + GLboolean SampleCoverageInvert; +}; + + +/** + * A pixelmap (see glPixelMap) + */ +struct gl_pixelmap +{ + GLint Size; + GLfloat Map[MAX_PIXEL_MAP_TABLE]; + GLubyte Map8[MAX_PIXEL_MAP_TABLE]; /**< converted to 8-bit color */ +}; + + +/** + * Collection of all pixelmaps + */ +struct gl_pixelmaps +{ + struct gl_pixelmap RtoR; /**< i.e. GL_PIXEL_MAP_R_TO_R */ + struct gl_pixelmap GtoG; + struct gl_pixelmap BtoB; + struct gl_pixelmap AtoA; + struct gl_pixelmap ItoR; + struct gl_pixelmap ItoG; + struct gl_pixelmap ItoB; + struct gl_pixelmap ItoA; + struct gl_pixelmap ItoI; + struct gl_pixelmap StoS; +}; + + +/** + * Pixel attribute group (GL_PIXEL_MODE_BIT). + */ +struct gl_pixel_attrib +{ + GLenum ReadBuffer; /**< source buffer for glRead/CopyPixels() */ + + /*--- Begin Pixel Transfer State ---*/ + /* Fields are in the order in which they're applied... */ + + /** Scale & Bias (index shift, offset) */ + /*@{*/ + GLfloat RedBias, RedScale; + GLfloat GreenBias, GreenScale; + GLfloat BlueBias, BlueScale; + GLfloat AlphaBias, AlphaScale; + GLfloat DepthBias, DepthScale; + GLint IndexShift, IndexOffset; + /*@}*/ + + /* Pixel Maps */ + /* Note: actual pixel maps are not part of this attrib group */ + GLboolean MapColorFlag; + GLboolean MapStencilFlag; + + /*--- End Pixel Transfer State ---*/ + + /** glPixelZoom */ + GLfloat ZoomX, ZoomY; + + /** GL_SGI_texture_color_table */ + GLfloat TextureColorTableScale[4]; /**< RGBA */ + GLfloat TextureColorTableBias[4]; /**< RGBA */ +}; + + +/** + * Point attribute group (GL_POINT_BIT). + */ +struct gl_point_attrib +{ + GLboolean SmoothFlag; /**< True if GL_POINT_SMOOTH is enabled */ + GLfloat Size; /**< User-specified point size */ + GLfloat Params[3]; /**< GL_EXT_point_parameters */ + GLfloat MinSize, MaxSize; /**< GL_EXT_point_parameters */ + GLfloat Threshold; /**< GL_EXT_point_parameters */ + GLboolean _Attenuated; /**< True if Params != [1, 0, 0] */ + GLboolean PointSprite; /**< GL_NV/ARB_point_sprite */ + GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/ + GLenum SpriteRMode; /**< GL_NV_point_sprite (only!) */ + GLenum SpriteOrigin; /**< GL_ARB_point_sprite */ +}; + + +/** + * Polygon attribute group (GL_POLYGON_BIT). + */ +struct gl_polygon_attrib +{ + GLenum FrontFace; /**< Either GL_CW or GL_CCW */ + GLenum FrontMode; /**< Either GL_POINT, GL_LINE or GL_FILL */ + GLenum BackMode; /**< Either GL_POINT, GL_LINE or GL_FILL */ + GLboolean _FrontBit; /**< 0=GL_CCW, 1=GL_CW */ + GLboolean CullFlag; /**< Culling on/off flag */ + GLboolean SmoothFlag; /**< True if GL_POLYGON_SMOOTH is enabled */ + GLboolean StippleFlag; /**< True if GL_POLYGON_STIPPLE is enabled */ + GLenum CullFaceMode; /**< Culling mode GL_FRONT or GL_BACK */ + GLfloat OffsetFactor; /**< Polygon offset factor, from user */ + GLfloat OffsetUnits; /**< Polygon offset units, from user */ + GLboolean OffsetPoint; /**< Offset in GL_POINT mode */ + GLboolean OffsetLine; /**< Offset in GL_LINE mode */ + GLboolean OffsetFill; /**< Offset in GL_FILL mode */ +}; + + +/** + * Scissor attributes (GL_SCISSOR_BIT). + */ +struct gl_scissor_attrib +{ + GLboolean Enabled; /**< Scissor test enabled? */ + GLint X, Y; /**< Lower left corner of box */ + GLsizei Width, Height; /**< Size of box */ +}; + + +/** + * Stencil attribute group (GL_STENCIL_BUFFER_BIT). + * + * Three sets of stencil data are tracked so that OpenGL 2.0, + * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported + * simultaneously. In each of the stencil state arrays, element 0 corresponds + * to GL_FRONT. Element 1 corresponds to the OpenGL 2.0 / + * GL_ATI_separate_stencil GL_BACK state. Element 2 corresponds to the + * GL_EXT_stencil_two_side GL_BACK state. + * + * The derived value \c _BackFace is either 1 or 2 depending on whether or + * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled. + * + * The derived value \c _TestTwoSide is set when the front-face and back-face + * stencil state are different. + */ +struct gl_stencil_attrib +{ + GLboolean Enabled; /**< Enabled flag */ + GLboolean TestTwoSide; /**< GL_EXT_stencil_two_side */ + GLubyte ActiveFace; /**< GL_EXT_stencil_two_side (0 or 2) */ + GLboolean _Enabled; /**< Enabled and stencil buffer present */ + GLboolean _TestTwoSide; + GLubyte _BackFace; /**< Current back stencil state (1 or 2) */ + GLenum Function[3]; /**< Stencil function */ + GLenum FailFunc[3]; /**< Fail function */ + GLenum ZPassFunc[3]; /**< Depth buffer pass function */ + GLenum ZFailFunc[3]; /**< Depth buffer fail function */ + GLint Ref[3]; /**< Reference value */ + GLuint ValueMask[3]; /**< Value mask */ + GLuint WriteMask[3]; /**< Write mask */ + GLuint Clear; /**< Clear value */ +}; + + +/** + * An index for each type of texture object. These correspond to the GL + * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc. + * Note: the order is from highest priority to lowest priority. + */ +typedef enum +{ + TEXTURE_2D_ARRAY_INDEX, + TEXTURE_1D_ARRAY_INDEX, + TEXTURE_CUBE_INDEX, + TEXTURE_3D_INDEX, + TEXTURE_RECT_INDEX, + TEXTURE_2D_INDEX, + TEXTURE_1D_INDEX, + NUM_TEXTURE_TARGETS +} gl_texture_index; + + +/** + * Bit flags for each type of texture object + * Used for Texture.Unit[]._ReallyEnabled flags. + */ +/*@{*/ +#define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX) +#define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX) +#define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX) +#define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX) +#define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX) +#define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX) +#define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX) +/*@}*/ + + +/** + * TexGenEnabled flags. + */ +/*@{*/ +#define S_BIT 1 +#define T_BIT 2 +#define R_BIT 4 +#define Q_BIT 8 +#define STR_BITS (S_BIT | T_BIT | R_BIT) +/*@}*/ + + +/** + * Bit flag versions of the corresponding GL_ constants. + */ +/*@{*/ +#define TEXGEN_SPHERE_MAP 0x1 +#define TEXGEN_OBJ_LINEAR 0x2 +#define TEXGEN_EYE_LINEAR 0x4 +#define TEXGEN_REFLECTION_MAP_NV 0x8 +#define TEXGEN_NORMAL_MAP_NV 0x10 + +#define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \ + TEXGEN_REFLECTION_MAP_NV | \ + TEXGEN_NORMAL_MAP_NV) +#define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \ + TEXGEN_REFLECTION_MAP_NV | \ + TEXGEN_NORMAL_MAP_NV | \ + TEXGEN_EYE_LINEAR) +/*@}*/ + + + +/** Tex-gen enabled for texture unit? */ +#define ENABLE_TEXGEN(unit) (1 << (unit)) + +/** Non-identity texture matrix for texture unit? */ +#define ENABLE_TEXMAT(unit) (1 << (unit)) + + +/** + * Texel fetch function prototype. We use texel fetch functions to + * extract RGBA, color indexes and depth components out of 1D, 2D and 3D + * texture images. These functions help to isolate us from the gritty + * details of all the various texture image encodings. + * + * \param texImage texture image. + * \param col texel column. + * \param row texel row. + * \param img texel image level/layer. + * \param texelOut output texel (up to 4 GLchans) + */ +typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage, + GLint col, GLint row, GLint img, + GLchan *texelOut ); + +/** + * As above, but returns floats. + * Used for depth component images and for upcoming signed/float + * texture images. + */ +typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage, + GLint col, GLint row, GLint img, + GLfloat *texelOut ); + + +typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage, + GLint col, GLint row, GLint img, + const void *texel); + + +/** + * Texture image state. Describes the dimensions of a texture image, + * the texel format and pointers to Texel Fetch functions. + */ +struct gl_texture_image +{ + GLint InternalFormat; /**< Internal format as given by the user */ + GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_ALPHA, + * GL_LUMINANCE, GL_LUMINANCE_ALPHA, + * GL_INTENSITY, GL_COLOR_INDEX, + * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT + * only. Used for choosing TexEnv arithmetic. + */ + GLuint TexFormat; /**< The actual format: MESA_FORMAT_x */ + + GLuint Border; /**< 0 or 1 */ + GLuint Width; /**< = 2^WidthLog2 + 2*Border */ + GLuint Height; /**< = 2^HeightLog2 + 2*Border */ + GLuint Depth; /**< = 2^DepthLog2 + 2*Border */ + GLuint Width2; /**< = Width - 2*Border */ + GLuint Height2; /**< = Height - 2*Border */ + GLuint Depth2; /**< = Depth - 2*Border */ + GLuint WidthLog2; /**< = log2(Width2) */ + GLuint HeightLog2; /**< = log2(Height2) */ + GLuint DepthLog2; /**< = log2(Depth2) */ + GLuint MaxLog2; /**< = MAX(WidthLog2, HeightLog2) */ + GLfloat WidthScale; /**< used for mipmap LOD computation */ + GLfloat HeightScale; /**< used for mipmap LOD computation */ + GLfloat DepthScale; /**< used for mipmap LOD computation */ + GLboolean IsClientData; /**< Data owned by client? */ + GLboolean _IsPowerOfTwo; /**< Are all dimensions powers of two? */ + + struct gl_texture_object *TexObject; /**< Pointer back to parent object */ + + FetchTexelFuncC FetchTexelc; /**< GLchan texel fetch function pointer */ + FetchTexelFuncF FetchTexelf; /**< Float texel fetch function pointer */ + + GLuint RowStride; /**< Padded width in units of texels */ + GLuint *ImageOffsets; /**< if 3D texture: array [Depth] of offsets to + each 2D slice in 'Data', in texels */ + GLvoid *Data; /**< Image data, accessed via FetchTexel() */ + + /** + * \name For device driver: + */ + /*@{*/ + void *DriverData; /**< Arbitrary device driver data */ + /*@}*/ +}; + + +/** + * Indexes for cube map faces. + */ +typedef enum +{ + FACE_POS_X = 0, + FACE_NEG_X = 1, + FACE_POS_Y = 2, + FACE_NEG_Y = 3, + FACE_POS_Z = 4, + FACE_NEG_Z = 5, + MAX_FACES = 6 +} gl_face_index; + + +/** + * Texture object state. Contains the array of mipmap images, border color, + * wrap modes, filter modes, shadow/texcompare state, and the per-texture + * color palette. + */ +struct gl_texture_object +{ + _glthread_Mutex Mutex; /**< for thread safety */ + GLint RefCount; /**< reference count */ + GLuint Name; /**< the user-visible texture object ID */ + GLenum Target; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */ + GLfloat Priority; /**< in [0,1] */ + union { + GLfloat f[4]; + GLuint ui[4]; + GLint i[4]; + } BorderColor; /**< Interpreted according to texture format */ + GLenum WrapS; /**< S-axis texture image wrap mode */ + GLenum WrapT; /**< T-axis texture image wrap mode */ + GLenum WrapR; /**< R-axis texture image wrap mode */ + GLenum MinFilter; /**< minification filter */ + GLenum MagFilter; /**< magnification filter */ + GLfloat MinLod; /**< min lambda, OpenGL 1.2 */ + GLfloat MaxLod; /**< max lambda, OpenGL 1.2 */ + GLfloat LodBias; /**< OpenGL 1.4 */ + GLint BaseLevel; /**< min mipmap level, OpenGL 1.2 */ + GLint MaxLevel; /**< max mipmap level, OpenGL 1.2 */ + GLfloat MaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */ + GLenum CompareMode; /**< GL_ARB_shadow */ + GLenum CompareFunc; /**< GL_ARB_shadow */ + GLfloat CompareFailValue; /**< GL_ARB_shadow_ambient */ + GLenum DepthMode; /**< GL_ARB_depth_texture */ + GLint _MaxLevel; /**< actual max mipmap level (q in the spec) */ + GLfloat _MaxLambda; /**< = _MaxLevel - BaseLevel (q - b in spec) */ + GLint CropRect[4]; /**< GL_OES_draw_texture */ + GLenum Swizzle[4]; /**< GL_EXT_texture_swizzle */ + GLuint _Swizzle; /**< same as Swizzle, but SWIZZLE_* format */ + GLboolean GenerateMipmap; /**< GL_SGIS_generate_mipmap */ + GLboolean _Complete; /**< Is texture object complete? */ + GLboolean _RenderToTexture; /**< Any rendering to this texture? */ + GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */ + + /** Actual texture images, indexed by [cube face] and [mipmap level] */ + struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS]; + + /** GL_EXT_paletted_texture */ + struct gl_color_table Palette; + + /** + * \name For device driver. + * Note: instead of attaching driver data to this pointer, it's preferable + * to instead use this struct as a base class for your own texture object + * class. Driver->NewTextureObject() can be used to implement the + * allocation. + */ + void *DriverData; /**< Arbitrary device driver data */ +}; + + +/** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */ +#define MAX_COMBINER_TERMS 4 + + +/** + * Texture combine environment state. + */ +struct gl_tex_env_combine_state +{ + GLenum ModeRGB; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */ + GLenum ModeA; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */ + /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */ + GLenum SourceRGB[MAX_COMBINER_TERMS]; + GLenum SourceA[MAX_COMBINER_TERMS]; + /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */ + GLenum OperandRGB[MAX_COMBINER_TERMS]; + GLenum OperandA[MAX_COMBINER_TERMS]; + GLuint ScaleShiftRGB; /**< 0, 1 or 2 */ + GLuint ScaleShiftA; /**< 0, 1 or 2 */ + GLuint _NumArgsRGB; /**< Number of inputs used for the RGB combiner */ + GLuint _NumArgsA; /**< Number of inputs used for the A combiner */ +}; + + +/** + * Texture coord generation state. + */ +struct gl_texgen +{ + GLenum Mode; /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */ + GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */ + GLfloat ObjectPlane[4]; + GLfloat EyePlane[4]; +}; + + +/** + * Texture unit state. Contains enable flags, texture environment/function/ + * combiners, texgen state, pointers to current texture objects and + * post-filter color tables. + */ +struct gl_texture_unit +{ + GLbitfield Enabled; /**< bitmask of TEXTURE_*_BIT flags */ + GLbitfield _ReallyEnabled; /**< 0 or exactly one of TEXTURE_*_BIT flags */ + + GLenum EnvMode; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */ + GLfloat EnvColor[4]; + + struct gl_texgen GenS; + struct gl_texgen GenT; + struct gl_texgen GenR; + struct gl_texgen GenQ; + GLbitfield TexGenEnabled; /**< Bitwise-OR of [STRQ]_BIT values */ + GLbitfield _GenFlags; /**< Bitwise-OR of Gen[STRQ]._ModeBit */ + + GLfloat LodBias; /**< for biasing mipmap levels */ + GLenum BumpTarget; + GLfloat RotMatrix[4]; /* 2x2 matrix */ + + /** + * \name GL_EXT_texture_env_combine + */ + struct gl_tex_env_combine_state Combine; + + /** + * Derived state based on \c EnvMode and the \c BaseFormat of the + * currently enabled texture. + */ + struct gl_tex_env_combine_state _EnvMode; + + /** + * Currently enabled combiner state. This will point to either + * \c Combine or \c _EnvMode. + */ + struct gl_tex_env_combine_state *_CurrentCombine; + + /** Current texture object pointers */ + struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS]; + + /** Points to highest priority, complete and enabled texture object */ + struct gl_texture_object *_Current; + + /** GL_SGI_texture_color_table */ + /*@{*/ + struct gl_color_table ColorTable; + struct gl_color_table ProxyColorTable; + GLboolean ColorTableEnabled; + /*@}*/ +}; + + +/** + * Texture attribute group (GL_TEXTURE_BIT). + */ +struct gl_texture_attrib +{ + GLuint CurrentUnit; /**< GL_ACTIVE_TEXTURE */ + struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS]; + + struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS]; + + /** GL_ARB_seamless_cubemap */ + GLboolean CubeMapSeamless; + + /** GL_EXT_shared_texture_palette */ + GLboolean SharedPalette; + struct gl_color_table Palette; + + /** Texture units/samplers used by vertex or fragment texturing */ + GLbitfield _EnabledUnits; + + /** Texture coord units/sets used for fragment texturing */ + GLbitfield _EnabledCoordUnits; + + /** Texture coord units that have texgen enabled */ + GLbitfield _TexGenEnabled; + + /** Texture coord units that have non-identity matrices */ + GLbitfield _TexMatEnabled; + + /** Bitwise-OR of all Texture.Unit[i]._GenFlags */ + GLbitfield _GenFlags; +}; + + +/** + * Transformation attribute group (GL_TRANSFORM_BIT). + */ +struct gl_transform_attrib +{ + GLenum MatrixMode; /**< Matrix mode */ + GLfloat EyeUserPlane[MAX_CLIP_PLANES][4]; /**< User clip planes */ + GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4]; /**< derived */ + GLbitfield ClipPlanesEnabled; /**< on/off bitmask */ + GLboolean Normalize; /**< Normalize all normals? */ + GLboolean RescaleNormals; /**< GL_EXT_rescale_normal */ + GLboolean RasterPositionUnclipped; /**< GL_IBM_rasterpos_clip */ + GLboolean DepthClamp; /**< GL_ARB_depth_clamp */ + + GLfloat CullEyePos[4]; + GLfloat CullObjPos[4]; +}; + + +/** + * Viewport attribute group (GL_VIEWPORT_BIT). + */ +struct gl_viewport_attrib +{ + GLint X, Y; /**< position */ + GLsizei Width, Height; /**< size */ + GLfloat Near, Far; /**< Depth buffer range */ + GLmatrix _WindowMap; /**< Mapping transformation as a matrix. */ +}; + + +/** + * GL_ARB_vertex/pixel_buffer_object buffer object + */ +struct gl_buffer_object +{ + _glthread_Mutex Mutex; + GLint RefCount; + GLuint Name; + GLenum Usage; /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */ + GLsizeiptrARB Size; /**< Size of buffer storage in bytes */ + GLubyte *Data; /**< Location of storage either in RAM or VRAM. */ + /** Fields describing a mapped buffer */ + /*@{*/ + GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */ + GLvoid *Pointer; /**< User-space address of mapping */ + GLintptr Offset; /**< Mapped offset */ + GLsizeiptr Length; /**< Mapped length */ + /*@}*/ + GLboolean Written; /**< Ever written to? (for debugging) */ + GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */ +}; + + +/** + * Client pixel packing/unpacking attributes + */ +struct gl_pixelstore_attrib +{ + GLint Alignment; + GLint RowLength; + GLint SkipPixels; + GLint SkipRows; + GLint ImageHeight; + GLint SkipImages; + GLboolean SwapBytes; + GLboolean LsbFirst; + GLboolean ClientStorage; /**< GL_APPLE_client_storage */ + GLboolean Invert; /**< GL_MESA_pack_invert */ + struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */ +}; + + +/** + * Client vertex array attributes + */ +struct gl_client_array +{ + GLint Size; /**< components per element (1,2,3,4) */ + GLenum Type; /**< datatype: GL_FLOAT, GL_INT, etc */ + GLenum Format; /**< default: GL_RGBA, but may be GL_BGRA */ + GLsizei Stride; /**< user-specified stride */ + GLsizei StrideB; /**< actual stride in bytes */ + const GLubyte *Ptr; /**< Points to array data */ + GLboolean Enabled; /**< Enabled flag is a boolean */ + GLboolean Normalized; /**< GL_ARB_vertex_program */ + GLboolean Integer; /**< Integer-valued? */ + GLuint _ElementSize; /**< size