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 "mtypes.h"
  33 #include "state.h"
  34 #include "texcompress.h"
  35 #include "framebuffer.h"
  36
  37 /* This is a table driven implemetation of the glGet*v() functions.
  38  * The basic idea is that most getters just look up an int somewhere
  39  * in GLcontext and then convert it to a bool or float according to
  40  * which of glGetIntegerv() glGetBooleanv() etc is being called.
  41  * Instead of generating code to do this, we can just record the enum
  42  * value and the offset into GLcontext in an array of structs.  Then
  43  * in glGet*(), we lookup the struct for the enum in question, and use
  44  * the offset to get the int we need.
  45  *
  46  * Sometimes we need to look up a float, a boolean, a bit in a
  47  * bitfield, a matrix or other types instead, so we need to track the
  48  * type of the value in GLcontext.  And sometimes the value isn't in
  49  * GLcontext but in the drawbuffer, the array object, current texture
  50  * unit, or maybe it's a computed value.  So we need to also track
  51  * where or how to find the value.  Finally, we sometimes need to
  52  * check that one of a number of extensions are enabled, the GL
  53  * version or flush or call _mesa_update_state().  This is done by
  54  * attaching optional extra information to the value description
  55  * struct, it's sort of like an array of opcodes that describe extra
  56  * checks or actions.
  57  *
  58  * Putting all this together we end up with struct value_desc below,
  59  * and with a couple of macros to help, the table of struct value_desc
  60  * is about as concise as the specification in the old python script.
  61  */
  62
  63 #undef CONST
  64
  65 #define FLOAT_TO_BOOLEAN(X)   ( (X) ? GL_TRUE : GL_FALSE )
  66 #define FLOAT_TO_FIXED(F)     ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
  67                                 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
  68                                 (GLint) ((F) * 65536.0f) )
  69
  70 #define INT_TO_BOOLEAN(I)     ( (I) ? GL_TRUE : GL_FALSE )
  71 #define INT_TO_FIXED(I)       ( ((I) > SHRT_MAX) ? INT_MAX : \
  72                                 ((I) < SHRT_MIN) ? INT_MIN : \
  73                                 (GLint) ((I) * 65536) )
  74
  75 #define INT64_TO_BOOLEAN(I)   ( (I) ? GL_TRUE : GL_FALSE )
  76 #define INT64_TO_INT(I)       ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
  77
  78 #define BOOLEAN_TO_INT(B)     ( (GLint) (B) )
  79 #define BOOLEAN_TO_INT64(B)   ( (GLint64) (B) )
  80 #define BOOLEAN_TO_FLOAT(B)   ( (B) ? 1.0F : 0.0F )
  81 #define BOOLEAN_TO_FIXED(B)   ( (GLint) ((B) ? 1 : 0) << 16 )
  82
  83 #define ENUM_TO_INT64(E)      ( (GLint64) (E) )
  84 #define ENUM_TO_FIXED(E)      (E)
  85
  86 enum value_type {
  87    TYPE_INVALID,
  88    TYPE_API_MASK,
  89    TYPE_INT,
  90    TYPE_INT_2,
  91    TYPE_INT_3,
  92    TYPE_INT_4,
  93    TYPE_INT_N,
  94    TYPE_INT64,
  95    TYPE_ENUM,
  96    TYPE_ENUM_2,
  97    TYPE_BOOLEAN,
  98    TYPE_BIT_0,
  99    TYPE_BIT_1,
 100    TYPE_BIT_2,
 101    TYPE_BIT_3,
 102    TYPE_BIT_4,
 103    TYPE_BIT_5,
 104    TYPE_FLOAT,
 105    TYPE_FLOAT_2,
 106    TYPE_FLOAT_3,
 107    TYPE_FLOAT_4,
 108    TYPE_FLOATN,
 109    TYPE_FLOATN_2,
 110    TYPE_FLOATN_3,
 111    TYPE_FLOATN_4,
 112    TYPE_DOUBLEN,
 113    TYPE_MATRIX,
 114    TYPE_MATRIX_T,
 115    TYPE_CONST
 116 };
 117
 118 enum value_location {
 119    LOC_BUFFER,
 120    LOC_CONTEXT,
 121    LOC_ARRAY,
 122    LOC_TEXUNIT,
 123    LOC_CUSTOM
 124 };
 125
 126 enum value_extra {
 127    EXTRA_END = 0x8000,
 128    EXTRA_VERSION_30,
 129    EXTRA_VERSION_31,
 130    EXTRA_VERSION_32,
 131    EXTRA_NEW_BUFFERS,
 132    EXTRA_VALID_DRAW_BUFFER,
 133    EXTRA_VALID_TEXTURE_UNIT,
 134    EXTRA_FLUSH_CURRENT,
 135 };
 136
 137 struct value_desc {
 138    GLenum pname;
 139    enum value_location location : 8;
 140    enum value_type type : 8;
 141    int offset;
 142    const int *extra;
 143 };
 144
 145 union value {
 146    GLfloat value_float;
 147    GLfloat value_float_4[4];
 148    GLmatrix *value_matrix;
 149    GLint value_int;
 150    GLint value_int_4[4];
 151    GLint64 value_int64;
 152    GLenum value_enum;
 153
 154    /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
 155    struct {
 156       GLint n, ints[100];
 157    } value_int_n;
 158    GLboolean value_bool;
 159 };
 160
 161 #define BUFFER_FIELD(field, type) \
 162    LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
 163 #define CONTEXT_FIELD(field, type) \
 164    LOC_CONTEXT, type, offsetof(GLcontext, field)
 165 #define ARRAY_FIELD(field, type) \
 166    LOC_ARRAY, type, offsetof(struct gl_array_object, field)
 167 #define CONST(value) \
 168    LOC_CONTEXT, TYPE_CONST, value
 169
 170 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
 171 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
 172
 173 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
 174 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
 175 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
 176 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
 177 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
 178 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
 179 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
 180 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
 181 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
 182 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
 183 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
 184 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
 185 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
 186 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
 187 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
 188 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
 189 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
 190 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
 191
 192 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
 193 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
 194 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
 195
 196 #define EXT(f)                                  \
 197    offsetof(struct gl_extensions, f)
 198
 199 #define EXTRA_EXT(e)                            \
 200    static const int extra_##e[] = {             \
 201       EXT(e), EXTRA_END                         \
 202    }
 203
 204 #define EXTRA_EXT2(e1, e2)                      \
 205    static const int extra_##e1##_##e2[] = {     \
 206       EXT(e1), EXT(e2), EXTRA_END               \
 207    }
 208
 209 /* The 'extra' mechanism is a way to specify extra checks (such as
 210  * extensions or specific gl versions) or actions (flush current, new
 211  * buffers) that we need to do before looking up an enum.  We need to
 212  * declare them all up front so we can refer to them in the value_desc
 213  * structs below. */
 214
 215 static const int extra_new_buffers[] = {
 216    EXTRA_NEW_BUFFERS,
 217    EXTRA_END
 218 };
 219
 220 static const int extra_valid_draw_buffer[] = {
 221    EXTRA_VALID_DRAW_BUFFER,
 222    EXTRA_END
 223 };
 224
 225 static const int extra_valid_texture_unit[] = {
 226    EXTRA_VALID_TEXTURE_UNIT,
 227    EXTRA_END
 228 };
 229
