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 gl_context */
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 gl_context
*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";
93 assert(!"Should not get here.");
99 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
100 const char *fmt
, ...)
106 assert(state
->info_log
!= NULL
);
107 state
->info_log
= talloc_asprintf_append(state
->info_log
,
108 "%u:%u(%u): error: ",
113 state
->info_log
= talloc_vasprintf_append(state
->info_log
, fmt
, ap
);
115 state
->info_log
= talloc_strdup_append(state
->info_log
, "\n");
120 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
121 const char *fmt
, ...)
125 assert(state
->info_log
!= NULL
);
126 state
->info_log
= talloc_asprintf_append(state
->info_log
,
127 "%u:%u(%u): warning: ",
132 state
->info_log
= talloc_vasprintf_append(state
->info_log
, fmt
, ap
);
134 state
->info_log
= talloc_strdup_append(state
->info_log
, "\n");
139 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
140 const char *behavior
, YYLTYPE
*behavior_locp
,
141 _mesa_glsl_parse_state
*state
)
150 if (strcmp(behavior
, "warn") == 0) {
151 ext_mode
= extension_warn
;
152 } else if (strcmp(behavior
, "require") == 0) {
153 ext_mode
= extension_require
;
154 } else if (strcmp(behavior
, "enable") == 0) {
155 ext_mode
= extension_enable
;
156 } else if (strcmp(behavior
, "disable") == 0) {
157 ext_mode
= extension_disable
;
159 _mesa_glsl_error(behavior_locp
, state
,
160 "Unknown extension behavior `%s'",
165 bool unsupported
= false;
167 if (strcmp(name
, "all") == 0) {
168 if ((ext_mode
== extension_enable
) || (ext_mode
== extension_require
)) {
169 _mesa_glsl_error(name_locp
, state
, "Cannot %s all extensions",
170 (ext_mode
== extension_enable
)
171 ? "enable" : "require");
174 } else if (strcmp(name
, "GL_ARB_draw_buffers") == 0) {
175 /* This extension is only supported in fragment shaders.
177 if (state
->target
!= fragment_shader
) {
180 state
->ARB_draw_buffers_enable
= (ext_mode
!= extension_disable
);
181 state
->ARB_draw_buffers_warn
= (ext_mode
== extension_warn
);
183 } else if (strcmp(name
, "GL_ARB_explicit_attrib_location") == 0) {
184 state
->ARB_explicit_attrib_location_enable
=
185 (ext_mode
!= extension_disable
);
186 state
->ARB_explicit_attrib_location_warn
=
187 (ext_mode
== extension_warn
);
189 unsupported
= !state
->extensions
->ARB_explicit_attrib_location
;
190 } else if (strcmp(name
, "GL_ARB_fragment_coord_conventions") == 0) {
191 state
->ARB_fragment_coord_conventions_enable
=
192 (ext_mode
!= extension_disable
);
193 state
->ARB_fragment_coord_conventions_warn
=
194 (ext_mode
== extension_warn
);
196 unsupported
= !state
->extensions
->ARB_fragment_coord_conventions
;
197 } else if (strcmp(name
, "GL_ARB_texture_rectangle") == 0) {
198 state
->ARB_texture_rectangle_enable
= (ext_mode
!= extension_disable
);
199 state
->ARB_texture_rectangle_warn
= (ext_mode
== extension_warn
);
200 } else if (strcmp(name
, "GL_EXT_texture_array") == 0) {
201 state
->EXT_texture_array_enable
= (ext_mode
!= extension_disable
);
202 state
->EXT_texture_array_warn
= (ext_mode
== extension_warn
);
204 unsupported
= !state
->extensions
->EXT_texture_array
;
205 } else if (strcmp(name
, "GL_ARB_shader_stencil_export") == 0) {
206 if (state
->target
!= fragment_shader
) {
209 state
->ARB_shader_stencil_export_enable
= (ext_mode
!= extension_disable
);
210 state
->ARB_shader_stencil_export_warn
= (ext_mode
== extension_warn
);
211 unsupported
= !state
->extensions
->ARB_shader_stencil_export
;
218 static const char *const fmt
= "extension `%s' unsupported in %s shader";
220 if (ext_mode
== extension_require
) {
221 _mesa_glsl_error(name_locp
, state
, fmt
,
222 name
, _mesa_glsl_shader_target_name(state
->target
));
225 _mesa_glsl_warning(name_locp
, state
, fmt
,
