src/glsl/glsl_parser_extras.h

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  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,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #pragma once
  25 #ifndef GLSL_PARSER_EXTRAS_H
  26 #define GLSL_PARSER_EXTRAS_H
  27
  28 /*
  29  * Most of the definitions here only apply to C++
  30  */
  31 #ifdef __cplusplus
  32
  33
  34 #include <stdlib.h>
  35 #include "glsl_symbol_table.h"
  36
  37 struct gl_context;
  38
  39 struct glsl_switch_state {
  40    /** Temporary variables needed for switch statement. */
  41    ir_variable *test_var;
  42    ir_variable *is_fallthru_var;
  43    class ast_switch_statement *switch_nesting_ast;
  44
  45    /** Used to detect if 'continue' was called inside a switch. */
  46    ir_variable *continue_inside;
  47
  48    /** Used to set condition if 'default' label should be chosen. */
  49    ir_variable *run_default;
  50
  51    /** Table of constant values already used in case labels */
  52    struct hash_table *labels_ht;
  53    class ast_case_label *previous_default;
  54
  55    bool is_switch_innermost; // if switch stmt is closest to break, ...
  56 };
  57
  58 const char *
  59 glsl_compute_version_string(void *mem_ctx, bool is_es, unsigned version);
  60
  61 typedef struct YYLTYPE {
  62    int first_line;
  63    int first_column;
  64    int last_line;
  65    int last_column;
  66    unsigned source;
  67 } YYLTYPE;
  68 # define YYLTYPE_IS_DECLARED 1
  69 # define YYLTYPE_IS_TRIVIAL 1
  70
  71 extern void _mesa_glsl_error(YYLTYPE *locp, _mesa_glsl_parse_state *state,
  72                              const char *fmt, ...);
  73
  74
  75 struct _mesa_glsl_parse_state {
  76    _mesa_glsl_parse_state(struct gl_context *_ctx, gl_shader_stage stage,
  77                           void *mem_ctx);
  78
  79    DECLARE_RALLOC_CXX_OPERATORS(_mesa_glsl_parse_state);
  80
  81    /**
  82     * Generate a string representing the GLSL version currently being compiled
  83     * (useful for error messages).
  84     */
  85    const char *get_version_string()
  86    {
  87       return glsl_compute_version_string(this, this->es_shader,
  88                                          this->language_version);
  89    }
  90
  91    /**
  92     * Determine whether the current GLSL version is sufficiently high to
  93     * support a certain feature.
  94     *
  95     * \param required_glsl_version is the desktop GLSL version that is
  96     * required to support the feature, or 0 if no version of desktop GLSL
  97     * supports the feature.
  98     *
  99     * \param required_glsl_es_version is the GLSL ES version that is required
 100     * to support the feature, or 0 if no version of GLSL ES suports the
 101     * feature.
 102     */
 103    bool is_version(unsigned required_glsl_version,
 104                    unsigned required_glsl_es_version) const
 105    {
 106       unsigned required_version = this->es_shader ?
