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.
29 #include "main/core.h" /* for struct gl_context */
30 #include "main/context.h"
35 #include "glsl_parser_extras.h"
36 #include "glsl_parser.h"
37 #include "ir_optimization.h"
38 #include "loop_analysis.h"
41 * Format a short human-readable description of the given GLSL version.
44 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
)
46 return ralloc_asprintf(mem_ctx
, "GLSL%s %d.%02d", is_es
? " ES" : "",
47 version
/ 100, version
% 100);
50 _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context
*_ctx
,
51 GLenum target
, void *mem_ctx
)
55 case GL_VERTEX_SHADER
: this->target
= vertex_shader
; break;
56 case GL_FRAGMENT_SHADER
: this->target
= fragment_shader
; break;
57 case GL_GEOMETRY_SHADER
: this->target
= geometry_shader
; break;
61 this->translation_unit
.make_empty();
62 this->symbols
= new(mem_ctx
) glsl_symbol_table
;
63 this->info_log
= ralloc_strdup(mem_ctx
, "");
65 this->loop_nesting_ast
= NULL
;
66 this->switch_state
.switch_nesting_ast
= NULL
;
68 this->num_builtins_to_link
= 0;
70 /* Set default language version and extensions */
71 this->language_version
= 110;
72 this->es_shader
= false;
73 this->ARB_texture_rectangle_enable
= true;
75 /* OpenGL ES 2.0 has different defaults from desktop GL. */
76 if (ctx
->API
== API_OPENGLES2
) {
77 this->language_version
= 100;
78 this->es_shader
= true;
79 this->ARB_texture_rectangle_enable
= false;
82 this->extensions
= &ctx
->Extensions
;
84 this->Const
.MaxLights
= ctx
->Const
.MaxLights
;
85 this->Const
.MaxClipPlanes
= ctx
->Const
.MaxClipPlanes
;
86 this->Const
.MaxTextureUnits
= ctx
->Const
.MaxTextureUnits
;
87 this->Const
.MaxTextureCoords
= ctx
->Const
.MaxTextureCoordUnits
;
88 this->Const
.MaxVertexAttribs
= ctx
->Const
.VertexProgram
.MaxAttribs
;
89 this->Const
.MaxVertexUniformComponents
= ctx
->Const
.VertexProgram
.MaxUniformComponents
;
90 this->Const
.MaxVaryingFloats
= ctx
->Const
.MaxVarying
* 4;
91 this->Const
.MaxVertexTextureImageUnits
= ctx
->Const
.MaxVertexTextureImageUnits
;
92 this->Const
.MaxCombinedTextureImageUnits
= ctx
->Const
.MaxCombinedTextureImageUnits
;
93 this->Const
.MaxTextureImageUnits
= ctx
->Const
.MaxTextureImageUnits
;
94 this->Const
.MaxFragmentUniformComponents
= ctx
->Const
.FragmentProgram
.MaxUniformComponents
;
96 this->Const
.MaxDrawBuffers
= ctx
->Const
.MaxDrawBuffers
;
98 const unsigned lowest_version
=
99 (ctx
->API
== API_OPENGLES2
) || ctx
->Extensions
.ARB_ES2_compatibility
101 const unsigned highest_version
=
102 _mesa_is_desktop_gl(ctx
) ? ctx
->Const
.GLSLVersion
: 100;
103 char *supported
= ralloc_strdup(this, "");
105 for (unsigned ver
= lowest_version
; ver
<= highest_version
; ver
+= 10) {
106 const char *const prefix
= (ver
== lowest_version
)
108 : ((ver
== highest_version
) ? ", and " : ", ");
110 ralloc_asprintf_append(& supported
, "%s%d.%02d%s",
112 ver
/ 100, ver
% 100,
113 (ver
== 100) ? " ES" : "");
116 this->supported_version_string
= supported
;
118 if (ctx
->Const
.ForceGLSLExtensionsWarn
)
119 _mesa_glsl_process_extension("all", NULL
, "warn", NULL
, this);
121 this->default_uniform_qualifier
= new(this) ast_type_qualifier();
122 this->default_uniform_qualifier
->flags
.q
.shared
= 1;
123 this->default_uniform_qualifier
->flags
.q
.column_major
= 1;
127 * Determine whether the current GLSL version is sufficiently high to support
128 * a certain feature, and generate an error message if it isn't.
