reactos/dll/opengl/mesa/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 "framebuffer.h"
  36
  37 /* This is a table driven implemetation of the glGet*v() functions.
  38  * The basic idea is that most getters just look up an int somewhere
  39  * in struct gl_context and then convert it to a bool or float according to
  40  * which of glGetIntegerv() glGetBooleanv() etc is being called.
  41  * Instead of generating code to do this, we can just record the enum
  42  * value and the offset into struct gl_context in an array of structs.  Then
  43  * in glGet*(), we lookup the struct for the enum in question, and use
  44  * the offset to get the int we need.
  45  *
  46  * Sometimes we need to look up a float, a boolean, a bit in a
  47  * bitfield, a matrix or other types instead, so we need to track the
  48  * type of the value in struct gl_context.  And sometimes the value isn't in
  49  * struct gl_context but in the drawbuffer, the array object, current texture
  50  * unit, or maybe it's a computed value.  So we need to also track
  51  * where or how to find the value.  Finally, we sometimes need to
  52  * check that one of a number of extensions are enabled, the GL
  53  * version or flush or call _mesa_update_state().  This is done by
  54  * attaching optional extra information to the value description
  55  * struct, it's sort of like an array of opcodes that describe extra
  56  * checks or actions.
  57  *
  58  * Putting all this together we end up with struct value_desc below,
  59  * and with a couple of macros to help, the table of struct value_desc
  60  * is about as concise as the specification in the old python script.
  61  */
  62
  63 #undef CONST
  64
  65 #define FLOAT_TO_BOOLEAN(X)   ( (X) ? GL_TRUE : GL_FALSE )
  66 #define FLOAT_TO_FIXED(F)     ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
  67                                 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
  68                                 (GLint) ((F) * 65536.0f) )
  69
  70 #define INT_TO_BOOLEAN(I)     ( (I) ? GL_TRUE : GL_FALSE )
  71 #define INT_TO_FIXED(I)       ( ((I) > SHRT_MAX) ? INT_MAX : \
  72                                 ((I) < SHRT_MIN) ? INT_MIN : \
  73                                 (GLint) ((I) * 65536) )
  74
  75 #define INT64_TO_BOOLEAN(I)   ( (I) ? GL_TRUE : GL_FALSE )
  76 #define INT64_TO_INT(I)       ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
  77
  78 #define BOOLEAN_TO_INT(B)     ( (GLint) (B) )
  79 #define BOOLEAN_TO_INT64(B)   ( (GLint64) (B) )
  80 #define BOOLEAN_TO_FLOAT(B)   ( (B) ? 1.0F : 0.0F )
  81 #define BOOLEAN_TO_FIXED(B)   ( (GLint) ((B) ? 1 : 0) << 16 )
  82
  83 #define ENUM_TO_INT64(E)      ( (GLint64) (E) )
  84 #define ENUM_TO_FIXED(E)      (E)
  85
  86 enum value_type {
  87    TYPE_INVALID,
  88    TYPE_INT,
  89    TYPE_INT_2,
  90    TYPE_INT_3,
  91    TYPE_INT_4,
  92    TYPE_INT_N,
  93    TYPE_INT64,
  94    TYPE_ENUM,
  95    TYPE_ENUM_2,
  96    TYPE_BOOLEAN,
  97    TYPE_BIT_0,
  98    TYPE_BIT_1,
  99    TYPE_BIT_2,
 100    TYPE_BIT_3,
 101    TYPE_BIT_4,
 102    TYPE_BIT_5,
 103    TYPE_BIT_6,
 104    TYPE_BIT_7,
 105    TYPE_FLOAT,
 106    TYPE_FLOAT_2,
 107    TYPE_FLOAT_3,
 108    TYPE_FLOAT_4,
 109    TYPE_FLOATN,
 110    TYPE_FLOATN_2,
 111    TYPE_FLOATN_3,
 112    TYPE_FLOATN_4,
 113    TYPE_DOUBLEN,
 114    TYPE_MATRIX,
 115    TYPE_MATRIX_T,
 116    TYPE_CONST
 117 };
 118
 119 enum value_location {
 120    LOC_BUFFER,
 121    LOC_CONTEXT,
 122    LOC_ARRAY,
 123    LOC_TEXUNIT,
 124    LOC_CUSTOM
 125 };
 126
 127 enum value_extra {
 128    EXTRA_END = 0x8000,
 129    EXTRA_VERSION_30,
 130    EXTRA_VERSION_31,
 131    EXTRA_VERSION_32,
 132    EXTRA_NEW_BUFFERS,
 133    EXTRA_VALID_TEXTURE_UNIT,
 134    EXTRA_VALID_CLIP_DISTANCE,
 135    EXTRA_FLUSH_CURRENT,
 136    EXTRA_GLSL_130,
 137 };
 138
 139 #define NO_EXTRA NULL
 140 #define NO_OFFSET 0
 141
 142 struct value_desc {
 143    GLenum pname;
 144    GLubyte location;  /**< enum value_location */
 145    GLubyte type;      /**< enum value_type */
 146    int offset;
 147    const int *extra;
 148 };
 149
 150 union value {
 151    GLfloat value_float;
 152    GLfloat value_float_4[4];
 153    GLmatrix *value_matrix;
 154    GLint value_int;
 155    GLint value_int_4[4];
 156    GLint64 value_int64;
 157    GLenum value_enum;
 158
 159    /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
 160    struct {
 161       GLint n, ints[100];
 162    } value_int_n;
 163    GLboolean value_bool;
 164 };
 165
 166 #define BUFFER_FIELD(field, type) \
 167    LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
 168 #define CONTEXT_FIELD(field, type) \
 169    LOC_CONTEXT, type, offsetof(struct gl_context, field)
 170 #define ARRAY_FIELD(field, type) \
 171    LOC_ARRAY, type, offsetof(struct gl_array_object, field)
 172 #define CONST(value) \
 173    LOC_CONTEXT, TYPE_CONST, value
 174
 175 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
 176 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
 177 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
 178
 179 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
 180 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
 181 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
 182 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
 183 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
 184 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
 185 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
 186 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
 187 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
 188 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
 189 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
 190 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
 191 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
 192 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
 193 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
 194 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
 195 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
 196 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
 197 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
 198 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
 199
 200 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
 201 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
 202 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
 203
 204 #define EXT(f)                                  \
 205    offsetof(struct gl_extensions, f)
 206
 207 #define EXTRA_EXT(e)                            \
 208    static const int extra_##e[] = {             \
 209       EXT(e), EXTRA_END                         \
 210    }
 211
 212 #define EXTRA_EXT2(e1, e2)                      \
 213    static const int extra_##e1##_##e2[] = {     \
 214       EXT(e1), EXT(e2), EXTRA_END               \
 215    }
 216
 217 /* The 'extra' mechanism is a way to specify extra checks (such as
 218  * extensions or specific gl versions) or actions (flush current, new
 219  * buffers) that we need to do before looking up an enum.  We need to
 220  * declare them all up front so we can refer to them in the value_desc
 221  * structs below. */
 222
 223 static const int extra_new_buffers[] = {
 224    EXTRA_NEW_BUFFERS,
 225    EXTRA_END
 226 };
 227
 228 static const int extra_valid_texture_unit[] = {
 229    EXTRA_VALID_TEXTURE_UNIT,
 230    EXTRA_END
 231 };
 232
 233 static const int extra_valid_clip_distance[] = {
 234    EXTRA_VALID_CLIP_DISTANCE,
 235    EXTRA_END
 236 };
 237
 238 static const int extra_flush_current_valid_texture_unit[] = {
 239    EXTRA_FLUSH_CURRENT,
 240    EXTRA_VALID_TEXTURE_UNIT,
 241    EXTRA_END
 242 };
 243
 244 static const int extra_flush_current[] = {
 245    EXTRA_FLUSH_CURRENT,
 246    EXTRA_END
 247 };
 248
 249 static const int extra_EXT_secondary_color_flush_current[] = {
 250    EXT(EXT_secondary_color),
 251    EXTRA_FLUSH_CURRENT,
 252    EXTRA_END
 253 };
 254
 255 static const int extra_EXT_fog_coord_flush_current[] = {
 256    EXT(EXT_fog_coord),
 257    EXTRA_FLUSH_CURRENT,
 258    EXTRA_END
 259 };
 260
 261 static const int extra_EXT_texture_integer[] = {
 262    EXT(EXT_texture_integer),
 263    EXTRA_END
 264 };
 265
 266 static const int extra_GLSL_130[] = {
 267    EXTRA_GLSL_130,
 268    EXTRA_END
 269 };
 270
 271
 272 EXTRA_EXT(ARB_texture_cube_map);
 273 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
 274 EXTRA_EXT(EXT_secondary_color);
 275 EXTRA_EXT(EXT_fog_coord);
 276 EXTRA_EXT(NV_fog_distance);
 277 EXTRA_EXT(EXT_texture_filter_anisotropic);
 278 EXTRA_EXT(IBM_rasterpos_clip);
 279 EXTRA_EXT(NV_point_sprite);
 280 EXTRA_EXT(NV_vertex_program);
 281 EXTRA_EXT(NV_fragment_program);
 282 EXTRA_EXT(EXT_stencil_two_side);
 283 EXTRA_EXT(NV_light_max_exponent);
 284 EXTRA_EXT(EXT_depth_bounds_test);
 285 EXTRA_EXT(ARB_shader_objects);
 286 EXTRA_EXT(ARB_fragment_shader);
 287 EXTRA_EXT(ARB_fragment_program);
 288 EXTRA_EXT(APPLE_vertex_array_object);
 289 EXTRA_EXT(EXT_compiled_vertex_array);
 290 EXTRA_EXT(ARB_vertex_shader);
 291 EXTRA_EXT(EXT_pixel_buffer_object);
 292 EXTRA_EXT(ARB_vertex_program);
 293 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
 294 EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);
 295 EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);
 296 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
 297
 298 static const int
 299 extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 300    EXT(ARB_vertex_program),
 301    EXT(ARB_fragment_program),
 302    EXT(NV_vertex_program),
 303    EXTRA_END
 304 };
 305
 306 static const int
 307 extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 308    EXT(NV_vertex_program),
 309    EXT(ARB_vertex_program),
 310    EXT(ARB_fragment_program),
 311    EXT(NV_vertex_program),
 312    EXTRA_END
 313 };
 314
 315 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
 316 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
 317 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
 318
 319 #define API_OPENGL_BIT (1 << API_OPENGL)
 320
 321 /* This is the big table describing all the enums we accept in
 322  * glGet*v().  The table is partitioned into six parts: enums
 323  * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
 324  * between OpenGL and GLES, enums exclusive to GLES, etc for the
 325  * remaining combinations.  When we add the enums to the hash table in
 326  * _mesa_init_get_hash(), we only add the enums for the API we're
 327  * instantiating and the different sections are guarded by #if
 328  * FEATURE_GL etc to make sure we only compile in the enums we may
 329  * need. */
 330
 331 static const struct value_desc values[] = {
 332    { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },
 333    { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled), NO_EXTRA },
 334    { GL_BLEND_SRC, CONTEXT_ENUM(Color.SrcRGB), NO_EXTRA },
 335    { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },
 336    { GL_COLOR_CLEAR_VALUE, LOC_CUSTOM, TYPE_FLOATN_4, 0, NO_EXTRA },
 337    { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 338    { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag), NO_EXTRA },
 339    { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode), NO_EXTRA },
 340    { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits), NO_EXTRA },
 341    { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN), NO_EXTRA },
 342    { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func), NO_EXTRA },
 343    { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2), NO_EXTRA },
 344    { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test), NO_EXTRA },
 345    { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask), NO_EXTRA },
 346    { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag), NO_EXTRA },
 347    { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace), NO_EXTRA },
 348    { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },
 349    { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width), NO_EXTRA },
 350    { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth), NO_EXTRA },
