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Diffstat (limited to 'src/compiler/glsl/glsl_parser_extras.h')
| -rw-r--r-- | src/compiler/glsl/glsl_parser_extras.h | 752 |
1 files changed, 752 insertions, 0 deletions
diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h new file mode 100644 index 0000000..3f88e01 --- /dev/null +++ b/src/compiler/glsl/glsl_parser_extras.h @@ -0,0 +1,752 @@ +/* + * Copyright © 2010 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + */ + +#pragma once +#ifndef GLSL_PARSER_EXTRAS_H +#define GLSL_PARSER_EXTRAS_H + +/* + * Most of the definitions here only apply to C++ + */ +#ifdef __cplusplus + + +#include <stdlib.h> +#include "glsl_symbol_table.h" + +struct gl_context; + +struct glsl_switch_state { + /** Temporary variables needed for switch statement. */ + ir_variable *test_var; + ir_variable *is_fallthru_var; + class ast_switch_statement *switch_nesting_ast; + + /** Used to detect if 'continue' was called inside a switch. */ + ir_variable *continue_inside; + + /** Used to set condition if 'default' label should be chosen. */ + ir_variable *run_default; + + /** Table of constant values already used in case labels */ + struct hash_table *labels_ht; + class ast_case_label *previous_default; + + bool is_switch_innermost; // if switch stmt is closest to break, ... +}; + +const char * +glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version); + +typedef struct YYLTYPE { + int first_line; + int first_column; + int last_line; + int last_column; + unsigned source; +} YYLTYPE; +# define YYLTYPE_IS_DECLARED 1 +# define YYLTYPE_IS_TRIVIAL 1 + +extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state, + const char *fmt, ...); + + +struct _mesa_glsl_parse_state { + _mesa_glsl_parse_state(struct gl_context *_ctx, gl_shader_stage stage, + void *mem_ctx); + + DECLARE_RALLOC_CXX_OPERATORS(_mesa_glsl_parse_state); + + /** + * Generate a string representing the GLSL version currently being compiled + * (useful for error messages). + */ + const char *get_version_string() + { + return glsl_compute_version_string(this, this->es_shader, + this->language_version); + } + + /** + * Determine whether the current GLSL version is sufficiently high to + * support a certain feature. + * + * \param required_glsl_version is the desktop GLSL version that is + * required to support the feature, or 0 if no version of desktop GLSL + * supports the feature. + * + * \param required_glsl_es_version is the GLSL ES version that is required + * to support the feature, or 0 if no version of GLSL ES supports the + * feature. + */ + bool is_version(unsigned required_glsl_version, + unsigned required_glsl_es_version) const + { + unsigned required_version = this->es_shader ? + required_glsl_es_version : required_glsl_version; + unsigned this_version = this->forced_language_version + ? this->forced_language_version : this->language_version; + return required_version != 0 + && this_version >= required_version; + } + + bool check_version(unsigned required_glsl_version, + unsigned required_glsl_es_version, + YYLTYPE *locp, const char *fmt, ...) PRINTFLIKE(5, 6); + + bool check_arrays_of_arrays_allowed(YYLTYPE *locp) + { + if (!(ARB_arrays_of_arrays_enable || is_version(430, 310))) { + const char *const requirement = this->es_shader + ? "GLSL ES 3.10" + : "GL_ARB_arrays_of_arrays or GLSL 4.30"; + _mesa_glsl_error(locp, this, + "%s required for defining arrays of arrays.", + requirement); + return false; + } + return true; + } + + bool check_precision_qualifiers_allowed(YYLTYPE *locp) + { + return check_version(130, 100, locp, + "precision qualifiers are forbidden"); + } + + bool check_bitwise_operations_allowed(YYLTYPE *locp) + { + return check_version(130, 300, locp, "bit-wise operations are forbidden"); + } + + bool check_explicit_attrib_stream_allowed(YYLTYPE *locp) + { + if (!this->has_explicit_attrib_stream()) { + const char *const requirement = "GL_ARB_gpu_shader5 extension or GLSL 4.00"; + + _mesa_glsl_error(locp, this, "explicit stream requires %s", + requirement); + return false; + } + + return true; + } + + bool check_explicit_attrib_location_allowed(YYLTYPE *locp, + const ir_variable *var) + { + if (!this->has_explicit_attrib_location()) { + const char *const requirement = this->es_shader + ? "GLSL ES 3.00" + : "GL_ARB_explicit_attrib_location extension or GLSL 3.30"; + + _mesa_glsl_error(locp, this, "%s explicit location requires %s", + mode_string(var), requirement); + return false; + } + + return true; + } + + bool check_separate_shader_objects_allowed(YYLTYPE *locp, + const ir_variable *var) + { + if (!this->has_separate_shader_objects()) { + const char *const requirement = this->es_shader + ? "GL_EXT_separate_shader_objects extension or GLSL ES 3.10" + : "GL_ARB_separate_shader_objects extension or GLSL 4.20"; + + _mesa_glsl_error(locp, this, "%s explicit location requires %s", + mode_string(var), requirement); + return false; + } + + return true; + } + + bool check_explicit_uniform_location_allowed(YYLTYPE *locp, + const ir_variable *) + { + if (!this->has_explicit_attrib_location() || + !this->has_explicit_uniform_location()) { + const char *const requirement = this->es_shader + ? "GLSL ES 3.10" + : "GL_ARB_explicit_uniform_location and either " + "GL_ARB_explicit_attrib_location or GLSL 3.30."; + + _mesa_glsl_error(locp, this, + "uniform explicit location requires %s", + requirement); + return false; + } + + return true; + } + + bool has_atomic_counters() const + { + return ARB_shader_atomic_counters_enable || is_version(420, 310); + } + + bool has_enhanced_layouts() const + { + return ARB_enhanced_layouts_enable || is_version(440, 0); + } + + bool has_explicit_attrib_stream() const + { + return ARB_gpu_shader5_enable || is_version(400, 0); + } + + bool has_explicit_attrib_location() const + { + return ARB_explicit_attrib_location_enable || is_version(330, 300); + } + + bool has_explicit_uniform_location() const + { + return ARB_explicit_uniform_location_enable || is_version(430, 310); + } + + bool has_uniform_buffer_objects() const + { + return ARB_uniform_buffer_object_enable || is_version(140, 300); + } + + bool has_shader_storage_buffer_objects() const + { + return ARB_shader_storage_buffer_object_enable || is_version(430, 310); + } + + bool has_separate_shader_objects() const + { + return ARB_separate_shader_objects_enable || is_version(410, 310) + || EXT_separate_shader_objects_enable; + } + + bool has_double() const + { + return ARB_gpu_shader_fp64_enable || is_version(400, 0); + } + + bool has_420pack() const + { + return ARB_shading_language_420pack_enable || is_version(420, 0); + } + + bool has_420pack_or_es31() const + { + return ARB_shading_language_420pack_enable || is_version(420, 310); + } + + bool has_compute_shader() const + { + return ARB_compute_shader_enable || is_version(430, 310); + } + + bool has_geometry_shader() const + { + return OES_geometry_shader_enable || is_version(150, 320); + } + + void process_version_directive(YYLTYPE *locp, int version, + const char *ident); + + struct gl_context *const ctx; + void *scanner; + exec_list translation_unit; + glsl_symbol_table *symbols; + + unsigned num_supported_versions; + struct { + unsigned ver; + bool es; + } supported_versions[15]; + + bool es_shader; + unsigned language_version; + unsigned forced_language_version; + gl_shader_stage stage; + + /** + * Number of nested struct_specifier levels + * + * Outside a struct_specifier, this is zero. + */ + unsigned struct_specifier_depth; + + /** + * Default uniform layout qualifiers tracked during parsing. + * Currently affects uniform blocks and uniform buffer variables in + * those blocks. + */ + struct ast_type_qualifier *default_uniform_qualifier; + + /** + * Default shader storage layout qualifiers tracked during parsing. + * Currently affects shader storage blocks and shader storage buffer + * variables in those blocks. + */ + struct ast_type_qualifier *default_shader_storage_qualifier; + + /** + * Variables to track different cases if a fragment shader redeclares + * built-in variable gl_FragCoord. + * + * Note: These values are computed at ast_to_hir time rather than at parse + * time. + */ + bool fs_redeclares_gl_fragcoord; + bool fs_origin_upper_left; + bool fs_pixel_center_integer; + bool fs_redeclares_gl_fragcoord_with_no_layout_qualifiers; + + /** + * True if a geometry shader input primitive type or