2 * Copyright © 2010 Intel Corporation
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11 * The above copyright notice and this permission notice (including the next
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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,
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25 #ifndef GLSL_PARSER_EXTRAS_H
26 #define GLSL_PARSER_EXTRAS_H
29 * Most of the definitions here only apply to C++
35 #include "glsl_symbol_table.h"
39 struct glsl_switch_state
{
40 /** Temporary variables needed for switch statement. */
41 ir_variable
*test_var
;
42 ir_variable
*is_fallthru_var
;
43 class ast_switch_statement
*switch_nesting_ast
;
45 /** Used to detect if 'continue' was called inside a switch. */
46 ir_variable
*continue_inside
;
48 /** Used to set condition if 'default' label should be chosen. */
49 ir_variable
*run_default
;
51 /** Table of constant values already used in case labels */
52 struct hash_table
*labels_ht
;
53 class ast_case_label
*previous_default
;
55 bool is_switch_innermost
; // if switch stmt is closest to break, ...
59 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
);
61 typedef struct YYLTYPE
{
68 # define YYLTYPE_IS_DECLARED 1
69 # define YYLTYPE_IS_TRIVIAL 1
71 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
72 const char *fmt
, ...);
75 struct _mesa_glsl_parse_state
{
76 _mesa_glsl_parse_state(struct gl_context
*_ctx
, gl_shader_stage stage
,
79 DECLARE_RALLOC_CXX_OPERATORS(_mesa_glsl_parse_state
);
82 * Generate a string representing the GLSL version currently being compiled
83 * (useful for error messages).
85 const char *get_version_string()
87 return glsl_compute_version_string(this, this->es_shader
,
88 this->language_version
);
92 * Determine whether the current GLSL version is sufficiently high to
93 * support a certain feature.
95 * \param required_glsl_version is the desktop GLSL version that is
96 * required to support the feature, or 0 if no version of desktop GLSL
97 * supports the feature.
99 * \param required_glsl_es_version is the GLSL ES version that is required
100 * to support the feature, or 0 if no version of GLSL ES suports the
103 bool is_version(unsigned required_glsl_version
,
104 unsigned required_glsl_es_version
) const
106 unsigned required_version
= this->es_shader
?
107 required_glsl_es_version
: required_glsl_version
;
108 unsigned this_version
= this->forced_language_version
109 ? this->forced_language_version
: this->language_version
;
110 return required_version
!= 0
111 && this_version
>= required_version
;
114 bool check_version(unsigned required_glsl_version
,
115 unsigned required_glsl_es_version
,
116 YYLTYPE
*locp
, const char *fmt
, ...) PRINTFLIKE(5, 6);
118 bool check_precision_qualifiers_allowed(YYLTYPE
*locp
)
120 return check_version(130, 100, locp
,
121 "precision qualifiers are forbidden");
124 bool check_bitwise_operations_allowed(YYLTYPE
*locp
)
126 return check_version(130, 300, locp
, "bit-wise operations are forbidden");
129 bool check_explicit_attrib_stream_allowed(YYLTYPE
*locp
)
131 if (!this->has_explicit_attrib_stream()) {
132 const char *const requirement
= "GL_ARB_gpu_shader5 extension or GLSL 4.00";
134 _mesa_glsl_error(locp
, this, "explicit stream requires %s",
142 bool check_explicit_attrib_location_allowed(YYLTYPE
*locp
,
143 const ir_variable
*var
)
145 if (!this->has_explicit_attrib_location()) {
146 const char *const requirement
= this->es_shader
148 : "GL_ARB_explicit_attrib_location extension or GLSL 3.30";
150 _mesa_glsl_error(locp
, this, "%s explicit location requires %s",
151 mode_string(var
), requirement
);
158 bool check_separate_shader_objects_allowed(YYLTYPE
*locp
,
159 const ir_variable
*var
)
161 if (!this->has_separate_shader_objects()) {
162 const char *const requirement
= this->es_shader
163 ? "GL_EXT_separate_shader_objects extension or GLSL ES 3.10"
164 : "GL_ARB_separate_shader_objects extension or GLSL 4.20";
166 _mesa_glsl_error(locp
, this, "%s explicit location requires %s",
167 mode_string(var
), requirement
);
174 bool check_explicit_uniform_location_allowed(YYLTYPE
