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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 _mesa_glsl_parse_state
{
46 _mesa_glsl_parse_state(struct gl_context
*ctx
, GLenum target
,
49 /* Callers of this ralloc-based new need not call delete. It's
50 * easier to just ralloc_free 'ctx' (or any of its ancestors). */
51 static void* operator new(size_t size
, void *ctx
)
53 void *mem
= rzalloc_size(ctx
, size
);
59 /* If the user *does* call delete, that's OK, we will just
60 * ralloc_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 * Printable list of GLSL versions supported by the current context
79 * This string should probably be generated per-context instead of per
80 * invokation of the compiler. This should be changed when the method of
81 * tracking supported GLSL versions changes.
83 const char *supported_version_string
;
86 * Implementation defined limits that affect built-in variables, etc.
88 * \sa struct gl_constants (in mtypes.h)
93 unsigned MaxClipPlanes
;
94 unsigned MaxTextureUnits
;
95 unsigned MaxTextureCoords
;
96 unsigned MaxVertexAttribs
;
97 unsigned MaxVertexUniformComponents
;
98 unsigned MaxVaryingFloats
;
99 unsigned MaxVertexTextureImageUnits
;
100 unsigned MaxCombinedTextureImageUnits
;
101 unsigned MaxTextureImageUnits
;
102 unsigned MaxFragmentUniformComponents
;
104 /* ARB_draw_buffers */
105 unsigned MaxDrawBuffers
;
108 * Set of GLSL versions supported by the current context
110 * Knowing that version X is supported doesn't mean that versions before
111 * X are also supported. Version 1.00 is only supported in an ES2
112 * context or when GL_ARB_ES2_compatibility is supported. In an OpenGL
113 * 3.0 "forward compatible" context, GLSL 1.10 and 1.20 are \b not
117 unsigned GLSL_100ES
:1;
125 * During AST to IR conversion, pointer to current IR function
127 * Will be \c NULL whenever the AST to IR conversion is not inside a
128 * function definition.
130 class ir_function_signature
*current_function
;
132 /** Have we found a return statement in this function? */
135 /** Was there an error during compilation? */
139 * Are all shader inputs / outputs invariant?
141 * This is set when the 'STDGL invariant(all)' pragma is used.
145 /** Loop or switch statement containing the current instructions. */
146 class ir_instruction
*loop_or_switch_nesting
;
147 class ast_iteration_statement
*loop_or_switch_nesting_ast
;
149 /** List of structures defined in user code. */
150 const glsl_type
**user_structures
;
151 unsigned num_user_structures
;
156 * \name Enable bits for GLSL extensions
159 unsigned ARB_draw_buffers_enable
:1;
160 unsigned ARB_draw_buffers_warn
:1;
161 unsigned ARB_draw_instanced_enable
:1;
162 unsigned ARB_draw_instanced_warn
:1;
163 unsigned ARB_explicit_attrib_location_enable
:1;
164 unsigned ARB_explicit_attrib_location_warn
:1;
165 unsigned ARB_fragment_coord_conventions_enable
:1;
166 unsigned ARB_fragment_coord_conventions_warn
:1;
167 unsigned ARB_texture_rectangle_enable
:1;
168 unsigned ARB_texture_rectangle_warn
:1;
169 unsigned EXT_texture_array_enable
:1;
170 unsigned EXT_texture_array_warn
:1;
171 unsigned ARB_shader_stencil_export_enable
:1;
172 unsigned ARB_shader_stencil_export_warn
:1;
173 unsigned AMD_conservative_depth_enable
:1;
174 unsigned AMD_conservative_depth_warn
:1;
175 unsigned AMD_shader_stencil_export_enable
:1;
176 unsigned AMD_shader_stencil_export_warn
:1;
177 unsigned OES_texture_3D_enable
:1;
178 unsigned OES_texture_3D_warn
:1;
181 /** Extensions supported by the OpenGL implementation. */
182 const struct gl_extensions
*extensions
;
184 /** Shaders containing built-in functions that are used for linking. */
185 struct gl_shader
*builtins_to_link
[16];
186 unsigned num_builtins_to_link
;
189 typedef struct YYLTYPE
{
196 # define YYLTYPE_IS_DECLARED 1
197 # define YYLTYPE_IS_TRIVIAL 1
199 # define YYLLOC_DEFAULT(Current, Rhs, N) \
203 (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \
204 (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \
205 (Current).last_line = YYRHSLOC(Rhs, N).last_line; \
206 (Current).last_column = YYRHSLOC(Rhs, N).last_column; \
210 (Current).first_line = (Current).last_line = \
211 YYRHSLOC(Rhs, 0).last_line; \
212 (Current).first_column = (Current).last_column = \
213 YYRHSLOC(Rhs, 0).last_column; \
215 (Current).source = 0; \
218 extern void _mesa_glsl_error(YYLTYPE
*locp
, _mesa_glsl_parse_state
*state
,
219 const char *fmt
, ...);
222 * Emit a warning to the shader log
224 * \sa _mesa_glsl_error
226 extern void _mesa_glsl_warning(const YYLTYPE
*locp
,
227 _mesa_glsl_parse_state
*state
,
228 const char *fmt
, ...);
230 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state
*state
,
233 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state
*state
);
236 extern int _mesa_glsl_lex(union YYSTYPE
*yylval
, YYLTYPE
*yylloc
,
239 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state
*);
242 * Process elements of the #extension directive
245 * If \c name and \c behavior are valid, \c true is returned. Otherwise
246 * \c false is returned.
248 extern bool _mesa_glsl_process_extension(const char *name
, YYLTYPE
*name_locp
,
249 const char *behavior
,
250 YYLTYPE
*behavior_locp
,
251 _mesa_glsl_parse_state
*state
);
254 * Get the textual name of the specified shader target
257 _mesa_glsl_shader_target_name(enum _mesa_glsl_parser_targets target
);
260 #endif /* __cplusplus */
264 * These definitions apply to C and C++
270 extern int preprocess(void *ctx
, const char **shader
, char **info_log
,
271 const struct gl_extensions
*extensions
, int api
);
273 extern void _mesa_destroy_shader_compiler(void);
274 extern void _mesa_destroy_shader_compiler_caches(void);
281 #endif /* GLSL_PARSER_EXTRAS_H */