2 * Copyright © 2010 Intel Corporation
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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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,
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25 #ifndef GLSL_PARSER_EXTRAS_H
26 #define GLSL_PARSER_EXTRAS_H
29 #include "glsl_symbol_table.h"
31 enum _mesa_glsl_parser_targets
{
38 struct __GLcontextRec
;
40 struct _mesa_glsl_parse_state
{
41 _mesa_glsl_parse_state(struct __GLcontextRec
*ctx
, GLenum target
,
44 /* Callers of this talloc-based new need not call delete. It's
45 * easier to just talloc_free 'ctx' (or any of its ancestors). */
46 static void* operator new(size_t size
, void *ctx
)
48 void *mem
= talloc_zero_size(ctx
, size
);
54 /* If the user *does* call delete, that's OK, we will just
55 * talloc_free in that case. */
56 static void operator delete(void *mem
)
62 exec_list translation_unit
;
63 glsl_symbol_table
*symbols
;
65 unsigned language_version
;
66 enum _mesa_glsl_parser_targets target
;
69 * Implementation defined limits that affect built-in variables, etc.
71 * \sa struct gl_constants (in mtypes.h)
76 unsigned MaxClipPlanes
;
77 unsigned MaxTextureUnits
;
78 unsigned MaxTextureCoords
;
79 unsigned MaxVertexAttribs
;
80 unsigned MaxVertexUniformComponents
;
81 unsigned MaxVaryingFloats
;
82 unsigned MaxVertexTextureImageUnits
;
83 unsigned MaxCombinedTextureImageUnits
;
84 unsigned MaxTextureImageUnits
;
85 unsigned MaxFragmentUniformComponents
;
87 /* ARB_draw_buffers */
88 unsigned MaxDrawBuffers
;
92 * During AST to IR conversion, pointer to current IR function
94 * Will be \c NULL whenever the AST to IR conversion is not inside a
95 * function definition.
97 class ir_function_signature
*current_function
;
99 /** Have we found a return statement in this function? */
102 /** Was there an error during compilation? */
105 /** Loop or switch statement containing the current instructions. */
106 class ir_instruction
*loop_or_switch_nesting
;
107 class ast_iteration_statement
*loop_or_switch_nesting_ast
;
109 /** List of structures defined in user code. */
110 const glsl_type
**user_structures
;
111 unsigned num_user_structures
;
116 * \name Enable bits for GLSL extensions
119 unsigned ARB_draw_buffers_enable
:1;
120 unsigned ARB_draw_buffers_warn
:1;
121 unsigned ARB_fragment_coord_conventions_enable
:1;
122 unsigned ARB_fragment_coord_conventions_warn
:1;
123 unsigned ARB_texture_rectangle_enable
:1;
124 unsigned ARB_texture_rectangle_warn
:1;
125 unsigned EXT_texture_array_enable
:1;
126 unsigned EXT_texture_array_warn
:1;
129 /** Extensions supported by the OpenGL implementation. */
130 const struct gl_extensions
*extensions
;
132 /** Shaders containing built-in functions that are used for linking. */
133 struct gl_shader
*builtins_to_link
[16];
134 unsigned num_builtins_to_link
;
137 typedef struct YYLTYPE
{
144 # define YYLTYPE_IS_DECLARED 1
145 # define YYLTYPE_IS_TRIVIAL 1
147 # define YYLLOC_DEFAULT(Current, Rhs, N) \
151 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
152 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
153 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
154 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
158 (Current).first_line = (Current).last_line = \
159 YYRHSLOC(Rhs, 0).last_line; \
160 (Current).first_column = (Current).last_column = \
161 YYRHSLOC(Rhs, 0).last_column; \
163 (Current).source = 0; \
166 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
167 const char *fmt
, ...);
170 * Emit a warning to the shader log
172 * \sa _mesa_glsl_error
174 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
175 _mesa_glsl_parse_state
*state
,
176 const char *fmt
, ...);
179 extern int preprocess(void *ctx
, const char **shader
, char **info_log
,
180 const struct gl_extensions
*extensions
);
182 extern void _mesa_destroy_shader_compiler();
183 extern void _mesa_destroy_shader_compiler_caches();
186 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
189 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
192 extern int _mesa_glsl_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
195 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
198 * Process elements of the #extension directive
201 * If \c name and \c behavior are valid, \c true is returned. Otherwise
202 * \c false is returned.
204 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
205 const char *behavior
,
206 YYLTYPE
*behavior_locp
,
207 _mesa_glsl_parse_state
*state
);
210 * Get the textual name of the specified shader target
213 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
215 #endif /* GLSL_PARSER_EXTRAS_H */