src/mesa/main/get.c

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