2010-02-22 21:19:34 +00:00
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/*
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* Copyright © 2009 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <stdlib.h>
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2010-03-19 18:57:24 +00:00
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#include "glsl_symbol_table.h"
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2010-02-22 21:19:34 +00:00
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#include "glsl_parser_extras.h"
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#include "glsl_types.h"
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#include "builtin_types.h"
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static void
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2010-03-19 18:57:24 +00:00
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add_types_to_symbol_table(glsl_symbol_table *symtab,
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2010-02-22 21:19:34 +00:00
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const struct glsl_type *types,
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unsigned num_types)
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{
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unsigned i;
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for (i = 0; i < num_types; i++) {
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2010-03-19 18:57:24 +00:00
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symtab->add_type(types[i].name, & types[i]);
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2010-02-22 21:19:34 +00:00
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}
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}
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static void
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2010-03-19 18:57:24 +00:00
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generate_110_types(glsl_symbol_table *symtab)
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2010-02-22 21:19:34 +00:00
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{
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add_types_to_symbol_table(symtab, builtin_core_types,
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Elements(builtin_core_types));
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add_types_to_symbol_table(symtab, builtin_structure_types,
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Elements(builtin_structure_types));
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add_types_to_symbol_table(symtab, builtin_110_deprecated_structure_types,
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Elements(builtin_110_deprecated_structure_types));
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2010-03-23 19:11:50 +00:00
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add_types_to_symbol_table(symtab, & void_type, 1);
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2010-02-22 21:19:34 +00:00
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}
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static void
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2010-03-19 18:57:24 +00:00
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generate_120_types(glsl_symbol_table *symtab)
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2010-02-22 21:19:34 +00:00
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{
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generate_110_types(symtab);
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add_types_to_symbol_table(symtab, builtin_120_types,
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Elements(builtin_120_types));
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}
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static void
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2010-03-19 18:57:24 +00:00
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generate_130_types(glsl_symbol_table *symtab)
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2010-02-22 21:19:34 +00:00
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{
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generate_120_types(symtab);
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add_types_to_symbol_table(symtab, builtin_130_types,
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Elements(builtin_130_types));
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}
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void
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_mesa_glsl_initialize_types(struct _mesa_glsl_parse_state *state)
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{
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switch (state->language_version) {
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case 110:
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generate_110_types(state->symbols);
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break;
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case 120:
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generate_120_types(state->symbols);
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break;
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case 130:
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generate_130_types(state->symbols);
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break;
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default:
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/* error */
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break;
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}
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}
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2010-03-24 00:31:39 +00:00
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const glsl_type *glsl_type::get_base_type() const
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{
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switch (base_type) {
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case GLSL_TYPE_UINT:
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return glsl_uint_type;
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case GLSL_TYPE_INT:
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return glsl_int_type;
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case GLSL_TYPE_FLOAT:
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return glsl_float_type;
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case GLSL_TYPE_BOOL:
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return glsl_bool_type;
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default:
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return glsl_error_type;
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}
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}
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2010-03-25 00:11:30 +00:00
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2010-03-25 23:58:45 +00:00
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/**
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* Generate the function intro for a constructor
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*
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* \param type Data type to be constructed
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* \param count Number of parameters to this concrete constructor. Most
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* types have at least two constructors. One will take a
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* single scalar parameter and the other will take "N"
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* scalar parameters.
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* \param parameters Storage for the list of parameters. These are
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* typically stored in an \c ir_function_signature.
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* \param instructions Storage for the preamble and body of the function.
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* \param declarations Pointers to the variable declarations for the function
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* parameters. These are used later to avoid having to use
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* the symbol table.
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*/
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static void
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generate_constructor_intro(const glsl_type *type, unsigned parameter_count,
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exec_list *parameters, exec_list *instructions,
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ir_variable **declarations)
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{
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/* Names of parameters used in vector and matrix constructors
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*/
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static const char *const names[] = {
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"a", "b", "c", "d", "e", "f", "g", "h",
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"i", "j", "k", "l", "m", "n", "o", "p",
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};
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assert(parameter_count <= Elements(names));
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const glsl_type *const parameter_type = type->get_base_type();
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ir_label *const label = new ir_label(type->name);
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instructions->push_tail(label);
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for (unsigned i = 0; i < parameter_count; i++) {
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ir_variable *var = new ir_variable(parameter_type, names[i]);
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var->mode = ir_var_in;
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parameters->push_tail(var);
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var = new ir_variable(parameter_type, names[i]);
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var->mode = ir_var_in;
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instructions->push_tail(var);
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declarations[i] = var;
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}
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ir_variable *retval = new ir_variable(type, "__retval");
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instructions->push_tail(retval);
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declarations[16] = retval;
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}
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/**
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* Generate the body of a vector constructor that takes a single scalar
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*/
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static void
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generate_vec_body_from_scalar(exec_list *instructions,
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ir_variable **declarations)
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{
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ir_instruction *inst;
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/* Generate a single assignment of the parameter to __retval.x and return
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* __retval.xxxx for however many vector components there are.