tessellation control + * output vertices were specified using a layout directive. + * + * Note: these values are computed at ast_to_hir time rather than at parse + * time. + */ + bool gs_input_prim_type_specified; + bool tcs_output_vertices_specified; + + /** + * Input layout qualifiers from GLSL 1.50 (geometry shader controls), + * and GLSL 4.00 (tessellation evaluation shader) + */ + struct ast_type_qualifier *in_qualifier; + + /** + * True if a compute shader input local size was specified using a layout + * directive. + * + * Note: this value is computed at ast_to_hir time rather than at parse + * time. + */ + bool cs_input_local_size_specified; + + /** + * If cs_input_local_size_specified is true, the local size that was + * specified. Otherwise ignored. + */ + unsigned cs_input_local_size[3]; + + /** + * Output layout qualifiers from GLSL 1.50 (geometry shader controls), + * and GLSL 4.00 (tessellation control shader). + */ + struct ast_type_qualifier *out_qualifier; + + /** + * Printable list of GLSL versions supported by the current context + * + * \note + * This string should probably be generated per-context instead of per + * invokation of the compiler. This should be changed when the method of + * tracking supported GLSL versions changes. + */ + const char *supported_version_string; + + /** + * Implementation defined limits that affect built-in variables, etc. + * + * \sa struct gl_constants (in mtypes.h) + */ + struct { + /* 1.10 */ + unsigned MaxLights; + unsigned MaxClipPlanes; + unsigned MaxTextureUnits; + unsigned MaxTextureCoords; + unsigned MaxVertexAttribs; + unsigned MaxVertexUniformComponents; + unsigned MaxVertexTextureImageUnits; + unsigned MaxCombinedTextureImageUnits; + unsigned MaxTextureImageUnits; + unsigned MaxFragmentUniformComponents; + + /* ARB_draw_buffers */ + unsigned MaxDrawBuffers; + + /* ARB_blend_func_extended */ + unsigned MaxDualSourceDrawBuffers; + + /* 3.00 ES */ + int MinProgramTexelOffset; + int MaxProgramTexelOffset; + + /* 1.50 */ + unsigned MaxVertexOutputComponents; + unsigned MaxGeometryInputComponents; + unsigned MaxGeometryOutputComponents; + unsigned MaxFragmentInputComponents; + unsigned MaxGeometryTextureImageUnits; + unsigned MaxGeometryOutputVertices; + unsigned MaxGeometryTotalOutputComponents; + unsigned MaxGeometryUniformComponents; + + /* ARB_shader_atomic_counters */ + unsigned MaxVertexAtomicCounters; + unsigned MaxTessControlAtomicCounters; + unsigned MaxTessEvaluationAtomicCounters; + unsigned MaxGeometryAtomicCounters; + unsigned MaxFragmentAtomicCounters; + unsigned MaxCombinedAtomicCounters; + unsigned MaxAtomicBufferBindings; + + /* These are also atomic counter related, but they weren't added to + * until atomic counters were added to core in GLSL 4.20 and GLSL ES + * 3.10. + */ + unsigned MaxVertexAtomicCounterBuffers; + unsigned MaxTessControlAtomicCounterBuffers; + unsigned MaxTessEvaluationAtomicCounterBuffers; + unsigned MaxGeometryAtomicCounterBuffers; + unsigned MaxFragmentAtomicCounterBuffers; + unsigned MaxCombinedAtomicCounterBuffers; + unsigned MaxAtomicCounterBufferSize; + + /* ARB_compute_shader */ + unsigned MaxComputeWorkGroupCount[3]; + unsigned MaxComputeWorkGroupSize[3]; + + /* ARB_shader_image_load_store */ + unsigned MaxImageUnits; + unsigned MaxCombinedShaderOutputResources; + unsigned MaxImageSamples; + unsigned MaxVertexImageUniforms; + unsigned MaxTessControlImageUniforms; + unsigned MaxTessEvaluationImageUniforms; + unsigned MaxGeometryImageUniforms; + unsigned MaxFragmentImageUniforms; + unsigned MaxCombinedImageUniforms; + + /* ARB_viewport_array */ + unsigned MaxViewports; + + /* ARB_tessellation_shader */ + unsigned MaxPatchVertices; + unsigned MaxTessGenLevel; + unsigned MaxTessControlInputComponents; + unsigned MaxTessControlOutputComponents; + unsigned MaxTessControlTextureImageUnits; + unsigned MaxTessEvaluationInputComponents; + unsigned MaxTessEvaluationOutputComponents; + unsigned MaxTessEvaluationTextureImageUnits; + unsigned MaxTessPatchComponents; + unsigned MaxTessControlTotalOutputComponents; + unsigned MaxTessControlUniformComponents; + unsigned MaxTessEvaluationUniformComponents; + } Const; + + /** + * During AST to IR