src/mesa/main/get.c

   1 /*
   2  * Copyright (C) 2010  Brian Paul   All Rights Reserved.
   3  * Copyright (C) 2010  Intel Corporation
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included
  13  * in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  19  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  20  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Author: Kristian Høgsberg <krh@bitplanet.net>
  23  */
  24
  25 #include "glheader.h"
  26 #include "context.h"
  27 #include "enable.h"
  28 #include "enums.h"
  29 #include "extensions.h"
  30 #include "get.h"
  31 #include "macros.h"
  32 #include "mfeatures.h"
  33 #include "mtypes.h"
  34 #include "state.h"
  35 #include "texcompress.h"
  36 #include "framebuffer.h"
  37
  38 /* This is a table driven implemetation of the glGet*v() functions.
  39  * The basic idea is that most getters just look up an int somewhere
  40  * in struct gl_context and then convert it to a bool or float according to
  41  * which of glGetIntegerv() glGetBooleanv() etc is being called.
  42  * Instead of generating code to do this, we can just record the enum
  43  * value and the offset into struct gl_context in an array of structs.  Then
  44  * in glGet*(), we lookup the struct for the enum in question, and use
  45  * the offset to get the int we need.
  46  *
  47  * Sometimes we need to look up a float, a boolean, a bit in a
  48  * bitfield, a matrix or other types instead, so we need to track the
  49  * type of the value in struct gl_context.  And sometimes the value isn't in
  50  * struct gl_context but in the drawbuffer, the array object, current texture
  51  * unit, or maybe it's a computed value.  So we need to also track
  52  * where or how to find the value.  Finally, we sometimes need to
  53  * check that one of a number of extensions are enabled, the GL
  54  * version or flush or call _mesa_update_state().  This is done by
  55  * attaching optional extra information to the value description
  56  * struct, it's sort of like an array of opcodes that describe extra
  57  * checks or actions.
  58  *
  59  * Putting all this together we end up with struct value_desc below,
  60  * and with a couple of macros to help, the table of struct value_desc
  61  * is about as concise as the specification in the old python script.
  62  */
  63
  64 #undef CONST
  65
  66 #define FLOAT_TO_BOOLEAN(X)   ( (X) ? GL_TRUE : GL_FALSE )
  67 #define FLOAT_TO_FIXED(F)     ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
  68                                 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
  69                                 (GLint) ((F) * 65536.0f) )
  70
  71 #define INT_TO_BOOLEAN(I)     ( (I) ? GL_TRUE : GL_FALSE )
  72 #define INT_TO_FIXED(I)       ( ((I) > SHRT_MAX) ? INT_MAX : \
  73                                 ((I) < SHRT_MIN) ? INT_MIN : \
  74                                 (GLint) ((I) * 65536) )
  75
  76 #define INT64_TO_BOOLEAN(I)   ( (I) ? GL_TRUE : GL_FALSE )
  77 #define INT64_TO_INT(I)       ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
  78
  79 #define BOOLEAN_TO_INT(B)     ( (GLint) (B) )
  80 #define BOOLEAN_TO_INT64(B)   ( (GLint64) (B) )
  81 #define BOOLEAN_TO_FLOAT(B)   ( (B) ? 1.0F : 0.0F )
  82 #define BOOLEAN_TO_FIXED(B)   ( (GLint) ((B) ? 1 : 0) << 16 )
  83
  84 #define ENUM_TO_INT64(E)      ( (GLint64) (E) )
  85 #define ENUM_TO_FIXED(E)      (E)
  86
  87 enum value_type {
  88    TYPE_INVALID,
  89    TYPE_API_MASK,
  90    TYPE_INT,
  91    TYPE_INT_2,
  92    TYPE_INT_3,
  93    TYPE_INT_4,
  94    TYPE_INT_N,
  95    TYPE_INT64,
  96    TYPE_ENUM,
  97    TYPE_ENUM_2,
  98    TYPE_BOOLEAN,
  99    TYPE_BIT_0,
 100    TYPE_BIT_1,
 101    TYPE_BIT_2,
 102    TYPE_BIT_3,
 103    TYPE_BIT_4,
 104    TYPE_BIT_5,
 105    TYPE_BIT_6,
 106    TYPE_BIT_7,
 107    TYPE_FLOAT,
 108    TYPE_FLOAT_2,
 109    TYPE_FLOAT_3,
 110    TYPE_FLOAT_4,
 111    TYPE_FLOATN,
 112    TYPE_FLOATN_2,
 113    TYPE_FLOATN_3,
 114    TYPE_FLOATN_4,
 115    TYPE_DOUBLEN,
 116    TYPE_MATRIX,
 117    TYPE_MATRIX_T,
 118    TYPE_CONST
 119 };
 120
 121 enum value_location {
 122    LOC_BUFFER,
 123    LOC_CONTEXT,
 124    LOC_ARRAY,
 125    LOC_TEXUNIT,
 126    LOC_CUSTOM
 127 };
 128
 129 enum value_extra {
 130    EXTRA_END = 0x8000,
 131    EXTRA_VERSION_30,
 132    EXTRA_VERSION_31,
 133    EXTRA_VERSION_32,
 134    EXTRA_API_GL,
 135    EXTRA_API_ES2,
 136    EXTRA_NEW_BUFFERS,
 137    EXTRA_NEW_FRAG_CLAMP,
 138    EXTRA_VALID_DRAW_BUFFER,
 139    EXTRA_VALID_TEXTURE_UNIT,
 140    EXTRA_VALID_CLIP_DISTANCE,
 141    EXTRA_FLUSH_CURRENT,
 142    EXTRA_GLSL_130,
 143 };
 144
 145 #define NO_EXTRA NULL
 146 #define NO_OFFSET 0
 147
 148 struct value_desc {
 149    GLenum pname;
 150    GLubyte location;  /**< enum value_location */
 151    GLubyte type;      /**< enum value_type */
 152    int offset;
 153    const int *extra;
 154 };
 155
 156 union value {
 157    GLfloat value_float;
 158    GLfloat value_float_4[4];
 159    GLmatrix *value_matrix;
 160    GLint value_int;
 161    GLint value_int_4[4];
 162    GLint64 value_int64;
 163    GLenum value_enum;
 164
 165    /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
 166    struct {
 167       GLint n, ints[100];
 168    } value_int_n;
 169    GLboolean value_bool;
 170 };
 171
 172 #define BUFFER_FIELD(field, type) \
 173    LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
 174 #define CONTEXT_FIELD(field, type) \
 175    LOC_CONTEXT, type, offsetof(struct gl_context, field)
 176 #define ARRAY_FIELD(field, type) \
 177    LOC_ARRAY, type, offsetof(struct gl_array_object, field)
 178 #define CONST(value) \
 179    LOC_CONTEXT, TYPE_CONST, value
 180
 181 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
 182 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
 183 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
 184
 185 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
 186 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
 187 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
 188 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
 189 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
 190 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
 191 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
 192 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
 193 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
 194 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
 195 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
 196 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
 197 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
 198 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
 199 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
 200 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
 201 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
 202 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
 203 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
 204 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
 205
 206 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
 207 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
 208 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
 209
 210 #define EXT(f)                                  \
 211    offsetof(struct gl_extensions, f)
 212
 213 #define EXTRA_EXT(e)                            \
 214    static const int extra_##e[] = {             \
 215       EXT(e), EXTRA_END                         \
 216    }
 217
 218 #define EXTRA_EXT2(e1, e2)                      \
 219    static const int extra_##e1##_##e2[] = {     \
 220       EXT(e1), EXT(e2), EXTRA_END               \
 221    }
 222
 223 /* The 'extra' mechanism is a way to specify extra checks (such as
 224  * extensions or specific gl versions) or actions (flush current, new
 225  * buffers) that we need to do before looking up an enum.  We need to
 226  * declare them all up front so we can refer to them in the value_desc
 227  * structs below. */
 228
 229 static const int extra_new_buffers[] = {
 230    EXTRA_NEW_BUFFERS,
 231    EXTRA_END
 232 };
 233
 234 static const int extra_new_frag_clamp[] = {
 235    EXTRA_NEW_FRAG_CLAMP,
 236    EXTRA_END
 237 };
 238
 239 static const int extra_valid_draw_buffer[] = {
 240    EXTRA_VALID_DRAW_BUFFER,
 241    EXTRA_END
 242 };
 243
 244 static const int extra_valid_texture_unit[] = {
 245    EXTRA_VALID_TEXTURE_UNIT,
 246    EXTRA_END
 247 };
 248
 249 static const int extra_valid_clip_distance[] = {
 250    EXTRA_VALID_CLIP_DISTANCE,
 251    EXTRA_END
 252 };
 253
 254 static const int extra_flush_current_valid_texture_unit[] = {
 255    EXTRA_FLUSH_CURRENT,
 256    EXTRA_VALID_TEXTURE_UNIT,
 257    EXTRA_END
 258 };
 259
 260 static const int extra_flush_current[] = {
 261    EXTRA_FLUSH_CURRENT,
 262    EXTRA_END
 263 };
 264
 265 static const int extra_EXT_secondary_color_flush_current[] = {
 266    EXT(EXT_secondary_color),
 267    EXTRA_FLUSH_CURRENT,
 268    EXTRA_END
 269 };
 270
 271 static const int extra_EXT_fog_coord_flush_current[] = {
 272    EXT(EXT_fog_coord),
 273    EXTRA_FLUSH_CURRENT,
 274    EXTRA_END
 275 };
 276
 277 static const int extra_EXT_texture_integer[] = {
 278    EXT(EXT_texture_integer),
 279    EXTRA_END
 280 };
 281
 282 static const int extra_GLSL_130[] = {
 283    EXTRA_GLSL_130,
 284    EXTRA_END
 285 };
 286
 287 static const int extra_texture_buffer_object[] = {
 288    EXTRA_VERSION_31,
 289    EXT(ARB_texture_buffer_object),
 290    EXTRA_END
 291 };
 292
 293 static const int extra_ARB_uniform_buffer_object_and_geometry_shader[] = {
 294    EXT(ARB_uniform_buffer_object),
 295    EXT(ARB_geometry_shader4),
 296    EXTRA_END
 297 };
 298
 299
 300 EXTRA_EXT(ARB_ES2_compatibility);
 301 EXTRA_EXT(ARB_texture_cube_map);
 302 EXTRA_EXT(MESA_texture_array);
 303 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
 304 EXTRA_EXT(EXT_secondary_color);
 305 EXTRA_EXT(EXT_fog_coord);
 306 EXTRA_EXT(NV_fog_distance);
 307 EXTRA_EXT(EXT_texture_filter_anisotropic);
 308 EXTRA_EXT(IBM_rasterpos_clip);
 309 EXTRA_EXT(NV_point_sprite);
 310 EXTRA_EXT(NV_vertex_program);
 311 EXTRA_EXT(NV_fragment_program);
 312 EXTRA_EXT(NV_texture_rectangle);
 313 EXTRA_EXT(EXT_stencil_two_side);
 314 EXTRA_EXT(NV_light_max_exponent);
 315 EXTRA_EXT(EXT_depth_bounds_test);
 316 EXTRA_EXT(ARB_depth_clamp);
 317 EXTRA_EXT(ATI_fragment_shader);
 318 EXTRA_EXT(EXT_framebuffer_blit);
 319 EXTRA_EXT(ARB_shader_objects);
 320 EXTRA_EXT(EXT_provoking_vertex);
 321 EXTRA_EXT(ARB_fragment_shader);
 322 EXTRA_EXT(ARB_fragment_program);
 323 EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);
 324 EXTRA_EXT(EXT_framebuffer_object);
 325 EXTRA_EXT(APPLE_vertex_array_object);
 326 EXTRA_EXT(ARB_seamless_cube_map);
 327 EXTRA_EXT(EXT_compiled_vertex_array);
 328 EXTRA_EXT(ARB_sync);
 329 EXTRA_EXT(ARB_vertex_shader);
 330 EXTRA_EXT(EXT_transform_feedback);
 331 EXTRA_EXT(ARB_transform_feedback2);
 332 EXTRA_EXT(ARB_transform_feedback3);
 333 EXTRA_EXT(EXT_pixel_buffer_object);
 334 EXTRA_EXT(ARB_vertex_program);
 335 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
 336 EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);
 337 EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);
 338 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
 339 EXTRA_EXT(ARB_geometry_shader4);
 340 EXTRA_EXT(ARB_color_buffer_float);
 341 EXTRA_EXT(ARB_copy_buffer);
 342 EXTRA_EXT(EXT_framebuffer_sRGB);
 343 EXTRA_EXT(ARB_texture_buffer_object);
 344 EXTRA_EXT(OES_EGL_image_external);
 345 EXTRA_EXT(ARB_blend_func_extended);
 346 EXTRA_EXT(ARB_uniform_buffer_object);
 347 EXTRA_EXT(ARB_timer_query);
 348
 349 static const int
 350 extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 351    EXT(ARB_vertex_program),
 352    EXT(ARB_fragment_program),
 353    EXT(NV_vertex_program),
 354    EXTRA_END
 355 };
 356
 357 static const int
 358 extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 359    EXT(NV_vertex_program),
 360    EXT(ARB_vertex_program),
 361    EXT(ARB_fragment_program),
 362    EXT(NV_vertex_program),
 363    EXTRA_END
 364 };
 365
 366 static const int
 367 extra_NV_primitive_restart[] = {
 368    EXT(NV_primitive_restart),
 369    EXTRA_END
 370 };
 371
 372 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
 373 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
 374 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
 375
 376 static const int
 377 extra_ARB_vertex_program_api_es2[] = {
 378    EXT(ARB_vertex_program),
 379    EXTRA_API_ES2,
 380    EXTRA_END
 381 };
 382
 383 /* The ReadBuffer get token is valid under either full GL or under
 384  * GLES2 if the NV_read_buffer extension is available. */
 385 static const int
 386 extra_NV_read_buffer_api_gl[] = {
 387    EXT(NV_read_buffer),
 388    EXTRA_API_GL,
 389    EXTRA_END
 390 };
 391
 392 #define API_OPENGL_BIT (1 << API_OPENGL)
 393 #define API_OPENGLES_BIT (1 << API_OPENGLES)
 394 #define API_OPENGLES2_BIT (1 << API_OPENGLES2)
 395 #define API_OPENGL_CORE_BIT (1 << API_OPENGL_CORE)
 396
 397 /* This is the big table describing all the enums we accept in
 398  * glGet*v().  The table is partitioned into six parts: enums
 399  * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
 400  * between OpenGL and GLES, enums exclusive to GLES, etc for the
 401  * remaining combinations.  When we add the enums to the hash table in
 402  * _mesa_init_get_hash(), we only add the enums for the API we're
 403  * instantiating and the different sections are guarded by #if
 404  * FEATURE_GL etc to make sure we only compile in the enums we may
 405  * need. */
 406
 407 static const struct value_desc values[] = {
 408    /* Enums shared between OpenGL, GLES1 and GLES2 */
 409    { 0, 0, TYPE_API_MASK,
 410      API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGLES2_BIT |
 411        API_OPENGL_CORE_BIT,
 412      NO_EXTRA},
 413    { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },
 414    { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled), NO_EXTRA },
 415    { GL_BLEND_SRC, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
 416    { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },
 417    { GL_COLOR_CLEAR_VALUE, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 418    { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 419    { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag), NO_EXTRA },
 420    { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode), NO_EXTRA },
 421    { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits), NO_EXTRA },
 422    { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN), NO_EXTRA },
 423    { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func), NO_EXTRA },
 424    { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2), NO_EXTRA },
 425    { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test), NO_EXTRA },
 426    { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask), NO_EXTRA },
 427    { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag), NO_EXTRA },
 428    { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace), NO_EXTRA },
 429    { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },
 430    { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width), NO_EXTRA },
 431    { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth), NO_EXTRA },
 432    { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 433    { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 434    { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 435      offsetof(struct gl_context, Const.MaxTextureLevels), NO_EXTRA },
 436    { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth), NO_EXTRA },
 437    { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment), NO_EXTRA },
 438    { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize), NO_EXTRA },
 439    { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ), NO_EXTRA },