 230 static const int extra_flush_current_valid_texture_unit[] = {
 231    EXTRA_FLUSH_CURRENT,
 232    EXTRA_VALID_TEXTURE_UNIT,
 233    EXTRA_END
 234 };
 235
 236 static const int extra_flush_current[] = {
 237    EXTRA_FLUSH_CURRENT,
 238    EXTRA_END
 239 };
 240
 241 static const int extra_new_buffers_OES_read_format[] = {
 242    EXTRA_NEW_BUFFERS,
 243    EXT(OES_read_format),
 244    EXTRA_END
 245 };
 246
 247 static const int extra_EXT_secondary_color_flush_current[] = {
 248    EXT(EXT_secondary_color),
 249    EXTRA_FLUSH_CURRENT,
 250    EXTRA_END
 251 };
 252
 253 static const int extra_EXT_fog_coord_flush_current[] = {
 254    EXT(EXT_fog_coord),
 255    EXTRA_FLUSH_CURRENT,
 256    EXTRA_END
 257 };
 258
 259 EXTRA_EXT(ARB_multitexture);
 260 EXTRA_EXT(ARB_texture_cube_map);
 261 EXTRA_EXT(MESA_texture_array);
 262 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
 263 EXTRA_EXT(EXT_secondary_color);
 264 EXTRA_EXT(EXT_fog_coord);
 265 EXTRA_EXT(EXT_texture_lod_bias);
 266 EXTRA_EXT(EXT_texture_filter_anisotropic);
 267 EXTRA_EXT(IBM_rasterpos_clip);
 268 EXTRA_EXT(NV_point_sprite);
 269 EXTRA_EXT(SGIS_generate_mipmap);
 270 EXTRA_EXT(NV_vertex_program);
 271 EXTRA_EXT(NV_fragment_program);
 272 EXTRA_EXT(NV_texture_rectangle);
 273 EXTRA_EXT(EXT_stencil_two_side);
 274 EXTRA_EXT(NV_light_max_exponent);
 275 EXTRA_EXT(EXT_convolution);
 276 EXTRA_EXT(EXT_histogram);
 277 EXTRA_EXT(SGI_color_table);
 278 EXTRA_EXT(SGI_texture_color_table);
 279 EXTRA_EXT(EXT_depth_bounds_test);
 280 EXTRA_EXT(ARB_depth_clamp);
 281 EXTRA_EXT(ATI_fragment_shader);
 282 EXTRA_EXT(EXT_framebuffer_blit);
 283 EXTRA_EXT(ARB_shader_objects);
 284 EXTRA_EXT(EXT_provoking_vertex);
 285 EXTRA_EXT(ARB_fragment_shader);
 286 EXTRA_EXT(ARB_fragment_program);
 287 EXTRA_EXT(ARB_framebuffer_object);
 288 EXTRA_EXT(EXT_framebuffer_object);
 289 EXTRA_EXT(APPLE_vertex_array_object);
 290 EXTRA_EXT(ARB_seamless_cube_map);
 291 EXTRA_EXT(EXT_compiled_vertex_array);
 292 EXTRA_EXT(ARB_sync);
 293 EXTRA_EXT(ARB_vertex_shader);
 294 EXTRA_EXT(EXT_transform_feedback);
 295 EXTRA_EXT(ARB_transform_feedback2);
 296 EXTRA_EXT(EXT_pixel_buffer_object);
 297 EXTRA_EXT(ARB_vertex_program);
 298 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
 299 EXTRA_EXT2(ARB_fragment_program, NV_fragment_program);
 300 EXTRA_EXT2(ARB_vertex_program, NV_vertex_program);
 301 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
 302 EXTRA_EXT(ARB_vertex_buffer_object);
 303
 304 static const int
 305 extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 306    EXT(ARB_vertex_program),
 307    EXT(ARB_fragment_program),
 308    EXT(NV_vertex_program),
 309    EXTRA_END
 310 };
 311
 312 static const int
 313 extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program[] = {
 314    EXT(NV_vertex_program),
 315    EXT(ARB_vertex_program),
 316    EXT(ARB_fragment_program),
 317    EXT(NV_vertex_program),
 318    EXTRA_END
 319 };
 320
 321 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
 322 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
 323 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
 324
 325 #define API_OPENGL_BIT (1 << API_OPENGL)
 326 #define API_OPENGLES_BIT (1 << API_OPENGLES)
 327 #define API_OPENGLES2_BIT (1 << API_OPENGLES2)
 328
 329 /* This is the big table describing all the enums we accept in
 330  * glGet*v().  The table is partitioned into six parts: enums
 331  * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
 332  * between OpenGL and GLES, enums exclusive to GLES, etc for the
 333  * remaining combinations.  When we add the enums to the hash table in
 334  * _mesa_init_get_hash(), we only add the enums for the API we're
 335  * instantiating and the different sections are guarded by #if
 336  * FEATURE_GL etc to make sure we only compile in the enums we may
 337  * need. */
 338
 339 static const struct value_desc values[] = {
 340    /* Enums shared between OpenGL, GLES1 and GLES2 */
 341    { 0, 0, TYPE_API_MASK,
 342      API_OPENGL_BIT | API_OPENGLES_BIT | API_OPENGLES2_BIT},
 343    { GL_ALPHA_BITS, BUFFER_INT(Visual.alphaBits), extra_new_buffers },
 344    { GL_BLEND, CONTEXT_BIT0(Color.BlendEnabled) },
 345    { GL_BLEND_SRC, CONTEXT_ENUM(Color.BlendSrcRGB) },
 346    { GL_BLUE_BITS, BUFFER_INT(Visual.blueBits), extra_new_buffers },
 347    { GL_COLOR_CLEAR_VALUE, CONTEXT_FIELD(Color.ClearColor[0], TYPE_FLOATN_4) },
 348    { GL_COLOR_WRITEMASK, LOC_CUSTOM, TYPE_INT_4, 0, },
 349    { GL_CULL_FACE, CONTEXT_BOOL(Polygon.CullFlag) },
 350    { GL_CULL_FACE_MODE, CONTEXT_ENUM(Polygon.CullFaceMode) },
 351    { GL_DEPTH_BITS, BUFFER_INT(Visual.depthBits) },
 352    { GL_DEPTH_CLEAR_VALUE, CONTEXT_FIELD(Depth.Clear, TYPE_DOUBLEN) },
 353    { GL_DEPTH_FUNC, CONTEXT_ENUM(Depth.Func) },
 354    { GL_DEPTH_RANGE, CONTEXT_FIELD(Viewport.Near, TYPE_FLOATN_2) },
 355    { GL_DEPTH_TEST, CONTEXT_BOOL(Depth.Test) },
 356    { GL_DEPTH_WRITEMASK, CONTEXT_BOOL(Depth.Mask) },
 357    { GL_DITHER, CONTEXT_BOOL(Color.DitherFlag) },
 358    { GL_FRONT_FACE, CONTEXT_ENUM(Polygon.FrontFace) },
 359    { GL_GREEN_BITS, BUFFER_INT(Visual.greenBits), extra_new_buffers },
 360    { GL_LINE_WIDTH, CONTEXT_FLOAT(Line.Width) },
 361    { GL_ALIASED_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidth) },
 362    { GL_MAX_ELEMENTS_VERTICES, CONTEXT_INT(Const.MaxArrayLockSize) },
 363    { GL_MAX_ELEMENTS_INDICES, CONTEXT_INT(Const.MaxArrayLockSize) },
 364    { GL_MAX_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 365      offsetof(GLcontext, Const.MaxTextureLevels) },
 366    { GL_MAX_VIEWPORT_DIMS, CONTEXT_INT2(Const.MaxViewportWidth) },
 367    { GL_PACK_ALIGNMENT, CONTEXT_INT(Pack.Alignment) },
 368    { GL_ALIASED_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSize) },
 369    { GL_POLYGON_OFFSET_FACTOR, CONTEXT_FLOAT(Polygon.OffsetFactor ) },
 370    { GL_POLYGON_OFFSET_UNITS, CONTEXT_FLOAT(Polygon.OffsetUnits ) },
 371    { GL_POLYGON_OFFSET_FILL, CONTEXT_BOOL(Polygon.OffsetFill) },
 372    { GL_RED_BITS, BUFFER_INT(Visual.redBits), extra_new_buffers },
 373    { GL_SCISSOR_BOX, LOC_CUSTOM, TYPE_INT_4, 0 },
 374    { GL_SCISSOR_TEST, CONTEXT_BOOL(Scissor.Enabled) },
 375    { GL_STENCIL_BITS, BUFFER_INT(Visual.stencilBits) },
 376    { GL_STENCIL_CLEAR_VALUE, CONTEXT_INT(Stencil.Clear) },
 377    { GL_STENCIL_FAIL, LOC_CUSTOM, TYPE_ENUM },
 378    { GL_STENCIL_FUNC, LOC_CUSTOM, TYPE_ENUM },
 379    { GL_STENCIL_PASS_DEPTH_FAIL, LOC_CUSTOM, TYPE_ENUM },
 380    { GL_STENCIL_PASS_DEPTH_PASS, LOC_CUSTOM, TYPE_ENUM },
 381    { GL_STENCIL_REF, LOC_CUSTOM, TYPE_INT },
 382    { GL_STENCIL_TEST, CONTEXT_BOOL(Stencil.Enabled) },
 383    { GL_STENCIL_VALUE_MASK, LOC_CUSTOM, TYPE_INT },
 384    { GL_STENCIL_WRITEMASK, LOC_CUSTOM, TYPE_INT },
 385    { GL_SUBPIXEL_BITS, CONTEXT_INT(Const.SubPixelBits) },
 386    { GL_TEXTURE_BINDING_2D, LOC_CUSTOM, TYPE_INT, TEXTURE_2D_INDEX },
 387    { GL_UNPACK_ALIGNMENT, CONTEXT_INT(Unpack.Alignment) },
 388    { GL_VIEWPORT, LOC_CUSTOM, TYPE_INT_4, 0 },
 389
 390    /* GL_ARB_multitexture */
 391    { GL_ACTIVE_TEXTURE_ARB,
 392      LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },
 393
 394    /* Note that all the OES_* extensions require that the Mesa "struct
 395     * gl_extensions" include a member with the name of the extension.
