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_uniform_buffer_object_and_geometry_shader[] = {
 288    EXT(ARB_uniform_buffer_object),
 289    EXT(ARB_geometry_shader4),
 290    EXTRA_END
 291 };
 292
 293
 294 EXTRA_EXT(ARB_ES2_compatibility);
 295 EXTRA_EXT(ARB_texture_cube_map);
 296 EXTRA_EXT(MESA_texture_array);
 297 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
 298 EXTRA_EXT(EXT_secondary_color);
 299 EXTRA_EXT(EXT_fog_coord);
 300 EXTRA_EXT(NV_fog_distance);
 301 EXTRA_EXT(EXT_texture_filter_anisotropic);
 302 EXTRA_EXT(IBM_rasterpos_clip);
 303 EXTRA_EXT(NV_point_sprite);
 304 EXTRA_EXT(NV_vertex_program);
 305 EXTRA_EXT(NV_fragment_program);
 306 EXTRA_EXT(NV_texture_rectangle);
 307 EXTRA_EXT(EXT_stencil_two_side);
 308 EXTRA_EXT(NV_light_max_exponent);
 309 EXTRA_EXT(EXT_depth_bounds_test);
 310 EXTRA_EXT(ARB_depth_clamp);
 311 EXTRA_EXT(ATI_fragment_shader);
 312 EXTRA_EXT(EXT_framebuffer_blit);
 313 EXTRA_EXT(ARB_shader_objects);
 314 EXTRA_EXT(EXT_provoking_vertex);
 315 EXTRA_EXT(ARB_fragment_shader);
 316 EXTRA_EXT(ARB_fragment_program);
 317 EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);
 318 EXTRA_EXT(EXT_framebuffer_object);
 319 EXTRA_EXT(APPLE_vertex_array_object);
 320 EXTRA_EXT(ARB_seamless_cube_map);
 321 EXTRA_EXT(EXT_compiled_vertex_array);
 322 EXTRA_EXT(ARB_sync);
 323 EXTRA_EXT(ARB_vertex_shader);
 324 EXTRA_EXT(EXT_transform_feedback);
 325 EXTRA_EXT(ARB_transform_feedback2);
 326 EXTRA_EXT(ARB_transform_feedback3);
 327 EXTRA_EXT(EXT_pixel_buffer_object);
 328 EXTRA_EXT(ARB_vertex_program);
 329 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
 330 EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);
 331 EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);
 332 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
 333 EXTRA_EXT(ARB_geometry_shader4);
 334 EXTRA_EXT(ARB_color_buffer_float);
 335 EXTRA_EXT(ARB_copy_buffer);
 336 EXTRA_EXT(EXT_framebuffer_sRGB);
 337 EXTRA_EXT(ARB_texture_buffer_object);
 338 EXTRA_EXT(OES_EGL_image_external);
 339 EXTRA_EXT(ARB_blend_func_extended);
 340 EXTRA_EXT(ARB_uniform_buffer_object);
 341 EXTRA_EXT(ARB_timer_query);
 342
 343 static const int
 344 extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 345    EXT(ARB_vertex_program),
 346    EXT(ARB_fragment_program),
 347    EXT(NV_vertex_program),
 348    EXTRA_END
 349 };
 350
 351 static const int
 352 extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 353    EXT(NV_vertex_program),
 354    EXT(ARB_vertex_program),
 355    EXT(ARB_fragment_program),
 356    EXT(NV_vertex_program),
 357    EXTRA_END
 358 };
 359
 360 static const int
 361 extra_NV_primitive_restart[] = {
 362    EXT(NV_primitive_restart),
 363    EXTRA_END
 364 };
 365
 366 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
 367 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
 368 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
 369
 370 static const int
 371 extra_ARB_vertex_program_api_es2[] = {
 372    EXT(ARB_vertex_program),
 373    EXTRA_API_ES2,
 374    EXTRA_END
 375 };
 376
 377 /* The ReadBuffer get token is valid under either full GL or under
 378  * GLES2 if the NV_read_buffer extension is available. */
 379 static const int
 380 extra_NV_read_buffer_api_gl[] = {
 381    EXT(NV_read_buffer),
 382    EXTRA_API_GL,
 383    EXTRA_END
 384 };
 385
 386 #define API_OPENGL_BIT (1 << API_OPENGL)
 387 #define API_OPENGLES_BIT (1 << API_OPENGLES)
 388 #define API_OPENGLES2_BIT (1 << API_OPENGLES2)
 389 #define API_OPENGL_CORE_BIT (1 << API_OPENGL_CORE)
 390
 391 /* This is the big table describing all the enums we accept in
 392  * glGet*v().  The table is partitioned into six parts: enums
 393  * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
 394  * between OpenGL and GLES, enums exclusive to GLES, etc for the
 395  * remaining combinations.  When we add the enums to the hash table in
 396  * _mesa_init_get_hash(), we only add the enums for the API we're
 397  * instantiating and the different sections are guarded by #if
 398  * FEATURE_GL etc to make sure we only compile in the enums we may
 399  * need. */
 400
 401 static const struct value_desc values[] = {
 402    /* Enums shared between OpenGL, GLES1 and GLES2 */
 403    { 0, 0, TYPE_API_MASK,
 404      API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGLES2_BIT |
 405        API_OPENGL_CORE_BIT,
 406      NO_EXTRA},
 407    { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },
 408    { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled), NO_EXTRA },
 409    { GL_BLEND_SRC, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
 410    { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },
 411    { GL_COLOR_CLEAR_VALUE, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 412    { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 413    { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag), NO_EXTRA },
 414    { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode), NO_EXTRA },
 415    { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits), NO_EXTRA },
 416    { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN), NO_EXTRA },
 417    { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func), NO_EXTRA },
 418    { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2), NO_EXTRA },
 419    { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test), NO_EXTRA },
 420    { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask), NO_EXTRA },
 421    { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag), NO_EXTRA },
 422    { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace), NO_EXTRA },
 423    { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },
 424    { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width), NO_EXTRA },
 425    { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth), NO_EXTRA },
 426    { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 427    { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize), NO_EXTRA },
 428    { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 429      offsetof(struct gl_context, Const.MaxTextureLevels), NO_EXTRA },
 430    { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth), NO_EXTRA },
 431    { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment), NO_EXTRA },
 432    { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize), NO_EXTRA },
 433    { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ), NO_EXTRA },
 434    { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ), NO_EXTRA },
 435    { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill), NO_EXTRA },
 436    { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },
 437    { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 438    { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled), NO_EXTRA },
 439    { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits), NO_EXTRA },
 440    { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear), NO_EXTRA },
 441    { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 442    { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 443    { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 444    { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
 445    { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 446    { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled), NO_EXTRA },
 447    { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 448    { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 449    { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits), NO_EXTRA },
 450    { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX, NO_EXTRA },
 451    { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment), NO_EXTRA },
 452    { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0, NO_EXTRA },
 453
 454    /* GL_ARB_multitexture */
 455    { GL_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 456
 457    /* Note that all the OES_* extensions require that the Mesa "struct
 458     * gl_extensions" include a member with the name of the extension.
 459     * That structure does not yet include OES extensions (and we're
 460     * not sure whether it will).  If it does, all the OES_*
 461     * extensions below should mark the dependency. */
 462
 463    /* GL_ARB_texture_cube_map */
 464    { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,
 465      TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },
 466    { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,
 467      offsetof(struct gl_context, Const.MaxCubeTextureLevels),
 468      extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */
 469
 470    /* XXX: OES_blend_subtract */
 471    { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].SrcRGB), NO_EXTRA },
 472    { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
 473    { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].SrcA), NO_EXTRA },
 474    { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].DstA), NO_EXTRA },
 475
 476    /* GL_BLEND_EQUATION_RGB, which is what we're really after, is
 477     * defined identically to GL_BLEND_EQUATION. */
 478    { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.Blend[0].EquationRGB), NO_EXTRA },
 479    { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.Blend[0].EquationA), NO_EXTRA },
 480
 481    /* GL_ARB_texture_compression */
 482    { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 483    { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0, NO_EXTRA },
 484
 485    /* GL_ARB_multisample */
 486    { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,
 487      CONTEXT_BOOL(Multisample.SampleAlphaToCoverage), NO_EXTRA },
 488    { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage), NO_EXTRA },
 489    { GL_SAMPLE_COVERAGE_VALUE_ARB,
 490      CONTEXT_FLOAT(Multisample.SampleCoverageValue), NO_EXTRA },
 491    { GL_SAMPLE_COVERAGE_INVERT_ARB,
 492      CONTEXT_BOOL(Multisample.SampleCoverageInvert), NO_EXTRA },
 493    { GL_SAMPLE_BUFFERS_ARB, BUFFER_INT(Visual.sampleBuffers), NO_EXTRA },
 494    { GL_SAMPLES_ARB, BUFFER_INT(Visual.samples), NO_EXTRA },
 495
 496    /* GL_SGIS_generate_mipmap */
 497    { GL_GENERATE_MIPMAP_HINT_SGIS, CONTEXT_ENUM(Hint.GenerateMipmap), NO_EXTRA },
 498
 499    /* GL_ARB_vertex_buffer_object */
 500    { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 501
 502    /* GL_ARB_vertex_buffer_object */
 503    /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */
 504    { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 505
 506    /* GL_ARB_color_buffer_float */
 507    { GL_CLAMP_VERTEX_COLOR, CONTEXT_ENUM(Light.ClampVertexColor), extra_ARB_color_buffer_float },
 508    { GL_CLAMP_FRAGMENT_COLOR, CONTEXT_ENUM(Color.ClampFragmentColor), extra_ARB_color_buffer_float },
 509    { GL_CLAMP_READ_COLOR, CONTEXT_ENUM(Color.ClampReadColor), extra_ARB_color_buffer_float },
 510
 511    /* GL_ARB_copy_buffer */
 512    { GL_COPY_READ_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
 513    { GL_COPY_WRITE_BUFFER, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_copy_buffer },
 514
 515    /* GL_OES_read_format */
 516    { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,
 517      extra_new_buffers },
 518    { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,
 519      extra_new_buffers },
 520
 521    /* GL_EXT_framebuffer_object */
 522    { GL_FRAMEBUFFER_BINDING_EXT, BUFFER_INT(Name),
 523      extra_EXT_framebuffer_object },
 524    { GL_RENDERBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
 525      extra_EXT_framebuffer_object },
 526    { GL_MAX_RENDERBUFFER_SIZE_EXT, CONTEXT_INT(Const.MaxRenderbufferSize),
 527      extra_EXT_framebuffer_object },
 528
 529    /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's
 530     * GLSL: */
 531    { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes), NO_EXTRA },
 532
 533 #if FEATURE_GL || FEATURE_ES1
 534    /* Enums in OpenGL and GLES1 */
 535    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGL_CORE_BIT, NO_EXTRA },
 536    { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights), NO_EXTRA },
 537    { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled), NO_EXTRA },
 538    { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled), NO_EXTRA },
 539    { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled), NO_EXTRA },
 540    { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled), NO_EXTRA },
 541    { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled), NO_EXTRA },
 542    { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled), NO_EXTRA },
 543    { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled), NO_EXTRA },
 544    { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled), NO_EXTRA },
 545    { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled), NO_EXTRA },
 546    { GL_LIGHT_MODEL_AMBIENT,
 547      CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4), NO_EXTRA },
 548    { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide), NO_EXTRA },
 549    { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled), NO_EXTRA },
 550    { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc), NO_EXTRA },
 551    { GL_ALPHA_TEST_REF, LOC_CUSTOM, TYPE_FLOATN, 0, extra_new_frag_clamp },
 552    { GL_BLEND_DST, CONTEXT_ENUM(Color.Blend[0].DstRGB), NO_EXTRA },
 553    { GL_CLIP_DISTANCE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 554    { GL_CLIP_DISTANCE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 555    { GL_CLIP_DISTANCE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 556    { GL_CLIP_DISTANCE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 557    { GL_CLIP_DISTANCE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 558    { GL_CLIP_DISTANCE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 559    { GL_CLIP_DISTANCE6, CONTEXT_BIT6(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 560    { GL_CLIP_DISTANCE7, CONTEXT_BIT7(Transform.ClipPlanesEnabled), extra_valid_clip_distance },
 561    { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled), NO_EXTRA },
 562    { GL_CURRENT_COLOR,
 563      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),
 564      extra_flush_current },
 565    { GL_CURRENT_NORMAL,
 566      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),
 567      extra_flush_current },
 568    { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 569      extra_flush_current_valid_texture_unit },
 570    { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]), NO_EXTRA },
 571    { GL_FOG, CONTEXT_BOOL(Fog.Enabled), NO_EXTRA },
 572    { GL_FOG_COLOR, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 573    { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density), NO_EXTRA },