of each element in bytes */ + + struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */ + GLuint _MaxElement; /**< max element index into array buffer + 1 */ +}; + + +/** + * Collection of vertex arrays. Defined by the GL_APPLE_vertex_array_object + * extension, but a nice encapsulation in any case. + */ +struct gl_array_object +{ + /** Name of the array object as received from glGenVertexArrayAPPLE. */ + GLuint Name; + + GLint RefCount; + _glthread_Mutex Mutex; + GLboolean VBOonly; /**< require all arrays to live in VBOs? */ + + /** Conventional vertex arrays */ + /*@{*/ + struct gl_client_array Vertex; + struct gl_client_array Weight; + struct gl_client_array Normal; + struct gl_client_array Color; + struct gl_client_array SecondaryColor; + struct gl_client_array FogCoord; + struct gl_client_array Index; + struct gl_client_array EdgeFlag; + struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS]; + struct gl_client_array PointSize; + /*@}*/ + + /** + * Generic arrays for vertex programs/shaders. + * For NV vertex programs, these attributes alias and take priority + * over the conventional attribs above. For ARB vertex programs and + * GLSL vertex shaders, these attributes are separate. + */ + struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS]; + + /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */ + GLbitfield _Enabled; + + /** + * Min of all enabled arrays' _MaxElement. When arrays reside inside VBOs + * we can determine the max legal (in bounds) glDrawElements array index. + */ + GLuint _MaxElement; +}; + + +/** + * Vertex array state + */ +struct gl_array_attrib +{ + /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */ + struct gl_array_object *ArrayObj; + + /** The default vertex array object */ + struct gl_array_object *DefaultArrayObj; + + /** Array objects (GL_ARB/APPLE_vertex_array_object) */ + struct _mesa_HashTable *Objects; + + GLint ActiveTexture; /**< Client Active Texture */ + GLuint LockFirst; /**< GL_EXT_compiled_vertex_array */ + GLuint LockCount; /**< GL_EXT_compiled_vertex_array */ + + /** GL 3.1 (slightly different from GL_NV_primitive_restart) */ + GLboolean PrimitiveRestart; + GLuint RestartIndex; + + GLbitfield NewState; /**< mask of _NEW_ARRAY_* values */ + + /* GL_ARB_vertex_buffer_object */ + struct gl_buffer_object *ArrayBufferObj; + struct gl_buffer_object *ElementArrayBufferObj; +}; + + +/** + * Feedback buffer state + */ +struct gl_feedback +{ + GLenum Type; + GLbitfield _Mask; /**< FB_* bits */ + GLfloat *Buffer; + GLuint BufferSize; + GLuint Count; +}; + + +/** + * Selection buffer state + */ +struct gl_selection +{ + GLuint *Buffer; /**< selection buffer */ + GLuint BufferSize; /**< size of the selection buffer */ + GLuint BufferCount; /**< number of values in the selection buffer */ + GLuint Hits; /**< number of records in the selection buffer */ + GLuint NameStackDepth; /**< name stack depth */ + GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */ + GLboolean HitFlag; /**< hit flag */ + GLfloat HitMinZ; /**< minimum hit depth */ + GLfloat HitMaxZ; /**< maximum hit depth */ +}; + + +/** + * 1-D Evaluator control points + */ +struct gl_1d_map +{ + GLuint Order; /**< Number of control points */ + GLfloat u1, u2, du; /**< u1, u2, 1.0/(u2-u1) */ + GLfloat *Points; /**< Points to contiguous control points */ +}; + + +/** + * 2-D Evaluator control points + */ +struct gl_2d_map +{ + GLuint Uorder; /**< Number of control points in U dimension */ + GLuint Vorder; /**< Number of control points in V dimension */ + GLfloat u1, u2, du; + GLfloat v1, v2, dv; + GLfloat *Points; /**< Points to contiguous control points */ +}; + + +/** + * All evaluator control point state + */ +struct gl_evaluators +{ + /** + * \name 1-D maps + */ + /*@{*/ + struct gl_1d_map Map1Vertex3; + struct gl_1d_map Map1Vertex4; + struct gl_1d_map Map1Index; + struct gl_1d_map Map1Color4; + struct gl_1d_map Map1Normal; + struct gl_1d_map Map1Texture1; + struct gl_1d_map Map1Texture2; + struct gl_1d_map Map1Texture3; + struct gl_1d_map Map1Texture4; + struct gl_1d_map Map1Attrib[16]; /**< GL_NV_vertex_program */ + /*@}*/ + + /** + * \name 2-D maps + */ + /*@{*/ + struct gl_2d_map Map2Vertex3; + struct gl_2d_map Map2Vertex4; + struct gl_2d_map Map2Index; + struct gl_2d_map Map2Color4; + struct gl_2d_map Map2Normal; + struct gl_2d_map Map2Texture1; + struct gl_2d_map Map2Texture2; + struct gl_2d_map Map2Texture3; + struct gl_2d_map Map2Texture4; + struct gl_2d_map Map2Attrib[16]; /**< GL_NV_vertex_program */ + /*@}*/ +}; + + +/** + * Names of the various vertex/fragment program register files, etc. + * + * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c) + * All values should fit in a 4-bit field. + * + * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM, + * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to + * be "uniform" variables since they can only be set outside glBegin/End. + * They're also all stored in the same Parameters array. + */ +typedef enum +{ + PROGRAM_TEMPORARY, /**< machine->Temporary[] */ + PROGRAM_INPUT, /**< machine->Inputs[] */ + PROGRAM_OUTPUT, /**< machine->Outputs[] */ + PROGRAM_VARYING, /**< machine->Inputs[]/Outputs[] */ + PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */ + PROGRAM_ENV_PARAM, /**< gl_program->Parameters[] */ + PROGRAM_STATE_VAR, /**< gl_program->Parameters[] */ + PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */ + PROGRAM_CONSTANT, /**< gl_program->Parameters[] */ + PROGRAM_UNIFORM, /**< gl_program->Parameters[] */ + PROGRAM_WRITE_ONLY, /**< A dummy, write-only register */ + PROGRAM_ADDRESS, /**< machine->AddressReg */ + PROGRAM_SAMPLER, /**< for shader samplers, compile-time only */ + PROGRAM_UNDEFINED, /**< Invalid/TBD value */ + PROGRAM_FILE_MAX +} gl_register_file; + + +/** Vertex and fragment instructions */ +struct prog_instruction; +struct gl_program_parameter_list; +struct gl_uniform_list; + + +/** + * Base class for any kind of program object + */ +struct gl_program +{ + GLuint Id; + GLubyte *String; /**< Null-terminated program text */ + GLint RefCount; + GLenum Target; /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */ + GLenum Format; /**< String encoding format */ + GLboolean Resident; + + struct prog_instruction *Instructions; + + GLbitfield InputsRead; /**< Bitmask of which input regs are read */ + GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */ + GLbitfield InputFlags[MAX_PROGRAM_INPUTS]; /**< PROG_PARAM_BIT_x flags */ + GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */ + GLbitfield TexturesUsed[MAX_TEXTURE_UNITS]; /**< TEXTURE_x_BIT bitmask */ + GLbitfield SamplersUsed; /**< Bitfield of which samplers are used */ + GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */ + + + /** Named parameters, constants, etc. from program text */ + struct gl_program_parameter_list *Parameters; + /** Numbered local parameters */ + GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4]; + + /** Vertex/fragment shader varying vars */ + struct gl_program_parameter_list *Varying; + /** Vertex program user-defined attributes */ + struct gl_program_parameter_list *Attributes; + + /** Map from sampler unit to texture unit (set by glUniform1i()) */ + GLubyte SamplerUnits[MAX_SAMPLERS]; + /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */ + gl_texture_index SamplerTargets[MAX_SAMPLERS]; + + /** Bitmask of which register files are read/written with indirect + * addressing. Mask of (1 << PROGRAM_x) bits. + */ + GLbitfield IndirectRegisterFiles; + + /** Logical counts */ + /*@{*/ + GLuint NumInstructions; + GLuint NumTemporaries; + GLuint NumParameters; + GLuint NumAttributes; + GLuint NumAddressRegs; + GLuint NumAluInstructions; + GLuint NumTexInstructions; + GLuint NumTexIndirections; + /*@}*/ + /** Native, actual h/w counts */ + /*@{*/ + GLuint NumNativeInstructions; + GLuint NumNativeTemporaries; + GLuint NumNativeParameters; + GLuint NumNativeAttributes; + GLuint NumNativeAddressRegs; + GLuint NumNativeAluInstructions; + GLuint NumNativeTexInstructions; + GLuint NumNativeTexIndirections; + /*@}*/ +}; + + +/** Vertex program object */ +struct gl_vertex_program +{ + struct gl_program Base; /**< base class */ + GLboolean IsNVProgram; /**< is this a GL_NV_vertex_program program? */ + GLboolean IsPositionInvariant; +}; + + +/** Geometry program object */ +struct gl_geometry_program +{ + struct gl_program Base; /**< base class */ + + GLint VerticesOut; + GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB, + GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */ + GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */ +}; + + +/** Fragment program object */ +struct gl_fragment_program +{ + struct gl_program Base; /**< base class */ + GLenum FogOption; + GLboolean UsesKill; /**< shader uses KIL instruction */ + GLboolean OriginUpperLeft; + GLboolean PixelCenterInteger; +}; + + +/** + * State common to vertex and fragment programs. + */ +struct gl_program_state +{ + GLint ErrorPos; /* GL_PROGRAM_ERROR_POSITION_ARB/NV */ + const char *ErrorString; /* GL_PROGRAM_ERROR_STRING_ARB/NV */ +}; + + +/** + * Context state for vertex programs. + */ +struct gl_vertex_program_state +{ + GLboolean Enabled; /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */ + GLboolean _Enabled; /**< Enabled and _valid_ user program? */ + GLboolean PointSizeEnabled; /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */ + GLboolean TwoSideEnabled; /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */ + struct gl_vertex_program *Current; /**< User-bound vertex program */ + + /** Currently enabled and valid vertex program (including internal + * programs, user-defined vertex programs and GLSL vertex shaders). + * This is the program we must use when rendering. + */ + struct gl_vertex_program *_Current; + + GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */ + + /* For GL_NV_vertex_program only: */ + GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4]; + GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4]; + + /** Should fixed-function T&L be implemented with a vertex prog? */ + GLboolean _MaintainTnlProgram; + + /** Program to emulate fixed-function T&L (see above) */ + struct gl_vertex_program *_TnlProgram; + + /** Cache of fixed-function programs */ + struct gl_program_cache *Cache; + + GLboolean _Overriden; +}; + + +/** + * Context state for geometry programs. + */ +struct gl_geometry_program_state +{ + GLboolean Enabled; /**< GL_ARB_GEOMETRY_SHADER4 */ + GLboolean _Enabled; /**< Enabled and valid program? */ + struct gl_geometry_program *Current; /**< user-bound geometry program */ + + /** Currently enabled and valid program (including internal programs + * and compiled shader programs). + */ + struct gl_geometry_program *_Current; + + GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */ + + /** Cache of fixed-function programs */ + struct gl_program_cache *Cache; +}; + +/** + * Context state for fragment programs. + */ +struct gl_fragment_program_state +{ + GLboolean Enabled; /**< User-set fragment program enable flag */ + GLboolean _Enabled; /**< Enabled and _valid_ user program? */ + struct gl_fragment_program *Current; /**< User-bound fragment program */ + + /** Currently enabled and valid fragment program (including internal + * programs, user-defined fragment programs and GLSL fragment shaders). + * This is the program we must use when rendering. + */ + struct gl_fragment_program *_Current; + + GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */ + + /** Should fixed-function texturing be implemented with a fragment prog? */ + GLboolean _MaintainTexEnvProgram; + + /** Program to emulate fixed-function texture env/combine (see above) */ + struct gl_fragment_program *_TexEnvProgram; + + /** Cache of fixed-function programs */ + struct gl_program_cache *Cache; +}; + + +/** + * ATI_fragment_shader runtime state + */ +#define ATI_FS_INPUT_PRIMARY 0 +#define ATI_FS_INPUT_SECONDARY 1 + +struct atifs_instruction; +struct atifs_setupinst; + +/** + * ATI fragment shader + */ +struct ati_fragment_shader +{ + GLuint Id; + GLint RefCount; + struct atifs_instruction *Instructions[2]; + struct atifs_setupinst *SetupInst[2]; + GLfloat Constants[8][4]; + GLbitfield LocalConstDef; /**< Indicates which constants have been set */ + GLubyte numArithInstr[2]; + GLubyte regsAssigned[2]; + GLubyte NumPasses; /**< 1 or 2 */ + GLubyte cur_pass; + GLubyte last_optype; + GLboolean interpinp1; + GLboolean isValid; + GLuint swizzlerq; +}; + +/** + * Context state for GL_ATI_fragment_shader + */ +struct gl_ati_fragment_shader_state +{ + GLboolean Enabled; + GLboolean _Enabled; /**< enabled and valid shader? */ + GLboolean Compiling; + GLfloat GlobalConstants[8][4]; + struct ati_fragment_shader *Current; +}; + + +/** + * Occlusion/timer query object. + */ +struct gl_query_object +{ + GLenum Target; /**< The query target, when active */ + GLuint Id; /**< hash table ID/name */ + GLuint64EXT Result; /**< the counter */ + GLboolean Active; /**< inside Begin/EndQuery */ + GLboolean Ready; /**< result is ready? */ +}; + + +/** + * Context state for query objects. + */ +struct gl_query_state +{ + struct _mesa_HashTable *QueryObjects; + struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */ + struct gl_query_object *CurrentTimerObject; /* GL_EXT_timer_query */ + + /** GL_NV_conditional_render */ + struct gl_query_object *CondRenderQuery; + + /** GL_EXT_transform_feedback */ + struct gl_query_object *PrimitivesGenerated; + struct gl_query_object *PrimitivesWritten; + + /** GL_ARB_timer_query */ + struct gl_query_object *TimeElapsed; + + GLenum CondRenderMode; +}; + + +/** Sync object state */ +struct gl_sync_object { + struct simple_node link; + GLenum Type; /**< GL_SYNC_FENCE */ + GLuint Name; /**< Fence name */ + GLint RefCount; /**< Reference count */ + GLboolean DeletePending; /**< Object was deleted while there were still + * live references (e.g., sync not yet finished) + */ + GLenum SyncCondition; + GLbitfield Flags; /**< Flags passed to glFenceSync */ + GLuint StatusFlag:1; /**< Has the sync object been signaled? */ +}; + + +/** Set by #pragma directives */ +struct gl_sl_pragmas +{ + GLboolean IgnoreOptimize; /**< ignore #pragma optimize(on/off) ? */ + GLboolean IgnoreDebug; /**< ignore #pragma debug(on/off) ? */ + GLboolean Optimize; /**< defaults on */ + GLboolean Debug; /**< defaults off */ +}; + + +/** + * A GLSL vertex or fragment shader object. + */ +struct gl_shader +{ + GLenum Type; /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */ + GLuint Name; /**< AKA the handle */ + GLint RefCount; /**< Reference count */ + GLboolean DeletePending; + GLboolean CompileStatus; + GLboolean Main; /**< shader defines main() */ + GLboolean UnresolvedRefs; + const GLchar *Source; /**< Source code string */ + GLuint SourceChecksum; /**< for debug/logging purposes */ + struct gl_program *Program; /**< Post-compile assembly code */ + GLchar *InfoLog; + struct gl_sl_pragmas Pragmas; + + unsigned Version; /**< GLSL version used for linking */ + + struct exec_list *ir; + struct glsl_symbol_table *symbols; + + /** Shaders containing built-in functions that are used for linking. */ + struct gl_shader *builtins_to_link[16]; + unsigned num_builtins_to_link; +}; + + +/** + * A GLSL program object. + * Basically a linked collection of vertex and fragment shaders. + */ +struct gl_shader_program +{ + GLenum Type; /**< Always GL_SHADER_PROGRAM (internal token) */ + GLuint Name; /**< aka handle or ID */ + GLint RefCount; /**< Reference count */ + GLboolean DeletePending; + + GLuint NumShaders; /**< number of attached shaders */ + struct gl_shader **Shaders; /**< List of attached the shaders */ + + /** User-defined attribute bindings (glBindAttribLocation) */ + struct gl_program_parameter_list *Attributes; + + /** Transform feedback varyings */ + struct { + GLenum BufferMode; + GLuint NumVarying; + GLchar **VaryingNames; /**< Array [NumVarying] of char * */ + } TransformFeedback; + + /** Geometry shader state - copied into gl_geometry_program at link time */ + struct { + GLint VerticesOut; + GLenum InputType; /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB, + GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */ + GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */ + } Geom; + + /* post-link info: */ + struct gl_vertex_program *VertexProgram; /**< Linked vertex program */ + struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */ + struct gl_geometry_program *GeometryProgram; /**< Linked geometry prog */ + struct gl_uniform_list *Uniforms; + struct gl_program_parameter_list *Varying; + GLboolean LinkStatus; /**< GL_LINK_STATUS */ + GLboolean Validated; + GLboolean _Used; /**< Ever used for drawing? */ + GLchar *InfoLog; + + unsigned Version; /**< GLSL version used for linking */ + + /** + * Per-stage shaders resulting from the first stage of linking. + * + * Set of linked shaders for this program. The array is accessed using the + * \c MESA_SHADER_* defines. Entries for non-existent stages will be + * \c NULL. + */ + struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES]; +}; + + +#define GLSL_DUMP 0x1 /**< Dump shaders to stdout */ +#define GLSL_LOG 0x2 /**< Write shaders to files */ +#define GLSL_OPT 0x4 /**< Force optimizations (override pragmas) */ +#define GLSL_NO_OPT 0x8 /**< Force no optimizations (override pragmas) */ +#define GLSL_UNIFORMS 0x10 /**< Print glUniform calls */ +#define GLSL_NOP_VERT 0x20 /**< Force no-op vertex shaders */ +#define GLSL_NOP_FRAG 0x40 /**< Force no-op fragment shaders */ +#define GLSL_USE_PROG 0x80 /**< Log glUseProgram calls */ + + +/** + * Context state for GLSL vertex/fragment shaders. + */ +struct gl_shader_state +{ + /** + * Programs used for rendering + * + * There is a separate program set for each shader stage. If + * GL_EXT_separate_shader_objects is not supported, each of these must point + * to \c NULL or to the same program. + */ + struct gl_shader_program *CurrentVertexProgram; + struct gl_shader_program *CurrentGeometryProgram; + struct gl_shader_program *CurrentFragmentProgram; + + /** + * Program used by glUniform calls. + * + * Explicitly set by \c glUseProgram and \c glActiveProgramEXT. + */ + struct gl_shader_program *ActiveProgram; + + void *MemPool; + + GLbitfield Flags; /**< Mask of GLSL_x flags */ +}; + +/** + * Compiler