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_ES1 || FEATURE_ES2
 793    { 0, 0, TYPE_API_MASK, API_OPENGLES | API_OPENGLES2_BIT, NO_EXTRA },
 794    /* GL_OES_EGL_image_external */
 795    { GL_TEXTURE_BINDING_EXTERNAL_OES, LOC_CUSTOM,
 796      TYPE_INT, TEXTURE_EXTERNAL_INDEX, extra_OES_EGL_image_external },
 797    { GL_TEXTURE_EXTERNAL_OES, LOC_CUSTOM,
 798      TYPE_BOOLEAN, 0, extra_OES_EGL_image_external },
 799 #endif
 800
 801 #if FEATURE_ES2
 802    /* Enums unique to OpenGL ES 2.0 */
 803    { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },
 804    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 805    { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },
 806    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 807    { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },
 808    /* OES_get_program_binary */
 809    { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 810    { GL_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 811 #endif /* FEATURE_ES2 */
 812
 813 #if FEATURE_GL
 814    /* Remaining enums are only in OpenGL */
 815    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGL_CORE_BIT, NO_EXTRA },
 816    { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },
 817    { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },
 818    { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },
 819    { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },
 820    { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
 821    { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },
 822    { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },
 823    { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },
 824    { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },
 825    { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },
 826    { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },
 827    { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },
 828    { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },
 829    { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },
 830    { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },
 831    { GL_CURRENT_INDEX,
 832      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
 833      extra_flush_current },
 834    { GL_CURRENT_RASTER_COLOR,
 835      CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },
 836    { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },
 837    { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },
 838    { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },
 839    { GL_CURRENT_RASTER_SECONDARY_COLOR,
 840      CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },
 841    { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 842      extra_valid_texture_unit },
 843    { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },
 844    { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },
 845    { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },
 846    { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },
 847    { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
 848    { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 849    { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },
 850    { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },
 851    { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },
 852    { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },
 853    { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },
 854    { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
 855    { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },
 856    { GL_INDEX_MODE, CONST(0) , NO_EXTRA},
 857    { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },
 858    { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },
 859    { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },
 860    { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },
 861    { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },
 862    { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },
 863    { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 864    { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },
 865    { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },
 866    { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },
 867    { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 868    { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },
 869    { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },
 870    { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },
 871    { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },
 872    { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },
 873    { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },
 874    { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },
 875    { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },
 876    { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },
 877    { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },
 878    { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },
 879    { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },
 880    { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },
 881    { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },
 882    { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },
 883    { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },
 884    { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },
 885    { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },
 886    { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },
 887    { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },
 888    { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },
 889    { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },
 890    { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },
 891    { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },
 892    { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },
 893    { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },
 894    { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },
 895    { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },
 896
 897    { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },
 898    { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },
 899    { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },
 900    { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },
 901    { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },
 902    { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },
 903    { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },
 904    { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },
 905    { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },
 906    { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },
 907    { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },
 908    { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },
 909    { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },
 910    { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },
 911    { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },
 912    { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },
 913    { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },
 914    { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },
 915    { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },
 916    { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },
 917    { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },
 918    { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },
 919    { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },
 920    { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },
 921    { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },
 922    { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },
 923    { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },
 924    { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },
 925    { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },
 926    { GL_RGBA_MODE, CONST(1), NO_EXTRA },
 927    { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },
 928
 929    { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },
 930
 931    { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 932    { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 933    { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 934    { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 935
 936    { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },
 937    { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,
 938      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 939    { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,
 940      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 941    { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,
 942      CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },
 943
 944    { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
 945      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 946    { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
 947      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 948    { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
 949      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 950    { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
 951      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 952    { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },
 953    { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },
 954    { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },
 955    { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },
 956
 957    /* Vertex arrays */
 958    { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 959    { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 960    { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 961    { GL_INDEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled), NO_EXTRA },
 962    { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Type), NO_EXTRA },
 963    { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Stride), NO_EXTRA },
 964    { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 965    { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 966    { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled), NO_EXTRA },
 967    { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Stride), NO_EXTRA },
 968    { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 969
 970    /* GL_ARB_texture_compression */
 971    { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression), NO_EXTRA },
 972
 973    /* GL_EXT_compiled_vertex_array */
 974    { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
 975      extra_EXT_compiled_vertex_array },
 976    { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
 977      extra_EXT_compiled_vertex_array },
 978
 979    /* GL_ARB_transpose_matrix */
 980    { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
 981      CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },
 982    { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
 983      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
 984    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
 985
 986    /* GL_EXT_secondary_color */
 987    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
 988      extra_EXT_secondary_color_ARB_vertex_program },
 989    { GL_CURRENT_SECONDARY_COLOR_EXT,
 990      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
 991      extra_EXT_secondary_color_flush_current },
 992    { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR1].Enabled),
 993      extra_EXT_secondary_color },
 994    { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR1].Type),
 995      extra_EXT_secondary_color },
 996    { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Stride),
 997      extra_EXT_secondary_color },
 998    { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Size),
 999      extra_EXT_secondary_color },
1000
1001    /* GL_EXT_fog_coord */
1002    { GL_CURRENT_FOG_COORDINATE_EXT,
1003      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
1004      extra_EXT_fog_coord_flush_current },
1005    { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_FOG].Enabled),
1006      extra_EXT_fog_coord },
1007    { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_FOG].Type),
1008      extra_EXT_fog_coord },
1009    { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_FOG].Stride),
1010      extra_EXT_fog_coord },
1011    { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
1012      extra_EXT_fog_coord },
1013
1014    /* GL_NV_fog_distance */
1015    { GL_FOG_DISTANCE_MODE_NV, CONTEXT_ENUM(Fog.FogDistanceMode),
1016      extra_NV_fog_distance },
1017
1018    /* GL_IBM_rasterpos_clip */
1019    { GL_RASTER_POSITION_UNCLIPPED_IBM,
1020      CONTEXT_BOOL(Transform.RasterPositionUnclipped),
1021      extra_IBM_rasterpos_clip },
1022
1023    /* GL_NV_point_sprite */
1024    { GL_POINT_SPRITE_R_MODE_NV,
1025      CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
1026    { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
1027      extra_NV_point_sprite_ARB_point_sprite },
1028
1029    /* GL_NV_vertex_program */
1030    { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1031      extra_NV_vertex_program },
1032    { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(0)].Enabled),
1033      extra_NV_vertex_program },
1034    { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(1)].Enabled),
1035      extra_NV_vertex_program },
1036    { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(2)].Enabled),
1037      extra_NV_vertex_program },