 574    { GL_FOG_END, CONTEXT_FLOAT(Fog.End), NO_EXTRA },
 575    { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog), NO_EXTRA },
 576    { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode), NO_EXTRA },
 577    { GL_FOG_START, CONTEXT_FLOAT(Fog.Start), NO_EXTRA },
 578    { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag), NO_EXTRA },
 579    { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth), NO_EXTRA },
 580    { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA), NO_EXTRA },
 581    { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled), NO_EXTRA },
 582    { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp), NO_EXTRA },
 583    { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode), NO_EXTRA },
 584    { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH), NO_EXTRA },
 585    { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH), NO_EXTRA },
 586    { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), NO_EXTRA },
 587    { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top), NO_EXTRA },
 588    { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 589      offsetof(struct gl_context, ModelviewMatrixStack.Depth), NO_EXTRA },
 590    { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize), NO_EXTRA },
 591    { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages), NO_EXTRA },
 592    { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection), NO_EXTRA },
 593    { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size), NO_EXTRA },
 594    { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA), NO_EXTRA },
 595    { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag), NO_EXTRA },
 596    { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth), NO_EXTRA },
 597    { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize), NO_EXTRA },
 598    { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize), NO_EXTRA },
 599    { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold), NO_EXTRA },
 600    { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top), NO_EXTRA },
 601    { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 602      offsetof(struct gl_context, ProjectionMatrixStack.Depth), NO_EXTRA },
 603    { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals), NO_EXTRA },
 604    { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel), NO_EXTRA },
 605    { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 606    { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },
 607    { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,
 608      extra_valid_texture_unit  },
 609
 610    { GL_VERTEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_POS].Enabled), NO_EXTRA },
 611    { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Size), NO_EXTRA },
 612    { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_POS].Type), NO_EXTRA },
 613    { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_POS].Stride), NO_EXTRA },
 614    { GL_NORMAL_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_NORMAL].Enabled), NO_EXTRA },
 615    { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_NORMAL].Type), NO_EXTRA },
 616    { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_NORMAL].Stride), NO_EXTRA },
 617    { GL_COLOR_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR0].Enabled), NO_EXTRA },
 618    { GL_COLOR_ARRAY_SIZE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Size), NO_EXTRA },
 619    { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR0].Type), NO_EXTRA },
 620    { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR0].Stride), NO_EXTRA },
 621    { GL_TEXTURE_COORD_ARRAY,
 622      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled), NO_EXTRA },
 623    { GL_TEXTURE_COORD_ARRAY_SIZE,
 624      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Size), NO_EXTRA },
 625    { GL_TEXTURE_COORD_ARRAY_TYPE,
 626      LOC_CUSTOM, TYPE_ENUM, offsetof(struct gl_client_array, Type), NO_EXTRA },
 627    { GL_TEXTURE_COORD_ARRAY_STRIDE,
 628      LOC_CUSTOM, TYPE_INT, offsetof(struct gl_client_array, Stride), NO_EXTRA },
 629
 630    /* GL_ARB_ES2_compatibility */
 631    { GL_SHADER_COMPILER, CONST(1), extra_ARB_ES2_compatibility },
 632    { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying),
 633      extra_ARB_ES2_compatibility },
 634    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
 635      extra_ARB_ES2_compatibility },
 636    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0,
 637      extra_ARB_ES2_compatibility },
 638
 639    /* GL_ARB_multitexture */
 640    { GL_MAX_TEXTURE_UNITS, CONTEXT_INT(Const.MaxTextureUnits), NO_EXTRA },
 641    { GL_CLIENT_ACTIVE_TEXTURE, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 642
 643    /* GL_ARB_texture_cube_map */
 644    { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 645    /* S, T, and R are always set at the same time */
 646    { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,
 647      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 648
 649    /* GL_ARB_multisample */
 650    { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled), NO_EXTRA },
 651    { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne), NO_EXTRA },
 652
 653    /* GL_ARB_vertex_buffer_object */
 654    { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 655      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_POS].BufferObj), NO_EXTRA },
 656    { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 657      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_NORMAL].BufferObj), NO_EXTRA },
 658    { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 659      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR0].BufferObj), NO_EXTRA },
 660    { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, NO_OFFSET, NO_EXTRA },
 661
 662    /* GL_OES_point_sprite */
 663    { GL_POINT_SPRITE_NV,
 664      CONTEXT_BOOL(Point.PointSprite),
 665      extra_NV_point_sprite_ARB_point_sprite },
 666
 667    /* GL_ARB_fragment_shader */
 668    { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,
 669      CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),
 670      extra_ARB_fragment_shader },
 671
 672    /* GL_ARB_vertex_shader */
 673    { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,
 674      CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),
 675      extra_ARB_vertex_shader },
 676    { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,
 677      extra_ARB_vertex_shader },
 678
 679    /* GL_EXT_texture_lod_bias */
 680    { GL_MAX_TEXTURE_LOD_BIAS_EXT, CONTEXT_FLOAT(Const.MaxTextureLodBias),
 681      NO_EXTRA },
 682
 683    /* GL_EXT_texture_filter_anisotropic */
 684    { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
 685      CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),
 686      extra_EXT_texture_filter_anisotropic },
 687 #endif /* FEATURE_GL || FEATURE_ES1 */
 688
 689 #if FEATURE_ES1
 690    { 0, 0, TYPE_API_MASK, API_OPENGLES_BIT },
 691    /* XXX: OES_matrix_get */
 692    { GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES },
 693    { GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES },
 694    { GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES },
 695
 696    /* OES_point_size_array */
 697    { GL_POINT_SIZE_ARRAY_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Enabled, TYPE_BOOLEAN) },
 698    { GL_POINT_SIZE_ARRAY_TYPE_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Type, TYPE_ENUM) },
 699    { GL_POINT_SIZE_ARRAY_STRIDE_OES, ARRAY_FIELD(VertexAttrib[VERT_ATTRIB_POINT_SIZE].Stride, TYPE_INT) },
 700    { GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES, LOC_CUSTOM, TYPE_INT, 0 },
 701 #endif /* FEATURE_ES1 */
 702
 703 #if FEATURE_GL || FEATURE_ES2
 704    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES2_BIT, NO_EXTRA },
 705    { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */
 706      CONTEXT_INT(Const.MaxTextureCoordUnits),
 707      extra_ARB_fragment_program_NV_fragment_program },
 708
 709    /* GL_ARB_draw_buffers */
 710    { GL_MAX_DRAW_BUFFERS_ARB, CONTEXT_INT(Const.MaxDrawBuffers), NO_EXTRA },
 711
 712    /* GL_EXT_framebuffer_object / GL_NV_fbo_color_attachments */
 713    { GL_MAX_COLOR_ATTACHMENTS, CONTEXT_INT(Const.MaxColorAttachments),
 714      extra_EXT_framebuffer_object },
 715
 716    /* GL_ARB_draw_buffers / GL_NV_draw_buffers (for ES 2.0) */
 717    { GL_DRAW_BUFFER0_ARB, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
 718    { GL_DRAW_BUFFER1_ARB, BUFFER_ENUM(ColorDrawBuffer[1]),
 719      extra_valid_draw_buffer },
 720    { GL_DRAW_BUFFER2_ARB, BUFFER_ENUM(ColorDrawBuffer[2]),
 721      extra_valid_draw_buffer },
 722    { GL_DRAW_BUFFER3_ARB, BUFFER_ENUM(ColorDrawBuffer[3]),
 723      extra_valid_draw_buffer },
 724    { GL_DRAW_BUFFER4_ARB, BUFFER_ENUM(ColorDrawBuffer[4]),
 725      extra_valid_draw_buffer },
 726    { GL_DRAW_BUFFER5_ARB, BUFFER_ENUM(ColorDrawBuffer[5]),
 727      extra_valid_draw_buffer },
 728    { GL_DRAW_BUFFER6_ARB, BUFFER_ENUM(ColorDrawBuffer[6]),
 729      extra_valid_draw_buffer },
 730    { GL_DRAW_BUFFER7_ARB, BUFFER_ENUM(ColorDrawBuffer[7]),
 731      extra_valid_draw_buffer },
 732
 733    { GL_BLEND_COLOR_EXT, LOC_CUSTOM, TYPE_FLOATN_4, 0, extra_new_frag_clamp },
 734    /* GL_ARB_fragment_program */
 735    { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */
 736      CONTEXT_INT(Const.MaxTextureImageUnits),
 737      extra_ARB_fragment_program_NV_fragment_program },
 738    { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,
 739      CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },
 740    { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,
 741      CONTEXT_INT(Const.MaxCombinedTextureImageUnits),
 742      extra_ARB_vertex_shader },
 743
 744    /* GL_ARB_shader_objects
 745     * Actually, this token isn't part of GL_ARB_shader_objects, but is
 746     * close enough for now. */
 747    { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },
 748
 749    /* OpenGL 2.0 */
 750    { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]), NO_EXTRA },
 751    { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]), NO_EXTRA },
 752    { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]), NO_EXTRA },
 753    { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]), NO_EXTRA },
 754    { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]), NO_EXTRA },
 755    { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]), NO_EXTRA },
 756    { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]), NO_EXTRA },
 757
 758    { GL_MAX_VERTEX_ATTRIBS_ARB,
 759      CONTEXT_INT(Const.VertexProgram.MaxAttribs),
 760      extra_ARB_vertex_program_api_es2 },
 761
 762    /* OES_texture_3D */
 763    { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX, NO_EXTRA },
 764    { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 765      offsetof(struct gl_context, Const.Max3DTextureLevels), NO_EXTRA },
 766
 767    /* GL_ARB_fragment_program/OES_standard_derivatives */
 768    { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,
 769      CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },
 770
 771    /* GL_NV_read_buffer */
 772    { GL_READ_BUFFER,
 773      LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, extra_NV_read_buffer_api_gl },
 774
 775 #endif /* FEATURE_GL || FEATURE_ES2 */
 776
 777 #if FEATURE_ES2
 778    /* Enums unique to OpenGL ES 2.0 */
 779    { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT, NO_EXTRA },
 780    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 781    { GL_MAX_VARYING_VECTORS, CONTEXT_INT(Const.MaxVarying), NO_EXTRA },
 782    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 783    { GL_SHADER_COMPILER, CONST(1), NO_EXTRA },
 784    /* OES_get_program_binary */
 785    { GL_NUM_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 786    { GL_SHADER_BINARY_FORMATS, CONST(0), NO_EXTRA },
 787 #endif /* FEATURE_ES2 */
 788
 789    /* GL_OES_EGL_image_external */
 790    { GL_TEXTURE_BINDING_EXTERNAL_OES, LOC_CUSTOM,
 791      TYPE_INT, TEXTURE_EXTERNAL_INDEX, extra_OES_EGL_image_external },
 792    { GL_TEXTURE_EXTERNAL_OES, LOC_CUSTOM,
 793      TYPE_BOOLEAN, 0, extra_OES_EGL_image_external },
 794
 795 #if FEATURE_GL
 796    /* Remaining enums are only in OpenGL */
 797    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGL_CORE_BIT, NO_EXTRA },
 798    { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits), NO_EXTRA },
 799    { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits), NO_EXTRA },
 800    { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits), NO_EXTRA },
 801    { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits), NO_EXTRA },
 802    { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4), NO_EXTRA },
 803    { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias), NO_EXTRA },
 804    { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale), NO_EXTRA },
 805    { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth), NO_EXTRA },
 806    { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal), NO_EXTRA },
 807    { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers), NO_EXTRA },
 808    { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias), NO_EXTRA },
 809    { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale), NO_EXTRA },
 810    { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth), NO_EXTRA },
 811    { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace), NO_EXTRA },
 812    { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode), NO_EXTRA },
 813    { GL_CURRENT_INDEX,
 814      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
 815      extra_flush_current },
 816    { GL_CURRENT_RASTER_COLOR,
 817      CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4), NO_EXTRA },
 818    { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance), NO_EXTRA },
 819    { GL_CURRENT_RASTER_INDEX, CONST(1), NO_EXTRA },
 820    { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]), NO_EXTRA },
 821    { GL_CURRENT_RASTER_SECONDARY_COLOR,
 822      CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4), NO_EXTRA },
 823    { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 824      extra_valid_texture_unit },
 825    { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid), NO_EXTRA },
 826    { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias), NO_EXTRA },
 827    { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale), NO_EXTRA },
 828    { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode), NO_EXTRA },
 829    { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]), NO_EXTRA },