options for a single GLSL shaders type + */ +struct gl_shader_compiler_options +{ + /** Driver-selectable options: */ + GLboolean EmitCondCodes; /**< Use condition codes? */ + GLboolean EmitNVTempInitialization; /**< 0-fill NV temp registers */ + /** + * Attempts to flatten all ir_if (OPCODE_IF) for GPUs that can't + * support control flow. + */ + GLboolean EmitNoIfs; + GLboolean EmitNoLoops; + GLboolean EmitNoFunctions; + GLboolean EmitNoCont; /**< Emit CONT opcode? */ + GLboolean EmitNoMainReturn; /**< Emit CONT/RET opcodes? */ + GLboolean EmitNoNoise; /**< Emit NOISE opcodes? */ + GLboolean EmitNoPow; /**< Emit POW opcodes? */ + + /** + * \name Forms of indirect addressing the driver cannot do. + */ + /*@{*/ + GLboolean EmitNoIndirectInput; /**< No indirect addressing of inputs */ + GLboolean EmitNoIndirectOutput; /**< No indirect addressing of outputs */ + GLboolean EmitNoIndirectTemp; /**< No indirect addressing of temps */ + GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */ + /*@}*/ + + GLuint MaxUnrollIterations; + + struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */ +}; + +/** + * Transform feedback object state + */ +struct gl_transform_feedback_object +{ + GLuint Name; /**< AKA the object ID */ + GLint RefCount; + GLboolean Active; /**< Is transform feedback enabled? */ + GLboolean Paused; /**< Is transform feedback paused? */ + + /** The feedback buffers */ + GLuint BufferNames[MAX_FEEDBACK_ATTRIBS]; + struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS]; + + /** Start of feedback data in dest buffer */ + GLintptr Offset[MAX_FEEDBACK_ATTRIBS]; + /** Max data to put into dest buffer (in bytes) */ + GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS]; +}; + + +/** + * Context state for transform feedback. + */ +struct gl_transform_feedback +{ + GLenum Mode; /**< GL_POINTS, GL_LINES or GL_TRIANGLES */ + + GLboolean RasterDiscard; /**< GL_RASTERIZER_DISCARD */ + + /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */ + struct gl_buffer_object *CurrentBuffer; + + /** The table of all transform feedback objects */ + struct _mesa_HashTable *Objects; + + /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */ + struct gl_transform_feedback_object *CurrentObject; + + /** The default xform-fb object (Name==0) */ + struct gl_transform_feedback_object *DefaultObject; +}; + + + +/** + * State which can be shared by multiple contexts: + */ +struct gl_shared_state +{ + _glthread_Mutex Mutex; /**< for thread safety */ + GLint RefCount; /**< Reference count */ + struct _mesa_HashTable *DisplayList; /**< Display lists hash table */ + struct _mesa_HashTable *TexObjects; /**< Texture objects hash table */ + + /** Default texture objects (shared by all texture units) */ + struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS]; + + /** Fallback texture used when a bound texture is incomplete */ + struct gl_texture_object *FallbackTex; + + /** + * \name Thread safety and statechange notification for texture + * objects. + * + * \todo Improve the granularity of locking. + */ + /*@{*/ + _glthread_Mutex TexMutex; /**< texobj thread safety */ + GLuint TextureStateStamp; /**< state notification for shared tex */ + /*@}*/ + + /** Default buffer object for vertex arrays that aren't in VBOs */ + struct gl_buffer_object *NullBufferObj; + + /** + * \name Vertex/geometry/fragment programs + */ + /*@{*/ + struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */ + struct gl_vertex_program *DefaultVertexProgram; + struct gl_fragment_program *DefaultFragmentProgram; + struct gl_geometry_program *DefaultGeometryProgram; + /*@}*/ + + /* GL_ATI_fragment_shader */ + struct _mesa_HashTable *ATIShaders; + struct ati_fragment_shader *DefaultFragmentShader; + + struct _mesa_HashTable *BufferObjects; + + /** Table of both gl_shader and gl_shader_program objects */ + struct _mesa_HashTable *ShaderObjects; + + /* GL_EXT_framebuffer_object */ + struct _mesa_HashTable *RenderBuffers; + struct _mesa_HashTable *FrameBuffers; + + /* GL_ARB_sync */ + struct simple_node SyncObjects; + + void *DriverData; /**< Device driver shared state */ +}; + + + + +/** + * A renderbuffer stores colors or depth values or stencil values. + * A framebuffer object will have a collection of these. + * Data are read/written to the buffer with a handful of Get/Put functions. + * + * Instances of this object are allocated with the Driver's NewRenderbuffer + * hook. Drivers will likely wrap this class inside a driver-specific + * class to simulate inheritance. + */ +struct gl_renderbuffer +{ +#define RB_MAGIC 0xaabbccdd + int Magic; /** XXX TEMPORARY DEBUG INFO */ + _glthread_Mutex Mutex; /**< for thread safety */ + GLuint ClassID; /**< Useful for drivers */ + GLuint Name; + GLint RefCount; + GLuint Width, Height; + GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */ + + GLenum InternalFormat; /**< The user-specified format */ + GLenum _BaseFormat; /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or + GL_STENCIL_INDEX. */ + GLuint Format; /**< The actual format: MESA_FORMAT_x */ + + GLubyte NumSamples; + + GLenum DataType; /**< Type of values passed to the Get/Put functions */ + GLvoid *Data; /**< This may not be used by some kinds of RBs */ + + /* Used to wrap one renderbuffer around another: */ + struct gl_renderbuffer *Wrapped; + + /* Delete this renderbuffer */ + void (*Delete)(struct gl_renderbuffer *rb); + + /* Allocate new storage for this renderbuffer */ + GLboolean (*AllocStorage)(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLenum internalFormat, + GLuint width, GLuint height); + + /* Lock/Unlock are called before/after calling the Get/Put functions. + * Not sure this is the right place for these yet. + void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb); + void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb); + */ + + /* Return a pointer to the element/pixel at (x,y). + * Should return NULL if the buffer memory can't be directly addressed. + */ + void *(*GetPointer)(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLint x, GLint y); + + /* Get/Read a row of values. + * The values will be of format _BaseFormat and type DataType. + */ + void (*GetRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, void *values); + + /* Get/Read values at arbitrary locations. + * The values will be of format _BaseFormat and type DataType. + */ + void (*GetValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], void *values); + + /* Put/Write a row of values. + * The values will be of format _BaseFormat and type DataType. + */ + void (*PutRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask); + + /* Put/Write a row of RGB values. This is a special-case routine that's + * only used for RGBA renderbuffers when the source data is GL_RGB. That's + * a common case for glDrawPixels and some triangle routines. + * The values will be of format GL_RGB and type DataType. + */ + void (*PutRowRGB)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *values, const GLubyte *mask); + + + /* Put/Write a row of identical values. + * The values will be of format _BaseFormat and type DataType. + */ + void (*PutMonoRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + GLint x, GLint y, const void *value, const GLubyte *mask); + + /* Put/Write values at arbitrary locations. + * The values will be of format _BaseFormat and type DataType. + */ + void (*PutValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count, + const GLint x[], const GLint y[], const void *values, + const GLubyte *mask); + /* Put/Write identical values at arbitrary locations. + * The values will be of format _BaseFormat and type DataType. + */ + void (*PutMonoValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, + GLuint count, const GLint x[], const GLint y[], + const void *value, const GLubyte *mask); +}; + + +/** + * A renderbuffer attachment points to either a texture object (and specifies + * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer. + */ +struct gl_renderbuffer_attachment +{ + GLenum Type; /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */ + GLboolean Complete; + + /** + * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the + * application supplied renderbuffer object. + */ + struct gl_renderbuffer *Renderbuffer; + + /** + * If \c Type is \c GL_TEXTURE, this stores a pointer to the application + * supplied texture object. + */ + struct gl_texture_object *Texture; + GLuint TextureLevel; /**< Attached mipmap level. */ + GLuint CubeMapFace; /**< 0 .. 