diff options
Diffstat (limited to 'mesalib/src/glsl/glsl_parser_extras.cpp')
| -rw-r--r-- | mesalib/src/glsl/glsl_parser_extras.cpp | 1916 |
1 files changed, 958 insertions, 958 deletions
diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp index 5d66fe9d5..8faddc578 100644 --- a/mesalib/src/glsl/glsl_parser_extras.cpp +++ b/mesalib/src/glsl/glsl_parser_extras.cpp @@ -1,958 +1,958 @@ -/*
- * Copyright © 2008, 2009 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.
- */
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <assert.h>
-
-extern "C" {
-#include "main/core.h" /* for struct gl_context */
-}
-
-#include "ralloc.h"
-#include "ast.h"
-#include "glsl_parser_extras.h"
-#include "glsl_parser.h"
-#include "ir_optimization.h"
-#include "loop_analysis.h"
-
-_mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *ctx,
- GLenum target, void *mem_ctx)
-{
- switch (target) {
- case GL_VERTEX_SHADER: this->target = vertex_shader; break;
- case GL_FRAGMENT_SHADER: this->target = fragment_shader; break;
- case GL_GEOMETRY_SHADER: this->target = geometry_shader; break;
- }
-
- this->scanner = NULL;
- this->translation_unit.make_empty();
- this->symbols = new(mem_ctx) glsl_symbol_table;
- this->info_log = ralloc_strdup(mem_ctx, "");
- this->error = false;
- this->loop_or_switch_nesting = NULL;
-
- /* Set default language version and extensions */
- this->language_version = 110;
- this->es_shader = false;
- this->ARB_texture_rectangle_enable = true;
-
- /* OpenGL ES 2.0 has different defaults from desktop GL. */
- if (ctx->API == API_OPENGLES2) {
- this->language_version = 100;
- this->es_shader = true;
- this->ARB_texture_rectangle_enable = false;
- }
-
- this->extensions = &ctx->Extensions;
-
- this->Const.MaxLights = ctx->Const.MaxLights;
- this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes;
- this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits;
- this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits;
- this->Const.MaxVertexAttribs = ctx->Const.VertexProgram.MaxAttribs;
- this->Const.MaxVertexUniformComponents = ctx->Const.VertexProgram.MaxUniformComponents;
- this->Const.MaxVaryingFloats = ctx->Const.MaxVarying * 4;
- this->Const.MaxVertexTextureImageUnits = ctx->Const.MaxVertexTextureImageUnits;
- this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits;
- this->Const.MaxTextureImageUnits = ctx->Const.MaxTextureImageUnits;
- this->Const.MaxFragmentUniformComponents = ctx->Const.FragmentProgram.MaxUniformComponents;
-
- this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers;
-
- /* Note: Once the OpenGL 3.0 'forward compatible' context or the OpenGL 3.2
- * Core context is supported, this logic will need change. Older versions of
- * GLSL are no longer supported outside the compatibility contexts of 3.x.
- */
- this->Const.GLSL_100ES = (ctx->API == API_OPENGLES2)
- || ctx->Extensions.ARB_ES2_compatibility;
- this->Const.GLSL_110 = (ctx->API == API_OPENGL);
- this->Const.GLSL_120 = (ctx->API == API_OPENGL)
- && (ctx->Const.GLSLVersion >= 120);
- this->Const.GLSL_130 = (ctx->API == API_OPENGL)
- && (ctx->Const.GLSLVersion >= 130);
-
- const unsigned lowest_version =
- (ctx->API == API_OPENGLES2) || ctx->Extensions.ARB_ES2_compatibility
- ? 100 : 110;
- const unsigned highest_version =
- (ctx->API == API_OPENGL) ? ctx->Const.GLSLVersion : 100;
- char *supported = ralloc_strdup(this, "");
-
- for (unsigned ver = lowest_version; ver <= highest_version; ver += 10) {
- const char *const prefix = (ver == lowest_version)
- ? ""
- : ((ver == highest_version) ? ", and " : ", ");
-
- ralloc_asprintf_append(& supported, "%s%d.%02d%s",
- prefix,
- ver / 100, ver % 100,
- (ver == 100) ? " ES" : "");
- }
-
- this->supported_version_string = supported;
-}
-
-const char *
-_mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target)
-{
- switch (target) {
- case vertex_shader: return "vertex";
- case fragment_shader: return "fragment";
- case geometry_shader: return "geometry";
- }
-
- assert(!"Should not get here.");
- return "unknown";
-}
-
-
-void
-_mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
- const char *fmt, ...)
-{
- va_list ap;
-
- state->error = true;
-
- assert(state->info_log != NULL);
- ralloc_asprintf_append(&state->info_log, "%u:%u(%u): error: ",
- locp->source,
- locp->first_line,
- locp->first_column);
- va_start(ap, fmt);
- ralloc_vasprintf_append(&state->info_log, fmt, ap);
- va_end(ap);
- ralloc_strcat(&state->info_log, "\n");
-}
-
-
-void
-_mesa_glsl_warning(const YYLTYPE *locp, _mesa_glsl_parse_state *state,
- const char *fmt, ...)
-{
- va_list ap;
-
- assert(state->info_log != NULL);
- ralloc_asprintf_append(&state->info_log, "%u:%u(%u): warning: ",
- locp->source,
- locp->first_line,
- locp->first_column);
- va_start(ap, fmt);
- ralloc_vasprintf_append(&state->info_log, fmt, ap);
- va_end(ap);
- ralloc_strcat(&state->info_log, "\n");
-}
-
-
-/**
- * Enum representing the possible behaviors that can be specified in
- * an #extension directive.
- */
-enum ext_behavior {
- extension_disable,
- extension_enable,
- extension_require,
- extension_warn
-};
-
-/**
- * Element type for _mesa_glsl_supported_extensions
- */
-struct _mesa_glsl_extension {
- /**
- * Name of the extension when referred to in a GLSL extension
- * statement
- */
- const char *name;
-
- /** True if this extension is available to vertex shaders */
- bool avail_in_VS;
-
- /** True if this extension is available to geometry shaders */
- bool avail_in_GS;
-
- /** True if this extension is available to fragment shaders */
- bool avail_in_FS;
-
- /** True if this extension is available to desktop GL shaders */
- bool avail_in_GL;
-
- /** True if this extension is available to GLES shaders */
- bool avail_in_ES;
-
- /**
- * Flag in the gl_extensions struct indicating whether this
- * extension is supported by the driver, or
- * &gl_extensions::dummy_true if supported by all drivers.