 440    { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ), NO_EXTRA },
 441    { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill), NO_EXTRA },
 442    { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },
 443    { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 444    { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled), NO_EXTRA },
 445    { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits), NO_EXTRA },
 446    { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear), NO_EXTRA },
 447    { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 448    { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 449    { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 450    { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 451    { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 452    { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled), NO_EXTRA },
 453    { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 454    { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 455    { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits), NO_EXTRA },
 456    { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX, NO_EXTRA },
 457    { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment), NO_EXTRA },
 458    { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 459
 460    /* GL_ARB_multitexture */
 461    { GL_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 462
 463    /* Note that all the OES_* extensions require that the Mesa "struct
 464     * gl_extensions" include a member with the name of the extension.
 465     * That structure does not yet include OES extensions (and we're
 466     * not sure whether it will).  If it does, all the OES_*
 467     * extensions below should mark the dependency. */
 468
 469    /* GL_ARB_texture_cube_map */
 470    { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,
 471      TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },
 472    { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,
 473      offsetof(struct gl_context, Const.MaxCubeTextureLevels),
 474      extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */
 475
 476    /* XXX: OES_blend_subtract */
 477    { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
 478    { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
 479    { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].SrcA), NO_EXTRA },
 480    { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].DstA), NO_EXTRA },
 481
 482    /* GL_BLEND_EQUATION_RGB, which is what we're really after, is
 483     * defined identically to GL_BLEND_EQUATION. */
 484    { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.Blend[0].EquationRGB), NO_EXTRA },
 485    { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].EquationA), NO_EXTRA },
 486
 487    /* GL_ARB_texture_compression */
 488    { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 489    { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0, NO_EXTRA },
 490
 491    /* GL_ARB_multisample */
 492    { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,
 493      CONTEXT_BOOL(Multisample.SampleAlphaToCoverage), NO_EXTRA },
 494    { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage), NO_EXTRA },
 495    { GL_SAMPLE_COVERAGE_VALUE_ARB,
 496      CONTEXT_FLOAT(Multisample.SampleCoverageValue), NO_EXTRA },
 497    { GL_SAMPLE_COVERAGE_INVERT_ARB,
 498      CONTEXT_BOOL(Multisample.SampleCoverageInvert), NO_EXTRA },
 499    { GL_SAMPLE_BUFFERS_ARB, BUFFER_INT(Visual.sampleBuffers), NO_EXTRA },
 500    { GL_SAMPLES_ARB, BUFFER_INT(Visual.samples), NO_EXTRA },
 501
 502    /* GL_SGIS_generate_mipmap */
 503    { GL_GENERATE_MIPMAP_HINT_SGIS, CONTEXT_ENUM(Hint.GenerateMipmap), NO_EXTRA },
 504
 505    /* GL_ARB_vertex_buffer_object */
 506    { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 507
 508    /* GL_ARB_vertex_buffer_object */
 509    /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */
 510    { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 511
 512    /* GL_ARB_color_buffer_float */
 513    { GL_CLAMP_VERTEX_COLOR, CONTEXT_ENUM(Light.ClampVertexColor), extra_ARB_color_buffer_float },
 514    { GL_CLAMP_FRAGMENT_COLOR, CONTEXT_ENUM(Color.ClampFragmentColor), extra_ARB_color_buffer_float },
 515    { GL_CLAMP_READ_COLOR, CONTEXT_ENUM(Color.ClampReadColor), extra_ARB_color_buffer_float },
 516
 517    /* GL_ARB_copy_buffer */
 518    { GL_COPY_READ_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
 519    { GL_COPY_WRITE_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
 520
 521    /* GL_OES_read_format */
 522    { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,
 523      extra_new_buffers },
 524    { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,
 525      extra_new_buffers },
 526
 527    /* GL_EXT_framebuffer_object */
 528    { GL_FRAMEBUFFER_BINDING_EXT, BUFFER_INT(Name),
 529      extra_EXT_framebuffer_object },
 530    { GL_RENDERBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
 531      extra_EXT_framebuffer_object },
 532    { GL_MAX_RENDERBUFFER_SIZE_EXT, CONTEXT_INT(Const.MaxRenderbufferSize),
 533      extra_EXT_framebuffer_object },
 534
 535    /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's
 536     * GLSL: */
 537    { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes), NO_EXTRA },
 538
 539 #if FEATURE_GL || FEATURE_ES1
 540    /* Enums in OpenGL and GLES1 */
 541    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGL_CORE_BIT, NO_EXTRA },
 542    { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights), NO_EXTRA },
 543    { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled), NO_EXTRA },
 544    { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled), NO_EXTRA },
 545    { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled), NO_EXTRA },
 546    { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled), NO_EXTRA },
 547    { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled), NO_EXTRA },
 548    { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled), NO_EXTRA },
 549    { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled), NO_EXTRA },
 550    { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled), NO_EXTRA },
 551    { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled), NO_EXTRA },
 552    { GL_LIGHT_MODEL_AMBIENT,
 553      CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4), NO_EXTRA },
 554    { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide), NO_EXTRA },
 555    { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled), NO_EXTRA },
 556    { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc), NO_EXTRA },
 557    { GL_ALPHA_TEST_REF, LOC_CUSTOM, TYPE_FLOATN, 0, extra_new_frag_clamp },
 558    { GL_BLEND_DST, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
 559    { GL_CLIP_DISTANCE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 560    { GL_CLIP_DISTANCE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 561    { GL_CLIP_DISTANCE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 562    { GL_CLIP_DISTANCE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 563    { GL_CLIP_DISTANCE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 564    { GL_CLIP_DISTANCE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 565    { GL_CLIP_DISTANCE6, CONTEXT_BIT6(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 566    { GL_CLIP_DISTANCE7, CONTEXT_BIT7(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 567    { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled), NO_EXTRA },
 568    { GL_CURRENT_COLOR,
 569      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),
 570      extra_flush_current },
 571    { GL_CURRENT_NORMAL,
 572      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),
 573      extra_flush_current },
 574    { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 575      extra_flush_current_valid_texture_unit },
 576    { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]), NO_EXTRA },
 577    { GL_FOG, CONTEXT_BOOL(Fog.Enabled), NO_EXTRA },
 578    { GL_FOG_COLOR, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 579    { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density), NO_EXTRA },
 580    { GL_FOG_END, CONTEXT_FLOAT(Fog.End), NO_EXTRA },
 581    { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog), NO_EXTRA },
 582    { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode), NO_EXTRA },
 583    { GL_FOG_START, CONTEXT_FLOAT(Fog.Start), NO_EXTRA },
 584    { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag), NO_EXTRA },
 585    { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth), NO_EXTRA },
 586    { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA), NO_EXTRA },
 587    { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled), NO_EXTRA },
 588    { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp), NO_EXTRA },
 589    { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode), NO_EXTRA },
 590    { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH), NO_EXTRA },
 591    { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH), NO_EXTRA },
 592    { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), NO_EXTRA },
 593    { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top), NO_EXTRA },
 594    { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 595      offsetof(struct gl_context, ModelviewMatrixStack.Depth), NO_EXTRA },
 596    { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize), NO_EXTRA },
 597    { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages), NO_EXTRA },
 598    { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection), NO_EXTRA },
 599    { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size), NO_EXTRA },
 600    { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA), NO_EXTRA },
 601    { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag), NO_EXTRA },
 602    { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth), NO_EXTRA },
 603    { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize), NO_EXTRA },
 604    { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize), NO_EXTRA },
 605    { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold), NO_EXTRA },
 606    { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top), NO_EXTRA },
 607    { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 608      offsetof(struct gl_context, ProjectionMatrixStack.Depth), NO_EXTRA },
 609    { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals), NO_EXTRA },
 610    { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel), NO_EXTRA },
 611    { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 612    { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },
 613    { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,
 614      extra_valid_texture_unit  },
 615
 616    { GL_VERTEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_POS].Enabled), NO_EXTRA },
 617    { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Size), NO_EXTRA },
 618    { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_POS].Type), NO_EXTRA },
 619    { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Stride), NO_EXTRA },
 620    { GL_NORMAL_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_NORMAL].Enabled), NO_EXTRA },
 621    { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_NORMAL].Type), NO_EXTRA },
 622    { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_NORMAL].Stride), NO_EXTRA },
 623    { GL_COLOR_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR0].Enabled), NO_EXTRA },
 624    { GL_COLOR_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Size), NO_EXTRA },
 625    { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR0].Type), NO_EXTRA },
 626    { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Stride), NO_EXTRA },
 627    { GL_TEXTURE_COORD_ARRAY,
 628      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled), NO_EXTRA },
 629    { GL_TEXTURE_COORD_ARRAY_SIZE,
 630      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Size), NO_EXTRA },
 631    { GL_TEXTURE_COORD_ARRAY_TYPE,
 632      LOC_CUSTOM, TYPE_ENUM, offsetof(struct gl_client_array, Type), NO_EXTRA },
 633    { GL_TEXTURE_COORD_ARRAY_STRIDE,
 634      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Stride), NO_EXTRA },
 635
 636    /* GL_ARB_ES2_compatibility */
 637    { GL_SHADER_COMPILER, CONST(1), extra_ARB_ES2_compatibility },
 638    { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying),
 639      extra_ARB_ES2_compatibility },
 640    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
 641      extra_ARB_ES2_compatibility },
 642    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
 643      extra_ARB_ES2_compatibility },
 644
 645    /* GL_ARB_multitexture */
 646    { GL_MAX_TEXTURE_UNITS, CONTEXT_INT(Const.MaxTextureUnits), NO_EXTRA },
 647    { GL_CLIENT_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 648
 649    /* GL_ARB_texture_cube_map */
 650    { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 651    /* S, T, and R are always set at the same time */
 652    { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,
 653      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 654
 655    /* GL_ARB_multisample */
 656    { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled), NO_EXTRA },
 657    { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne), NO_EXTRA },
 658
 659    /* GL_ARB_vertex_buffer_object */
 660    { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 661      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_POS].BufferObj), NO_EXTRA },
 662    { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 663      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_NORMAL].BufferObj), NO_EXTRA },
 664    { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 665      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR0].BufferObj), NO_EXTRA },
 666    { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 667
 668    /* GL_OES_point_sprite */
 669    { GL_POINT_SPRITE_NV,
 670      CONTEXT_BOOL(Point.PointSprite),
 671      extra_NV_point_sprite_ARB_point_sprite },
 672
 673    /* GL_ARB_fragment_shader */
 674    { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,
 675      CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),
 676      extra_ARB_fragment_shader },
 677
 678    /* GL_ARB_vertex_shader */
 679    { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,
 680      CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),
 681      extra_ARB_vertex_shader },
 682    { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,
 683      extra_ARB_vertex_shader },
 684
 685    /* GL_EXT_texture_lod_bias */
 686    { GL_MAX_TEXTURE_LOD_BIAS_EXT, CONTEXT_FLOAT(Const.MaxTextureLodBias),
 687      NO_EXTRA },
 688
 689    /* GL_EXT_texture_filter_anisotropic */
 690    { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
 691      CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),
 692      extra_EXT_texture_filter_anisotropic },
 693 #endif /* FEATURE_GL || FEATURE_ES1 */
 694
 695 #if FEATURE_ES1
 696    { 0, 0, TYPE_API_MASK, API_OPENGLES_BIT },
 697    /* XXX: OES_matrix_get */
 698    { GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES },
 699    { GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES },
 700    { GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES },
 701
 702    /* OES_point_size_array */
 703    { GL_POINT_SIZE_ARRAY_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Enabled, TYPE_BOOLEAN) },
 704    { GL_POINT_SIZE_ARRAY_TYPE_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Type, TYPE_ENUM) },
 705    { GL_POINT_SIZE_ARRAY_STRIDE_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Stride, TYPE_INT) },
 706    { GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES, LOC_CUSTOM, TYPE_INT, 0 },
 707 #endif /* FEATURE_ES1 */
 708
