diff options
Diffstat (limited to 'mesalib/src/mesa/shader/slang/slang_simplify.c')
| -rw-r--r-- | mesalib/src/mesa/shader/slang/slang_simplify.c | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/mesalib/src/mesa/shader/slang/slang_simplify.c b/mesalib/src/mesa/shader/slang/slang_simplify.c deleted file mode 100644 index 13b9ca3c8..000000000 --- a/mesalib/src/mesa/shader/slang/slang_simplify.c +++ /dev/null @@ -1,527 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 7.1 - * - * Copyright (C) 2005-2008 Brian Paul 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. - */ - -/** - * Functions for constant folding, built-in constant lookup, and function - * call casting. - */ - - -#include "main/imports.h" -#include "main/macros.h" -#include "main/get.h" -#include "slang_compile.h" -#include "slang_codegen.h" -#include "slang_simplify.h" -#include "slang_print.h" - - -#ifndef GL_MAX_FRAGMENT_UNIFORM_VECTORS -#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD -#endif -#ifndef GL_MAX_VERTEX_UNIFORM_VECTORS -#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB -#endif -#ifndef GL_MAX_VARYING_VECTORS -#define GL_MAX_VARYING_VECTORS 0x8DFC -#endif - - -/** - * Lookup the value of named constant, such as gl_MaxLights. - * \return value of constant, or -1 if unknown - */ -GLint -_slang_lookup_constant(const char *name) -{ - struct constant_info { - const char *Name; - const GLenum Token; - }; - static const struct constant_info info[] = { - { "gl_MaxClipPlanes", GL_MAX_CLIP_PLANES }, - { "gl_MaxCombinedTextureImageUnits", GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS }, - { "gl_MaxDrawBuffers", GL_MAX_DRAW_BUFFERS }, - { "gl_MaxFragmentUniformComponents", GL_MAX_FRAGMENT_UNIFORM_COMPONENTS }, - { "gl_MaxLights", GL_MAX_LIGHTS }, - { "gl_MaxTextureUnits", GL_MAX_TEXTURE_UNITS }, - { "gl_MaxTextureCoords", GL_MAX_TEXTURE_COORDS }, - { "gl_MaxVertexAttribs", GL_MAX_VERTEX_ATTRIBS }, - { "gl_MaxVertexUniformComponents", GL_MAX_VERTEX_UNIFORM_COMPONENTS }, - { "gl_MaxVaryingFloats", GL_MAX_VARYING_FLOATS }, - { "gl_MaxVertexTextureImageUnits", GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS }, - { "gl_MaxTextureImageUnits", GL_MAX_TEXTURE_IMAGE_UNITS }, -#if FEATURE_es2_glsl - { "gl_MaxVertexUniformVectors", GL_MAX_VERTEX_UNIFORM_VECTORS }, - { "gl_MaxVaryingVectors", GL_MAX_VARYING_VECTORS }, - { "gl_MaxFragmentUniformVectors", GL_MAX_FRAGMENT_UNIFORM_VECTORS }, -#endif - { NULL, 0 } - }; - GLuint i; - - for (i = 0; info[i].Name; i++) { - if (strcmp(info[i].Name, name) == 0) { - /* found */ - GLint values[16]; - values[0] = -1; - _mesa_GetIntegerv(info[i].Token, values); - ASSERT(values[0] >= 0); /* sanity check that glGetFloatv worked */ - return values[0]; - } - } - return -1; -} - - -static slang_operation_type -literal_type(slang_operation_type t1, slang_operation_type t2) -{ - if (t1 == SLANG_OPER_LITERAL_FLOAT || t2 == SLANG_OPER_LITERAL_FLOAT) - return SLANG_OPER_LITERAL_FLOAT; - else - return SLANG_OPER_LITERAL_INT; -} - - -/** - * Recursively traverse an AST tree, applying simplifications wherever - * possible. - * At the least, we do constant folding. We need to do that much so that - * compile-time expressions can be evaluated for things like array - * declarations. I.e.: float foo[3 + 5]; - */ -void -_slang_simplify(slang_operation *oper, - const slang_name_space * space, - slang_atom_pool * atoms) -{ - GLboolean isFloat[4]; - GLboolean isBool[4]; - GLuint i, n; - - if (oper->type == SLANG_OPER_IDENTIFIER) { - /* see if it's a named constant */ - GLint value = _slang_lookup_constant((char *) oper->a_id); - /*printf("value[%s] = %d\n", (char*) oper->a_id, value);*/ - if (value >= 0) { - oper->literal[0] = - oper->literal[1] = - oper->literal[2] = - oper->literal[3] = (GLfloat) value; - oper->type = SLANG_OPER_LITERAL_INT; - return; - } - /* look for user-defined constant */ - { - slang_variable *var; - var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE); - if (var) { - if (var->type.qualifier == SLANG_QUAL_CONST && - var->initializer && - (var->initializer->type == SLANG_OPER_LITERAL_INT || - var->initializer->type == SLANG_OPER_LITERAL_FLOAT)) { - oper->literal[0] = var->initializer->literal[0]; - oper->literal[1] = var->initializer->literal[1]; - oper->literal[2] = var->initializer->literal[2]; - oper->literal[3] = var->initializer->literal[3]; - oper->literal_size = var->initializer->literal_size; - oper->type = var->initializer->type; - /* - printf("value[%s] = %f\n", - (char*) oper->a_id, oper->literal[0]); - */ - return; - } - } - } - } - - /* first, simplify children */ - for (i = 0; i < oper->num_children; i++) { - _slang_simplify(&oper->children[i], space, atoms); - } - - /* examine children */ - n = MIN2(oper->num_children, 4); - for (i = 0; i < n; i++) { - isFloat[i] = (oper->children[i].type == SLANG_OPER_LITERAL_FLOAT || - oper->children[i].type == SLANG_OPER_LITERAL_INT); - isBool[i] = (oper->children[i].type == SLANG_OPER_LITERAL_BOOL); - } - - if (oper->num_children == 2 && isFloat[0] && isFloat[1]) { - /* probably simple arithmetic */ - switch (oper->type) { - case SLANG_OPER_ADD: - for (i = 0; i < 4; i++) { - oper->literal[i] - = oper->children[0].literal[i] + oper->children[1].literal[i]; - } - oper->literal_size = oper->children[0].literal_size; - oper->type = literal_type(oper->children[0].type, - oper->children[1].type); - slang_operation_destruct(oper); /* frees unused children */ - return; - case SLANG_OPER_SUBTRACT: - for (i = 0; i < 4; i++) { - oper->literal[i] - = oper->children[0].literal[i] - oper->children[1].literal[i]; - } - oper->literal_size = oper->children[0].literal_size; - oper->type = literal_type(oper->children[0].type, - oper->children[1].type); - slang_operation_destruct(oper); - return; - case SLANG_OPER_MULTIPLY: - for (i = 0; i < 4; i++) { - oper->literal[i] - = oper->children[0].literal[i] * oper->children[1].literal[i]; - } - oper->literal_size = oper->children[0].literal_size; - oper->type = literal_type(oper->children[0].type, - oper->children[1].type); - slang_operation_destruct(oper); - return; - case SLANG_OPER_DIVIDE: - for (i = 0; i < 4; i++) { - oper->literal[i] - = oper->children[0].literal[i] / oper->children[1].literal[i]; - } - oper->literal_size = oper->children[0].literal_size; - oper->type = literal_type(oper->children[0].type, - oper->children[1].type); - slang_operation_destruct(oper); - return; - default: - ; /* nothing */ - } - } - - if (oper->num_children == 1 && isFloat[0]) { - switch (oper->type) { - case SLANG_OPER_MINUS: - for (i = 0; i < 4; i++) { - oper->literal[i] = -oper->children[0].literal[i]; - } - oper->literal_size = oper->children[0].literal_size; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_FLOAT; - return; - case SLANG_OPER_PLUS: - COPY_4V(oper->literal, oper->children[0].literal); - oper->literal_size = oper->children[0].literal_size; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_FLOAT; - return; - default: - ; /* nothing */ - } - } - - if (oper->num_children == 2 && isBool[0] && isBool[1]) { - /* simple boolean expression */ - switch (oper->type) { - case SLANG_OPER_LOGICALAND: - for (i = 0; i < 4; i++) { - const GLint a = oper->children[0].literal[i] ? 1 : 0; - const GLint b = oper->children[1].literal[i] ? 1 : 0; - oper->literal[i] = (GLfloat) (a && b); - } - oper->literal_size = oper->children[0].literal_size; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_BOOL; - return; - case SLANG_OPER_LOGICALOR: - for (i = 0; i < 4; i++) { - const GLint a = oper->children[0].literal[i] ? 1 : 0; - const GLint b = oper->children[1].literal[i] ? 1 : 0; - oper->literal[i] = (GLfloat) (a || b); - } - oper->literal_size = oper->children[0].literal_size; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_BOOL; - return; - case SLANG_OPER_LOGICALXOR: - for (i = 0; i < 4; i++) { - const GLint a = oper->children[0].literal[i] ? 