 351    { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 352    { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 353    { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 354      offsetof(struct gl_context, Const.MaxTextureLevels), NO_EXTRA },
 355    { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth), NO_EXTRA },
 356    { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment), NO_EXTRA },
 357    { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize), NO_EXTRA },
 358    { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ), NO_EXTRA },
 359    { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ), NO_EXTRA },
 360    { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill), NO_EXTRA },
 361    { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },
 362    { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 363    { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled), NO_EXTRA },
 364    { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits), NO_EXTRA },
 365    { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear), NO_EXTRA },
 366    { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 367    { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 368    { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 369    { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 370    { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 371    { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled), NO_EXTRA },
 372    { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 373    { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 374    { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits), NO_EXTRA },
 375    { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX, NO_EXTRA },
 376    { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment), NO_EXTRA },
 377    { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 378
 379    /* GL_ARB_multitexture */
 380    { GL_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 381
 382    /* Note that all the OES_* extensions require that the Mesa "struct
 383     * gl_extensions" include a member with the name of the extension.
 384     * That structure does not yet include OES extensions (and we're
 385     * not sure whether it will).  If it does, all the OES_*
 386     * extensions below should mark the dependency. */
 387
 388    /* GL_ARB_texture_cube_map */
 389    { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,
 390      TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },
 391    { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,
 392      offsetof(struct gl_context, Const.MaxCubeTextureLevels),
 393      extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */
 394
 395    /* XXX: OES_blend_subtract */
 396    { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.SrcRGB), NO_EXTRA },
 397    { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.DstRGB), NO_EXTRA },
 398    { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.SrcA), NO_EXTRA },
 399    { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.DstA), NO_EXTRA },
 400
 401    /* GL_BLEND_EQUATION_RGB, which is what we're really after, is
 402     * defined identically to GL_BLEND_EQUATION. */
 403    { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.EquationRGB), NO_EXTRA },
 404    { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.EquationA), NO_EXTRA },
 405
 406    /* GL_ARB_texture_compression */
 407    { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 408    { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0, NO_EXTRA },
 409
 410    /* GL_ARB_multisample */
 411    { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,
 412      CONTEXT_BOOL(Multisample.SampleAlphaToCoverage), NO_EXTRA },
 413    { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage), NO_EXTRA },
 414    { GL_SAMPLE_COVERAGE_VALUE_ARB,
 415      CONTEXT_FLOAT(Multisample.SampleCoverageValue), NO_EXTRA },
 416    { GL_SAMPLE_COVERAGE_INVERT_ARB,
 417      CONTEXT_BOOL(Multisample.SampleCoverageInvert), NO_EXTRA },
 418
 419    /* GL_ARB_vertex_buffer_object */
 420    { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 421
 422    /* GL_ARB_vertex_buffer_object */
 423    /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */
 424    { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 425
 426    /* GL_OES_read_format */
 427    { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,
 428      extra_new_buffers },
 429    { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,
 430      extra_new_buffers },
 431
 432    /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's
 433     * GLSL: */
 434    { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes), NO_EXTRA },
 435
 436    { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights), NO_EXTRA },
 437    { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled), NO_EXTRA },
 438    { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled), NO_EXTRA },
 439    { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled), NO_EXTRA },
 440    { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled), NO_EXTRA },
 441    { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled), NO_EXTRA },
 442    { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled), NO_EXTRA },
 443    { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled), NO_EXTRA },
 444    { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled), NO_EXTRA },
 445    { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled), NO_EXTRA },
 446    { GL_LIGHT_MODEL_AMBIENT,
 447      CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4), NO_EXTRA },
 448    { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide), NO_EXTRA },
 449    { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled), NO_EXTRA },
 450    { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc), NO_EXTRA },
 451    { GL_ALPHA_TEST_REF, LOC_CUSTOM, TYPE_FLOATN, 0, NO_EXTRA },
 452    { GL_BLEND_DST, CONTEXT_ENUM(Color.DstRGB), NO_EXTRA },
 453    { GL_CLIP_DISTANCE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 454    { GL_CLIP_DISTANCE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 455    { GL_CLIP_DISTANCE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 456    { GL_CLIP_DISTANCE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 457    { GL_CLIP_DISTANCE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 458    { GL_CLIP_DISTANCE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 459    { GL_CLIP_DISTANCE6, CONTEXT_BIT6(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 460    { GL_CLIP_DISTANCE7, CONTEXT_BIT7(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 461    { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled), NO_EXTRA },
 462    { GL_CURRENT_COLOR,
 463      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),
 464      extra_flush_current },
 465    { GL_CURRENT_NORMAL,
 466      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),
 467      extra_flush_current },
 468    { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 469      extra_flush_current_valid_texture_unit },
 470    { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]), NO_EXTRA },
 471    { GL_FOG, CONTEXT_BOOL(Fog.Enabled), NO_EXTRA },
 472    { GL_FOG_COLOR, LOC_CUSTOM, TYPE_FLOATN_4, 0, NO_EXTRA },
 473    { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density), NO_EXTRA },
 474    { GL_FOG_END, CONTEXT_FLOAT(Fog.End), NO_EXTRA },
 475    { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog), NO_EXTRA },
 476    { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode), NO_EXTRA },
 477    { GL_FOG_START, CONTEXT_FLOAT(Fog.Start), NO_EXTRA },
 478    { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag), NO_EXTRA },
 479    { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth), NO_EXTRA },
 480    { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA), NO_EXTRA },
 481    { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled), NO_EXTRA },
 482    { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp), NO_EXTRA },
 483    { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode), NO_EXTRA },
 484    { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH), NO_EXTRA },
 485    { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH), NO_EXTRA },
 486    { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), NO_EXTRA },
 487    { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top), NO_EXTRA },
 488    { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 489      offsetof(struct gl_context, ModelviewMatrixStack.Depth), NO_EXTRA },
 490    { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize), NO_EXTRA },
 491    { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages), NO_EXTRA },
 492    { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection), NO_EXTRA },
 493    { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size), NO_EXTRA },
 494    { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA), NO_EXTRA },
 495    { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag), NO_EXTRA },
 496    { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth), NO_EXTRA },
 497    { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize), NO_EXTRA },
 498    { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize), NO_EXTRA },
 499    { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold), NO_EXTRA },
 500    { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top), NO_EXTRA },
 501    { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 502      offsetof(struct gl_context, ProjectionMatrixStack.Depth), NO_EXTRA },
 503    { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals), NO_EXTRA },
 504    { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel), NO_EXTRA },
 505    { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 506    { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },
 507    { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,
 508      extra_valid_texture_unit  },
 509
 510    { GL_VERTEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_POS].Enabled), NO_EXTRA },
 511    { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Size), NO_EXTRA },
 512    { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_POS].Type), NO_EXTRA },
 513    { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Stride), NO_EXTRA },
 514    { GL_NORMAL_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_NORMAL].Enabled), NO_EXTRA },
 515    { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_NORMAL].Type), NO_EXTRA },
 516    { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_NORMAL].Stride), NO_EXTRA },
 517    { GL_COLOR_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR0].Enabled), NO_EXTRA },
 518    { GL_COLOR_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Size), NO_EXTRA },
 519    { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR0].Type), NO_EXTRA },
 520    { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Stride), NO_EXTRA },
 521    { GL_TEXTURE_COORD_ARRAY,
 522      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled), NO_EXTRA },
 523    { GL_TEXTURE_COORD_ARRAY_SIZE,
 524      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Size), NO_EXTRA },
 525    { GL_TEXTURE_COORD_ARRAY_TYPE,
 526      LOC_CUSTOM, TYPE_ENUM, offsetof(struct gl_client_array, Type), NO_EXTRA },
 527    { GL_TEXTURE_COORD_ARRAY_STRIDE,
 528      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Stride), NO_EXTRA },
 529
 530    /* GL_ARB_multitexture */
 531    { GL_MAX_TEXTURE_UNITS, CONTEXT_INT(Const.MaxTextureUnits), NO_EXTRA },
 532    { GL_CLIENT_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 533
 534    /* GL_ARB_texture_cube_map */
 535    { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 536    /* S, T, and R are always set at the same time */
 537    { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,
 538      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 539
 540    /* GL_ARB_multisample */
 541    { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled), NO_EXTRA },
 542    { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne), NO_EXTRA },