 830    { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0, NO_EXTRA },
 831    { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize), NO_EXTRA },
 832    { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type), NO_EXTRA },
 833    { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index), NO_EXTRA },
 834    { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias), NO_EXTRA },
 835    { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale), NO_EXTRA },
 836    { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
 837    { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex), NO_EXTRA },
 838    { GL_INDEX_MODE, CONST(0) , NO_EXTRA},
 839    { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset), NO_EXTRA },
 840    { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift), NO_EXTRA },
 841    { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask), NO_EXTRA },
 842    { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl), NO_EXTRA },
 843    { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer), NO_EXTRA },
 844    { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag), NO_EXTRA },
 845    { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 846    { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor), NO_EXTRA },
 847    { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity), NO_EXTRA },
 848    { GL_LIST_BASE, CONTEXT_INT(List.ListBase), NO_EXTRA },
 849    { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0, NO_EXTRA },
 850    { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0, NO_EXTRA },
 851    { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled), NO_EXTRA },
 852    { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4), NO_EXTRA },
 853    { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1), NO_EXTRA },
 854    { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un), NO_EXTRA },
 855    { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index), NO_EXTRA },
 856    { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal), NO_EXTRA },
 857    { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1), NO_EXTRA },
 858    { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2), NO_EXTRA },
 859    { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3), NO_EXTRA },
 860    { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4), NO_EXTRA },
 861    { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3), NO_EXTRA },
 862    { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4), NO_EXTRA },
 863    { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4), NO_EXTRA },
 864    { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0, NO_EXTRA },
 865    { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un), NO_EXTRA },
 866    { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index), NO_EXTRA },
 867    { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal), NO_EXTRA },
 868    { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1), NO_EXTRA },
 869    { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2), NO_EXTRA },
 870    { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3), NO_EXTRA },
 871    { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4), NO_EXTRA },
 872    { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3), NO_EXTRA },
 873    { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4), NO_EXTRA },
 874    { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag), NO_EXTRA },
 875    { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag), NO_EXTRA },
 876    { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH), NO_EXTRA },
 877    { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH), NO_EXTRA },
 878
 879    { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER), NO_EXTRA },
 880    { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING), NO_EXTRA },
 881    { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH), NO_EXTRA },
 882    { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE), NO_EXTRA },
 883    { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth), NO_EXTRA },
 884    { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst), NO_EXTRA },
 885    { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength), NO_EXTRA },
 886    { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels), NO_EXTRA },
 887    { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows), NO_EXTRA },
 888    { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes), NO_EXTRA },
 889    { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight), NO_EXTRA },
 890    { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert), NO_EXTRA },
 891    { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size), NO_EXTRA },
 892    { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size), NO_EXTRA },
 893    { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size), NO_EXTRA },
 894    { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size), NO_EXTRA },
 895    { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size), NO_EXTRA },
 896    { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size), NO_EXTRA },
 897    { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size), NO_EXTRA },
 898    { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size), NO_EXTRA },
 899    { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size), NO_EXTRA },
 900    { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size), NO_EXTRA },
 901    { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity), NO_EXTRA },
 902    { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode), NO_EXTRA },
 903    { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits), NO_EXTRA },
 904    { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint), NO_EXTRA },
 905    { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine), NO_EXTRA },
 906    { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag), NO_EXTRA },
 907    { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth), NO_EXTRA },
 908    { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag), NO_EXTRA },
 909    { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias), NO_EXTRA },
 910    { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale), NO_EXTRA },
 911    { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode), NO_EXTRA },
 912    { GL_RGBA_MODE, CONST(1), NO_EXTRA },
 913    { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize), NO_EXTRA },
 914
 915    { GL_STEREO, BUFFER_INT(Visual.stereoMode), NO_EXTRA },
 916
 917    { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 918    { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 919    { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 920    { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, NO_OFFSET, NO_EXTRA },
 921
 922    { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX, NO_EXTRA },
 923    { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,
 924      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 925    { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,
 926      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 927    { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,
 928      CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },
 929
 930    { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
 931      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 932    { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
 933      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 934    { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
 935      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 936    { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
 937      offsetof(struct gl_texture_unit, TexGenEnabled), NO_EXTRA },
 938    { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst), NO_EXTRA },
 939    { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength), NO_EXTRA },
 940    { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels), NO_EXTRA },
 941    { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows), NO_EXTRA },
 942    { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes), NO_EXTRA },
 943    { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages), NO_EXTRA },
 944    { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight), NO_EXTRA },
 945    { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX), NO_EXTRA },
 946    { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY), NO_EXTRA },
 947
 948    /* Vertex arrays */
 949    { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 950    { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 951    { GL_COLOR_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 952    { GL_INDEX_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Enabled), NO_EXTRA },
 953    { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Type), NO_EXTRA },
 954    { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR_INDEX].Stride), NO_EXTRA },
 955    { GL_INDEX_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 956    { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 957    { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Enabled), NO_EXTRA },
 958    { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(VertexAttrib[VERT_ATTRIB_EDGEFLAG].Stride), NO_EXTRA },
 959    { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0), NO_EXTRA },
 960
 961    /* GL_ARB_texture_compression */
 962    { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression), NO_EXTRA },
 963
 964    /* GL_EXT_compiled_vertex_array */
 965    { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
 966      extra_EXT_compiled_vertex_array },
 967    { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
 968      extra_EXT_compiled_vertex_array },
 969
 970    /* GL_ARB_transpose_matrix */
 971    { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
 972      CONTEXT_MATRIX_T(ModelviewMatrixStack), NO_EXTRA },
 973    { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
 974      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top), NO_EXTRA },
 975    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack), NO_EXTRA },
 976
 977    /* GL_EXT_secondary_color */
 978    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
 979      extra_EXT_secondary_color_ARB_vertex_program },
 980    { GL_CURRENT_SECONDARY_COLOR_EXT,
 981      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
 982      extra_EXT_secondary_color_flush_current },
 983    { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_COLOR1].Enabled),
 984      extra_EXT_secondary_color },
 985    { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_COLOR1].Type),
 986      extra_EXT_secondary_color },
 987    { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Stride),
 988      extra_EXT_secondary_color },
 989    { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_COLOR1].Size),
 990      extra_EXT_secondary_color },
 991
 992    /* GL_EXT_fog_coord */
 993    { GL_CURRENT_FOG_COORDINATE_EXT,
 994      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
 995      extra_EXT_fog_coord_flush_current },
 996    { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_FOG].Enabled),
 997      extra_EXT_fog_coord },
 998    { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(VertexAttrib[VERT_ATTRIB_FOG].Type),
 999      extra_EXT_fog_coord },
1000    { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(VertexAttrib[VERT_ATTRIB_FOG].Stride),
1001      extra_EXT_fog_coord },
1002    { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
1003      extra_EXT_fog_coord },
1004
1005    /* GL_NV_fog_distance */
1006    { GL_FOG_DISTANCE_MODE_NV, CONTEXT_ENUM(Fog.FogDistanceMode),
1007      extra_NV_fog_distance },
1008
1009    /* GL_IBM_rasterpos_clip */
1010    { GL_RASTER_POSITION_UNCLIPPED_IBM,
1011      CONTEXT_BOOL(Transform.RasterPositionUnclipped),
1012      extra_IBM_rasterpos_clip },
1013
1014    /* GL_NV_point_sprite */
1015    { GL_POINT_SPRITE_R_MODE_NV,
1016      CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
1017    { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
1018      extra_NV_point_sprite_ARB_point_sprite },
1019
1020    /* GL_NV_vertex_program */
1021    { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1022      extra_NV_vertex_program },
1023    { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(0)].Enabled),
1024      extra_NV_vertex_program },
1025    { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(1)].Enabled),
1026      extra_NV_vertex_program },
1027    { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(2)].Enabled),
1028      extra_NV_vertex_program },
1029    { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(3)].Enabled),
1030      extra_NV_vertex_program },
1031    { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(4)].Enabled),
1032      extra_NV_vertex_program },
1033    { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(5)].Enabled),
1034      extra_NV_vertex_program },
1035    { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(6)].Enabled),
1036      extra_NV_vertex_program },
1037    { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(7)].Enabled),
1038      extra_NV_vertex_program },
1039    { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(8)].Enabled),
1040      extra_NV_vertex_program },
1041    { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(9)].Enabled),
1042      extra_NV_vertex_program },
1043    { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(10)].Enabled),
1044      extra_NV_vertex_program },
1045    { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(11)].Enabled),
1046      extra_NV_vertex_program },
1047    { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(12)].Enabled),
1048      extra_NV_vertex_program },
1049    { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(13)].Enabled),
1050      extra_NV_vertex_program },
1051    { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(14)].Enabled),
1052      extra_NV_vertex_program },
1053    { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[VERT_ATTRIB_GENERIC(15)].Enabled),
1054      extra_NV_vertex_program },
1055    { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
1056      extra_NV_vertex_program },
1057    { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
1058      extra_NV_vertex_program },
1059    { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
1060      extra_NV_vertex_program },
1061    { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
1062      extra_NV_vertex_program },
1063    { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
1064      extra_NV_vertex_program },
1065    { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