1 : 0; - const GLint b = oper->children[1].literal[i] ? 1 : 0; - oper->literal[i] = (GLfloat) (a ^ b); - } - oper->literal_size = oper->children[0].literal_size; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_BOOL; - return; - default: - ; /* nothing */ - } - } - - if (oper->num_children == 4 - && isFloat[0] && isFloat[1] && isFloat[2] && isFloat[3]) { - /* vec4(flt, flt, flt, flt) constructor */ - if (oper->type == SLANG_OPER_CALL) { - if (strcmp((char *) oper->a_id, "vec4") == 0) { - oper->literal[0] = oper->children[0].literal[0]; - oper->literal[1] = oper->children[1].literal[0]; - oper->literal[2] = oper->children[2].literal[0]; - oper->literal[3] = oper->children[3].literal[0]; - oper->literal_size = 4; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_FLOAT; - return; - } - } - } - - if (oper->num_children == 3 && isFloat[0] && isFloat[1] && isFloat[2]) { - /* vec3(flt, flt, flt) constructor */ - if (oper->type == SLANG_OPER_CALL) { - if (strcmp((char *) oper->a_id, "vec3") == 0) { - oper->literal[0] = oper->children[0].literal[0]; - oper->literal[1] = oper->children[1].literal[0]; - oper->literal[2] = oper->children[2].literal[0]; - oper->literal[3] = oper->literal[2]; - oper->literal_size = 3; - slang_operation_destruct(oper); - oper->type = SLANG_OPER_LITERAL_FLOAT; - return; - } - } - } - - if (oper->num_children == 2 && isFloat[0] && isFloat[1]) { - /* vec2(flt, flt) constructor */ - if (oper->type == SLANG_OPER_CALL) { - if (strcmp((char *) oper->a_id, "vec2") == 0) { - oper->literal[0] = oper->children[0].literal[0]; - oper->literal[1] = oper->children[1].literal[0]; - oper->literal[2] = oper->literal[1]; - oper->literal[3] = oper->literal[1]; - oper->literal_size = 2; - slang_operation_destruct(oper); /* XXX oper->locals goes NULL! */ - oper->type = SLANG_OPER_LITERAL_FLOAT; - assert(oper->num_children == 0); - return; - } - } - } - - if (oper->num_children == 1 && isFloat[0]) { - /* vec2/3/4(flt, flt) constructor */ - if (oper->type == SLANG_OPER_CALL) { - const char *func = (const char *) oper->a_id; - if (strncmp(func, "vec", 3) == 0 && func[3] >= '2' && func[3] <= '4') { - oper->literal[0] = - oper->literal[1] = - oper->literal[2] = - oper->literal[3] = oper->children[0].literal[0]; - oper->literal_size = func[3] - '0'; - assert(oper->literal_size >= 2); - assert(oper->literal_size <= 4); - slang_operation_destruct(oper); /* XXX oper->locals goes NULL! */ - oper->type = SLANG_OPER_LITERAL_FLOAT; - assert(oper->num_children == 0); - return; - } - } - } -} - - - -/** - * Insert casts to try to adapt actual parameters to formal parameters for a - * function call when an exact match for the parameter types is not found. - * Example: - * void foo(int i, bool b) {} - * x = foo(3.15, 9); - * Gets translated into: - * x = foo(int(3.15), bool(9)) - */ -GLboolean -_slang_cast_func_params(slang_operation *callOper, const slang_function *fun, - const slang_name_space * space, - slang_atom_pool * atoms, slang_info_log *log) -{ - const GLboolean haveRetValue = _slang_function_has_return_value(fun); - const int numParams = fun->param_count - haveRetValue; - int i; - int dbg = 0; - - if (dbg) - printf("Adapt call of %d args to func %s (%d params)\n", - callOper->num_children, (char*) fun->header.a_name, numParams); - - for (i = 0; i < numParams; i++) { - slang_typeinfo argType; - slang_variable *paramVar = fun->parameters->variables[i]; - - /* Get type of arg[i] */ - if (!slang_typeinfo_construct(&argType)) - return GL_FALSE; - if (!