130 * \param required_glsl_version and \c required_glsl_es_version are
131 * interpreted as they are in _mesa_glsl_parse_state::is_version().
133 * \param locp is the parser location where the error should be reported.
135 * \param fmt (and additional arguments) constitute a printf-style error
136 * message to report if the version check fails. Information about the
137 * current and required GLSL versions will be appended. So, for example, if
138 * the GLSL version being compiled is 1.20, and check_version(130, 300, locp,
139 * "foo unsupported") is called, the error message will be "foo unsupported in
140 * GLSL 1.20 (GLSL 1.30 or GLSL 3.00 ES required)".
143 _mesa_glsl_parse_state::check_version(unsigned required_glsl_version
,
144 unsigned required_glsl_es_version
,
145 YYLTYPE
*locp
, const char *fmt
, ...)
147 if (this->is_version(required_glsl_version
, required_glsl_es_version
))
152 char *problem
= ralloc_vasprintf(ctx
, fmt
, args
);
154 const char *glsl_version_string
155 = glsl_compute_version_string(ctx
, false, required_glsl_version
);
156 const char *glsl_es_version_string
157 = glsl_compute_version_string(ctx
, true, required_glsl_es_version
);
158 const char *requirement_string
= "";
159 if (required_glsl_version
&& required_glsl_es_version
) {
160 requirement_string
= ralloc_asprintf(ctx
, " (%s or %s required)",
162 glsl_es_version_string
);
163 } else if (required_glsl_version
) {
164 requirement_string
= ralloc_asprintf(ctx
, " (%s required)",
165 glsl_version_string
);
166 } else if (required_glsl_es_version
) {
167 requirement_string
= ralloc_asprintf(ctx
, " (%s required)",
168 glsl_es_version_string
);
170 _mesa_glsl_error(locp
, this, "%s in %s%s.",
171 problem
, this->get_version_string(),
178 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
)
181 case vertex_shader
: return "vertex";
182 case fragment_shader
: return "fragment";
183 case geometry_shader
: return "geometry";
186 assert(!"Should not get here.");
190 /* This helper function will append the given message to the shader's
191 info log and report it via GL_ARB_debug_output. Per that extension,
192 'type' is one of the enum values classifying the message, and
193 'id' is the implementation-defined ID of the given message. */
195 _mesa_glsl_msg(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
196 GLenum type
, GLuint id
, const char *fmt
, va_list ap
)
198 bool error
= (type
== GL_DEBUG_TYPE_ERROR_ARB
);
200 assert(state
->info_log
!= NULL
);
202 /* Get the offset that the new message will be written to. */
203 int msg_offset
= strlen(state
->info_log
);
205 ralloc_asprintf_append(&state
->info_log
, "%u:%u(%u): %s: ",
209 error
? "error" : "warning");
210 ralloc_vasprintf_append(&state
->info_log
, fmt
, ap
);
212 const char *const msg
= &state
->info_log
[msg_offset
];
213 struct gl_context
*ctx
= state
->ctx
;
214 /* Report the error via GL_ARB_debug_output. */
216 _mesa_shader_debug(ctx
, type
, id
, msg
, strlen(msg
));
218 ralloc_strcat(&state
->info_log
, "\n");
222 _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
223 const char *fmt
, ...)
226 GLenum type
= GL_DEBUG_TYPE_ERROR_ARB
;
231 _mesa_glsl_msg(locp
, state
, type
, SHADER_ERROR_UNKNOWN
, fmt
, ap
);
237 _mesa_glsl_warning(const YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
238 const char *fmt
, ...)