- *
- * Note: the type (GLboolean gl_extensions::*) is a "pointer to
- * member" type, the type-safe alternative to the "offsetof" macro.
- * In a nutshell:
- *
- * - foo bar::* p declares p to be an "offset" to a field of type
- * foo that exists within struct bar
- * - &bar::baz computes the "offset" of field baz within struct bar
- * - x.*p accesses the field of x that exists at "offset" p
- * - x->*p is equivalent to (*x).*p
- */
- const GLboolean gl_extensions::* supported_flag;
-
- /**
- * Flag in the _mesa_glsl_parse_state struct that should be set
- * when this extension is enabled.
- *
- * See note in _mesa_glsl_extension::supported_flag about "pointer
- * to member" types.
- */
- bool _mesa_glsl_parse_state::* enable_flag;
-
- /**
- * Flag in the _mesa_glsl_parse_state struct that should be set
- * when the shader requests "warn" behavior for this extension.
- *
- * See note in _mesa_glsl_extension::supported_flag about "pointer
- * to member" types.
- */
- bool _mesa_glsl_parse_state::* warn_flag;
-
-
- bool compatible_with_state(const _mesa_glsl_parse_state *state) const;
- void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
-};
-
-#define EXT(NAME, VS, GS, FS, GL, ES, SUPPORTED_FLAG) \
- { "GL_" #NAME, VS, GS, FS, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
- &_mesa_glsl_parse_state::NAME##_enable, \
- &_mesa_glsl_parse_state::NAME##_warn }
-
-/**
- * Table of extensions that can be enabled/disabled within a shader,
- * and the conditions under which they are supported.
- */
-static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
- /* target availability API availability */
- /* name VS GS FS GL ES supported flag */
- EXT(ARB_conservative_depth, true, false, true, true, false, AMD_conservative_depth),
- EXT(ARB_draw_buffers, false, false, true, true, false, dummy_true),
- EXT(ARB_draw_instanced, true, false, false, true, false, ARB_draw_instanced),
- EXT(ARB_explicit_attrib_location, true, false, true, true, false, ARB_explicit_attrib_location),
- EXT(ARB_fragment_coord_conventions, true, false, true, true, false, ARB_fragment_coord_conventions),
- EXT(ARB_texture_rectangle, true, false, true, true, false, dummy_true),
- EXT(EXT_texture_array, true, false, true, true, false, EXT_texture_array),
- EXT(ARB_shader_texture_lod, true, false, true, true, false, ARB_shader_texture_lod),
- EXT(ARB_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export),
- EXT(AMD_conservative_depth, true, false, true, true, false, AMD_conservative_depth),
- EXT(AMD_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export),
- EXT(OES_texture_3D, true, false, true, false, true, EXT_texture3D),
-};
-
-#undef EXT
-
-
-/**
- * Determine whether a given extension is compatible with the target,
- * API, and extension information in the current parser state.
- */
-bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state *
- state) const
-{
- /* Check that this extension matches the type of shader we are
- * compiling to.
- */
- switch (state->target) {
- case vertex_shader:
- if (!this->avail_in_VS) {
- return false;
- }
- break;
- case geometry_shader:
- if (!this->avail_in_GS) {
- return false;
- }
- break;
- case fragment_shader:
- if (!this->avail_in_FS) {
- return false;
- }
- break;
- default:
- assert (!"Unrecognized shader target");
- return false;
- }
-
- /* Check that this extension matches whether we are compiling
- * for desktop GL or GLES.
- */
- if (state->es_shader) {
- if (!this->avail_in_ES) return false;
- } else {
- if (!this->avail_in_GL) return false;
- }
-
- /* Check that this extension is supported by the OpenGL
- * implementation.
- *
- * Note: the ->* operator indexes into state->extensions by the
- * offset this->supported_flag. See
- * _mesa_glsl_extension::supported_flag for more info.
- */
- return state->extensions->*(this->supported_flag);
-}
-
-/**
- * Set the appropriate flags in the parser state to establish the
- * given behavior for this extension.
- */
-void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state,
- ext_behavior behavior) const
-{
- /* Note: the ->* operator indexes into state by the
- * offsets this->enable_flag and this->warn_flag. See
- * _mesa_glsl_extension::supported_flag for more info.
- */
- state->*(this->enable_flag) = (behavior != extension_disable);
- state->*(this->warn_flag) = (behavior == extension_warn);
-}
-
-/**
- * Find an extension by name in _mesa_glsl_supported_extensions. If
- * the name is not found, return NULL.