 543
 544    /* GL_ARB_vertex_buffer_object */
 545    { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 546      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_POS].BufferObj), NO_EXTRA },
 547    { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 548      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_NORMAL].BufferObj), NO_EXTRA },
 549    { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 550      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR0].BufferObj), NO_EXTRA },
 551    { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 552
 553    /* GL_OES_point_sprite */
 554    { GL_POINT_SPRITE_NV,
 555      CONTEXT_BOOL(Point.PointSprite),
 556      extra_NV_point_sprite_ARB_point_sprite },
 557
 558    /* GL_ARB_fragment_shader */
 559    { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,
 560      CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),
 561      extra_ARB_fragment_shader },
 562
 563    /* GL_ARB_vertex_shader */
 564    { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,
 565      CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),
 566      extra_ARB_vertex_shader },
 567    { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,
 568      extra_ARB_vertex_shader },
 569
 570    /* GL_EXT_texture_filter_anisotropic */
 571    { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
 572      CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),
 573      extra_EXT_texture_filter_anisotropic },
 574
 575    { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */
 576      CONTEXT_INT(Const.MaxTextureCoordUnits),
 577      extra_ARB_fragment_program_NV_fragment_program },
 578
 579    { GL_BLEND_COLOR_EXT, LOC_CUSTOM, TYPE_FLOATN_4, 0, NO_EXTRA },
 580    /* GL_ARB_fragment_program */
 581    { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */
 582      CONTEXT_INT(Const.MaxTextureImageUnits),
 583      extra_ARB_fragment_program_NV_fragment_program },
 584    { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,
 585      CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },
 586    { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,
 587      CONTEXT_INT(Const.MaxCombinedTextureImageUnits),
 588      extra_ARB_vertex_shader },
 589
 590    /* GL_ARB_shader_objects
 591     * Actually, this token isn't part of GL_ARB_shader_objects, but is
 592     * close enough for now. */
 593    { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },
 594
 595    /* OpenGL 2.0 */
 596    { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]), NO_EXTRA },
 597    { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]), NO_EXTRA },
 598    { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]), NO_EXTRA },
 599    { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]), NO_EXTRA },
 600    { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]), NO_EXTRA },
 601    { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]), NO_EXTRA },
 602    { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]), NO_EXTRA },
 603
 604    /* OES_texture_3D */
 605    { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX, NO_EXTRA },
 606    { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 607      offsetof(struct gl_context, Const.Max3DTextureLevels), NO_EXTRA },
 608
 609    /* GL_ARB_fragment_program/OES_standard_derivatives */
 610    { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,
 611      CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },
 612
 613    { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },
 614    { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },
 615    { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },
 616    { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },
 617    { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
 618    { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },
 619    { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },
 620    { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },
 621    { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },
 622    { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },
 623    { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },
 624    { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },
 625    { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },
 626    { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },
 627    { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },
 628    { GL_CURRENT_INDEX,
 629      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
 630      extra_flush_current },
 631    { GL_CURRENT_RASTER_COLOR,
 632      CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },
 633    { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },
 634    { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },
 635    { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },
 636    { GL_CURRENT_RASTER_SECONDARY_COLOR,
 637      CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },
 638    { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 639      extra_valid_texture_unit },
 640    { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },
 641    { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },
 642    { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },
 643    { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },
 644    { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer), NO_EXTRA },
 645    { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 646    { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },
 647    { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },
 648    { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },
 649    { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },
 650    { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },
 651    { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
 652    { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },
 653    { GL_INDEX_MODE, CONST(0) , NO_EXTRA},
 654    { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },
 655    { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },
 656    { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },
 657    { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },
 658    { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },
 659    { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },
 660    { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 661    { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },
 662    { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },
 663    { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },
 664    { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 665    { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },
 666    { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },
 667    { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },
 668    { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },
 669    { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },
 670    { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },
 671    { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },
 672    { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },
 673    { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },
 674    { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },
 675    { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },
 676    { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },
 677    { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },
 678    { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },
 679    { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },
 680    { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },
 681    { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },
 682    { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },
 683    { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },
 684    { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },
 685    { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },
 686    { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },
 687    { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },
 688    { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },
 689    { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },
 690    { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },
 691    { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },
 692    { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },
 693
 694    { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },
 695    { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },
 696    { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },
 697    { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },
 698    { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },
 699    { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },
 700    { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength), NO_EXTRA },
 701    { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels), NO_EXTRA },
 702    { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows), NO_EXTRA },
 703    { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },
 704    { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight), NO_EXTRA },
 705    { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },
 706    { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },
 707    { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },
 708    { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },
 709    { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },
 710    { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },
 711    { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },
 712    { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },
 713    { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },
 714    { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },
 715    { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },
 716    { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },
 717    { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },
 718    { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },
 719    { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },
 720    { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },
 721    { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },
 722    { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },
 723    { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },
 724    { GL_READ_BUFFER, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 725    { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },
 726    { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },
 727    { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },
 728    { GL_RGBA_MODE, CONST(1), NO_EXTRA },
 729    { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },
 730
 731    { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },
 732
 733    { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 734    { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 735
 736    { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },
 737
 738    { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
 739      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 740    { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
 741      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 742    { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
 743      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 744    { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
 745      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 746    { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },
 747    { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength), NO_EXTRA },
 748    { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels), NO_EXTRA },
 749    { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows), NO_EXTRA },
 750    { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },
 751    { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages), NO_EXTRA },