conversion, pointer to current IR function + * + * Will be \c NULL whenever the AST to IR conversion is not inside a + * function definition. + */ + class ir_function_signature *current_function; + + /** + * During AST to IR conversion, pointer to the toplevel IR + * instruction list being generated. + */ + exec_list *toplevel_ir; + + /** Have we found a return statement in this function? */ + bool found_return; + + /** Was there an error during compilation? */ + bool error; + + /** + * Are all shader inputs / outputs invariant? + * + * This is set when the 'STDGL invariant(all)' pragma is used. + */ + bool all_invariant; + + /** Loop or switch statement containing the current instructions. */ + class ast_iteration_statement *loop_nesting_ast; + + struct glsl_switch_state switch_state; + + /** List of structures defined in user code. */ + const glsl_type **user_structures; + unsigned num_user_structures; + + char *info_log; + + /** + * \name Enable bits for GLSL extensions + */ + /*@{*/ + /* ARB extensions go here, sorted alphabetically. + */ + bool ARB_arrays_of_arrays_enable; + bool ARB_arrays_of_arrays_warn; + bool ARB_compute_shader_enable; + bool ARB_compute_shader_warn; + bool ARB_conservative_depth_enable; + bool ARB_conservative_depth_warn; + bool ARB_derivative_control_enable; + bool ARB_derivative_control_warn; + bool ARB_draw_buffers_enable; + bool ARB_draw_buffers_warn; + bool ARB_draw_instanced_enable; + bool ARB_draw_instanced_warn; + bool ARB_enhanced_layouts_enable; + bool ARB_enhanced_layouts_warn; + bool ARB_explicit_attrib_location_enable; + bool ARB_explicit_attrib_location_warn; + bool ARB_explicit_uniform_location_enable; + bool ARB_explicit_uniform_location_warn; + bool ARB_fragment_coord_conventions_enable; + bool ARB_fragment_coord_conventions_warn; + bool ARB_fragment_layer_viewport_enable; + bool ARB_fragment_layer_viewport_warn; + bool ARB_gpu_shader5_enable; + bool ARB_gpu_shader5_warn; + bool ARB_gpu_shader_fp64_enable; + bool ARB_gpu_shader_fp64_warn; + bool ARB_sample_shading_enable; + bool ARB_sample_shading_warn; + bool ARB_separate_shader_objects_enable; + bool ARB_separate_shader_objects_warn; + bool ARB_shader_atomic_counters_enable; + bool ARB_shader_atomic_counters_warn; + bool ARB_shader_bit_encoding_enable; + bool ARB_shader_bit_encoding_warn; + bool ARB_shader_clock_enable; + bool ARB_shader_clock_warn; + bool ARB_shader_draw_parameters_enable; + bool ARB_shader_draw_parameters_warn; + bool ARB_shader_image_load_store_enable; + bool ARB_shader_image_load_store_warn; + bool ARB_shader_image_size_enable; + bool ARB_shader_image_size_warn; + bool ARB_shader_precision_enable; + bool ARB_shader_precision_warn; + bool ARB_shader_stencil_export_enable; + bool ARB_shader_stencil_export_warn; + bool ARB_shader_storage_buffer_object_enable; + bool ARB_shader_storage_buffer_object_warn; + bool ARB_shader_subroutine_enable; + bool ARB_shader_subroutine_warn; + bool ARB_shader_texture_image_samples_enable; + bool ARB_shader_texture_image_samples_warn; + bool ARB_shader_texture_lod_enable; + bool ARB_shader_texture_lod_warn; + bool ARB_shading_language_420pack_enable; + bool ARB_shading_language_420pack_warn; + bool ARB_shading_language_packing_enable; + bool ARB_shading_language_packing_warn; + bool ARB_tessellation_shader_enable; + bool ARB_tessellation_shader_warn; + bool ARB_texture_cube_map_array_enable; + bool ARB_texture_cube_map_array_warn; + bool ARB_texture_gather_enable; + bool ARB_texture_gather_warn; + bool ARB_texture_multisample_enable; + bool ARB_texture_multisample_warn; + bool ARB_texture_query_levels_enable; + bool ARB_texture_query_levels_warn; + bool ARB_texture_query_lod_enable; + bool ARB_texture_query_lod_warn; + bool ARB_texture_rectangle_enable; + bool ARB_texture_rectangle_warn; + bool ARB_uniform_buffer_object_enable; + bool ARB_uniform_buffer_object_warn; + bool ARB_vertex_attrib_64bit_enable; + bool ARB_vertex_attrib_64bit_warn; + bool ARB_viewport_array_enable; + bool ARB_viewport_array_warn; + + /* KHR extensions go here, sorted alphabetically. + */ + + /* OES extensions go here, sorted alphabetically. + */ + bool OES_EGL_image_external_enable; + bool OES_EGL_image_external_warn; + bool