 396     * That structure does not yet include OES extensions (and we're
 397     * not sure whether it will).  If it does, all the OES_*
 398     * extensions below should mark the dependency. */
 399
 400    /* GL_ARB_texture_cube_map */
 401    { GL_TEXTURE_BINDING_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_INT,
 402      TEXTURE_CUBE_INDEX, extra_ARB_texture_cube_map },
 403    { GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, LOC_CUSTOM, TYPE_INT,
 404      offsetof(GLcontext, Const.MaxCubeTextureLevels),
 405      extra_ARB_texture_cube_map }, /* XXX: OES_texture_cube_map */
 406
 407    /* XXX: OES_blend_subtract */
 408    { GL_BLEND_SRC_RGB_EXT, CONTEXT_ENUM(Color.BlendSrcRGB) },
 409    { GL_BLEND_DST_RGB_EXT, CONTEXT_ENUM(Color.BlendDstRGB) },
 410    { GL_BLEND_SRC_ALPHA_EXT, CONTEXT_ENUM(Color.BlendSrcA) },
 411    { GL_BLEND_DST_ALPHA_EXT, CONTEXT_ENUM(Color.BlendDstA) },
 412
 413    /* GL_BLEND_EQUATION_RGB, which is what we're really after, is
 414     * defined identically to GL_BLEND_EQUATION. */
 415    { GL_BLEND_EQUATION, CONTEXT_ENUM(Color.BlendEquationRGB) },
 416    { GL_BLEND_EQUATION_ALPHA_EXT, CONTEXT_ENUM(Color.BlendEquationA) },
 417
 418    /* GL_ARB_texture_compression */
 419    { GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT, 0 },
 420    { GL_COMPRESSED_TEXTURE_FORMATS_ARB, LOC_CUSTOM, TYPE_INT_N, 0 },
 421
 422    /* GL_ARB_multisample */
 423    { GL_SAMPLE_ALPHA_TO_COVERAGE_ARB,
 424      CONTEXT_BOOL(Multisample.SampleAlphaToCoverage) },
 425    { GL_SAMPLE_COVERAGE_ARB, CONTEXT_BOOL(Multisample.SampleCoverage) },
 426    { GL_SAMPLE_COVERAGE_VALUE_ARB,
 427      CONTEXT_FLOAT(Multisample.SampleCoverageValue) },
 428    { GL_SAMPLE_COVERAGE_INVERT_ARB,
 429      CONTEXT_BOOL(Multisample.SampleCoverageInvert) },
 430    { GL_SAMPLE_BUFFERS_ARB, BUFFER_INT(Visual.sampleBuffers) },
 431    { GL_SAMPLES_ARB, BUFFER_INT(Visual.samples) },
 432
 433    /* GL_SGIS_generate_mipmap */
 434    { GL_GENERATE_MIPMAP_HINT_SGIS, CONTEXT_ENUM(Hint.GenerateMipmap),
 435      extra_SGIS_generate_mipmap },
 436
 437    /* GL_ARB_vertex_buffer_object */
 438    { GL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0 },
 439
 440    /* GL_ARB_vertex_buffer_object */
 441    /* GL_WEIGHT_ARRAY_BUFFER_BINDING_ARB - not supported */
 442    { GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0,
 443      extra_ARB_vertex_buffer_object },
 444
 445    /* GL_OES_read_format */
 446    { GL_IMPLEMENTATION_COLOR_READ_TYPE_OES, LOC_CUSTOM, TYPE_INT, 0,
 447      extra_new_buffers_OES_read_format },
 448    { GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES, LOC_CUSTOM, TYPE_INT, 0,
 449      extra_new_buffers_OES_read_format },
 450
 451    /* GL_EXT_framebuffer_object */
 452    { GL_FRAMEBUFFER_BINDING_EXT, BUFFER_INT(Name),
 453      extra_EXT_framebuffer_object },
 454    { GL_RENDERBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
 455      extra_EXT_framebuffer_object },
 456    { GL_MAX_RENDERBUFFER_SIZE_EXT, CONTEXT_INT(Const.MaxRenderbufferSize),
 457      extra_EXT_framebuffer_object },
 458
 459    /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's
 460     * GLSL: */
 461    { GL_MAX_CLIP_PLANES, CONTEXT_INT(Const.MaxClipPlanes) },
 462
 463 #if FEATURE_GL || FEATURE_ES1
 464    /* Enums in OpenGL and GLES1 */
 465    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES_BIT },
 466    { GL_LIGHT0, CONTEXT_BOOL(Light.Light[0].Enabled) },
 467    { GL_LIGHT1, CONTEXT_BOOL(Light.Light[1].Enabled) },
 468    { GL_LIGHT2, CONTEXT_BOOL(Light.Light[2].Enabled) },
 469    { GL_LIGHT3, CONTEXT_BOOL(Light.Light[3].Enabled) },
 470    { GL_LIGHT4, CONTEXT_BOOL(Light.Light[4].Enabled) },
 471    { GL_LIGHT5, CONTEXT_BOOL(Light.Light[5].Enabled) },
 472    { GL_LIGHT6, CONTEXT_BOOL(Light.Light[6].Enabled) },
 473    { GL_LIGHT7, CONTEXT_BOOL(Light.Light[7].Enabled) },
 474    { GL_LIGHTING, CONTEXT_BOOL(Light.Enabled) },
 475    { GL_LIGHT_MODEL_AMBIENT,
 476      CONTEXT_FIELD(Light.Model.Ambient[0], TYPE_FLOATN_4) },
 477    { GL_LIGHT_MODEL_TWO_SIDE, CONTEXT_BOOL(Light.Model.TwoSide) },
 478    { GL_ALPHA_TEST, CONTEXT_BOOL(Color.AlphaEnabled) },
 479    { GL_ALPHA_TEST_FUNC, CONTEXT_ENUM(Color.AlphaFunc) },
 480    { GL_ALPHA_TEST_REF, CONTEXT_FIELD(Color.AlphaRef, TYPE_FLOATN) },
 481    { GL_BLEND_DST, CONTEXT_ENUM(Color.BlendDstRGB) },
 482    { GL_CLIP_PLANE0, CONTEXT_BIT0(Transform.ClipPlanesEnabled) },
 483    { GL_CLIP_PLANE1, CONTEXT_BIT1(Transform.ClipPlanesEnabled) },
 484    { GL_CLIP_PLANE2, CONTEXT_BIT2(Transform.ClipPlanesEnabled) },
 485    { GL_CLIP_PLANE3, CONTEXT_BIT3(Transform.ClipPlanesEnabled) },
 486    { GL_CLIP_PLANE4, CONTEXT_BIT4(Transform.ClipPlanesEnabled) },
 487    { GL_CLIP_PLANE5, CONTEXT_BIT5(Transform.ClipPlanesEnabled) },
 488    { GL_COLOR_MATERIAL, CONTEXT_BOOL(Light.ColorMaterialEnabled) },
 489    { GL_CURRENT_COLOR,
 490      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR0][0], TYPE_FLOATN_4),
 491      extra_flush_current },
 492    { GL_CURRENT_NORMAL,
 493      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_NORMAL][0], TYPE_FLOATN_3),
 494      extra_flush_current },
 495    { GL_CURRENT_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 496      extra_flush_current_valid_texture_unit },
 497    { GL_DISTANCE_ATTENUATION_EXT, CONTEXT_FLOAT3(Point.Params[0]) },
 498    { GL_FOG, CONTEXT_BOOL(Fog.Enabled) },
 499    { GL_FOG_COLOR, CONTEXT_FIELD(Fog.Color[0], TYPE_FLOATN_4) },
 500    { GL_FOG_DENSITY, CONTEXT_FLOAT(Fog.Density) },
 501    { GL_FOG_END, CONTEXT_FLOAT(Fog.End) },
 502    { GL_FOG_HINT, CONTEXT_ENUM(Hint.Fog) },
 503    { GL_FOG_MODE, CONTEXT_ENUM(Fog.Mode) },
 504    { GL_FOG_START, CONTEXT_FLOAT(Fog.Start) },
 505    { GL_LINE_SMOOTH, CONTEXT_BOOL(Line.SmoothFlag) },
 506    { GL_LINE_SMOOTH_HINT, CONTEXT_ENUM(Hint.LineSmooth) },
 507    { GL_LINE_WIDTH_RANGE, CONTEXT_FLOAT2(Const.MinLineWidthAA) },
 508    { GL_COLOR_LOGIC_OP, CONTEXT_BOOL(Color.ColorLogicOpEnabled) },
 509    { GL_LOGIC_OP_MODE, CONTEXT_ENUM(Color.LogicOp) },
 510    { GL_MATRIX_MODE, CONTEXT_ENUM(Transform.MatrixMode) },
 511    { GL_MAX_MODELVIEW_STACK_DEPTH, CONST(MAX_MODELVIEW_STACK_DEPTH) },
 512    { GL_MAX_PROJECTION_STACK_DEPTH, CONST(MAX_PROJECTION_STACK_DEPTH) },
 513    { GL_MAX_TEXTURE_STACK_DEPTH, CONST(MAX_TEXTURE_STACK_DEPTH), },
 514    { GL_MODELVIEW_MATRIX, CONTEXT_MATRIX(ModelviewMatrixStack.Top) },
 515    { GL_MODELVIEW_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 516      offsetof(GLcontext, ModelviewMatrixStack.Depth) },
 517    { GL_NORMALIZE, CONTEXT_BOOL(Transform.Normalize) },
 518    { GL_PACK_SKIP_IMAGES_EXT, CONTEXT_INT(Pack.SkipImages) },
 519    { GL_PERSPECTIVE_CORRECTION_HINT, CONTEXT_ENUM(Hint.PerspectiveCorrection) },
 520    { GL_POINT_SIZE, CONTEXT_FLOAT(Point.Size) },
 521    { GL_POINT_SIZE_RANGE, CONTEXT_FLOAT2(Const.MinPointSizeAA) },
 522    { GL_POINT_SMOOTH, CONTEXT_BOOL(Point.SmoothFlag) },
 523    { GL_POINT_SMOOTH_HINT, CONTEXT_ENUM(Hint.PointSmooth) },
 524    { GL_POINT_SIZE_MIN_EXT, CONTEXT_FLOAT(Point.MinSize) },
 525    { GL_POINT_SIZE_MAX_EXT, CONTEXT_FLOAT(Point.MaxSize) },