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*/
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ir_dereference *const lhs = new ir_dereference(declarations[16]);
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ir_dereference *const rhs = new ir_dereference(declarations[0]);
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lhs->set_swizzle(0, 0, 0, 0, 1);
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inst = new ir_assignment(lhs, rhs, NULL);
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instructions->push_tail(inst);
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ir_dereference *const retval = new ir_dereference(declarations[16]);
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retval->set_swizzle(0, 0, 0, 0, declarations[16]->type->vector_elements);
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2010-03-26 07:25:36 +00:00
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inst = new ir_return(retval);
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2010-03-25 23:58:45 +00:00
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instructions->push_tail(inst);
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}
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/**
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* Generate the body of a vector constructor that takes multiple scalars
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*/
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static void
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generate_vec_body_from_N_scalars(exec_list *instructions,
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ir_variable **declarations)
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{
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ir_instruction *inst;
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const glsl_type *const vec_type = declarations[16]->type;
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/* Generate an assignment of each parameter to a single component of
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* __retval.x and return __retval.
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*/
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for (unsigned i = 0; i < vec_type->vector_elements; i++) {
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ir_dereference *const lhs = new ir_dereference(declarations[16]);
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ir_dereference *const rhs = new ir_dereference(declarations[i]);
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lhs->selector.swizzle.x = i;
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lhs->selector.swizzle.num_components = 1;
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inst = new ir_assignment(lhs, rhs, NULL);
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instructions->push_tail(inst);
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}
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ir_dereference *retval = new ir_dereference(declarations[16]);
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2010-03-26 07:25:36 +00:00
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inst = new ir_return(retval);
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2010-03-25 23:58:45 +00:00
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instructions->push_tail(inst);
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}
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/**
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* Generate the body of a matrix constructor that takes a single scalar
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*/
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static void
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generate_mat_body_from_scalar(exec_list *instructions,
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ir_variable **declarations)
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{
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ir_instruction *inst;
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/* Generate an assignment of the parameter to the X component of a
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* temporary vector. Set the remaining fields of the vector to 0. The
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* size of the vector is equal to the number of rows of the matrix.
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*
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* Set each column of the matrix to a successive "rotation" of the
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* temporary vector. This fills the matrix with 0s, but writes the single
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* scalar along the matrix's diagonal.
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*
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* For a mat4x3, this is equivalent to:
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*
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* vec3 tmp;
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* mat4x3 __retval;
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* tmp.x = a;
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* tmp.y = 0.0;
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* tmp.z = 0.0;
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* __retval[0] = tmp.xyy;
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* __retval[1] = tmp.yxy;
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* __retval[2] = tmp.yyx;
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* __retval[3] = tmp.yyy;
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*/
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const glsl_type *const column_type = declarations[16]->type->column_type();
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const glsl_type *const row_type = declarations[16]->type->row_type();
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ir_variable *const column = new ir_variable(column_type, "v");
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instructions->push_tail(column);
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ir_dereference *const lhs = new ir_dereference(column);
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ir_dereference *const rhs = new ir_dereference(declarations[0]);
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lhs->set_swizzle(0, 0, 0, 0, 1);
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inst = new ir_assignment(lhs, rhs, NULL);
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instructions->push_tail(inst);
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const float z = 0.0f;
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ir_constant *const zero = new ir_constant(glsl_float_type, &z);
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for (unsigned i = 1; i < column_type->vector_elements; i++) {
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ir_dereference *const lhs = new ir_dereference(column);
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lhs->set_swizzle(i, 0, 0, 0, 1);
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inst = new ir_assignment(lhs, zero, NULL);
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instructions->push_tail(inst);
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}
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for (unsigned i = 0; i < row_type->vector_elements; i++) {
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static const unsigned swiz[] = { 1, 1, 1, 0, 1, 1, 1 };
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ir_dereference *const rhs = new ir_dereference(column);
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/* This will be .xyyy when i=0, .yxyy when i=1, etc.
