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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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 * Most of the definitions here only apply to C++
35 #include "glsl_symbol_table.h"
37 enum _mesa_glsl_parser_targets
{
45 struct glsl_switch_state
{
46 /** Temporary variables needed for switch statement. */
47 ir_variable
*test_var
;
48 ir_variable
*is_fallthru_var
;
49 ir_variable
*is_break_var
;
50 class ast_switch_statement
*switch_nesting_ast
;
52 /** Table of constant values already used in case labels */
53 struct hash_table
*labels_ht
;
54 class ast_case_label
*previous_default
;
56 bool is_switch_innermost
; // if switch stmt is closest to break, ...
60 glsl_compute_version_string(void *mem_ctx
, bool is_es
, unsigned version
);
62 typedef struct YYLTYPE
{
69 # define YYLTYPE_IS_DECLARED 1
70 # define YYLTYPE_IS_TRIVIAL 1
72 struct _mesa_glsl_parse_state
{
73 _mesa_glsl_parse_state(struct gl_context
*_ctx
, GLenum target
,
76 DECLARE_RALLOC_CXX_OPERATORS(_mesa_glsl_parse_state
);
79 * Generate a string representing the GLSL version currently being compiled
80 * (useful for error messages).
82 const char *get_version_string()
84 return glsl_compute_version_string(this, this->es_shader
,
85 this->language_version
);
89 * Determine whether the current GLSL version is sufficiently high to
90 * support a certain feature.
92 * \param required_glsl_version is the desktop GLSL version that is
93 * required to support the feature, or 0 if no version of desktop GLSL
94 * supports the feature.
96 * \param required_glsl_es_version is the GLSL ES version that is required
97 * to support the feature, or 0 if no version of GLSL ES suports the
100 bool is_version(unsigned required_glsl_version
,
101 unsigned required_glsl_es_version
) const
103 unsigned required_version
= this->es_shader
?
104 required_glsl_es_version
: required_glsl_version
;
105 return required_version
!= 0
106 && this->language_version
>= required_version
;
109 bool check_version(unsigned required_glsl_version
,
110 unsigned required_glsl_es_version
,
111 YYLTYPE
*locp
, const char *fmt
, ...) PRINTFLIKE(5, 6);
113 bool check_precision_qualifiers_allowed(YYLTYPE
*locp
)
115 return check_version(130, 100, locp
,
116 "precision qualifiers are forbidden");
119 bool check_bitwise_operations_allowed(YYLTYPE
*locp
)
121 return check_version(130, 300, locp
, "bit-wise operations are forbidden");
124 bool has_explicit_attrib_location() const
126 return ARB_explicit_attrib_location_enable
|| is_version(330, 300);
129 bool has_uniform_buffer_objects() const
131 return ARB_uniform_buffer_object_enable
|| is_version(140, 300);
134 void process_version_directive(YYLTYPE
*locp
, int version
,
137 struct gl_context
*const ctx
;
139 exec_list translation_unit
;
140 glsl_symbol_table
*symbols
;
142 unsigned num_uniform_blocks
;
143 unsigned uniform_block_array_size
;
144 struct gl_uniform_block
*uniform_blocks
;
146 unsigned num_supported_versions
;
150 } supported_versions
[12];
153 unsigned language_version
;
154 enum _mesa_glsl_parser_targets target
;
157 * Number of nested struct_specifier levels
159 * Outside a struct_specifer, this is zero.
161 unsigned struct_specifier_depth
;
164 * Default uniform layout qualifiers tracked during parsing.
165 * Currently affects uniform blocks and uniform buffer variables in
168 struct ast_type_qualifier
*default_uniform_qualifier
;
171 * True if a geometry shader input primitive type was specified using a
174 * Note: this value is computed at ast_to_hir time rather than at parse
177 bool gs_input_prim_type_specified
;
180 * If gs_input_prim_type_specified is true, the primitive type that was
181 * specified. Otherwise ignored.
183 GLenum gs_input_prim_type
;
185 /** Output layout qualifiers from GLSL 1.50. (geometry shader controls)*/
186 struct ast_type_qualifier
*out_qualifier
;
189 * Printable list of GLSL versions supported by the current context
192 * This string should probably be generated per-context instead of per
193 * invokation of the compiler. This should be changed when the method of
194 * tracking supported GLSL versions changes.
196 const char *supported_version_string
;
199 * Implementation defined limits that affect built-in variables, etc.
201 * \sa struct gl_constants (in mtypes.h)
206 unsigned MaxClipPlanes
;
207 unsigned MaxTextureUnits
;
208 unsigned MaxTextureCoords
;
209 unsigned MaxVertexAttribs
;
210 unsigned MaxVertexUniformComponents
;
211 unsigned MaxVertexTextureImageUnits
;
212 unsigned MaxCombinedTextureImageUnits
;
213 unsigned MaxTextureImageUnits
;
214 unsigned MaxFragmentUniformComponents
;
216 /* ARB_draw_buffers */
217 unsigned MaxDrawBuffers
;
220 int MinProgramTexelOffset
;
221 int MaxProgramTexelOffset
;
225 * During AST to IR conversion, pointer to current IR function
227 * Will be \c NULL whenever the AST to IR conversion is not inside a
228 * function definition.
230 class ir_function_signature
*current_function
;
233 * During AST to IR conversion, pointer to the toplevel IR
234 * instruction list being generated.
