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