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