- */
-static const _mesa_glsl_extension *find_extension(const char *name)
-{
- for (unsigned i = 0; i < Elements(_mesa_glsl_supported_extensions); ++i) {
- if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) {
- return &_mesa_glsl_supported_extensions[i];
- }
- }
- return NULL;
-}
-
-
-bool
-_mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
- const char *behavior_string, YYLTYPE *behavior_locp,
- _mesa_glsl_parse_state *state)
-{
- ext_behavior behavior;
- if (strcmp(behavior_string, "warn") == 0) {
- behavior = extension_warn;
- } else if (strcmp(behavior_string, "require") == 0) {
- behavior = extension_require;
- } else if (strcmp(behavior_string, "enable") == 0) {
- behavior = extension_enable;
- } else if (strcmp(behavior_string, "disable") == 0) {
- behavior = extension_disable;
- } else {
- _mesa_glsl_error(behavior_locp, state,
- "Unknown extension behavior `%s'",
- behavior_string);
- return false;
- }
-
- if (strcmp(name, "all") == 0) {
- if ((behavior == extension_enable) || (behavior == extension_require)) {
- _mesa_glsl_error(name_locp, state, "Cannot %s all extensions",
- (behavior == extension_enable)
- ? "enable" : "require");
- return false;
- } else {
- for (unsigned i = 0;
- i < Elements(_mesa_glsl_supported_extensions); ++i) {
- const _mesa_glsl_extension *extension
- = &_mesa_glsl_supported_extensions[i];
- if (extension->compatible_with_state(state)) {
- _mesa_glsl_supported_extensions[i].set_flags(state, behavior);
- }
- }
- }
- } else {
- const _mesa_glsl_extension *extension = find_extension(name);
- if (extension && extension->compatible_with_state(state)) {
- extension->set_flags(state, behavior);
- } else {
- static const char *const fmt = "extension `%s' unsupported in %s shader";
-
- if (behavior == extension_require) {
- _mesa_glsl_error(name_locp, state, fmt,
- name, _mesa_glsl_shader_target_name(state->target));
- return false;
- } else {
- _mesa_glsl_warning(name_locp, state, fmt,
- name, _mesa_glsl_shader_target_name(state->target));
- }
- }
- }
-
- return true;
-}
-
-void
-_mesa_ast_type_qualifier_print(const struct ast_type_qualifier *q)
-{
- if (q->flags.q.constant)
- printf("const ");
-
- if (q->flags.q.invariant)
- printf("invariant ");
-
- if (q->flags.q.attribute)
- printf("attribute ");
-
- if (q->flags.q.varying)
- printf("varying ");
-
- if (q->flags.q.in && q->flags.q.out)
- printf("inout ");
- else {
- if (q->flags.q.in)
- printf("in ");
-
- if (q->flags.q.out)
- printf("out ");
- }
-
- if (q->flags.q.centroid)
- printf("centroid ");
- if (q->flags.q.uniform)
- printf("uniform ");
- if (q->flags.q.smooth)
- printf("smooth ");
- if (q->flags.q.flat)
- printf("flat ");
- if (q->flags.q.noperspective)
- printf("noperspective ");
-}
-
-
-void
-ast_node::print(void) const
-{
- printf("unhandled node ");
-}
-
-
-ast_node::ast_node(void)
-{
- this->location.source = 0;
- this->location.line = 0;
- this->location.column = 0;
-}
-
-
-static void
-ast_opt_array_size_print(bool is_array, const ast_expression *array_size)
-{
- if (is_array) {
- printf("[ ");
-
- if (array_size)
- array_size->print();
-
- printf("] ");
- }
-}
-
-
-void
-ast_compound_statement::print(void) const
-{
- printf("{\n");
-
- foreach_list_const(n, &this->statements) {
- ast_node *ast = exec_node_data(ast_node, n, link);
- ast->print();
- }
-
- printf("}\n");
-}
-
-
-ast_compound_statement::ast_compound_statement(int new_scope,
- ast_node *statements)
-{
- this->new_scope = new_scope;
-
- if (statements != NULL) {
- this->statements.push_degenerate_list_at_head(&statements->link);
- }
-}
-
-
-void
-ast_expression::print(void) const
-{
- switch (oper) {
- case ast_assign:
- case ast_mul_assign:
- case ast_div_assign:
- case ast_mod_assign:
- case ast_add_assign:
- case ast_sub_assign:
- case ast_ls_assign:
- case ast_rs_assign:
- case ast_and_assign:
- case ast_xor_assign:
- case ast_or_assign:
- subexpressions[0]->print();
- printf("%s ", operator_string(oper));
- subexpressions[1]->print();
- break;
-
- case ast_field_selection:
- subexpressions[0]->print();
- printf(". %s ", primary_expression.identifier);
- break;
-
- case ast_plus:
- case ast_neg:
- case ast_bit_not:
- case ast_logic_not:
- case ast_pre_inc:
- case ast_pre_dec:
- printf("%s ", operator_string(oper));
- subexpressions[0]->print();
- break;
-
- case ast_post_inc:
- case ast_post_dec:
- subexpressions[0]->print();
- printf("%s ", operator_string(oper));
- break;
-
- case ast_conditional:
- subexpressions[0]->print();
- printf("? ");
- subexpressions[1]->print();
- printf(": ");
- subexpressions[2]->print();
- break;
-
- case ast_array_index:
- subexpressions[0]->print();
- printf("[ ");
- subexpressions[1]->print();
- printf("] ");
- break;
-
- case ast_function_call: {
- subexpressions[0]->print();
- printf("( ");
-
- foreach_list_const (n, &this->expressions) {
- if (n != this->expressions.get_head())
- printf(", ");
-
- ast_node *ast = exec_node_data(ast_node, n, link);
- ast->print();
- }
-
- printf(") ");
- break;
- }
-
- case ast_identifier:
- printf("%s ", primary_expression.identifier);
- break;
-
- case ast_int_constant:
- printf("%d ", primary_expression.int_constant);
- break;
-
- case ast_uint_constant:
- printf("%u ", primary_expression.uint_constant);
- break;
-
- case ast_float_constant:
- printf("%f ", primary_expression.float_constant);
- break;
-
- case ast_bool_constant:
- printf("%s ",
- primary_expression.bool_constant
- ? "true" : "false");
- break;
-
- case ast_sequence: {
- printf("( ");
- foreach_list_const(n, & this->expressions) {
- if (n != this->expressions.get_head())
- printf(", ");
-
- ast_node *ast = exec_node_data(ast_node, n, link);
- ast->print();
- }
- printf(") ");
- break;
- }
-
- default:
- assert(0);
- break;
- }
-}
-
-ast_expression::ast_expression(int oper,
- ast_expression *ex0,
- ast_expression *ex1,
- ast_expression *ex2)
-{
- this->oper = ast_operators(oper);
- this->subexpressions[0] = ex0;
- this->subexpressions[1] = ex1;
- this->subexpressions[2] = ex2;
-}
-
-
-void
-ast_expression_statement::print(void) const