 752    { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight), NO_EXTRA },
 753    { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },
 754    { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },
 755
 756    /* Vertex arrays */
 757    { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 758    { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 759    { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 760    { GL_INDEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled), NO_EXTRA },
 761    { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Type), NO_EXTRA },
 762    { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Stride), NO_EXTRA },
 763    { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 764    { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 765    { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled), NO_EXTRA },
 766    { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Stride), NO_EXTRA },
 767    { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 768
 769    /* GL_EXT_compiled_vertex_array */
 770    { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
 771      extra_EXT_compiled_vertex_array },
 772    { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
 773      extra_EXT_compiled_vertex_array },
 774
 775    /* GL_ARB_transpose_matrix */
 776    { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
 777      CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },
 778    { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
 779      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
 780    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
 781
 782    /* GL_EXT_secondary_color */
 783    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
 784      extra_EXT_secondary_color_ARB_vertex_program },
 785    { GL_CURRENT_SECONDARY_COLOR_EXT,
 786      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
 787      extra_EXT_secondary_color_flush_current },
 788    { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR1].Enabled),
 789      extra_EXT_secondary_color },
 790    { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR1].Type),
 791      extra_EXT_secondary_color },
 792    { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Stride),
 793      extra_EXT_secondary_color },
 794    { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Size),
 795      extra_EXT_secondary_color },
 796
 797    /* GL_EXT_fog_coord */
 798    { GL_CURRENT_FOG_COORDINATE_EXT,
 799      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
 800      extra_EXT_fog_coord_flush_current },
 801    { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_FOG].Enabled),
 802      extra_EXT_fog_coord },
 803    { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_FOG].Type),
 804      extra_EXT_fog_coord },
 805    { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_FOG].Stride),
 806      extra_EXT_fog_coord },
 807    { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
 808      extra_EXT_fog_coord },
 809
 810    /* GL_NV_fog_distance */
 811    { GL_FOG_DISTANCE_MODE_NV, CONTEXT_ENUM(Fog.FogDistanceMode),
 812      extra_NV_fog_distance },
 813
 814    /* GL_IBM_rasterpos_clip */
 815    { GL_RASTER_POSITION_UNCLIPPED_IBM,
 816      CONTEXT_BOOL(Transform.RasterPositionUnclipped),
 817      extra_IBM_rasterpos_clip },
 818
 819    /* GL_NV_point_sprite */
 820    { GL_POINT_SPRITE_R_MODE_NV,
 821      CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
 822    { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
 823      extra_NV_point_sprite_ARB_point_sprite },
 824
 825    /* GL_NV_vertex_program */
 826    { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
 827      extra_NV_vertex_program },
 828    { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(0)].Enabled),
 829      extra_NV_vertex_program },
 830    { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(1)].Enabled),
 831      extra_NV_vertex_program },
 832    { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(2)].Enabled),
 833      extra_NV_vertex_program },
 834    { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(3)].Enabled),
 835      extra_NV_vertex_program },
 836    { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(4)].Enabled),
 837      extra_NV_vertex_program },
 838    { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(5)].Enabled),
 839      extra_NV_vertex_program },
 840    { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(6)].Enabled),
 841      extra_NV_vertex_program },
 842    { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(7)].Enabled),
 843      extra_NV_vertex_program },
 844    { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(8)].Enabled),
 845      extra_NV_vertex_program },
 846    { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(9)].Enabled),
 847      extra_NV_vertex_program },
 848    { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(10)].Enabled),
 849      extra_NV_vertex_program },
 850    { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(11)].Enabled),
 851      extra_NV_vertex_program },
 852    { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(12)].Enabled),
 853      extra_NV_vertex_program },
 854    { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(13)].Enabled),
 855      extra_NV_vertex_program },
 856    { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(14)].Enabled),
 857      extra_NV_vertex_program },
 858    { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(15)].Enabled),
 859      extra_NV_vertex_program },
 860    { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
 861      extra_NV_vertex_program },
 862    { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
 863      extra_NV_vertex_program },
 864    { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
 865      extra_NV_vertex_program },
 866    { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
 867      extra_NV_vertex_program },
 868    { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
 869      extra_NV_vertex_program },
 870    { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
 871      extra_NV_vertex_program },
 872    { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
 873      extra_NV_vertex_program },
 874    { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
 875      extra_NV_vertex_program },
 876    { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
 877      extra_NV_vertex_program },
 878    { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
 879      extra_NV_vertex_program },
 880    { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
 881      extra_NV_vertex_program },
 882    { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
 883      extra_NV_vertex_program },
 884    { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
 885      extra_NV_vertex_program },
 886    { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
 887      extra_NV_vertex_program },
 888    { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
 889      extra_NV_vertex_program },
 890    { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
 891      extra_NV_vertex_program },
 892
 893    /* GL_NV_fragment_program */
 894    { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
 895      extra_NV_fragment_program },
 896    { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
 897      extra_NV_fragment_program },
 898    { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
 899      CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
 900      extra_NV_fragment_program },
 901
 902    /* GL_EXT_stencil_two_side */
 903    { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
 904          extra_EXT_stencil_two_side },
 905    { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 906
 907    /* GL_NV_light_max_exponent */
 908    { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
 909      extra_NV_light_max_exponent },
 910    { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
 911      extra_NV_light_max_exponent },
 912
 913    /* GL_ARB_vertex_buffer_object */
 914    { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 915      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR_INDEX].BufferObj), NO_EXTRA },
 916    { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 917      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_EDGEFLAG].BufferObj), NO_EXTRA },
 918    { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 919      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR1].BufferObj), NO_EXTRA },
 920    { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 921      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_FOG].BufferObj), NO_EXTRA },
 922
 923    /* GL_EXT_pixel_buffer_object */
 924    { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
 925      extra_EXT_pixel_buffer_object },
 926    { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
 927      extra_EXT_pixel_buffer_object },
 928
 929    /* GL_ARB_vertex_program */
 930    { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
 931      CONTEXT_BOOL(VertexProgram.Enabled),
 932      extra_ARB_vertex_program_NV_vertex_program },
 933    { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
 934      CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
 935      extra_ARB_vertex_program_NV_vertex_program },
 936    { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
 937      CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
 938      extra_ARB_vertex_program_NV_vertex_program },
 939    { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
 940      CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
 941      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
 942    { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
 943      CONTEXT_INT(Const.MaxProgramMatrices),
 944      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
 945    { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
 946      LOC_CUSTOM, TYPE_INT, 0,
 947      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
 948
 949    { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
 950      LOC_CUSTOM, TYPE_MATRIX, 0,
 951      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
 952    { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
 953      LOC_CUSTOM, TYPE_MATRIX, 0,
 954      extra_ARB_vertex_program_ARB_fragment_program },
 955
 956    { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
 957      CONTEXT_INT(Program.ErrorPos),
 958      extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
 959
 960    /* GL_ARB_fragment_program */
 961    { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
 962      extra_ARB_fragment_program },
 963
 964    /* GL_EXT_depth_bounds_test */
 965    { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
 966      extra_EXT_depth_bounds_test },
 967    { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
 968      extra_EXT_depth_bounds_test },
 969
 970    /* GL_APPLE_vertex_array_object */
 971    { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),
 972      extra_APPLE_vertex_array_object },
 973
 974    /* GL_EXT_texture_integer */
 975    { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),
 976      extra_EXT_texture_integer },
 977
 978    /* GL_EXT_gpu_shader4 / GLSL 1.30 */
 979    { GL_MIN_PROGRAM_TEXEL_OFFSET,
 980      CONTEXT_INT(Const.MinProgramTexelOffset),
 981      extra_GLSL_130 },
 982    { GL_MAX_PROGRAM_TEXEL_OFFSET,
 983      CONTEXT_INT(Const.MaxProgramTexelOffset),
 984      extra_GLSL_130 },
 985
 986    /* GL 3.0 */
 987    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
 988    { GL_MAJOR_VERSION, CONTEXT_INT(VersionMajor), extra_version_30 },
 989    { GL_MINOR_VERSION, CONTEXT_INT(VersionMinor), extra_version_30  },
 990    { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
 991
 992
 993    /* GL 3.2 */
 994    { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
 995      extra_version_32 },
 996
 997    /* GL_ARB_robustness */
 998    { GL_RESET_NOTIFICATION_STRATEGY_ARB, CONTEXT_ENUM(Const.ResetStrategy), NO_EXTRA },
 999 };
1000
1001 /* All we need now is a way to look up the value struct from the enum.