1038    { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(3)].Enabled),
1039      extra_NV_vertex_program },
1040    { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(4)].Enabled),
1041      extra_NV_vertex_program },
1042    { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(5)].Enabled),
1043      extra_NV_vertex_program },
1044    { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(6)].Enabled),
1045      extra_NV_vertex_program },
1046    { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(7)].Enabled),
1047      extra_NV_vertex_program },
1048    { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(8)].Enabled),
1049      extra_NV_vertex_program },
1050    { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(9)].Enabled),
1051      extra_NV_vertex_program },
1052    { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(10)].Enabled),
1053      extra_NV_vertex_program },
1054    { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(11)].Enabled),
1055      extra_NV_vertex_program },
1056    { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(12)].Enabled),
1057      extra_NV_vertex_program },
1058    { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(13)].Enabled),
1059      extra_NV_vertex_program },
1060    { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(14)].Enabled),
1061      extra_NV_vertex_program },
1062    { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(15)].Enabled),
1063      extra_NV_vertex_program },
1064    { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
1065      extra_NV_vertex_program },
1066    { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
1067      extra_NV_vertex_program },
1068    { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
1069      extra_NV_vertex_program },
1070    { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
1071      extra_NV_vertex_program },
1072    { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
1073      extra_NV_vertex_program },
1074    { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
1075      extra_NV_vertex_program },
1076    { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
1077      extra_NV_vertex_program },
1078    { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
1079      extra_NV_vertex_program },
1080    { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
1081      extra_NV_vertex_program },
1082    { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
1083      extra_NV_vertex_program },
1084    { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
1085      extra_NV_vertex_program },
1086    { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
1087      extra_NV_vertex_program },
1088    { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
1089      extra_NV_vertex_program },
1090    { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
1091      extra_NV_vertex_program },
1092    { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
1093      extra_NV_vertex_program },
1094    { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
1095      extra_NV_vertex_program },
1096
1097    /* GL_NV_fragment_program */
1098    { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
1099      extra_NV_fragment_program },
1100    { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1101      extra_NV_fragment_program },
1102    { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
1103      CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
1104      extra_NV_fragment_program },
1105
1106    /* GL_NV_texture_rectangle */
1107    { GL_TEXTURE_RECTANGLE_NV,
1108      LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },
1109    { GL_TEXTURE_BINDING_RECTANGLE_NV,
1110      LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },
1111    { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,
1112      CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },
1113
1114    /* GL_EXT_stencil_two_side */
1115    { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
1116          extra_EXT_stencil_two_side },
1117    { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
1118
1119    /* GL_NV_light_max_exponent */
1120    { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
1121      extra_NV_light_max_exponent },
1122    { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
1123      extra_NV_light_max_exponent },
1124
1125    /* GL_NV_primitive_restart */
1126    { GL_PRIMITIVE_RESTART_NV, CONTEXT_BOOL(Array.PrimitiveRestart),
1127      extra_NV_primitive_restart },
1128    { GL_PRIMITIVE_RESTART_INDEX_NV, CONTEXT_INT(Array.RestartIndex),
1129      extra_NV_primitive_restart },
1130
1131    /* GL_ARB_vertex_buffer_object */
1132    { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1133      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR_INDEX].BufferObj), NO_EXTRA },
1134    { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1135      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_EDGEFLAG].BufferObj), NO_EXTRA },
1136    { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1137      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR1].BufferObj), NO_EXTRA },
1138    { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1139      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_FOG].BufferObj), NO_EXTRA },
1140
1141    /* GL_EXT_pixel_buffer_object */
1142    { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1143      extra_EXT_pixel_buffer_object },
1144    { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1145      extra_EXT_pixel_buffer_object },
1146
1147    /* GL_ARB_vertex_program */
1148    { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
1149      CONTEXT_BOOL(VertexProgram.Enabled),
1150      extra_ARB_vertex_program_NV_vertex_program },
1151    { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
1152      CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
1153      extra_ARB_vertex_program_NV_vertex_program },
1154    { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1155      CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
1156      extra_ARB_vertex_program_NV_vertex_program },
1157    { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
1158      CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
1159      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1160    { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
1161      CONTEXT_INT(Const.MaxProgramMatrices),
1162      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1163    { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
1164      LOC_CUSTOM, TYPE_INT, 0,
1165      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1166
1167    { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1168      LOC_CUSTOM, TYPE_MATRIX, 0,
1169      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1170    { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1171      LOC_CUSTOM, TYPE_MATRIX, 0,
1172      extra_ARB_vertex_program_ARB_fragment_program },
1173
1174    { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
1175      CONTEXT_INT(Program.ErrorPos),
1176      extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1177
1178    /* GL_ARB_fragment_program */
1179    { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
1180      extra_ARB_fragment_program },
1181
1182    /* GL_EXT_depth_bounds_test */
1183    { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
1184      extra_EXT_depth_bounds_test },
1185    { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
1186      extra_EXT_depth_bounds_test },
1187
1188    /* GL_ARB_depth_clamp*/
1189    { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),
1190      extra_ARB_depth_clamp },
1191
1192    /* GL_ATI_fragment_shader */
1193    { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },
1194    { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },
1195    { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },
1196    { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },
1197    { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },
1198    { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },
1199    { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },
1200    { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,
1201      CONST(3), extra_ATI_fragment_shader },
1202
1203    /* GL_EXT_framebuffer_blit
1204     * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */
1205    { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1206      extra_EXT_framebuffer_blit },
1207
1208    /* GL_EXT_provoking_vertex */
1209    { GL_PROVOKING_VERTEX_EXT,
1210      CONTEXT_ENUM(Light.ProvokingVertex), extra_EXT_provoking_vertex },
1211    { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,
1212      CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),
1213      extra_EXT_provoking_vertex },
1214
1215    /* GL_ARB_framebuffer_object */
1216    { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),
1217      extra_ARB_framebuffer_object_EXT_framebuffer_multisample },
1218
1219    /* GL_ARB_seamless_cube_map */
1220    { GL_TEXTURE_CUBE_MAP_SEAMLESS,
1221      CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },
1222
1223    /* GL_ARB_sync */
1224    { GL_MAX_SERVER_WAIT_TIMEOUT,
1225      CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },
1226
1227    /* GL_EXT_texture_integer */
1228    { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),
1229      extra_EXT_texture_integer },
1230
1231    /* GL_EXT_transform_feedback */
1232    { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1233      extra_EXT_transform_feedback },
1234    { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(RasterDiscard),
1235      extra_EXT_transform_feedback },
1236    { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
1237      CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),
1238      extra_EXT_transform_feedback },
1239    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
1240      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1241      extra_EXT_transform_feedback },
1242    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
1243      CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),
1244      extra_EXT_transform_feedback },
1245
1246    /* GL_ARB_transform_feedback2 */
1247    { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1248      extra_ARB_transform_feedback2 },
1249    { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1250      extra_ARB_transform_feedback2 },
1251    { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1252      extra_ARB_transform_feedback2 },
1253
1254    /* GL_ARB_transform_feedback3 */
1255    { GL_MAX_TRANSFORM_FEEDBACK_BUFFERS,
1256      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1257      extra_ARB_transform_feedback3 },
1258    { GL_MAX_VERTEX_STREAMS,
1259      CONTEXT_INT(Const.MaxVertexStreams),
1260      extra_ARB_transform_feedback3 },
1261
1262    /* GL_ARB_geometry_shader4 */
1263    { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB,
1264      CONTEXT_INT(Const.MaxGeometryTextureImageUnits),
1265      extra_ARB_geometry_shader4 },
1266    { GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB,
1267      CONTEXT_INT(Const.MaxGeometryOutputVertices),
1268      extra_ARB_geometry_shader4 },
1269    { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB,
1270      CONTEXT_INT(Const.MaxGeometryTotalOutputComponents),
1271      extra_ARB_geometry_shader4 },
1272    { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB,
1273      CONTEXT_INT(Const.GeometryProgram.MaxUniformComponents),
1274      extra_ARB_geometry_shader4 },
1275    { GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB,
1276      CONTEXT_INT(Const.MaxGeometryVaryingComponents),
1277      extra_ARB_geometry_shader4 },
1278    { GL_MAX_VERTEX_VARYING_COMPONENTS_ARB,
1279      CONTEXT_INT(Const.MaxVertexVaryingComponents),
1280      extra_ARB_geometry_shader4 },
1281
1282    /* GL_ARB_color_buffer_float */
1283    { GL_RGBA_FLOAT_MODE_ARB, BUFFER_FIELD(Visual.floatMode, TYPE_BOOLEAN), 0 },
1284
1285    /* GL_EXT_gpu_shader4 / GLSL 1.30 */
1286    { GL_MIN_PROGRAM_TEXEL_OFFSET,
1287      CONTEXT_INT(Const.MinProgramTexelOffset),
1288      extra_GLSL_130 },
1289    { GL_MAX_PROGRAM_TEXEL_OFFSET,
1290      CONTEXT_INT(Const.MaxProgramTexelOffset),
1291      extra_GLSL_130 },
1292
1293    /* GL_ARB_texture_buffer_object */
1294    { GL_MAX_TEXTURE_BUFFER_SIZE_ARB, CONTEXT_INT(Const.MaxTextureBufferSize),
1295      extra_texture_buffer_object },
1296    { GL_TEXTURE_BINDING_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1297      extra_texture_buffer_object },
1298    { GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1299      TEXTURE_BUFFER_INDEX, extra_texture_buffer_object },
1300    { GL_TEXTURE_BUFFER_FORMAT_ARB, LOC_CUSTOM, TYPE_INT, 0,
1301      extra_texture_buffer_object },
1302    { GL_TEXTURE_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1303      extra_texture_buffer_object },
1304
1305    /* GL_ARB_sampler_objects / GL 3.3 */
1306    { GL_SAMPLER_BINDING,
1307      LOC_CUSTOM, TYPE_INT, GL_SAMPLER_BINDING, NO_EXTRA },
1308
1309    /* GL 3.0 */
1310    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1311    { GL_MAJOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1312    { GL_MINOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30  },
1313    { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
1314
1315    /* GL3.0 / GL_EXT_framebuffer_sRGB */
1316    { GL_FRAMEBUFFER_SRGB_EXT, CONTEXT_BOOL(Color.sRGBEnabled), extra_EXT_framebuffer_sRGB },
1317    { GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, BUFFER_INT(Visual.sRGBCapable), extra_EXT_framebuffer_sRGB },
1318
1319    /* GL 3.1 */
1320    /* NOTE: different enum values for GL_PRIMITIVE_RESTART_NV
1321     * vs. GL_PRIMITIVE_RESTART!
