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Diffstat (limited to 'src/glsl/glsl_parser_extras.h')
| -rw-r--r-- | src/glsl/glsl_parser_extras.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h new file mode 100644 index 0000000000..3b53ba07f6 --- /dev/null +++ b/src/glsl/glsl_parser_extras.h @@ -0,0 +1,214 @@ +/* + * 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 + +#include <cstdlib> +#include "glsl_symbol_table.h" + +enum _mesa_glsl_parser_targets { + vertex_shader, + geometry_shader, + fragment_shader, + ir_shader +}; + +struct __GLcontextRec; + +struct _mesa_glsl_parse_state { + _mesa_glsl_parse_state(struct __GLcontextRec *ctx, GLenum target, + void *mem_ctx); + + /* Callers of this talloc-based new need not call delete. It's + * easier to just talloc_free 'ctx' (or any of its ancestors). */ + static void* operator new(size_t size, void *ctx) + { + void *mem = talloc_zero_size(ctx, size); + assert(mem != NULL); + + return mem; + } + + /* If the user *does* call delete, that's OK, we will just + * talloc_free in that case. */ + static void operator delete(void *mem) + { + talloc_free(mem); + } + + void *scanner; + exec_list translation_unit; + glsl_symbol_table *symbols; + + unsigned language_version; + enum _mesa_glsl_parser_targets target; + + /** + * 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; + + /** Have we found a return statement in this function? */ + bool found_return; + + /** Was there an error during compilation? */ + bool error; + + /** Loop or switch statement containing the current instructions. */ + class ir_instruction *loop_or_switch_nesting; + class ast_iteration_statement *loop_or_switch_nesting_ast; + + /** 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 + */ + /*@{*/ + unsigned ARB_draw_buffers_enable:1; + unsigned ARB_draw_buffers_warn:1; + unsigned ARB_fragment_coord_conventions_enable:1; + unsigned ARB_fragment_coord_conventions_warn:1; + unsigned ARB_texture_rectangle_enable:1; + unsigned ARB_texture_rectangle_warn:1; + unsigned EXT_texture_array_enable:1; + unsigned EXT_texture_array_warn:1; + /*@}*/ + + /** 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 "C" { +extern int preprocess(void *ctx, const char **shader, char **info_log, + const struct gl_extensions *extensions); +} + +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); + +void do_ir_to_mesa(exec_list *instructions); + +#endif /* GLSL_PARSER_EXTRAS_H */ |