OES_geometry_shader_enable; + bool OES_geometry_shader_warn; + bool OES_standard_derivatives_enable; + bool OES_standard_derivatives_warn; + bool OES_texture_3D_enable; + bool OES_texture_3D_warn; + bool OES_texture_storage_multisample_2d_array_enable; + bool OES_texture_storage_multisample_2d_array_warn; + + /* All other extensions go here, sorted alphabetically. + */ + bool AMD_conservative_depth_enable; + bool AMD_conservative_depth_warn; + bool AMD_shader_stencil_export_enable; + bool AMD_shader_stencil_export_warn; + bool AMD_shader_trinary_minmax_enable; + bool AMD_shader_trinary_minmax_warn; + bool AMD_vertex_shader_layer_enable; + bool AMD_vertex_shader_layer_warn; + bool AMD_vertex_shader_viewport_index_enable; + bool AMD_vertex_shader_viewport_index_warn; + bool EXT_blend_func_extended_enable; + bool EXT_blend_func_extended_warn; + bool EXT_draw_buffers_enable; + bool EXT_draw_buffers_warn; + bool EXT_separate_shader_objects_enable; + bool EXT_separate_shader_objects_warn; + bool EXT_shader_integer_mix_enable; + bool EXT_shader_integer_mix_warn; + bool EXT_shader_samples_identical_enable; + bool EXT_shader_samples_identical_warn; + bool EXT_texture_array_enable; + bool EXT_texture_array_warn; + /*@}*/ + + /** Extensions supported by the OpenGL implementation. */ + const struct gl_extensions *extensions; + + bool uses_builtin_functions; + bool fs_uses_gl_fragcoord; + + /** + * For geometry shaders, size of the most recently seen input declaration + * that was a sized array, or 0 if no sized input array declarations have + * been seen. + * + * Unused for other shader types. + */ + unsigned gs_input_size; + + bool fs_early_fragment_tests; + + /** + * For tessellation control shaders, size of the most recently seen output + * declaration that was a sized array, or 0 if no sized output array + * declarations have been seen. + * + * Unused for other shader types. + */ + unsigned tcs_output_size; + + /** Atomic counter offsets by binding */ + unsigned atomic_counter_offsets[MAX_COMBINED_ATOMIC_BUFFERS]; + + bool allow_extension_directive_midshader; + + /** + * Known subroutine type declarations. + */ + int num_subroutine_types; + ir_function **subroutine_types; + + /** + * Functions that are associated with + * subroutine types. + */ + int num_subroutines; + ir_function **subroutines; + + /** + * field selection temporary parser storage - + * did the parser just parse a dot. + */ + bool is_field; +}; + +# define YYLLOC_DEFAULT(Current, Rhs, N) \ +do { \ + if (N) \ + { \ + (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC(Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC(Rhs, N).last_column; \ + } \ + else \ + { \ + (Current).first_line = (Current).last_line = \ + YYRHSLOC(Rhs, 0).last_line; \ + (Current).first_column = (Current).last_column = \ + YYRHSLOC(Rhs, 0).last_column; \ + } \ + (Current).source = 0; \ +} while (0) + +/** + * Emit a warning to the shader log + * + * \sa _mesa_glsl_error + */ +extern void _mesa_glsl_warning(const YYLTYPE *locp, + _mesa_glsl_parse_state *state, + const char *fmt, ...); + +extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state, + const char *string); + +extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state); + +union YYSTYPE; +extern int _mesa_glsl_lexer_lex(union YYSTYPE *yylval, YYLTYPE *yylloc, + void *scanner); + +extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *); + +/** + * Process elements of the #extension directive + * + * \return + * If \c name and \c behavior are valid, \c true is returned. Otherwise + * \c false is returned. + */ +extern bool _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp, + const char *behavior, + YYLTYPE *behavior_locp, + _mesa_glsl_parse_state *state); + +#endif /* __cplusplus */ + + +/* + * These definitions apply to C and C++ + */ +#ifdef __cplusplus +extern "C" { +#endif + +extern int glcpp_preprocess(void *ctx, const char **shader, char **info_log, + const struct gl_extensions *extensions, struct gl_context *gl_ctx); + +extern void _mesa_destroy_shader_compiler(void); +extern void _mesa_destroy_shader_compiler_caches(void); + +#ifdef __cplusplus +} +#endif + + +#endif /* GLSL_PARSER_EXTRAS_H */ |