 107          required_glsl_es_version : required_glsl_version;
 108       unsigned this_version = this->forced_language_version
 109          ? this->forced_language_version : this->language_version;
 110       return required_version != 0
 111          && this_version >= required_version;
 112    }
 113
 114    bool check_version(unsigned required_glsl_version,
 115                       unsigned required_glsl_es_version,
 116                       YYLTYPE *locp, const char *fmt, ...) PRINTFLIKE(5, 6);
 117
 118    bool check_precision_qualifiers_allowed(YYLTYPE *locp)
 119    {
 120       return check_version(130, 100, locp,
 121                            "precision qualifiers are forbidden");
 122    }
 123
 124    bool check_bitwise_operations_allowed(YYLTYPE *locp)
 125    {
 126       return check_version(130, 300, locp, "bit-wise operations are forbidden");
 127    }
 128
 129    bool check_explicit_attrib_stream_allowed(YYLTYPE *locp)
 130    {
 131       if (!this->has_explicit_attrib_stream()) {
 132          const char *const requirement = "GL_ARB_gpu_shader5 extension or GLSL 4.00";
 133
 134          _mesa_glsl_error(locp, this, "explicit stream requires %s",
 135                           requirement);
 136          return false;
 137       }
 138
 139       return true;
 140    }
 141
 142    bool check_explicit_attrib_location_allowed(YYLTYPE *locp,
 143                                                const ir_variable *var)
 144    {
 145       if (!this->has_explicit_attrib_location()) {
 146          const char *const requirement = this->es_shader
 147             ? "GLSL ES 3.00"
 148             : "GL_ARB_explicit_attrib_location extension or GLSL 3.30";
 149
 150          _mesa_glsl_error(locp, this, "%s explicit location requires %s",
 151                           mode_string(var), requirement);
 152          return false;
 153       }
 154
 155       return true;
 156    }
 157
 158    bool check_separate_shader_objects_allowed(YYLTYPE *locp,
 159                                               const ir_variable *var)
 160    {
 161       if (!this->has_separate_shader_objects()) {
 162          const char *const requirement = this->es_shader
 163             ? "GL_EXT_separate_shader_objects extension or GLSL ES 3.10"
 164             : "GL_ARB_separate_shader_objects extension or GLSL 4.20";
 165
 166          _mesa_glsl_error(locp, this, "%s explicit location requires %s",
 167                           mode_string(var), requirement);
 168          return false;
 169       }
 170
 171       return true;
 172    }
 173
 174    bool check_explicit_uniform_location_allowed(YYLTYPE *locp,
 175                                                 const ir_variable *)
 176    {
 177       if (!this->has_explicit_attrib_location() ||
 178           !this->has_explicit_uniform_location()) {
 179          const char *const requirement = this->es_shader
 180             ? "GLSL ES 3.10"
 181             : "GL_ARB_explicit_uniform_location and either "
 182               "GL_ARB_explicit_attrib_location or GLSL 3.30.";
 183
 184          _mesa_glsl_error(locp, this,
 185                           "uniform explicit location requires %s",
 186                           requirement);
 187          return false;
 188       }
 189
 190       return true;
 191    }
 192
 193    bool has_atomic_counters() const
 194    {
 195       return ARB_shader_atomic_counters_enable || is_version(420, 310);
 196    }
 197
 198    bool has_explicit_attrib_stream() const
 199    {
 200       return ARB_gpu_shader5_enable || is_version(400, 0);
 201    }
 202
 203    bool has_explicit_attrib_location() const
 204    {
 205       return ARB_explicit_attrib_location_enable || is_version(330, 300);
 206    }
 207
 208    bool has_explicit_uniform_location() const
 209    {
 210       return ARB_explicit_uniform_location_enable || is_version(430, 310);
 211    }
 212
 213    bool has_uniform_buffer_objects() const
 214    {
 215       return ARB_uniform_buffer_object_enable || is_version(140, 300);
 216    }
 217
 218    bool has_shader_storage_buffer_objects() const
 219    {
 220       return ARB_shader_storage_buffer_object_enable || is_version(430, 0);
 221    }
 222
 223    bool has_separate_shader_objects() const
 224    {
 225       return ARB_separate_shader_objects_enable || is_version(410, 310)
 226          || EXT_separate_shader_objects_enable;
 227    }
 228
 229    bool has_double() const
 230    {
 231       return ARB_gpu_shader_fp64_enable || is_version(400, 0);
 232    }
 233
 234    void process_version_directive(YYLTYPE *locp, int version,
 235                                   const char *ident);
 236
 237    struct gl_context *const ctx;
 238    void *scanner;
 239    exec_list translation_unit;
 240    glsl_symbol_table *symbols;
 241
 242    unsigned num_supported_versions;
 243    struct {
 244       unsigned ver;
 245       bool es;
 246    } supported_versions[15];
 247
 248    bool es_shader;
 249    unsigned language_version;
 250    unsigned forced_language_version;
 251    gl_shader_stage stage;
 252
 253    /**
 254     * Number of nested struct_specifier levels
 255     *
 256     * Outside a struct_specifier, this is zero.