241 GLenum type
= GL_DEBUG_TYPE_OTHER_ARB
;
244 _mesa_glsl_msg(locp
, state
, type
, 0, fmt
, ap
);
250 * Enum representing the possible behaviors that can be specified in
251 * an #extension directive.
261 * Element type for _mesa_glsl_supported_extensions
263 struct _mesa_glsl_extension
{
265 * Name of the extension when referred to in a GLSL extension
270 /** True if this extension is available to vertex shaders */
273 /** True if this extension is available to geometry shaders */
276 /** True if this extension is available to fragment shaders */
279 /** True if this extension is available to desktop GL shaders */
282 /** True if this extension is available to GLES shaders */
286 * Flag in the gl_extensions struct indicating whether this
287 * extension is supported by the driver, or
288 * &gl_extensions::dummy_true if supported by all drivers.
290 * Note: the type (GLboolean gl_extensions::*) is a "pointer to
291 * member" type, the type-safe alternative to the "offsetof" macro.
294 * - foo bar::* p declares p to be an "offset" to a field of type
295 * foo that exists within struct bar
296 * - &bar::baz computes the "offset" of field baz within struct bar
297 * - x.*p accesses the field of x that exists at "offset" p
298 * - x->*p is equivalent to (*x).*p
300 const GLboolean
gl_extensions::* supported_flag
;
303 * Flag in the _mesa_glsl_parse_state struct that should be set
304 * when this extension is enabled.
306 * See note in _mesa_glsl_extension::supported_flag about "pointer
309 bool _mesa_glsl_parse_state::* enable_flag
;
312 * Flag in the _mesa_glsl_parse_state struct that should be set
313 * when the shader requests "warn" behavior for this extension.
315 * See note in _mesa_glsl_extension::supported_flag about "pointer
318 bool _mesa_glsl_parse_state::* warn_flag
;
321 bool compatible_with_state(const _mesa_glsl_parse_state
*state
) const;
322 void set_flags(_mesa_glsl_parse_state
*state
, ext_behavior behavior
) const;
325 #define EXT(NAME, VS, GS, FS, GL, ES, SUPPORTED_FLAG) \
326 { "GL_" #NAME, VS, GS, FS, GL, ES, &gl_extensions::SUPPORTED_FLAG, \
327 &_mesa_glsl_parse_state::NAME##_enable, \
328 &_mesa_glsl_parse_state::NAME##_warn }
331 * Table of extensions that can be enabled/disabled within a shader,
332 * and the conditions under which they are supported.
334 static const _mesa_glsl_extension _mesa_glsl_supported_extensions
[] = {
335 /* target availability API availability */
336 /* name VS GS FS GL ES supported flag */
337 EXT(ARB_conservative_depth
, false, false, true, true, false, ARB_conservative_depth
),
338 EXT(ARB_draw_buffers
, false, false, true, true, false, dummy_true
),
339 EXT(ARB_draw_instanced
, true, false, false, true, false, ARB_draw_instanced
),
340 EXT(ARB_explicit_attrib_location
, true, false, true, true, false, ARB_explicit_attrib_location
),
341 EXT(ARB_fragment_coord_conventions
, true, false, true, true, false, ARB_fragment_coord_conventions
),
342 EXT(ARB_texture_rectangle
, true, false, true, true, false, dummy_true
),
343 EXT(EXT_texture_array
, true, false, true, true, false, EXT_texture_array
),
344 EXT(ARB_shader_texture_lod
, true, false, true, true, false, ARB_shader_texture_lod
),
345 EXT(ARB_shader_stencil_export
, false, false, true, true, false, ARB_shader_stencil_export
),
346 EXT(AMD_conservative_depth
, false, false, true, true, false, ARB_conservative_depth
),
347 EXT(AMD_shader_stencil_export
, false, false, true, true, false, ARB_shader_stencil_export
),
348 EXT(OES_texture_3D
, true, false, true, false, true, EXT_texture3D
),
349 EXT(OES_EGL_image_external
, true, false, true, false, true, OES_EGL_image_external
),
350 EXT(ARB_shader_bit_encoding
, true, true, true, true, false, ARB_shader_bit_encoding
),
351 EXT(ARB_uniform_buffer_object
, true, false, true, true, false, ARB_uniform_buffer_object
),
352 EXT(OES_standard_derivatives
, false, false, true, false, true, OES_standard_derivatives
),
353 EXT(ARB_texture_cube_map_array
, true, false, true, true, false, ARB_texture_cube_map_array
),
360 * Determine whether a given extension is compatible with the target,
361 * API, and extension information in the current parser state.