226 name
, _mesa_glsl_shader_target_name(state
->target
));
234 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
236 if (q
->flags
.q
.constant
)
239 if (q
->flags
.q
.invariant
)
240 printf("invariant ");
242 if (q
->flags
.q
.attribute
)
243 printf("attribute ");
245 if (q
->flags
.q
.varying
)
248 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
258 if (q
->flags
.q
.centroid
)
260 if (q
->flags
.q
.uniform
)
262 if (q
->flags
.q
.smooth
)
266 if (q
->flags
.q
.noperspective
)
267 printf("noperspective ");
272 ast_node::print(void) const
274 printf("unhandled node ");
278 ast_node::ast_node(void)
280 this->location
.source
= 0;
281 this->location
.line
= 0;
282 this->location
.column
= 0;
287 ast_opt_array_size_print(bool is_array
, const ast_expression
*array_size
)
301 ast_compound_statement::print(void) const
305 foreach_list_const(n
, &this->statements
) {
306 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
314 ast_compound_statement::ast_compound_statement(int new_scope
,
315 ast_node
*statements
)
317 this->new_scope
= new_scope
;
319 if (statements
!= NULL
) {
320 this->statements
.push_degenerate_list_at_head(&statements
->link
);
326 ast_expression::print(void) const
340 subexpressions
[0]->print();
341 printf("%s ", operator_string(oper
));
342 subexpressions
[1]->print();
345 case ast_field_selection
:
346 subexpressions
[0]->print();
347 printf(". %s ", primary_expression
.identifier
);
356 printf("%s ", operator_string(oper
));
357 subexpressions
[0]->print();
362 subexpressions
[0]->print();
363 printf("%s ", operator_string(oper
));
366 case ast_conditional
:
367 subexpressions
[0]->print();
369 subexpressions
[1]->print();
371 subexpressions
[1]->print();
374 case ast_array_index
:
375 subexpressions
[0]->print();
377 subexpressions
[1]->print();
381 case ast_function_call
: {
382 subexpressions
[0]->print();
385 foreach_list_const (n
, &this->expressions
) {
386 if (n
!= this->expressions
.get_head())
389 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
398 printf("%s ", primary_expression
.identifier
);
401 case ast_int_constant
:
402 printf("%d ", primary_expression
.int_constant
);
405 case ast_uint_constant
:
406 printf("%u ", primary_expression
.uint_constant
);
409 case ast_float_constant
:
410 printf("%f ", primary_expression
.float_constant
);
413 case ast_bool_constant
:
415 primary_expression
.bool_constant
421 foreach_list_const(n
, & this->expressions
) {
422 if (n
!= this->expressions
.get_head())
425 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
438 ast_expression::ast_expression(int oper
,
443 this->oper
= ast_operators(oper
);
444 this->subexpressions
[0] = ex0
;
445 this->subexpressions
[1] = ex1
;
446 this->subexpressions
[2] = ex2
;
451 ast_expression_statement::print(void) const
460 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
468 ast_function::print(void) const
470 return_type
->print();
471 printf(" %s (", identifier
);
473 foreach_list_const(n
, & this->parameters
) {
474 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
482 ast_function::ast_function(void)
483 : is_definition(false), signature(NULL
)
490 ast_fully_specified_type::print(void) const
492 _mesa_ast_type_qualifier_print(& qualifier
);
498 ast_parameter_declarator::print(void) const
502 printf("%s ", identifier
);
503 ast_opt_array_size_print(is_array
, array_size
);
508 ast_function_definition::print(void) const
516 ast_declaration::print(void) const
518 printf("%s ", identifier
);
519 ast_opt_array_size_print(is_array
, array_size
);
523 initializer
->print();
528 ast_declaration::ast_declaration(char *identifier
, int is_array
,
529 ast_expression
*array_size
,
530 ast_expression
*initializer
)
532 this->identifier
= identifier
;
533 this->is_array
= is_array
;
534 this->array_size
= array_size
;
535 this->initializer
