2 * Copyright © 2010 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.
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"
37 enum _mesa_glsl_parser_targets
{
46 struct _mesa_glsl_parse_state
{
47 _mesa_glsl_parse_state(struct gl_context
*ctx
, GLenum target
,
50 /* Callers of this talloc-based new need not call delete. It's
51 * easier to just talloc_free 'ctx' (or any of its ancestors). */
52 static void* operator new(size_t size
, void *ctx
)
54 void *mem
= talloc_zero_size(ctx
, size
);
60 /* If the user *does* call delete, that's OK, we will just
61 * talloc_free in that case. */
62 static void operator delete(void *mem
)
68 exec_list translation_unit
;
69 glsl_symbol_table
*symbols
;
72 unsigned language_version
;
73 enum _mesa_glsl_parser_targets target
;
76 * Implementation defined limits that affect built-in variables, etc.
78 * \sa struct gl_constants (in mtypes.h)
83 unsigned MaxClipPlanes
;
84 unsigned MaxTextureUnits
;
85 unsigned MaxTextureCoords
;
86 unsigned MaxVertexAttribs
;
87 unsigned MaxVertexUniformComponents
;
88 unsigned MaxVaryingFloats
;
89 unsigned MaxVertexTextureImageUnits
;
90 unsigned MaxCombinedTextureImageUnits
;
91 unsigned MaxTextureImageUnits
;
92 unsigned MaxFragmentUniformComponents
;
94 /* ARB_draw_buffers */
95 unsigned MaxDrawBuffers
;
99 * During AST to IR conversion, pointer to current IR function
101 * Will be \c NULL whenever the AST to IR conversion is not inside a
102 * function definition.
104 class ir_function_signature
*current_function
;
106 /** Have we found a return statement in this function? */
109 /** Was there an error during compilation? */
112 /** Loop or switch statement containing the current instructions. */
113 class ir_instruction
*loop_or_switch_nesting
;
114 class ast_iteration_statement
*loop_or_switch_nesting_ast
;
116 /** List of structures defined in user code. */
117 const glsl_type
**user_structures
;
118 unsigned num_user_structures
;
123 * \name Enable bits for GLSL extensions
126 unsigned ARB_draw_buffers_enable
:1;
127 unsigned ARB_draw_buffers_warn
:1;
128 unsigned ARB_explicit_attrib_location_enable
:1;
129 unsigned ARB_explicit_attrib_location_warn
:1;
130 unsigned ARB_fragment_coord_conventions_enable
:1;
131 unsigned ARB_fragment_coord_conventions_warn
:1;
132 unsigned ARB_texture_rectangle_enable
:1;
133 unsigned ARB_texture_rectangle_warn
:1;
134 unsigned EXT_texture_array_enable
:1;
135 unsigned EXT_texture_array_warn
:1;
136 unsigned ARB_shader_stencil_export_enable
:1;
137 unsigned ARB_shader_stencil_export_warn
:1;
140 /** Extensions supported by the OpenGL implementation. */
141 const struct gl_extensions
*extensions
;
143 /** Shaders containing built-in functions that are used for linking. */
144 struct gl_shader
*builtins_to_link
[16];
145 unsigned num_builtins_to_link
;
148 typedef struct YYLTYPE
{
155 # define YYLTYPE_IS_DECLARED 1
156 # define YYLTYPE_IS_TRIVIAL 1
158 # define YYLLOC_DEFAULT(Current, Rhs, N) \
162 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
163 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
164 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
165 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
169 (Current).first_line = (Current).last_line = \
170 YYRHSLOC(Rhs, 0).last_line; \
171 (Current).first_column = (Current).last_column = \
172 YYRHSLOC(Rhs, 0).last_column; \
174 (Current).source = 0; \
177 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
178 const char *fmt
, ...);
181 * Emit a warning to the shader log
183 * \sa _mesa_glsl_error
185 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
186 _mesa_glsl_parse_state
*state
,
187 const char *fmt
, ...);
189 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
192 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
195 extern int _mesa_glsl_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
198 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
201 * Process elements of the #extension directive
204 * If \c name and \c behavior are valid, \c true is returned. Otherwise
205 * \c false is returned.
207 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
208 const char *behavior
,
209 YYLTYPE
*behavior_locp
,
210 _mesa_glsl_parse_state
*state
);
213 * Get the textual name of the specified shader target
216 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
219 #endif /* __cplusplus */
223 * These definitions apply to C and C++
229 extern int preprocess(void *ctx
, const char **shader
, char **info_log
,
230 const struct gl_extensions
*extensions
, int api
);
232 extern void _mesa_destroy_shader_compiler();
233 extern void _mesa_destroy_shader_compiler_caches();
240 #endif /* GLSL_PARSER_EXTRAS_H */