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
{
45 struct _mesa_glsl_parse_state
{
46 _mesa_glsl_parse_state(struct gl_context
*ctx
, GLenum target
,
49 /* Callers of this talloc-based new need not call delete. It's
50 * easier to just talloc_free 'ctx' (or any of its ancestors). */
51 static void* operator new(size_t size
, void *ctx
)
53 void *mem
= talloc_zero_size(ctx
, size
);
59 /* If the user *does* call delete, that's OK, we will just
60 * talloc_free in that case. */
61 static void operator delete(void *mem
)
67 exec_list translation_unit
;
68 glsl_symbol_table
*symbols
;
71 unsigned language_version
;
72 const char *version_string
;
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? */
113 * Are all shader inputs / outputs invariant?
115 * This is set when the 'STDGL invariant(all)' pragma is used.
119 /** Loop or switch statement containing the current instructions. */
120 class ir_instruction
*loop_or_switch_nesting
;
121 class ast_iteration_statement
*loop_or_switch_nesting_ast
;
123 /** List of structures defined in user code. */
124 const glsl_type
**user_structures
;
125 unsigned num_user_structures
;
130 * \name Enable bits for GLSL extensions
133 unsigned ARB_draw_buffers_enable
:1;
134 unsigned ARB_draw_buffers_warn
:1;
135 unsigned ARB_explicit_attrib_location_enable
:1;
136 unsigned ARB_explicit_attrib_location_warn
:1;
137 unsigned ARB_fragment_coord_conventions_enable
:1;
138 unsigned ARB_fragment_coord_conventions_warn
:1;
139 unsigned ARB_texture_rectangle_enable
:1;
140 unsigned ARB_texture_rectangle_warn
:1;
141 unsigned EXT_texture_array_enable
:1;
142 unsigned EXT_texture_array_warn
:1;
143 unsigned ARB_shader_stencil_export_enable
:1;
144 unsigned ARB_shader_stencil_export_warn
:1;
147 /** Extensions supported by the OpenGL implementation. */
148 const struct gl_extensions
*extensions
;
150 /** Shaders containing built-in functions that are used for linking. */
151 struct gl_shader
*builtins_to_link
[16];
152 unsigned num_builtins_to_link
;
155 typedef struct YYLTYPE
{
162 # define YYLTYPE_IS_DECLARED 1
163 # define YYLTYPE_IS_TRIVIAL 1
165 # define YYLLOC_DEFAULT(Current, Rhs, N) \
169 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
170 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
171 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
172 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
176 (Current).first_line = (Current).last_line = \
177 YYRHSLOC(Rhs, 0).last_line; \
178 (Current).first_column = (Current).last_column = \
179 YYRHSLOC(Rhs, 0).last_column; \
181 (Current).source = 0; \
184 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
185 const char *fmt
, ...);
188 * Emit a warning to the shader log
190 * \sa _mesa_glsl_error
192 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
193 _mesa_glsl_parse_state
*state
,
194 const char *fmt
, ...);
196 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
199 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
202 extern int _mesa_glsl_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
205 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
208 * Process elements of the #extension directive
211 * If \c name and \c behavior are valid, \c true is returned. Otherwise
212 * \c false is returned.
214 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
215 const char *behavior
,
216 YYLTYPE
*behavior_locp
,
217 _mesa_glsl_parse_state
*state
);
220 * Get the textual name of the specified shader target
223 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
226 #endif /* __cplusplus */
230 * These definitions apply to C and C++
236 extern int preprocess(void *ctx
, const char **shader
, char **info_log
,
237 const struct gl_extensions
*extensions
, int api
);
239 extern void _mesa_destroy_shader_compiler();
240 extern void _mesa_destroy_shader_compiler_caches();
247 #endif /* GLSL_PARSER_EXTRAS_H */