1322     */
1323    { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),
1324      extra_version_31 },
1325    { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),
1326      extra_version_31 },
1327
1328
1329    /* GL 3.2 */
1330    { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
1331      extra_version_32 },
1332
1333    /* GL_ARB_robustness */
1334    { GL_RESET_NOTIFICATION_STRATEGY_ARB, CONTEXT_ENUM(Const.ResetStrategy), NO_EXTRA },
1335
1336    /* GL_ARB_debug_output */
1337    { GL_DEBUG_LOGGED_MESSAGES_ARB, CONTEXT_INT(Debug.NumMessages), NO_EXTRA },
1338    { GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB, CONTEXT_INT(Debug.NextMsgLength), NO_EXTRA },
1339    { GL_MAX_DEBUG_LOGGED_MESSAGES_ARB, CONST(MAX_DEBUG_LOGGED_MESSAGES), NO_EXTRA },
1340    { GL_MAX_DEBUG_MESSAGE_LENGTH_ARB, CONST(MAX_DEBUG_MESSAGE_LENGTH), NO_EXTRA },
1341
1342    { GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, CONTEXT_INT(Const.MaxDualSourceDrawBuffers), extra_ARB_blend_func_extended },
1343
1344    /* GL_ARB_uniform_buffer_object */
1345    { GL_MAX_VERTEX_UNIFORM_BLOCKS, CONTEXT_INT(Const.VertexProgram.MaxUniformBlocks),
1346      extra_ARB_uniform_buffer_object },
1347    { GL_MAX_FRAGMENT_UNIFORM_BLOCKS, CONTEXT_INT(Const.FragmentProgram.MaxUniformBlocks),
1348      extra_ARB_uniform_buffer_object },
1349    { GL_MAX_GEOMETRY_UNIFORM_BLOCKS, CONTEXT_INT(Const.GeometryProgram.MaxUniformBlocks),
1350      extra_ARB_uniform_buffer_object_and_geometry_shader },
1351    { GL_MAX_COMBINED_UNIFORM_BLOCKS, CONTEXT_INT(Const.MaxCombinedUniformBlocks),
1352      extra_ARB_uniform_buffer_object },
1353    { GL_MAX_UNIFORM_BLOCK_SIZE, CONTEXT_INT(Const.MaxUniformBlockSize),
1354      extra_ARB_uniform_buffer_object },
1355    { GL_MAX_UNIFORM_BUFFER_BINDINGS, CONTEXT_INT(Const.MaxUniformBufferBindings),
1356      extra_ARB_uniform_buffer_object },
1357
1358    { GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS, CONTEXT_INT(Const.VertexProgram.MaxCombinedUniformComponents),
1359      extra_ARB_uniform_buffer_object },
1360    { GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS, CONTEXT_INT(Const.FragmentProgram.MaxCombinedUniformComponents),
1361      extra_ARB_uniform_buffer_object },
1362    { GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS, CONTEXT_INT(Const.GeometryProgram.MaxCombinedUniformComponents),
1363      extra_ARB_uniform_buffer_object_and_geometry_shader },
1364    { GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, CONTEXT_INT(Const.UniformBufferOffsetAlignment),
1365      extra_ARB_uniform_buffer_object },
1366
1367    { GL_UNIFORM_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_uniform_buffer_object },
1368
1369    /* GL_ARB_timer_query */
1370    { GL_TIMESTAMP, LOC_CUSTOM, TYPE_INT64, 0, extra_ARB_timer_query }
1371
1372 #endif /* FEATURE_GL */
1373 };
1374
1375 /* All we need now is a way to look up the value struct from the enum.
1376  * The code generated by gcc for the old generated big switch
1377  * statement is a big, balanced, open coded if/else tree, essentially
1378  * an unrolled binary search.  It would be natural to sort the new
1379  * enum table and use bsearch(), but we will use a read-only hash
1380  * table instead.  bsearch() has a nice guaranteed worst case
1381  * performance, but we're also guaranteed to hit that worst case
1382  * (log2(n) iterations) for about half the enums.  Instead, using an
1383  * open addressing hash table, we can find the enum on the first try
1384  * for 80% of the enums, 1 collision for 10% and never more than 5
1385  * collisions for any enum (typical numbers).  And the code is very
1386  * simple, even though it feels a little magic. */
1387
1388 static unsigned short table[1024];
1389 static const int prime_factor = 89, prime_step = 281;
1390
1391 #ifdef GET_DEBUG
1392 static void
1393 print_table_stats(void)
1394 {
1395    int i, j, collisions[11], count, hash, mask;
1396    const struct value_desc *d;
1397
1398    count = 0;
1399    mask = Elements(table) - 1;
1400    memset(collisions, 0, sizeof collisions);
1401
1402    for (i = 0; i < Elements(table); i++) {
1403       if (!table[i])
1404          continue;
1405       count++;
1406       d = &values[table[i]];
1407       hash = (d->pname * prime_factor);
1408       j = 0;
1409       while (1) {
1410          if (values[table[hash & mask]].pname == d->pname)
1411             break;
1412          hash += prime_step;
1413          j++;
1414       }
1415
1416       if (j < 10)
1417          collisions[j]++;
1418       else
1419          collisions[10]++;
1420    }
1421
1422    printf("number of enums: %d (total %d)\n", count, Elements(values));
1423    for (i = 0; i < Elements(collisions) - 1; i++)
1424       if (collisions[i] > 0)
1425          printf("  %d enums with %d %scollisions\n",
1426                collisions[i], i, i == 10 ? "or more " : "");
1427 }
1428 #endif
1429
1430 /**
1431  * Initialize the enum hash for a given API
1432  *
1433  * This is called from one_time_init() to insert the enum values that
1434  * are valid for the API in question into the enum hash table.
1435  *
1436  * \param the current context, for determining the API in question
1437  */
1438 void _mesa_init_get_hash(struct gl_context *ctx)
1439 {
1440    int i, hash, index, mask;
1441    int api_mask = 0, api_bit;
1442
1443    mask = Elements(table) - 1;
1444    api_bit = 1 << ctx->API;
1445
1446    for (i = 0; i < Elements(values); i++) {
1447       if (values[i].type == TYPE_API_MASK) {
1448          api_mask = values[i].offset;
1449          continue;
1450       }
1451       if (!(api_mask & api_bit))
1452          continue;
1453
1454       hash = (values[i].pname * prime_factor) & mask;
1455       while (1) {
1456          index = hash & mask;
1457          if (!table[index]) {
1458             table[index] = i;
1459             break;
1460          }
1461          hash += prime_step;
1462       }
1463    }
1464
1465 #ifdef GET_DEBUG
1466    print_table_stats();
1467 #endif
1468 }
1469
1470 /**
1471  * Handle irregular enums
1472  *
1473  * Some values don't conform to the "well-known type at context
1474  * pointer + offset" pattern, so we have this function to catch all
1475  * the corner cases.  Typically, it's a computed value or a one-off
1476  * pointer to a custom struct or something.
1477  *
1478  * In this case we can't return a pointer to the value, so we'll have
1479  * to use the temporary variable 'v' declared back in the calling
1480  * glGet*v() function to store the result.
