/* * 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 #include "glsl_symbol_table.h" enum _mesa_glsl_parser_targets { vertex_shader, geometry_shader, fragment_shader }; struct gl_context; struct glsl_switch_state { /** Temporary variables needed for switch statement. */ ir_variable *test_var; ir_variable *is_fallthru_var; ir_variable *is_break_var; class ast_switch_statement *switch_nesting_ast; /** 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, ... }; struct _mesa_glsl_parse_state { _mesa_glsl_parse_state(struct gl_context *_ctx, GLenum target, void *mem_ctx); /* Callers of this ralloc-based new need not call delete. It's * easier to just ralloc_free 'ctx' (or any of its ancestors). */ static void* operator new(size_t size, void *ctx) { void *mem = rzalloc_size(ctx, size); assert(mem != NULL); return mem; } /* If the user *does* call delete, that's OK, we will just * ralloc_free in that case. */ static void operator delete(void *mem) { ralloc_free(mem); } struct gl_context *const ctx; void *scanner; exec_list translation_unit; glsl_symbol_table *symbols; unsigned num_uniform_blocks; unsigned uniform_block_array_size; struct gl_uniform_block *uniform_blocks; bool es_shader; unsigned language_version; const char *version_string; enum _mesa_glsl_parser_targets target; /** * 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 MaxVaryingFloats; unsigned MaxVertexTextureImageUnits; unsigned MaxCombinedTextureImageUnits; unsigned MaxTextureImageUnits; unsigned MaxFragmentUniformComponents; /* ARB_draw_buffers */ unsigned MaxDrawBuffers; } 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 */ /*@{*/ bool ARB_draw_buffers_enable; bool ARB_draw_buffers_warn; bool ARB_draw_instanced_enable; bool ARB_draw_instanced_warn; bool ARB_explicit_attrib_location_enable; bool ARB_explicit_attrib_location_warn; bool ARB_fragment_coord_conventions_enable; bool ARB_fragment_coord_conventions_warn; bool ARB_texture_rectangle_enable; bool ARB_texture_rectangle_warn; bool EXT_texture_array_enable; bool EXT_texture_array_warn; bool ARB_shader_texture_lod_enable; bool ARB_shader_texture_lod_warn; bool ARB_shader_stencil_export_enable; bool ARB_shader_stencil_export_warn; bool AMD_conservative_depth_enable; bool AMD_conservative_depth_warn; bool ARB_conservative_depth_enable; bool ARB_conservative_depth_warn; bool AMD_shader_stencil_export_enable; bool AMD_shader_stencil_export_warn; bool OES_texture_3D_enable; bool OES_texture_3D_warn; bool OES_EGL_image_external_enable; bool OES_EGL_image_external_warn; bool ARB_shader_bit_encoding_enable; bool ARB_shader_bit_encoding_warn; bool ARB_uniform_buffer_object_enable; bool ARB_uniform_buffer_object_warn; /*@}*/ /** Extensions supported by the OpenGL implementation. */ const struct gl_extensions *extensions; /** Shaders containing built-in functions that are used for linking. */ struct gl_shader *builtins_to_link[16]; unsigned num_builtins_to_link; }; 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 # 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) extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state, const char *fmt, ...); /** * 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_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); /** * Get the textual name of the specified shader target */ extern const char * _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target); #endif /* __cplusplus */ /* * These definitions apply to C and C++ */ #ifdef __cplusplus extern "C" { #endif extern int preprocess(void *ctx, const char **shader, char **info_log, const struct gl_extensions *extensions, int api); extern void _mesa_destroy_shader_compiler(void); extern void _mesa_destroy_shader_compiler_caches(void); #ifdef __cplusplus } #endif #endif /* GLSL_PARSER_EXTRAS_H */