1066      extra_NV_vertex_program },
1067    { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
1068      extra_NV_vertex_program },
1069    { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
1070      extra_NV_vertex_program },
1071    { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
1072      extra_NV_vertex_program },
1073    { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
1074      extra_NV_vertex_program },
1075    { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
1076      extra_NV_vertex_program },
1077    { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
1078      extra_NV_vertex_program },
1079    { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
1080      extra_NV_vertex_program },
1081    { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
1082      extra_NV_vertex_program },
1083    { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
1084      extra_NV_vertex_program },
1085    { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
1086      extra_NV_vertex_program },
1087
1088    /* GL_NV_fragment_program */
1089    { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
1090      extra_NV_fragment_program },
1091    { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1092      extra_NV_fragment_program },
1093    { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
1094      CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
1095      extra_NV_fragment_program },
1096
1097    /* GL_NV_texture_rectangle */
1098    { GL_TEXTURE_RECTANGLE_NV,
1099      LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },
1100    { GL_TEXTURE_BINDING_RECTANGLE_NV,
1101      LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },
1102    { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,
1103      CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },
1104
1105    /* GL_EXT_stencil_two_side */
1106    { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
1107          extra_EXT_stencil_two_side },
1108    { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, NO_OFFSET, NO_EXTRA },
1109
1110    /* GL_NV_light_max_exponent */
1111    { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
1112      extra_NV_light_max_exponent },
1113    { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
1114      extra_NV_light_max_exponent },
1115
1116    /* GL_NV_primitive_restart */
1117    { GL_PRIMITIVE_RESTART_NV, CONTEXT_BOOL(Array.PrimitiveRestart),
1118      extra_NV_primitive_restart },
1119    { GL_PRIMITIVE_RESTART_INDEX_NV, CONTEXT_INT(Array.RestartIndex),
1120      extra_NV_primitive_restart },
1121
1122    /* GL_ARB_vertex_buffer_object */
1123    { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1124      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR_INDEX].BufferObj), NO_EXTRA },
1125    { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1126      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_EDGEFLAG].BufferObj), NO_EXTRA },
1127    { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1128      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_COLOR1].BufferObj), NO_EXTRA },
1129    { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1130      offsetof(struct gl_array_object, VertexAttrib[VERT_ATTRIB_FOG].BufferObj), NO_EXTRA },
1131
1132    /* GL_EXT_pixel_buffer_object */
1133    { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1134      extra_EXT_pixel_buffer_object },
1135    { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1136      extra_EXT_pixel_buffer_object },
1137
1138    /* GL_ARB_vertex_program */
1139    { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
1140      CONTEXT_BOOL(VertexProgram.Enabled),
1141      extra_ARB_vertex_program_NV_vertex_program },
1142    { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
1143      CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
1144      extra_ARB_vertex_program_NV_vertex_program },
1145    { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1146      CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
1147      extra_ARB_vertex_program_NV_vertex_program },
1148    { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
1149      CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
1150      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1151    { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
1152      CONTEXT_INT(Const.MaxProgramMatrices),
1153      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1154    { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
1155      LOC_CUSTOM, TYPE_INT, 0,
1156      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1157
1158    { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1159      LOC_CUSTOM, TYPE_MATRIX, 0,
1160      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1161    { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1162      LOC_CUSTOM, TYPE_MATRIX, 0,
1163      extra_ARB_vertex_program_ARB_fragment_program },
1164
1165    { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
1166      CONTEXT_INT(Program.ErrorPos),
1167      extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1168
1169    /* GL_ARB_fragment_program */
1170    { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
1171      extra_ARB_fragment_program },
1172
1173    /* GL_EXT_depth_bounds_test */
1174    { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
1175      extra_EXT_depth_bounds_test },
1176    { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
1177      extra_EXT_depth_bounds_test },
1178
1179    /* GL_ARB_depth_clamp*/
1180    { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),
1181      extra_ARB_depth_clamp },
1182
1183    /* GL_ATI_fragment_shader */
1184    { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },
1185    { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },
1186    { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },
1187    { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },
1188    { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },
1189    { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },
1190    { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },
1191    { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,
1192      CONST(3), extra_ATI_fragment_shader },
1193
1194    /* GL_EXT_framebuffer_blit
1195     * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */
1196    { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1197      extra_EXT_framebuffer_blit },
1198
1199    /* GL_EXT_provoking_vertex */
1200    { GL_PROVOKING_VERTEX_EXT,
1201      CONTEXT_ENUM(Light.ProvokingVertex), extra_EXT_provoking_vertex },
1202    { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,
1203      CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),
1204      extra_EXT_provoking_vertex },
1205
1206    /* GL_ARB_framebuffer_object */
1207    { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),
1208      extra_ARB_framebuffer_object_EXT_framebuffer_multisample },
1209
1210    /* GL_APPLE_vertex_array_object */
1211    { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),
1212      extra_APPLE_vertex_array_object },
1213
1214    /* GL_ARB_seamless_cube_map */
1215    { GL_TEXTURE_CUBE_MAP_SEAMLESS,
1216      CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },
1217
1218    /* GL_ARB_sync */
1219    { GL_MAX_SERVER_WAIT_TIMEOUT,
1220      CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },
1221
1222    /* GL_EXT_texture_integer */
1223    { GL_RGBA_INTEGER_MODE_EXT, BUFFER_BOOL(_IntegerColor),
1224      extra_EXT_texture_integer },
1225
1226    /* GL_EXT_transform_feedback */
1227    { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1228      extra_EXT_transform_feedback },
1229    { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(RasterDiscard),
1230      extra_EXT_transform_feedback },
1231    { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
1232      CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),
1233      extra_EXT_transform_feedback },
1234    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
1235      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1236      extra_EXT_transform_feedback },
1237    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
1238      CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),
1239      extra_EXT_transform_feedback },
1240
1241    /* GL_ARB_transform_feedback2 */
1242    { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1243      extra_ARB_transform_feedback2 },
1244    { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1245      extra_ARB_transform_feedback2 },
1246    { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1247      extra_ARB_transform_feedback2 },
1248
1249    /* GL_ARB_transform_feedback3 */
1250    { GL_MAX_TRANSFORM_FEEDBACK_BUFFERS,
1251      CONTEXT_INT(Const.MaxTransformFeedbackBuffers),
1252      extra_ARB_transform_feedback3 },
1253    { GL_MAX_VERTEX_STREAMS,
1254      CONTEXT_INT(Const.MaxVertexStreams),
1255      extra_ARB_transform_feedback3 },
1256
1257    /* GL_ARB_geometry_shader4 */
1258    { GL_MAX_GEOMETRY_TEXTURE_IMAGE_UNITS_ARB,
1259      CONTEXT_INT(Const.MaxGeometryTextureImageUnits),
1260      extra_ARB_geometry_shader4 },
1261    { GL_MAX_GEOMETRY_OUTPUT_VERTICES_ARB,
1262      CONTEXT_INT(Const.MaxGeometryOutputVertices),
1263      extra_ARB_geometry_shader4 },
1264    { GL_MAX_GEOMETRY_TOTAL_OUTPUT_COMPONENTS_ARB,
1265      CONTEXT_INT(Const.MaxGeometryTotalOutputComponents),
1266      extra_ARB_geometry_shader4 },
1267    { GL_MAX_GEOMETRY_UNIFORM_COMPONENTS_ARB,
1268      CONTEXT_INT(Const.GeometryProgram.MaxUniformComponents),
1269      extra_ARB_geometry_shader4 },
1270    { GL_MAX_GEOMETRY_VARYING_COMPONENTS_ARB,
1271      CONTEXT_INT(Const.MaxGeometryVaryingComponents),
1272      extra_ARB_geometry_shader4 },
1273    { GL_MAX_VERTEX_VARYING_COMPONENTS_ARB,
1274      CONTEXT_INT(Const.MaxVertexVaryingComponents),
1275      extra_ARB_geometry_shader4 },
1276
1277    /* GL_ARB_color_buffer_float */
1278    { GL_RGBA_FLOAT_MODE_ARB, BUFFER_FIELD(Visual.floatMode, TYPE_BOOLEAN), 0 },
1279
1280    /* GL_EXT_gpu_shader4 / GLSL 1.30 */
1281    { GL_MIN_PROGRAM_TEXEL_OFFSET,
1282      CONTEXT_INT(Const.MinProgramTexelOffset),
1283      extra_GLSL_130 },
1284    { GL_MAX_PROGRAM_TEXEL_OFFSET,
1285      CONTEXT_INT(Const.MaxProgramTexelOffset),
1286      extra_GLSL_130 },
1287
1288    /* GL_ARB_texture_buffer_object */
1289    { GL_MAX_TEXTURE_BUFFER_SIZE_ARB, CONTEXT_INT(Const.MaxTextureBufferSize),
1290      extra_ARB_texture_buffer_object },
1291    { GL_TEXTURE_BINDING_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1292      extra_ARB_texture_buffer_object },
1293    { GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1294      TEXTURE_BUFFER_INDEX, extra_ARB_texture_buffer_object },
1295    { GL_TEXTURE_BUFFER_FORMAT_ARB, LOC_CUSTOM, TYPE_INT, 0,
1296      extra_ARB_texture_buffer_object },
1297    { GL_TEXTURE_BUFFER_ARB, LOC_CUSTOM, TYPE_INT, 0,
1298      extra_ARB_texture_buffer_object },
1299
1300    /* GL_ARB_sampler_objects / GL 3.3 */
1301    { GL_SAMPLER_BINDING,
1302      LOC_CUSTOM, TYPE_INT, GL_SAMPLER_BINDING, NO_EXTRA },
1303
1304    /* GL 3.0 */
1305    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1306    { GL_MAJOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1307    { GL_MINOR_VERSION, LOC_CUSTOM, TYPE_INT, 0, extra_version_30  },
1308    { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
1309
1310    /* GL3.0 / GL_EXT_framebuffer_sRGB */
1311    { GL_FRAMEBUFFER_SRGB_EXT, CONTEXT_BOOL(Color.sRGBEnabled), extra_EXT_framebuffer_sRGB },
1312    { GL_FRAMEBUFFER_SRGB_CAPABLE_EXT, BUFFER_INT(Visual.sRGBCapable), extra_EXT_framebuffer_sRGB },
1313
1314    /* GL 3.1 */
1315    /* NOTE: different enum values for GL_PRIMITIVE_RESTART_NV
1316     * vs. GL_PRIMITIVE_RESTART!
1317     */
1318    { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),
1319      extra_version_31 },
1320    { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),
1321      extra_version_31 },
1322
1323
1324    /* GL 3.2 */
1325    { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
1326      extra_version_32 },
1327
1328    /* GL_ARB_robustness */
1329    { GL_RESET_NOTIFICATION_STRATEGY_ARB, CONTEXT_ENUM(Const.ResetStrategy), NO_EXTRA },
1330
1331    /* GL_ARB_debug_output */
1332    { GL_DEBUG_LOGGED_MESSAGES_ARB, CONTEXT_INT(Debug.NumMessages), NO_EXTRA },
1333    { GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_ARB, CONTEXT_INT(Debug.NextMsgLength), NO_EXTRA },
1334    { GL_MAX_DEBUG_LOGGED_MESSAGES_ARB, CONST(MAX_DEBUG_LOGGED_MESSAGES), NO_EXTRA },
1335    { GL_MAX_DEBUG_MESSAGE_LENGTH_ARB, CONST(MAX_DEBUG_MESSAGE_LENGTH), NO_EXTRA },
1336
1337    { GL_MAX_DUAL_SOURCE_DRAW_BUFFERS, CONTEXT_INT(Const.MaxDualSourceDrawBuffers), extra_ARB_blend_func_extended },
1338
1339    /* GL_ARB_uniform_buffer_object */
1340    { GL_MAX_VERTEX_UNIFORM_BLOCKS, CONTEXT_INT(Const.VertexProgram.MaxUniformBlocks),
1341      extra_ARB_uniform_buffer_object },
1342    { GL_MAX_FRAGMENT_UNIFORM_BLOCKS, CONTEXT_INT(Const.FragmentProgram.MaxUniformBlocks),
1343      extra_ARB_uniform_buffer_object },
1344    { GL_MAX_GEOMETRY_UNIFORM_BLOCKS, CONTEXT_INT(Const.GeometryProgram.MaxUniformBlocks),
1345      extra_ARB_uniform_buffer_object_and_geometry_shader },
1346    { GL_MAX_COMBINED_UNIFORM_BLOCKS, CONTEXT_INT(Const.MaxCombinedUniformBlocks),
1347      extra_ARB_uniform_buffer_object },
1348    { GL_MAX_UNIFORM_BLOCK_SIZE, CONTEXT_INT(Const.MaxUniformBlockSize),
1349      extra_ARB_uniform_buffer_object },
1350    { GL_MAX_UNIFORM_BUFFER_BINDINGS, CONTEXT_INT(Const.MaxUniformBufferBindings),
1351      extra_ARB_uniform_buffer_object },
1352
1353    { GL_MAX_COMBINED_VERTEX_UNIFORM_COMPONENTS, CONTEXT_INT(Const.VertexProgram.MaxCombinedUniformComponents),
1354      extra_ARB_uniform_buffer_object },
1355    { GL_MAX_COMBINED_FRAGMENT_UNIFORM_COMPONENTS, CONTEXT_INT(Const.FragmentProgram.MaxCombinedUniformComponents),
1356      extra_ARB_uniform_buffer_object },
1357    { GL_MAX_COMBINED_GEOMETRY_UNIFORM_COMPONENTS, CONTEXT_INT(Const.GeometryProgram.MaxCombinedUniformComponents),
1358      extra_ARB_uniform_buffer_object_and_geometry_shader },
1359    { GL_UNIFORM_BUFFER_OFFSET_ALIGNMENT, CONTEXT_INT(Const.UniformBufferOffsetAlignment),
1360      extra_ARB_uniform_buffer_object },
1361
1362    { GL_UNIFORM_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_uniform_buffer_object },
1363
1364    /* GL_ARB_timer_query */
1365    { GL_TIMESTAMP, LOC_CUSTOM, TYPE_INT64, 0, extra_ARB_timer_query }
1366
1367 #endif /* FEATURE_GL */
1368 };
1369
1370 /* All we need now is a way to look up the value struct from the enum.