 257     */
 258    unsigned struct_specifier_depth;
 259
 260    /**
 261     * Default uniform layout qualifiers tracked during parsing.
 262     * Currently affects uniform blocks and uniform buffer variables in
 263     * those blocks.
 264     */
 265    struct ast_type_qualifier *default_uniform_qualifier;
 266
 267    /**
 268     * Variables to track different cases if a fragment shader redeclares
 269     * built-in variable gl_FragCoord.
 270     *
 271     * Note: These values are computed at ast_to_hir time rather than at parse
 272     * time.
 273     */
 274    bool fs_redeclares_gl_fragcoord;
 275    bool fs_origin_upper_left;
 276    bool fs_pixel_center_integer;
 277    bool fs_redeclares_gl_fragcoord_with_no_layout_qualifiers;
 278
 279    /**
 280     * True if a geometry shader input primitive type or tessellation control
 281     * output vertices were specified using a layout directive.
 282     *
 283     * Note: these values are computed at ast_to_hir time rather than at parse
 284     * time.
 285     */
 286    bool gs_input_prim_type_specified;
 287    bool tcs_output_vertices_specified;
 288
 289    /**
 290     * Input layout qualifiers from GLSL 1.50 (geometry shader controls),
 291     * and GLSL 4.00 (tessellation evaluation shader)
 292     */
 293    struct ast_type_qualifier *in_qualifier;
 294
 295    /**
 296     * True if a compute shader input local size was specified using a layout
 297     * directive.
 298     *
 299     * Note: this value is computed at ast_to_hir time rather than at parse
 300     * time.
 301     */
 302    bool cs_input_local_size_specified;
 303
 304    /**
 305     * If cs_input_local_size_specified is true, the local size that was
 306     * specified.  Otherwise ignored.
 307     */
 308    unsigned cs_input_local_size[3];
 309
 310    /**
 311     * Output layout qualifiers from GLSL 1.50 (geometry shader controls),
 312     * and GLSL 4.00 (tessellation control shader).
 313     */
 314    struct ast_type_qualifier *out_qualifier;
 315
 316    /**
 317     * Printable list of GLSL versions supported by the current context
 318     *
 319     * \note
 320     * This string should probably be generated per-context instead of per
 321     * invokation of the compiler.  This should be changed when the method of
 322     * tracking supported GLSL versions changes.
 323     */
 324    const char *supported_version_string;
 325
 326    /**
 327     * Implementation defined limits that affect built-in variables, etc.
 328     *
 329     * \sa struct gl_constants (in mtypes.h)
 330     */
 331    struct {
 332       /* 1.10 */
 333       unsigned MaxLights;
 334       unsigned MaxClipPlanes;
 335       unsigned MaxTextureUnits;
 336       unsigned MaxTextureCoords;
 337       unsigned MaxVertexAttribs;
 338       unsigned MaxVertexUniformComponents;
 339       unsigned MaxVertexTextureImageUnits;
 340       unsigned MaxCombinedTextureImageUnits;
 341       unsigned MaxTextureImageUnits;
 342       unsigned MaxFragmentUniformComponents;
 343
 344       /* ARB_draw_buffers */
 345       unsigned MaxDrawBuffers;
 346
 347       /* 3.00 ES */
 348       int MinProgramTexelOffset;
 349       int MaxProgramTexelOffset;
 350
 351       /* 1.50 */
 352       unsigned MaxVertexOutputComponents;
 353       unsigned MaxGeometryInputComponents;
 354       unsigned MaxGeometryOutputComponents;
 355       unsigned MaxFragmentInputComponents;
 356       unsigned MaxGeometryTextureImageUnits;
 357       unsigned MaxGeometryOutputVertices;
 358       unsigned MaxGeometryTotalOutputComponents;
 359       unsigned MaxGeometryUniformComponents;
 360
 361       /* ARB_shader_atomic_counters */
 362       unsigned MaxVertexAtomicCounters;
 363       unsigned MaxGeometryAtomicCounters;
 364       unsigned MaxFragmentAtomicCounters;
 365       unsigned MaxCombinedAtomicCounters;
 366       unsigned MaxAtomicBufferBindings;
 367
 368       /* These are also atomic counter related, but they weren't added to
 369        * until atomic counters were added to core in GLSL 4.20 and GLSL ES
 370        * 3.10.