 526    { GL_POINT_FADE_THRESHOLD_SIZE_EXT, CONTEXT_FLOAT(Point.Threshold) },
 527    { GL_PROJECTION_MATRIX, CONTEXT_MATRIX(ProjectionMatrixStack.Top) },
 528    { GL_PROJECTION_STACK_DEPTH, LOC_CUSTOM, TYPE_INT,
 529      offsetof(GLcontext, ProjectionMatrixStack.Depth) },
 530    { GL_RESCALE_NORMAL, CONTEXT_BOOL(Transform.RescaleNormals) },
 531    { GL_SHADE_MODEL, CONTEXT_ENUM(Light.ShadeModel) },
 532    { GL_TEXTURE_2D, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 533    { GL_TEXTURE_MATRIX, LOC_CUSTOM, TYPE_MATRIX, 0, extra_valid_texture_unit },
 534    { GL_TEXTURE_STACK_DEPTH, LOC_CUSTOM, TYPE_INT, 0,
 535      extra_valid_texture_unit  },
 536
 537    { GL_VERTEX_ARRAY, ARRAY_BOOL(Vertex.Enabled) },
 538    { GL_VERTEX_ARRAY_SIZE, ARRAY_INT(Vertex.Size) },
 539    { GL_VERTEX_ARRAY_TYPE, ARRAY_ENUM(Vertex.Type) },
 540    { GL_VERTEX_ARRAY_STRIDE, ARRAY_INT(Vertex.Stride) },
 541    { GL_NORMAL_ARRAY, ARRAY_ENUM(Normal.Enabled) },
 542    { GL_NORMAL_ARRAY_TYPE, ARRAY_ENUM(Normal.Type) },
 543    { GL_NORMAL_ARRAY_STRIDE, ARRAY_INT(Normal.Stride) },
 544    { GL_COLOR_ARRAY, ARRAY_BOOL(Color.Enabled) },
 545    { GL_COLOR_ARRAY_SIZE, ARRAY_INT(Color.Size) },
 546    { GL_COLOR_ARRAY_TYPE, ARRAY_ENUM(Color.Type) },
 547    { GL_COLOR_ARRAY_STRIDE, ARRAY_INT(Color.Stride) },
 548    { GL_TEXTURE_COORD_ARRAY,
 549      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Enabled) },
 550    { GL_TEXTURE_COORD_ARRAY_SIZE,
 551      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Size) },
 552    { GL_TEXTURE_COORD_ARRAY_TYPE,
 553      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Type) },
 554    { GL_TEXTURE_COORD_ARRAY_STRIDE,
 555      LOC_CUSTOM, TYPE_BOOLEAN, offsetof(struct gl_client_array, Stride) },
 556
 557    /* GL_ARB_multitexture */
 558    { GL_MAX_TEXTURE_UNITS_ARB,
 559      CONTEXT_INT(Const.MaxTextureUnits), extra_ARB_multitexture },
 560    { GL_CLIENT_ACTIVE_TEXTURE_ARB,
 561      LOC_CUSTOM, TYPE_INT, 0, extra_ARB_multitexture },
 562
 563    /* GL_ARB_texture_cube_map */
 564    { GL_TEXTURE_CUBE_MAP_ARB, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 565    /* S, T, and R are always set at the same time */
 566    { GL_TEXTURE_GEN_STR_OES, LOC_TEXUNIT, TYPE_BIT_0,
 567      offsetof(struct gl_texture_unit, TexGenEnabled) },
 568
 569    /* GL_ARB_multisample */
 570    { GL_MULTISAMPLE_ARB, CONTEXT_BOOL(Multisample.Enabled) },
 571    { GL_SAMPLE_ALPHA_TO_ONE_ARB, CONTEXT_BOOL(Multisample.SampleAlphaToOne) },
 572
 573    /* GL_ARB_vertex_buffer_object */
 574    { GL_VERTEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 575      offsetof(struct gl_array_object, Vertex.BufferObj) },
 576    { GL_NORMAL_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 577      offsetof(struct gl_array_object, Normal.BufferObj) },
 578    { GL_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
 579      offsetof(struct gl_array_object, Color.BufferObj) },
 580    { GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT, 0 },
 581
 582    /* GL_OES_point_sprite */
 583    { GL_POINT_SPRITE_NV,
 584      CONTEXT_BOOL(Point.PointSprite),
 585      extra_NV_point_sprite_ARB_point_sprite },
 586
 587    /* GL_ARB_fragment_shader */
 588    { GL_MAX_FRAGMENT_UNIFORM_COMPONENTS_ARB,
 589      CONTEXT_INT(Const.FragmentProgram.MaxUniformComponents),
 590      extra_ARB_fragment_shader },
 591
 592    /* GL_ARB_vertex_shader */
 593    { GL_MAX_VERTEX_UNIFORM_COMPONENTS_ARB,
 594      CONTEXT_INT(Const.VertexProgram.MaxUniformComponents),
 595      extra_ARB_vertex_shader },
 596    { GL_MAX_VARYING_FLOATS_ARB, LOC_CUSTOM, TYPE_INT, 0,
 597      extra_ARB_vertex_shader },
 598
 599    /* GL_EXT_texture_lod_bias */
 600    { GL_MAX_TEXTURE_LOD_BIAS_EXT, CONTEXT_FLOAT(Const.MaxTextureLodBias),
 601          extra_EXT_texture_lod_bias },
 602
 603    /* GL_EXT_texture_filter_anisotropic */
 604    { GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT,
 605      CONTEXT_FLOAT(Const.MaxTextureMaxAnisotropy),
 606      extra_EXT_texture_filter_anisotropic },
 607 #endif /* FEATURE_GL || FEATURE_ES1 */
 608
 609 #if FEATURE_ES1
 610    { 0, 0, TYPE_API_MASK, API_OPENGLES_BIT },
 611    /* XXX: OES_matrix_get */
 612    { GL_MODELVIEW_MATRIX_FLOAT_AS_INT_BITS_OES },
 613    { GL_PROJECTION_MATRIX_FLOAT_AS_INT_BITS_OES },
 614    { GL_TEXTURE_MATRIX_FLOAT_AS_INT_BITS_OES },
 615
 616    /* OES_point_size_array */
 617    { GL_POINT_SIZE_ARRAY_OES, ARRAY_FIELD(PointSize.Enabled, TYPE_BOOLEAN) },
 618    { GL_POINT_SIZE_ARRAY_TYPE_OES, ARRAY_FIELD(PointSize.Type, TYPE_ENUM) },
 619    { GL_POINT_SIZE_ARRAY_STRIDE_OES, ARRAY_FIELD(PointSize.Stride, TYPE_INT) },
 620    { GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES, LOC_CUSTOM, TYPE_INT, 0 },
 621 #endif /* FEATURE_ES1 */
 622
 623 #if FEATURE_GL || FEATURE_ES2
 624    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT | API_OPENGLES2_BIT },
 625    /* This entry isn't spec'ed for GLES 2, but is needed for Mesa's GLSL: */
 626    { GL_MAX_LIGHTS, CONTEXT_INT(Const.MaxLights) },
 627    { GL_MAX_TEXTURE_COORDS_ARB, /* == GL_MAX_TEXTURE_COORDS_NV */
 628      CONTEXT_INT(Const.MaxTextureCoordUnits),
 629      extra_ARB_fragment_program_NV_fragment_program },
 630
 631    /* GL_ARB_draw_buffers */
 632    { GL_MAX_DRAW_BUFFERS_ARB, CONTEXT_INT(Const.MaxDrawBuffers) },
 633
 634    { GL_BLEND_COLOR_EXT, CONTEXT_FIELD(Color.BlendColor[0], TYPE_FLOATN_4) },
 635    /* GL_ARB_fragment_program */
 636    { GL_MAX_TEXTURE_IMAGE_UNITS_ARB, /* == GL_MAX_TEXTURE_IMAGE_UNITS_NV */
 637      CONTEXT_INT(Const.MaxTextureImageUnits),
 638      extra_ARB_fragment_program_NV_fragment_program },
 639    { GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS_ARB,
 640      CONTEXT_INT(Const.MaxVertexTextureImageUnits), extra_ARB_vertex_shader },
 641    { GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS_ARB,
 642      CONTEXT_INT(Const.MaxCombinedTextureImageUnits),
 643      extra_ARB_vertex_shader },
 644
 645    /* GL_ARB_shader_objects
 646     * Actually, this token isn't part of GL_ARB_shader_objects, but is
 647     * close enough for now. */
 648    { GL_CURRENT_PROGRAM, LOC_CUSTOM, TYPE_INT, 0, extra_ARB_shader_objects },
 649
 650    /* OpenGL 2.0 */
 651    { GL_STENCIL_BACK_FUNC, CONTEXT_ENUM(Stencil.Function[1]) },
 652    { GL_STENCIL_BACK_VALUE_MASK, CONTEXT_INT(Stencil.ValueMask[1]) },
 653    { GL_STENCIL_BACK_WRITEMASK, CONTEXT_INT(Stencil.WriteMask[1]) },
 654    { GL_STENCIL_BACK_REF, CONTEXT_INT(Stencil.Ref[1]) },
 655    { GL_STENCIL_BACK_FAIL, CONTEXT_ENUM(Stencil.FailFunc[1]) },
 656    { GL_STENCIL_BACK_PASS_DEPTH_FAIL, CONTEXT_ENUM(Stencil.ZFailFunc[1]) },
 657    { GL_STENCIL_BACK_PASS_DEPTH_PASS, CONTEXT_ENUM(Stencil.ZPassFunc[1]) },
 658
 659    { GL_MAX_VERTEX_ATTRIBS_ARB,
 660      CONTEXT_INT(Const.VertexProgram.MaxAttribs), extra_ARB_vertex_program },
 661
 662    /* OES_texture_3D */
 663    { GL_TEXTURE_BINDING_3D, LOC_CUSTOM, TYPE_INT, TEXTURE_3D_INDEX },
 664    { GL_MAX_3D_TEXTURE_SIZE, LOC_CUSTOM, TYPE_INT,
 665      offsetof(GLcontext, Const.Max3DTextureLevels) },
 666
