2 * Copyright © 2008, 2009 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
30 #include "main/core.h" /* for struct __GLcontextRec */
34 #include "glsl_parser_extras.h"
35 #include "glsl_parser.h"
36 #include "ir_optimization.h"
37 #include "loop_analysis.h"
39 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct __GLcontextRec
*ctx
,
40 GLenum target
, void *mem_ctx
)
43 case GL_VERTEX_SHADER
: this->target
= vertex_shader
; break;
44 case GL_FRAGMENT_SHADER
: this->target
= fragment_shader
; break;
45 case GL_GEOMETRY_SHADER
: this->target
= geometry_shader
; break;
49 this->translation_unit
.make_empty();
50 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
51 this->info_log
= talloc_strdup(mem_ctx
, "");
53 this->loop_or_switch_nesting
= NULL
;
55 /* Set default language version and extensions */
56 this->language_version
= 110;
57 this->es_shader
= false;
58 this->ARB_texture_rectangle_enable
= true;
60 /* OpenGL ES 2.0 has different defaults from desktop GL. */
61 if (ctx
->API
== API_OPENGLES2
) {
62 this->language_version
= 100;
63 this->es_shader
= true;
64 this->ARB_texture_rectangle_enable
= false;
67 this->extensions
= &ctx
->Extensions
;
69 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
70 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
71 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
72 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
73 this->Const
.MaxVertexAttribs
= ctx
->Const
.VertexProgram
.MaxAttribs
;
74 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.VertexProgram
.MaxUniformComponents
;
75 this->Const
.MaxVaryingFloats
= ctx
->Const
.MaxVarying
* 4;
76 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.MaxVertexTextureImageUnits
;
77 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
78 this->Const
.MaxTextureImageUnits
= ctx
->Const
.MaxTextureImageUnits
;
79 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.FragmentProgram
.MaxUniformComponents
;
81 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
85 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
)
88 case vertex_shader
: return "vertex";
89 case fragment_shader
: return "fragment";
90 case geometry_shader
: return "geometry";
91 case ir_shader
: break;
94 assert(!"Should not get here.");
100 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
101 const char *fmt
, ...)
107 assert(state
->info_log
!= NULL
);
108 state
->info_log
= talloc_asprintf_append(state
->info_log
,
109 "%u:%u(%u): error: ",
114 state
->info_log
= talloc_vasprintf_append(state
->info_log
, fmt
, ap
);
116 state
->info_log
= talloc_strdup_append(state
->info_log
, "\n");
121 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
122 const char *fmt
, ...)
126 assert(state
->info_log
!= NULL
);
127 state
->info_log
= talloc_asprintf_append(state
->info_log
,
128 "%u:%u(%u): warning: ",
133 state
->info_log
= talloc_vasprintf_append(state
->info_log
, fmt
, ap
);
135 state
->info_log
= talloc_strdup_append(state
->info_log
, "\n");
140 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
141 const char *behavior
, YYLTYPE
*behavior_locp
,
142 _mesa_glsl_parse_state
*state
)
151 if (strcmp(behavior
, "warn") == 0) {
152 ext_mode
= extension_warn
;
153 } else if (strcmp(behavior
, "require") == 0) {
154 ext_mode
= extension_require
;
155 } else if (strcmp(behavior
, "enable") == 0) {
156 ext_mode
= extension_enable
;
157 } else if (strcmp(behavior
, "disable") == 0) {
158 ext_mode
= extension_disable
;
160 _mesa_glsl_error(behavior_locp
, state
,
161 "Unknown extension behavior `%s'",
166 bool unsupported
= false;
168 if (strcmp(name
, "all") == 0) {
169 if ((ext_mode
== extension_enable
) || (ext_mode
== extension_require
)) {
170 _mesa_glsl_error(name_locp
, state
, "Cannot %s all extensions",
171 (ext_mode
== extension_enable
)
172 ? "enable" : "require");
175 } else if (strcmp(name
, "GL_ARB_draw_buffers") == 0) {
176 /* This extension is only supported in fragment shaders.