 709 #if FEATURE_GL || FEATURE_ES2
 710    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGL_CORE_BIT | API_OPENGLES2_BIT, NO_EXTRA },
 711    { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */
 712      CONTEXT_INT(Const.MaxTextureCoordUnits),
 713      extra_ARB_fragment_program_NV_fragment_program },
 714    { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight), NO_EXTRA },
 715    { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength), NO_EXTRA },
 716    { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels), NO_EXTRA },
 717    { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows), NO_EXTRA },
 718    { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength), NO_EXTRA },
 719    { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels), NO_EXTRA },
 720    { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows), NO_EXTRA },
 721    { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages), NO_EXTRA },
 722    { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight), NO_EXTRA },
 723
 724    /* GL_ARB_draw_buffers */
 725    { GL_MAX_DRAW_BUFFERS_ARB, CONTEXT_INT(Const.MaxDrawBuffers), NO_EXTRA },
 726
 727    /* GL_EXT_framebuffer_object / GL_NV_fbo_color_attachments */
 728    { GL_MAX_COLOR_ATTACHMENTS, CONTEXT_INT(Const.MaxColorAttachments),
 729      extra_EXT_framebuffer_object },
 730
 731    /* GL_ARB_draw_buffers / GL_NV_draw_buffers (for ES 2.0) */
 732    { GL_DRAW_BUFFER0_ARB, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
 733    { GL_DRAW_BUFFER1_ARB, BUFFER_ENUM(ColorDrawBuffer[1]),
 734      extra_valid_draw_buffer },
 735    { GL_DRAW_BUFFER2_ARB, BUFFER_ENUM(ColorDrawBuffer[2]),
 736      extra_valid_draw_buffer },
 737    { GL_DRAW_BUFFER3_ARB, BUFFER_ENUM(ColorDrawBuffer[3]),
 738      extra_valid_draw_buffer },
 739    { GL_DRAW_BUFFER4_ARB, BUFFER_ENUM(ColorDrawBuffer[4]),
 740      extra_valid_draw_buffer },
 741    { GL_DRAW_BUFFER5_ARB, BUFFER_ENUM(ColorDrawBuffer[5]),
 742      extra_valid_draw_buffer },
 743    { GL_DRAW_BUFFER6_ARB, BUFFER_ENUM(ColorDrawBuffer[6]),
 744      extra_valid_draw_buffer },
 745    { GL_DRAW_BUFFER7_ARB, BUFFER_ENUM(ColorDrawBuffer[7]),
 746      extra_valid_draw_buffer },
 747
 748    { GL_BLEND_COLOR_EXT, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 749    /* GL_ARB_fragment_program */
 750    { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */
 751      CONTEXT_INT(Const.MaxTextureImageUnits),
 752      extra_ARB_fragment_program_NV_fragment_program },
 753    { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,
 754      CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },
 755    { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,
 756      CONTEXT_INT(Const.MaxCombinedTextureImageUnits),
 757      extra_ARB_vertex_shader },
 758
 759    /* GL_ARB_shader_objects
 760     * Actually, this token isn't part of GL_ARB_shader_objects, but is
 761     * close enough for now. */
 762    { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },
 763
 764    /* OpenGL 2.0 */
 765    { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]), NO_EXTRA },
 766    { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]), NO_EXTRA },
 767    { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]), NO_EXTRA },
 768    { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]), NO_EXTRA },
 769    { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]), NO_EXTRA },
 770    { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]), NO_EXTRA },
 771    { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]), NO_EXTRA },
 772
 773    { GL_MAX_VERTEX_ATTRIBS_ARB,
 774      CONTEXT_INT(Const.VertexProgram.MaxAttribs),
 775      extra_ARB_vertex_program_api_es2 },
 776
 777    /* OES_texture_3D */
 778    { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX, NO_EXTRA },
 779    { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 780      offsetof(struct gl_context, Const.Max3DTextureLevels), NO_EXTRA },
 781
 782    /* GL_ARB_fragment_program/OES_standard_derivatives */
 783    { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,
 784      CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },
 785
 786    /* GL_NV_read_buffer */
 787    { GL_READ_BUFFER,
 788      LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, extra_NV_read_buffer_api_gl },
 789
 790 #endif /* FEATURE_GL || FEATURE_ES2 */
 791
 792 #if FEATURE_ES2
 793    /* Enums unique to OpenGL ES 2.0 */
 794    { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },
 795    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 796    { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },
 797    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 798    { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },
 799    /* OES_get_program_binary */
 800    { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 801    { GL_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 802 #endif /* FEATURE_ES2 */
 803
 804    /* GL_OES_EGL_image_external */
 805    { GL_TEXTURE_BINDING_EXTERNAL_OES, LOC_CUSTOM,
 806      TYPE_INT, TEXTURE_EXTERNAL_INDEX, extra_OES_EGL_image_external },
 807    { GL_TEXTURE_EXTERNAL_OES, LOC_CUSTOM,
 808      TYPE_BOOLEAN, 0, extra_OES_EGL_image_external },
 809
 810 #if FEATURE_GL
 811    /* Remaining enums are only in OpenGL */
 812    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGL_CORE_BIT, NO_EXTRA },
 813    { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },
 814    { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },
 815    { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },
 816    { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },
 817    { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
 818    { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },
 819    { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },
 820    { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },
 821    { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },
 822    { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },
 823    { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },
 824    { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },
 825    { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },
 826    { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },
 827    { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },
 828    { GL_CURRENT_INDEX,
 829      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
 830      extra_flush_current },
 831    { GL_CURRENT_RASTER_COLOR,
 832      CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },
 833    { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },
 834    { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },
 835    { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },
 836    { GL_CURRENT_RASTER_SECONDARY_COLOR,
 837      CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },
 838    { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 839      extra_valid_texture_unit },
 840    { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },
 841    { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },
 842    { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },
 843    { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },
 844    { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
 845    { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 846    { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },
 847    { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },
 848    { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },
 849    { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },
 850    { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },
 851    { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
 852    { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },
 853    { GL_INDEX_MODE, CONST(0) , NO_EXTRA},
 854    { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },
 855    { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },
 856    { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },
 857    { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },
 858    { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },
 859    { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },
 860    { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 861    { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },
 862    { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },
 863    { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },
 864    { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 865    { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },
 866    { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },
 867    { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },
 868    { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },
 869    { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },
 870    { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },
 871    { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },
 872    { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },
 873    { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },
 874    { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },
 875    { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },
 876    { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },
 877    { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },
 878    { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },
 879    { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },
 880    { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },
 881    { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },
 882    { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },
 883    { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },
 884    { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },
 885    { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },
 886    { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },
 887    { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },
 888    { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },
 889    { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },
 890    { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },
 891    { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },
 892    { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },
 893
 894    { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },
 895    { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },
 896    { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },
 897    { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },
 898    { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },
 899    { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },
 900    { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },
 901    { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },
 902    { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },
 903    { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },
 904    { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },
 905    { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },
 906    { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },
 907    { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },
 908    { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },
 909    { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },
 910    { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },
 911    { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },
 912    { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },
 913    { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },
 914    { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },
 915    { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },
 916    { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },
 917    { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },
 918    { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },
 919    { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },
 920    { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },
 921    { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },
 922    { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },
 923    { GL_RGBA_MODE, CONST(1), NO_EXTRA },
 924    { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },
 925
 926    { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },
 927
 928    { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 929    { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 930    { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 931    { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 932
 933    { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },
 934    { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,
 935      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 936    { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,
 937      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 938    { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,
 939      CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },
 940
 941    { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
 942      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 943    { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
 944      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 945    { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
 946      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 947    { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
 948      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 949    { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },
 950    { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },
 951    { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },
 952    { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },
 953
 954    /* Vertex arrays */
 955    { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 956    { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 957    { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 958    { GL_INDEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled), NO_EXTRA },
 959    { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Type), NO_EXTRA },
 960    { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Stride), NO_EXTRA },
 961    { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 962    { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 963    { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled), NO_EXTRA },
 964    { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Stride), NO_EXTRA },
 965    { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 966
 967    /* GL_ARB_texture_compression */
 968    { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression), NO_EXTRA },
 969
 970    /* GL_EXT_compiled_vertex_array */
 971    { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
 972      extra_EXT_compiled_vertex_array },
 973    { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
 974      extra_EXT_compiled_vertex_array },
 975
 976    /* GL_ARB_transpose_matrix */
 977    { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
 978      CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },
 979    { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
 980      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
 981    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
 982
 983    /* GL_EXT_secondary_color */
 984    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
 985      extra_EXT_secondary_color_ARB_vertex_program },
 986    { GL_CURRENT_SECONDARY_COLOR_EXT,
 987      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
 988      extra_EXT_secondary_color_flush_current },
 989    { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR1].Enabled),
 990      extra_EXT_secondary_color },