 667    /* GL_ARB_fragment_shader/OES_standard_derivatives */
 668    { GL_FRAGMENT_SHADER_DERIVATIVE_HINT_ARB,
 669      CONTEXT_ENUM(Hint.FragmentShaderDerivative), extra_ARB_fragment_shader },
 670 #endif /* FEATURE_GL || FEATURE_ES2 */
 671
 672 #if FEATURE_ES2
 673    /* Enums unique to OpenGL ES 2.0 */
 674    { 0, 0, TYPE_API_MASK, API_OPENGLES2_BIT },
 675    { GL_MAX_FRAGMENT_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT,
 676      offsetof(GLcontext, Const.FragmentProgram.MaxUniformComponents) },
 677    { GL_MAX_VARYING_VECTORS, LOC_CUSTOM, TYPE_INT,
 678      offsetof(GLcontext, Const.MaxVarying) },
 679    { GL_MAX_VERTEX_UNIFORM_VECTORS, LOC_CUSTOM, TYPE_INT,
 680      offsetof(GLcontext, Const.VertexProgram.MaxUniformComponents) },
 681    { GL_SHADER_COMPILER, CONST(1) },
 682    /* OES_get_program_binary */
 683    { GL_NUM_SHADER_BINARY_FORMATS, CONST(0) },
 684    { GL_SHADER_BINARY_FORMATS, CONST(0) },
 685 #endif /* FEATURE_ES2 */
 686
 687 #if FEATURE_GL
 688    /* Remaining enums are only in OpenGL */
 689    { 0, 0, TYPE_API_MASK, API_OPENGL_BIT },
 690    { GL_ACCUM_RED_BITS, BUFFER_INT(Visual.accumRedBits) },
 691    { GL_ACCUM_GREEN_BITS, BUFFER_INT(Visual.accumGreenBits) },
 692    { GL_ACCUM_BLUE_BITS, BUFFER_INT(Visual.accumBlueBits) },
 693    { GL_ACCUM_ALPHA_BITS, BUFFER_INT(Visual.accumAlphaBits) },
 694    { GL_ACCUM_CLEAR_VALUE, CONTEXT_FIELD(Accum.ClearColor[0], TYPE_FLOATN_4) },
 695    { GL_ALPHA_BIAS, CONTEXT_FLOAT(Pixel.AlphaBias) },
 696    { GL_ALPHA_SCALE, CONTEXT_FLOAT(Pixel.AlphaScale) },
 697    { GL_ATTRIB_STACK_DEPTH, CONTEXT_INT(AttribStackDepth) },
 698    { GL_AUTO_NORMAL, CONTEXT_BOOL(Eval.AutoNormal) },
 699    { GL_AUX_BUFFERS, BUFFER_INT(Visual.numAuxBuffers) },
 700    { GL_BLUE_BIAS, CONTEXT_FLOAT(Pixel.BlueBias) },
 701    { GL_BLUE_SCALE, CONTEXT_FLOAT(Pixel.BlueScale) },
 702    { GL_CLIENT_ATTRIB_STACK_DEPTH, CONTEXT_INT(ClientAttribStackDepth) },
 703    { GL_COLOR_MATERIAL_FACE, CONTEXT_ENUM(Light.ColorMaterialFace) },
 704    { GL_COLOR_MATERIAL_PARAMETER, CONTEXT_ENUM(Light.ColorMaterialMode) },
 705    { GL_CURRENT_INDEX,
 706      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_COLOR_INDEX][0]),
 707      extra_flush_current },
 708    { GL_CURRENT_RASTER_COLOR,
 709      CONTEXT_FIELD(Current.RasterColor[0], TYPE_FLOATN_4) },
 710    { GL_CURRENT_RASTER_DISTANCE, CONTEXT_FLOAT(Current.RasterDistance) },
 711    { GL_CURRENT_RASTER_INDEX, CONST(1) },
 712    { GL_CURRENT_RASTER_POSITION, CONTEXT_FLOAT4(Current.RasterPos[0]) },
 713    { GL_CURRENT_RASTER_SECONDARY_COLOR,
 714      CONTEXT_FIELD(Current.RasterSecondaryColor[0], TYPE_FLOATN_4) },
 715    { GL_CURRENT_RASTER_TEXTURE_COORDS, LOC_CUSTOM, TYPE_FLOAT_4, 0,
 716      extra_valid_texture_unit },
 717    { GL_CURRENT_RASTER_POSITION_VALID, CONTEXT_BOOL(Current.RasterPosValid) },
 718    { GL_DEPTH_BIAS, CONTEXT_FLOAT(Pixel.DepthBias) },
 719    { GL_DEPTH_SCALE, CONTEXT_FLOAT(Pixel.DepthScale) },
 720    { GL_DOUBLEBUFFER, BUFFER_INT(Visual.doubleBufferMode) },
 721    { GL_DRAW_BUFFER, BUFFER_ENUM(ColorDrawBuffer[0]) },
 722    { GL_EDGE_FLAG, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 723    { GL_FEEDBACK_BUFFER_SIZE, CONTEXT_INT(Feedback.BufferSize) },
 724    { GL_FEEDBACK_BUFFER_TYPE, CONTEXT_ENUM(Feedback.Type) },
 725    { GL_FOG_INDEX, CONTEXT_FLOAT(Fog.Index) },
 726    { GL_GREEN_BIAS, CONTEXT_FLOAT(Pixel.GreenBias) },
 727    { GL_GREEN_SCALE, CONTEXT_FLOAT(Pixel.GreenScale) },
 728    { GL_INDEX_BITS, BUFFER_INT(Visual.indexBits), extra_new_buffers },
 729    { GL_INDEX_CLEAR_VALUE, CONTEXT_INT(Color.ClearIndex) },
 730    { GL_INDEX_MODE, CONST(0) },
 731    { GL_INDEX_OFFSET, CONTEXT_INT(Pixel.IndexOffset) },
 732    { GL_INDEX_SHIFT, CONTEXT_INT(Pixel.IndexShift) },
 733    { GL_INDEX_WRITEMASK, CONTEXT_INT(Color.IndexMask) },
 734    { GL_LIGHT_MODEL_COLOR_CONTROL, CONTEXT_ENUM(Light.Model.ColorControl) },
 735    { GL_LIGHT_MODEL_LOCAL_VIEWER, CONTEXT_BOOL(Light.Model.LocalViewer) },
 736    { GL_LINE_STIPPLE, CONTEXT_BOOL(Line.StippleFlag) },
 737    { GL_LINE_STIPPLE_PATTERN, LOC_CUSTOM, TYPE_INT, 0 },
 738    { GL_LINE_STIPPLE_REPEAT, CONTEXT_INT(Line.StippleFactor) },
 739    { GL_LINE_WIDTH_GRANULARITY, CONTEXT_FLOAT(Const.LineWidthGranularity) },
 740    { GL_LIST_BASE, CONTEXT_INT(List.ListBase) },
 741    { GL_LIST_INDEX, LOC_CUSTOM, TYPE_INT, 0 },
 742    { GL_LIST_MODE, LOC_CUSTOM, TYPE_ENUM, 0 },
 743    { GL_INDEX_LOGIC_OP, CONTEXT_BOOL(Color.IndexLogicOpEnabled) },
 744    { GL_MAP1_COLOR_4, CONTEXT_BOOL(Eval.Map1Color4) },
 745    { GL_MAP1_GRID_DOMAIN, CONTEXT_FLOAT2(Eval.MapGrid1u1) },
 746    { GL_MAP1_GRID_SEGMENTS, CONTEXT_INT(Eval.MapGrid1un) },
 747    { GL_MAP1_INDEX, CONTEXT_BOOL(Eval.Map1Index) },
 748    { GL_MAP1_NORMAL, CONTEXT_BOOL(Eval.Map1Normal) },
 749    { GL_MAP1_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map1TextureCoord1) },
 750    { GL_MAP1_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map1TextureCoord2) },
 751    { GL_MAP1_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map1TextureCoord3) },
 752    { GL_MAP1_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map1TextureCoord4) },
 753    { GL_MAP1_VERTEX_3, CONTEXT_BOOL(Eval.Map1Vertex3) },
 754    { GL_MAP1_VERTEX_4, CONTEXT_BOOL(Eval.Map1Vertex4) },
 755    { GL_MAP2_COLOR_4, CONTEXT_BOOL(Eval.Map2Color4) },
 756    { GL_MAP2_GRID_DOMAIN, LOC_CUSTOM, TYPE_FLOAT_4, 0 },
 757    { GL_MAP2_GRID_SEGMENTS, CONTEXT_INT2(Eval.MapGrid2un) },
 758    { GL_MAP2_INDEX, CONTEXT_BOOL(Eval.Map2Index) },
 759    { GL_MAP2_NORMAL, CONTEXT_BOOL(Eval.Map2Normal) },
 760    { GL_MAP2_TEXTURE_COORD_1, CONTEXT_BOOL(Eval.Map2TextureCoord1) },
 761    { GL_MAP2_TEXTURE_COORD_2, CONTEXT_BOOL(Eval.Map2TextureCoord2) },
 762    { GL_MAP2_TEXTURE_COORD_3, CONTEXT_BOOL(Eval.Map2TextureCoord3) },
 763    { GL_MAP2_TEXTURE_COORD_4, CONTEXT_BOOL(Eval.Map2TextureCoord4) },
 764    { GL_MAP2_VERTEX_3, CONTEXT_BOOL(Eval.Map2Vertex3) },
 765    { GL_MAP2_VERTEX_4, CONTEXT_BOOL(Eval.Map2Vertex4) },
 766    { GL_MAP_COLOR, CONTEXT_BOOL(Pixel.MapColorFlag) },
 767    { GL_MAP_STENCIL, CONTEXT_BOOL(Pixel.MapStencilFlag) },
 768    { GL_MAX_ATTRIB_STACK_DEPTH, CONST(MAX_ATTRIB_STACK_DEPTH) },
 769    { GL_MAX_CLIENT_ATTRIB_STACK_DEPTH, CONST(MAX_CLIENT_ATTRIB_STACK_DEPTH) },
 770
 771    { GL_MAX_EVAL_ORDER, CONST(MAX_EVAL_ORDER) },
 772    { GL_MAX_LIST_NESTING, CONST(MAX_LIST_NESTING) },
 773    { GL_MAX_NAME_STACK_DEPTH, CONST(MAX_NAME_STACK_DEPTH) },
 774    { GL_MAX_PIXEL_MAP_TABLE, CONST(MAX_PIXEL_MAP_TABLE) },
 775    { GL_NAME_STACK_DEPTH, CONTEXT_INT(Select.NameStackDepth) },
 776    { GL_PACK_LSB_FIRST, CONTEXT_BOOL(Pack.LsbFirst) },
 777    { GL_PACK_ROW_LENGTH, CONTEXT_INT(Pack.RowLength) },
 778    { GL_PACK_SKIP_PIXELS, CONTEXT_INT(Pack.SkipPixels) },
 779    { GL_PACK_SKIP_ROWS, CONTEXT_INT(Pack.SkipRows) },
 780    { GL_PACK_SWAP_BYTES, CONTEXT_BOOL(Pack.SwapBytes) },
 781    { GL_PACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Pack.ImageHeight) },
 782    { GL_PACK_INVERT_MESA, CONTEXT_BOOL(Pack.Invert) },
 783    { GL_PIXEL_MAP_A_TO_A_SIZE, CONTEXT_INT(PixelMaps.AtoA.Size) },