1371  * The code generated by gcc for the old generated big switch
1372  * statement is a big, balanced, open coded if/else tree, essentially
1373  * an unrolled binary search.  It would be natural to sort the new
1374  * enum table and use bsearch(), but we will use a read-only hash
1375  * table instead.  bsearch() has a nice guaranteed worst case
1376  * performance, but we're also guaranteed to hit that worst case
1377  * (log2(n) iterations) for about half the enums.  Instead, using an
1378  * open addressing hash table, we can find the enum on the first try
1379  * for 80% of the enums, 1 collision for 10% and never more than 5
1380  * collisions for any enum (typical numbers).  And the code is very
1381  * simple, even though it feels a little magic. */
1382
1383 static unsigned short table[1024];
1384 static const int prime_factor = 89, prime_step = 281;
1385
1386 #ifdef GET_DEBUG
1387 static void
1388 print_table_stats(void)
1389 {
1390    int i, j, collisions[11], count, hash, mask;
1391    const struct value_desc *d;
1392
1393    count = 0;
1394    mask = Elements(table) - 1;
1395    memset(collisions, 0, sizeof collisions);
1396
1397    for (i = 0; i < Elements(table); i++) {
1398       if (!table[i])
1399          continue;
1400       count++;
1401       d = &values[table[i]];
1402       hash = (d->pname * prime_factor);
1403       j = 0;
1404       while (1) {
1405          if (values[table[hash & mask]].pname == d->pname)
1406             break;
1407          hash += prime_step;
1408          j++;
1409       }
1410
1411       if (j < 10)
1412          collisions[j]++;
1413       else
1414          collisions[10]++;
1415    }
1416
1417    printf("number of enums: %d (total %d)\n", count, Elements(values));
1418    for (i = 0; i < Elements(collisions) - 1; i++)
1419       if (collisions[i] > 0)
1420          printf("  %d enums with %d %scollisions\n",
1421                 collisions[i], i, i == 10 ? "or more " : "");
1422 }
1423 #endif
1424
1425 /**
1426  * Initialize the enum hash for a given API
1427  *
1428  * This is called from one_time_init() to insert the enum values that
1429  * are valid for the API in question into the enum hash table.
1430  *
1431  * \param the current context, for determining the API in question
1432  */
1433 void _mesa_init_get_hash(struct gl_context *ctx)
1434 {
1435    int i, hash, index, mask;
1436    int api_mask = 0, api_bit;
1437
1438    mask = Elements(table) - 1;
1439    api_bit = 1 << ctx->API;
1440
1441    for (i = 0; i < Elements(values); i++) {
1442       if (values[i].type == TYPE_API_MASK) {
1443          api_mask = values[i].offset;
1444          continue;
1445       }
1446       if (!(api_mask & api_bit))
1447          continue;
1448
1449       hash = (values[i].pname * prime_factor) & mask;
1450       while (1) {
1451          index = hash & mask;
1452          if (!table[index]) {
1453             table[index] = i;
1454             break;
1455          }
1456          hash += prime_step;
1457       }
1458    }
1459
1460 #ifdef GET_DEBUG
1461    print_table_stats();
1462 #endif
1463 }
1464
1465 /**
1466  * Handle irregular enums
1467  *
1468  * Some values don't conform to the "well-known type at context
1469  * pointer + offset" pattern, so we have this function to catch all
1470  * the corner cases.  Typically, it's a computed value or a one-off
1471  * pointer to a custom struct or something.
1472  *
1473  * In this case we can't return a pointer to the value, so we'll have
1474  * to use the temporary variable 'v' declared back in the calling
1475  * glGet*v() function to store the result.
1476  *
1477  * \param ctx the current context
1478  * \param d the struct value_desc that describes the enum
1479  * \param v pointer to the tmp declared in the calling glGet*v() function
1480  */
1481 static void
1482 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
1483 {
1484    struct gl_buffer_object **buffer_obj;
1485    struct gl_client_array *array;
1486    GLuint unit, *p;
1487
1488    switch (d->pname) {
1489    case GL_MAJOR_VERSION:
1490       v->value_int = ctx->Version / 10;
1491       break;
1492    case GL_MINOR_VERSION:
1493       v->value_int = ctx->Version % 10;
1494       break;
1495
1496    case GL_TEXTURE_1D:
1497    case GL_TEXTURE_2D:
1498    case GL_TEXTURE_3D:
1499    case GL_TEXTURE_1D_ARRAY_EXT:
1500    case GL_TEXTURE_2D_ARRAY_EXT:
1501    case GL_TEXTURE_CUBE_MAP_ARB:
1502    case GL_TEXTURE_RECTANGLE_NV:
1503    case GL_TEXTURE_EXTERNAL_OES:
1504       v->value_bool = _mesa_IsEnabled(d->pname);
1505       break;
1506
1507    case GL_LINE_STIPPLE_PATTERN:
1508       /* This is the only GLushort, special case it here by promoting
1509        * to an int rather than introducing a new type. */
1510       v->value_int = ctx->Line.StipplePattern;
1511       break;
1512
1513    case GL_CURRENT_RASTER_TEXTURE_COORDS:
1514       unit = ctx->Texture.CurrentUnit;
1515       v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
1516       v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
1517       v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
1518       v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
1519       break;
1520
1521    case GL_CURRENT_TEXTURE_COORDS:
1522       unit = ctx->Texture.CurrentUnit;
1523       v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
1524       v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
1525       v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
1526       v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
1527       break;
1528
1529    case GL_COLOR_WRITEMASK:
1530       v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
1531       v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
1532       v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
1533       v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
1534       break;
1535
1536    case GL_EDGE_FLAG:
1537       v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
1538       break;
1539
1540    case GL_READ_BUFFER:
1541       v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
1542       break;
1543
1544    case GL_MAP2_GRID_DOMAIN:
1545       v->value_float_4[0] = ctx->Eval.MapGrid2u1;
1546       v->value_float_4[1] = ctx->Eval.MapGrid2u2;
1547       v->value_float_4[2] = ctx->Eval.MapGrid2v1;
1548       v->value_float_4[3] = ctx->Eval.MapGrid2v2;
1549       break;
1550
1551    case GL_TEXTURE_STACK_DEPTH:
1552       unit = ctx->Texture.CurrentUnit;
1553       v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
1554       break;
1555    case GL_TEXTURE_MATRIX:
1556       unit = ctx->Texture.CurrentUnit;
1557       v->value_matrix = ctx->TextureMatrixStack[unit].Top;
1558       break;
1559
1560    case GL_TEXTURE_COORD_ARRAY:
1561    case GL_TEXTURE_COORD_ARRAY_SIZE:
1562    case GL_TEXTURE_COORD_ARRAY_TYPE:
1563    case GL_TEXTURE_COORD_ARRAY_STRIDE:
1564       array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
1565       v->value_int = *(GLuint *) ((char *) array + d->offset);
1566       break;
1567
1568    case GL_ACTIVE_TEXTURE_ARB:
1569       v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
1570       break;
1571    case GL_CLIENT_ACTIVE_TEXTURE_ARB:
1572       v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
1573       break;
1574
1575    case GL_MODELVIEW_STACK_DEPTH:
1576    case GL_PROJECTION_STACK_DEPTH:
1577       v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
1578       break;
1579
1580    case GL_MAX_TEXTURE_SIZE:
1581    case GL_MAX_3D_TEXTURE_SIZE:
1582    case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
1583       p = (GLuint *) ((char *) ctx + d->offset);
1584       v->value_int = 1 << (*p - 1);
1585       break;
1586
1587    case GL_SCISSOR_BOX:
1588       v->value_int_4[0] = ctx->Scissor.X;
1589       v->value_int_4[1] = ctx->Scissor.Y;
1590       v->value_int_4[2] = ctx->Scissor.Width;
1591       v->value_int_4[3] = ctx->Scissor.Height;
1592       break;
1593
1594    case GL_LIST_INDEX:
1595       v->value_int =
1596          ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
1597       break;
1598    case GL_LIST_MODE:
1599       if (!ctx->CompileFlag)
1600          v->value_enum = 0;
1601       else if (ctx->ExecuteFlag)
1602          v->value_enum = GL_COMPILE_AND_EXECUTE;
1603       else
1604          v->value_enum = GL_COMPILE;
1605       break;
1606
1607    case GL_VIEWPORT:
1608       v->value_int_4[0] = ctx->Viewport.X;
1609       v->value_int_4[1] = ctx->Viewport.Y;
1610       v->value_int_4[2] = ctx->Viewport.Width;
1611       v->value_int_4[3] = ctx->Viewport.Height;
1612       break;
1613
1614    case GL_ACTIVE_STENCIL_FACE_EXT:
1615       v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
1616       break;
1617
1618    case GL_STENCIL_FAIL:
1619       v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
1620       break;
1621    case GL_STENCIL_FUNC:
1622       v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
1623       break;
1624    case GL_STENCIL_PASS_DEPTH_FAIL:
1625       v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
1626       break;
1627    case GL_STENCIL_PASS_DEPTH_PASS:
1628       v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
1629       break;
1630    case GL_STENCIL_REF:
1631       v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
1632       break;
1633    case GL_STENCIL_VALUE_MASK:
1634       v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
1635       break;
1636    case GL_STENCIL_WRITEMASK:
1637       v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
1638       break;
1639
1640    case GL_NUM_EXTENSIONS:
1641       v->value_int = _mesa_get_extension_count(ctx);
1642       break;
1643
1644    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
1645       v->value_int = _mesa_get_color_read_type(ctx);
1646       break;
1647    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
1648       v->value_int = _mesa_get_color_read_format(ctx);
1649       break;
1650
1651    case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
1652       v->value_int = ctx->CurrentStack->Depth + 1;
1653       break;
1654    case GL_CURRENT_MATRIX_ARB:
1655    case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
1656       v->value_matrix = ctx->CurrentStack->Top;
1657       break;
1658
1659    case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
1660       v->value_int = _mesa_get_compressed_formats(ctx, NULL);
1661       break;
1662    case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
1663       v->value_int_n.n =
1664          _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
1665       ASSERT(v->value_int_n.n <= 100);
1666       break;
1667
1668    case GL_MAX_VARYING_FLOATS_ARB:
1669       v->value_int = ctx->Const.MaxVarying * 4;
1670       break;
1671
1672    /* Various object names */
1673
1674    case GL_TEXTURE_BINDING_1D:
1675    case GL_TEXTURE_BINDING_2D:
1676    case GL_TEXTURE_BINDING_3D:
1677    case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
1678    case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
1679    case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
1680    case GL_TEXTURE_BINDING_RECTANGLE_NV:
1681    case GL_TEXTURE_BINDING_EXTERNAL_OES:
1682       unit = ctx->Texture.CurrentUnit;
1683       v->value_int =