 991    { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR1].Type),
 992      extra_EXT_secondary_color },
 993    { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Stride),
 994      extra_EXT_secondary_color },
 995    { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Size),
 996      extra_EXT_secondary_color },
 997
 998    /* GL_EXT_fog_coord */
 999    { GL_CURRENT_FOG_COORDINATE_EXT,
1000      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
1001      extra_EXT_fog_coord_flush_current },
1002    { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_FOG].Enabled),
1003      extra_EXT_fog_coord },
1004    { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_FOG].Type),
1005      extra_EXT_fog_coord },
1006    { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_FOG].Stride),
1007      extra_EXT_fog_coord },
1008    { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
1009      extra_EXT_fog_coord },
1010
1011    /* GL_NV_fog_distance */
1012    { GL_FOG_DISTANCE_MODE_NV, CONTEXT_ENUM(Fog.FogDistanceMode),
1013      extra_NV_fog_distance },
1014
1015    /* GL_IBM_rasterpos_clip */
1016    { GL_RASTER_POSITION_UNCLIPPED_IBM,
1017      CONTEXT_BOOL(Transform.RasterPositionUnclipped),
1018      extra_IBM_rasterpos_clip },
1019
1020    /* GL_NV_point_sprite */
1021    { GL_POINT_SPRITE_R_MODE_NV,
1022      CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
1023    { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
1024      extra_NV_point_sprite_ARB_point_sprite },
1025
1026    /* GL_NV_vertex_program */
1027    { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1028      extra_NV_vertex_program },
1029    { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(0)].Enabled),
1030      extra_NV_vertex_program },
1031    { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(1)].Enabled),
1032      extra_NV_vertex_program },
1033    { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(2)].Enabled),
1034      extra_NV_vertex_program },
1035    { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(3)].Enabled),
1036      extra_NV_vertex_program },
1037    { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(4)].Enabled),
1038      extra_NV_vertex_program },
1039    { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(5)].Enabled),
1040      extra_NV_vertex_program },
1041    { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(6)].Enabled),
1042      extra_NV_vertex_program },
1043    { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(7)].Enabled),
1044      extra_NV_vertex_program },
1045    { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(8)].Enabled),
1046      extra_NV_vertex_program },
1047    { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(9)].Enabled),
1048      extra_NV_vertex_program },
1049    { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(10)].Enabled),
1050      extra_NV_vertex_program },
1051    { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(11)].Enabled),
1052      extra_NV_vertex_program },
1053    { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(12)].Enabled),
1054      extra_NV_vertex_program },
1055    { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(13)].Enabled),
1056      extra_NV_vertex_program },
1057    { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(14)].Enabled),
1058      extra_NV_vertex_program },
1059    { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(15)].Enabled),
1060      extra_NV_vertex_program },
1061    { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
1062      extra_NV_vertex_program },
1063    { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
1064      extra_NV_vertex_program },
1065    { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
1066      extra_NV_vertex_program },
1067    { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
1068      extra_NV_vertex_program },
1069    { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
1070      extra_NV_vertex_program },
1071    { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
1072      extra_NV_vertex_program },
1073    { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
1074      extra_NV_vertex_program },
1075    { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
1076      extra_NV_vertex_program },
1077    { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
1078      extra_NV_vertex_program },
1079    { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
1080      extra_NV_vertex_program },
1081    { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
1082      extra_NV_vertex_program },
1083    { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
1084      extra_NV_vertex_program },
1085    { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
1086      extra_NV_vertex_program },
1087    { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
1088      extra_NV_vertex_program },
1089    { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
1090      extra_NV_vertex_program },
1091    { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
1092      extra_NV_vertex_program },
1093
1094    /* GL_NV_fragment_program */
1095    { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
1096      extra_NV_fragment_program },
1097    { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1098      extra_NV_fragment_program },
1099    { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
1100      CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
1101      extra_NV_fragment_program },
1102
1103    /* GL_NV_texture_rectangle */
1104    { GL_TEXTURE_RECTANGLE_NV,
1105      LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },
1106    { GL_TEXTURE_BINDING_RECTANGLE_NV,
1107      LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },
1108    { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,
1109      CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },
1110
1111    /* GL_EXT_stencil_two_side */
1112    { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
1113          extra_EXT_stencil_two_side },
1114    { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
1115
1116    /* GL_NV_light_max_exponent */
1117    { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
1118      extra_NV_light_max_exponent },
1119    { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
1120      extra_NV_light_max_exponent },
1121
1122    /* GL_NV_primitive_restart */
1123    { GL_PRIMITIVE_RESTART_NV, CONTEXT_BOOL(Array.PrimitiveRestart),
1124      extra_NV_primitive_restart },
1125    { GL_PRIMITIVE_RESTART_INDEX_NV, CONTEXT_INT(Array.RestartIndex),
1126      extra_NV_primitive_restart },
1127
1128    /* GL_ARB_vertex_buffer_object */
1129    { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1130      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR_INDEX].BufferObj), NO_EXTRA },
1131    { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1132      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_EDGEFLAG].BufferObj), NO_EXTRA },
1133    { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1134      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR1].BufferObj), NO_EXTRA },
1135    { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1136      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_FOG].BufferObj), NO_EXTRA },
1137
1138    /* GL_EXT_pixel_buffer_object */
1139    { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1140      extra_EXT_pixel_buffer_object },
1141    { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1142      extra_EXT_pixel_buffer_object },
1143
1144    /* GL_ARB_vertex_program */
1145    { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
1146      CONTEXT_BOOL(VertexProgram.Enabled),
1147      extra_ARB_vertex_program_NV_vertex_program },
1148    { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
1149      CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
1150      extra_ARB_vertex_program_NV_vertex_program },
1151    { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1152      CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
1153      extra_ARB_vertex_program_NV_vertex_program },
1154    { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
1155      CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
1156      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1157    { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
1158      CONTEXT_INT(Const.MaxProgramMatrices),
1159      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1160    { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
1161      LOC_CUSTOM, TYPE_INT, 0,
1162      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1163
1164    { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1165      LOC_CUSTOM, TYPE_MATRIX, 0,
1166      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1167    { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1168      LOC_CUSTOM, TYPE_MATRIX, 0,
1169      extra_ARB_vertex_program_ARB_fragment_program },
1170
1171    { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
1172      CONTEXT_INT(Program.ErrorPos),
1173      extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1174
1175    /* GL_ARB_fragment_program */
1176    { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
1177      extra_ARB_fragment_program },
1178
1179    /* GL_EXT_depth_bounds_test */
1180    { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
1181      extra_EXT_depth_bounds_test },
1182    { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
1183      extra_EXT_depth_bounds_test },
1184
1185    /* GL_ARB_depth_clamp*/
1186    { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),
1187      extra_ARB_depth_clamp },
1188
1189    /* GL_ATI_fragment_shader */
1190    { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },
1191    { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },
1192    { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },
1193    { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },
1194    { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },
1195    { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },
1196    { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },
1197    { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,
1198      CONST(3), extra_ATI_fragment_shader },
1199
1200    /* GL_EXT_framebuffer_blit
1201     * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */
1202    { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1203      extra_EXT_framebuffer_blit },
1204
1205    /* GL_EXT_provoking_vertex */
1206    { GL_PROVOKING_VERTEX_EXT,
1207      CONTEXT_ENUM(Light.ProvokingVertex), extra_EXT_provoking_vertex },
1208    { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,
1209      CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),
1210      extra_EXT_provoking_vertex },
1211
1212    /* GL_ARB_framebuffer_object */
1213    { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),
1214      extra_ARB_framebuffer_object_EXT_framebuffer_multisample },
1215
1216    /* GL_APPLE_vertex_array_object */
1217    { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),
1218      extra_APPLE_vertex_array_object },
1219
1220    /* GL_ARB_seamless_cube_map */
1221    { GL_TEXTURE_CUBE_MAP_SEAMLESS,
1222      CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },
1223
1224    /* GL_ARB_sync */
1225    { GL_MAX_SERVER_WAIT_TIMEOUT,
1226      CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },
1227
1228    /* GL_EXT_texture_integer */
1229    { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),
1230      extra_EXT_texture_integer },
1231
1232    /* GL_EXT_transform_feedback */
1233    { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1234      extra_EXT_transform_feedback },
1235    { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(RasterDiscard),
1236      extra_EXT_transform_feedback },
1237    { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
1238      CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),
1239      extra_EXT_transform_feedback },
1240    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
1241      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1242      extra_EXT_transform_feedback },
1243    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
1244      CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),
1245      extra_EXT_transform_feedback },
1246
1247    /* GL_ARB_transform_feedback2 */
1248    { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1249      extra_ARB_transform_feedback2 },
1250    { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1251      extra_ARB_transform_feedback2 },
1252    { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1253      extra_ARB_transform_feedback2 },
1254
1255    /* GL_ARB_transform_feedback3 */
1256    { GL_MAX_TRANSFORM_FEEDBACK_BUFFERS,
1257      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1258      extra_ARB_transform_feedback3 },
1259    { GL_MAX_VERTEX_STREAMS,
1260      CONTEXT_INT(Const.MaxVertexStreams),
1261      extra_ARB_transform_feedback3 },
1262
1263    /* GL_ARB_geometry_shader4 */
1264    { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB,
1265      CONTEXT_INT(Const.MaxGeometryTextureImageUnits),
1266      extra_ARB_geometry_shader4 },
1267    { GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB,
1268      CONTEXT_INT(Const.MaxGeometryOutputVertices),
1269      extra_ARB_geometry_shader4 },
1270    { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB,
1271      CONTEXT_INT(Const.MaxGeometryTotalOutputComponents),
1272      extra_ARB_geometry_shader4 },
1273    { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB,
1274      CONTEXT_INT(Const.GeometryProgram.MaxUniformComponents),
1275      extra_ARB_geometry_shader4 },
1276    { GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB,
1277      CONTEXT_INT(Const.MaxGeometryVaryingComponents),
1278      extra_ARB_geometry_shader4 },
1279    { GL_MAX_VERTEX_VARYING_COMPONENTS_ARB,
1280      CONTEXT_INT(Const.MaxVertexVaryingComponents),
1281      extra_ARB_geometry_shader4 },
1282
1283    /* GL_ARB_color_buffer_float */
1284    { GL_RGBA_FLOAT_MODE_ARB, BUFFER_FIELD(Visual.floatMode, TYPE_BOOLEAN), 0 },
1285
1286    /* GL_EXT_gpu_shader4 / GLSL 1.30 */
1287    { GL_MIN_PROGRAM_TEXEL_OFFSET,
1288      CONTEXT_INT(Const.MinProgramTexelOffset),
1289      extra_GLSL_130 },
1290    { GL_MAX_PROGRAM_TEXEL_OFFSET,
1291      CONTEXT_INT(Const.MaxProgramTexelOffset),
1292      extra_GLSL_130 },
1293
1294    /* GL_ARB_texture_buffer_object */
1295    { GL_MAX_TEXTURE_BUFFER_SIZE_ARB, CONTEXT_INT(Const.MaxTextureBufferSize),
1296      extra_texture_buffer_object },
1297    { GL_TEXTURE_BINDING_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1298      extra_texture_buffer_object },
1299    { GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1300      TEXTURE_BUFFER_INDEX, extra_texture_buffer_object },
1301    { GL_TEXTURE_BUFFER_FORMAT_ARB, LOC_CUSTOM, TYPE_INT, 0,
1302      extra_texture_buffer_object },
1303    { GL_TEXTURE_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1304      extra_texture_buffer_object },
1305
1306    /* GL_ARB_sampler_objects / GL 3.3 */
1307    { GL_SAMPLER_BINDING,
1308      LOC_CUSTOM, TYPE_INT, GL_SAMPLER_BINDING, NO_EXTRA },
1309
1310    /* GL 3.0 */
1311    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1312    { GL_MAJOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1313    { GL_MINOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30  },
1314    { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
1315
1316    /* GL3.0 / GL_EXT_framebuffer_sRGB */
1317    { GL_FRAMEBUFFER_SRGB_EXT, CONTEXT_BOOL(Color.sRGBEnabled), extra_EXT_framebuffer_sRGB },
1318    { GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, BUFFER_INT(Visual.sRGBCapable), extra_EXT_framebuffer_sRGB },
1319
1320    /* GL 3.1 */
1321    /* NOTE: different enum values for GL_PRIMITIVE_RESTART_NV
1322     * vs. GL_PRIMITIVE_RESTART!