*locp
,
177 if (!this->has_explicit_attrib_location() ||
178 !this->has_explicit_uniform_location()) {
179 const char *const requirement
= this->es_shader
181 : "GL_ARB_explicit_uniform_location and either "
182 "GL_ARB_explicit_attrib_location or GLSL 3.30.";
184 _mesa_glsl_error(locp
, this,
185 "uniform explicit location requires %s",
193 bool has_atomic_counters() const
195 return ARB_shader_atomic_counters_enable
|| is_version(420, 310);
198 bool has_explicit_attrib_stream() const
200 return ARB_gpu_shader5_enable
|| is_version(400, 0);
203 bool has_explicit_attrib_location() const
205 return ARB_explicit_attrib_location_enable
|| is_version(330, 300);
208 bool has_explicit_uniform_location() const
210 return ARB_explicit_uniform_location_enable
|| is_version(430, 310);
213 bool has_uniform_buffer_objects() const
215 return ARB_uniform_buffer_object_enable
|| is_version(140, 300);
218 bool has_shader_storage_buffer_objects() const
220 return ARB_shader_storage_buffer_object_enable
|| is_version(430, 310);
223 bool has_separate_shader_objects() const
225 return ARB_separate_shader_objects_enable
|| is_version(410, 310)
226 || EXT_separate_shader_objects_enable
;
229 bool has_double() const
231 return ARB_gpu_shader_fp64_enable
|| is_version(400, 0);
234 bool has_420pack() const
236 return ARB_shading_language_420pack_enable
|| is_version(420, 0);
239 bool has_compute_shader() const
241 return ARB_compute_shader_enable
|| is_version(430, 310);
244 void process_version_directive(YYLTYPE
*locp
, int version
,
247 struct gl_context
*const ctx
;
249 exec_list translation_unit
;
250 glsl_symbol_table
*symbols
;
252 unsigned num_supported_versions
;
256 } supported_versions
[15];
259 unsigned language_version
;
260 unsigned forced_language_version
;
261 gl_shader_stage stage
;
264 * Number of nested struct_specifier levels
266 * Outside a struct_specifier, this is zero.
268 unsigned struct_specifier_depth
;
271 * Default uniform layout qualifiers tracked during parsing.
272 * Currently affects uniform blocks and uniform buffer variables in
275 struct ast_type_qualifier
*default_uniform_qualifier
;
278 * Default shader storage layout qualifiers tracked during parsing.
279 * Currently affects shader storage blocks and shader storage buffer
280 * variables in those blocks.
282 struct ast_type_qualifier
*default_shader_storage_qualifier
;
285 * Variables to track different cases if a fragment shader redeclares
286 * built-in variable gl_FragCoord.
288 * Note: These values are computed at ast_to_hir time rather than at parse
291 bool fs_redeclares_gl_fragcoord
;
292 bool fs_origin_upper_left
;
293 bool fs_pixel_center_integer
;
294 bool fs_redeclares_gl_fragcoord_with_no_layout_qualifiers
;
297 * True if a geometry shader input primitive type or tessellation control
298 * output vertices were specified using a layout directive.
300 * Note: these values are computed at ast_to_hir time rather than at parse
303 bool gs_input_prim_type_specified
;
304 bool tcs_output_vertices_specified
;
307 * Input layout qualifiers from GLSL 1.50 (geometry shader controls),
308 * and GLSL 4.00 (tessellation evaluation shader)
310 struct ast_type_qualifier
*in_qualifier
;
313 * True if a compute shader input local size was specified using a layout
316 * Note: this value is computed at ast_to_hir time rather than at parse
319 bool cs_input_local_size_specified
;
322 * If cs_input_local_size_specified is true, the local size that was
323 * specified. Otherwise ignored.
325 unsigned cs_input_local_size
[3];
328 * Output layout qualifiers from GLSL 1.50 (geometry shader controls),
329 * and GLSL 4.00 (tessellation control shader).
331 struct ast_type_qualifier
*out_qualifier
;
334 * Printable list of GLSL versions supported by the current context
337 * This string should probably be generated per-context instead of per
338 * invokation of the compiler. This should be changed when the method of
339 * tracking supported GLSL versions changes.
341 const char *supported_version_string
;
344 * Implementation defined limits that affect built-in variables, etc.