1684          ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
1685       break;
1686
1687    /* GL_ARB_vertex_buffer_object */
1688    case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
1689    case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
1690    case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
1691    case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
1692    case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
1693    case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
1694    case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
1695       buffer_obj = (struct gl_buffer_object **)
1696          ((char *) ctx->Array.ArrayObj + d->offset);
1697       v->value_int = (*buffer_obj)->Name;
1698       break;
1699    case GL_ARRAY_BUFFER_BINDING_ARB:
1700       v->value_int = ctx->Array.ArrayBufferObj->Name;
1701       break;
1702    case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
1703       v->value_int =
1704          ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
1705       break;
1706    case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
1707       v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
1708       break;
1709
1710    /* ARB_copy_buffer */
1711    case GL_COPY_READ_BUFFER:
1712       v->value_int = ctx->CopyReadBuffer->Name;
1713       break;
1714    case GL_COPY_WRITE_BUFFER:
1715       v->value_int = ctx->CopyWriteBuffer->Name;
1716       break;
1717
1718    case GL_FRAGMENT_PROGRAM_BINDING_NV:
1719       v->value_int =
1720          ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
1721       break;
1722    case GL_VERTEX_PROGRAM_BINDING_NV:
1723       v->value_int =
1724          ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
1725       break;
1726    case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
1727       v->value_int = ctx->Pack.BufferObj->Name;
1728       break;
1729    case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
1730       v->value_int = ctx->Unpack.BufferObj->Name;
1731       break;
1732    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1733       v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
1734       break;
1735    case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
1736       v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
1737       break;
1738    case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
1739       v->value_int = ctx->TransformFeedback.CurrentObject->Active;
1740       break;
1741    case GL_TRANSFORM_FEEDBACK_BINDING:
1742       v->value_int = ctx->TransformFeedback.CurrentObject->Name;
1743       break;
1744    case GL_CURRENT_PROGRAM:
1745       v->value_int =
1746          ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
1747       break;
1748    case GL_READ_FRAMEBUFFER_BINDING_EXT:
1749       v->value_int = ctx->ReadBuffer->Name;
1750       break;
1751    case GL_RENDERBUFFER_BINDING_EXT:
1752       v->value_int =
1753          ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
1754       break;
1755    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
1756       v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
1757       break;
1758
1759    case GL_FOG_COLOR:
1760       if(ctx->Color._ClampFragmentColor)
1761          COPY_4FV(v->value_float_4, ctx->Fog.Color);
1762       else
1763          COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
1764       break;
1765    case GL_COLOR_CLEAR_VALUE:
1766       if(ctx->Color._ClampFragmentColor) {
1767          v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
1768          v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
1769          v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
1770          v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
1771       } else
1772          COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
1773       break;
1774    case GL_BLEND_COLOR_EXT:
1775       if(ctx->Color._ClampFragmentColor)
1776          COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
1777       else
1778          COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
1779       break;
1780    case GL_ALPHA_TEST_REF:
1781       if(ctx->Color._ClampFragmentColor)
1782          v->value_float = ctx->Color.AlphaRef;
1783       else
1784          v->value_float = ctx->Color.AlphaRefUnclamped;
1785       break;
1786    case GL_MAX_VERTEX_UNIFORM_VECTORS:
1787       v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
1788       break;
1789
1790    case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
1791       v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
1792       break;
1793
1794    /* GL_ARB_texture_buffer_object */
1795    case GL_TEXTURE_BUFFER_ARB:
1796       v->value_int = ctx->Texture.BufferObject->Name;
1797       break;
1798    case GL_TEXTURE_BINDING_BUFFER_ARB:
1799       unit = ctx->Texture.CurrentUnit;
1800       v->value_int =
1801          ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
1802       break;
1803    case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
1804       {
1805          struct gl_buffer_object *buf =
1806             ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1807             .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
1808          v->value_int = buf ? buf->Name : 0;
1809       }
1810       break;
1811    case GL_TEXTURE_BUFFER_FORMAT_ARB:
1812       v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
1813          .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
1814       break;
1815
1816    /* GL_ARB_sampler_objects */
1817    case GL_SAMPLER_BINDING:
1818       {
1819          struct gl_sampler_object *samp =
1820             ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
1821          v->value_int = samp ? samp->Name : 0;
1822       }
1823       break;
1824    /* GL_ARB_uniform_buffer_object */
1825    case GL_UNIFORM_BUFFER_BINDING:
1826       v->value_int = ctx->UniformBuffer->Name;
1827       break;
1828    /* GL_ARB_timer_query */
1829    case GL_TIMESTAMP:
1830       if (ctx->Driver.GetTimestamp) {
1831          v->value_int64 = ctx->Driver.GetTimestamp(ctx);
1832       }
1833       else {
1834          _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
1835       }
1836       break;
1837    }
1838 }
1839
1840 /**
1841  * Check extra constraints on a struct value_desc descriptor
1842  *
1843  * If a struct value_desc has a non-NULL extra pointer, it means that
1844  * there are a number of extra constraints to check or actions to
1845  * perform.  The extras is just an integer array where each integer
1846  * encode different constraints or actions.
1847  *
1848  * \param ctx current context
1849  * \param func name of calling glGet*v() function for error reporting
1850  * \param d the struct value_desc that has the extra constraints
1851  *
1852  * \return GL_FALSE if one of the constraints was not satisfied,
1853  *     otherwise GL_TRUE.
1854  */
1855 static GLboolean
1856 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1857 {
1858    const GLuint version = ctx->Version;
1859    int total, enabled;
1860    const int *e;
1861
1862    total = 0;
1863    enabled = 0;
1864    for (e = d->extra; *e != EXTRA_END; e++)
1865       switch (*e) {
1866       case EXTRA_VERSION_30:
1867          if (version >= 30) {
1868             total++;
1869             enabled++;
1870          }
1871          break;
1872       case EXTRA_VERSION_31:
1873          if (version >= 31) {
1874             total++;
1875             enabled++;
1876          }
1877          break;
1878       case EXTRA_VERSION_32:
1879          if (version >= 32) {
1880             total++;
1881             enabled++;
1882          }
1883          break;
1884       case EXTRA_NEW_FRAG_CLAMP:
1885          if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1886             _mesa_update_state(ctx);
1887          break;
1888       case EXTRA_API_ES2:
1889          if (ctx->API == API_OPENGLES2) {
1890             total++;
1891             enabled++;
1892          }
1893          break;
1894       case EXTRA_API_GL:
1895          if (_mesa_is_desktop_gl(ctx)) {
1896             total++;
1897             enabled++;
1898          }
1899          break;
1900       case EXTRA_NEW_BUFFERS:
1901          if (ctx->NewState & _NEW_BUFFERS)
1902             _mesa_update_state(ctx);
1903          break;
1904       case EXTRA_FLUSH_CURRENT:
1905          FLUSH_CURRENT(ctx, 0);
1906          break;
1907       case EXTRA_VALID_DRAW_BUFFER:
1908          if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1909             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1910                         func, d->pname - GL_DRAW_BUFFER0_ARB);
1911             return GL_FALSE;
1912          }
1913          break;
1914       case EXTRA_VALID_TEXTURE_UNIT:
1915          if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1916             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1917                         func, ctx->Texture.CurrentUnit);
1918             return GL_FALSE;
1919          }
1920          break;
1921       case EXTRA_VALID_CLIP_DISTANCE:
1922          if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1923             _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1924                         func, d->pname - GL_CLIP_DISTANCE0);
1925             return GL_FALSE;
1926          }
1927          break;
1928       case EXTRA_GLSL_130:
1929          if (ctx->Const.GLSLVersion >= 130) {
1930             total++;
1931             enabled++;
1932          }
1933          break;
1934       case EXTRA_END:
1935          break;
1936       default: /* *e is a offset into the extension struct */
1937          total++;
1938          if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1939             enabled++;
1940          break;
1941       }
1942
1943    if (total > 0 && enabled == 0) {
1944       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1945                   _mesa_lookup_enum_by_nr(d->pname));
1946       return GL_FALSE;
1947    }
1948
1949    return GL_TRUE;
1950 }
1951
1952 static const struct value_desc error_value =
1953    { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1954
1955 /**
1956  * Find the struct value_desc corresponding to the enum 'pname'.
1957  *
1958  * We hash the enum value to get an index into the 'table' array,
1959  * which holds the index in the 'values' array of struct value_desc.
1960  * Once we've found the entry, we do the extra checks, if any, then
1961  * look up the value and return a pointer to it.
1962  *
1963  * If the value has to be computed (for example, it's the result of a
1964  * function call or we need to add 1 to it), we use the tmp 'v' to
1965  * store the result.
1966  *
1967  * \param func name of glGet*v() func for error reporting
1968  * \param pname the enum value we're looking up
1969  * \param p is were we return the pointer to the value
1970  * \param v a tmp union value variable in the calling glGet*v() function
1971  *
1972  * \return the struct value_desc corresponding to the enum or a struct
1973  *     value_desc of TYPE_INVALID if not found.  This lets the calling
1974  *     glGet*v() function jump right into a switch statement and
1975  *     handle errors there instead of having to check for NULL.