1323     */
1324    { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),
1325      extra_version_31 },
1326    { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),
1327      extra_version_31 },
1328
1329
1330    /* GL 3.2 */
1331    { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
1332      extra_version_32 },
1333
1334    /* GL_ARB_robustness */
1335    { GL_RESET_NOTIFICATION_STRATEGY_ARB, CONTEXT_ENUM(Const.ResetStrategy), NO_EXTRA },
1336
1337    /* GL_ARB_debug_output */
1338    { GL_DEBUG_LOGGED_MESSAGES_ARB, CONTEXT_INT(Debug.NumMessages), NO_EXTRA },
1339    { GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB, CONTEXT_INT(Debug.NextMsgLength), NO_EXTRA },
1340    { GL_MAX_DEBUG_LOGGED_MESSAGES_ARB, CONST(MAX_DEBUG_LOGGED_MESSAGES), NO_EXTRA },
1341    { GL_MAX_DEBUG_MESSAGE_LENGTH_ARB, CONST(MAX_DEBUG_MESSAGE_LENGTH), NO_EXTRA },
1342
1343    { GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, CONTEXT_INT(Const.MaxDualSourceDrawBuffers), extra_ARB_blend_func_extended },
1344
1345    /* GL_ARB_uniform_buffer_object */
1346    { GL_MAX_VERTEX_UNIFORM_BLOCKS, CONTEXT_INT(Const.VertexProgram.MaxUniformBlocks),
1347      extra_ARB_uniform_buffer_object },
1348    { GL_MAX_FRAGMENT_UNIFORM_BLOCKS, CONTEXT_INT(Const.FragmentProgram.MaxUniformBlocks),
1349      extra_ARB_uniform_buffer_object },
1350    { GL_MAX_GEOMETRY_UNIFORM_BLOCKS, CONTEXT_INT(Const.GeometryProgram.MaxUniformBlocks),
1351      extra_ARB_uniform_buffer_object_and_geometry_shader },
1352    { GL_MAX_COMBINED_UNIFORM_BLOCKS, CONTEXT_INT(Const.MaxCombinedUniformBlocks),
1353      extra_ARB_uniform_buffer_object },
1354    { GL_MAX_UNIFORM_BLOCK_SIZE, CONTEXT_INT(Const.MaxUniformBlockSize),
1355      extra_ARB_uniform_buffer_object },
1356    { GL_MAX_UNIFORM_BUFFER_BINDINGS, CONTEXT_INT(Const.MaxUniformBufferBindings),
1357      extra_ARB_uniform_buffer_object },
1358
1359    { GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS, CONTEXT_INT(Const.VertexProgram.MaxCombinedUniformComponents),
1360      extra_ARB_uniform_buffer_object },
1361    { GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS, CONTEXT_INT(Const.FragmentProgram.MaxCombinedUniformComponents),
1362      extra_ARB_uniform_buffer_object },
1363    { GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS, CONTEXT_INT(Const.GeometryProgram.MaxCombinedUniformComponents),
1364      extra_ARB_uniform_buffer_object_and_geometry_shader },
1365    { GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, CONTEXT_INT(Const.UniformBufferOffsetAlignment),
1366      extra_ARB_uniform_buffer_object },
1367
1368    { GL_UNIFORM_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_uniform_buffer_object },
1369
1370    /* GL_ARB_timer_query */
1371    { GL_TIMESTAMP, LOC_CUSTOM, TYPE_INT64, 0, extra_ARB_timer_query }
1372
1373 #endif /* FEATURE_GL */
1374 };
1375
1376 /* All we need now is a way to look up the value struct from the enum.
1377  * The code generated by gcc for the old generated big switch
1378  * statement is a big, balanced, open coded if/else tree, essentially
1379  * an unrolled binary search.  It would be natural to sort the new
1380  * enum table and use bsearch(), but we will use a read-only hash
1381  * table instead.  bsearch() has a nice guaranteed worst case
1382  * performance, but we're also guaranteed to hit that worst case
1383  * (log2(n) iterations) for about half the enums.  Instead, using an
1384  * open addressing hash table, we can find the enum on the first try
1385  * for 80% of the enums, 1 collision for 10% and never more than 5
1386  * collisions for any enum (typical numbers).  And the code is very
1387  * simple, even though it feels a little magic. */
1388
1389 static unsigned short table[1024];
1390 static const int prime_factor = 89, prime_step = 281;
1391
1392 #ifdef GET_DEBUG
1393 static void
1394 print_table_stats(void)
1395 {
1396    int i, j, collisions[11], count, hash, mask;
1397    const struct value_desc *d;
1398
1399    count = 0;
1400    mask = Elements(table) - 1;
1401    memset(collisions, 0, sizeof collisions);
1402
1403    for (i = 0; i < Elements(table); i++) {
1404       if (!table[i])
1405          continue;
1406       count++;
1407       d = &values[table[i]];
1408       hash = (d->pname * prime_factor);
1409       j = 0;
1410       while (1) {
1411          if (values[table[hash & mask]].pname == d->pname)
1412             break;
1413          hash += prime_step;
1414          j++;
1415       }
1416
1417       if (j < 10)
1418          collisions[j]++;
1419       else
1420          collisions[10]++;
1421    }
1422
1423    printf("number of enums: %d (total %d)\n", count, Elements(values));
1424    for (i = 0; i < Elements(collisions) - 1; i++)
1425       if (collisions[i] > 0)
1426          printf("  %d enums with %d %scollisions\n",
1427                 collisions[i], i, i == 10 ? "or more " : "");
1428 }
1429 #endif
1430
1431 /**
1432  * Initialize the enum hash for a given API
1433  *
1434  * This is called from one_time_init() to insert the enum values that
1435  * are valid for the API in question into the enum hash table.
1436  *
1437  * \param the current context, for determining the API in question
1438  */
1439 void _mesa_init_get_hash(struct gl_context *ctx)
1440 {
1441    int i, hash, index, mask;
1442    int api_mask = 0, api_bit;
1443
1444    mask = Elements(table) - 1;
1445    api_bit = 1 << ctx->API;
1446
1447    for (i = 0; i < Elements(values); i++) {
1448       if (values[i].type == TYPE_API_MASK) {
1449          api_mask = values[i].offset;
1450          continue;
1451       }
1452       if (!(api_mask & api_bit))
1453          continue;
1454
1455       hash = (values[i].pname * prime_factor) & mask;
1456       while (1) {
1457          index = hash & mask;
1458          if (!table[index]) {
1459             table[index] = i;
1460             break;
1461          }
1462          hash += prime_step;
1463       }
1464    }
1465
1466 #ifdef GET_DEBUG
1467    print_table_stats();
1468 #endif
1469 }
1470
1471 /**
1472  * Handle irregular enums
1473  *
1474  * Some values don't conform to the "well-known type at context
1475  * pointer + offset" pattern, so we have this function to catch all
1476  * the corner cases.  Typically, it's a computed value or a one-off
1477  * pointer to a custom struct or something.
1478  *
1479  * In this case we can't return a pointer to the value, so we'll have
1480  * to use the temporary variable 'v' declared back in the calling
1481  * glGet*v() function to store the result.
1482  *
1483  * \param ctx the current context
1484  * \param d the struct value_desc that describes the enum
1485  * \param v pointer to the tmp declared in the calling glGet*v() function
1486  */
1487 static void
1488 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
1489 {
1490    struct gl_buffer_object **buffer_obj;
1491    struct gl_client_array *array;
1492    GLuint unit, *p;
1493
1494    switch (d->pname) {
1495    case GL_MAJOR_VERSION:
1496       v->value_int = ctx->Version / 10;
1497       break;
1498    case GL_MINOR_VERSION:
1499       v->value_int = ctx->Version % 10;
1500       break;
1501
1502    case GL_TEXTURE_1D:
1503    case GL_TEXTURE_2D:
1504    case GL_TEXTURE_3D:
1505    case GL_TEXTURE_1D_ARRAY_EXT:
1506    case GL_TEXTURE_2D_ARRAY_EXT:
1507    case GL_TEXTURE_CUBE_MAP_ARB:
1508    case GL_TEXTURE_RECTANGLE_NV:
1509    case GL_TEXTURE_EXTERNAL_OES:
1510       v->value_bool = _mesa_IsEnabled(d->pname);
1511       break;
1512
1513    case GL_LINE_STIPPLE_PATTERN:
1514       /* This is the only GLushort, special case it here by promoting
1515        * to an int rather than introducing a new type. */
1516       v->value_int = ctx->Line.StipplePattern;
1517       break;
1518
1519    case GL_CURRENT_RASTER_TEXTURE_COORDS:
1520       unit = ctx->Texture.CurrentUnit;
1521       v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
1522       v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
1523       v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
1524       v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
1525       break;
1526
1527    case GL_CURRENT_TEXTURE_COORDS:
1528       unit = ctx->Texture.CurrentUnit;
1529       v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
1530       v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
1531       v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
1532       v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
1533       break;
1534
1535    case GL_COLOR_WRITEMASK:
1536       v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
1537       v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
1538       v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
1539       v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
1540       break;
1541
1542    case GL_EDGE_FLAG:
1543       v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
1544       break;
1545
1546    case GL_READ_BUFFER:
1547       v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
1548       break;
1549
1550    case GL_MAP2_GRID_DOMAIN:
1551       v->value_float_4[0] = ctx->Eval.MapGrid2u1;
1552       v->value_float_4[1] = ctx->Eval.MapGrid2u2;
1553       v->value_float_4[2] = ctx->Eval.MapGrid2v1;
1554       v->value_float_4[3] = ctx->Eval.MapGrid2v2;
1555       break;
1556
1557    case GL_TEXTURE_STACK_DEPTH:
1558       unit = ctx->Texture.CurrentUnit;
1559       v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
1560       break;
1561    case GL_TEXTURE_MATRIX:
1562       unit = ctx->Texture.CurrentUnit;
1563       v->value_matrix = ctx->TextureMatrixStack[unit].Top;
1564       break;
1565
1566    case GL_TEXTURE_COORD_ARRAY:
1567    case GL_TEXTURE_COORD_ARRAY_SIZE:
1568    case GL_TEXTURE_COORD_ARRAY_TYPE:
1569    case GL_TEXTURE_COORD_ARRAY_STRIDE:
1570       array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
1571       v->value_int = *(GLuint *) ((char *) array + d->offset);
1572       break;
1573
1574    case GL_ACTIVE_TEXTURE_ARB:
1575       v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
1576       break;
1577    case GL_CLIENT_ACTIVE_TEXTURE_ARB:
1578       v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
1579       break;
1580
1581    case GL_MODELVIEW_STACK_DEPTH:
1582    case GL_PROJECTION_STACK_DEPTH:
1583       v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
1584       break;
1585
1586    case GL_MAX_TEXTURE_SIZE:
1587    case GL_MAX_3D_TEXTURE_SIZE:
1588    case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
1589       p = (GLuint *) ((char *) ctx + d->offset);
1590       v->value_int = 1 << (*p - 1);
1591       break;
1592
1593    case GL_SCISSOR_BOX:
1594       v->value_int_4[0] = ctx->Scissor.X;
1595       v->value_int_4[1] = ctx->Scissor.Y;
1596       v->value_int_4[2] = ctx->Scissor.Width;
1597       v->value_int_4[3] = ctx->Scissor.Height;
1598       break;
1599
1600    case GL_LIST_INDEX:
1601       v->value_int =
1602          ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
1603       break;
1604    case GL_LIST_MODE:
1605       if (!ctx->CompileFlag)
1606          v->value_enum = 0;
1607       else if (ctx->ExecuteFlag)
1608          v->value_enum = GL_COMPILE_AND_EXECUTE;
1609       else
1610          v->value_enum = GL_COMPILE;
1611       break;
1612
1613    case GL_VIEWPORT:
1614       v->value_int_4[0] = ctx->Viewport.X;
1615       v->value_int_4[1] = ctx->Viewport.Y;
1616       v->value_int_4[2] = ctx->Viewport.Width;
1617       v->value_int_4[3] = ctx->Viewport.Height;
1618       break;
1619
1620    case GL_ACTIVE_STENCIL_FACE_EXT:
1621       v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
1622       break;
1623
1624    case GL_STENCIL_FAIL:
1625       v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
1626       break;
1627    case GL_STENCIL_FUNC:
1628       v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
1629       break;
1630    case GL_STENCIL_PASS_DEPTH_FAIL:
1631       v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
1632       break;
1633    case GL_STENCIL_PASS_DEPTH_PASS:
1634       v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
1635       break;
1636    case GL_STENCIL_REF:
1637       v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
1638       break;
1639    case GL_STENCIL_VALUE_MASK:
1640       v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
1641       break;
1642    case GL_STENCIL_WRITEMASK:
1643       v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
1644       break;
1645
1646    case GL_NUM_EXTENSIONS:
1647       v->value_int = _mesa_get_extension_count(ctx);
1648       break;
1649
1650    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
1651       v->value_int = _mesa_get_color_read_type(ctx);
1652       break;
