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