1976  */
1977 static const struct value_desc *
1978 find_value(const char *func, GLenum pname, void **p, union value *v)
1979 {
1980    GET_CURRENT_CONTEXT(ctx);
1981    struct gl_texture_unit *unit;
1982    int mask, hash;
1983    const struct value_desc *d;
1984
1985    mask = Elements(table) - 1;
1986    hash = (pname * prime_factor);
1987    while (1) {
1988       d = &values[table[hash & mask]];
1989
1990       /* If the enum isn't valid, the hash walk ends with index 0,
1991        * which is the API mask entry at the beginning of values[]. */
1992       if (unlikely(d->type == TYPE_API_MASK)) {
1993          _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1994                      _mesa_lookup_enum_by_nr(pname));
1995          return &error_value;
1996       }
1997
1998       if (likely(d->pname == pname))
1999          break;
2000
2001       hash += prime_step;
2002    }
2003
2004    if (unlikely(d->extra && !check_extra(ctx, func, d)))
2005       return &error_value;
2006
2007    switch (d->location) {
2008    case LOC_BUFFER:
2009       *p = ((char *) ctx->DrawBuffer + d->offset);
2010       return d;
2011    case LOC_CONTEXT:
2012       *p = ((char *) ctx + d->offset);
2013       return d;
2014    case LOC_ARRAY:
2015       *p = ((char *) ctx->Array.ArrayObj + d->offset);
2016       return d;
2017    case LOC_TEXUNIT:
2018       unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
2019       *p = ((char *) unit + d->offset);
2020       return d;
2021    case LOC_CUSTOM:
2022       find_custom_value(ctx, d, v);
2023       *p = v;
2024       return d;
2025    default:
2026       assert(0);
2027       break;
2028    }
2029
2030    /* silence warning */
2031    return &error_value;
2032 }
2033
2034 static const int transpose[] = {
2035    0, 4,  8, 12,
2036    1, 5,  9, 13,
2037    2, 6, 10, 14,
2038    3, 7, 11, 15
2039 };
2040
2041 void GLAPIENTRY
2042 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
2043 {
2044    const struct value_desc *d;
2045    union value v;
2046    GLmatrix *m;
2047    int shift, i;
2048    void *p;
2049    GET_CURRENT_CONTEXT(ctx);
2050
2051    ASSERT_OUTSIDE_BEGIN_END(ctx);
2052
2053    d = find_value("glGetBooleanv", pname, &p, &v);
2054    switch (d->type) {
2055    case TYPE_INVALID:
2056       break;
2057    case TYPE_CONST:
2058       params[0] = INT_TO_BOOLEAN(d->offset);
2059       break;
2060
2061    case TYPE_FLOAT_4:
2062    case TYPE_FLOATN_4:
2063       params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
2064    case TYPE_FLOAT_3:
2065    case TYPE_FLOATN_3:
2066       params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
2067    case TYPE_FLOAT_2:
2068    case TYPE_FLOATN_2:
2069       params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
2070    case TYPE_FLOAT:
2071    case TYPE_FLOATN:
2072       params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
2073       break;
2074
2075    case TYPE_DOUBLEN:
2076       params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
2077       break;
2078
2079    case TYPE_INT_4:
2080       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
2081    case TYPE_INT_3:
2082       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
2083    case TYPE_INT_2:
2084    case TYPE_ENUM_2:
2085       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
2086    case TYPE_INT:
2087    case TYPE_ENUM:
2088       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
2089       break;
2090
2091    case TYPE_INT_N:
2092       for (i = 0; i < v.value_int_n.n; i++)
2093          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2094       break;
2095
2096    case TYPE_INT64:
2097       params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
2098       break;
2099
2100    case TYPE_BOOLEAN:
2101       params[0] = ((GLboolean*) p)[0];
2102       break;
2103
2104    case TYPE_MATRIX:
2105       m = *(GLmatrix **) p;
2106       for (i = 0; i < 16; i++)
2107          params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
2108       break;
2109
2110    case TYPE_MATRIX_T:
2111       m = *(GLmatrix **) p;
2112       for (i = 0; i < 16; i++)
2113          params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
2114       break;
2115
2116    case TYPE_BIT_0:
2117    case TYPE_BIT_1:
2118    case TYPE_BIT_2:
2119    case TYPE_BIT_3:
2120    case TYPE_BIT_4:
2121    case TYPE_BIT_5:
2122    case TYPE_BIT_6:
2123    case TYPE_BIT_7:
2124       shift = d->type - TYPE_BIT_0;
2125       params[0] = (*(GLbitfield *) p >> shift) & 1;
2126       break;
2127    }
2128 }
2129
2130 void GLAPIENTRY
2131 _mesa_GetFloatv(GLenum pname, GLfloat *params)
2132 {
2133    const struct value_desc *d;
2134    union value v;
2135    GLmatrix *m;
2136    int shift, i;
2137    void *p;
2138    GET_CURRENT_CONTEXT(ctx);
2139
2140    ASSERT_OUTSIDE_BEGIN_END(ctx);
2141
2142    d = find_value("glGetFloatv", pname, &p, &v);
2143    switch (d->type) {
2144    case TYPE_INVALID:
2145       break;
2146    case TYPE_CONST:
2147       params[0] = (GLfloat) d->offset;
2148       break;
2149
2150    case TYPE_FLOAT_4:
2151    case TYPE_FLOATN_4:
2152       params[3] = ((GLfloat *) p)[3];
2153    case TYPE_FLOAT_3:
2154    case TYPE_FLOATN_3:
2155       params[2] = ((GLfloat *) p)[2];
2156    case TYPE_FLOAT_2:
2157    case TYPE_FLOATN_2:
2158       params[1] = ((GLfloat *) p)[1];
2159    case TYPE_FLOAT:
2160    case TYPE_FLOATN:
2161       params[0] = ((GLfloat *) p)[0];
2162       break;
2163
2164    case TYPE_DOUBLEN:
2165       params[0] = ((GLdouble *) p)[0];
2166       break;
2167
2168    case TYPE_INT_4:
2169       params[3] = (GLfloat) (((GLint *) p)[3]);
2170    case TYPE_INT_3:
2171       params[2] = (GLfloat) (((GLint *) p)[2]);
2172    case TYPE_INT_2:
2173    case TYPE_ENUM_2:
2174       params[1] = (GLfloat) (((GLint *) p)[1]);
2175    case TYPE_INT:
2176    case TYPE_ENUM:
2177       params[0] = (GLfloat) (((GLint *) p)[0]);
2178       break;
2179
2180    case TYPE_INT_N:
2181       for (i = 0; i < v.value_int_n.n; i++)
2182          params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
2183       break;
2184
2185    case TYPE_INT64:
2186       params[0] = ((GLint64 *) p)[0];
2187       break;
2188
2189    case TYPE_BOOLEAN:
2190       params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
2191       break;
2192
2193    case TYPE_MATRIX:
2194       m = *(GLmatrix **) p;
2195       for (i = 0; i < 16; i++)
2196          params[i] = m->m[i];
2197       break;
2198
2199    case TYPE_MATRIX_T:
2200       m = *(GLmatrix **) p;
2201       for (i = 0; i < 16; i++)
2202          params[i] = m->m[transpose[i]];
2203       break;
2204
2205    case TYPE_BIT_0:
2206    case TYPE_BIT_1:
2207    case TYPE_BIT_2:
2208    case TYPE_BIT_3:
2209    case TYPE_BIT_4:
2210    case TYPE_BIT_5:
2211    case TYPE_BIT_6:
2212    case TYPE_BIT_7:
2213       shift = d->type - TYPE_BIT_0;
2214       params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
2215       break;
2216    }
2217 }
2218
2219 void GLAPIENTRY
2220 _mesa_GetIntegerv(GLenum pname, GLint *params)
2221 {
2222    const struct value_desc *d;
2223    union value v;
2224    GLmatrix *m;
2225    int shift, i;
2226    void *p;
2227    GET_CURRENT_CONTEXT(ctx);
2228
2229    ASSERT_OUTSIDE_BEGIN_END(ctx);
2230
2231    d = find_value("glGetIntegerv", pname, &p, &v);
2232    switch (d->type) {
2233    case TYPE_INVALID:
2234       break;
2235    case TYPE_CONST:
2236       params[0] = d->offset;
2237       break;
2238
2239    case TYPE_FLOAT_4:
2240       params[3] = IROUND(((GLfloat *) p)[3]);
2241    case TYPE_FLOAT_3:
2242       params[2] = IROUND(((GLfloat *) p)[2]);
2243    case TYPE_FLOAT_2:
2244       params[1] = IROUND(((GLfloat *) p)[1]);
2245    case TYPE_FLOAT:
2246       params[0] = IROUND(((GLfloat *) p)[0]);
2247       break;
2248
2249    case TYPE_FLOATN_4:
2250       params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
2251    case TYPE_FLOATN_3:
2252       params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
2253    case TYPE_FLOATN_2:
2254       params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
2255    case TYPE_FLOATN:
2256       params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
2257       break;
2258
2259    case TYPE_DOUBLEN:
2260       params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
2261       break;
2262
2263    case TYPE_INT_4:
2264       params[3] = ((GLint *) p)[3];
2265    case TYPE_INT_3:
2266       params[2] = ((GLint *) p)[2];
2267    case TYPE_INT_2:
2268    case TYPE_ENUM_2:
2269       params[1] = ((GLint *) p)[1];
2270    case TYPE_INT:
2271    case TYPE_ENUM:
2272       params[0] = ((GLint *) p)[0];
2273       break;
2274
2275    case TYPE_INT_N:
2276       for (i = 0; i < v.value_int_n.n; i++)
2277          params[i] = v.value_int_n.ints[i];
2278       break;
2279
2280    case TYPE_INT64:
2281       params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
2282       break;
2283
2284    case TYPE_BOOLEAN:
2285       params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
2286       break;
2287
2288    case TYPE_MATRIX:
2289       m = *(GLmatrix **) p;
2290       for (i = 0; i < 16; i++)
2291          params[i] = FLOAT_TO_INT(m->m[i]);
2292       break;
2293
2294    case TYPE_MATRIX_T:
2295       m = *(GLmatrix **) p;
2296       for (i = 0; i < 16; i++)
2297          params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
2298       break;
2299
2300    case TYPE_BIT_0:
2301    case TYPE_BIT_1:
2302    case TYPE_BIT_2:
2303    case TYPE_BIT_3:
2304    case TYPE_BIT_4:
2305    case TYPE_BIT_5:
2306    case TYPE_BIT_6:
2307    case TYPE_BIT_7:
2308       shift = d->type - TYPE_BIT_0;
2309       params[0] = (*(GLbitfield *) p >> shift) & 1;
2310       break;
2311    }
2312 }
2313
2314 #if FEATURE_ARB_sync
2315 void GLAPIENTRY
2316 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
2317 {
2318    const struct value_desc *d;
2319    union value v;
2320    GLmatrix *m;
2321    int shift, i;
2322    void *p;
2323    GET_CURRENT_CONTEXT(ctx);
2324
2325    ASSERT_OUTSIDE_BEGIN_END(ctx);
2326
2327    d = find_value("glGetInteger64v", pname, &p, &v);
2328    switch (d->type) {
2329    case TYPE_INVALID:
2330       break;
2331    case TYPE_CONST:
2332       params[0] = d->offset;
2333       break;
2334
2335    case TYPE_FLOAT_4:
2336       params[3] = IROUND64(((GLfloat *) p)[3]);
2337    case TYPE_FLOAT_3:
2338       params[2] = IROUND64(((GLfloat *) p)[2]);
2339    case TYPE_FLOAT_2:
2340       params[1] = IROUND64(((GLfloat *) p)[1]);
2341    case TYPE_FLOAT:
2342       params[0] = IROUND64(((GLfloat *) p)[0]);
2343       break;
2344
2345    case TYPE_FLOATN_4:
2346       params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
2347    case TYPE_FLOATN_3:
2348       params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
2349    case TYPE_FLOATN_2:
2350       params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
2351    case TYPE_FLOATN:
2352       params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
2353       break;
2354
2355    case TYPE_DOUBLEN:
2356       params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
2357       break;
2358
2359    case TYPE_INT_4:
2360       params[3] = ((GLint *) p)[3];
2361    case TYPE_INT_3:
2362       params[2] = ((GLint *) p)[2];
2363    case TYPE_INT_2:
2364    case TYPE_ENUM_2:
2365       params[1] = ((GLint *) p)[1];
2366    case TYPE_INT:
2367    case TYPE_ENUM:
2368       params[0] = ((GLint *) p)[0];
2369       break;
2370
2371    case TYPE_INT_N:
2372       for (i = 0; i < v.value_int_n.n; i++)
2373          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2374       break;
2375
2376    case TYPE_INT64:
2377       params[0] = ((GLint64 *) p)[0];
2378       break;
2379
2380    case TYPE_BOOLEAN:
2381       params[0] = ((GLboolean*) p)[0];
2382       break;
2383
2384    case TYPE_MATRIX:
2385       m = *(GLmatrix **) p;
2386       for (i = 0; i < 16; i++)
2387          params[i] = FLOAT_TO_INT64(m->m[i]);
2388       break;
2389
2390    case TYPE_MATRIX_T:
2391       m = *(GLmatrix **) p;
2392       for (i = 0; i < 16; i++)
2393          params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
2394       break;
2395
2396    case TYPE_BIT_0:
2397    case TYPE_BIT_1:
2398    case TYPE_BIT_2:
2399    case TYPE_BIT_3:
2400    case TYPE_BIT_4:
2401    case TYPE_BIT_5:
2402    case TYPE_BIT_6:
2403    case TYPE_BIT_7:
2404       shift = d->type - TYPE_BIT_0;
2405       params[0] = (*(GLbitfield *) p >> shift) & 1;