1002  * The code generated by gcc for the old generated big switch
1003  * statement is a big, balanced, open coded if/else tree, essentially
1004  * an unrolled binary search.  It would be natural to sort the new
1005  * enum table and use bsearch(), but we will use a read-only hash
1006  * table instead.  bsearch() has a nice guaranteed worst case
1007  * performance, but we're also guaranteed to hit that worst case
1008  * (log2(n) iterations) for about half the enums.  Instead, using an
1009  * open addressing hash table, we can find the enum on the first try
1010  * for 80% of the enums, 1 collision for 10% and never more than 5
1011  * collisions for any enum (typical numbers).  And the code is very
1012  * simple, even though it feels a little magic. */
1013
1014 static unsigned short table[1024];
1015 static const int prime_factor = 89, prime_step = 281;
1016
1017 #ifdef GET_DEBUG
1018 static void
1019 print_table_stats(void)
1020 {
1021    int i, j, collisions[11], count, hash, mask;
1022    const struct value_desc *d;
1023
1024    count = 0;
1025    mask = Elements(table) - 1;
1026    memset(collisions, 0, sizeof collisions);
1027
1028    for (i = 0; i < Elements(table); i++) {
1029       if (!table[i])
1030          continue;
1031       count++;
1032       d = &values[table[i]];
1033       hash = (d->pname * prime_factor);
1034       j = 0;
1035       while (1) {
1036          if (values[table[hash & mask]].pname == d->pname)
1037             break;
1038          hash += prime_step;
1039          j++;
1040       }
1041
1042       if (j < 10)
1043          collisions[j]++;
1044       else
1045          collisions[10]++;
1046    }
1047
1048    printf("number of enums: %d (total %d)\n", count, Elements(values));
1049    for (i = 0; i < Elements(collisions) - 1; i++)
1050       if (collisions[i] > 0)
1051          printf("  %d enums with %d %scollisions\n",
1052                 collisions[i], i, i == 10 ? "or more " : "");
1053 }
1054 #endif
1055
1056 /**
1057  * Initialize the enum hash for a given API
1058  *
1059  * This is called from one_time_init() to insert the enum values that
1060  * are valid for the API in question into the enum hash table.
1061  *
1062  * \param the current context, for determining the API in question
1063  */
1064 void _mesa_init_get_hash(struct gl_context *ctx)
1065 {
1066    int i, hash, index, mask;
1067
1068    mask = Elements(table) - 1;
1069
1070    for (i = 0; i < Elements(values); i++) {
1071
1072       hash = (values[i].pname * prime_factor) & mask;
1073       while (1) {
1074          index = hash & mask;
1075          if (!table[index]) {
1076             table[index] = i;
1077             break;
1078          }
1079          hash += prime_step;
1080       }
1081    }
1082
1083 #ifdef GET_DEBUG
1084    print_table_stats();
1085 #endif
1086 }
1087
1088 /**
1089  * Handle irregular enums
1090  *
1091  * Some values don't conform to the "well-known type at context
1092  * pointer + offset" pattern, so we have this function to catch all
1093  * the corner cases.  Typically, it's a computed value or a one-off
1094  * pointer to a custom struct or something.
1095  *
1096  * In this case we can't return a pointer to the value, so we'll have
1097  * to use the temporary variable 'v' declared back in the calling
1098  * glGet*v() function to store the result.
1099  *
1100  * \param ctx the current context
1101  * \param d the struct value_desc that describes the enum
1102  * \param v pointer to the tmp declared in the calling glGet*v() function
1103  */
1104 static void
1105 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
1106 {
1107    struct gl_buffer_object **buffer_obj;
1108    struct gl_client_array *array;
1109    GLuint unit, *p;
1110
1111    switch (d->pname) {
1112    case GL_TEXTURE_1D:
1113    case GL_TEXTURE_2D:
1114    case GL_TEXTURE_3D:
1115    case GL_TEXTURE_CUBE_MAP_ARB:
1116       v->value_bool = _mesa_IsEnabled(d->pname);
1117       break;
1118
1119    case GL_LINE_STIPPLE_PATTERN:
1120       /* This is the only GLushort, special case it here by promoting
1121        * to an int rather than introducing a new type. */
1122       v->value_int = ctx->Line.StipplePattern;
1123       break;
1124
1125    case GL_CURRENT_RASTER_TEXTURE_COORDS:
1126       unit = ctx->Texture.CurrentUnit;
1127       v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
1128       v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
1129       v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
1130       v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
1131       break;
1132
1133    case GL_CURRENT_TEXTURE_COORDS:
1134       unit = ctx->Texture.CurrentUnit;
1135       v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
1136       v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
1137       v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
1138       v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
1139       break;
1140
1141    case GL_COLOR_WRITEMASK:
1142       v->value_int_4[0] = ctx->Color.ColorMask[RCOMP] ? 1 : 0;
1143       v->value_int_4[1] = ctx->Color.ColorMask[GCOMP] ? 1 : 0;
1144       v->value_int_4[2] = ctx->Color.ColorMask[BCOMP] ? 1 : 0;
1145       v->value_int_4[3] = ctx->Color.ColorMask[ACOMP] ? 1 : 0;
1146       break;
1147
1148    case GL_EDGE_FLAG:
1149       v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
1150       break;
1151
1152    case GL_READ_BUFFER:
1153       v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
1154       break;
1155
1156    case GL_MAP2_GRID_DOMAIN:
1157       v->value_float_4[0] = ctx->Eval.MapGrid2u1;
1158       v->value_float_4[1] = ctx->Eval.MapGrid2u2;
1159       v->value_float_4[2] = ctx->Eval.MapGrid2v1;
1160       v->value_float_4[3] = ctx->Eval.MapGrid2v2;
1161       break;
1162
1163    case GL_TEXTURE_STACK_DEPTH:
1164       unit = ctx->Texture.CurrentUnit;
1165       v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
1166       break;
1167    case GL_TEXTURE_MATRIX:
1168       unit = ctx->Texture.CurrentUnit;
1169       v->value_matrix = ctx->TextureMatrixStack[unit].Top;
1170       break;
1171
1172    case GL_TEXTURE_COORD_ARRAY:
1173    case GL_TEXTURE_COORD_ARRAY_SIZE:
1174    case GL_TEXTURE_COORD_ARRAY_TYPE:
1175    case GL_TEXTURE_COORD_ARRAY_STRIDE:
1176       array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
1177       v->value_int = *(GLuint *) ((char *) array + d->offset);
1178       break;
1179
1180    case GL_ACTIVE_TEXTURE_ARB:
1181       v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
1182       break;
1183    case GL_CLIENT_ACTIVE_TEXTURE_ARB:
1184       v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
1185       break;
1186
1187    case GL_MODELVIEW_STACK_DEPTH:
1188    case GL_PROJECTION_STACK_DEPTH:
1189       v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
1190       break;
1191
1192    case GL_MAX_TEXTURE_SIZE:
1193    case GL_MAX_3D_TEXTURE_SIZE:
1194    case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
1195       p = (GLuint *) ((char *) ctx + d->offset);
1196       v->value_int = 1 << (*p - 1);
1197       break;
1198
1199    case GL_SCISSOR_BOX:
1200       v->value_int_4[0] = ctx->Scissor.X;
1201       v->value_int_4[1] = ctx->Scissor.Y;
1202       v->value_int_4[2] = ctx->Scissor.Width;
1203       v->value_int_4[3] = ctx->Scissor.Height;
1204       break;
1205
1206    case GL_LIST_INDEX:
1207       v->value_int =
1208          ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
1209       break;
1210    case GL_LIST_MODE:
1211       if (!ctx->CompileFlag)
1212          v->value_enum = 0;
1213       else if (ctx->ExecuteFlag)
1214          v->value_enum = GL_COMPILE_AND_EXECUTE;
1215       else
1216          v->value_enum = GL_COMPILE;
1217       break;
1218
1219    case GL_VIEWPORT:
1220       v->value_int_4[0] = ctx->Viewport.X;
1221       v->value_int_4[1] = ctx->Viewport.Y;
1222       v->value_int_4[2] = ctx->Viewport.Width;
1223       v->value_int_4[3] = ctx->Viewport.Height;
1224       break;
1225
1226    case GL_ACTIVE_STENCIL_FACE_EXT:
1227       v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
1228       break;
1229
1230    case GL_STENCIL_FAIL:
1231       v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
1232       break;
1233    case GL_STENCIL_FUNC:
1234       v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
1235       break;
1236    case GL_STENCIL_PASS_DEPTH_FAIL:
1237       v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
1238       break;
1239    case GL_STENCIL_PASS_DEPTH_PASS:
1240       v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
1241       break;
1242    case GL_STENCIL_REF:
1243       v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
1244       break;
1245    case GL_STENCIL_VALUE_MASK:
1246       v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
1247       break;
1248    case GL_STENCIL_WRITEMASK:
1249       v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
1250       break;
1251
1252    case GL_NUM_EXTENSIONS:
1253       v->value_int = _mesa_get_extension_count(ctx);
1254       break;
1255
1256    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
1257       v->value_int = _mesa_get_color_read_type(ctx);
1258       break;
1259    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
1260       v->value_int = _mesa_get_color_read_format(ctx);
1261       break;
1262
1263    case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
1264       v->value_int = ctx->CurrentStack->Depth + 1;
1265       break;
1266    case GL_CURRENT_MATRIX_ARB:
1267    case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
1268       v->value_matrix = ctx->CurrentStack->Top;
1269       break;
1270
1271    case GL_MAX_VARYING_FLOATS_ARB:
1272       v->value_int = ctx->Const.MaxVarying * 4;
1273       break;
1274
1275    /* Various object names */
1276
1277    case GL_TEXTURE_BINDING_1D:
1278    case GL_TEXTURE_BINDING_2D:
1279    case GL_TEXTURE_BINDING_3D:
1280    case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
1281       unit = ctx->Texture.CurrentUnit;
1282       v->value_int =
1283          ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
1284       break;
1285
1286    /* GL_ARB_vertex_buffer_object */
1287    case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
1288    case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
1289    case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
1290    case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
1291    case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
1292    case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
1293    case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
1294       buffer_obj = (struct gl_buffer_object **)
1295          ((char *) ctx->Array.ArrayObj + d->offset);
1296       v->value_int = (*buffer_obj)->Name;
1297       break;
1298    case GL_ARRAY_BUFFER_BINDING_ARB:
1299       v->value_int = ctx->Array.ArrayBufferObj->Name;
1300       break;
1301    case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
1302       v->value_int =
1303          ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
1304       break;
1305    case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
1306       v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
1307       break;
1308
1309    case GL_FRAGMENT_PROGRAM_BINDING_NV:
1310       v->value_int =
1311          ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
1312       break;
1313    case GL_VERTEX_PROGRAM_BINDING_NV:
1314       v->value_int =
1315          ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
1316       break;
1317    case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
1318       v->value_int = ctx->Pack.BufferObj->Name;
1319       break;
1320    case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
1321       v->value_int = ctx->Unpack.BufferObj->Name;
1322       break;
1323    case GL_CURRENT_PROGRAM:
1324       v->value_int =
1325          ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
1326       break;
1327    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
1328       v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
1329       break;
1330
1331    case GL_FOG_COLOR:
1332       COPY_4FV(v->value_float_4, ctx->Fog.Color);
1333       break;
1334    case GL_COLOR_CLEAR_VALUE:
1335       v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
1336       v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
1337       v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
1338       v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
1339       break;
1340    case GL_BLEND_COLOR_EXT:
1341       COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
1342       break;
1343    case GL_ALPHA_TEST_REF:
1344          v->value_float = ctx->Color.AlphaRef;
1345          break;
1346    case GL_MAX_VERTEX_UNIFORM_VECTORS:
1347       v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
1348       break;
1349
1350    case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
1351       v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
1352       break;
1353    }
1354 }
1355
1356 /**
1357  * Check extra constraints on a struct value_desc descriptor
1358  *
1359  * If a struct value_desc has a non-NULL extra pointer, it means that
1360  * there are a number of extra constraints to check or actions to
1361  * perform.  The extras is just an integer array where each integer
1362  * encode different constraints or actions.
1363  *
1364  * \param ctx current context
1365  * \param func name of calling glGet*v() function for error reporting
1366  * \param d the struct value_desc that has the extra constraints
1367  *
1368  * \return GL_FALSE if one of the constraints was not satisfied,
1369  *     otherwise GL_TRUE.
1370  */
1371 static GLboolean
1372 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1373 {
1374    const GLuint version = ctx->VersionMajor * 10 + ctx->VersionMinor;
1375    int total, enabled;
1376    const int *e;
1377
1378    total = 0;
1379    enabled = 0;
1380    for (e = d->extra; *e != EXTRA_END; e++)
1381       switch (*e) {
1382       case EXTRA_VERSION_30:
1383          if (version >= 30) {
1384             total++;
1385             enabled++;
1386          }
1387          break;
1388       case EXTRA_VERSION_31:
1389          if (version >= 31) {
1390             total++;
1391             enabled++;
1392          }
1393          break;
1394       case EXTRA_VERSION_32:
1395          if (version >= 32) {
1396             total++;
1397             enabled++;
1398          }
1399          break;
1400       case EXTRA_NEW_BUFFERS:
1401          if (ctx->NewState & _NEW_BUFFERS)
1402             _mesa_update_state(ctx);
1403          break;
1404       case EXTRA_FLUSH_CURRENT:
1405          FLUSH_CURRENT(ctx, 0);
1406          break;
1407       case EXTRA_VALID_TEXTURE_UNIT:
1408          if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1409             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1410                         func, ctx->Texture.CurrentUnit);
1411             return GL_FALSE;
1412          }
1413          break;
1414       case EXTRA_VALID_CLIP_DISTANCE:
1415          if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1416             _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1417                         func, d->pname - GL_CLIP_DISTANCE0);
1418             return GL_FALSE;
1419          }
1420          break;
1421       case EXTRA_GLSL_130:
1422          if (ctx->Const.GLSLVersion >= 130) {
1423             total++;
1424             enabled++;
1425          }
1426          break;
1427       case EXTRA_END:
1428          break;
1429       default: /* *e is a offset into the extension struct */
1430          total++;
1431          if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1432             enabled++;
1433          break;
1434       }
1435
1436    if (total > 0 && enabled == 0) {
1437       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1438                   _mesa_lookup_enum_by_nr(d->pname));
1439       return GL_FALSE;
1440    }
1441
1442    return GL_TRUE;
1443 }
1444
1445 static const struct value_desc error_value =
1446    { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1447
1448 /**
1449  * Find the struct value_desc corresponding to the enum 'pname'.
1450  *
1451  * We hash the enum value to get an index into the 'table' array,
1452  * which holds the index in the 'values' array of struct value_desc.
1453  * Once we've found the entry, we do the extra checks, if any, then
1454  * look up the value and return a pointer to it.
1455  *
1456  * If the value has to be computed (for example, it's the result of a
1457  * function call or we need to add 1 to it), we use the tmp 'v' to
1458  * store the result.