363 bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state
*
366 /* Check that this extension matches the type of shader we are
369 switch (state
->target
) {
371 if (!this->avail_in_VS
) {
375 case geometry_shader
:
376 if (!this->avail_in_GS
) {
380 case fragment_shader
:
381 if (!this->avail_in_FS
) {
386 assert (!"Unrecognized shader target");
390 /* Check that this extension matches whether we are compiling
391 * for desktop GL or GLES.
393 if (state
->es_shader
) {
394 if (!this->avail_in_ES
) return false;
396 if (!this->avail_in_GL
) return false;
399 /* Check that this extension is supported by the OpenGL
402 * Note: the ->* operator indexes into state->extensions by the
403 * offset this->supported_flag. See
404 * _mesa_glsl_extension::supported_flag for more info.
406 return state
->extensions
->*(this->supported_flag
);
410 * Set the appropriate flags in the parser state to establish the
411 * given behavior for this extension.
413 void _mesa_glsl_extension::set_flags(_mesa_glsl_parse_state
*state
,
414 ext_behavior behavior
) const
416 /* Note: the ->* operator indexes into state by the
417 * offsets this->enable_flag and this->warn_flag. See
418 * _mesa_glsl_extension::supported_flag for more info.
420 state
->*(this->enable_flag
) = (behavior
!= extension_disable
);
421 state
->*(this->warn_flag
) = (behavior
== extension_warn
);
425 * Find an extension by name in _mesa_glsl_supported_extensions. If
426 * the name is not found, return NULL.
428 static const _mesa_glsl_extension
*find_extension(const char *name
)
430 for (unsigned i
= 0; i
< Elements(_mesa_glsl_supported_extensions
); ++i
) {
431 if (strcmp(name
, _mesa_glsl_supported_extensions
[i
].name
) == 0) {
432 return &_mesa_glsl_supported_extensions
[i
];
440 _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
441 const char *behavior_string
, YYLTYPE
*behavior_locp
,
442 _mesa_glsl_parse_state
*state
)
444 ext_behavior behavior
;
445 if (strcmp(behavior_string
, "warn") == 0) {
446 behavior
= extension_warn
;
447 } else if (strcmp(behavior_string
, "require") == 0) {
448 behavior
= extension_require
;
449 } else if (strcmp(behavior_string
, "enable") == 0) {
450 behavior
= extension_enable
;
451 } else if (strcmp(behavior_string
, "disable") == 0) {
452 behavior
= extension_disable
;
454 _mesa_glsl_error(behavior_locp
, state
,
455 "Unknown extension behavior `%s'",
460 if (strcmp(name
, "all") == 0) {
461 if ((behavior
== extension_enable
) || (behavior
== extension_require
)) {
462 _mesa_glsl_error(name_locp
, state
, "Cannot %s all extensions",
463 (behavior
== extension_enable
)
464 ? "enable" : "require");
468 i
< Elements(_mesa_glsl_supported_extensions
); ++i
) {
469 const _mesa_glsl_extension
*extension
470 = &_mesa_glsl_supported_extensions
[i
];
471 if (extension
->compatible_with_state(state
)) {
472 _mesa_glsl_supported_extensions
[i
].set_flags(state
, behavior
);
477 const _mesa_glsl_extension
*extension
= find_extension(name
);
478 if (extension
&& extension
->compatible_with_state(state
)) {
479 extension
->set_flags(state
, behavior
);
481 static const char *const fmt
= "extension `%s' unsupported in %s shader";
483 if (behavior
== extension_require
) {
484 _mesa_glsl_error(name_locp
, state
, fmt
,
485 name
, _mesa_glsl_shader_target_name(state
->target
));
488 _mesa_glsl_warning(name_locp
, state
, fmt
,
489 name
, _mesa_glsl_shader_target_name(state
->target
));
498 _mesa_ast_type_qualifier_print(const struct ast_type_qualifier
*q
)
500 if (q
->flags
.q
.constant
)
503 if (q
->flags
.q
.invariant
)
504 printf("invariant ");
506 if (q
->flags
.q
.attribute
)
507 printf("attribute ");