-{
- if (expression)
- expression->print();
-
- printf("; ");
-}
-
-
-ast_expression_statement::ast_expression_statement(ast_expression *ex) :
- expression(ex)
-{
- /* empty */
-}
-
-
-void
-ast_function::print(void) const
-{
- return_type->print();
- printf(" %s (", identifier);
-
- foreach_list_const(n, & this->parameters) {
- ast_node *ast = exec_node_data(ast_node, n, link);
- ast->print();
- }
-
- printf(")");
-}
-
-
-ast_function::ast_function(void)
- : is_definition(false), signature(NULL)
-{
- /* empty */
-}
-
-
-void
-ast_fully_specified_type::print(void) const
-{
- _mesa_ast_type_qualifier_print(& qualifier);
- specifier->print();
-}
-
-
-void
-ast_parameter_declarator::print(void) const
-{
- type->print();
- if (identifier)
- printf("%s ", identifier);
- ast_opt_array_size_print(is_array, array_size);
-}
-
-
-void
-ast_function_definition::print(void) const
-{
- prototype->print();
- body->print();
-}
-
-
-void
-ast_declaration::print(void) const
-{
- printf("%s ", identifier);
- ast_opt_array_size_print(is_array, array_size);
-
- if (initializer) {
- printf("= ");
- initializer->print();
- }
-}
-
-
-ast_declaration::ast_declaration(char *identifier, int is_array,
- ast_expression *array_size,
- ast_expression *initializer)
-{
- this->identifier = identifier;
- this->is_array = is_array;
- this->array_size = array_size;
- this->initializer = initializer;
-}
-
-
-void
-ast_declarator_list::print(void) const
-{
- assert(type || invariant);
-
- if (type)
- type->print();
- else
- printf("invariant ");
-
- foreach_list_const (ptr, & this->declarations) {
- if (ptr != this->declarations.get_head())
- printf(", ");
-
- ast_node *ast = exec_node_data(ast_node, ptr, link);
- ast->print();
- }
-
- printf("; ");
-}
-
-
-ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type)
-{
- this->type = type;
- this->invariant = false;
-}
-
-void
-ast_jump_statement::print(void) const
-{
- switch (mode) {
- case ast_continue:
- printf("continue; ");
- break;
- case ast_break:
- printf("break; ");
- break;
- case ast_return:
- printf("return ");
- if (opt_return_value)
- opt_return_value->print();
-
- printf("; ");
- break;
- case ast_discard:
- printf("discard; ");
- break;
- }
-}
-
-
-ast_jump_statement::ast_jump_statement(int mode, ast_expression *return_value)
-{
- this->mode = ast_jump_modes(mode);
-
- if (mode == ast_return)
- opt_return_value = return_value;
-}
-
-
-void
-ast_selection_statement::print(void) const
-{
- printf("if ( ");
- condition->print();
- printf(") ");
-
- then_statement->print();
-
- if (else_statement) {
- printf("else ");
- else_statement->print();
- }
-
-}
-
-
-ast_selection_statement::ast_selection_statement(ast_expression *condition,
- ast_node *then_statement,
- ast_node *else_statement)
-{
- this->condition = condition;
- this->then_statement = then_statement;
- this->else_statement = else_statement;
-}
-
-
-void
-ast_iteration_statement::print(void) const
-{
- switch (mode) {
- case ast_for:
- printf("for( ");
- if (init_statement)
- init_statement->print();
- printf("; ");
-
- if (condition)
- condition->print();
- printf("; ");
-
- if (rest_expression)
- rest_expression->print();
- printf(") ");
-
- body->print();
- break;
-
- case ast_while:
- printf("while ( ");
- if (condition)
- condition->print();
- printf(") ");
- body->print();
- break;
-
- case ast_do_while:
- printf("do ");
- body->print();
- printf("while ( ");
- if (condition)
- condition->print();
- printf("); ");
- break;
- }
-}
-
-
-ast_iteration_statement::ast_iteration_statement(int mode,
- ast_node *init,
- ast_node *condition,
- ast_expression *rest_expression,
- ast_node *body)
-{
- this->mode = ast_iteration_modes(mode);
- this->init_statement = init;
- this->condition = condition;
- this->rest_expression = rest_expression;
- this->body = body;
-}
-
-
-void
-ast_struct_specifier::print(void) const
-{
- printf("struct %s { ", name);
- foreach_list_const(n, &this->declarations) {
- ast_node *ast = exec_node_data(ast_node, n, link);
- ast->print();
- }
- printf("} ");
-}
-
-
-ast_struct_specifier::ast_struct_specifier(char *identifier,
- ast_node *declarator_list)
-{
- if (identifier == NULL) {
- static unsigned anon_count = 1;
- identifier = ralloc_asprintf(this, "#anon_struct_%04x", anon_count);
- anon_count++;
- }
- name = identifier;
- this->declarations.push_degenerate_list_at_head(&declarator_list->link);
-}
-
-bool
-do_common_optimization(exec_list *ir, bool linked, unsigned max_unroll_iterations)
-{
- GLboolean progress = GL_FALSE;
-
- progress = lower_instructions(ir, SUB_TO_ADD_NEG) || progress;
-
- if (linked) {
- progress = do_function_inlining(ir) || progress;
- progress = do_dead_functions(ir) || progress;
- progress = do_structure_splitting(ir) || progress;
- }
- progress = do_if_simplification(ir) || progress;
- progress = do_discard_simplification(ir) || progress;
- progress = do_copy_propagation(ir) || progress;
- progress = do_copy_propagation_elements(ir) || progress;
- if (linked)
- progress = do_dead_code(ir) || progress;
- else
- progress = do_dead_code_unlinked(ir) || progress;
- progress = do_dead_code_local(ir) || progress;
- progress = do_tree_grafting(ir) || progress;
- progress = do_constant_propagation(ir) || progress;
- if (linked)
- progress = do_constant_variable(ir) || progress;
- else
- progress = do_constant_variable_unlinked(ir) || progress;
- progress = do_constant_folding(ir) || progress;
- progress = do_algebraic(ir) || progress;
- progress = do_lower_jumps(ir) || progress;
- progress = do_vec_index_to_swizzle(ir) || progress;
- progress = do_swizzle_swizzle(ir) || progress;
- progress = do_noop_swizzle(ir) || progress;
-
- progress = optimize_redundant_jumps(ir) || progress;
-
- loop_state *ls = analyze_loop_variables(ir);
- if (ls->loop_found) {
- progress = set_loop_controls(ir, ls) || progress;
- progress = unroll_loops(ir, ls, max_unroll_iterations) || progress;
- }
- delete ls;
-
- return progress;
-}
-
-extern "C" {
-
-/**
- * To be called at GL teardown time, this frees compiler datastructures.