1459  *
1460  * \param func name of glGet*v() func for error reporting
1461  * \param pname the enum value we're looking up
1462  * \param p is were we return the pointer to the value
1463  * \param v a tmp union value variable in the calling glGet*v() function
1464  *
1465  * \return the struct value_desc corresponding to the enum or a struct
1466  *     value_desc of TYPE_INVALID if not found.  This lets the calling
1467  *     glGet*v() function jump right into a switch statement and
1468  *     handle errors there instead of having to check for NULL.
1469  */
1470 static const struct value_desc *
1471 find_value(const char *func, GLenum pname, void **p, union value *v)
1472 {
1473    GET_CURRENT_CONTEXT(ctx);
1474    struct gl_texture_unit *unit;
1475    int mask, hash;
1476    const struct value_desc *d;
1477
1478    mask = Elements(table) - 1;
1479    hash = (pname * prime_factor);
1480    while (1) {
1481       d = &values[table[hash & mask]];
1482
1483       if (likely(d->pname == pname))
1484          break;
1485
1486       hash += prime_step;
1487    }
1488
1489    if (unlikely(d->extra && !check_extra(ctx, func, d)))
1490       return &error_value;
1491
1492    switch (d->location) {
1493    case LOC_BUFFER:
1494       *p = ((char *) ctx->DrawBuffer + d->offset);
1495       return d;
1496    case LOC_CONTEXT:
1497       *p = ((char *) ctx + d->offset);
1498       return d;
1499    case LOC_ARRAY:
1500       *p = ((char *) ctx->Array.ArrayObj + d->offset);
1501       return d;
1502    case LOC_TEXUNIT:
1503       unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1504       *p = ((char *) unit + d->offset);
1505       return d;
1506    case LOC_CUSTOM:
1507       find_custom_value(ctx, d, v);
1508       *p = v;
1509       return d;
1510    default:
1511       assert(0);
1512       break;
1513    }
1514
1515    /* silence warning */
1516    return &error_value;
1517 }
1518
1519 static const int transpose[] = {
1520    0, 4,  8, 12,
1521    1, 5,  9, 13,
1522    2, 6, 10, 14,
1523    3, 7, 11, 15
1524 };
1525
1526 void GLAPIENTRY
1527 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1528 {
1529    const struct value_desc *d;
1530    union value v;
1531    GLmatrix *m;
1532    int shift, i;
1533    void *p;
1534    GET_CURRENT_CONTEXT(ctx);
1535
1536    ASSERT_OUTSIDE_BEGIN_END(ctx);
1537
1538    d = find_value("glGetBooleanv", pname, &p, &v);
1539    switch (d->type) {
1540    case TYPE_INVALID:
1541       break;
1542    case TYPE_CONST:
1543       params[0] = INT_TO_BOOLEAN(d->offset);
1544       break;
1545
1546    case TYPE_FLOAT_4:
1547    case TYPE_FLOATN_4:
1548       params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1549    case TYPE_FLOAT_3:
1550    case TYPE_FLOATN_3:
1551       params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1552    case TYPE_FLOAT_2:
1553    case TYPE_FLOATN_2:
1554       params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1555    case TYPE_FLOAT:
1556    case TYPE_FLOATN:
1557       params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1558       break;
1559
1560    case TYPE_DOUBLEN:
1561       params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1562       break;
1563
1564    case TYPE_INT_4:
1565       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1566    case TYPE_INT_3:
1567       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1568    case TYPE_INT_2:
1569    case TYPE_ENUM_2:
1570       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1571    case TYPE_INT:
1572    case TYPE_ENUM:
1573       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1574       break;
1575
1576    case TYPE_INT_N:
1577       for (i = 0; i < v.value_int_n.n; i++)
1578          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1579       break;
1580
1581    case TYPE_INT64:
1582       params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1583       break;
1584
1585    case TYPE_BOOLEAN:
1586       params[0] = ((GLboolean*) p)[0];
1587       break;
1588
1589    case TYPE_MATRIX:
1590       m = *(GLmatrix **) p;
1591       for (i = 0; i < 16; i++)
1592          params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1593       break;
1594
1595    case TYPE_MATRIX_T:
1596       m = *(GLmatrix **) p;
1597       for (i = 0; i < 16; i++)
1598          params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1599       break;
1600
1601    case TYPE_BIT_0:
1602    case TYPE_BIT_1:
1603    case TYPE_BIT_2:
1604    case TYPE_BIT_3:
1605    case TYPE_BIT_4:
1606    case TYPE_BIT_5:
1607    case TYPE_BIT_6:
1608    case TYPE_BIT_7:
1609       shift = d->type - TYPE_BIT_0;
1610       params[0] = (*(GLbitfield *) p >> shift) & 1;
1611       break;
1612    }
1613 }
1614
1615 void GLAPIENTRY
1616 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1617 {
1618    const struct value_desc *d;
1619    union value v;
1620    GLmatrix *m;
1621    int shift, i;
1622    void *p;
1623    GET_CURRENT_CONTEXT(ctx);
1624
1625    ASSERT_OUTSIDE_BEGIN_END(ctx);
1626
1627    d = find_value("glGetFloatv", pname, &p, &v);
1628    switch (d->type) {
1629    case TYPE_INVALID:
1630       break;
1631    case TYPE_CONST:
1632       params[0] = (GLfloat) d->offset;
1633       break;
1634
1635    case TYPE_FLOAT_4:
1636    case TYPE_FLOATN_4:
1637       params[3] = ((GLfloat *) p)[3];
1638    case TYPE_FLOAT_3:
1639    case TYPE_FLOATN_3:
1640       params[2] = ((GLfloat *) p)[2];
1641    case TYPE_FLOAT_2:
1642    case TYPE_FLOATN_2:
1643       params[1] = ((GLfloat *) p)[1];
1644    case TYPE_FLOAT:
1645    case TYPE_FLOATN:
1646       params[0] = ((GLfloat *) p)[0];
1647       break;
1648
1649    case TYPE_DOUBLEN:
1650       params[0] = ((GLdouble *) p)[0];
1651       break;
1652
1653    case TYPE_INT_4:
1654       params[3] = (GLfloat) (((GLint *) p)[3]);
1655    case TYPE_INT_3:
1656       params[2] = (GLfloat) (((GLint *) p)[2]);
1657    case TYPE_INT_2:
1658    case TYPE_ENUM_2:
1659       params[1] = (GLfloat) (((GLint *) p)[1]);
1660    case TYPE_INT:
1661    case TYPE_ENUM:
1662       params[0] = (GLfloat) (((GLint *) p)[0]);
1663       break;
1664
1665    case TYPE_INT_N:
1666       for (i = 0; i < v.value_int_n.n; i++)
1667          params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1668       break;
1669
1670    case TYPE_INT64:
1671       params[0] = ((GLint64 *) p)[0];
1672       break;
1673
1674    case TYPE_BOOLEAN:
1675       params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1676       break;
1677
1678    case TYPE_MATRIX:
1679       m = *(GLmatrix **) p;
1680       for (i = 0; i < 16; i++)
1681          params[i] = m->m[i];
1682       break;
1683
1684    case TYPE_MATRIX_T:
1685       m = *(GLmatrix **) p;
1686       for (i = 0; i < 16; i++)
1687          params[i] = m->m[transpose[i]];
1688       break;
1689
1690    case TYPE_BIT_0:
1691    case TYPE_BIT_1:
1692    case TYPE_BIT_2:
1693    case TYPE_BIT_3:
1694    case TYPE_BIT_4:
1695    case TYPE_BIT_5:
1696    case TYPE_BIT_6:
1697    case TYPE_BIT_7:
1698       shift = d->type - TYPE_BIT_0;
1699       params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1700       break;
1701    }
1702 }
1703
1704 void GLAPIENTRY
1705 _mesa_GetIntegerv(GLenum pname, GLint *params)
1706 {
1707    const struct value_desc *d;
1708    union value v;
1709    GLmatrix *m;
1710    int shift, i;
1711    void *p;
1712    GET_CURRENT_CONTEXT(ctx);
1713
1714    ASSERT_OUTSIDE_BEGIN_END(ctx);