1481  *
1482  * \param ctx the current context
1483  * \param d the struct value_desc that describes the enum
1484  * \param v pointer to the tmp declared in the calling glGet*v() function
1485  */
1486 static void
1487 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
1488 {
1489    struct gl_buffer_object **buffer_obj;
1490    struct gl_client_array *array;
1491    GLuint unit, *p;
1492
1493    switch (d->pname) {
1494    case GL_MAJOR_VERSION:
1495       v->value_int = ctx->Version / 10;
1496       break;
1497    case GL_MINOR_VERSION:
1498       v->value_int = ctx->Version % 10;
1499       break;
1500
1501    case GL_TEXTURE_1D:
1502    case GL_TEXTURE_2D:
1503    case GL_TEXTURE_3D:
1504    case GL_TEXTURE_1D_ARRAY_EXT:
1505    case GL_TEXTURE_2D_ARRAY_EXT:
1506    case GL_TEXTURE_CUBE_MAP_ARB:
1507    case GL_TEXTURE_RECTANGLE_NV:
1508    case GL_TEXTURE_EXTERNAL_OES:
1509       v->value_bool = _mesa_IsEnabled(d->pname);
1510       break;
1511
1512    case GL_LINE_STIPPLE_PATTERN:
1513       /* This is the only GLushort, special case it here by promoting
1514        * to an int rather than introducing a new type. */
1515       v->value_int = ctx->Line.StipplePattern;
1516       break;
1517
1518    case GL_CURRENT_RASTER_TEXTURE_COORDS:
1519       unit = ctx->Texture.CurrentUnit;
1520       v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
1521       v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
1522       v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
1523       v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
1524       break;
1525
1526    case GL_CURRENT_TEXTURE_COORDS:
1527       unit = ctx->Texture.CurrentUnit;
1528       v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
1529       v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
1530       v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
1531       v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
1532       break;
1533
1534    case GL_COLOR_WRITEMASK:
1535       v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
1536       v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
1537       v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
1538       v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
1539       break;
1540
1541    case GL_EDGE_FLAG:
1542       v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
1543       break;
1544
1545    case GL_READ_BUFFER:
1546       v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
1547       break;
1548
1549    case GL_MAP2_GRID_DOMAIN:
1550       v->value_float_4[0] = ctx->Eval.MapGrid2u1;
1551       v->value_float_4[1] = ctx->Eval.MapGrid2u2;
1552       v->value_float_4[2] = ctx->Eval.MapGrid2v1;
1553       v->value_float_4[3] = ctx->Eval.MapGrid2v2;
1554       break;
1555
1556    case GL_TEXTURE_STACK_DEPTH:
1557       unit = ctx->Texture.CurrentUnit;
1558       v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
1559       break;
1560    case GL_TEXTURE_MATRIX:
1561       unit = ctx->Texture.CurrentUnit;
1562       v->value_matrix = ctx->TextureMatrixStack[unit].Top;
1563       break;
1564
1565    case GL_TEXTURE_COORD_ARRAY:
1566    case GL_TEXTURE_COORD_ARRAY_SIZE:
1567    case GL_TEXTURE_COORD_ARRAY_TYPE:
1568    case GL_TEXTURE_COORD_ARRAY_STRIDE:
1569       array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
1570       v->value_int = *(GLuint *) ((char *) array + d->offset);
1571       break;
1572
1573    case GL_ACTIVE_TEXTURE_ARB:
1574       v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
1575       break;
1576    case GL_CLIENT_ACTIVE_TEXTURE_ARB:
1577       v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
1578       break;
1579
1580    case GL_MODELVIEW_STACK_DEPTH:
1581    case GL_PROJECTION_STACK_DEPTH:
1582       v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
1583       break;
1584
1585    case GL_MAX_TEXTURE_SIZE:
1586    case GL_MAX_3D_TEXTURE_SIZE:
1587    case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
1588       p = (GLuint *) ((char *) ctx + d->offset);
1589       v->value_int = 1 << (*p - 1);
1590       break;
1591
1592    case GL_SCISSOR_BOX:
1593       v->value_int_4[0] = ctx->Scissor.X;
1594       v->value_int_4[1] = ctx->Scissor.Y;
1595       v->value_int_4[2] = ctx->Scissor.Width;
1596       v->value_int_4[3] = ctx->Scissor.Height;
1597       break;
1598
1599    case GL_LIST_INDEX:
1600       v->value_int =
1601          ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
1602       break;
1603    case GL_LIST_MODE:
1604       if (!ctx->CompileFlag)
1605          v->value_enum = 0;
1606       else if (ctx->ExecuteFlag)
1607          v->value_enum = GL_COMPILE_AND_EXECUTE;
1608       else
1609          v->value_enum = GL_COMPILE;
1610       break;
1611
1612    case GL_VIEWPORT:
1613       v->value_int_4[0] = ctx->Viewport.X;
1614       v->value_int_4[1] = ctx->Viewport.Y;
1615       v->value_int_4[2] = ctx->Viewport.Width;
1616       v->value_int_4[3] = ctx->Viewport.Height;
1617       break;
1618
1619    case GL_ACTIVE_STENCIL_FACE_EXT:
1620       v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
1621       break;
1622
1623    case GL_STENCIL_FAIL:
1624       v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
1625       break;
1626    case GL_STENCIL_FUNC:
1627       v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
1628       break;
1629    case GL_STENCIL_PASS_DEPTH_FAIL:
1630       v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
1631       break;
1632    case GL_STENCIL_PASS_DEPTH_PASS:
1633       v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
1634       break;
1635    case GL_STENCIL_REF:
1636       v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
1637       break;
1638    case GL_STENCIL_VALUE_MASK:
1639       v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
1640       break;
1641    case GL_STENCIL_WRITEMASK:
1642       v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
1643       break;
1644
1645    case GL_NUM_EXTENSIONS:
1646       v->value_int = _mesa_get_extension_count(ctx);
1647       break;
1648
1649    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
1650       v->value_int = _mesa_get_color_read_type(ctx);
1651       break;
1652    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
1653       v->value_int = _mesa_get_color_read_format(ctx);
1654       break;
1655
1656    case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
1657       v->value_int = ctx->CurrentStack->Depth + 1;
1658       break;
1659    case GL_CURRENT_MATRIX_ARB:
1660    case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
1661       v->value_matrix = ctx->CurrentStack->Top;
1662       break;
1663
1664    case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
1665       v->value_int = _mesa_get_compressed_formats(ctx, NULL);
1666       break;
1667    case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
1668       v->value_int_n.n =
1669          _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
1670       ASSERT(v->value_int_n.n <= 100);
1671       break;
1672
1673    case GL_MAX_VARYING_FLOATS_ARB:
1674       v->value_int = ctx->Const.MaxVarying * 4;
1675       break;
1676
1677    /* Various object names */
1678
1679    case GL_TEXTURE_BINDING_1D:
1680    case GL_TEXTURE_BINDING_2D:
1681    case GL_TEXTURE_BINDING_3D:
1682    case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
1683    case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
1684    case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
1685    case GL_TEXTURE_BINDING_RECTANGLE_NV:
1686    case GL_TEXTURE_BINDING_EXTERNAL_OES:
1687       unit = ctx->Texture.CurrentUnit;
1688       v->value_int =
1689          ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
1690       break;
1691
1692    /* GL_ARB_vertex_buffer_object */
1693    case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
1694    case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
1695    case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
1696    case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
1697    case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
1698    case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
1699    case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
1700       buffer_obj = (struct gl_buffer_object **)
1701          ((char *) ctx->Array.ArrayObj + d->offset);
1702       v->value_int = (*buffer_obj)->Name;
1703       break;
1704    case GL_ARRAY_BUFFER_BINDING_ARB:
1705       v->value_int = ctx->Array.ArrayBufferObj->Name;
1706       break;
1707    case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
1708       v->value_int =
1709          ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
1710       break;
1711    case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
1712       v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
1713       break;
1714
1715    /* ARB_copy_buffer */
1716    case GL_COPY_READ_BUFFER:
1717       v->value_int = ctx->CopyReadBuffer->Name;
1718       break;
1719    case GL_COPY_WRITE_BUFFER:
1720       v->value_int = ctx->CopyWriteBuffer->Name;
1721       break;
1722
1723    case GL_FRAGMENT_PROGRAM_BINDING_NV:
1724       v->value_int =
1725          ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
1726       break;
1727    case GL_VERTEX_PROGRAM_BINDING_NV:
1728       v->value_int =
1729          ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
1730       break;
1731    case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