 371        */
 372       unsigned MaxVertexAtomicCounterBuffers;
 373       unsigned MaxGeometryAtomicCounterBuffers;
 374       unsigned MaxFragmentAtomicCounterBuffers;
 375       unsigned MaxCombinedAtomicCounterBuffers;
 376       unsigned MaxAtomicCounterBufferSize;
 377
 378       /* ARB_compute_shader */
 379       unsigned MaxComputeWorkGroupCount[3];
 380       unsigned MaxComputeWorkGroupSize[3];
 381
 382       /* ARB_shader_image_load_store */
 383       unsigned MaxImageUnits;
 384       unsigned MaxCombinedImageUnitsAndFragmentOutputs;
 385       unsigned MaxImageSamples;
 386       unsigned MaxVertexImageUniforms;
 387       unsigned MaxGeometryImageUniforms;
 388       unsigned MaxFragmentImageUniforms;
 389       unsigned MaxCombinedImageUniforms;
 390
 391       /* ARB_viewport_array */
 392       unsigned MaxViewports;
 393
 394       /* ARB_tessellation_shader */
 395       unsigned MaxPatchVertices;
 396    } Const;
 397
 398    /**
 399     * During AST to IR conversion, pointer to current IR function
 400     *
 401     * Will be \c NULL whenever the AST to IR conversion is not inside a
 402     * function definition.
 403     */
 404    class ir_function_signature *current_function;
 405
 406    /**
 407     * During AST to IR conversion, pointer to the toplevel IR
 408     * instruction list being generated.
 409     */
 410    exec_list *toplevel_ir;
 411
 412    /** Have we found a return statement in this function? */
 413    bool found_return;
 414
 415    /** Was there an error during compilation? */
 416    bool error;
 417
 418    /**
 419     * Are all shader inputs / outputs invariant?
 420     *
 421     * This is set when the 'STDGL invariant(all)' pragma is used.
 422     */
 423    bool all_invariant;
 424
 425    /** Loop or switch statement containing the current instructions. */
 426    class ast_iteration_statement *loop_nesting_ast;
 427
 428    struct glsl_switch_state switch_state;
 429
 430    /** List of structures defined in user code. */
 431    const glsl_type **user_structures;
 432    unsigned num_user_structures;
 433
 434    char *info_log;
 435
 436    /**
 437     * \name Enable bits for GLSL extensions
 438     */
 439    /*@{*/
 440    /* ARB extensions go here, sorted alphabetically.