1715
1716    d = find_value("glGetIntegerv", pname, &p, &v);
1717    switch (d->type) {
1718    case TYPE_INVALID:
1719       break;
1720    case TYPE_CONST:
1721       params[0] = d->offset;
1722       break;
1723
1724    case TYPE_FLOAT_4:
1725       params[3] = IROUND(((GLfloat *) p)[3]);
1726    case TYPE_FLOAT_3:
1727       params[2] = IROUND(((GLfloat *) p)[2]);
1728    case TYPE_FLOAT_2:
1729       params[1] = IROUND(((GLfloat *) p)[1]);
1730    case TYPE_FLOAT:
1731       params[0] = IROUND(((GLfloat *) p)[0]);
1732       break;
1733
1734    case TYPE_FLOATN_4:
1735       params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1736    case TYPE_FLOATN_3:
1737       params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1738    case TYPE_FLOATN_2:
1739       params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1740    case TYPE_FLOATN:
1741       params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1742       break;
1743
1744    case TYPE_DOUBLEN:
1745       params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1746       break;
1747
1748    case TYPE_INT_4:
1749       params[3] = ((GLint *) p)[3];
1750    case TYPE_INT_3:
1751       params[2] = ((GLint *) p)[2];
1752    case TYPE_INT_2:
1753    case TYPE_ENUM_2:
1754       params[1] = ((GLint *) p)[1];
1755    case TYPE_INT:
1756    case TYPE_ENUM:
1757       params[0] = ((GLint *) p)[0];
1758       break;
1759
1760    case TYPE_INT_N:
1761       for (i = 0; i < v.value_int_n.n; i++)
1762          params[i] = v.value_int_n.ints[i];
1763       break;
1764
1765    case TYPE_INT64:
1766       params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1767       break;
1768
1769    case TYPE_BOOLEAN:
1770       params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1771       break;
1772
1773    case TYPE_MATRIX:
1774       m = *(GLmatrix **) p;
1775       for (i = 0; i < 16; i++)
1776          params[i] = FLOAT_TO_INT(m->m[i]);
1777       break;
1778
1779    case TYPE_MATRIX_T:
1780       m = *(GLmatrix **) p;
1781       for (i = 0; i < 16; i++)
1782          params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1783       break;
1784
1785    case TYPE_BIT_0:
1786    case TYPE_BIT_1:
1787    case TYPE_BIT_2:
1788    case TYPE_BIT_3:
1789    case TYPE_BIT_4:
1790    case TYPE_BIT_5:
1791    case TYPE_BIT_6:
1792    case TYPE_BIT_7:
1793       shift = d->type - TYPE_BIT_0;
1794       params[0] = (*(GLbitfield *) p >> shift) & 1;
1795       break;
1796    }
1797 }
1798
1799
1800 void GLAPIENTRY
1801 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1802 {
1803    const struct value_desc *d;
1804    union value v;
1805    GLmatrix *m;
1806    int shift, i;
1807    void *p;
1808    GET_CURRENT_CONTEXT(ctx);
1809
1810    ASSERT_OUTSIDE_BEGIN_END(ctx);
1811
1812    d = find_value("glGetDoublev", pname, &p, &v);
1813    switch (d->type) {
1814    case TYPE_INVALID:
1815       break;
1816    case TYPE_CONST:
1817       params[0] = d->offset;
1818       break;
1819
1820    case TYPE_FLOAT_4:
1821    case TYPE_FLOATN_4:
1822       params[3] = ((GLfloat *) p)[3];
1823    case TYPE_FLOAT_3:
1824    case TYPE_FLOATN_3:
1825       params[2] = ((GLfloat *) p)[2];
1826    case TYPE_FLOAT_2:
1827    case TYPE_FLOATN_2:
1828       params[1] = ((GLfloat *) p)[1];
1829    case TYPE_FLOAT:
1830    case TYPE_FLOATN:
1831       params[0] = ((GLfloat *) p)[0];
1832       break;
1833
1834    case TYPE_DOUBLEN:
1835       params[0] = ((GLdouble *) p)[0];
1836       break;
1837
1838    case TYPE_INT_4:
1839       params[3] = ((GLint *) p)[3];
1840    case TYPE_INT_3:
1841       params[2] = ((GLint *) p)[2];
1842    case TYPE_INT_2:
1843    case TYPE_ENUM_2:
1844       params[1] = ((GLint *) p)[1];
1845    case TYPE_INT:
1846    case TYPE_ENUM:
1847       params[0] = ((GLint *) p)[0];
1848       break;
1849
1850    case TYPE_INT_N:
1851       for (i = 0; i < v.value_int_n.n; i++)
1852          params[i] = v.value_int_n.ints[i];
1853       break;
1854
1855    case TYPE_INT64:
1856       params[0] = ((GLint64 *) p)[0];
1857       break;
1858
1859    case TYPE_BOOLEAN:
1860       params[0] = *(GLboolean*) p;
1861       break;
1862
1863    case TYPE_MATRIX:
1864       m = *(GLmatrix **) p;
1865       for (i = 0; i < 16; i++)
1866          params[i] = m->m[i];
1867       break;
1868
1869    case TYPE_MATRIX_T:
1870       m = *(GLmatrix **) p;
1871       for (i = 0; i < 16; i++)
1872          params[i] = m->m[transpose[i]];
1873       break;
1874
1875    case TYPE_BIT_0:
1876    case TYPE_BIT_1:
1877    case TYPE_BIT_2:
1878    case TYPE_BIT_3:
1879    case TYPE_BIT_4:
1880    case TYPE_BIT_5:
1881    case TYPE_BIT_6:
1882    case TYPE_BIT_7:
1883       shift = d->type - TYPE_BIT_0;
1884       params[0] = (*(GLbitfield *) p >> shift) & 1;
1885       break;
1886    }
1887 }
1888
1889 #if FEATURE_ES1
1890 void GLAPIENTRY
1891 _mesa_GetFixedv(GLenum pname, GLfixed *params)
1892 {
1893    const struct value_desc *d;
1894    union value v;
1895    GLmatrix *m;
1896    int shift, i;
1897    void *p;
1898
1899    d = find_value("glGetDoublev", pname, &p, &v);
1900    switch (d->type) {
1901    case TYPE_INVALID:
1902       break;
1903    case TYPE_CONST:
1904       params[0] = INT_TO_FIXED(d->offset);
1905       break;
1906
1907    case TYPE_FLOAT_4:
1908    case TYPE_FLOATN_4:
1909       params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
1910    case TYPE_FLOAT_3:
1911    case TYPE_FLOATN_3:
1912       params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
1913    case TYPE_FLOAT_2:
1914    case TYPE_FLOATN_2:
1915       params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
1916    case TYPE_FLOAT:
1917    case TYPE_FLOATN:
1918       params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
1919       break;
1920
1921    case TYPE_DOUBLEN:
1922       params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
1923       break;
1924
1925    case TYPE_INT_4:
1926       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
1927    case TYPE_INT_3:
1928       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
1929    case TYPE_INT_2:
1930    case TYPE_ENUM_2:
1931       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
1932    case TYPE_INT:
1933    case TYPE_ENUM:
1934       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
1935       break;
1936
1937    case TYPE_INT_N:
1938       for (i = 0; i < v.value_int_n.n; i++)
1939          params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
1940       break;
1941
1942    case TYPE_INT64:
1943       params[0] = ((GLint64 *) p)[0];
1944       break;
1945
1946    case TYPE_BOOLEAN:
1947       params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
1948       break;
1949
1950    case TYPE_MATRIX:
1951       m = *(GLmatrix **) p;
1952       for (i = 0; i < 16; i++)
1953          params[i] = FLOAT_TO_FIXED(m->m[i]);
1954       break;
1955
1956    case TYPE_MATRIX_T:
1957       m = *(GLmatrix **) p;
1958       for (i = 0; i < 16; i++)
1959          params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
1960       break;
1961
1962    case TYPE_BIT_0:
1963    case TYPE_BIT_1:
1964    case TYPE_BIT_2:
1965    case TYPE_BIT_3:
1966    case TYPE_BIT_4:
1967    case TYPE_BIT_5:
1968    case TYPE_BIT_6:
1969    case TYPE_BIT_7:
1970       shift = d->type - TYPE_BIT_0;
1971       params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
1972       break;
1973    }
1974 }
1975 #endif