1732       v->value_int = ctx->Pack.BufferObj->Name;
1733       break;
1734    case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
1735       v->value_int = ctx->Unpack.BufferObj->Name;
1736       break;
1737    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1738       v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
1739       break;
1740    case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
1741       v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
1742       break;
1743    case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
1744       v->value_int = ctx->TransformFeedback.CurrentObject->Active;
1745       break;
1746    case GL_TRANSFORM_FEEDBACK_BINDING:
1747       v->value_int = ctx->TransformFeedback.CurrentObject->Name;
1748       break;
1749    case GL_CURRENT_PROGRAM:
1750       v->value_int =
1751          ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
1752       break;
1753    case GL_READ_FRAMEBUFFER_BINDING_EXT:
1754       v->value_int = ctx->ReadBuffer->Name;
1755       break;
1756    case GL_RENDERBUFFER_BINDING_EXT:
1757       v->value_int =
1758          ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
1759       break;
1760    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
1761       v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
1762       break;
1763
1764    case GL_FOG_COLOR:
1765       if(ctx->Color._ClampFragmentColor)
1766          COPY_4FV(v->value_float_4, ctx->Fog.Color);
1767       else
1768          COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
1769       break;
1770    case GL_COLOR_CLEAR_VALUE:
1771       if(ctx->Color._ClampFragmentColor) {
1772          v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
1773          v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
1774          v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
1775          v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
1776       } else
1777          COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
1778       break;
1779    case GL_BLEND_COLOR_EXT:
1780       if(ctx->Color._ClampFragmentColor)
1781          COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
1782       else
1783          COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
1784       break;
1785    case GL_ALPHA_TEST_REF:
1786       if(ctx->Color._ClampFragmentColor)
1787          v->value_float = ctx->Color.AlphaRef;
1788       else
1789          v->value_float = ctx->Color.AlphaRefUnclamped;
1790       break;
1791    case GL_MAX_VERTEX_UNIFORM_VECTORS:
1792       v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
1793       break;
1794
1795    case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
1796       v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
1797       break;
1798
1799    /* GL_ARB_texture_buffer_object */
1800    case GL_TEXTURE_BUFFER_ARB:
1801       v->value_int = ctx->Texture.BufferObject->Name;
1802       break;
1803    case GL_TEXTURE_BINDING_BUFFER_ARB:
1804       unit = ctx->Texture.CurrentUnit;
1805       v->value_int =
1806          ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
1807       break;
1808    case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
1809       {
1810          struct gl_buffer_object *buf =
1811             ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1812             .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
1813          v->value_int = buf ? buf->Name : 0;
1814       }
1815       break;
1816    case GL_TEXTURE_BUFFER_FORMAT_ARB:
1817       v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1818          .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
1819       break;
1820
1821    /* GL_ARB_sampler_objects */
1822    case GL_SAMPLER_BINDING:
1823       {
1824          struct gl_sampler_object *samp =
1825             ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
1826          v->value_int = samp ? samp->Name : 0;
1827       }
1828       break;
1829    /* GL_ARB_uniform_buffer_object */
1830    case GL_UNIFORM_BUFFER_BINDING:
1831       v->value_int = ctx->UniformBuffer->Name;
1832       break;
1833    /* GL_ARB_timer_query */
1834    case GL_TIMESTAMP:
1835       if (ctx->Driver.GetTimestamp) {
1836          v->value_int64 = ctx->Driver.GetTimestamp(ctx);
1837       }
1838       else {
1839          _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
1840       }
1841       break;
1842    }
1843 }
1844
1845 /**
1846  * Check extra constraints on a struct value_desc descriptor
1847  *
1848  * If a struct value_desc has a non-NULL extra pointer, it means that
1849  * there are a number of extra constraints to check or actions to
1850  * perform.  The extras is just an integer array where each integer
1851  * encode different constraints or actions.
1852  *
1853  * \param ctx current context
1854  * \param func name of calling glGet*v() function for error reporting
1855  * \param d the struct value_desc that has the extra constraints
1856  *
1857  * \return GL_FALSE if one of the constraints was not satisfied,
1858  *     otherwise GL_TRUE.
1859  */
1860 static GLboolean
1861 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1862 {
1863    const GLuint version = ctx->Version;
1864    int total, enabled;
1865    const int *e;
1866
1867    total = 0;
1868    enabled = 0;
1869    for (e = d->extra; *e != EXTRA_END; e++)
1870       switch (*e) {
1871       case EXTRA_VERSION_30:
1872          if (version >= 30) {
1873             total++;
1874             enabled++;
1875          }
1876          break;
1877       case EXTRA_VERSION_31:
1878          if (version >= 31) {
1879             total++;
1880             enabled++;
1881          }
1882          break;
1883       case EXTRA_VERSION_32:
1884          if (version >= 32) {
1885             total++;
1886             enabled++;
1887          }
1888          break;
1889       case EXTRA_NEW_FRAG_CLAMP:
1890          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1891             _mesa_update_state(ctx);
1892          break;
1893       case EXTRA_API_ES2:
1894          if (ctx->API == API_OPENGLES2) {
1895             total++;
1896             enabled++;
1897          }
1898          break;
1899       case EXTRA_API_GL:
1900          if (_mesa_is_desktop_gl(ctx)) {
1901             total++;
1902             enabled++;
1903          }
1904          break;
1905       case EXTRA_NEW_BUFFERS:
1906          if (ctx->NewState & _NEW_BUFFERS)
1907             _mesa_update_state(ctx);
1908          break;
1909       case EXTRA_FLUSH_CURRENT:
1910          FLUSH_CURRENT(ctx, 0);
1911          break;
1912       case EXTRA_VALID_DRAW_BUFFER:
1913          if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1914             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1915                         func, d->pname - GL_DRAW_BUFFER0_ARB);
1916             return GL_FALSE;
1917          }
1918          break;
1919       case EXTRA_VALID_TEXTURE_UNIT:
1920          if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1921             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1922                         func, ctx->Texture.CurrentUnit);
1923             return GL_FALSE;
1924          }
1925          break;
1926       case EXTRA_VALID_CLIP_DISTANCE:
1927          if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1928             _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1929                         func, d->pname - GL_CLIP_DISTANCE0);
1930             return GL_FALSE;
1931          }
1932          break;
1933       case EXTRA_GLSL_130:
1934          if (ctx->Const.GLSLVersion >= 130) {
1935             total++;
1936             enabled++;
1937          }
1938          break;
1939       case EXTRA_END:
1940          break;
1941       default: /* *e is a offset into the extension struct */
1942          total++;
1943          if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1944             enabled++;
1945          break;
1946       }
1947
1948    if (total > 0 && enabled == 0) {
1949       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1950                   _mesa_lookup_enum_by_nr(d->pname));
1951       return GL_FALSE;
1952    }
1953
1954    return GL_TRUE;
1955 }
1956
1957 static const struct value_desc error_value =
1958    { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1959
1960 /**
1961  * Find the struct value_desc corresponding to the enum 'pname'.
1962  *
1963  * We hash the enum value to get an index into the 'table' array,
1964  * which holds the index in the 'values' array of struct value_desc.
1965  * Once we've found the entry, we do the extra checks, if any, then
1966  * look up the value and return a pointer to it.
1967  *
1968  * If the value has to be computed (for example, it's the result of a
1969  * function call or we need to add 1 to it), we use the tmp 'v' to
1970  * store the result.
1971  *
1972  * \param func name of glGet*v() func for error reporting
1973  * \param pname the enum value we're looking up
1974  * \param p is were we return the pointer to the value
1975  * \param v a tmp union value variable in the calling glGet*v() function
1976  *
1977  * \return the struct value_desc corresponding to the enum or a struct
1978  *     value_desc of TYPE_INVALID if not found.  This lets the calling
1979  *     glGet*v() function jump right into a switch statement and
1980  *     handle errors there instead of having to check for NULL.