346 * \sa struct gl_constants (in mtypes.h)
351 unsigned MaxClipPlanes
;
352 unsigned MaxTextureUnits
;
353 unsigned MaxTextureCoords
;
354 unsigned MaxVertexAttribs
;
355 unsigned MaxVertexUniformComponents
;
356 unsigned MaxVertexTextureImageUnits
;
357 unsigned MaxCombinedTextureImageUnits
;
358 unsigned MaxTextureImageUnits
;
359 unsigned MaxFragmentUniformComponents
;
361 /* ARB_draw_buffers */
362 unsigned MaxDrawBuffers
;
365 int MinProgramTexelOffset
;
366 int MaxProgramTexelOffset
;
369 unsigned MaxVertexOutputComponents
;
370 unsigned MaxGeometryInputComponents
;
371 unsigned MaxGeometryOutputComponents
;
372 unsigned MaxFragmentInputComponents
;
373 unsigned MaxGeometryTextureImageUnits
;
374 unsigned MaxGeometryOutputVertices
;
375 unsigned MaxGeometryTotalOutputComponents
;
376 unsigned MaxGeometryUniformComponents
;
378 /* ARB_shader_atomic_counters */
379 unsigned MaxVertexAtomicCounters
;
380 unsigned MaxTessControlAtomicCounters
;
381 unsigned MaxTessEvaluationAtomicCounters
;
382 unsigned MaxGeometryAtomicCounters
;
383 unsigned MaxFragmentAtomicCounters
;
384 unsigned MaxCombinedAtomicCounters
;
385 unsigned MaxAtomicBufferBindings
;
387 /* These are also atomic counter related, but they weren't added to
388 * until atomic counters were added to core in GLSL 4.20 and GLSL ES
391 unsigned MaxVertexAtomicCounterBuffers
;
392 unsigned MaxTessControlAtomicCounterBuffers
;
393 unsigned MaxTessEvaluationAtomicCounterBuffers
;
394 unsigned MaxGeometryAtomicCounterBuffers
;
395 unsigned MaxFragmentAtomicCounterBuffers
;
396 unsigned MaxCombinedAtomicCounterBuffers
;
397 unsigned MaxAtomicCounterBufferSize
;
399 /* ARB_compute_shader */
400 unsigned MaxComputeWorkGroupCount
[3];
401 unsigned MaxComputeWorkGroupSize
[3];
403 /* ARB_shader_image_load_store */
404 unsigned MaxImageUnits
;
405 unsigned MaxCombinedShaderOutputResources
;
406 unsigned MaxImageSamples
;
407 unsigned MaxVertexImageUniforms
;
408 unsigned MaxTessControlImageUniforms
;
409 unsigned MaxTessEvaluationImageUniforms
;
410 unsigned MaxGeometryImageUniforms
;
411 unsigned MaxFragmentImageUniforms
;
412 unsigned MaxCombinedImageUniforms
;
414 /* ARB_viewport_array */
415 unsigned MaxViewports
;
417 /* ARB_tessellation_shader */
418 unsigned MaxPatchVertices
;
419 unsigned MaxTessGenLevel
;
420 unsigned MaxTessControlInputComponents
;
421 unsigned MaxTessControlOutputComponents
;
422 unsigned MaxTessControlTextureImageUnits
;
423 unsigned MaxTessEvaluationInputComponents
;
424 unsigned MaxTessEvaluationOutputComponents
;
425 unsigned MaxTessEvaluationTextureImageUnits
;
426 unsigned MaxTessPatchComponents
;
427 unsigned MaxTessControlTotalOutputComponents
;
428 unsigned MaxTessControlUniformComponents
;
429 unsigned MaxTessEvaluationUniformComponents
;
433 * During AST to IR conversion, pointer to current IR function
435 * Will be \c NULL whenever the AST to IR conversion is not inside a
436 * function definition.
438 class ir_function_signature
*current_function
;
441 * During AST to IR conversion, pointer to the toplevel IR
442 * instruction list being generated.
444 exec_list
*toplevel_ir
;
446 /** Have we found a return statement in this function? */
449 /** Was there an error during compilation? */
453 * Are all shader inputs / outputs invariant?
455 * This is set when the 'STDGL invariant(all)' pragma is used.