178 if (state
->target
!= fragment_shader
) {
181 state
->ARB_draw_buffers_enable
= (ext_mode
!= extension_disable
);
182 state
->ARB_draw_buffers_warn
= (ext_mode
== extension_warn
);
184 } else if (strcmp(name
, "GL_ARB_fragment_coord_conventions") == 0) {
185 state
->ARB_fragment_coord_conventions_enable
=
186 (ext_mode
!= extension_disable
);
187 state
->ARB_fragment_coord_conventions_warn
=
188 (ext_mode
== extension_warn
);
190 unsupported
= !state
->extensions
->ARB_fragment_coord_conventions
;
191 } else if (strcmp(name
, "GL_ARB_texture_rectangle") == 0) {
192 state
->ARB_texture_rectangle_enable
= (ext_mode
!= extension_disable
);
193 state
->ARB_texture_rectangle_warn
= (ext_mode
== extension_warn
);
194 } else if (strcmp(name
, "GL_EXT_texture_array") == 0) {
195 state
->EXT_texture_array_enable
= (ext_mode
!= extension_disable
);
196 state
->EXT_texture_array_warn
= (ext_mode
== extension_warn
);
198 unsupported
= !state
->extensions
->EXT_texture_array
;
204 static const char *const fmt
= "extension `%s' unsupported in %s shader";
206 if (ext_mode
== extension_require
) {
207 _mesa_glsl_error(name_locp
, state
, fmt
,
208 name
, _mesa_glsl_shader_target_name(state
->target
));
211 _mesa_glsl_warning(name_locp
, state
, fmt
,
212 name
, _mesa_glsl_shader_target_name(state
->target
));
220 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
226 printf("invariant ");
229 printf("attribute ");
252 if (q
->noperspective
)
253 printf("noperspective ");
258 ast_node::print(void) const
260 printf("unhandled node ");
264 ast_node::ast_node(void)
266 this->location
.source
= 0;
267 this->location
.line
= 0;
268 this->location
.column
= 0;
273 ast_opt_array_size_print(bool is_array
, const ast_expression
*array_size
)
287 ast_compound_statement::print(void) const
291 foreach_list_const(n
, &this->statements
) {
292 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
300 ast_compound_statement::ast_compound_statement(int new_scope
,
301 ast_node
*statements
)
303 this->new_scope
= new_scope
;
305 if (statements
!= NULL
) {
306 this->statements
.push_degenerate_list_at_head(&statements
->link
);
312 ast_expression::print(void) const
326 subexpressions
[0]->print();
327 printf("%s ", operator_string(oper
));
328 subexpressions
[1]->print();
331 case ast_field_selection
:
332 subexpressions
[0]->print();
333 printf(". %s ", primary_expression
.identifier
);
342 printf("%s ", operator_string(oper
));
343 subexpressions
[0]->print();
348 subexpressions
[0]->print();
349 printf("%s ", operator_string(oper
));
352 case ast_conditional
:
353 subexpressions
[0]->print();
355 subexpressions
[1]->print();
357 subexpressions
[1]->print();
360 case ast_array_index
:
361 subexpressions
[0]->print();
363 subexpressions
[1]->print();
367 case ast_function_call
: {
368 subexpressions
[0]->print();
371 foreach_list_const (n
, &this->expressions
) {
372 if (n
!= this->expressions
.get_head())
375 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
384 printf("%s ", primary_expression
.identifier
);
387 case ast_int_constant
:
388 printf("%d ", primary_expression
.int_constant
);
391 case ast_uint_constant
:
392 printf("%u ", primary_expression
.uint_constant
);
395 case ast_float_constant
:
396 printf("%f ", primary_expression
.float_constant
);
399 case ast_bool_constant
:
401 primary_expression
.bool_constant
407 foreach_list_const(n
, & this->expressions
) {
408 if (n
!= this->expressions
.get_head())
411 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
424 ast_expression::ast_expression(int oper
,
429 this->oper
= ast_operators(oper
);
430 this->subexpressions
[0] = ex0
;
431 this->subexpressions
[1] = ex1
;
432 this->subexpressions
[2] = ex2
;
437 ast_expression_statement::print(void) const
446 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
454 ast_function::print(void) const
456 return_type
->print();
457 printf(" %s (", identifier
);
459 foreach_list_const(n
, & this->parameters
) {
460 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
468 ast_function::ast_function(void)
469 : is_definition(false), signature(NULL
)
476 ast_fully_specified_type::print(void) const
478 _mesa_ast_type_qualifier_print(& qualifier
);
484 ast_parameter_declarator::print(void) const
488 printf("%s ", identifier
);
489 ast_opt_array_size_print(is_array
