2 * Copyright © 2010 Intel Corporation
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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 struct _mesa_glsl_parse_state
{
63 _mesa_glsl_parse_state(struct gl_context
*_ctx
, GLenum target
,
66 /* Callers of this ralloc-based new need not call delete. It's
67 * easier to just ralloc_free 'ctx' (or any of its ancestors). */
68 static void* operator new(size_t size
, void *ctx
)
70 void *mem
= rzalloc_size(ctx
, size
);
76 /* If the user *does* call delete, that's OK, we will just
77 * ralloc_free in that case. */
78 static void operator delete(void *mem
)
83 struct gl_context
*const ctx
;
85 exec_list translation_unit
;
86 glsl_symbol_table
*symbols
;
88 unsigned num_uniform_blocks
;
89 unsigned uniform_block_array_size
;
90 struct gl_uniform_block
*uniform_blocks
;
93 unsigned language_version
;
94 const char *version_string
;
95 enum _mesa_glsl_parser_targets target
;
98 * Default uniform layout qualifiers tracked during parsing.
99 * Currently affects uniform blocks and uniform buffer variables in
102 struct ast_type_qualifier
*default_uniform_qualifier
;
105 * Printable list of GLSL versions supported by the current context
108 * This string should probably be generated per-context instead of per
109 * invokation of the compiler. This should be changed when the method of
110 * tracking supported GLSL versions changes.
112 const char *supported_version_string
;
115 * Implementation defined limits that affect built-in variables, etc.
117 * \sa struct gl_constants (in mtypes.h)
122 unsigned MaxClipPlanes
;
123 unsigned MaxTextureUnits
;
124 unsigned MaxTextureCoords
;
125 unsigned MaxVertexAttribs
;
126 unsigned MaxVertexUniformComponents
;
127 unsigned MaxVaryingFloats
;
128 unsigned MaxVertexTextureImageUnits
;
129 unsigned MaxCombinedTextureImageUnits
;
130 unsigned MaxTextureImageUnits
;
131 unsigned MaxFragmentUniformComponents
;
133 /* ARB_draw_buffers */
134 unsigned MaxDrawBuffers
;
138 * During AST to IR conversion, pointer to current IR function
140 * Will be \c NULL whenever the AST to IR conversion is not inside a
141 * function definition.
143 class ir_function_signature
*current_function
;
146 * During AST to IR conversion, pointer to the toplevel IR
147 * instruction list being generated.
149 exec_list
*toplevel_ir
;
151 /** Have we found a return statement in this function? */
154 /** Was there an error during compilation? */
158 * Are all shader inputs / outputs invariant?
160 * This is set when the 'STDGL invariant(all)' pragma is used.
164 /** Loop or switch statement containing the current instructions. */
165 class ast_iteration_statement
*loop_nesting_ast
;
167 struct glsl_switch_state switch_state
;
169 /** List of structures defined in user code. */
170 const glsl_type
**user_structures
;
171 unsigned num_user_structures
;
176 * \name Enable bits for GLSL extensions
179 bool ARB_draw_buffers_enable
;
180 bool ARB_draw_buffers_warn
;
181 bool ARB_draw_instanced_enable
;
182 bool ARB_draw_instanced_warn
;
183 bool ARB_explicit_attrib_location_enable
;
184 bool ARB_explicit_attrib_location_warn
;
185 bool ARB_fragment_coord_conventions_enable
;
186 bool ARB_fragment_coord_conventions_warn
;
187 bool ARB_texture_rectangle_enable
;
188 bool ARB_texture_rectangle_warn
;
189 bool EXT_texture_array_enable
;
190 bool EXT_texture_array_warn
;
191 bool ARB_shader_texture_lod_enable
;
192 bool ARB_shader_texture_lod_warn
;
193 bool ARB_shader_stencil_export_enable
;
194 bool ARB_shader_stencil_export_warn
;
195 bool AMD_conservative_depth_enable
;
196 bool AMD_conservative_depth_warn
;
197 bool ARB_conservative_depth_enable
;
198 bool ARB_conservative_depth_warn
;
199 bool AMD_shader_stencil_export_enable
;
200 bool AMD_shader_stencil_export_warn
;
201 bool OES_texture_3D_enable
;
202 bool OES_texture_3D_warn
;
203 bool OES_EGL_image_external_enable
;
204 bool OES_EGL_image_external_warn
;
205 bool ARB_shader_bit_encoding_enable
;
206 bool ARB_shader_bit_encoding_warn
;
207 bool ARB_uniform_buffer_object_enable
;
208 bool ARB_uniform_buffer_object_warn
;
209 bool OES_standard_derivatives_enable
;
210 bool OES_standard_derivatives_warn
;
211 bool ARB_texture_cube_map_array_enable
;
212 bool ARB_texture_cube_map_array_warn
;
215 /** Extensions supported by the OpenGL implementation. */
216 const struct gl_extensions
*extensions
;
218 /** Shaders containing built-in functions that are used for linking. */
219 struct gl_shader
*builtins_to_link
[16];
220 unsigned num_builtins_to_link
;
223 typedef struct YYLTYPE
{
230 # define YYLTYPE_IS_DECLARED 1
231 # define YYLTYPE_IS_TRIVIAL 1
233 # define YYLLOC_DEFAULT(Current, Rhs, N) \
237 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
238 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
239 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
240 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
244 (Current).first_line = (Current).last_line = \
245 YYRHSLOC(Rhs, 0).last_line; \
246 (Current).first_column = (Current).last_column = \
247 YYRHSLOC(Rhs, 0).last_column; \
249 (Current).source = 0; \
252 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
253 const char *fmt
, ...);
256 * Emit a warning to the shader log
258 * \sa _mesa_glsl_error
260 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
261 _mesa_glsl_parse_state
*state
,
262 const char *fmt
, ...);
264 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
267 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
270 extern int _mesa_glsl_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
273 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
276 * Process elements of the #extension directive
279 * If \c name and \c behavior are valid, \c true is returned. Otherwise
280 * \c false is returned.
282 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
283 const char *behavior
,
284 YYLTYPE
*behavior_locp
,
285 _mesa_glsl_parse_state
*state
);
288 * Get the textual name of the specified shader target
291 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
294 #endif /* __cplusplus */
298 * These definitions apply to C and C++
304 extern int glcpp_preprocess(void *ctx
, const char **shader
, char **info_log
,
305 const struct gl_extensions
*extensions
, int api
);
307 extern void _mesa_destroy_shader_compiler(void);
308 extern void _mesa_destroy_shader_compiler_caches(void);
315 #endif /* GLSL_PARSER_EXTRAS_H */