459 /** Loop or switch statement containing the current instructions. */
460 class ast_iteration_statement
*loop_nesting_ast
;
462 struct glsl_switch_state switch_state
;
464 /** List of structures defined in user code. */
465 const glsl_type
**user_structures
;
466 unsigned num_user_structures
;
471 * \name Enable bits for GLSL extensions
474 /* ARB extensions go here, sorted alphabetically.
476 bool ARB_arrays_of_arrays_enable
;
477 bool ARB_arrays_of_arrays_warn
;
478 bool ARB_compute_shader_enable
;
479 bool ARB_compute_shader_warn
;
480 bool ARB_conservative_depth_enable
;
481 bool ARB_conservative_depth_warn
;
482 bool ARB_derivative_control_enable
;
483 bool ARB_derivative_control_warn
;
484 bool ARB_draw_buffers_enable
;
485 bool ARB_draw_buffers_warn
;
486 bool ARB_draw_instanced_enable
;
487 bool ARB_draw_instanced_warn
;
488 bool ARB_explicit_attrib_location_enable
;
489 bool ARB_explicit_attrib_location_warn
;
490 bool ARB_explicit_uniform_location_enable
;
491 bool ARB_explicit_uniform_location_warn
;
492 bool ARB_fragment_coord_conventions_enable
;
493 bool ARB_fragment_coord_conventions_warn
;
494 bool ARB_fragment_layer_viewport_enable
;
495 bool ARB_fragment_layer_viewport_warn
;
496 bool ARB_gpu_shader5_enable
;
497 bool ARB_gpu_shader5_warn
;
498 bool ARB_gpu_shader_fp64_enable
;
499 bool ARB_gpu_shader_fp64_warn
;
500 bool ARB_sample_shading_enable
;
501 bool ARB_sample_shading_warn
;
502 bool ARB_separate_shader_objects_enable
;
503 bool ARB_separate_shader_objects_warn
;
504 bool ARB_shader_atomic_counters_enable
;
505 bool ARB_shader_atomic_counters_warn
;
506 bool ARB_shader_bit_encoding_enable
;
507 bool ARB_shader_bit_encoding_warn
;
508 bool ARB_shader_image_load_store_enable
;
509 bool ARB_shader_image_load_store_warn
;
510 bool ARB_shader_image_size_enable
;
511 bool ARB_shader_image_size_warn
;
512 bool ARB_shader_precision_enable
;
513 bool ARB_shader_precision_warn
;
514 bool ARB_shader_stencil_export_enable
;
515 bool ARB_shader_stencil_export_warn
;
516 bool ARB_shader_storage_buffer_object_enable
;
517 bool ARB_shader_storage_buffer_object_warn
;
518 bool ARB_shader_subroutine_enable
;
519 bool ARB_shader_subroutine_warn
;
520 bool ARB_shader_texture_image_samples_enable
;
521 bool ARB_shader_texture_image_samples_warn
;
522 bool ARB_shader_texture_lod_enable
;
523 bool ARB_shader_texture_lod_warn
;
524 bool ARB_shading_language_420pack_enable
;
525 bool ARB_shading_language_420pack_warn
;
526 bool ARB_shading_language_packing_enable
;
527 bool ARB_shading_language_packing_warn
;
528 bool ARB_tessellation_shader_enable
;
529 bool ARB_tessellation_shader_warn
;
530 bool ARB_texture_cube_map_array_enable
;
531 bool ARB_texture_cube_map_array_warn
;
532 bool ARB_texture_gather_enable
;
533 bool ARB_texture_gather_warn
;
534 bool ARB_texture_multisample_enable
;
535 bool ARB_texture_multisample_warn
;
536 bool ARB_texture_query_levels_enable
;
537 bool ARB_texture_query_levels_warn
;
538 bool ARB_texture_query_lod_enable
;
539 bool ARB_texture_query_lod_warn
;
540 bool ARB_texture_rectangle_enable
;
541 bool ARB_texture_rectangle_warn
;
542 bool ARB_uniform_buffer_object_enable
;
543 bool ARB_uniform_buffer_object_warn
;
544 bool ARB_vertex_attrib_64bit_enable
;
545 bool ARB_vertex_attrib_64bit_warn
;
546 bool ARB_viewport_array_enable
;
547 bool ARB_viewport_array_warn
;
549 /* KHR extensions go here, sorted alphabetically.