5, for cube map textures. */ + GLuint Zoffset; /**< Slice for 3D textures, or layer for both 1D + * and 2D array textures */ +}; + + +/** + * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc). + * In C++ terms, think of this as a base class from which device drivers + * will make derived classes. + */ +struct gl_framebuffer +{ + _glthread_Mutex Mutex; /**< for thread safety */ + /** + * If zero, this is a window system framebuffer. If non-zero, this + * is a FBO framebuffer; note that for some devices (i.e. those with + * a natural pixel coordinate system for FBOs that differs from the + * OpenGL/Mesa coordinate system), this means that the viewport, + * polygon face orientation, and polygon stipple will have to be inverted. + */ + GLuint Name; + + GLint RefCount; + GLboolean DeletePending; + + /** + * The framebuffer's visual. Immutable if this is a window system buffer. + * Computed from attachments if user-made FBO. + */ + struct gl_config Visual; + + GLboolean Initialized; + + GLuint Width, Height; /**< size of frame buffer in pixels */ + + /** \name Drawing bounds (Intersection of buffer size and scissor box) */ + /*@{*/ + GLint _Xmin, _Xmax; /**< inclusive */ + GLint _Ymin, _Ymax; /**< exclusive */ + /*@}*/ + + /** \name Derived Z buffer stuff */ + /*@{*/ + GLuint _DepthMax; /**< Max depth buffer value */ + GLfloat _DepthMaxF; /**< Float max depth buffer value */ + GLfloat _MRD; /**< minimum resolvable difference in Z values */ + /*@}*/ + + /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */ + GLenum _Status; + + /** Integer color values */ + GLboolean _IntegerColor; + + /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */ + struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT]; + + /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER + * attribute group and GL_PIXEL attribute group, respectively. + */ + GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS]; + GLenum ColorReadBuffer; + + /** Computed from ColorDraw/ReadBuffer above */ + GLuint _NumColorDrawBuffers; + GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */ + GLint _ColorReadBufferIndex; /* -1 = None */ + struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS]; + struct gl_renderbuffer *_ColorReadBuffer; + + /** The Actual depth/stencil buffers to use. May be wrappers around the + * depth/stencil buffers attached above. */ + struct gl_renderbuffer *_DepthBuffer; + struct gl_renderbuffer *_StencilBuffer; + + /** Delete this framebuffer */ + void (*Delete)(struct gl_framebuffer *fb); +}; + + +/** + * Limits for vertex and fragment programs/shaders. + */ +struct gl_program_constants +{ + /* logical limits */ + GLuint MaxInstructions; + GLuint MaxAluInstructions; + GLuint MaxTexInstructions; + GLuint MaxTexIndirections; + GLuint MaxAttribs; + GLuint MaxTemps; + GLuint MaxAddressRegs; + GLuint MaxParameters; + GLuint MaxLocalParams; + GLuint MaxEnvParams; + /* native/hardware limits */ + GLuint MaxNativeInstructions; + GLuint MaxNativeAluInstructions; + GLuint MaxNativeTexInstructions; + GLuint MaxNativeTexIndirections; + GLuint MaxNativeAttribs; + GLuint MaxNativeTemps; + GLuint MaxNativeAddressRegs; + GLuint MaxNativeParameters; + /* For shaders */ + GLuint MaxUniformComponents; + /* GL_ARB_geometry_shader4 */ + GLuint MaxGeometryTextureImageUnits; + GLuint MaxGeometryVaryingComponents; + GLuint MaxVertexVaryingComponents; + GLuint MaxGeometryUniformComponents; + GLuint MaxGeometryOutputVertices; + GLuint MaxGeometryTotalOutputComponents; +}; + + +/** + * Constants which may be overridden by device driver during context creation + * but are never changed after that. + */ +struct gl_constants +{ + GLint MaxTextureMbytes; /**< Max memory per image, in MB */ + GLint MaxTextureLevels; /**< Max mipmap levels. */ + GLint Max3DTextureLevels; /**< Max mipmap levels for 3D textures */ + GLint MaxCubeTextureLevels; /**< Max mipmap levels for cube textures */ + GLint MaxArrayTextureLayers; /**< Max layers in array textures */ + GLint MaxTextureRectSize; /**< Max rectangle texture size, in pixes */ + GLuint MaxTextureCoordUnits; + GLuint MaxTextureImageUnits; + GLuint MaxVertexTextureImageUnits; + GLuint MaxCombinedTextureImageUnits; + GLuint MaxTextureUnits; /**< = MIN(CoordUnits, ImageUnits) */ + GLfloat MaxTextureMaxAnisotropy; /**< GL_EXT_texture_filter_anisotropic */ + GLfloat MaxTextureLodBias; /**< GL_EXT_texture_lod_bias */ + + GLuint MaxArrayLockSize; + + GLint SubPixelBits; + + GLfloat MinPointSize, MaxPointSize; /**< aliased */ + GLfloat MinPointSizeAA, MaxPointSizeAA; /**< antialiased */ + GLfloat PointSizeGranularity; + GLfloat MinLineWidth, MaxLineWidth; /**< aliased */ + GLfloat MinLineWidthAA, MaxLineWidthAA; /**< antialiased */ + GLfloat LineWidthGranularity; + + GLuint MaxColorTableSize; + + GLuint MaxClipPlanes; + GLuint MaxLights; + GLfloat MaxShininess; /**< GL_NV_light_max_exponent */ + GLfloat MaxSpotExponent; /**< GL_NV_light_max_exponent */ + + GLuint MaxViewportWidth, MaxViewportHeight; + + struct gl_program_constants VertexProgram; /**< GL_ARB_vertex_program */ + struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */ + struct gl_program_constants GeometryProgram; /**< GL_ARB_geometry_shader4 */ + GLuint MaxProgramMatrices; + GLuint MaxProgramMatrixStackDepth; + + /** vertex array / buffer object bounds checking */ + GLboolean CheckArrayBounds; + + GLuint MaxDrawBuffers; /**< GL_ARB_draw_buffers */ + + GLuint MaxColorAttachments; /**< GL_EXT_framebuffer_object */ + GLuint MaxRenderbufferSize; /**< GL_EXT_framebuffer_object */ + GLuint MaxSamples; /**< GL_ARB_framebuffer_object */ + + GLuint MaxVarying; /**< Number of float[4] varying parameters */ + + GLuint GLSLVersion; /**< GLSL version supported (ex: 120 = 1.20) */ + + /** Which texture units support GL_ATI_envmap_bumpmap as targets */ + GLbitfield SupportedBumpUnits; + + /** + * Maximum amount of time, measured in nanseconds, that the server can wait. + */ + GLuint64 MaxServerWaitTimeout; + + /** GL_EXT_provoking_vertex */ + GLboolean QuadsFollowProvokingVertexConvention; + + /** OpenGL version 3.0 */ + GLbitfield ContextFlags; /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */ + + /** OpenGL version 3.2 */ + GLbitfield ProfileMask; /**< Mask of CONTEXT_x_PROFILE_BIT */ + + /** GL_EXT_transform_feedback */ + GLuint MaxTransformFeedbackSeparateAttribs; + GLuint MaxTransformFeedbackSeparateComponents; + GLuint MaxTransformFeedbackInterleavedComponents; + + /** GL_EXT_gpu_shader4 */ + GLint MinProgramTexelOffset, MaxProgramTexelOffset; +}; + + +/** + * Enable flag for each OpenGL extension. Different device drivers will + * enable different extensions at runtime. + */ +struct gl_extensions +{ + GLboolean dummy; /* don't remove this! */ + GLboolean dummy_true; /* Set true by _mesa_init_extensions(). */ + GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */ + GLboolean ARB_blend_func_extended; + GLboolean ARB_copy_buffer; + GLboolean ARB_depth_buffer_float; + GLboolean ARB_depth_clamp; + GLboolean ARB_depth_texture; + GLboolean ARB_draw_buffers; + GLboolean ARB_draw_elements_base_vertex; + GLboolean ARB_draw_instanced; + GLboolean ARB_fragment_coord_conventions; + GLboolean ARB_fragment_program; + GLboolean ARB_fragment_program_shadow; + GLboolean ARB_fragment_shader; + GLboolean ARB_framebuffer_object; + GLboolean ARB_explicit_attrib_location; + GLboolean ARB_geometry_shader4; + GLboolean ARB_half_float_pixel; + GLboolean ARB_half_float_vertex; + GLboolean ARB_instanced_arrays; + GLboolean ARB_map_buffer_range; + GLboolean ARB_multisample; + GLboolean ARB_multitexture; + GLboolean ARB_occlusion_query; + GLboolean ARB_occlusion_query2; + GLboolean ARB_point_sprite; + GLboolean ARB_sampler_objects; + GLboolean ARB_seamless_cube_map; + GLboolean ARB_shader_objects; + GLboolean ARB_shader_stencil_export; + GLboolean ARB_shading_language_100; + GLboolean ARB_shadow; + GLboolean ARB_shadow_ambient; + GLboolean ARB_sync; + GLboolean ARB_texture_border_clamp; + GLboolean ARB_texture_buffer_object; + GLboolean ARB_texture_compression; + GLboolean ARB_texture_compression_rgtc; + GLboolean ARB_texture_cube_map; + GLboolean ARB_texture_env_combine; + GLboolean ARB_texture_env_crossbar; + GLboolean ARB_texture_env_dot3; + GLboolean ARB_texture_float; + GLboolean ARB_texture_mirrored_repeat; + GLboolean ARB_texture_multisample; + GLboolean ARB_texture_non_power_of_two; + GLboolean ARB_texture_rg; + GLboolean ARB_texture_rgb10_a2ui; + GLboolean ARB_timer_query; + GLboolean ARB_transform_feedback2; + GLboolean ARB_transpose_matrix; + GLboolean ARB_uniform_buffer_object; + GLboolean ARB_vertex_array_object; + GLboolean ARB_vertex_buffer_object; + GLboolean ARB_vertex_program; + GLboolean ARB_vertex_shader; + GLboolean ARB_vertex_type_2_10_10_10_rev; + GLboolean ARB_window_pos; + GLboolean EXT_abgr; + GLboolean EXT_bgra; + GLboolean EXT_blend_color; + GLboolean EXT_blend_equation_separate; + GLboolean EXT_blend_func_separate; + GLboolean EXT_blend_logic_op; + GLboolean EXT_blend_minmax; + GLboolean EXT_blend_subtract; + GLboolean EXT_clip_volume_hint; + GLboolean EXT_compiled_vertex_array; + GLboolean EXT_copy_texture; + GLboolean EXT_depth_bounds_test; + GLboolean EXT_draw_buffers2; + GLboolean EXT_draw_range_elements; + GLboolean EXT_fog_coord; + GLboolean EXT_framebuffer_blit; + GLboolean EXT_framebuffer_multisample; + GLboolean EXT_framebuffer_object; + GLboolean EXT_framebuffer_sRGB; + GLboolean EXT_gpu_program_parameters; + GLboolean EXT_gpu_shader4; + GLboolean EXT_multi_draw_arrays; + GLboolean EXT_paletted_texture; + GLboolean EXT_packed_depth_stencil; + GLboolean EXT_packed_float; + GLboolean EXT_packed_pixels; + GLboolean EXT_pixel_buffer_object; + GLboolean EXT_point_parameters; + GLboolean EXT_polygon_offset; + GLboolean EXT_provoking_vertex; + GLboolean