236 exec_list
*toplevel_ir
;
238 /** Have we found a return statement in this function? */
241 /** Was there an error during compilation? */
245 * Are all shader inputs / outputs invariant?
247 * This is set when the 'STDGL invariant(all)' pragma is used.
251 /** Loop or switch statement containing the current instructions. */
252 class ast_iteration_statement
*loop_nesting_ast
;
254 struct glsl_switch_state switch_state
;
256 /** List of structures defined in user code. */
257 const glsl_type
**user_structures
;
258 unsigned num_user_structures
;
263 * \name Enable bits for GLSL extensions
266 bool ARB_draw_buffers_enable
;
267 bool ARB_draw_buffers_warn
;
268 bool ARB_draw_instanced_enable
;
269 bool ARB_draw_instanced_warn
;
270 bool ARB_explicit_attrib_location_enable
;
271 bool ARB_explicit_attrib_location_warn
;
272 bool ARB_fragment_coord_conventions_enable
;
273 bool ARB_fragment_coord_conventions_warn
;
274 bool ARB_texture_rectangle_enable
;
275 bool ARB_texture_rectangle_warn
;
276 bool ARB_texture_gather_enable
;
277 bool ARB_texture_gather_warn
;
278 bool EXT_texture_array_enable
;
279 bool EXT_texture_array_warn
;
280 bool ARB_shader_texture_lod_enable
;
281 bool ARB_shader_texture_lod_warn
;
282 bool ARB_shader_stencil_export_enable
;
283 bool ARB_shader_stencil_export_warn
;
284 bool AMD_conservative_depth_enable
;
285 bool AMD_conservative_depth_warn
;
286 bool ARB_conservative_depth_enable
;
287 bool ARB_conservative_depth_warn
;
288 bool AMD_shader_stencil_export_enable
;
289 bool AMD_shader_stencil_export_warn
;
290 bool OES_texture_3D_enable
;
291 bool OES_texture_3D_warn
;
292 bool OES_EGL_image_external_enable
;
293 bool OES_EGL_image_external_warn
;
294 bool ARB_shader_bit_encoding_enable
;
295 bool ARB_shader_bit_encoding_warn
;
296 bool ARB_uniform_buffer_object_enable
;
297 bool ARB_uniform_buffer_object_warn
;
298 bool OES_standard_derivatives_enable
;
299 bool OES_standard_derivatives_warn
;
300 bool ARB_texture_cube_map_array_enable
;
301 bool ARB_texture_cube_map_array_warn
;
302 bool ARB_shading_language_packing_enable
;
303 bool ARB_shading_language_packing_warn
;
304 bool ARB_texture_multisample_enable
;
305 bool ARB_texture_multisample_warn
;
306 bool ARB_texture_query_levels_enable
;
307 bool ARB_texture_query_levels_warn
;
308 bool ARB_texture_query_lod_enable
;
309 bool ARB_texture_query_lod_warn
;
310 bool ARB_gpu_shader5_enable
;
311 bool ARB_gpu_shader5_warn
;
312 bool AMD_vertex_shader_layer_enable
;
313 bool AMD_vertex_shader_layer_warn
;
314 bool ARB_shading_language_420pack_enable
;
315 bool ARB_shading_language_420pack_warn
;
316 bool EXT_shader_integer_mix_enable
;
317 bool EXT_shader_integer_mix_warn
;
320 /** Extensions supported by the OpenGL implementation. */
321 const struct gl_extensions
*extensions
;
323 /** Shaders containing built-in functions that are used for linking. */
324 struct gl_shader
*builtins_to_link
[16];
325 unsigned num_builtins_to_link
;
328 * For geometry shaders, size of the most recently seen input declaration
329 * that was a sized array, or 0 if no sized input array declarations have
332 * Unused for other shader types.
334 unsigned gs_input_size
;
337 # define YYLLOC_DEFAULT(Current, Rhs, N) \
341 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
342 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
343 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
344 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
348 (Current).first_line = (Current).last_line = \
349 YYRHSLOC(Rhs, 0).last_line; \
350 (Current).first_column = (Current).last_column = \
351 YYRHSLOC(Rhs, 0).last_column; \
353 (Current).source = 0; \
356 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
357 const char *fmt
, ...);
360 * Emit a warning to the shader log
362 * \sa _mesa_glsl_error
364 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
365 _mesa_glsl_parse_state
*state
,
366 const char *fmt
, ...);
368 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
371 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
374 extern int _mesa_glsl_lexer_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
377 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
380 * Process elements of the #extension directive
383 * If \c name and \c behavior are valid, \c true is returned. Otherwise
384 * \c false is returned.
386 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
387 const char *behavior
,
388 YYLTYPE
*behavior_locp
,
389 _mesa_glsl_parse_state
*state
);
392 * Get the textual name of the specified shader target
395 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
398 #endif /* __cplusplus */
402 * These definitions apply to C and C++
409 _mesa_glsl_shader_target_name(GLenum type
);
411 extern int glcpp_preprocess(void *ctx
, const char **shader
, char **info_log
,
412 const struct gl_extensions
*extensions
, struct gl_context
*gl_ctx
);
414 extern void _mesa_destroy_shader_compiler(void);
415 extern void _mesa_destroy_shader_compiler_caches(void);
422 #endif /* GLSL_PARSER_EXTRAS_H */