552 /* OES extensions go here, sorted alphabetically.
554 bool OES_EGL_image_external_enable
;
555 bool OES_EGL_image_external_warn
;
556 bool OES_standard_derivatives_enable
;
557 bool OES_standard_derivatives_warn
;
558 bool OES_texture_3D_enable
;
559 bool OES_texture_3D_warn
;
560 bool OES_texture_storage_multisample_2d_array_enable
;
561 bool OES_texture_storage_multisample_2d_array_warn
;
563 /* All other extensions go here, sorted alphabetically.
565 bool AMD_conservative_depth_enable
;
566 bool AMD_conservative_depth_warn
;
567 bool AMD_shader_stencil_export_enable
;
568 bool AMD_shader_stencil_export_warn
;
569 bool AMD_shader_trinary_minmax_enable
;
570 bool AMD_shader_trinary_minmax_warn
;
571 bool AMD_vertex_shader_layer_enable
;
572 bool AMD_vertex_shader_layer_warn
;
573 bool AMD_vertex_shader_viewport_index_enable
;
574 bool AMD_vertex_shader_viewport_index_warn
;
575 bool EXT_draw_buffers_enable
;
576 bool EXT_draw_buffers_warn
;
577 bool EXT_separate_shader_objects_enable
;
578 bool EXT_separate_shader_objects_warn
;
579 bool EXT_shader_integer_mix_enable
;
580 bool EXT_shader_integer_mix_warn
;
581 bool EXT_texture_array_enable
;
582 bool EXT_texture_array_warn
;
585 /** Extensions supported by the OpenGL implementation. */
586 const struct gl_extensions
*extensions
;
588 bool uses_builtin_functions
;
589 bool fs_uses_gl_fragcoord
;
592 * For geometry shaders, size of the most recently seen input declaration
593 * that was a sized array, or 0 if no sized input array declarations have
596 * Unused for other shader types.
598 unsigned gs_input_size
;
600 bool fs_early_fragment_tests
;
603 * For tessellation control shaders, size of the most recently seen output
604 * declaration that was a sized array, or 0 if no sized output array
605 * declarations have been seen.
607 * Unused for other shader types.
609 unsigned tcs_output_size
;
611 /** Atomic counter offsets by binding */
612 unsigned atomic_counter_offsets
[MAX_COMBINED_ATOMIC_BUFFERS
];
614 bool allow_extension_directive_midshader
;
617 * Known subroutine type declarations.
619 int num_subroutine_types
;
620 ir_function
**subroutine_types
;
623 * Functions that are associated with
627 ir_function
**subroutines
;
630 * field selection temporary parser storage -
631 * did the parser just parse a dot.
636 # define YYLLOC_DEFAULT(Current, Rhs, N) \
640 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
641 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
642 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
643 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
647 (Current).first_line = (Current).last_line = \
648 YYRHSLOC(Rhs, 0).last_line; \
649 (Current).first_column = (Current).last_column = \
650 YYRHSLOC(Rhs, 0).last_column; \
652 (Current).source = 0; \
656 * Emit a warning to the shader log
658 * \sa _mesa_glsl_error
660 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
661 _mesa_glsl_parse_state
*state
,
662 const char *fmt
, ...);
664 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
667 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
670 extern int _mesa_glsl_lexer_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
673 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
676 * Process elements of the #extension directive
679 * If \c name and \c behavior are valid, \c true is returned. Otherwise
680 * \c false is returned.
682 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
683 const char *behavior
,
684 YYLTYPE
*behavior_locp
,
685 _mesa_glsl_parse_state
*state
);
687 #endif /* __cplusplus */
691 * These definitions apply to C and C++
698 * Get the textual name of the specified shader stage (which is a
702 _mesa_shader_stage_to_string(unsigned stage
);
705 _mesa_shader_stage_to_abbrev(unsigned stage
);
707 extern int glcpp_preprocess(void *ctx
, const char **shader
, char **info_log
,
708 const struct gl_extensions
*extensions
, struct gl_context
*gl_ctx
);
710 extern void _mesa_destroy_shader_compiler(void);
711 extern void _mesa_destroy_shader_compiler_caches(void);
718 #endif /* GLSL_PARSER_EXTRAS_H */