 784    { GL_PIXEL_MAP_B_TO_B_SIZE, CONTEXT_INT(PixelMaps.BtoB.Size) },
 785    { GL_PIXEL_MAP_G_TO_G_SIZE, CONTEXT_INT(PixelMaps.GtoG.Size) },
 786    { GL_PIXEL_MAP_I_TO_A_SIZE, CONTEXT_INT(PixelMaps.ItoA.Size) },
 787    { GL_PIXEL_MAP_I_TO_B_SIZE, CONTEXT_INT(PixelMaps.ItoB.Size) },
 788    { GL_PIXEL_MAP_I_TO_G_SIZE, CONTEXT_INT(PixelMaps.ItoG.Size) },
 789    { GL_PIXEL_MAP_I_TO_I_SIZE, CONTEXT_INT(PixelMaps.ItoI.Size) },
 790    { GL_PIXEL_MAP_I_TO_R_SIZE, CONTEXT_INT(PixelMaps.ItoR.Size) },
 791    { GL_PIXEL_MAP_R_TO_R_SIZE, CONTEXT_INT(PixelMaps.RtoR.Size) },
 792    { GL_PIXEL_MAP_S_TO_S_SIZE, CONTEXT_INT(PixelMaps.StoS.Size) },
 793    { GL_POINT_SIZE_GRANULARITY, CONTEXT_FLOAT(Const.PointSizeGranularity) },
 794    { GL_POLYGON_MODE, CONTEXT_ENUM2(Polygon.FrontMode) },
 795    { GL_POLYGON_OFFSET_BIAS_EXT, CONTEXT_FLOAT(Polygon.OffsetUnits) },
 796    { GL_POLYGON_OFFSET_POINT, CONTEXT_BOOL(Polygon.OffsetPoint) },
 797    { GL_POLYGON_OFFSET_LINE, CONTEXT_BOOL(Polygon.OffsetLine) },
 798    { GL_POLYGON_SMOOTH, CONTEXT_BOOL(Polygon.SmoothFlag) },
 799    { GL_POLYGON_SMOOTH_HINT, CONTEXT_ENUM(Hint.PolygonSmooth) },
 800    { GL_POLYGON_STIPPLE, CONTEXT_BOOL(Polygon.StippleFlag) },
 801    { GL_READ_BUFFER, LOC_CUSTOM, TYPE_ENUM },
 802    { GL_RED_BIAS, CONTEXT_FLOAT(Pixel.RedBias) },
 803    { GL_RED_SCALE, CONTEXT_FLOAT(Pixel.RedScale) },
 804    { GL_RENDER_MODE, CONTEXT_ENUM(RenderMode) },
 805    { GL_RGBA_MODE, CONST(1) },
 806    { GL_SELECTION_BUFFER_SIZE, CONTEXT_INT(Select.BufferSize) },
 807    { GL_SHARED_TEXTURE_PALETTE_EXT, CONTEXT_BOOL(Texture.SharedPalette) },
 808
 809    { GL_STEREO, BUFFER_INT(Visual.stereoMode) },
 810
 811    { GL_TEXTURE_1D, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 812    { GL_TEXTURE_3D, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 813    { GL_TEXTURE_1D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 814    { GL_TEXTURE_2D_ARRAY_EXT, LOC_CUSTOM, TYPE_BOOLEAN, 0 },
 815
 816    { GL_TEXTURE_BINDING_1D, LOC_CUSTOM, TYPE_INT, TEXTURE_1D_INDEX },
 817    { GL_TEXTURE_BINDING_1D_ARRAY, LOC_CUSTOM, TYPE_INT,
 818      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 819    { GL_TEXTURE_BINDING_2D_ARRAY, LOC_CUSTOM, TYPE_INT,
 820      TEXTURE_1D_ARRAY_INDEX, extra_MESA_texture_array },
 821    { GL_MAX_ARRAY_TEXTURE_LAYERS_EXT,
 822      CONTEXT_INT(Const.MaxArrayTextureLayers), extra_MESA_texture_array },
 823
 824    { GL_TEXTURE_GEN_S, LOC_TEXUNIT, TYPE_BIT_0,
 825      offsetof(struct gl_texture_unit, TexGenEnabled) },
 826    { GL_TEXTURE_GEN_T, LOC_TEXUNIT, TYPE_BIT_1,
 827      offsetof(struct gl_texture_unit, TexGenEnabled) },
 828    { GL_TEXTURE_GEN_R, LOC_TEXUNIT, TYPE_BIT_2,
 829      offsetof(struct gl_texture_unit, TexGenEnabled) },
 830    { GL_TEXTURE_GEN_Q, LOC_TEXUNIT, TYPE_BIT_3,
 831      offsetof(struct gl_texture_unit, TexGenEnabled) },
 832    { GL_UNPACK_LSB_FIRST, CONTEXT_BOOL(Unpack.LsbFirst) },
 833    { GL_UNPACK_ROW_LENGTH, CONTEXT_INT(Unpack.RowLength) },
 834    { GL_UNPACK_SKIP_PIXELS, CONTEXT_INT(Unpack.SkipPixels) },
 835    { GL_UNPACK_SKIP_ROWS, CONTEXT_INT(Unpack.SkipRows) },
 836    { GL_UNPACK_SWAP_BYTES, CONTEXT_BOOL(Unpack.SwapBytes) },
 837    { GL_UNPACK_SKIP_IMAGES_EXT, CONTEXT_INT(Unpack.SkipImages) },
 838    { GL_UNPACK_IMAGE_HEIGHT_EXT, CONTEXT_INT(Unpack.ImageHeight) },
 839    { GL_UNPACK_CLIENT_STORAGE_APPLE, CONTEXT_BOOL(Unpack.ClientStorage) },
 840    { GL_ZOOM_X, CONTEXT_FLOAT(Pixel.ZoomX) },
 841    { GL_ZOOM_Y, CONTEXT_FLOAT(Pixel.ZoomY) },
 842
 843    /* Vertex arrays */
 844    { GL_VERTEX_ARRAY_COUNT_EXT, CONST(0) },
 845    { GL_NORMAL_ARRAY_COUNT_EXT, CONST(0) },
 846    { GL_COLOR_ARRAY_COUNT_EXT, CONST(0) },
 847    { GL_INDEX_ARRAY, ARRAY_BOOL(Index.Enabled) },
 848    { GL_INDEX_ARRAY_TYPE, ARRAY_ENUM(Index.Type) },
 849    { GL_INDEX_ARRAY_STRIDE, ARRAY_INT(Index.Stride) },
 850    { GL_INDEX_ARRAY_COUNT_EXT, CONST(0) },
 851    { GL_TEXTURE_COORD_ARRAY_COUNT_EXT, CONST(0) },
 852    { GL_EDGE_FLAG_ARRAY, ARRAY_BOOL(EdgeFlag.Enabled) },
 853    { GL_EDGE_FLAG_ARRAY_STRIDE, ARRAY_INT(EdgeFlag.Stride) },
 854    { GL_EDGE_FLAG_ARRAY_COUNT_EXT, CONST(0) },
 855
 856    /* GL_ARB_texture_compression */
 857    { GL_TEXTURE_COMPRESSION_HINT_ARB, CONTEXT_INT(Hint.TextureCompression) },
 858
 859    /* GL_EXT_compiled_vertex_array */
 860    { GL_ARRAY_ELEMENT_LOCK_FIRST_EXT, CONTEXT_INT(Array.LockFirst),
 861      extra_EXT_compiled_vertex_array },
 862    { GL_ARRAY_ELEMENT_LOCK_COUNT_EXT, CONTEXT_INT(Array.LockCount),
 863      extra_EXT_compiled_vertex_array },
 864
 865    /* GL_ARB_transpose_matrix */
 866    { GL_TRANSPOSE_COLOR_MATRIX_ARB, CONTEXT_MATRIX_T(ColorMatrixStack.Top) },
 867    { GL_TRANSPOSE_MODELVIEW_MATRIX_ARB,
 868      CONTEXT_MATRIX_T(ModelviewMatrixStack) },
 869    { GL_TRANSPOSE_PROJECTION_MATRIX_ARB,
 870      CONTEXT_MATRIX_T(ProjectionMatrixStack.Top) },
 871    { GL_TRANSPOSE_TEXTURE_MATRIX_ARB, CONTEXT_MATRIX_T(TextureMatrixStack) },
 872
 873    /* GL_SGI_color_matrix (also in 1.2 imaging) */
 874    { GL_COLOR_MATRIX_SGI, CONTEXT_MATRIX(ColorMatrixStack.Top) },
 875    { GL_COLOR_MATRIX_STACK_DEPTH_SGI, LOC_CUSTOM, TYPE_INT,
 876      offsetof(GLcontext, ColorMatrixStack.Depth) },
 877    { GL_MAX_COLOR_MATRIX_STACK_DEPTH_SGI,
 878      CONST(MAX_COLOR_STACK_DEPTH) },
 879    { GL_POST_COLOR_MATRIX_RED_SCALE_SGI,
 880      CONTEXT_FLOAT(Pixel.PostColorMatrixScale[0]) },
 881    { GL_POST_COLOR_MATRIX_GREEN_SCALE_SGI,
 882      CONTEXT_FLOAT(Pixel.PostColorMatrixScale[1]) },
 883    { GL_POST_COLOR_MATRIX_BLUE_SCALE_SGI,
 884      CONTEXT_FLOAT(Pixel.PostColorMatrixScale[2]) },
 885    { GL_POST_COLOR_MATRIX_ALPHA_SCALE_SGI,
 886      CONTEXT_FLOAT(Pixel.PostColorMatrixScale[3]) },
 887    { GL_POST_COLOR_MATRIX_RED_BIAS_SGI,
 888      CONTEXT_FLOAT(Pixel.PostColorMatrixBias[0]) },
 889    { GL_POST_COLOR_MATRIX_GREEN_BIAS_SGI,
 890      CONTEXT_FLOAT(Pixel.PostColorMatrixBias[1]) },
 891    { GL_POST_COLOR_MATRIX_BLUE_BIAS_SGI,
 892      CONTEXT_FLOAT(Pixel.PostColorMatrixBias[2]) },
 893    { GL_POST_COLOR_MATRIX_ALPHA_BIAS_SGI,
 894      CONTEXT_FLOAT(Pixel.PostColorMatrixBias[3]) },
 895
 896    /* GL_EXT_convolution (also in 1.2 imaging) */
 897    { GL_CONVOLUTION_1D_EXT, CONTEXT_BOOL(Pixel.Convolution1DEnabled),
 898      extra_EXT_convolution },
 899    { GL_CONVOLUTION_2D_EXT, CONTEXT_BOOL(Pixel.Convolution2DEnabled),
 900      extra_EXT_convolution },
 901    { GL_SEPARABLE_2D_EXT, CONTEXT_BOOL(Pixel.Separable2DEnabled),
 902      extra_EXT_convolution },
 903    { GL_POST_CONVOLUTION_RED_SCALE_EXT,
 904      CONTEXT_FLOAT(Pixel.PostConvolutionScale[0]),
 905      extra_EXT_convolution },
 906    { GL_POST_CONVOLUTION_GREEN_SCALE_EXT,
 907      CONTEXT_FLOAT(Pixel.PostConvolutionScale[1]),
 908      extra_EXT_convolution },
 909    { GL_POST_CONVOLUTION_BLUE_SCALE_EXT,
 910      CONTEXT_FLOAT(Pixel.PostConvolutionScale[2]),
 911      extra_EXT_convolution },
 912    { GL_POST_CONVOLUTION_ALPHA_SCALE_EXT,
 913      CONTEXT_FLOAT(Pixel.PostConvolutionScale[3]),
 914      extra_EXT_convolution },
 915    { GL_POST_CONVOLUTION_RED_BIAS_EXT,