- *
- * After calling this, any previously compiled shaders and shader
- * programs would be invalid. So this should happen at approximately
- * program exit.
- */
-void
-_mesa_destroy_shader_compiler(void)
-{
- _mesa_destroy_shader_compiler_caches();
-
- _mesa_glsl_release_types();
-}
-
-/**
- * Releases compiler caches to trade off performance for memory.
- *
- * Intended to be used with glReleaseShaderCompiler().
- */
-void
-_mesa_destroy_shader_compiler_caches(void)
-{
- _mesa_glsl_release_functions();
-}
-
-}
+/* + * Copyright © 2008, 2009 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. + */ +#include <stdio.h> +#include <stdarg.h> +#include <string.h> +#include <assert.h> + +extern "C" { +#include "main/core.h" /* for struct gl_context */ +} + +#include "ralloc.h" +#include "ast.h" +#include "glsl_parser_extras.h" +#include "glsl_parser.h" +#include "ir_optimization.h" +#include "loop_analysis.h" + +_mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *ctx, + GLenum target, void *mem_ctx) +{ + switch (target) { + case GL_VERTEX_SHADER: this->target = vertex_shader; break; + case GL_FRAGMENT_SHADER: this->target = fragment_shader; break; + case GL_GEOMETRY_SHADER: this->target = geometry_shader; break; + } + + this->scanner = NULL; + this->translation_unit.make_empty(); + this->symbols = new(mem_ctx) glsl_symbol_table; + this->info_log = ralloc_strdup(mem_ctx, ""); + this->error = false; + this->loop_or_switch_nesting = NULL; + + /* Set default language version and extensions */ + this->language_version = 110; + this->es_shader = false; + this->ARB_texture_rectangle_enable = true; + + /* OpenGL ES 2.0 has different defaults from desktop GL. */ + if (ctx->API == API_OPENGLES2) { + this->language_version = 100; + this->es_shader = true; + this->ARB_texture_rectangle_enable = false; + } + + this->extensions = &ctx->Extensions; + + this->Const.MaxLights = ctx->Const.MaxLights; + this->Const.MaxClipPlanes = ctx->Const.MaxClipPlanes; + this->Const.MaxTextureUnits = ctx->Const.MaxTextureUnits; + this->Const.MaxTextureCoords = ctx->Const.MaxTextureCoordUnits; + this->Const.MaxVertexAttribs = ctx->Const.VertexProgram.MaxAttribs; + this->Const.MaxVertexUniformComponents = ctx->Const.VertexProgram.MaxUniformComponents; + this->Const.MaxVaryingFloats = ctx->Const.MaxVarying * 4; + this->Const.MaxVertexTextureImageUnits = ctx->Const.MaxVertexTextureImageUnits; + this->Const.MaxCombinedTextureImageUnits = ctx->Const.MaxCombinedTextureImageUnits; + this->Const.MaxTextureImageUnits = ctx->Const.MaxTextureImageUnits; + this->Const.MaxFragmentUniformComponents = ctx->Const.FragmentProgram.MaxUniformComponents; + + this->Const.MaxDrawBuffers = ctx->Const.MaxDrawBuffers; + + /* Note: Once the OpenGL 3.0 'forward compatible' context or the OpenGL 3.2 + * Core context is supported, this logic will need change. Older versions of + * GLSL are no longer supported outside the compatibility contexts of 3.x. + */ + this->Const.GLSL_100ES = (ctx->API == API_OPENGLES2) + || ctx->Extensions.ARB_ES2_compatibility; + this->Const.GLSL_110 = (ctx->API == API_OPENGL); + this->Const.GLSL_120 = (ctx->API == API_OPENGL) + && (ctx->Const.GLSLVersion >= 120); + this->Const.GLSL_130 = (ctx->API == API_OPENGL) + && (ctx->Const.GLSLVersion >= 130); + + const unsigned lowest_version = + (ctx->API == API_OPENGLES2) || ctx->Extensions.ARB_ES2_compatibility + ? 100 : 110; + const unsigned highest_version = + (ctx->API == API_OPENGL) ? ctx->Const.GLSLVersion : 100; + char *supported = ralloc_strdup(this, ""); + + for (unsigned ver = lowest_version; ver <= highest_version; ver += 10) { + const char *const prefix = (ver == lowest_version) + ? "" + : ((ver == highest_version) ? ", and " : ", "); + + ralloc_asprintf_append(& supported, "%s%d.%02d%s", + prefix, + ver / 100, ver % 100, + (ver == 100) ? " ES" : ""); + } + + this->supported_version_string = supported; +} + +const char * +_mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target) +{ + switch (target) { + case vertex_shader: return "vertex"; + case fragment_shader: return "fragment"; + case geometry_shader: return "geometry"; + } + + assert(!"Should not get here."); + return "unknown"; +} + + +void +_mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state, + const char *fmt, ...) +{ + va_list ap; + + state->error = true; + + assert(state->info_log != NULL); + ralloc_asprintf_append(&state->info_log, "%u:%u(%u): error: ", + locp->source, + locp->first_line, + locp->first_column); + va_start(ap, fmt); + ralloc_vasprintf_append(&state->info_log, fmt, ap); + va_end(ap); + ralloc_strcat(&state->info_log, "\n"); +} + + +void +_mesa_glsl_warning(const YYLTYPE *locp, _mesa_glsl_parse_state *state, + const char *fmt, ...) +{ + va_list ap; + + assert(state->info_log != NULL); + ralloc_asprintf_append(&state->info_log, "%u:%u(%u): warning: ", + locp->source, + locp->first_line, + locp->first_column); + va_start(ap, fmt); + ralloc_vasprintf_append(&state->info_log, fmt, ap); + va_end(ap); + ralloc_strcat(&state->info_log, "\n"); +} + + +/** + * Enum representing the possible behaviors that can be specified in + * an #extension directive. + */ +enum ext_behavior { + extension_disable, + extension_enable, + extension_require, + extension_warn +}; + +/** + * Element type for _mesa_glsl_supported_extensions + */ +struct _mesa_glsl_extension { + /** + * Name of the extension when referred to in a GLSL extension + * statement + */ + const char *name; + + /** True if this extension is available to vertex shaders */ + bool avail_in_VS; + + /** True if this extension is available to geometry shaders */ + bool avail_in_GS; + + /** True if this extension is available to fragment shaders */ + bool avail_in_FS; + + /** True if this extension is available to desktop GL shaders */ + bool avail_in_GL; + + /** True if this extension is available to GLES shaders */ + bool avail_in_ES; + + /** + * Flag in the gl_extensions struct indicating whether this + * extension is supported by the driver, or + * &gl_extensions::dummy_true if supported by all drivers. + * + * Note: the type (GLboolean gl_extensions::*) is a "pointer to + * member" type, the type-safe alternative to the "offsetof" macro. + * In a nutshell: + * + * - foo bar::* p declares p to be an "offset" to a field of type + * foo that exists within struct bar + * - &bar::baz computes the "offset" of field baz within struct bar + * - x.