, array_size
);
494 ast_function_definition::print(void) const
502 ast_declaration::print(void) const
504 printf("%s ", identifier
);
505 ast_opt_array_size_print(is_array
, array_size
);
509 initializer
->print();
514 ast_declaration::ast_declaration(char *identifier
, int is_array
,
515 ast_expression
*array_size
,
516 ast_expression
*initializer
)
518 this->identifier
= identifier
;
519 this->is_array
= is_array
;
520 this->array_size
= array_size
;
521 this->initializer
= initializer
;
526 ast_declarator_list::print(void) const
528 assert(type
|| invariant
);
533 printf("invariant ");
535 foreach_list_const (ptr
, & this->declarations
) {
536 if (ptr
!= this->declarations
.get_head())
539 ast_node
*ast
= exec_node_data(ast_node
, ptr
, link
);
547 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
550 this->invariant
= false;
554 ast_jump_statement::print(void) const
558 printf("continue; ");
565 if (opt_return_value
)
566 opt_return_value
->print();
577 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
579 this->mode
= ast_jump_modes(mode
);
581 if (mode
== ast_return
)
582 opt_return_value
= return_value
;
587 ast_selection_statement::print(void) const
593 then_statement
->print();
595 if (else_statement
) {
597 else_statement
->print();
603 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
604 ast_node
*then_statement
,
605 ast_node
*else_statement
)
607 this->condition
= condition
;
608 this->then_statement
= then_statement
;
609 this->else_statement
= else_statement
;
614 ast_iteration_statement::print(void) const
620 init_statement
->print();
628 rest_expression
->print();
654 ast_iteration_statement::ast_iteration_statement(int mode
,
657 ast_expression
*rest_expression
,
660 this->mode
= ast_iteration_modes(mode
);
661 this->init_statement
= init
;
662 this->condition
= condition
;
663 this->rest_expression
= rest_expression
;
669 ast_struct_specifier::print(void) const
671 printf("struct %s { ", name
);
672 foreach_list_const(n
, &this->declarations
) {
673 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
680 ast_struct_specifier::ast_struct_specifier(char *identifier
,
681 ast_node
*declarator_list
)
683 if (identifier
== NULL
) {
684 static unsigned anon_count
= 1;
685 identifier
= talloc_asprintf(this, "#anon_struct_%04x", anon_count
);
689 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
693 do_common_optimization(exec_list
*ir
, bool linked
, unsigned max_unroll_iterations
)
695 GLboolean progress
= GL_FALSE
;
697 progress
= do_sub_to_add_neg(ir
) || progress
;
700 progress
= do_function_inlining(ir
) || progress
;
701 progress
= do_dead_functions(ir
) || progress
;
703 progress
= do_structure_splitting(ir
) || progress
;
704 progress
= do_if_simplification(ir
) || progress
;
705 progress
= do_copy_propagation(ir
) || progress
;
707 progress
= do_dead_code(ir
) || progress
;
709 progress
= do_dead_code_unlinked(ir
) || progress
;
710 progress
= do_dead_code_local(ir
) || progress
;
711 progress
= do_tree_grafting(ir
) || progress
;
712 progress
= do_constant_propagation(ir
) || progress
;
714 progress
= do_constant_variable(ir
) || progress
;
716 progress
= do_constant_variable_unlinked(ir
) || progress
;
717 progress
= do_constant_folding(ir
) || progress
;
718 progress
= do_algebraic(ir
) || progress
;
719 progress
= do_lower_jumps(ir
) || progress
;
720 progress
= do_vec_index_to_swizzle(ir
) || progress
;
721 progress
= do_swizzle_swizzle(ir
) || progress
;
722 progress
= do_noop_swizzle(ir
) || progress
;
724 progress
= optimize_redundant_jumps(ir
) || progress
;
726 loop_state
*ls
= analyze_loop_variables(ir
);
727 progress
= set_loop_controls(ir
, ls
) || progress
;
728 progress
= unroll_loops(ir
, ls
, max_unroll_iterations
) || progress
;
737 * To be called at GL teardown time, this frees compiler datastructures.
739 * After calling this, any previously compiled shaders and shader
740 * programs would be invalid. So this should happen at approximately
744 _mesa_destroy_shader_compiler(void)
746 _mesa_destroy_shader_compiler_caches();
748 _mesa_glsl_release_types();
752 * Releases compiler caches to trade off performance for memory.
754 * Intended to be used with glReleaseShaderCompiler().
757 _mesa_destroy_shader_compiler_caches(void)
759 _mesa_glsl_release_functions();