= initializer
;
540 ast_declarator_list::print(void) const
542 assert(type
|| invariant
);
547 printf("invariant ");
549 foreach_list_const (ptr
, & this->declarations
) {
550 if (ptr
!= this->declarations
.get_head())
553 ast_node
*ast
= exec_node_data(ast_node
, ptr
, link
);
561 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
564 this->invariant
= false;
568 ast_jump_statement::print(void) const
572 printf("continue; ");
579 if (opt_return_value
)
580 opt_return_value
->print();
591 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
593 this->mode
= ast_jump_modes(mode
);
595 if (mode
== ast_return
)
596 opt_return_value
= return_value
;
601 ast_selection_statement::print(void) const
607 then_statement
->print();
609 if (else_statement
) {
611 else_statement
->print();
617 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
618 ast_node
*then_statement
,
619 ast_node
*else_statement
)
621 this->condition
= condition
;
622 this->then_statement
= then_statement
;
623 this->else_statement
= else_statement
;
628 ast_iteration_statement::print(void) const
634 init_statement
->print();
642 rest_expression
->print();
668 ast_iteration_statement::ast_iteration_statement(int mode
,
671 ast_expression
*rest_expression
,
674 this->mode
= ast_iteration_modes(mode
);
675 this->init_statement
= init
;
676 this->condition
= condition
;
677 this->rest_expression
= rest_expression
;
683 ast_struct_specifier::print(void) const
685 printf("struct %s { ", name
);
686 foreach_list_const(n
, &this->declarations
) {
687 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
694 ast_struct_specifier::ast_struct_specifier(char *identifier
,
695 ast_node
*declarator_list
)
697 if (identifier
== NULL
) {
698 static unsigned anon_count
= 1;
699 identifier
= talloc_asprintf(this, "#anon_struct_%04x", anon_count
);
703 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
707 do_common_optimization(exec_list
*ir
, bool linked
, unsigned max_unroll_iterations
)
709 GLboolean progress
= GL_FALSE
;
711 progress
= lower_instructions(ir
, SUB_TO_ADD_NEG
) || progress
;
714 progress
= do_function_inlining(ir
) || progress
;
715 progress
= do_dead_functions(ir
) || progress
;
717 progress
= do_structure_splitting(ir
) || progress
;
718 progress
= do_if_simplification(ir
) || progress
;
719 progress
= do_copy_propagation(ir
) || progress
;
721 progress
= do_dead_code(ir
) || progress
;
723 progress
= do_dead_code_unlinked(ir
) || progress
;
724 progress
= do_dead_code_local(ir
) || progress
;
725 progress
= do_tree_grafting(ir
) || progress
;
726 progress
= do_constant_propagation(ir
) || progress
;
728 progress
= do_constant_variable(ir
) || progress
;
730 progress
= do_constant_variable_unlinked(ir
) || progress
;
731 progress
= do_constant_folding(ir
) || progress
;
732 progress
= do_algebraic(ir
) || progress
;
733 progress
= do_lower_jumps(ir
) || progress
;
734 progress
= do_vec_index_to_swizzle(ir
) || progress
;
735 progress
= do_swizzle_swizzle(ir
) || progress
;
736 progress
= do_noop_swizzle(ir
) || progress
;
738 progress
= optimize_redundant_jumps(ir
) || progress
;
740 loop_state
*ls
= analyze_loop_variables(ir
);
741 progress
= set_loop_controls(ir
, ls
) || progress
;
742 progress
= unroll_loops(ir
, ls
, max_unroll_iterations
) || progress
;
751 * To be called at GL teardown time, this frees compiler datastructures.
753 * After calling this, any previously compiled shaders and shader
754 * programs would be invalid. So this should happen at approximately
758 _mesa_destroy_shader_compiler(void)
760 _mesa_destroy_shader_compiler_caches();
762 _mesa_glsl_release_types();
766 * Releases compiler caches to trade off performance for memory.
768 * Intended to be used with glReleaseShaderCompiler().
771 _mesa_destroy_shader_compiler_caches(void)
773 _mesa_glsl_release_functions();