1981  */
1982 static const struct value_desc *
1983 find_value(const char *func, GLenum pname, void **p, union value *v)
1984 {
1985    GET_CURRENT_CONTEXT(ctx);
1986    struct gl_texture_unit *unit;
1987    int mask, hash;
1988    const struct value_desc *d;
1989
1990    mask = Elements(table) - 1;
1991    hash = (pname * prime_factor);
1992    while (1) {
1993       d = &values[table[hash & mask]];
1994
1995       /* If the enum isn't valid, the hash walk ends with index 0,
1996        * which is the API mask entry at the beginning of values[]. */
1997       if (unlikely(d->type == TYPE_API_MASK)) {
1998          _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1999                _mesa_lookup_enum_by_nr(pname));
2000          return &error_value;
2001       }
2002
2003       if (likely(d->pname == pname))
2004          break;
2005
2006       hash += prime_step;
2007    }
2008
2009    if (unlikely(d->extra && !check_extra(ctx, func, d)))
2010       return &error_value;
2011
2012    switch (d->location) {
2013    case LOC_BUFFER:
2014       *p = ((char *) ctx->DrawBuffer + d->offset);
2015       return d;
2016    case LOC_CONTEXT:
2017       *p = ((char *) ctx + d->offset);
2018       return d;
2019    case LOC_ARRAY:
2020       *p = ((char *) ctx->Array.ArrayObj + d->offset);
2021       return d;
2022    case LOC_TEXUNIT:
2023       unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
2024       *p = ((char *) unit + d->offset);
2025       return d;
2026    case LOC_CUSTOM:
2027       find_custom_value(ctx, d, v);
2028       *p = v;
2029       return d;
2030    default:
2031       assert(0);
2032       break;
2033    }
2034
2035    /* silence warning */
2036    return &error_value;
2037 }
2038
2039 static const int transpose[] = {
2040    0, 4,  8, 12,
2041    1, 5,  9, 13,
2042    2, 6, 10, 14,
2043    3, 7, 11, 15
2044 };
2045
2046 void GLAPIENTRY
2047 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
2048 {
2049    const struct value_desc *d;
2050    union value v;
2051    GLmatrix *m;
2052    int shift, i;
2053    void *p;
2054    GET_CURRENT_CONTEXT(ctx);
2055
2056    ASSERT_OUTSIDE_BEGIN_END(ctx);
2057
2058    d = find_value("glGetBooleanv", pname, &p, &v);
2059    switch (d->type) {
2060    case TYPE_INVALID:
2061       break;
2062    case TYPE_CONST:
2063       params[0] = INT_TO_BOOLEAN(d->offset);
2064       break;
2065
2066    case TYPE_FLOAT_4:
2067    case TYPE_FLOATN_4:
2068       params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
2069    case TYPE_FLOAT_3:
2070    case TYPE_FLOATN_3:
2071       params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
2072    case TYPE_FLOAT_2:
2073    case TYPE_FLOATN_2:
2074       params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
2075    case TYPE_FLOAT:
2076    case TYPE_FLOATN:
2077       params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
2078       break;
2079
2080    case TYPE_DOUBLEN:
2081       params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
2082       break;
2083
2084    case TYPE_INT_4:
2085       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
2086    case TYPE_INT_3:
2087       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
2088    case TYPE_INT_2:
2089    case TYPE_ENUM_2:
2090       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
2091    case TYPE_INT:
2092    case TYPE_ENUM:
2093       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
2094       break;
2095
2096    case TYPE_INT_N:
2097       for (i = 0; i < v.value_int_n.n; i++)
2098          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2099       break;
2100
2101    case TYPE_INT64:
2102       params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
2103       break;
2104
2105    case TYPE_BOOLEAN:
2106       params[0] = ((GLboolean*) p)[0];
2107       break;
2108
2109    case TYPE_MATRIX:
2110       m = *(GLmatrix **) p;
2111       for (i = 0; i < 16; i++)
2112          params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
2113       break;
2114
2115    case TYPE_MATRIX_T:
2116       m = *(GLmatrix **) p;
2117       for (i = 0; i < 16; i++)
2118          params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
2119       break;
2120
2121    case TYPE_BIT_0:
2122    case TYPE_BIT_1:
2123    case TYPE_BIT_2:
2124    case TYPE_BIT_3:
2125    case TYPE_BIT_4:
2126    case TYPE_BIT_5:
2127    case TYPE_BIT_6:
2128    case TYPE_BIT_7:
2129       shift = d->type - TYPE_BIT_0;
2130       params[0] = (*(GLbitfield *) p >> shift) & 1;
2131       break;
2132    }
2133 }
2134
2135 void GLAPIENTRY
2136 _mesa_GetFloatv(GLenum pname, GLfloat *params)
2137 {
2138    const struct value_desc *d;
2139    union value v;
2140    GLmatrix *m;
2141    int shift, i;
2142    void *p;
2143    GET_CURRENT_CONTEXT(ctx);
2144
2145    ASSERT_OUTSIDE_BEGIN_END(ctx);
2146
2147    d = find_value("glGetFloatv", pname, &p, &v);
2148    switch (d->type) {
2149    case TYPE_INVALID:
2150       break;
2151    case TYPE_CONST:
2152       params[0] = (GLfloat) d->offset;
2153       break;
2154
2155    case TYPE_FLOAT_4:
2156    case TYPE_FLOATN_4:
2157       params[3] = ((GLfloat *) p)[3];
2158    case TYPE_FLOAT_3:
2159    case TYPE_FLOATN_3:
2160       params[2] = ((GLfloat *) p)[2];
2161    case TYPE_FLOAT_2:
2162    case TYPE_FLOATN_2:
2163       params[1] = ((GLfloat *) p)[1];
2164    case TYPE_FLOAT:
2165    case TYPE_FLOATN:
2166       params[0] = ((GLfloat *) p)[0];
2167       break;
2168
2169    case TYPE_DOUBLEN:
2170       params[0] = ((GLdouble *) p)[0];
2171       break;
2172
2173    case TYPE_INT_4:
2174       params[3] = (GLfloat) (((GLint *) p)[3]);
2175    case TYPE_INT_3:
2176       params[2] = (GLfloat) (((GLint *) p)[2]);
2177    case TYPE_INT_2:
2178    case TYPE_ENUM_2:
2179       params[1] = (GLfloat) (((GLint *) p)[1]);
2180    case TYPE_INT:
2181    case TYPE_ENUM:
2182       params[0] = (GLfloat) (((GLint *) p)[0]);
2183       break;
2184
2185    case TYPE_INT_N:
2186       for (i = 0; i < v.value_int_n.n; i++)
2187          params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
2188       break;
2189
2190    case TYPE_INT64:
2191       params[0] = ((GLint64 *) p)[0];
2192       break;
2193
2194    case TYPE_BOOLEAN:
2195       params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
2196       break;
2197
2198    case TYPE_MATRIX:
2199       m = *(GLmatrix **) p;
2200       for (i = 0; i < 16; i++)
2201          params[i] = m->m[i];
2202       break;
2203
2204    case TYPE_MATRIX_T:
2205       m = *(GLmatrix **) p;
2206       for (i = 0; i < 16; i++)
2207          params[i] = m->m[transpose[i]];
2208       break;
2209
2210    case TYPE_BIT_0:
2211    case TYPE_BIT_1:
2212    case TYPE_BIT_2:
2213    case TYPE_BIT_3:
2214    case TYPE_BIT_4:
2215    case TYPE_BIT_5:
2216    case TYPE_BIT_6:
2217    case TYPE_BIT_7:
2218       shift = d->type - TYPE_BIT_0;
2219       params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
2220       break;
2221    }
2222 }
2223
2224 void GLAPIENTRY
2225 _mesa_GetIntegerv(GLenum pname, GLint *params)
2226 {
2227    const struct value_desc *d;
2228    union value v;
2229    GLmatrix *m;
2230    int shift, i;
2231    void *p;
2232    GET_CURRENT_CONTEXT(ctx);
2233
2234    ASSERT_OUTSIDE_BEGIN_END(ctx);
2235
2236    d = find_value("glGetIntegerv", pname, &p, &v);
2237    switch (d->type) {
2238    case TYPE_INVALID:
2239       break;
2240    case TYPE_CONST:
2241       params[0] = d->offset;
2242       break;
2243
2244    case TYPE_FLOAT_4:
2245       params[3] = IROUND(((GLfloat *) p)[3]);
2246    case TYPE_FLOAT_3:
2247       params[2] = IROUND(((GLfloat *) p)[2]);
2248    case TYPE_FLOAT_2:
2249       params[1] = IROUND(((GLfloat *) p)[1]);
2250    case TYPE_FLOAT:
2251       params[0] = IROUND(((GLfloat *) p)[0]);
2252       break;
2253
2254    case TYPE_FLOATN_4:
2255       params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
2256    case TYPE_FLOATN_3:
2257       params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
2258    case TYPE_FLOATN_2:
2259       params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
