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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, ...
59 struct _mesa_glsl_parse_state {
60 _mesa_glsl_parse_state(struct gl_context *_ctx, GLenum target,
63 /* Callers of this ralloc-based new need not call delete. It's
64 * easier to just ralloc_free 'ctx' (or any of its ancestors). */
65 static void* operator new(size_t size, void *ctx)
67 void *mem = rzalloc_size(ctx, size);
73 /* If the user *does* call delete, that's OK, we will just
74 * ralloc_free in that case. */
75 static void operator delete(void *mem)
80 struct gl_context *const ctx;
82 exec_list translation_unit;
83 glsl_symbol_table *symbols;
85 unsigned num_uniform_blocks;
86 unsigned uniform_block_array_size;
87 struct gl_uniform_block *uniform_blocks;
90 unsigned language_version;
91 const char *version_string;
92 enum _mesa_glsl_parser_targets target;
95 * Printable list of GLSL versions supported by the current context
98 * This string should probably be generated per-context instead of per
99 * invokation of the compiler. This should be changed when the method of
100 * tracking supported GLSL versions changes.
102 const char *supported_version_string;
105 * Implementation defined limits that affect built-in variables, etc.
107 * \sa struct gl_constants (in mtypes.h)
112 unsigned MaxClipPlanes;
113 unsigned MaxTextureUnits;
114 unsigned MaxTextureCoords;
115 unsigned MaxVertexAttribs;
116 unsigned MaxVertexUniformComponents;
117 unsigned MaxVaryingFloats;
118 unsigned MaxVertexTextureImageUnits;
119 unsigned MaxCombinedTextureImageUnits;
120 unsigned MaxTextureImageUnits;
121 unsigned MaxFragmentUniformComponents;
123 /* ARB_draw_buffers */
124 unsigned MaxDrawBuffers;
127 * Set of GLSL versions supported by the current context
129 * Knowing that version X is supported doesn't mean that versions before
130 * X are also supported. Version 1.00 is only supported in an ES2
131 * context or when GL_ARB_ES2_compatibility is supported. In an OpenGL
132 * 3.0 "forward compatible" context, GLSL 1.10 and 1.20 are \b not
136 unsigned GLSL_100ES:1;
145 * During AST to IR conversion, pointer to current IR function
147 * Will be \c NULL whenever the AST to IR conversion is not inside a
148 * function definition.
150 class ir_function_signature *current_function;
153 * During AST to IR conversion, pointer to the toplevel IR
154 * instruction list being generated.
156 exec_list *toplevel_ir;
158 /** Have we found a return statement in this function? */
161 /** Was there an error during compilation? */
165 * Are all shader inputs / outputs invariant?
167 * This is set when the 'STDGL invariant(all)' pragma is used.
171 /** Loop or switch statement containing the current instructions. */
172 class ast_iteration_statement *loop_nesting_ast;
174 struct glsl_switch_state switch_state;
176 /** List of structures defined in user code. */
177 const glsl_type **user_structures;
178 unsigned num_user_structures;
183 * \name Enable bits for GLSL extensions
186 bool ARB_draw_buffers_enable;
187 bool ARB_draw_buffers_warn;
188 bool ARB_draw_instanced_enable;
189 bool ARB_draw_instanced_warn;
190 bool ARB_explicit_attrib_location_enable;
191 bool ARB_explicit_attrib_location_warn;
192 bool ARB_fragment_coord_conventions_enable;
193 bool ARB_fragment_coord_conventions_warn;
194 bool ARB_texture_rectangle_enable;
195 bool ARB_texture_rectangle_warn;
196 bool EXT_texture_array_enable;
197 bool EXT_texture_array_warn;
198 bool ARB_shader_texture_lod_enable;
199 bool ARB_shader_texture_lod_warn;
200 bool ARB_shader_stencil_export_enable;
201 bool ARB_shader_stencil_export_warn;
202 bool AMD_conservative_depth_enable;
203 bool AMD_conservative_depth_warn;
204 bool ARB_conservative_depth_enable;
205 bool ARB_conservative_depth_warn;
206 bool AMD_shader_stencil_export_enable;
207 bool AMD_shader_stencil_export_warn;
208 bool OES_texture_3D_enable;
209 bool OES_texture_3D_warn;
210 bool OES_EGL_image_external_enable;
211 bool OES_EGL_image_external_warn;
212 bool ARB_shader_bit_encoding_enable;
213 bool ARB_shader_bit_encoding_warn;
214 bool ARB_uniform_buffer_object_enable;
215 bool ARB_uniform_buffer_object_warn;
218 /** Extensions supported by the OpenGL implementation. */
219 const struct gl_extensions *extensions;
221 /** Shaders containing built-in functions that are used for linking. */
222 struct gl_shader *builtins_to_link[16];
223 unsigned num_builtins_to_link;
226 typedef struct YYLTYPE {
233 # define YYLTYPE_IS_DECLARED 1
234 # define YYLTYPE_IS_TRIVIAL 1
236 # define YYLLOC_DEFAULT(Current, Rhs, N) \
240 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
241 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
242 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
243 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
247 (Current).first_line = (Current).last_line = \
248 YYRHSLOC(Rhs, 0).last_line; \
249 (Current).first_column = (Current).last_column = \
250 YYRHSLOC(Rhs, 0).last_column; \
252 (Current).source = 0; \
255 extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
256 const char *fmt, ...);
259 * Emit a warning to the shader log
261 * \sa _mesa_glsl_error
263 extern void _mesa_glsl_warning(const YYLTYPE *locp,
264 _mesa_glsl_parse_state *state,
265 const char *fmt, ...);
267 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
270 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state);
273 extern int _mesa_glsl_lex(union YYSTYPE *yylval, YYLTYPE *yylloc,
276 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *);
279 * Process elements of the #extension directive
282 * If \c name and \c behavior are valid, \c true is returned. Otherwise
283 * \c false is returned.
285 extern bool _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
286 const char *behavior,
287 YYLTYPE *behavior_locp,
288 _mesa_glsl_parse_state *state);
291 * Get the textual name of the specified shader target
294 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target);
297 #endif /* __cplusplus */
301 * These definitions apply to C and C++
307 extern int preprocess(void *ctx, const char **shader, char **info_log,
308 const struct gl_extensions *extensions, int api);
310 extern void _mesa_destroy_shader_compiler(void);
311 extern void _mesa_destroy_shader_compiler_caches(void);
318 #endif /* GLSL_PARSER_EXTRAS_H */