1653    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
1654       v->value_int = _mesa_get_color_read_format(ctx);
1655       break;
1656
1657    case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
1658       v->value_int = ctx->CurrentStack->Depth + 1;
1659       break;
1660    case GL_CURRENT_MATRIX_ARB:
1661    case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
1662       v->value_matrix = ctx->CurrentStack->Top;
1663       break;
1664
1665    case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
1666       v->value_int = _mesa_get_compressed_formats(ctx, NULL);
1667       break;
1668    case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
1669       v->value_int_n.n =
1670          _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
1671       ASSERT(v->value_int_n.n <= 100);
1672       break;
1673
1674    case GL_MAX_VARYING_FLOATS_ARB:
1675       v->value_int = ctx->Const.MaxVarying * 4;
1676       break;
1677
1678    /* Various object names */
1679
1680    case GL_TEXTURE_BINDING_1D:
1681    case GL_TEXTURE_BINDING_2D:
1682    case GL_TEXTURE_BINDING_3D:
1683    case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
1684    case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
1685    case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
1686    case GL_TEXTURE_BINDING_RECTANGLE_NV:
1687    case GL_TEXTURE_BINDING_EXTERNAL_OES:
1688       unit = ctx->Texture.CurrentUnit;
1689       v->value_int =
1690          ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
1691       break;
1692
1693    /* GL_ARB_vertex_buffer_object */
1694    case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
1695    case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
1696    case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
1697    case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
1698    case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
1699    case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
1700    case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
1701       buffer_obj = (struct gl_buffer_object **)
1702          ((char *) ctx->Array.ArrayObj + d->offset);
1703       v->value_int = (*buffer_obj)->Name;
1704       break;
1705    case GL_ARRAY_BUFFER_BINDING_ARB:
1706       v->value_int = ctx->Array.ArrayBufferObj->Name;
1707       break;
1708    case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
1709       v->value_int =
1710          ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
1711       break;
1712    case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
1713       v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
1714       break;
1715
1716    /* ARB_copy_buffer */
1717    case GL_COPY_READ_BUFFER:
1718       v->value_int = ctx->CopyReadBuffer->Name;
1719       break;
1720    case GL_COPY_WRITE_BUFFER:
1721       v->value_int = ctx->CopyWriteBuffer->Name;
1722       break;
1723
1724    case GL_FRAGMENT_PROGRAM_BINDING_NV:
1725       v->value_int =
1726          ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
1727       break;
1728    case GL_VERTEX_PROGRAM_BINDING_NV:
1729       v->value_int =
1730          ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
1731       break;
1732    case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
1733       v->value_int = ctx->Pack.BufferObj->Name;
1734       break;
1735    case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
1736       v->value_int = ctx->Unpack.BufferObj->Name;
1737       break;
1738    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1739       v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
1740       break;
1741    case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
1742       v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
1743       break;
1744    case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
1745       v->value_int = ctx->TransformFeedback.CurrentObject->Active;
1746       break;
1747    case GL_TRANSFORM_FEEDBACK_BINDING:
1748       v->value_int = ctx->TransformFeedback.CurrentObject->Name;
1749       break;
1750    case GL_CURRENT_PROGRAM:
1751       v->value_int =
1752          ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
1753       break;
1754    case GL_READ_FRAMEBUFFER_BINDING_EXT:
1755       v->value_int = ctx->ReadBuffer->Name;
1756       break;
1757    case GL_RENDERBUFFER_BINDING_EXT:
1758       v->value_int =
1759          ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
1760       break;
1761    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
1762       v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
1763       break;
1764
1765    case GL_FOG_COLOR:
1766       if(ctx->Color._ClampFragmentColor)
1767          COPY_4FV(v->value_float_4, ctx->Fog.Color);
1768       else
1769          COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
1770       break;
1771    case GL_COLOR_CLEAR_VALUE:
1772       if(ctx->Color._ClampFragmentColor) {
1773          v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
1774          v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
1775          v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
1776          v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
1777       } else
1778          COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
1779       break;
1780    case GL_BLEND_COLOR_EXT:
1781       if(ctx->Color._ClampFragmentColor)
1782          COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
1783       else
1784          COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
1785       break;
1786    case GL_ALPHA_TEST_REF:
1787       if(ctx->Color._ClampFragmentColor)
1788          v->value_float = ctx->Color.AlphaRef;
1789       else
1790          v->value_float = ctx->Color.AlphaRefUnclamped;
1791       break;
1792    case GL_MAX_VERTEX_UNIFORM_VECTORS:
1793       v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
1794       break;
1795
1796    case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
1797       v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
1798       break;
1799
1800    /* GL_ARB_texture_buffer_object */
1801    case GL_TEXTURE_BUFFER_ARB:
1802       v->value_int = ctx->Texture.BufferObject->Name;
1803       break;
1804    case GL_TEXTURE_BINDING_BUFFER_ARB:
1805       unit = ctx->Texture.CurrentUnit;
1806       v->value_int =
1807          ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
1808       break;
1809    case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
1810       {
1811          struct gl_buffer_object *buf =
1812             ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1813             .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
1814          v->value_int = buf ? buf->Name : 0;
1815       }
1816       break;
1817    case GL_TEXTURE_BUFFER_FORMAT_ARB:
1818       v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1819          .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
1820       break;
1821
1822    /* GL_ARB_sampler_objects */
1823    case GL_SAMPLER_BINDING:
1824       {
1825          struct gl_sampler_object *samp =
1826             ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
1827          v->value_int = samp ? samp->Name : 0;
1828       }
1829       break;
1830    /* GL_ARB_uniform_buffer_object */
1831    case GL_UNIFORM_BUFFER_BINDING:
1832       v->value_int = ctx->UniformBuffer->Name;
1833       break;
1834    /* GL_ARB_timer_query */
1835    case GL_TIMESTAMP:
1836       if (ctx->Driver.GetTimestamp) {
1837          v->value_int64 = ctx->Driver.GetTimestamp(ctx);
1838       }
1839       else {
1840          _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
1841       }
1842       break;
1843    }
1844 }
1845
1846 /**
1847  * Check extra constraints on a struct value_desc descriptor
1848  *
1849  * If a struct value_desc has a non-NULL extra pointer, it means that
1850  * there are a number of extra constraints to check or actions to
1851  * perform.  The extras is just an integer array where each integer
1852  * encode different constraints or actions.
1853  *
1854  * \param ctx current context
1855  * \param func name of calling glGet*v() function for error reporting
1856  * \param d the struct value_desc that has the extra constraints
1857  *
1858  * \return GL_FALSE if one of the constraints was not satisfied,
1859  *     otherwise GL_TRUE.
1860  */
1861 static GLboolean
1862 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1863 {
1864    const GLuint version = ctx->Version;
1865    int total, enabled;
1866    const int *e;
1867
1868    total = 0;
1869    enabled = 0;
1870    for (e = d->extra; *e != EXTRA_END; e++)
1871       switch (*e) {
1872       case EXTRA_VERSION_30:
1873          if (version >= 30) {
1874             total++;
1875             enabled++;
1876          }
1877          break;
1878       case EXTRA_VERSION_31:
1879          if (version >= 31) {
1880             total++;
1881             enabled++;
1882          }
1883          break;
1884       case EXTRA_VERSION_32:
1885          if (version >= 32) {
1886             total++;
1887             enabled++;
1888          }
1889          break;
1890       case EXTRA_NEW_FRAG_CLAMP:
1891          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1892             _mesa_update_state(ctx);
1893          break;
1894       case EXTRA_API_ES2:
1895          if (ctx->API == API_OPENGLES2) {
1896             total++;
1897             enabled++;
1898          }
1899          break;
1900       case EXTRA_API_GL:
1901          if (_mesa_is_desktop_gl(ctx)) {
1902             total++;
1903             enabled++;
1904          }
1905          break;
1906       case EXTRA_NEW_BUFFERS:
1907          if (ctx->NewState & _NEW_BUFFERS)
1908             _mesa_update_state(ctx);
1909          break;
1910       case EXTRA_FLUSH_CURRENT:
1911          FLUSH_CURRENT(ctx, 0);
1912          break;
1913       case EXTRA_VALID_DRAW_BUFFER:
1914          if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1915             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1916                         func, d->pname - GL_DRAW_BUFFER0_ARB);
1917             return GL_FALSE;
1918          }
1919          break;
1920       case EXTRA_VALID_TEXTURE_UNIT:
1921          if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1922             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1923                         func, ctx->Texture.CurrentUnit);
1924             return GL_FALSE;
1925          }
1926          break;
1927       case EXTRA_VALID_CLIP_DISTANCE:
1928          if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1929             _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1930                         func, d->pname - GL_CLIP_DISTANCE0);
1931             return GL_FALSE;
1932          }
1933          break;
1934       case EXTRA_GLSL_130:
1935          if (ctx->Const.GLSLVersion >= 130) {
1936             total++;
1937             enabled++;
1938          }
1939          break;
1940       case EXTRA_END:
1941          break;
1942       default: /* *e is a offset into the extension struct */
1943          total++;
1944          if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1945             enabled++;
1946          break;
1947       }
1948
1949    if (total > 0 && enabled == 0) {
1950       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1951                   _mesa_lookup_enum_by_nr(d->pname));
1952       return GL_FALSE;
1953    }
1954
1955    return GL_TRUE;
1956 }
1957
1958 static const struct value_desc error_value =
1959    { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1960
1961 /**
1962  * Find the struct value_desc corresponding to the enum 'pname'.
1963  *
1964  * We hash the enum value to get an index into the 'table' array,
1965  * which holds the index in the 'values' array of struct value_desc.
1966  * Once we've found the entry, we do the extra checks, if any, then
1967  * look up the value and return a pointer to it.
1968  *
1969  * If the value has to be computed (for example, it's the result of a
1970  * function call or we need to add 1 to it), we use the tmp 'v' to
1971  * store the result.
1972  *
1973  * \param func name of glGet*v() func for error reporting
1974  * \param pname the enum value we're looking up
1975  * \param p is were we return the pointer to the value
1976  * \param v a tmp union value variable in the calling glGet*v() function
1977  *
1978  * \return the struct value_desc corresponding to the enum or a struct
1979  *     value_desc of TYPE_INVALID if not found.  This lets the calling
1980  *     glGet*v() function jump right into a switch statement and
1981  *     handle errors there instead of having to check for NULL.