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*/
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rhs->set_swizzle(swiz[3 - i], swiz[4 - i], swiz[5 - i], swiz[6 - i],
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column_type->vector_elements);
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ir_constant *const idx = new ir_constant(glsl_int_type, &i);
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ir_dereference *const lhs = new ir_dereference(declarations[16], idx);
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inst = new ir_assignment(lhs, rhs, NULL);
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instructions->push_tail(inst);
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}
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ir_dereference *const retval = new ir_dereference(declarations[16]);
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2010-03-26 07:25:36 +00:00
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inst = new ir_return(retval);
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2010-03-25 23:58:45 +00:00
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instructions->push_tail(inst);
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}
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/**
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* Generate the body of a vector constructor that takes multiple scalars
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*/
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static void
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generate_mat_body_from_N_scalars(exec_list *instructions,
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ir_variable **declarations)
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{
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ir_instruction *inst;
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const glsl_type *const row_type = declarations[16]->type->row_type();
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const glsl_type *const column_type = declarations[16]->type->column_type();
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/* Generate an assignment of each parameter to a single component of
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* of a particular column of __retval and return __retval.
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*/
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for (unsigned i = 0; i < column_type->vector_elements; i++) {
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for (unsigned j = 0; j < row_type->vector_elements; j++) {
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ir_constant *row_index = new ir_constant(glsl_int_type, &i);
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ir_dereference *const row_access =
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new ir_dereference(declarations[16], row_index);
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ir_dereference *const component_access =
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new ir_dereference(row_access);
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component_access->selector.swizzle.x = j;
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component_access->selector.swizzle.num_components = 1;
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const unsigned param = (i * row_type->vector_elements) + j;
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ir_dereference *const rhs = new ir_dereference(declarations[param]);
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inst = new ir_assignment(component_access, rhs, NULL);
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instructions->push_tail(inst);
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}
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}
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ir_dereference *retval = new ir_dereference(declarations[16]);
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|
2010-03-26 07:25:36 +00:00
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inst = new ir_return(retval);
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2010-03-25 23:58:45 +00:00
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instructions->push_tail(inst);
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}
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/**
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* Generate the constructors for a set of GLSL types
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*
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* Constructor implementations are added to \c instructions, and the symbols
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* are added to \c symtab.
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*/
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static void
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generate_constructor(glsl_symbol_table *symtab, const struct glsl_type *types,
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unsigned num_types, exec_list *instructions)
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{
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|
|
ir_variable *declarations[17];
|
|
|
|
|
|
|
|
for (unsigned i = 0; i < num_types; i++) {
|
|
|
|
/* Only numeric and boolean vectors and matrices get constructors here.
|
|
|
|
* Structures need to be handled elsewhere. It is expected that scalar
|
|
|
|
* constructors are never actually called, so they are not generated.
|
|
|
|
*/
|
|
|
|
if (!types[i].is_numeric() && !types[i].is_boolean())
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (types[i].is_scalar())
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Generate the function name and add it to the symbol table.
|
|
|
|
*/
|
|
|
|
ir_function *const f = new ir_function(types[i].name);
|
|
|
|
|
|
|
|
bool added = symtab->add_function(types[i].name, f);
|
|
|
|
assert(added);
|
|
|
|
|
|
|
|
|
|
|
|
/* Each type has several basic constructors. The total number of forms
|
|
|
|
* depends on the derived type.
|
|
|
|
*
|
|
|
|
* Vectors: 1 scalar, N scalars
|
|
|
|
* Matrices: 1 scalar, NxM scalars
|
|
|
|
*
|
|
|
|
* Several possible types of constructors are not included in this list.
|
|
|
|
*
|
|
|
|
* Scalar constructors are not included. The expectation is that the
|
|
|
|
* IR generator won't actually generate these as constructor calls. The
|
|
|
|
* expectation is that it will just generate the necessary type
|
|
|
|
* conversion.
|
|
|
|
*
|
|
|
|
* Matrix contructors from matrices are also not included. The
|
|
|
|
* expectation is that the IR generator will generate a call to the
|
|
|
|
* appropriate from-scalars constructor.