2260    case TYPE_FLOATN:
2261       params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
2262       break;
2263
2264    case TYPE_DOUBLEN:
2265       params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
2266       break;
2267
2268    case TYPE_INT_4:
2269       params[3] = ((GLint *) p)[3];
2270    case TYPE_INT_3:
2271       params[2] = ((GLint *) p)[2];
2272    case TYPE_INT_2:
2273    case TYPE_ENUM_2:
2274       params[1] = ((GLint *) p)[1];
2275    case TYPE_INT:
2276    case TYPE_ENUM:
2277       params[0] = ((GLint *) p)[0];
2278       break;
2279
2280    case TYPE_INT_N:
2281       for (i = 0; i < v.value_int_n.n; i++)
2282          params[i] = v.value_int_n.ints[i];
2283       break;
2284
2285    case TYPE_INT64:
2286       params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
2287       break;
2288
2289    case TYPE_BOOLEAN:
2290       params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
2291       break;
2292
2293    case TYPE_MATRIX:
2294       m = *(GLmatrix **) p;
2295       for (i = 0; i < 16; i++)
2296          params[i] = FLOAT_TO_INT(m->m[i]);
2297       break;
2298
2299    case TYPE_MATRIX_T:
2300       m = *(GLmatrix **) p;
2301       for (i = 0; i < 16; i++)
2302          params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
2303       break;
2304
2305    case TYPE_BIT_0:
2306    case TYPE_BIT_1:
2307    case TYPE_BIT_2:
2308    case TYPE_BIT_3:
2309    case TYPE_BIT_4:
2310    case TYPE_BIT_5:
2311    case TYPE_BIT_6:
2312    case TYPE_BIT_7:
2313       shift = d->type - TYPE_BIT_0;
2314       params[0] = (*(GLbitfield *) p >> shift) & 1;
2315       break;
2316    }
2317 }
2318
2319 void GLAPIENTRY
2320 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
2321 {
2322    const struct value_desc *d;
2323    union value v;
2324    GLmatrix *m;
2325    int shift, i;
2326    void *p;
2327    GET_CURRENT_CONTEXT(ctx);
2328
2329    ASSERT_OUTSIDE_BEGIN_END(ctx);
2330
2331    d = find_value("glGetInteger64v", pname, &p, &v);
2332    switch (d->type) {
2333    case TYPE_INVALID:
2334       break;
2335    case TYPE_CONST:
2336       params[0] = d->offset;
2337       break;
2338
2339    case TYPE_FLOAT_4:
2340       params[3] = IROUND64(((GLfloat *) p)[3]);
2341    case TYPE_FLOAT_3:
2342       params[2] = IROUND64(((GLfloat *) p)[2]);
2343    case TYPE_FLOAT_2:
2344       params[1] = IROUND64(((GLfloat *) p)[1]);
2345    case TYPE_FLOAT:
2346       params[0] = IROUND64(((GLfloat *) p)[0]);
2347       break;
2348
2349    case TYPE_FLOATN_4:
2350       params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
2351    case TYPE_FLOATN_3:
2352       params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
2353    case TYPE_FLOATN_2:
2354       params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
2355    case TYPE_FLOATN:
2356       params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
2357       break;
2358
2359    case TYPE_DOUBLEN:
2360       params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
2361       break;
2362
2363    case TYPE_INT_4:
2364       params[3] = ((GLint *) p)[3];
2365    case TYPE_INT_3:
2366       params[2] = ((GLint *) p)[2];
2367    case TYPE_INT_2:
2368    case TYPE_ENUM_2:
2369       params[1] = ((GLint *) p)[1];
2370    case TYPE_INT:
2371    case TYPE_ENUM:
2372       params[0] = ((GLint *) p)[0];
2373       break;
2374
2375    case TYPE_INT_N:
2376       for (i = 0; i < v.value_int_n.n; i++)
2377          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2378       break;
2379
2380    case TYPE_INT64:
2381       params[0] = ((GLint64 *) p)[0];
2382       break;
2383
2384    case TYPE_BOOLEAN:
2385       params[0] = ((GLboolean*) p)[0];
2386       break;
2387
2388    case TYPE_MATRIX:
2389       m = *(GLmatrix **) p;
2390       for (i = 0; i < 16; i++)
2391          params[i] = FLOAT_TO_INT64(m->m[i]);
2392       break;
2393
2394    case TYPE_MATRIX_T:
2395       m = *(GLmatrix **) p;
2396       for (i = 0; i < 16; i++)
2397          params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
2398       break;
2399
2400    case TYPE_BIT_0:
2401    case TYPE_BIT_1:
2402    case TYPE_BIT_2:
2403    case TYPE_BIT_3:
2404    case TYPE_BIT_4:
2405    case TYPE_BIT_5:
2406    case TYPE_BIT_6:
2407    case TYPE_BIT_7:
2408       shift = d->type - TYPE_BIT_0;
2409       params[0] = (*(GLbitfield *) p >> shift) & 1;
2410       break;
2411    }
2412 }
2413
2414 void GLAPIENTRY
2415 _mesa_GetDoublev(GLenum pname, GLdouble *params)
2416 {
2417    const struct value_desc *d;
2418    union value v;
2419    GLmatrix *m;
2420    int shift, i;
2421    void *p;
2422    GET_CURRENT_CONTEXT(ctx);
2423
2424    ASSERT_OUTSIDE_BEGIN_END(ctx);
2425
2426    d = find_value("glGetDoublev", pname, &p, &v);
2427    switch (d->type) {
2428    case TYPE_INVALID:
2429       break;
2430    case TYPE_CONST:
2431       params[0] = d->offset;
2432       break;
2433
2434    case TYPE_FLOAT_4:
2435    case TYPE_FLOATN_4:
2436       params[3] = ((GLfloat *) p)[3];
2437    case TYPE_FLOAT_3:
2438    case TYPE_FLOATN_3:
2439       params[2] = ((GLfloat *) p)[2];
2440    case TYPE_FLOAT_2:
2441    case TYPE_FLOATN_2:
2442       params[1] = ((GLfloat *) p)[1];
2443    case TYPE_FLOAT:
2444    case TYPE_FLOATN:
2445       params[0] = ((GLfloat *) p)[0];
2446       break;
2447
2448    case TYPE_DOUBLEN:
2449       params[0] = ((GLdouble *) p)[0];
2450       break;
2451
2452    case TYPE_INT_4:
2453       params[3] = ((GLint *) p)[3];
2454    case TYPE_INT_3:
2455       params[2] = ((GLint *) p)[2];
2456    case TYPE_INT_2:
2457    case TYPE_ENUM_2:
2458       params[1] = ((GLint *) p)[1];
2459    case TYPE_INT:
2460    case TYPE_ENUM:
2461       params[0] = ((GLint *) p)[0];
2462       break;
2463
2464    case TYPE_INT_N:
2465       for (i = 0; i < v.value_int_n.n; i++)
2466          params[i] = v.value_int_n.ints[i];
2467       break;
2468
2469    case TYPE_INT64:
2470       params[0] = ((GLint64 *) p)[0];
2471       break;
2472
2473    case TYPE_BOOLEAN:
2474       params[0] = *(GLboolean*) p;
2475       break;
2476
2477    case TYPE_MATRIX:
2478       m = *(GLmatrix **) p;
2479       for (i = 0; i < 16; i++)
2480          params[i] = m->m[i];
2481       break;
2482
2483    case TYPE_MATRIX_T:
2484       m = *(GLmatrix **) p;
2485       for (i = 0; i < 16; i++)
2486          params[i] = m->m[transpose[i]];
2487       break;
2488
2489    case TYPE_BIT_0:
2490    case TYPE_BIT_1:
2491    case TYPE_BIT_2:
2492    case TYPE_BIT_3:
2493    case TYPE_BIT_4:
2494    case TYPE_BIT_5:
2495    case TYPE_BIT_6:
2496    case TYPE_BIT_7:
2497       shift = d->type - TYPE_BIT_0;
2498       params[0] = (*(GLbitfield *) p >> shift) & 1;
2499       break;
2500    }
2501 }
2502
2503 static enum value_type
2504 find_value_indexed(const char *func, GLenum pname, int index, union value *v)
2505 {
2506    GET_CURRENT_CONTEXT(ctx);
2507
2508    switch (pname) {
2509
2510    case GL_BLEND:
2511       if (index >= ctx->Const.MaxDrawBuffers)
2512          goto invalid_value;
2513       if (!ctx->Extensions.EXT_draw_buffers2)
2514          goto invalid_enum;
2515       v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
2516       return TYPE_INT;
2517
2518    case GL_BLEND_SRC:
2519       /* fall-through */
2520    case GL_BLEND_SRC_RGB:
2521       if (index >= ctx->Const.MaxDrawBuffers)
2522          goto invalid_value;
2523       if (!ctx->Extensions.ARB_draw_buffers_blend)
2524          goto invalid_enum;
2525       v->value_int = ctx->Color.Blend[index].SrcRGB;
2526       return TYPE_INT;
2527    case GL_BLEND_SRC_ALPHA:
2528       if (index >= ctx->Const.MaxDrawBuffers)
2529          goto invalid_value;
2530       if (!ctx->Extensions.ARB_draw_buffers_blend)
2531          goto invalid_enum;
2532       v->value_int = ctx->Color.Blend[index].SrcA;
2533       return TYPE_INT;
2534    case GL_BLEND_DST:
2535       /* fall-through */
2536    case GL_BLEND_DST_RGB:
2537       if (index >= ctx->Const.MaxDrawBuffers)
2538          goto invalid_value;
2539       if (!ctx->Extensions.ARB_draw_buffers_blend)