 441     */
 442    bool ARB_arrays_of_arrays_enable;
 443    bool ARB_arrays_of_arrays_warn;
 444    bool ARB_compute_shader_enable;
 445    bool ARB_compute_shader_warn;
 446    bool ARB_conservative_depth_enable;
 447    bool ARB_conservative_depth_warn;
 448    bool ARB_derivative_control_enable;
 449    bool ARB_derivative_control_warn;
 450    bool ARB_draw_buffers_enable;
 451    bool ARB_draw_buffers_warn;
 452    bool ARB_draw_instanced_enable;
 453    bool ARB_draw_instanced_warn;
 454    bool ARB_explicit_attrib_location_enable;
 455    bool ARB_explicit_attrib_location_warn;
 456    bool ARB_explicit_uniform_location_enable;
 457    bool ARB_explicit_uniform_location_warn;
 458    bool ARB_fragment_coord_conventions_enable;
 459    bool ARB_fragment_coord_conventions_warn;
 460    bool ARB_fragment_layer_viewport_enable;
 461    bool ARB_fragment_layer_viewport_warn;
 462    bool ARB_gpu_shader5_enable;
 463    bool ARB_gpu_shader5_warn;
 464    bool ARB_gpu_shader_fp64_enable;
 465    bool ARB_gpu_shader_fp64_warn;
 466    bool ARB_sample_shading_enable;
 467    bool ARB_sample_shading_warn;
 468    bool ARB_separate_shader_objects_enable;
 469    bool ARB_separate_shader_objects_warn;
 470    bool ARB_shader_atomic_counters_enable;
 471    bool ARB_shader_atomic_counters_warn;
 472    bool ARB_shader_bit_encoding_enable;
 473    bool ARB_shader_bit_encoding_warn;
 474    bool ARB_shader_image_load_store_enable;
 475    bool ARB_shader_image_load_store_warn;
 476    bool ARB_shader_precision_enable;
 477    bool ARB_shader_precision_warn;
 478    bool ARB_shader_stencil_export_enable;
 479    bool ARB_shader_stencil_export_warn;
 480    bool ARB_shader_storage_buffer_object_enable;
 481    bool ARB_shader_storage_buffer_object_warn;
 482    bool ARB_shader_texture_lod_enable;
 483    bool ARB_shader_texture_lod_warn;
 484    bool ARB_shading_language_420pack_enable;
 485    bool ARB_shading_language_420pack_warn;
 486    bool ARB_shading_language_packing_enable;
 487    bool ARB_shading_language_packing_warn;
 488    bool ARB_tessellation_shader_enable;
 489    bool ARB_tessellation_shader_warn;
 490    bool ARB_texture_cube_map_array_enable;
 491    bool ARB_texture_cube_map_array_warn;
 492    bool ARB_texture_gather_enable;
 493    bool ARB_texture_gather_warn;
 494    bool ARB_texture_multisample_enable;
 495    bool ARB_texture_multisample_warn;
 496    bool ARB_texture_query_levels_enable;
 497    bool ARB_texture_query_levels_warn;
 498    bool ARB_texture_query_lod_enable;
 499    bool ARB_texture_query_lod_warn;
 500    bool ARB_texture_rectangle_enable;
 501    bool ARB_texture_rectangle_warn;
 502    bool ARB_uniform_buffer_object_enable;
 503    bool ARB_uniform_buffer_object_warn;
 504    bool ARB_vertex_attrib_64bit_enable;
 505    bool ARB_vertex_attrib_64bit_warn;
 506    bool ARB_viewport_array_enable;
 507    bool ARB_viewport_array_warn;
 508
 509    /* KHR extensions go here, sorted alphabetically.
 510     */
 511
 512    /* OES extensions go here, sorted alphabetically.
 513     */
 514    bool OES_EGL_image_external_enable;
 515    bool OES_EGL_image_external_warn;
 516    bool OES_standard_derivatives_enable;
 517    bool OES_standard_derivatives_warn;
 518    bool OES_texture_3D_enable;
 519    bool OES_texture_3D_warn;
 520
 521    /* All other extensions go here, sorted alphabetically.
 522     */
 523    bool AMD_conservative_depth_enable;
 524    bool AMD_conservative_depth_warn;
 525    bool AMD_shader_stencil_export_enable;
 526    bool AMD_shader_stencil_export_warn;
 527    bool AMD_shader_trinary_minmax_enable;
 528    bool AMD_shader_trinary_minmax_warn;
 529    bool AMD_vertex_shader_layer_enable;
 530    bool AMD_vertex_shader_layer_warn;
 531    bool AMD_vertex_shader_viewport_index_enable;
 532    bool AMD_vertex_shader_viewport_index_warn;
 533    bool EXT_draw_buffers_enable;
 534    bool EXT_draw_buffers_warn;
 535    bool EXT_separate_shader_objects_enable;
 536    bool EXT_separate_shader_objects_warn;
 537    bool EXT_shader_integer_mix_enable;
 538    bool EXT_shader_integer_mix_warn;
 539    bool EXT_texture_array_enable;
 540    bool EXT_texture_array_warn;
 541    /*@}*/
 542
 543    /** Extensions supported by the OpenGL implementation. */
 544    const struct gl_extensions *extensions;
 545
 546    bool uses_builtin_functions;
 547    bool fs_uses_gl_fragcoord;
 548
 549    /**
 550     * For geometry shaders, size of the most recently seen input declaration
 551     * that was a sized array, or 0 if no sized input array declarations have
 552     * been seen.