|
|
|
|
*/
|
|
|
|
ir_function_signature *const sig = new ir_function_signature(& types[i]);
|
|
|
|
f->signatures.push_tail(sig);
|
|
|
|
|
|
|
|
generate_constructor_intro(& types[i], 1, & sig->parameters,
|
|
|
|
instructions, declarations);
|
|
|
|
|
|
|
|
if (types[i].is_vector()) {
|
|
|
|
generate_vec_body_from_scalar(instructions, declarations);
|
|
|
|
|
|
|
|
ir_function_signature *const vec_sig =
|
|
|
|
new ir_function_signature(& types[i]);
|
|
|
|
f->signatures.push_tail(vec_sig);
|
|
|
|
|
|
|
|
generate_constructor_intro(& types[i], types[i].vector_elements,
|
|
|
|
& vec_sig->parameters, instructions,
|
|
|
|
declarations);
|
|
|
|
generate_vec_body_from_N_scalars(instructions, declarations);
|
|
|
|
} else {
|
|
|
|
assert(types[i].is_matrix());
|
|
|
|
|
|
|
|
generate_mat_body_from_scalar(instructions, declarations);
|
|
|
|
|
|
|
|
ir_function_signature *const mat_sig =
|
|
|
|
new ir_function_signature(& types[i]);
|
|
|
|
f->signatures.push_tail(mat_sig);
|
|
|
|
|
|
|
|
generate_constructor_intro(& types[i],
|
|
|
|
(types[i].vector_elements
|
|
|
|
* types[i].matrix_columns),
|
|
|
|
& mat_sig->parameters, instructions,
|
|
|
|
declarations);
|
|
|
|
generate_mat_body_from_N_scalars(instructions, declarations);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
generate_110_constructors(glsl_symbol_table *symtab, exec_list *instructions)
|
|
|
|
{
|
|
|
|
generate_constructor(symtab, builtin_core_types,
|
|
|
|
Elements(builtin_core_types), instructions);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
generate_120_constructors(glsl_symbol_table *symtab, exec_list *instructions)
|
|
|
|
{
|
|
|
|
generate_110_constructors(symtab, instructions);
|
|
|
|
|
|
|
|
generate_constructor(symtab, builtin_120_types,
|
|
|
|
Elements(builtin_120_types), instructions);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
generate_130_constructors(glsl_symbol_table *symtab, exec_list *instructions)
|
|
|
|
{
|
|
|
|
generate_120_constructors(symtab, instructions);
|
|
|
|
|
|
|
|
generate_constructor(symtab, builtin_130_types,
|
|
|
|
Elements(builtin_130_types), instructions);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
_mesa_glsl_initialize_constructors(exec_list *instructions,
|
|
|
|
struct _mesa_glsl_parse_state *state)
|
|
|
|
{
|
|
|
|
switch (state->language_version) {
|
|
|
|
case 110:
|
|
|
|
generate_110_constructors(state->symbols, instructions);
|
|
|
|
break;
|
|
|
|
case 120:
|
|
|
|
generate_120_constructors(state->symbols, instructions);
|
|
|
|
break;
|
|
|
|
case 130:
|
|
|
|
generate_130_constructors(state->symbols, instructions);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
/* error */
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2010-03-25 00:11:30 +00:00
|
|
|
const glsl_type *
|
|
|
|
glsl_type::get_instance(unsigned base_type, unsigned rows, unsigned columns)
|
|
|
|
{
|
|
|
|
if ((rows < 1) || (rows > 4) || (columns < 1) || (columns > 4))
|
|
|
|
return glsl_error_type;
|
|
|
|
|
|
|
|
|
|
|
|
/* Treat GLSL vectors as Nx1 matrices.
|
|
|
|
*/
|
|
|
|
if (columns == 1) {
|
|
|
|
switch (base_type) {
|
|
|
|
case GLSL_TYPE_UINT:
|
|
|
|
return glsl_uint_type + (rows - 1);
|
|
|
|
case GLSL_TYPE_INT:
|
|
|
|
return glsl_int_type + (rows - 1);
|
|
|
|
case GLSL_TYPE_FLOAT:
|
|
|
|
return glsl_float_type + (rows - 1);
|
|
|
|
case GLSL_TYPE_BOOL:
|
|
|
|
return glsl_bool_type + (rows - 1);
|
|
|
|
default:
|
|
|
|
return glsl_error_type;
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
if ((base_type != GLSL_TYPE_FLOAT) || (rows == 1))
|
|
|
|
return glsl_error_type;
|
|
|
|
|
|
|
|
/* GLSL matrix types are named mat{COLUMNS}x{ROWS}. Only the following
|
|
|
|
* combinations are valid:
|
|
|
|
*
|
|
|
|
* 1 2 3 4
|
|
|
|
* 1
|
|
|
|
* 2 x x x
|
|
|
|
* 3 x x x
|
|
|
|
* 4 x x x
|
|
|
|
*/
|
|
|
|
#define IDX(c,r) (((c-1)*3) + (r-1))
|
|
|
|
|
|
|
|
switch (IDX(columns, rows)) {
|
|
|
|
case IDX(2,2): return mat2_type;
|
|
|
|
case IDX(2,3): return mat2x3_type;
|
|
|
|
case IDX(2,4): return mat2x4_type;
|
|
|
|
case IDX(3,2): return mat3x2_type;
|
|
|
|
case IDX(3,3): return mat3_type;
|
|
|
|
case IDX(3,4): return mat3x4_type;
|
|
|
|
case IDX(4,2): return mat4x2_type;
|
|
|
|
case IDX(4,3): return mat4x3_type;
|
|
|
|
case IDX(4,4): return mat4_type;
|
|
|
|
default: return glsl_error_type;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
assert(!"Should not get here.");
|
|
|
|
return glsl_error_type;
|
|
|
|
}
|