509 if (q
->flags
.q
.varying
)
512 if (q
->flags
.q
.in
&& q
->flags
.q
.out
)
522 if (q
->flags
.q
.centroid
)
524 if (q
->flags
.q
.uniform
)
526 if (q
->flags
.q
.smooth
)
530 if (q
->flags
.q
.noperspective
)
531 printf("noperspective ");
536 ast_node::print(void) const
538 printf("unhandled node ");
542 ast_node::ast_node(void)
544 this->location
.source
= 0;
545 this->location
.line
= 0;
546 this->location
.column
= 0;
551 ast_opt_array_size_print(bool is_array
, const ast_expression
*array_size
)
565 ast_compound_statement::print(void) const
569 foreach_list_const(n
, &this->statements
) {
570 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
578 ast_compound_statement::ast_compound_statement(int new_scope
,
579 ast_node
*statements
)
581 this->new_scope
= new_scope
;
583 if (statements
!= NULL
) {
584 this->statements
.push_degenerate_list_at_head(&statements
->link
);
590 ast_expression::print(void) const
604 subexpressions
[0]->print();
605 printf("%s ", operator_string(oper
));
606 subexpressions
[1]->print();
609 case ast_field_selection
:
610 subexpressions
[0]->print();
611 printf(". %s ", primary_expression
.identifier
);
620 printf("%s ", operator_string(oper
));
621 subexpressions
[0]->print();
626 subexpressions
[0]->print();
627 printf("%s ", operator_string(oper
));
630 case ast_conditional
:
631 subexpressions
[0]->print();
633 subexpressions
[1]->print();
635 subexpressions
[2]->print();
638 case ast_array_index
:
639 subexpressions
[0]->print();
641 subexpressions
[1]->print();
645 case ast_function_call
: {
646 subexpressions
[0]->print();
649 foreach_list_const (n
, &this->expressions
) {
650 if (n
!= this->expressions
.get_head())
653 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
662 printf("%s ", primary_expression
.identifier
);
665 case ast_int_constant
:
666 printf("%d ", primary_expression
.int_constant
);
669 case ast_uint_constant
:
670 printf("%u ", primary_expression
.uint_constant
);
673 case ast_float_constant
:
674 printf("%f ", primary_expression
.float_constant
);
677 case ast_bool_constant
:
679 primary_expression
.bool_constant
685 foreach_list_const(n
, & this->expressions
) {
686 if (n
!= this->expressions
.get_head())
689 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
702 ast_expression::ast_expression(int oper
,
707 this->oper
= ast_operators(oper
);
708 this->subexpressions
[0] = ex0
;
709 this->subexpressions
[1] = ex1
;
710 this->subexpressions
[2] = ex2
;
711 this->non_lvalue_description
= NULL
;
716 ast_expression_statement::print(void) const
725 ast_expression_statement::ast_expression_statement(ast_expression
*ex
) :
733 ast_function::print(void) const
735 return_type
->print();
736 printf(" %s (", identifier
);
738 foreach_list_const(n
, & this->parameters
) {
739 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
747 ast_function::ast_function(void)
748 : is_definition(false), signature(NULL
)
755 ast_fully_specified_type::print(void) const
757 _mesa_ast_type_qualifier_print(& qualifier
);
763 ast_parameter_declarator::print(void) const
767 printf("%s ", identifier
);
768 ast_opt_array_size_print(is_array
, array_size
);
773 ast_function_definition::print(void) const
781 ast_declaration::print(void) const
783 printf("%s ", identifier
);
784 ast_opt_array_size_print(is_array
, array_size
);
788 initializer
->print();
793 ast_declaration::ast_declaration(const char *identifier
, int is_array
,
794 ast_expression
*array_size
,
795 ast_expression
*initializer
)
797 this->identifier
= identifier
;
798 this->is_array
= is_array
;
799 this->array_size
= array_size
;
800 this->initializer
= initializer
;