2406       break;
2407    }
2408 }
2409 #endif /* FEATURE_ARB_sync */
2410
2411 void GLAPIENTRY
2412 _mesa_GetDoublev(GLenum pname, GLdouble *params)
2413 {
2414    const struct value_desc *d;
2415    union value v;
2416    GLmatrix *m;
2417    int shift, i;
2418    void *p;
2419    GET_CURRENT_CONTEXT(ctx);
2420
2421    ASSERT_OUTSIDE_BEGIN_END(ctx);
2422
2423    d = find_value("glGetDoublev", pname, &p, &v);
2424    switch (d->type) {
2425    case TYPE_INVALID:
2426       break;
2427    case TYPE_CONST:
2428       params[0] = d->offset;
2429       break;
2430
2431    case TYPE_FLOAT_4:
2432    case TYPE_FLOATN_4:
2433       params[3] = ((GLfloat *) p)[3];
2434    case TYPE_FLOAT_3:
2435    case TYPE_FLOATN_3:
2436       params[2] = ((GLfloat *) p)[2];
2437    case TYPE_FLOAT_2:
2438    case TYPE_FLOATN_2:
2439       params[1] = ((GLfloat *) p)[1];
2440    case TYPE_FLOAT:
2441    case TYPE_FLOATN:
2442       params[0] = ((GLfloat *) p)[0];
2443       break;
2444
2445    case TYPE_DOUBLEN:
2446       params[0] = ((GLdouble *) p)[0];
2447       break;
2448
2449    case TYPE_INT_4:
2450       params[3] = ((GLint *) p)[3];
2451    case TYPE_INT_3:
2452       params[2] = ((GLint *) p)[2];
2453    case TYPE_INT_2:
2454    case TYPE_ENUM_2:
2455       params[1] = ((GLint *) p)[1];
2456    case TYPE_INT:
2457    case TYPE_ENUM:
2458       params[0] = ((GLint *) p)[0];
2459       break;
2460
2461    case TYPE_INT_N:
2462       for (i = 0; i < v.value_int_n.n; i++)
2463          params[i] = v.value_int_n.ints[i];
2464       break;
2465
2466    case TYPE_INT64:
2467       params[0] = ((GLint64 *) p)[0];
2468       break;
2469
2470    case TYPE_BOOLEAN:
2471       params[0] = *(GLboolean*) p;
2472       break;
2473
2474    case TYPE_MATRIX:
2475       m = *(GLmatrix **) p;
2476       for (i = 0; i < 16; i++)
2477          params[i] = m->m[i];
2478       break;
2479
2480    case TYPE_MATRIX_T:
2481       m = *(GLmatrix **) p;
2482       for (i = 0; i < 16; i++)
2483          params[i] = m->m[transpose[i]];
2484       break;
2485
2486    case TYPE_BIT_0:
2487    case TYPE_BIT_1:
2488    case TYPE_BIT_2:
2489    case TYPE_BIT_3:
2490    case TYPE_BIT_4:
2491    case TYPE_BIT_5:
2492    case TYPE_BIT_6:
2493    case TYPE_BIT_7:
2494       shift = d->type - TYPE_BIT_0;
2495       params[0] = (*(GLbitfield *) p >> shift) & 1;
2496       break;
2497    }
2498 }
2499
2500 static enum value_type
2501 find_value_indexed(const char *func, GLenum pname, int index, union value *v)
2502 {
2503    GET_CURRENT_CONTEXT(ctx);
2504
2505    switch (pname) {
2506
2507    case GL_BLEND:
2508       if (index >= ctx->Const.MaxDrawBuffers)
2509          goto invalid_value;
2510       if (!ctx->Extensions.EXT_draw_buffers2)
2511          goto invalid_enum;
2512       v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
2513       return TYPE_INT;
2514
2515    case GL_BLEND_SRC:
2516       /* fall-through */
2517    case GL_BLEND_SRC_RGB:
2518       if (index >= ctx->Const.MaxDrawBuffers)
2519          goto invalid_value;
2520       if (!ctx->Extensions.ARB_draw_buffers_blend)
2521          goto invalid_enum;
2522       v->value_int = ctx->Color.Blend[index].SrcRGB;
2523       return TYPE_INT;
2524    case GL_BLEND_SRC_ALPHA:
2525       if (index >= ctx->Const.MaxDrawBuffers)
2526          goto invalid_value;
2527       if (!ctx->Extensions.ARB_draw_buffers_blend)
2528          goto invalid_enum;
2529       v->value_int = ctx->Color.Blend[index].SrcA;
2530       return TYPE_INT;
2531    case GL_BLEND_DST:
2532       /* fall-through */
2533    case GL_BLEND_DST_RGB:
2534       if (index >= ctx->Const.MaxDrawBuffers)
2535          goto invalid_value;
2536       if (!ctx->Extensions.ARB_draw_buffers_blend)
2537          goto invalid_enum;
2538       v->value_int = ctx->Color.Blend[index].DstRGB;
2539       return TYPE_INT;
2540    case GL_BLEND_DST_ALPHA:
2541       if (index >= ctx->Const.MaxDrawBuffers)
2542          goto invalid_value;
2543       if (!ctx->Extensions.ARB_draw_buffers_blend)
2544          goto invalid_enum;
2545       v->value_int = ctx->Color.Blend[index].DstA;
2546       return TYPE_INT;
2547    case GL_BLEND_EQUATION_RGB:
2548       if (index >= ctx->Const.MaxDrawBuffers)
2549          goto invalid_value;
2550       if (!ctx->Extensions.ARB_draw_buffers_blend)
2551          goto invalid_enum;
2552       v->value_int = ctx->Color.Blend[index].EquationRGB;
2553       return TYPE_INT;
2554    case GL_BLEND_EQUATION_ALPHA:
2555       if (index >= ctx->Const.MaxDrawBuffers)
2556          goto invalid_value;
2557       if (!ctx->Extensions.ARB_draw_buffers_blend)
2558          goto invalid_enum;
2559       v->value_int = ctx->Color.Blend[index].EquationA;
2560       return TYPE_INT;
2561
2562    case GL_COLOR_WRITEMASK:
2563       if (index >= ctx->Const.MaxDrawBuffers)
2564          goto invalid_value;
2565       if (!ctx->Extensions.EXT_draw_buffers2)
2566          goto invalid_enum;
2567       v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
2568       v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
2569       v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
2570       v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
2571       return TYPE_INT_4;
2572
2573    case GL_TRANSFORM_FEEDBACK_BUFFER_START:
2574       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2575          goto invalid_value;
2576       if (!ctx->Extensions.EXT_transform_feedback)
2577          goto invalid_enum;
2578       v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
2579       return TYPE_INT64;
2580
2581    case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
2582       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2583          goto invalid_value;
2584       if (!ctx->Extensions.EXT_transform_feedback)
2585          goto invalid_enum;
2586       v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];
2587       return TYPE_INT64;
2588
2589    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
2590       if (index >= ctx->Const.MaxTransformFeedbackBuffers)
2591          goto invalid_value;
2592       if (!ctx->Extensions.EXT_transform_feedback)
2593          goto invalid_enum;
2594       v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
2595       return TYPE_INT;
2596
2597    case GL_UNIFORM_BUFFER_BINDING:
2598       if (index >= ctx->Const.MaxUniformBufferBindings)
2599          goto invalid_value;
2600       if (!ctx->Extensions.ARB_uniform_buffer_object)
2601          goto invalid_enum;
2602       v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
2603       return TYPE_INT;
2604
2605    case GL_UNIFORM_BUFFER_START:
2606       if (index >= ctx->Const.MaxUniformBufferBindings)
2607          goto invalid_value;
2608       if (!ctx->Extensions.ARB_uniform_buffer_object)
2609          goto invalid_enum;
2610       v->value_int = ctx->UniformBufferBindings[index].Offset;
2611       return TYPE_INT;
2612
2613    case GL_UNIFORM_BUFFER_SIZE:
2614       if (index >= ctx->Const.MaxUniformBufferBindings)
2615          goto invalid_value;
2616       if (!ctx->Extensions.ARB_uniform_buffer_object)
2617          goto invalid_enum;
2618       v->value_int = ctx->UniformBufferBindings[index].Size;
2619       return TYPE_INT;
2620    }
2621
2622  invalid_enum:
2623    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
2624                _mesa_lookup_enum_by_nr(pname));
2625    return TYPE_INVALID;
2626  invalid_value:
2627    _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
2628                _mesa_lookup_enum_by_nr(pname));
2629    return TYPE_INVALID;
2630 }
2631
2632 void GLAPIENTRY
2633 _mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
2634 {
2635    union value v;
2636    enum value_type type =
2637       find_value_indexed("glGetBooleanIndexedv", pname, index, &v);
2638
2639    switch (type) {
2640    case TYPE_INT:
2641       params[0] = INT_TO_BOOLEAN(v.value_int);
2642       break;
2643    case TYPE_INT_4:
2644       params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2645       params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2646       params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2647       params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2648       break;
2649    case TYPE_INT64:
2650       params[0] = INT64_TO_BOOLEAN(v.value_int);
2651       break;
2652    default:
2653       ; /* nothing - GL error was recorded */
2654    }
2655 }
2656
2657 void GLAPIENTRY
2658 _mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
2659 {
2660    union value v;
2661    enum value_type type =
2662       find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
2663
2664    switch (type) {
2665    case TYPE_INT:
2666       params[0] = v.value_int;
2667       break;
2668    case TYPE_INT_4:
2669       params[0] = v.value_int_4[0];
2670       params[1] = v.value_int_4[1];
2671       params[2] = v.value_int_4[2];
2672       params[3] = v.value_int_4[3];
2673       break;
2674    case TYPE_INT64:
2675       params[0] = INT64_TO_INT(v.value_int);
2676       break;
2677    default:
2678       ; /* nothing - GL error was recorded */
2679    }
2680 }
2681
2682 #if FEATURE_ARB_sync
2683 void GLAPIENTRY
2684 _mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )
2685 {
2686    union value v;
2687    enum value_type type =
2688       find_value_indexed("glGetIntegerIndexedv", pname, index, &v);
2689
2690    switch (type) {
2691    case TYPE_INT:
2692       params[0] = v.value_int;
2693       break;
2694    case TYPE_INT_4:
2695       params[0] = v.value_int_4[0];
2696       params[1] = v.value_int_4[1];
2697       params[2] = v.value_int_4[2];
2698       params[3] = v.value_int_4[3];
2699       break;
2700    case TYPE_INT64:
2701       params[0] = v.value_int;
2702       break;
2703    default:
2704       ; /* nothing - GL error was recorded */
2705    }
2706 }
2707 #endif /* FEATURE_ARB_sync */
2708
2709 #if FEATURE_ES1
2710 void GLAPIENTRY
2711 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2712 {
2713    const struct value_desc *d;
2714    union value v;
2715    GLmatrix *m;
2716    int shift, i;
2717    void *p;
2718
2719    d = find_value("glGetDoublev", pname, &p, &v);
2720    switch (d->type) {
2721    case TYPE_INVALID:
2722       break;
2723    case TYPE_CONST:
2724       params[0] = INT_TO_FIXED(d->offset);
2725       break;
2726
2727    case TYPE_FLOAT_4:
2728    case TYPE_FLOATN_4:
2729       params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2730    case TYPE_FLOAT_3:
2731    case TYPE_FLOATN_3:
2732       params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2733    case TYPE_FLOAT_2:
2734    case TYPE_FLOATN_2:
2735       params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2736    case TYPE_FLOAT:
2737    case TYPE_FLOATN:
2738       params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2739       break;
2740
2741    case TYPE_DOUBLEN:
2742       params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2743       break;
2744
2745    case TYPE_INT_4:
2746       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2747    case TYPE_INT_3:
2748       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2749    case TYPE_INT_2:
2750    case TYPE_ENUM_2:
2751       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2752    case TYPE_INT:
2753    case TYPE_ENUM:
2754       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2755       break;
2756
2757    case TYPE_INT_N:
2758       for (i = 0; i < v.value_int_n.n; i++)
2759          params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2760       break;
2761
2762    case TYPE_INT64:
2763       params[0] = ((GLint64 *) p)[0];
2764       break;
2765
2766    case TYPE_BOOLEAN:
2767       params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2768       break;
2769
2770    case TYPE_MATRIX:
2771       m = *(GLmatrix **) p;
2772       for (i = 0; i < 16; i++)
2773          params[i] = FLOAT_TO_FIXED(m->m[i]);
2774       break;
2775
2776    case TYPE_MATRIX_T:
2777       m = *(GLmatrix **) p;
2778       for (i = 0; i < 16; i++)
2779          params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2780       break;
2781
2782    case TYPE_BIT_0:
2783    case TYPE_BIT_1:
2784    case TYPE_BIT_2:
2785    case TYPE_BIT_3:
2786    case TYPE_BIT_4:
2787    case TYPE_BIT_5:
2788    case TYPE_BIT_6:
2789    case TYPE_BIT_7:
2790       shift = d->type - TYPE_BIT_0;
2791       params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2792       break;
2793    }
2794 }
2795 #endif