2540          goto invalid_enum;
2541       v->value_int = ctx->Color.Blend[index].DstRGB;
2542       return TYPE_INT;
2543    case GL_BLEND_DST_ALPHA:
2544       if (index >= ctx->Const.MaxDrawBuffers)
2545          goto invalid_value;
2546       if (!ctx->Extensions.ARB_draw_buffers_blend)
2547          goto invalid_enum;
2548       v->value_int = ctx->Color.Blend[index].DstA;
2549       return TYPE_INT;
2550    case GL_BLEND_EQUATION_RGB:
2551       if (index >= ctx->Const.MaxDrawBuffers)
2552          goto invalid_value;
2553       if (!ctx->Extensions.ARB_draw_buffers_blend)
2554          goto invalid_enum;
2555       v->value_int = ctx->Color.Blend[index].EquationRGB;
2556       return TYPE_INT;
2557    case GL_BLEND_EQUATION_ALPHA:
2558       if (index >= ctx->Const.MaxDrawBuffers)
2559          goto invalid_value;
2560       if (!ctx->Extensions.ARB_draw_buffers_blend)
2561          goto invalid_enum;
2562       v->value_int = ctx->Color.Blend[index].EquationA;
2563       return TYPE_INT;
2564
2565    case GL_COLOR_WRITEMASK:
2566       if (index >= ctx->Const.MaxDrawBuffers)
2567          goto invalid_value;
2568       if (!ctx->Extensions.EXT_draw_buffers2)
2569          goto invalid_enum;
2570       v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
2571       v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
2572       v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
2573       v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
2574       return TYPE_INT_4;
2575
2576    case GL_TRANSFORM_FEEDBACK_BUFFER_START:
2577       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2578          goto invalid_value;
2579       if (!ctx->Extensions.EXT_transform_feedback)
2580          goto invalid_enum;
2581       v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
2582       return TYPE_INT64;
2583
2584    case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
2585       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2586          goto invalid_value;
2587       if (!ctx->Extensions.EXT_transform_feedback)
2588          goto invalid_enum;
2589       v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];
2590       return TYPE_INT64;
2591
2592    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
2593       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2594          goto invalid_value;
2595       if (!ctx->Extensions.EXT_transform_feedback)
2596          goto invalid_enum;
2597       v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
2598       return TYPE_INT;
2599
2600    case GL_UNIFORM_BUFFER_BINDING:
2601       if (index >= ctx->Const.MaxUniformBufferBindings)
2602          goto invalid_value;
2603       if (!ctx->Extensions.ARB_uniform_buffer_object)
2604          goto invalid_enum;
2605       v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
2606       return TYPE_INT;
2607
2608    case GL_UNIFORM_BUFFER_START:
2609       if (index >= ctx->Const.MaxUniformBufferBindings)
2610          goto invalid_value;
2611       if (!ctx->Extensions.ARB_uniform_buffer_object)
2612          goto invalid_enum;
2613       v->value_int = ctx->UniformBufferBindings[index].Offset;
2614       return TYPE_INT;
2615
2616    case GL_UNIFORM_BUFFER_SIZE:
2617       if (index >= ctx->Const.MaxUniformBufferBindings)
2618          goto invalid_value;
2619       if (!ctx->Extensions.ARB_uniform_buffer_object)
2620          goto invalid_enum;
2621       v->value_int = ctx->UniformBufferBindings[index].Size;
2622       return TYPE_INT;
2623    }
2624
2625  invalid_enum:
2626    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
2627                _mesa_lookup_enum_by_nr(pname));
2628    return TYPE_INVALID;
2629  invalid_value:
2630    _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
2631                _mesa_lookup_enum_by_nr(pname));
2632    return TYPE_INVALID;
2633 }
2634
2635 void GLAPIENTRY
2636 _mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
2637 {
2638    union value v;
2639    enum value_type type =
2640       find_value_indexed("glGetBooleanIndexedv", pname, index, &v);
2641
2642    switch (type) {
2643    case TYPE_INT:
2644       params[0] = INT_TO_BOOLEAN(v.value_int);
2645       break;
2646    case TYPE_INT_4:
2647       params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2648       params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2649       params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2650       params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2651       break;
2652    case TYPE_INT64:
2653       params[0] = INT64_TO_BOOLEAN(v.value_int);
2654       break;
2655    default:
2656       ; /* nothing - GL error was recorded */
2657    }
2658 }
2659
2660 void GLAPIENTRY
2661 _mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
2662 {
2663    union value v;
2664    enum value_type type =
2665       find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
2666
2667    switch (type) {
2668    case TYPE_INT:
2669       params[0] = v.value_int;
2670       break;
2671    case TYPE_INT_4:
2672       params[0] = v.value_int_4[0];
2673       params[1] = v.value_int_4[1];
2674       params[2] = v.value_int_4[2];
2675       params[3] = v.value_int_4[3];
2676       break;
2677    case TYPE_INT64:
2678       params[0] = INT64_TO_INT(v.value_int);
2679       break;
2680    default:
2681       ; /* nothing - GL error was recorded */
2682    }
2683 }
2684
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
2710 #if FEATURE_ES1
2711 void GLAPIENTRY
2712 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2713 {
2714    const struct value_desc *d;
2715    union value v;
2716    GLmatrix *m;
2717    int shift, i;
2718    void *p;
2719
2720    d = find_value("glGetDoublev", pname, &p, &v);
2721    switch (d->type) {
2722    case TYPE_INVALID:
2723       break;
2724    case TYPE_CONST:
2725       params[0] = INT_TO_FIXED(d->offset);
2726       break;
2727
2728    case TYPE_FLOAT_4:
2729    case TYPE_FLOATN_4:
2730       params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2731    case TYPE_FLOAT_3:
2732    case TYPE_FLOATN_3:
2733       params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2734    case TYPE_FLOAT_2:
2735    case TYPE_FLOATN_2:
2736       params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2737    case TYPE_FLOAT:
2738    case TYPE_FLOATN:
2739       params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2740       break;
2741
2742    case TYPE_DOUBLEN:
2743       params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2744       break;
2745
2746    case TYPE_INT_4:
2747       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2748    case TYPE_INT_3:
2749       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2750    case TYPE_INT_2:
2751    case TYPE_ENUM_2:
2752       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2753    case TYPE_INT:
2754    case TYPE_ENUM:
2755       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2756       break;
2757
2758    case TYPE_INT_N:
2759       for (i = 0; i < v.value_int_n.n; i++)
2760          params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2761       break;
2762
2763    case TYPE_INT64:
2764       params[0] = ((GLint64 *) p)[0];
2765       break;
2766
2767    case TYPE_BOOLEAN:
2768       params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2769       break;
2770
2771    case TYPE_MATRIX:
2772       m = *(GLmatrix **) p;
2773       for (i = 0; i < 16; i++)
2774          params[i] = FLOAT_TO_FIXED(m->m[i]);
2775       break;
2776
2777    case TYPE_MATRIX_T:
2778       m = *(GLmatrix **) p;
2779       for (i = 0; i < 16; i++)
2780          params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2781       break;
2782
2783    case TYPE_BIT_0:
2784    case TYPE_BIT_1:
2785    case TYPE_BIT_2:
2786    case TYPE_BIT_3:
2787    case TYPE_BIT_4:
2788    case TYPE_BIT_5:
2789    case TYPE_BIT_6:
2790    case TYPE_BIT_7:
2791       shift = d->type - TYPE_BIT_0;
2792       params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2793       break;
2794    }
2795 }
2796 #endif