805 ast_declarator_list::print(void) const
807 assert(type
|| invariant
);
812 printf("invariant ");
814 foreach_list_const (ptr
, & this->declarations
) {
815 if (ptr
!= this->declarations
.get_head())
818 ast_node
*ast
= exec_node_data(ast_node
, ptr
, link
);
826 ast_declarator_list::ast_declarator_list(ast_fully_specified_type
*type
)
829 this->invariant
= false;
830 this->ubo_qualifiers_valid
= false;
834 ast_jump_statement::print(void) const
838 printf("continue; ");
845 if (opt_return_value
)
846 opt_return_value
->print();
857 ast_jump_statement::ast_jump_statement(int mode
, ast_expression
*return_value
)
859 this->mode
= ast_jump_modes(mode
);
861 if (mode
== ast_return
)
862 opt_return_value
= return_value
;
867 ast_selection_statement::print(void) const
873 then_statement
->print();
875 if (else_statement
) {
877 else_statement
->print();
883 ast_selection_statement::ast_selection_statement(ast_expression
*condition
,
884 ast_node
*then_statement
,
885 ast_node
*else_statement
)
887 this->condition
= condition
;
888 this->then_statement
= then_statement
;
889 this->else_statement
= else_statement
;
894 ast_switch_statement::print(void) const
897 test_expression
->print();
904 ast_switch_statement::ast_switch_statement(ast_expression
*test_expression
,
907 this->test_expression
= test_expression
;
913 ast_switch_body::print(void) const
923 ast_switch_body::ast_switch_body(ast_case_statement_list
*stmts
)
929 void ast_case_label::print(void) const
931 if (test_value
!= NULL
) {
941 ast_case_label::ast_case_label(ast_expression
*test_value
)
943 this->test_value
= test_value
;
947 void ast_case_label_list::print(void) const
949 foreach_list_const(n
, & this->labels
) {
950 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
957 ast_case_label_list::ast_case_label_list(void)
962 void ast_case_statement::print(void) const
965 foreach_list_const(n
, & this->stmts
) {
966 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
973 ast_case_statement::ast_case_statement(ast_case_label_list
*labels
)
975 this->labels
= labels
;
979 void ast_case_statement_list::print(void) const
981 foreach_list_const(n
, & this->cases
) {
982 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
988 ast_case_statement_list::ast_case_statement_list(void)
994 ast_iteration_statement::print(void) const
1000 init_statement
->print();
1007 if (rest_expression
)
1008 rest_expression
->print();
1034 ast_iteration_statement::ast_iteration_statement(int mode
,
1036 ast_node
*condition
,
1037 ast_expression
*rest_expression
,
1040 this->mode
= ast_iteration_modes(mode
);
1041 this->init_statement
= init
;
1042 this->condition
= condition
;
1043 this->rest_expression
= rest_expression
;
1049 ast_struct_specifier::print(void) const
1051 printf("struct %s { ", name
);
1052 foreach_list_const(n
, &this->declarations
) {
1053 ast_node
*ast
= exec_node_data(ast_node
, n
, link
);
1060 ast_struct_specifier::ast_struct_specifier(const char *identifier
,
1061 ast_declarator_list
*declarator_list
)
1063 if (identifier
== NULL
) {
1064 static unsigned anon_count
= 1;
1065 identifier
= ralloc_asprintf(this, "#anon_struct_%04x", anon_count
);
1069 this->declarations
.push_degenerate_list_at_head(&declarator_list
->link
);
1073 * Do the set of common optimizations passes
1075 * \param ir List of instructions to be optimized
1076 * \param linked Is the shader linked? This enables
1077 * optimizations passes that remove code at
1078 * global scope and could cause linking to
1080 * \param uniform_locations_assigned Have locations already been assigned for
1081 * uniforms? This prevents the declarations
1082 * of unused uniforms from being removed.