 916      CONTEXT_FLOAT(Pixel.PostConvolutionBias[0]),
 917      extra_EXT_convolution },
 918    { GL_POST_CONVOLUTION_GREEN_BIAS_EXT,
 919      CONTEXT_FLOAT(Pixel.PostConvolutionBias[1]),
 920      extra_EXT_convolution },
 921    { GL_POST_CONVOLUTION_BLUE_BIAS_EXT,
 922      CONTEXT_FLOAT(Pixel.PostConvolutionBias[2]),
 923      extra_EXT_convolution },
 924    { GL_POST_CONVOLUTION_ALPHA_BIAS_EXT,
 925      CONTEXT_FLOAT(Pixel.PostConvolutionBias[3]),
 926      extra_EXT_convolution },
 927
 928    /* GL_EXT_histogram / GL_ARB_imaging */
 929    { GL_HISTOGRAM, CONTEXT_BOOL(Pixel.HistogramEnabled),
 930      extra_EXT_histogram },
 931    { GL_MINMAX, CONTEXT_BOOL(Pixel.MinMaxEnabled), extra_EXT_histogram },
 932
 933    /* GL_SGI_color_table / GL_ARB_imaging */
 934    { GL_COLOR_TABLE_SGI,
 935      CONTEXT_BOOL(Pixel.ColorTableEnabled[COLORTABLE_PRECONVOLUTION]),
 936      extra_SGI_color_table },
 937    { GL_POST_CONVOLUTION_COLOR_TABLE_SGI,
 938      CONTEXT_BOOL(Pixel.ColorTableEnabled[COLORTABLE_POSTCONVOLUTION]),
 939      extra_SGI_color_table },
 940    { GL_POST_COLOR_MATRIX_COLOR_TABLE_SGI,
 941      CONTEXT_BOOL(Pixel.ColorTableEnabled[COLORTABLE_POSTCOLORMATRIX]),
 942      extra_SGI_color_table },
 943
 944    /* GL_SGI_texture_color_table */
 945    { GL_TEXTURE_COLOR_TABLE_SGI, LOC_TEXUNIT, TYPE_BOOLEAN,
 946      offsetof(struct gl_texture_unit, ColorTableEnabled),
 947      extra_SGI_texture_color_table },
 948
 949    /* GL_EXT_secondary_color */
 950    { GL_COLOR_SUM_EXT, CONTEXT_BOOL(Fog.ColorSumEnabled),
 951      extra_EXT_secondary_color_ARB_vertex_program },
 952    { GL_CURRENT_SECONDARY_COLOR_EXT,
 953      CONTEXT_FIELD(Current.Attrib[VERT_ATTRIB_COLOR1][0], TYPE_FLOATN_4),
 954      extra_EXT_secondary_color_flush_current },
 955    { GL_SECONDARY_COLOR_ARRAY_EXT, ARRAY_BOOL(SecondaryColor.Enabled),
 956      extra_EXT_secondary_color },
 957    { GL_SECONDARY_COLOR_ARRAY_TYPE_EXT, ARRAY_ENUM(SecondaryColor.Type),
 958      extra_EXT_secondary_color },
 959    { GL_SECONDARY_COLOR_ARRAY_STRIDE_EXT, ARRAY_INT(SecondaryColor.Stride),
 960      extra_EXT_secondary_color },
 961    { GL_SECONDARY_COLOR_ARRAY_SIZE_EXT, ARRAY_INT(SecondaryColor.Size),
 962      extra_EXT_secondary_color },
 963
 964    /* GL_EXT_fog_coord */
 965    { GL_CURRENT_FOG_COORDINATE_EXT,
 966      CONTEXT_FLOAT(Current.Attrib[VERT_ATTRIB_FOG][0]),
 967      extra_EXT_fog_coord_flush_current },
 968    { GL_FOG_COORDINATE_ARRAY_EXT, ARRAY_BOOL(FogCoord.Enabled),
 969      extra_EXT_fog_coord },
 970    { GL_FOG_COORDINATE_ARRAY_TYPE_EXT, ARRAY_ENUM(FogCoord.Type),
 971      extra_EXT_fog_coord },
 972    { GL_FOG_COORDINATE_ARRAY_STRIDE_EXT, ARRAY_INT(FogCoord.Stride),
 973      extra_EXT_fog_coord },
 974    { GL_FOG_COORDINATE_SOURCE_EXT, CONTEXT_ENUM(Fog.FogCoordinateSource),
 975      extra_EXT_fog_coord },
 976
 977    /* GL_IBM_rasterpos_clip */
 978    { GL_RASTER_POSITION_UNCLIPPED_IBM,
 979      CONTEXT_BOOL(Transform.RasterPositionUnclipped),
 980      extra_IBM_rasterpos_clip },
 981
 982    /* GL_NV_point_sprite */
 983    { GL_POINT_SPRITE_R_MODE_NV,
 984      CONTEXT_ENUM(Point.SpriteRMode), extra_NV_point_sprite },
 985    { GL_POINT_SPRITE_COORD_ORIGIN, CONTEXT_ENUM(Point.SpriteOrigin),
 986      extra_NV_point_sprite_ARB_point_sprite },
 987
 988    /* GL_NV_vertex_program */
 989    { GL_VERTEX_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
 990      extra_NV_vertex_program },
 991    { GL_VERTEX_ATTRIB_ARRAY0_NV, ARRAY_BOOL(VertexAttrib[0].Enabled),
 992      extra_NV_vertex_program },
 993    { GL_VERTEX_ATTRIB_ARRAY1_NV, ARRAY_BOOL(VertexAttrib[1].Enabled),
 994      extra_NV_vertex_program },
 995    { GL_VERTEX_ATTRIB_ARRAY2_NV, ARRAY_BOOL(VertexAttrib[2].Enabled),
 996      extra_NV_vertex_program },
 997    { GL_VERTEX_ATTRIB_ARRAY3_NV, ARRAY_BOOL(VertexAttrib[3].Enabled),
 998      extra_NV_vertex_program },
 999    { GL_VERTEX_ATTRIB_ARRAY4_NV, ARRAY_BOOL(VertexAttrib[4].Enabled),
1000      extra_NV_vertex_program },
1001    { GL_VERTEX_ATTRIB_ARRAY5_NV, ARRAY_BOOL(VertexAttrib[5].Enabled),
1002      extra_NV_vertex_program },
1003    { GL_VERTEX_ATTRIB_ARRAY6_NV, ARRAY_BOOL(VertexAttrib[6].Enabled),
1004      extra_NV_vertex_program },
1005    { GL_VERTEX_ATTRIB_ARRAY7_NV, ARRAY_BOOL(VertexAttrib[7].Enabled),
1006      extra_NV_vertex_program },
1007    { GL_VERTEX_ATTRIB_ARRAY8_NV, ARRAY_BOOL(VertexAttrib[8].Enabled),
1008      extra_NV_vertex_program },
1009    { GL_VERTEX_ATTRIB_ARRAY9_NV, ARRAY_BOOL(VertexAttrib[9].Enabled),
1010      extra_NV_vertex_program },
1011    { GL_VERTEX_ATTRIB_ARRAY10_NV, ARRAY_BOOL(VertexAttrib[10].Enabled),
1012      extra_NV_vertex_program },
1013    { GL_VERTEX_ATTRIB_ARRAY11_NV, ARRAY_BOOL(VertexAttrib[11].Enabled),
1014      extra_NV_vertex_program },
1015    { GL_VERTEX_ATTRIB_ARRAY12_NV, ARRAY_BOOL(VertexAttrib[12].Enabled),
1016      extra_NV_vertex_program },
1017    { GL_VERTEX_ATTRIB_ARRAY13_NV, ARRAY_BOOL(VertexAttrib[13].Enabled),
1018      extra_NV_vertex_program },
1019    { GL_VERTEX_ATTRIB_ARRAY14_NV, ARRAY_BOOL(VertexAttrib[14].Enabled),
1020      extra_NV_vertex_program },
1021    { GL_VERTEX_ATTRIB_ARRAY15_NV, ARRAY_BOOL(VertexAttrib[15].Enabled),
1022      extra_NV_vertex_program },
1023    { GL_MAP1_VERTEX_ATTRIB0_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[0]),
1024      extra_NV_vertex_program },
1025    { GL_MAP1_VERTEX_ATTRIB1_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[1]),
1026      extra_NV_vertex_program },
1027    { GL_MAP1_VERTEX_ATTRIB2_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[2]),
1028      extra_NV_vertex_program },
1029    { GL_MAP1_VERTEX_ATTRIB3_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[3]),
1030      extra_NV_vertex_program },
1031    { GL_MAP1_VERTEX_ATTRIB4_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[4]),
1032      extra_NV_vertex_program },
1033    { GL_MAP1_VERTEX_ATTRIB5_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[5]),
1034      extra_NV_vertex_program },
1035    { GL_MAP1_VERTEX_ATTRIB6_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[6]),
1036      extra_NV_vertex_program },
1037    { GL_MAP1_VERTEX_ATTRIB7_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[7]),
1038      extra_NV_vertex_program },
1039    { GL_MAP1_VERTEX_ATTRIB8_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[8]),
1040      extra_NV_vertex_program },
1041    { GL_MAP1_VERTEX_ATTRIB9_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[9]),
1042      extra_NV_vertex_program },
1043    { GL_MAP1_VERTEX_ATTRIB10_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[10]),
1044      extra_NV_vertex_program },
1045    { GL_MAP1_VERTEX_ATTRIB11_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[11]),
1046      extra_NV_vertex_program },
1047    { GL_MAP1_VERTEX_ATTRIB12_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[12]),
1048      extra_NV_vertex_program },
1049    { GL_MAP1_VERTEX_ATTRIB13_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[13]),
1050      extra_NV_vertex_program },
1051    { GL_MAP1_VERTEX_ATTRIB14_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[14]),