1982  */
1983 static const struct value_desc *
1984 find_value(const char *func, GLenum pname, void **p, union value *v)
1985 {
1986    GET_CURRENT_CONTEXT(ctx);
1987    struct gl_texture_unit *unit;
1988    int mask, hash;
1989    const struct value_desc *d;
1990
1991    mask = Elements(table) - 1;
1992    hash = (pname * prime_factor);
1993    while (1) {
1994       d = &values[table[hash & mask]];
1995
1996       /* If the enum isn't valid, the hash walk ends with index 0,
1997        * which is the API mask entry at the beginning of values[]. */
1998       if (unlikely(d->type == TYPE_API_MASK)) {
1999          _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
2000                      _mesa_lookup_enum_by_nr(pname));
2001          return &error_value;
2002       }
2003
2004       if (likely(d->pname == pname))
2005          break;
2006
2007       hash += prime_step;
2008    }
2009
2010    if (unlikely(d->extra && !check_extra(ctx, func, d)))
2011       return &error_value;
2012
2013    switch (d->location) {
2014    case LOC_BUFFER:
2015       *p = ((char *) ctx->DrawBuffer + d->offset);
2016       return d;
2017    case LOC_CONTEXT:
2018       *p = ((char *) ctx + d->offset);
2019       return d;
2020    case LOC_ARRAY:
2021       *p = ((char *) ctx->Array.ArrayObj + d->offset);
2022       return d;
2023    case LOC_TEXUNIT:
2024       unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
2025       *p = ((char *) unit + d->offset);
2026       return d;
2027    case LOC_CUSTOM:
2028       find_custom_value(ctx, d, v);
2029       *p = v;
2030       return d;
2031    default:
2032       assert(0);
2033       break;
2034    }
2035
2036    /* silence warning */
2037    return &error_value;
2038 }
2039
2040 static const int transpose[] = {
2041    0, 4,  8, 12,
2042    1, 5,  9, 13,
2043    2, 6, 10, 14,
2044    3, 7, 11, 15
2045 };
2046
2047 void GLAPIENTRY
2048 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
2049 {
2050    const struct value_desc *d;
2051    union value v;
2052    GLmatrix *m;
2053    int shift, i;
2054    void *p;
2055    GET_CURRENT_CONTEXT(ctx);
2056
2057    ASSERT_OUTSIDE_BEGIN_END(ctx);
2058
2059    d = find_value("glGetBooleanv", pname, &p, &v);
2060    switch (d->type) {
2061    case TYPE_INVALID:
2062       break;
2063    case TYPE_CONST:
2064       params[0] = INT_TO_BOOLEAN(d->offset);
2065       break;
2066
2067    case TYPE_FLOAT_4:
2068    case TYPE_FLOATN_4:
2069       params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
2070    case TYPE_FLOAT_3:
2071    case TYPE_FLOATN_3:
2072       params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
2073    case TYPE_FLOAT_2:
2074    case TYPE_FLOATN_2:
2075       params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
2076    case TYPE_FLOAT:
2077    case TYPE_FLOATN:
2078       params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
2079       break;
2080
2081    case TYPE_DOUBLEN:
2082       params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
2083       break;
2084
2085    case TYPE_INT_4:
2086       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
2087    case TYPE_INT_3:
2088       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
2089    case TYPE_INT_2:
2090    case TYPE_ENUM_2:
2091       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
2092    case TYPE_INT:
2093    case TYPE_ENUM:
2094       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
2095       break;
2096
2097    case TYPE_INT_N:
2098       for (i = 0; i < v.value_int_n.n; i++)
2099          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2100       break;
2101
2102    case TYPE_INT64:
2103       params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
2104       break;
2105
2106    case TYPE_BOOLEAN:
2107       params[0] = ((GLboolean*) p)[0];
2108       break;
2109
2110    case TYPE_MATRIX:
2111       m = *(GLmatrix **) p;
2112       for (i = 0; i < 16; i++)
2113          params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
2114       break;
2115
2116    case TYPE_MATRIX_T:
2117       m = *(GLmatrix **) p;
2118       for (i = 0; i < 16; i++)
2119          params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
2120       break;
2121
2122    case TYPE_BIT_0:
2123    case TYPE_BIT_1:
2124    case TYPE_BIT_2:
2125    case TYPE_BIT_3:
2126    case TYPE_BIT_4:
2127    case TYPE_BIT_5:
2128    case TYPE_BIT_6:
2129    case TYPE_BIT_7:
2130       shift = d->type - TYPE_BIT_0;
2131       params[0] = (*(GLbitfield *) p >> shift) & 1;
2132       break;
2133    }
2134 }
2135
2136 void GLAPIENTRY
2137 _mesa_GetFloatv(GLenum pname, GLfloat *params)
2138 {
2139    const struct value_desc *d;
2140    union value v;
2141    GLmatrix *m;
2142    int shift, i;
2143    void *p;
2144    GET_CURRENT_CONTEXT(ctx);
2145
2146    ASSERT_OUTSIDE_BEGIN_END(ctx);
2147
2148    d = find_value("glGetFloatv", pname, &p, &v);
2149    switch (d->type) {
2150    case TYPE_INVALID:
2151       break;
2152    case TYPE_CONST:
2153       params[0] = (GLfloat) d->offset;
2154       break;
2155
2156    case TYPE_FLOAT_4:
2157    case TYPE_FLOATN_4:
2158       params[3] = ((GLfloat *) p)[3];
2159    case TYPE_FLOAT_3:
2160    case TYPE_FLOATN_3:
2161       params[2] = ((GLfloat *) p)[2];
2162    case TYPE_FLOAT_2:
2163    case TYPE_FLOATN_2:
2164       params[1] = ((GLfloat *) p)[1];
2165    case TYPE_FLOAT:
2166    case TYPE_FLOATN:
2167       params[0] = ((GLfloat *) p)[0];
2168       break;
2169
2170    case TYPE_DOUBLEN:
2171       params[0] = ((GLdouble *) p)[0];
2172       break;
2173
2174    case TYPE_INT_4:
2175       params[3] = (GLfloat) (((GLint *) p)[3]);
2176    case TYPE_INT_3:
2177       params[2] = (GLfloat) (((GLint *) p)[2]);
2178    case TYPE_INT_2:
2179    case TYPE_ENUM_2:
2180       params[1] = (GLfloat) (((GLint *) p)[1]);
2181    case TYPE_INT:
2182    case TYPE_ENUM:
2183       params[0] = (GLfloat) (((GLint *) p)[0]);
2184       break;
2185
2186    case TYPE_INT_N:
2187       for (i = 0; i < v.value_int_n.n; i++)
2188          params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
2189       break;
2190
2191    case TYPE_INT64:
2192       params[0] = ((GLint64 *) p)[0];
2193       break;
2194
2195    case TYPE_BOOLEAN:
2196       params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
2197       break;
2198
2199    case TYPE_MATRIX:
2200       m = *(GLmatrix **) p;
2201       for (i = 0; i < 16; i++)
2202          params[i] = m->m[i];
2203       break;
2204
2205    case TYPE_MATRIX_T:
2206       m = *(GLmatrix **) p;
2207       for (i = 0; i < 16; i++)
2208          params[i] = m->m[transpose[i]];
2209       break;
2210
2211    case TYPE_BIT_0:
2212    case TYPE_BIT_1:
2213    case TYPE_BIT_2:
2214    case TYPE_BIT_3:
2215    case TYPE_BIT_4:
2216    case TYPE_BIT_5:
2217    case TYPE_BIT_6:
2218    case TYPE_BIT_7:
2219       shift = d->type - TYPE_BIT_0;
2220       params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
2221       break;
2222    }
2223 }
2224
2225 void GLAPIENTRY
2226 _mesa_GetIntegerv(GLenum pname, GLint *params)
2227 {
2228    const struct value_desc *d;
2229    union value v;
2230    GLmatrix *m;
2231    int shift, i;
2232    void *p;
2233    GET_CURRENT_CONTEXT(ctx);
2234
2235    ASSERT_OUTSIDE_BEGIN_END(ctx);
2236
2237    d = find_value("glGetIntegerv", pname, &p, &v);
2238    switch (d->type) {
2239    case TYPE_INVALID:
2240       break;
2241    case TYPE_CONST:
2242       params[0] = d->offset;
2243       break;
2244
2245    case TYPE_FLOAT_4:
2246       params[3] = IROUND(((GLfloat *) p)[3]);
2247    case TYPE_FLOAT_3:
2248       params[2] = IROUND(((GLfloat *) p)[2]);
2249    case TYPE_FLOAT_2:
2250       params[1] = IROUND(((GLfloat *) p)[1]);
2251    case TYPE_FLOAT:
2252       params[0] = IROUND(((GLfloat *) p)[0]);
2253       break;
2254
2255    case TYPE_FLOATN_4:
2256       params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
2257    case TYPE_FLOATN_3:
2258       params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
2259    case TYPE_FLOATN_2:
2260       params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
2261    case TYPE_FLOATN:
2262       params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
2263       break;
2264
2265    case TYPE_DOUBLEN:
2266       params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
2267       break;
2268
2269    case TYPE_INT_4:
2270       params[3] = ((GLint *) p)[3];
2271    case TYPE_INT_3:
2272       params[2] = ((GLint *) p)[2];
2273    case TYPE_INT_2:
2274    case TYPE_ENUM_2:
2275       params[1] = ((GLint *) p)[1];
2276    case TYPE_INT:
2277    case TYPE_ENUM:
2278       params[0] = ((GLint *) p)[0];
2279       break;
2280
2281    case TYPE_INT_N:
2282       for (i = 0; i < v.value_int_n.n; i++)
2283          params[i] = v.value_int_n.ints[i];
2284       break;
2285
2286    case TYPE_INT64:
2287       params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
2288       break;
2289
2290    case TYPE_BOOLEAN:
2291       params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
2292       break;
2293
2294    case TYPE_MATRIX:
2295       m = *(GLmatrix **) p;
2296       for (i = 0; i < 16; i++)
2297          params[i] = FLOAT_TO_INT(m->m[i]);
2298       break;
2299
2300    case TYPE_MATRIX_T:
2301       m = *(GLmatrix **) p;
2302       for (i = 0; i < 16; i++)
2303          params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
2304       break;
2305
2306    case TYPE_BIT_0:
2307    case TYPE_BIT_1:
2308    case TYPE_BIT_2:
2309    case TYPE_BIT_3:
2310    case TYPE_BIT_4:
2311    case TYPE_BIT_5:
2312    case TYPE_BIT_6:
2313    case TYPE_BIT_7:
2314       shift = d->type - TYPE_BIT_0;
2315       params[0] = (*(GLbitfield *) p >> shift) & 1;
2316       break;
2317    }
2318 }
2319
2320 #if FEATURE_ARB_sync
2321 void GLAPIENTRY
2322 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
2323 {
2324    const struct value_desc *d;
2325    union value v;
2326    GLmatrix *m;
2327    int shift, i;
2328    void *p;
2329    GET_CURRENT_CONTEXT(ctx);
2330
2331    ASSERT_OUTSIDE_BEGIN_END(ctx);
2332
2333    d = find_value("glGetInteger64v", pname, &p, &v);
2334    switch (d->type) {
2335    case TYPE_INVALID:
2336       break;
2337    case TYPE_CONST:
2338       params[0] = d->offset;
2339       break;
2340
2341    case TYPE_FLOAT_4:
2342       params[3] = IROUND64(((GLfloat *) p)[3]);
2343    case TYPE_FLOAT_3:
2344       params[2] = IROUND64(((GLfloat *) p)[2]);
2345    case TYPE_FLOAT_2:
2346       params[1] = IROUND64(((GLfloat *) p)[1]);
2347    case TYPE_FLOAT:
2348       params[0] = IROUND64(((GLfloat *) p)[0]);
2349       break;
2350
2351    case TYPE_FLOATN_4:
2352       params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
2353    case TYPE_FLOATN_3:
2354       params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
2355    case TYPE_FLOATN_2:
2356       params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
2357    case TYPE_FLOATN:
2358       params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
2359       break;
2360
2361    case TYPE_DOUBLEN:
2362       params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
2363       break;
2364
2365    case TYPE_INT_4:
2366       params[3] = ((GLint *) p)[3];
2367    case TYPE_INT_3:
2368       params[2] = ((GLint *) p)[2];
2369    case TYPE_INT_2:
2370    case TYPE_ENUM_2:
2371       params[1] = ((GLint *) p)[1];
2372    case TYPE_INT:
2373    case TYPE_ENUM:
2374       params[0] = ((GLint *) p)[0];
2375       break;
2376
2377    case TYPE_INT_N:
2378       for (i = 0; i < v.value_int_n.n; i++)
2379          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2380       break;
2381
2382    case TYPE_INT64:
2383       params[0] = ((GLint64 *) p)[0];
2384       break;
2385
2386    case TYPE_BOOLEAN:
2387       params[0] = ((GLboolean*) p)[0];
2388       break;
2389
2390    case TYPE_MATRIX:
2391       m = *(GLmatrix **) p;
2392       for (i = 0; i < 16; i++)
2393          params[i] = FLOAT_TO_INT64(m->m[i]);
2394       break;
2395
2396    case TYPE_MATRIX_T:
2397       m = *(GLmatrix **) p;
2398       for (i = 0; i < 16; i++)
2399          params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
2400       break;
2401
2402    case TYPE_BIT_0:
2403    case TYPE_BIT_1:
2404    case TYPE_BIT_2:
2405    case TYPE_BIT_3:
2406    case TYPE_BIT_4:
2407    case TYPE_BIT_5:
2408    case TYPE_BIT_6:
2409    case TYPE_BIT_7:
2410       shift = d->type - TYPE_BIT_0;
2411       params[0] = (*(GLbitfield *) p >> shift) & 1;