_slang_typeof_operation(&callOper->children[i], space, - &argType, atoms, log)) { - slang_typeinfo_destruct(&argType); - return GL_FALSE; - } - - /* see if arg type matches parameter type */ - if (!slang_type_specifier_equal(&argType.spec, - ¶mVar->type.specifier)) { - /* need to adapt arg type to match param type */ - const char *constructorName = - slang_type_specifier_type_to_string(paramVar->type.specifier.type); - slang_operation *child = slang_operation_new(1); - - if (dbg) - printf("Need to adapt types of arg %d\n", i); - - slang_operation_copy(child, &callOper->children[i]); - child->locals->outer_scope = callOper->children[i].locals; - -#if 0 - if (_slang_sizeof_type_specifier(&argType.spec) > - _slang_sizeof_type_specifier(¶mVar->type.specifier)) { - } -#endif - - callOper->children[i].type = SLANG_OPER_CALL; - callOper->children[i].a_id = slang_atom_pool_atom(atoms, constructorName); - callOper->children[i].num_children = 1; - callOper->children[i].children = child; - } - - slang_typeinfo_destruct(&argType); - } - - if (dbg) { - printf("===== New call to %s with cast arguments ===============\n", - (char*) fun->header.a_name); - slang_print_tree(callOper, 5); - } - - return GL_TRUE; -} - - -/** - * Adapt the arguments for a function call to match the parameters of - * the given function. - * This is for: - * 1. converting/casting argument types to match parameters - * 2. breaking up vector/matrix types into individual components to - * satisfy constructors. - */ -GLboolean -_slang_adapt_call(slang_operation *callOper, const slang_function *fun, - const slang_name_space * space, - slang_atom_pool * atoms, slang_info_log *log) -{ - const GLboolean haveRetValue = _slang_function_has_return_value(fun); - const int numParams = fun->param_count - haveRetValue; - int i; - int dbg = 0; - - if (dbg) - printf("Adapt %d args to %d parameters for %s\n", - callOper->num_children, numParams, (char *) fun->header.a_name); - - /* Only try adapting for constructors */ - if (fun->kind != SLANG_FUNC_CONSTRUCTOR) - return GL_FALSE; - - if (callOper->num_children != numParams) { - /* number of arguments doesn't match number of parameters */ - - /* For constructor calls, we can try to unroll vector/matrix args - * into individual floats/ints and try to match the function params. - */ - for (i = 0; i < numParams; i++) { - slang_typeinfo argType; - GLint argSz, j; - - /* Get type of arg[i] */ - if (!slang_typeinfo_construct(&argType)) - return GL_FALSE; - if (!_slang_typeof_operation(&callOper->children[i], space, - &argType, atoms, log)) { - slang_typeinfo_destruct(&argType); - return GL_FALSE; - } - - /* - paramSz = _slang_sizeof_type_specifier(¶mVar->type.specifier); - assert(paramSz == 1); - */ - argSz = _slang_sizeof_type_specifier(&argType.spec); - if (argSz > 1) { - slang_operation origArg; - /* break up arg[i] into components */ - if (dbg) - printf("Break up arg %d from 1 to %d elements\n", i, argSz); - - slang_operation_construct(&origArg); - slang_operation_copy(&origArg, &callOper->children[i]); - - /* insert argSz-1 new children/args */ - for (j = 0; j < argSz - 1; j++) { - (void) slang_operation_insert(&callOper->num_children, - &callOper->children, i); - } - - /* replace arg[i+j] with subscript/index oper */ - for (j = 0; j < argSz; j++) { - callOper->children[i + j].type = SLANG_OPER_SUBSCRIPT; - callOper->children[i + j].locals = _slang_variable_scope_new(callOper->locals); - callOper->children[i + j].num_children = 2; - callOper->children[i + j].children = slang_operation_new(2); - slang_operation_copy(&callOper->children[i + j].children[0], - &origArg); - callOper->children[i + j].children[1].type - = SLANG_OPER_LITERAL_INT; - callOper->children[i + j].children[1].literal[0] = (GLfloat) j; - } - } - } - } - - if (callOper->num_children < (GLuint) numParams) { - /* still not enough args for all params */ - return GL_FALSE; - } - else if (callOper->num_children > (GLuint) numParams) { - /* now too many arguments */ - /* just truncate */ - callOper->num_children = (GLuint) numParams; - } - - if (dbg) { - printf("===== New call to %s with adapted arguments ===============\n", - (char*) fun->header.a_name); - slang_print_tree(callOper, 5); - } - - return GL_TRUE; -} |