*p accesses the field of x that exists at "offset" p + * - x->*p is equivalent to (*x).*p + */ + const GLboolean gl_extensions::* supported_flag; + + /** + * Flag in the _mesa_glsl_parse_state struct that should be set + * when this extension is enabled. + * + * See note in _mesa_glsl_extension::supported_flag about "pointer + * to member" types. + */ + bool _mesa_glsl_parse_state::* enable_flag; + + /** + * Flag in the _mesa_glsl_parse_state struct that should be set + * when the shader requests "warn" behavior for this extension. + * + * See note in _mesa_glsl_extension::supported_flag about "pointer + * to member" types. + */ + bool _mesa_glsl_parse_state::* warn_flag; + + + bool compatible_with_state(const _mesa_glsl_parse_state *state) const; + void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const; +}; + +#define EXT(NAME, VS, GS, FS, GL, ES, SUPPORTED_FLAG) \ + { "GL_" #NAME, VS, GS, FS, GL, ES, &gl_extensions::SUPPORTED_FLAG, \ + &_mesa_glsl_parse_state::NAME##_enable, \ + &_mesa_glsl_parse_state::NAME##_warn } + +/** + * Table of extensions that can be enabled/disabled within a shader, + * and the conditions under which they are supported. + */ +static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = { + /* target availability API availability */ + /* name VS GS FS GL ES supported flag */ + EXT(ARB_conservative_depth, true, false, true, true, false, AMD_conservative_depth), + EXT(ARB_draw_buffers, false, false, true, true, false, dummy_true), + EXT(ARB_draw_instanced, true, false, false, true, false, ARB_draw_instanced), + EXT(ARB_explicit_attrib_location, true, false, true, true, false, ARB_explicit_attrib_location), + EXT(ARB_fragment_coord_conventions, true, false, true, true, false, ARB_fragment_coord_conventions), + EXT(ARB_texture_rectangle, true, false, true, true, false, dummy_true), + EXT(EXT_texture_array, true, false, true, true, false, EXT_texture_array), + EXT(ARB_shader_texture_lod, true, false, true, true, false, ARB_shader_texture_lod), + EXT(ARB_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export), + EXT(AMD_conservative_depth, true, false, true, true, false, AMD_conservative_depth), + EXT(AMD_shader_stencil_export, false, false, true, true, false, ARB_shader_stencil_export), + EXT(OES_texture_3D, true, false, true, false, true, EXT_texture3D), +}; + +#undef EXT + + +/** + * Determine whether a given extension is compatible with the target, + * API, and extension information in the current parser state. + */ +bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state * + state) const +{ + /* Check that this extension matches the type of shader we are + * compiling to. + */ + switch (state->target) { + case vertex_shader: + if (!this->avail_in_VS) { + return false; + } + break; + case geometry_shader: + if (!this->avail_in_GS) { + return false; + } + break; + case fragment_shader: + if (!this->avail_in_FS) { + return false; + } + break; + default: + assert (!"Unrecognized shader target"); + return false; + } + + /* Check that this extension matches whether we are compiling + * for desktop GL or GLES. + */ + if (state->es_shader) { + if (!this->avail_in_ES) return false; + } else { + if (!this->avail_in_GL) return false; + } + + /* Check that this extension is supported by the OpenGL + * implementation. + * + * Note: the ->* operator indexes into state->extensions by the + * offset this->supported_flag. See + * _mesa_glsl_extension::supported_flag for more info. + */ + return state->extensions->*(this->supported_flag); +} + +/** + * Set the appropriate flags in the parser state to establish the + * given behavior for this extension. + */ +void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state *state, + ext_behavior behavior) const +{ + /* Note: the ->* operator indexes into state by the + * offsets this->enable_flag and this->warn_flag. See + * _mesa_glsl_extension::supported_flag for more info. + */ + state->*(this->enable_flag) = (behavior != extension_disable); + state->*(this->warn_flag) = (behavior == extension_warn); +} + +/** + * Find an extension by name in _mesa_glsl_supported_extensions. If + * the name is not found, return NULL. + */ +static const _mesa_glsl_extension *find_extension(const char *name) +{ + for (unsigned i = 0; i < Elements(_mesa_glsl_supported_extensions); ++i) { + if (strcmp(name, _mesa_glsl_supported_extensions[i].name) == 0) { + return &_mesa_glsl_supported_extensions[i]; + } + } + return NULL; +} + + +bool +_mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp, + const char *behavior_string, YYLTYPE *behavior_locp, + _mesa_glsl_parse_state *state) +{ + ext_behavior behavior; + if (strcmp(behavior_string, "warn") == 0) { + behavior = extension_warn; + } else if (strcmp(behavior_string, "require") == 0) { + behavior = extension_require; + } else if (strcmp(behavior_string, "enable") == 0) { + behavior = extension_enable; + } else if (strcmp(behavior_string, "disable") == 0) { + behavior = extension_disable; + } else { + _mesa_glsl_error(behavior_locp, state, + "Unknown extension behavior `%s'", + behavior_string); + return false; + } + + if (strcmp(name, "all") == 0) { + if ((behavior == extension_enable) || (behavior == extension_require)) { + _mesa_glsl_error(name_locp, state, "Cannot %s all extensions", + (behavior == extension_enable) + ? "enable" : "require"); + return false; + } else { + for (unsigned i = 0; + i < Elements(_mesa_glsl_supported_extensions); ++i) { + const _mesa_glsl_extension *extension + = &_mesa_glsl_supported_extensions[i]; + if (extension->compatible_with_state(state)) { + _mesa_glsl_supported_extensions[i].set_flags(state, behavior); + } + } + } + } else { + const _mesa_glsl_extension *extension = find_extension(name); + if (extension && extension->compatible_with_state(state)) { + extension->set_flags(state, behavior); + } else { + static const char *const fmt = "extension `%s' unsupported in %s shader"; + + if (behavior == extension_require) { + _mesa_glsl_error(name_locp, state, fmt, + name, _mesa_glsl_shader_target_name(state->target)); + return false; + } else { + _mesa_glsl_warning(name_locp, state, fmt, + name, _mesa_glsl_shader_target_name(state->target)); + } + } + } + + return true; +} + +void +_mesa_ast_type_qualifier_print(const struct ast_type_qualifier *q) +{ + if (q->flags.q.constant) + printf("const "); + + if (q->flags.q.invariant) + printf("invariant "); + + if (q->flags.q.attribute) + printf("attribute "); + + if (q->flags.q.varying) + printf("varying "); + + if (q->flags.q.in && q->flags.q.out) + printf("inout "); + else { + if (q->flags.q.in) + printf("in "); + + if (q->flags.q.out) + printf("out "); + } + + if (q->flags.q.centroid) + printf("centroid "); + if (q->flags.q.uniform) + printf("uniform "); + if (q->flags.q.smooth) + printf("smooth "); + if (q->flags.q.flat) + printf("flat "); + if (q->flags.q.noperspective) + printf("noperspective "); +} + + +void +ast_node::print(void) const +{ + printf("unhandled node "); +} + + +ast_node::ast_node(void) +{ + this->location.source = 0; + this->location.line = 0; + this->location.column = 0; +} + + +static void +ast_opt_array_size_print(bool is_array, const ast_expression *array_size) +{ + if (is_array) { + printf("[ "); + + if (array_size) + array_size->print(); + + printf("] "); + } +} + + +void +ast_compound_statement::print(void) const +{ + printf("{\n"); + + foreach_list_const(n, &this->statements) { + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + + printf("}\n"); +} + + +ast_compound_statement::ast_compound_statement(int new_scope, + ast_node *statements) +{ + this->new_scope = new_scope; + + if (statements != NULL) { + this->statements.push_degenerate_list_at_head(&statements->link); + } +} + + +void +ast_expression::print(void) const +{ + switch (oper) { + case ast_assign: + case ast_mul_assign: + case ast_div_assign: + case ast_mod_assign: + case ast_add_assign: + case ast_sub_assign: + case ast_ls_assign: + case ast_rs_assign: + case ast_and_assign: + case ast_xor_assign: + case ast_or_assign: + subexpressions[0]->print(); + printf("%s ", operator_string(oper)); + subexpressions[1]->print(); + break; + + case ast_field_selection: + subexpressions[0]->print(); + printf(". %s ", primary_expression.identifier); + break; + + case ast_plus: + case ast_neg: + case ast_bit_not: + case ast_logic_not: + case ast_pre_inc: + case ast_pre_dec: + printf("%s ", operator_string(oper)); + subexpressions[0]->print(); + break; + + case ast_post_inc: + case ast_post_dec: + subexpressions[0]->print(); + printf("%s ", operator_string(oper)); + break; + + case ast_conditional: + subexpressions[0]->print(); + printf("? "); + subexpressions[1]->print(); + printf(": "); + subexpressions[2]->print(); + break; + + case ast_array_index: + subexpressions[0]->print(); + printf("[ "); + subexpressions[1]->print(); + printf("] "); + break; + + case ast_function_call: { + subexpressions[0]->print(); + printf("( "); + + foreach_list_const (n, &this->expressions) { + if (n != this->expressions.get_head()) + printf(", "); + + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + + printf(") "); + break; + } + + case ast_identifier: + printf("%s ", primary_expression.identifier); + break; + + case ast_int_constant: + printf("%d ", primary_expression.int_constant); + break; + + case ast_uint_constant: + printf("%u ", primary_expression.uint_constant); + break; + + case ast_float_constant: + printf("%f ", primary_expression.float_constant); + break; + + case ast_bool_constant: + printf("%s ", + primary_expression.bool_constant + ? "true" : "false"); + break; + + case ast_sequence: { + printf("( "); + foreach_list_const(n, & this->expressions) { + if (n != this->expressions.get_head()) + printf(", "); + + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + printf(") "); + break; + } + + default: + assert(0); + break; + } +} + +ast_expression::ast_expression(int oper, + ast_expression *ex0, + ast_expression *ex1, + ast_expression *ex2) +{ + this->oper = ast_operators(oper); + this->subexpressions[0] = ex0; + this->subexpressions[1] = ex1; + this->subexpressions[2] = ex2; +} + + +void +ast_expression_statement::print(void) const +{ + if (expression) + expression->print(); + + printf("; "); +} + + +ast_expression_statement::ast_expression_statement(ast_expression *ex) : + expression(ex) +{ + /* empty */ +} + + +void +ast_function::print(void) const +{ + return_type->print(); + printf(" %s (", identifier); + + foreach_list_const(n, & this->parameters) { + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + + printf(")"); +} + + +ast_function::ast_function(void) + : is_definition(false), signature(NULL) +{ + /* empty */ +} + + +void +ast_fully_specified_type::print(void) const +{ + _mesa_ast_type_qualifier_print(& qualifier); + specifier->print(); +} + + +void +ast_parameter_declarator::print(void) const +{ + type->print(); + if (identifier) + printf("%s ", identifier); + ast_opt_array_size_print(is_array, array_size); +} + + +void +ast_function_definition::print(void) const +{ + prototype->print(); + body->print(); +} + + +void +ast_declaration::print(void) const +{ + printf("%s ", identifier); + ast_opt_array_size_print(is_array, array_size); + + if (initializer) { + printf("= "); + initializer->print(); + } +} + + +ast_declaration::ast_declaration(char *identifier, int is_array, + ast_expression *array_size, + ast_expression *initializer) +{ + this->identifier = identifier; + this->is_array = is_array; + this->array_size = array_size; + this->initializer = initializer; +} + + +void +ast_declarator_list::print(void) const +{ + assert(type || invariant); + + if (type) + type->print(); + else + printf("invariant "); + + foreach_list_const (ptr, & this->declarations) { + if (ptr != this->declarations.get_head()) + printf(", "); + + ast_node *ast = exec_node_data(ast_node, ptr, link); + ast->print(); + } + + printf("; "); +} + + +ast_declarator_list::ast_declarator_list(ast_fully_specified_type *type) +{ + this->type = type; + this->invariant = false; +} + +void +ast_jump_statement::print(void) const +{ + switch (mode) { + case ast_continue: + printf("continue; "); + break; + case ast_break: + printf("break; "); + break; + case ast_return: + printf("return "); + if (opt_return_value) + opt_return_value->print(); + + printf("; "); + break; + case ast_discard: + printf("discard; "); + break; + } +} + + +ast_jump_statement::ast_jump_statement(int mode, ast_expression *return_value) +{ + this->mode = ast_jump_modes(mode); + + if (mode == ast_return) + opt_return_value = return_value; +} + + +void +ast_selection_statement::print(void) const +{ + printf("if ( "); + condition->print(); + printf(") "); + + then_statement->print(); + + if (else_statement) { + printf("else "); + else_statement->print(); + } + +} + + +ast_selection_statement::ast_selection_statement(ast_expression *condition, + ast_node *then_statement, + ast_node *else_statement) +{ + this->condition = condition; + this->then_statement = then_statement; + this->else_statement = else_statement; +} + + +void +ast_iteration_statement::print(void) const +{ + switch (mode) { + case ast_for: + printf("for( "); + if (init_statement) + init_statement->print(); + printf("; "); + + if (condition) + condition->print(); + printf("; "); + + if (rest_expression) + rest_expression->print(); + printf(") "); + + body->print(); + break; + + case ast_while: + printf("while ( "); + if (condition) + condition->print(); + printf(") "); + body->print(); + break; + + case ast_do_while: + printf("do "); + body->print(); + printf("while ( "); + if (condition) + condition->print(); + printf("); "); + break; + } +} + + +ast_iteration_statement::ast_iteration_statement(int mode, + ast_node *init, + ast_node *condition, + ast_expression *rest_expression, + ast_node *body) +{ + this->mode = ast_iteration_modes(mode); + this->init_statement = init; + this->condition = condition; + this->rest_expression = rest_expression; + this->body = body; +} + + +void +ast_struct_specifier::print(void) const +{ + printf("struct %s { ", name); + foreach_list_const(n, &this->declarations) { + ast_node *ast = exec_node_data(ast_node, n, link); + ast->print(); + } + printf("} "); +} + + +ast_struct_specifier::ast_struct_specifier(char *identifier, + ast_node *declarator_list) +{ + if (identifier == NULL) { + static unsigned anon_count = 1; + identifier = ralloc_asprintf(this, "#anon_struct_%04x", anon_count); + anon_count++; + } + name = identifier; + this->declarations.push_degenerate_list_at_head(&declarator_list->link); +} + +bool +do_common_optimization(exec_list *ir, bool linked, unsigned max_unroll_iterations) +{ + GLboolean progress = GL_FALSE; + + progress = lower_instructions(ir, SUB_TO_ADD_NEG) || progress; + + if (linked) { + progress = do_function_inlining(ir) || progress; + progress = do_dead_functions(ir) || progress; + progress = do_structure_splitting(ir) || progress; + } + progress = do_if_simplification(ir) || progress; + progress = do_discard_simplification(ir) || progress; + progress = do_copy_propagation(ir) || progress; + progress = do_copy_propagation_elements(ir) || progress; + if (linked) + progress = do_dead_code(ir) || progress; + else + progress = do_dead_code_unlinked(ir) || progress; + progress = do_dead_code_local(ir) || progress; + progress = do_tree_grafting(ir) || progress; + progress = do_constant_propagation(ir) || progress; + if (linked) + progress = do_constant_variable(ir) || progress; + else + progress = do_constant_variable_unlinked(ir) || progress; + progress = do_constant_folding(ir) || progress; + progress = do_algebraic(ir) || progress; + progress = do_lower_jumps(ir) || progress; + progress = do_vec_index_to_swizzle(ir) || progress; + progress = do_swizzle_swizzle(ir) || progress; + progress = do_noop_swizzle(ir) || progress; + + progress = optimize_redundant_jumps(ir) || progress; + + loop_state *ls = analyze_loop_variables(ir); + if (ls->loop_found) { + progress = set_loop_controls(ir, ls) || progress; + progress = unroll_loops(ir, ls, max_unroll_iterations) || progress; + } + delete ls; + + return progress; +} + +extern "C" { + +/** + * To be called at GL teardown time, this frees compiler datastructures. + * + * After calling this, any previously compiled shaders and shader + * programs would be invalid. So this should happen at approximately + * program exit. + */ +void +_mesa_destroy_shader_compiler(void) +{ + _mesa_destroy_shader_compiler_caches(); + + _mesa_glsl_release_types(); +} + +/** + * Releases compiler caches to trade off performance for memory. + * + * Intended to be used with glReleaseShaderCompiler(). + */ +void +_mesa_destroy_shader_compiler_caches(void) +{ + _mesa_glsl_release_functions(); +} + +} |