2412       break;
2413    }
2414 }
2415 #endif /* FEATURE_ARB_sync */
2416
2417 void GLAPIENTRY
2418 _mesa_GetDoublev(GLenum pname, GLdouble *params)
2419 {
2420    const struct value_desc *d;
2421    union value v;
2422    GLmatrix *m;
2423    int shift, i;
2424    void *p;
2425    GET_CURRENT_CONTEXT(ctx);
2426
2427    ASSERT_OUTSIDE_BEGIN_END(ctx);
2428
2429    d = find_value("glGetDoublev", pname, &p, &v);
2430    switch (d->type) {
2431    case TYPE_INVALID:
2432       break;
2433    case TYPE_CONST:
2434       params[0] = d->offset;
2435       break;
2436
2437    case TYPE_FLOAT_4:
2438    case TYPE_FLOATN_4:
2439       params[3] = ((GLfloat *) p)[3];
2440    case TYPE_FLOAT_3:
2441    case TYPE_FLOATN_3:
2442       params[2] = ((GLfloat *) p)[2];
2443    case TYPE_FLOAT_2:
2444    case TYPE_FLOATN_2:
2445       params[1] = ((GLfloat *) p)[1];
2446    case TYPE_FLOAT:
2447    case TYPE_FLOATN:
2448       params[0] = ((GLfloat *) p)[0];
2449       break;
2450
2451    case TYPE_DOUBLEN:
2452       params[0] = ((GLdouble *) p)[0];
2453       break;
2454
2455    case TYPE_INT_4:
2456       params[3] = ((GLint *) p)[3];
2457    case TYPE_INT_3:
2458       params[2] = ((GLint *) p)[2];
2459    case TYPE_INT_2:
2460    case TYPE_ENUM_2:
2461       params[1] = ((GLint *) p)[1];
2462    case TYPE_INT:
2463    case TYPE_ENUM:
2464       params[0] = ((GLint *) p)[0];
2465       break;
2466
2467    case TYPE_INT_N:
2468       for (i = 0; i < v.value_int_n.n; i++)
2469          params[i] = v.value_int_n.ints[i];
2470       break;
2471
2472    case TYPE_INT64:
2473       params[0] = ((GLint64 *) p)[0];
2474       break;
2475
2476    case TYPE_BOOLEAN:
2477       params[0] = *(GLboolean*) p;
2478       break;
2479
2480    case TYPE_MATRIX:
2481       m = *(GLmatrix **) p;
2482       for (i = 0; i < 16; i++)
2483          params[i] = m->m[i];
2484       break;
2485
2486    case TYPE_MATRIX_T:
2487       m = *(GLmatrix **) p;
2488       for (i = 0; i < 16; i++)
2489          params[i] = m->m[transpose[i]];
2490       break;
2491
2492    case TYPE_BIT_0:
2493    case TYPE_BIT_1:
2494    case TYPE_BIT_2:
2495    case TYPE_BIT_3:
2496    case TYPE_BIT_4:
2497    case TYPE_BIT_5:
2498    case TYPE_BIT_6:
2499    case TYPE_BIT_7:
2500       shift = d->type - TYPE_BIT_0;
2501       params[0] = (*(GLbitfield *) p >> shift) & 1;
2502       break;
2503    }
2504 }
2505
2506 static enum value_type
2507 find_value_indexed(const char *func, GLenum pname, int index, union value *v)
2508 {
2509    GET_CURRENT_CONTEXT(ctx);
2510
2511    switch (pname) {
2512
2513    case GL_BLEND:
2514       if (index >= ctx->Const.MaxDrawBuffers)
2515          goto invalid_value;
2516       if (!ctx->Extensions.EXT_draw_buffers2)
2517          goto invalid_enum;
2518       v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
2519       return TYPE_INT;
2520
2521    case GL_BLEND_SRC:
2522       /* fall-through */
2523    case GL_BLEND_SRC_RGB:
2524       if (index >= ctx->Const.MaxDrawBuffers)
2525          goto invalid_value;
2526       if (!ctx->Extensions.ARB_draw_buffers_blend)
2527          goto invalid_enum;
2528       v->value_int = ctx->Color.Blend[index].SrcRGB;
2529       return TYPE_INT;
2530    case GL_BLEND_SRC_ALPHA:
2531       if (index >= ctx->Const.MaxDrawBuffers)
2532          goto invalid_value;
2533       if (!ctx->Extensions.ARB_draw_buffers_blend)
2534          goto invalid_enum;
2535       v->value_int = ctx->Color.Blend[index].SrcA;
2536       return TYPE_INT;
2537    case GL_BLEND_DST:
2538       /* fall-through */
2539    case GL_BLEND_DST_RGB:
2540       if (index >= ctx->Const.MaxDrawBuffers)
2541          goto invalid_value;
2542       if (!ctx->Extensions.ARB_draw_buffers_blend)
2543          goto invalid_enum;
2544       v->value_int = ctx->Color.Blend[index].DstRGB;
2545       return TYPE_INT;
2546    case GL_BLEND_DST_ALPHA:
2547       if (index >= ctx->Const.MaxDrawBuffers)
2548          goto invalid_value;
2549       if (!ctx->Extensions.ARB_draw_buffers_blend)
2550          goto invalid_enum;
2551       v->value_int = ctx->Color.Blend[index].DstA;
2552       return TYPE_INT;
2553    case GL_BLEND_EQUATION_RGB:
2554       if (index >= ctx->Const.MaxDrawBuffers)
2555          goto invalid_value;
2556       if (!ctx->Extensions.ARB_draw_buffers_blend)
2557          goto invalid_enum;
2558       v->value_int = ctx->Color.Blend[index].EquationRGB;
2559       return TYPE_INT;
2560    case GL_BLEND_EQUATION_ALPHA:
2561       if (index >= ctx->Const.MaxDrawBuffers)
2562          goto invalid_value;
2563       if (!ctx->Extensions.ARB_draw_buffers_blend)
2564          goto invalid_enum;
2565       v->value_int = ctx->Color.Blend[index].EquationA;
2566       return TYPE_INT;
2567
2568    case GL_COLOR_WRITEMASK:
2569       if (index >= ctx->Const.MaxDrawBuffers)
2570          goto invalid_value;
2571       if (!ctx->Extensions.EXT_draw_buffers2)
2572          goto invalid_enum;
2573       v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
2574       v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
2575       v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
2576       v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
2577       return TYPE_INT_4;
2578
2579    case GL_TRANSFORM_FEEDBACK_BUFFER_START:
2580       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2581          goto invalid_value;
2582       if (!ctx->Extensions.EXT_transform_feedback)
2583          goto invalid_enum;
2584       v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
2585       return TYPE_INT64;
2586
2587    case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
2588       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2589          goto invalid_value;
2590       if (!ctx->Extensions.EXT_transform_feedback)
2591          goto invalid_enum;
2592       v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];
2593       return TYPE_INT64;
2594
2595    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
2596       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2597          goto invalid_value;
2598       if (!ctx->Extensions.EXT_transform_feedback)
2599          goto invalid_enum;
2600       v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
2601       return TYPE_INT;
2602
2603    case GL_UNIFORM_BUFFER_BINDING:
2604       if (index >= ctx->Const.MaxUniformBufferBindings)
2605          goto invalid_value;
2606       if (!ctx->Extensions.ARB_uniform_buffer_object)
2607          goto invalid_enum;
2608       v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
2609       return TYPE_INT;
2610
2611    case GL_UNIFORM_BUFFER_START:
2612       if (index >= ctx->Const.MaxUniformBufferBindings)
2613          goto invalid_value;
2614       if (!ctx->Extensions.ARB_uniform_buffer_object)
2615          goto invalid_enum;
2616       v->value_int = ctx->UniformBufferBindings[index].Offset;
2617       return TYPE_INT;
2618
2619    case GL_UNIFORM_BUFFER_SIZE:
2620       if (index >= ctx->Const.MaxUniformBufferBindings)
2621          goto invalid_value;
2622       if (!ctx->Extensions.ARB_uniform_buffer_object)
2623          goto invalid_enum;
2624       v->value_int = ctx->UniformBufferBindings[index].Size;
2625       return TYPE_INT;
2626    }
2627
2628  invalid_enum:
2629    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
2630                _mesa_lookup_enum_by_nr(pname));
2631    return TYPE_INVALID;
2632  invalid_value:
2633    _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
2634                _mesa_lookup_enum_by_nr(pname));
2635    return TYPE_INVALID;
2636 }
2637
2638 void GLAPIENTRY
2639 _mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
2640 {
2641    union value v;
2642    enum value_type type =
2643       find_value_indexed("glGetBooleanIndexedv", pname, index, &v);
2644
2645    switch (type) {
2646    case TYPE_INT:
2647       params[0] = INT_TO_BOOLEAN(v.value_int);
2648       break;
2649    case TYPE_INT_4:
2650       params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2651       params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2652       params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2653       params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2654       break;
2655    case TYPE_INT64:
2656       params[0] = INT64_TO_BOOLEAN(v.value_int);
2657       break;
2658    default:
2659       ; /* nothing - GL error was recorded */
2660    }
2661 }
2662
2663 void GLAPIENTRY
2664 _mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
2665 {
2666    union value v;
2667    enum value_type type =
2668       find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
2669
2670    switch (type) {
2671    case TYPE_INT:
2672       params[0] = v.value_int;
2673       break;
2674    case TYPE_INT_4:
2675       params[0] = v.value_int_4[0];
2676       params[1] = v.value_int_4[1];
2677       params[2] = v.value_int_4[2];
2678       params[3] = v.value_int_4[3];
2679       break;
2680    case TYPE_INT64:
2681       params[0] = INT64_TO_INT(v.value_int);
2682       break;
2683    default:
2684       ; /* nothing - GL error was recorded */
2685    }
2686 }
2687
2688 #if FEATURE_ARB_sync
2689 void GLAPIENTRY
2690 _mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )
2691 {
2692    union value v;
2693    enum value_type type =
2694       find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
2695
2696    switch (type) {
2697    case TYPE_INT:
2698       params[0] = v.value_int;
2699       break;
2700    case TYPE_INT_4:
2701       params[0] = v.value_int_4[0];
2702       params[1] = v.value_int_4[1];
2703       params[2] = v.value_int_4[2];
2704       params[3] = v.value_int_4[3];
2705       break;
2706    case TYPE_INT64:
2707       params[0] = v.value_int;
2708       break;
2709    default:
2710       ; /* nothing - GL error was recorded */
2711    }
2712 }
2713 #endif /* FEATURE_ARB_sync */
2714
2715 #if FEATURE_ES1
2716 void GLAPIENTRY
2717 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2718 {
2719    const struct value_desc *d;
2720    union value v;
2721    GLmatrix *m;
2722    int shift, i;
2723    void *p;
2724
2725    d = find_value("glGetDoublev", pname, &p, &v);
2726    switch (d->type) {
2727    case TYPE_INVALID:
2728       break;
2729    case TYPE_CONST:
2730       params[0] = INT_TO_FIXED(d->offset);
2731       break;
2732
2733    case TYPE_FLOAT_4:
2734    case TYPE_FLOATN_4:
2735       params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2736    case TYPE_FLOAT_3:
2737    case TYPE_FLOATN_3:
2738       params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2739    case TYPE_FLOAT_2:
2740    case TYPE_FLOATN_2:
2741       params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2742    case TYPE_FLOAT:
2743    case TYPE_FLOATN:
2744       params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2745       break;
2746
2747    case TYPE_DOUBLEN:
2748       params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2749       break;
2750
2751    case TYPE_INT_4:
2752       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2753    case TYPE_INT_3:
2754       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2755    case TYPE_INT_2:
2756    case TYPE_ENUM_2:
2757       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2758    case TYPE_INT:
2759    case TYPE_ENUM:
2760       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2761       break;
2762
2763    case TYPE_INT_N:
2764       for (i = 0; i < v.value_int_n.n; i++)
2765          params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2766       break;
2767
2768    case TYPE_INT64:
2769       params[0] = ((GLint64 *) p)[0];
2770       break;
2771
2772    case TYPE_BOOLEAN:
2773       params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2774       break;
2775
2776    case TYPE_MATRIX:
2777       m = *(GLmatrix **) p;
2778       for (i = 0; i < 16; i++)
2779          params[i] = FLOAT_TO_FIXED(m->m[i]);
2780       break;
2781
2782    case TYPE_MATRIX_T:
2783       m = *(GLmatrix **) p;
2784       for (i = 0; i < 16; i++)
2785          params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2786       break;
2787
2788    case TYPE_BIT_0:
2789    case TYPE_BIT_1:
2790    case TYPE_BIT_2:
2791    case TYPE_BIT_3:
2792    case TYPE_BIT_4:
2793    case TYPE_BIT_5:
2794    case TYPE_BIT_6:
2795    case TYPE_BIT_7:
2796       shift = d->type - TYPE_BIT_0;
2797       params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2798       break;
2799    }
2800 }
2801 #endif