1083 * The setting of this flag only matters if
1084 * \c linked is \c true.
1085 * \param max_unroll_iterations Maximum number of loop iterations to be
1086 * unrolled. Setting to 0 forces all loops
1090 do_common_optimization(exec_list
*ir
, bool linked
,
1091 bool uniform_locations_assigned
,
1092 unsigned max_unroll_iterations
)
1094 GLboolean progress
= GL_FALSE
;
1096 progress
= lower_instructions(ir
, SUB_TO_ADD_NEG
) || progress
;
1099 progress
= do_function_inlining(ir
) || progress
;
1100 progress
= do_dead_functions(ir
) || progress
;
1101 progress
= do_structure_splitting(ir
) || progress
;
1103 progress
= do_if_simplification(ir
) || progress
;
1104 progress
= do_copy_propagation(ir
) || progress
;
1105 progress
= do_copy_propagation_elements(ir
) || progress
;
1107 progress
= do_dead_code(ir
, uniform_locations_assigned
) || progress
;
1109 progress
= do_dead_code_unlinked(ir
) || progress
;
1110 progress
= do_dead_code_local(ir
) || progress
;
1111 progress
= do_tree_grafting(ir
) || progress
;
1112 progress
= do_constant_propagation(ir
) || progress
;
1114 progress
= do_constant_variable(ir
) || progress
;
1116 progress
= do_constant_variable_unlinked(ir
) || progress
;
1117 progress
= do_constant_folding(ir
) || progress
;
1118 progress
= do_algebraic(ir
) || progress
;
1119 progress
= do_lower_jumps(ir
) || progress
;
1120 progress
= do_vec_index_to_swizzle(ir
) || progress
;
1121 progress
= do_swizzle_swizzle(ir
) || progress
;
1122 progress
= do_noop_swizzle(ir
) || progress
;
1124 progress
= optimize_split_arrays(ir
, linked
) || progress
;
1125 progress
= optimize_redundant_jumps(ir
) || progress
;
1127 loop_state
*ls
= analyze_loop_variables(ir
);
1128 if (ls
->loop_found
) {
1129 progress
= set_loop_controls(ir
, ls
) || progress
;
1130 progress
= unroll_loops(ir
, ls
, max_unroll_iterations
) || progress
;
1140 * To be called at GL teardown time, this frees compiler datastructures.
1142 * After calling this, any previously compiled shaders and shader
1143 * programs would be invalid. So this should happen at approximately
1147 _mesa_destroy_shader_compiler(void)
1149 _mesa_destroy_shader_compiler_caches();
1151 _mesa_glsl_release_types();
1155 * Releases compiler caches to trade off performance for memory.
1157 * Intended to be used with glReleaseShaderCompiler().
1160 _mesa_destroy_shader_compiler_caches(void)
1162 _mesa_glsl_release_functions();