EXT_rescale_normal; + GLboolean EXT_shadow_funcs; + GLboolean EXT_secondary_color; + GLboolean EXT_separate_shader_objects; + GLboolean EXT_separate_specular_color; + GLboolean EXT_shared_texture_palette; + GLboolean EXT_stencil_wrap; + GLboolean EXT_stencil_two_side; + GLboolean EXT_subtexture; + GLboolean EXT_texture; + GLboolean EXT_texture_object; + GLboolean EXT_texture3D; + GLboolean EXT_texture_array; + GLboolean EXT_texture_compression_s3tc; + GLboolean EXT_texture_env_add; + GLboolean EXT_texture_env_combine; + GLboolean EXT_texture_env_dot3; + GLboolean EXT_texture_filter_anisotropic; + GLboolean EXT_texture_integer; + GLboolean EXT_texture_lod_bias; + GLboolean EXT_texture_mirror_clamp; + GLboolean EXT_texture_shared_exponent; + GLboolean EXT_texture_sRGB; + GLboolean EXT_texture_swizzle; + GLboolean EXT_transform_feedback; + GLboolean EXT_timer_query; + GLboolean EXT_vertex_array; + GLboolean EXT_vertex_array_bgra; + GLboolean EXT_vertex_array_set; + GLboolean OES_standard_derivatives; + /* vendor extensions */ + GLboolean APPLE_client_storage; + GLboolean APPLE_packed_pixels; + GLboolean APPLE_vertex_array_object; + GLboolean APPLE_object_purgeable; + GLboolean ATI_envmap_bumpmap; + GLboolean ATI_texture_mirror_once; + GLboolean ATI_texture_env_combine3; + GLboolean ATI_fragment_shader; + GLboolean ATI_separate_stencil; + GLboolean IBM_rasterpos_clip; + GLboolean IBM_multimode_draw_arrays; + GLboolean MESA_pack_invert; + GLboolean MESA_resize_buffers; + GLboolean MESA_ycbcr_texture; + GLboolean MESA_texture_array; + GLboolean MESA_texture_signed_rgba; + GLboolean NV_blend_square; + GLboolean NV_conditional_render; + GLboolean NV_fragment_program; + GLboolean NV_fragment_program_option; + GLboolean NV_light_max_exponent; + GLboolean NV_point_sprite; + GLboolean NV_primitive_restart; + GLboolean NV_texgen_reflection; + GLboolean NV_texture_env_combine4; + GLboolean NV_texture_rectangle; + GLboolean NV_vertex_program; + GLboolean NV_vertex_program1_1; + GLboolean OES_read_format; + GLboolean SGI_texture_color_table; + GLboolean SGIS_generate_mipmap; + GLboolean SGIS_texture_edge_clamp; + GLboolean SGIS_texture_lod; + GLboolean TDFX_texture_compression_FXT1; + GLboolean S3_s3tc; + GLboolean OES_EGL_image; + GLboolean OES_draw_texture; + GLboolean EXT_texture_format_BGRA8888; + GLboolean extension_sentinel; + /** The extension string */ + const GLubyte *String; + /** Number of supported extensions */ + GLuint Count; +}; + + +/** + * A stack of matrices (projection, modelview, color, texture, etc). + */ +struct gl_matrix_stack +{ + GLmatrix *Top; /**< points into Stack */ + GLmatrix *Stack; /**< array [MaxDepth] of GLmatrix */ + GLuint Depth; /**< 0 <= Depth < MaxDepth */ + GLuint MaxDepth; /**< size of Stack[] array */ + GLuint DirtyFlag; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */ +}; + + +/** + * \name Bits for image transfer operations + * \sa __struct gl_contextRec::ImageTransferState. + */ +/*@{*/ +#define IMAGE_SCALE_BIAS_BIT 0x1 +#define IMAGE_SHIFT_OFFSET_BIT 0x2 +#define IMAGE_MAP_COLOR_BIT 0x4 +#define IMAGE_CLAMP_BIT 0x800 + + +/** Pixel Transfer ops */ +#define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT | \ + IMAGE_SHIFT_OFFSET_BIT | \ + IMAGE_MAP_COLOR_BIT) + +/** + * \name Bits to indicate what state has changed. + * + * 4 unused flags. + */ +/*@{*/ +#define _NEW_MODELVIEW 0x1 /**< __struct gl_contextRec::ModelView */ +#define _NEW_PROJECTION 0x2 /**< __struct gl_contextRec::Projection */ +#define _NEW_TEXTURE_MATRIX 0x4 /**< __struct gl_contextRec::TextureMatrix */ +#define _NEW_ACCUM 0x10 /**< __struct gl_contextRec::Accum */ +#define _NEW_COLOR 0x20 /**< __struct gl_contextRec::Color */ +#define _NEW_DEPTH 0x40 /**< __struct gl_contextRec::Depth */ +#define _NEW_EVAL 0x80 /**< __struct gl_contextRec::Eval, __struct gl_contextRec::EvalMap */ +#define _NEW_FOG 0x100 /**< __struct gl_contextRec::Fog */ +#define _NEW_HINT 0x200 /**< __struct gl_contextRec::Hint */ +#define _NEW_LIGHT 0x400 /**< __struct gl_contextRec::Light */ +#define _NEW_LINE 0x800 /**< __struct gl_contextRec::Line */ +#define _NEW_PIXEL 0x1000 /**< __struct gl_contextRec::Pixel */ +#define _NEW_POINT 0x2000 /**< __struct gl_contextRec::Point */ +#define _NEW_POLYGON 0x4000 /**< __struct gl_contextRec::Polygon */ +#define _NEW_POLYGONSTIPPLE 0x8000 /**< __struct gl_contextRec::PolygonStipple */ +#define _NEW_SCISSOR 0x10000 /**< __struct gl_contextRec::Scissor */ +#define _NEW_STENCIL 0x20000 /**< __struct gl_contextRec::Stencil */ +#define _NEW_TEXTURE 0x40000 /**< __struct gl_contextRec::Texture */ +#define _NEW_TRANSFORM 0x80000 /**< __struct gl_contextRec::Transform */ +#define _NEW_VIEWPORT 0x100000 /**< __struct gl_contextRec::Viewport */ +#define _NEW_PACKUNPACK 0x200000 /**< __struct gl_contextRec::Pack, __struct gl_contextRec::Unpack */ +#define _NEW_ARRAY 0x400000 /**< __struct gl_contextRec::Array */ +#define _NEW_RENDERMODE 0x800000 /**< __struct gl_contextRec::RenderMode, __struct gl_contextRec::Feedback, __struct gl_contextRec::Select */ +#define _NEW_BUFFERS 0x1000000 /**< __struct gl_contextRec::Visual, __struct gl_contextRec::DrawBuffer, */ +#define _NEW_MULTISAMPLE 0x2000000 /**< __struct gl_contextRec::Multisample */ +#define _NEW_TRACK_MATRIX 0x4000000 /**< __struct gl_contextRec::VertexProgram */ +#define _NEW_PROGRAM 0x8000000 /**< __struct gl_contextRec::VertexProgram */ +#define _NEW_CURRENT_ATTRIB 0x10000000 /**< __struct gl_contextRec::Current */ +#define _NEW_PROGRAM_CONSTANTS 0x20000000 +#define _NEW_BUFFER_OBJECT 0x40000000 +#define _NEW_ALL ~0 +/*@}*/ + + +/** + * \name Bits to track array state changes + * + * Also used to summarize array enabled. + */ +/*@{*/ +#define _NEW_ARRAY_VERTEX VERT_BIT_POS +#define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT +#define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL +#define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0 +#define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1 +#define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG +#define _NEW_ARRAY_INDEX VERT_BIT_COLOR_INDEX +#define _NEW_ARRAY_EDGEFLAG VERT_BIT_EDGEFLAG +#define _NEW_ARRAY_POINT_SIZE VERT_BIT_COLOR_INDEX /* aliased */ +#define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0 +#define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1 +#define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2 +#define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3 +#define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4 +#define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5 +#define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6 +#define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7 +#define _NEW_ARRAY_ATTRIB_0 VERT_BIT_GENERIC0 /* start at bit 16 */ +#define _NEW_ARRAY_ALL 0xffffffff + + +#define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i)) +#define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i)) +/*@}*/ + + + +/** + * \name A bunch of flags that we think might be useful to drivers. + * + * Set in the __struct gl_contextRec::_TriangleCaps bitfield. + */ +/*@{*/ +#define DD_FLATSHADE 0x1 +#define DD_SEPARATE_SPECULAR 0x2 +#define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */ +#define DD_TRI_LIGHT_TWOSIDE 0x8 +#define DD_TRI_UNFILLED 0x10 +#define DD_TRI_SMOOTH 0x20 +#define DD_TRI_STIPPLE 0x40 +#define DD_TRI_OFFSET 0x80 +#define DD_LINE_SMOOTH 0x100 +#define DD_LINE_STIPPLE 0x200 +#define DD_POINT_SMOOTH 0x400 +#define DD_POINT_ATTEN 0x800 +#define DD_TRI_TWOSTENCIL 0x1000 +/*@}*/ + + +/** + * \name Define the state changes under which each of these bits might change + */ +/*@{*/ +#define _DD_NEW_FLATSHADE _NEW_LIGHT +#define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM) +#define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON +#define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT +#define _DD_NEW_TRI_UNFILLED _NEW_POLYGON +#define _DD_NEW_TRI_SMOOTH _NEW_POLYGON +#define _DD_NEW_TRI_STIPPLE _NEW_POLYGON +#define _DD_NEW_TRI_OFFSET _NEW_POLYGON +#define _DD_NEW_LINE_SMOOTH _NEW_LINE +#define _DD_NEW_LINE_STIPPLE _NEW_LINE +#define _DD_NEW_LINE_WIDTH _NEW_LINE +#define _DD_NEW_POINT_SMOOTH _NEW_POINT +#define _DD_NEW_POINT_SIZE _NEW_POINT +#define _DD_NEW_POINT_ATTEN _NEW_POINT +/*@}*/ + + +/** + * Composite state flags + */ +/*@{*/ +#define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \ + _NEW_TEXTURE | \ + _NEW_POINT | \ + _NEW_PROGRAM | \ + _NEW_MODELVIEW) + +#define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \ + _NEW_TEXTURE) + +#define _MESA_NEW_TRANSFER_STATE (_NEW_PIXEL) +/*@}*/ + + + + +/* This has to be included here. */ +#include "dd.h" + + +/** + * Display list flags. + * Strictly this is a tnl-private concept, but it doesn't seem + * worthwhile adding a tnl private structure just to hold this one bit + * of information: + */ +#define DLIST_DANGLING_REFS 0x1 + + +/** Opaque declaration of display list payload data type */ +union gl_dlist_node; + + +/** + * Provide a location where information about a display list can be + * collected. Could be extended with driverPrivate structures, + * etc. in the future. + */ +struct gl_display_list +{ + GLuint Name; + GLbitfield Flags; /**< DLIST_x flags */ + /** The dlist commands are in a linked list of nodes */ + union gl_dlist_node *Head; +}; + + +/** + * State used during display list compilation and execution. + */ +struct gl_dlist_state +{ + GLuint CallDepth; /**< Current recursion calling depth */ + + struct gl_display_list *CurrentList; /**< List currently being compiled */ + union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */ + GLuint CurrentPos; /**< Index into current block of nodes */ + + GLvertexformat ListVtxfmt; + + GLubyte ActiveAttribSize[VERT_ATTRIB_MAX]; + GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4]; + + GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX]; + GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4]; + + GLubyte ActiveIndex; + GLfloat CurrentIndex; + + GLubyte ActiveEdgeFlag; + GLboolean CurrentEdgeFlag; + + struct { + /* State known to have been set by the currently-compiling display + * list. Used to eliminate some redundant state changes. + */ + GLenum ShadeModel; + } Current; +}; + +/** + * Enum for the OpenGL APIs we know about and may support. + */ +typedef enum { + API_OPENGL, + API_OPENGLES, + API_OPENGLES2 +} gl_api; + +/** + * Mesa rendering context. + * + * This is the central context data structure for Mesa. Almost all + * OpenGL state is contained in this structure. + * Think of this as a base class from which device drivers will derive + * sub classes. + * + * The struct gl_context typedef names this structure. + */ +struct gl_context +{ + /** State possibly shared with other contexts in the address space */ + struct gl_shared_state *Shared; + + /** \name API function pointer tables */ + /*@{*/ + gl_api API; + struct _glapi_table *Save; /**< Display list save functions */ + struct _glapi_table *Exec; /**< Execute functions */ + struct _glapi_table *CurrentDispatch; /**< == Save or Exec !! */ + /*@}*/ + + struct gl_config Visual; + struct gl_framebuffer *DrawBuffer; /**< buffer for writing */ + struct gl_framebuffer *ReadBuffer; /**< buffer for reading */ + struct gl_framebuffer *WinSysDrawBuffer; /**< set with MakeCurrent */ + struct gl_framebuffer *WinSysReadBuffer; /**< set with MakeCurrent */ + + /** + * Device driver function pointer table + */ + struct dd_function_table Driver; + + void *DriverCtx; /**< Points to device driver context/state */ + + /** Core/Driver constants */ + struct gl_constants Const; + + /** \name The various 4x4 matrix stacks */ + /*@{*/ + struct gl_matrix_stack ModelviewMatrixStack; + struct gl_matrix_stack ProjectionMatrixStack; + struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS]; + struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES]; + struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */ + /*@}*/ + + /** Combined modelview and projection matrix */ + GLmatrix _ModelProjectMatrix; + + /** \name Display lists */ + struct gl_dlist_state ListState; + + GLboolean ExecuteFlag; /**< Execute GL commands? */ + GLboolean CompileFlag; /**< Compile GL commands into display list? */ + + /** Extension information */ + struct gl_extensions Extensions; + + /** Version info */ + GLuint VersionMajor, VersionMinor; + char *VersionString; + + /** \name State attribute stack (for glPush/PopAttrib) */ + /*@{*/ + GLuint AttribStackDepth; + struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH]; + /*@}*/ + + /** \name Renderer attribute groups + * + * We define a struct for each attribute group to make pushing and popping + * attributes easy. Also it's a good organization. + */ + /*@{*/ + struct gl_accum_attrib Accum; /**< Accum buffer attributes */ + struct gl_colorbuffer_attrib Color; /**< Color buffer attributes */ + struct gl_current_attrib Current; /**< Current attributes */ + struct gl_depthbuffer_attrib Depth; /**< Depth buffer attributes */ + struct gl_eval_attrib Eval; /**< Eval attributes */ + struct gl_fog_attrib Fog; /**< Fog attributes */ + struct gl_hint_attrib Hint; /**< Hint attributes */ + struct gl_light_attrib Light; /**< Light attributes */ + struct gl_line_attrib Line; /**< Line attributes */ + struct gl_list_attrib List; /**< List attributes */ + struct gl_multisample_attrib Multisample; + struct gl_pixel_attrib Pixel; /**< Pixel attributes */ + struct gl_point_attrib Point; /**< Point attributes */ + struct gl_polygon_attrib Polygon; /**< Polygon attributes */ + GLuint PolygonStipple[32]; /**< Polygon stipple */ + struct gl_scissor_attrib Scissor; /**< Scissor attributes */ + struct gl_stencil_attrib Stencil; /**< Stencil buffer attributes */ + struct gl_texture_attrib Texture; /**< Texture attributes */ + struct gl_transform_attrib Transform; /**< Transformation attributes */ + struct gl_viewport_attrib Viewport; /**< Viewport attributes */ + /*@}*/ + + /** \name Client attribute stack */ + /*@{*/ + GLuint ClientAttribStackDepth; + struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH]; + /*@}*/ + + /** \name Client attribute groups */ + /*@{*/ + struct gl_array_attrib Array; /**< Vertex arrays */ + struct gl_pixelstore_attrib Pack; /**< Pixel packing */ + struct gl_pixelstore_attrib Unpack; /**< Pixel unpacking */ + struct gl_pixelstore_attrib DefaultPacking; /**< Default params */ + /*@}*/ + + /** \name Other assorted state (not pushed/popped on attribute stack) */ + /*@{*/ + struct gl_pixelmaps PixelMaps; + + struct gl_evaluators EvalMap; /**< All evaluators */ + struct gl_feedback Feedback; /**< Feedback */ + struct gl_selection Select; /**< Selection */ + + struct gl_program_state Program; /**< general program state */ + struct gl_vertex_program_state VertexProgram; + struct gl_fragment_program_state FragmentProgram; + struct gl_geometry_program_state GeometryProgram; + struct gl_ati_fragment_shader_state ATIFragmentShader; + + struct gl_shader_state Shader; /**< GLSL shader object state */ + struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES]; + + struct gl_query_state Query; /**< occlusion, timer queries */ + + struct gl_transform_feedback TransformFeedback; + + struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */ + struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */ + /*@}*/ + + struct gl_meta_state *Meta; /**< for "meta" operations */ + + /* GL_EXT_framebuffer_object */ + struct gl_renderbuffer *CurrentRenderbuffer; + + GLenum ErrorValue; /**< Last error code */ + + /** + * Recognize and silence repeated error debug messages in buggy apps. + */ + const char *ErrorDebugFmtString; + GLuint ErrorDebugCount; + + GLenum RenderMode; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */ + GLbitfield NewState; /**< bitwise-or of _NEW_* flags */ + + GLboolean ViewportInitialized; /**< has viewport size been initialized? */ + + GLbitfield varying_vp_inputs; /**< mask of VERT_BIT_* flags */ + + /** \name Derived state */ + /*@{*/ + /** Bitwise-or of DD_* flags. Note that this bitfield may be used before + * state validation so they need to always be current. + */ + GLbitfield _TriangleCaps; + GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */ + GLfloat _EyeZDir[3]; + GLfloat _ModelViewInvScale; + GLboolean _NeedEyeCoords; + GLboolean _ForceEyeCoords; + + GLuint TextureStateTimestamp; /**< detect changes to shared state */ + + struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */ + struct gl_shine_tab *_ShineTabList; /**< MRU list of inactive shine tables */ + /**@}*/ + + struct gl_list_extensions *ListExt; /**< driver dlist extensions */ + + /** \name For debugging/development only */ + /*@{*/ + GLboolean FirstTimeCurrent; + /*@}*/ + + /** Dither disable via MESA_NO_DITHER env var */ + GLboolean NoDither; + + /** software compression/decompression supported or not */ + GLboolean Mesa_DXTn; + + GLboolean TextureFormatSupported[MESA_FORMAT_COUNT]; + + /** + * Use dp4 (rather than mul/mad) instructions for position + * transformation? + */ + GLboolean mvp_with_dp4; + + /** + * \name Hooks for module contexts. + * + * These will eventually live in the driver or elsewhere. + */ + /*@{*/ + void *swrast_context; + void *swsetup_context; + void *swtnl_context; + void *swtnl_im; + struct st_context *st; + void *aelt_context; + /*@}*/ +}; + + +/** The string names for GL_POINT, GL_LINE_LOOP, etc */ +extern const char *_mesa_prim_name[GL_POLYGON+4]; + + +#ifdef DEBUG +extern int MESA_VERBOSE; +extern int MESA_DEBUG_FLAGS; +# define MESA_FUNCTION __FUNCTION__ +#else +# define MESA_VERBOSE 0 +# define MESA_DEBUG_FLAGS 0 +# define MESA_FUNCTION "a function" +# ifndef NDEBUG +# define NDEBUG +# endif +#endif + + +/** The MESA_VERBOSE var is a bitmask of these flags */ +enum _verbose +{ + VERBOSE_VARRAY = 0x0001, + VERBOSE_TEXTURE = 0x0002, + VERBOSE_MATERIAL = 0x0004, + VERBOSE_PIPELINE = 0x0008, + VERBOSE_DRIVER = 0x0010, + VERBOSE_STATE = 0x0020, + VERBOSE_API = 0x0040, + VERBOSE_DISPLAY_LIST = 0x0100, + VERBOSE_LIGHTING = 0x0200, + VERBOSE_PRIMS = 0x0400, + VERBOSE_VERTS = 0x0800, + VERBOSE_DISASSEM = 0x1000, + VERBOSE_DRAW = 0x2000, + VERBOSE_SWAPBUFFERS = 0x4000 +}; + + +/** The MESA_DEBUG_FLAGS var is a bitmask of these flags */ +enum _debug +{ + DEBUG_ALWAYS_FLUSH = 0x1 +}; + + + +#endif /* MTYPES_H */ |