 553     *
 554     * Unused for other shader types.
 555     */
 556    unsigned gs_input_size;
 557
 558    bool fs_early_fragment_tests;
 559
 560    /**
 561     * For tessellation control shaders, size of the most recently seen output
 562     * declaration that was a sized array, or 0 if no sized output array
 563     * declarations have been seen.
 564     *
 565     * Unused for other shader types.
 566     */
 567    unsigned tcs_output_size;
 568
 569    /** Atomic counter offsets by binding */
 570    unsigned atomic_counter_offsets[MAX_COMBINED_ATOMIC_BUFFERS];
 571
 572    bool allow_extension_directive_midshader;
 573 };
 574
 575 # define YYLLOC_DEFAULT(Current, Rhs, N)                        \
 576 do {                                                            \
 577    if (N)                                                       \
 578    {                                                            \
 579       (Current).first_line   = YYRHSLOC(Rhs, 1).first_line;     \
 580       (Current).first_column = YYRHSLOC(Rhs, 1).first_column;   \
 581       (Current).last_line    = YYRHSLOC(Rhs, N).last_line;      \
 582       (Current).last_column  = YYRHSLOC(Rhs, N).last_column;    \
 583    }                                                            \
 584    else                                                         \
 585    {                                                            \
 586       (Current).first_line   = (Current).last_line =            \
 587          YYRHSLOC(Rhs, 0).last_line;                            \
 588       (Current).first_column = (Current).last_column =          \
 589          YYRHSLOC(Rhs, 0).last_column;                          \
 590    }                                                            \
 591    (Current).source = 0;                                        \
 592 } while (0)
 593
 594 /**
 595  * Emit a warning to the shader log
 596  *
 597  * \sa _mesa_glsl_error
 598  */
 599 extern void _mesa_glsl_warning(const YYLTYPE *locp,
 600                                _mesa_glsl_parse_state *state,
 601                                const char *fmt, ...);
 602
 603 extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
 604                                   const char *string);
 605
 606 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state);
 607
 608 union YYSTYPE;
 609 extern int _mesa_glsl_lexer_lex(union YYSTYPE *yylval, YYLTYPE *yylloc,
 610                                 void *scanner);
 611
 612 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *);
 613
 614 /**
 615  * Process elements of the #extension directive
 616  *
 617  * \return
 618  * If \c name and \c behavior are valid, \c true is returned.  Otherwise
 619  * \c false is returned.
 620  */
 621 extern bool _mesa_glsl_process_extension(const char *name, YYLTYPE *name_locp,
 622                                          const char *behavior,
 623                                          YYLTYPE *behavior_locp,
 624                                          _mesa_glsl_parse_state *state);
 625
 626 #endif /* __cplusplus */
 627
 628
 629 /*
 630  * These definitions apply to C and C++
 631  */
 632 #ifdef __cplusplus
 633 extern "C" {
 634 #endif
 635
 636 /**
 637  * Get the textual name of the specified shader stage (which is a
 638  * gl_shader_stage).
 639  */
 640 extern const char *
 641 _mesa_shader_stage_to_string(unsigned stage);
 642
 643 extern const char *
 644 _mesa_shader_stage_to_abbrev(unsigned stage);
 645
 646 extern int glcpp_preprocess(void *ctx, const char **shader, char **info_log,
 647                       const struct gl_extensions *extensions, struct gl_context *gl_ctx);
 648
 649 extern void _mesa_destroy_shader_compiler(void);
 650 extern void _mesa_destroy_shader_compiler_caches(void);
 651
 652 #ifdef __cplusplus
 653 }
 654 #endif
 655
 656
 657 #endif /* GLSL_PARSER_EXTRAS_H */