1052      extra_NV_vertex_program },
1053    { GL_MAP1_VERTEX_ATTRIB15_4_NV, CONTEXT_BOOL(Eval.Map1Attrib[15]),
1054      extra_NV_vertex_program },
1055
1056    /* GL_NV_fragment_program */
1057    { GL_FRAGMENT_PROGRAM_NV, CONTEXT_BOOL(FragmentProgram.Enabled),
1058      extra_NV_fragment_program },
1059    { GL_FRAGMENT_PROGRAM_BINDING_NV, LOC_CUSTOM, TYPE_INT, 0,
1060      extra_NV_fragment_program },
1061    { GL_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMETERS_NV,
1062      CONST(MAX_NV_FRAGMENT_PROGRAM_PARAMS),
1063      extra_NV_fragment_program },
1064
1065    /* GL_NV_texture_rectangle */
1066    { GL_TEXTURE_RECTANGLE_NV,
1067      LOC_CUSTOM, TYPE_BOOLEAN, 0, extra_NV_texture_rectangle },
1068    { GL_TEXTURE_BINDING_RECTANGLE_NV,
1069      LOC_CUSTOM, TYPE_INT, TEXTURE_RECT_INDEX, extra_NV_texture_rectangle },
1070    { GL_MAX_RECTANGLE_TEXTURE_SIZE_NV,
1071      CONTEXT_INT(Const.MaxTextureRectSize), extra_NV_texture_rectangle },
1072
1073    /* GL_EXT_stencil_two_side */
1074    { GL_STENCIL_TEST_TWO_SIDE_EXT, CONTEXT_BOOL(Stencil.TestTwoSide),
1075          extra_EXT_stencil_two_side },
1076    { GL_ACTIVE_STENCIL_FACE_EXT, LOC_CUSTOM, TYPE_ENUM, 0 },
1077
1078    /* GL_NV_light_max_exponent */
1079    { GL_MAX_SHININESS_NV, CONTEXT_FLOAT(Const.MaxShininess),
1080      extra_NV_light_max_exponent },
1081    { GL_MAX_SPOT_EXPONENT_NV, CONTEXT_FLOAT(Const.MaxSpotExponent),
1082      extra_NV_light_max_exponent },
1083
1084    /* GL_ARB_vertex_buffer_object */
1085    { GL_INDEX_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1086      offsetof(struct gl_array_object, Index.BufferObj) },
1087    { GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1088      offsetof(struct gl_array_object, EdgeFlag.BufferObj) },
1089    { GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1090      offsetof(struct gl_array_object, SecondaryColor.BufferObj) },
1091    { GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB, LOC_CUSTOM, TYPE_INT,
1092      offsetof(struct gl_array_object, FogCoord.BufferObj) },
1093
1094    /* GL_EXT_pixel_buffer_object */
1095    { GL_PIXEL_PACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1096      extra_EXT_pixel_buffer_object },
1097    { GL_PIXEL_UNPACK_BUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1098      extra_EXT_pixel_buffer_object },
1099
1100    /* GL_ARB_vertex_program */
1101    { GL_VERTEX_PROGRAM_ARB, /* == GL_VERTEX_PROGRAM_NV */
1102      CONTEXT_BOOL(VertexProgram.Enabled),
1103      extra_ARB_vertex_program_NV_vertex_program },
1104    { GL_VERTEX_PROGRAM_POINT_SIZE_ARB, /* == GL_VERTEX_PROGRAM_POINT_SIZE_NV*/
1105      CONTEXT_BOOL(VertexProgram.PointSizeEnabled),
1106      extra_ARB_vertex_program_NV_vertex_program },
1107    { GL_VERTEX_PROGRAM_TWO_SIDE_ARB, /* == GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1108      CONTEXT_BOOL(VertexProgram.TwoSideEnabled),
1109      extra_ARB_vertex_program_NV_vertex_program },
1110    { GL_MAX_PROGRAM_MATRIX_STACK_DEPTH_ARB, /* == GL_MAX_TRACK_MATRIX_STACK_DEPTH_NV */
1111      CONTEXT_INT(Const.MaxProgramMatrixStackDepth),
1112      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1113    { GL_MAX_PROGRAM_MATRICES_ARB, /* == GL_MAX_TRACK_MATRICES_NV */
1114      CONTEXT_INT(Const.MaxProgramMatrices),
1115      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1116    { GL_CURRENT_MATRIX_STACK_DEPTH_ARB, /* == GL_CURRENT_MATRIX_STACK_DEPTH_NV */
1117      LOC_CUSTOM, TYPE_INT, 0,
1118      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1119
1120    { GL_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1121      LOC_CUSTOM, TYPE_MATRIX, 0,
1122      extra_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1123    { GL_TRANSPOSE_CURRENT_MATRIX_ARB, /* == GL_CURRENT_MATRIX_NV */
1124      LOC_CUSTOM, TYPE_MATRIX, 0,
1125      extra_ARB_vertex_program_ARB_fragment_program },
1126
1127    { GL_PROGRAM_ERROR_POSITION_ARB, /* == GL_PROGRAM_ERROR_POSITION_NV */
1128      CONTEXT_INT(Program.ErrorPos),
1129      extra_NV_vertex_program_ARB_vertex_program_ARB_fragment_program_NV_vertex_program },
1130
1131    /* GL_ARB_fragment_program */
1132    { GL_FRAGMENT_PROGRAM_ARB, CONTEXT_BOOL(FragmentProgram.Enabled),
1133      extra_ARB_fragment_program },
1134
1135    /* GL_EXT_depth_bounds_test */
1136    { GL_DEPTH_BOUNDS_TEST_EXT, CONTEXT_BOOL(Depth.BoundsTest),
1137      extra_EXT_depth_bounds_test },
1138    { GL_DEPTH_BOUNDS_EXT, CONTEXT_FLOAT2(Depth.BoundsMin),
1139      extra_EXT_depth_bounds_test },
1140
1141    /* GL_ARB_depth_clamp*/
1142    { GL_DEPTH_CLAMP, CONTEXT_BOOL(Transform.DepthClamp),
1143      extra_ARB_depth_clamp },
1144
1145    /* GL_ARB_draw_buffers */
1146    { GL_DRAW_BUFFER0_ARB, BUFFER_ENUM(ColorDrawBuffer[0]) },
1147    { GL_DRAW_BUFFER1_ARB, BUFFER_ENUM(ColorDrawBuffer[1]),
1148      extra_valid_draw_buffer },
1149    { GL_DRAW_BUFFER2_ARB, BUFFER_ENUM(ColorDrawBuffer[2]),
1150      extra_valid_draw_buffer },
1151    { GL_DRAW_BUFFER3_ARB, BUFFER_ENUM(ColorDrawBuffer[3]),
1152      extra_valid_draw_buffer },
1153
1154    /* GL_ATI_fragment_shader */
1155    { GL_NUM_FRAGMENT_REGISTERS_ATI, CONST(6), extra_ATI_fragment_shader },
1156    { GL_NUM_FRAGMENT_CONSTANTS_ATI, CONST(8), extra_ATI_fragment_shader },
1157    { GL_NUM_PASSES_ATI, CONST(2), extra_ATI_fragment_shader },
1158    { GL_NUM_INSTRUCTIONS_PER_PASS_ATI, CONST(8), extra_ATI_fragment_shader },
1159    { GL_NUM_INSTRUCTIONS_TOTAL_ATI, CONST(16), extra_ATI_fragment_shader },
1160    { GL_COLOR_ALPHA_PAIRING_ATI, CONST(GL_TRUE), extra_ATI_fragment_shader },
1161    { GL_NUM_LOOPBACK_COMPONENTS_ATI, CONST(3), extra_ATI_fragment_shader },
1162    { GL_NUM_INPUT_INTERPOLATOR_COMPONENTS_ATI,
1163      CONST(3), extra_ATI_fragment_shader },
1164
1165    /* GL_EXT_framebuffer_object */
1166    { GL_MAX_COLOR_ATTACHMENTS_EXT, CONTEXT_INT(Const.MaxColorAttachments),
1167      extra_EXT_framebuffer_object },
1168
1169    /* GL_EXT_framebuffer_blit
1170     * NOTE: GL_DRAW_FRAMEBUFFER_BINDING_EXT == GL_FRAMEBUFFER_BINDING_EXT */
1171    { GL_READ_FRAMEBUFFER_BINDING_EXT, LOC_CUSTOM, TYPE_INT, 0,
1172      extra_EXT_framebuffer_blit },
1173
1174    /* GL_EXT_provoking_vertex */
1175    { GL_PROVOKING_VERTEX_EXT,
1176      CONTEXT_BOOL(Light.ProvokingVertex), extra_EXT_provoking_vertex },
1177    { GL_QUADS_FOLLOW_PROVOKING_VERTEX_CONVENTION_EXT,
1178      CONTEXT_BOOL(Const.QuadsFollowProvokingVertexConvention),
1179      extra_EXT_provoking_vertex },
1180
1181    /* GL_ARB_framebuffer_object */
1182    { GL_MAX_SAMPLES, CONTEXT_INT(Const.MaxSamples),
1183      extra_ARB_framebuffer_object },
1184
1185    /* GL_APPLE_vertex_array_object */
1186    { GL_VERTEX_ARRAY_BINDING_APPLE, ARRAY_INT(Name),
1187      extra_APPLE_vertex_array_object },
1188
1189    /* GL_ARB_seamless_cube_map */
1190    { GL_TEXTURE_CUBE_MAP_SEAMLESS,
1191      CONTEXT_BOOL(Texture.CubeMapSeamless), extra_ARB_seamless_cube_map },
1192
1193    /* GL_ARB_sync */
1194    { GL_MAX_SERVER_WAIT_TIMEOUT,
1195      CONTEXT_INT64(Const.MaxServerWaitTimeout), extra_ARB_sync },
1196
1197    /* GL_EXT_transform_feedback */
1198    { GL_TRANSFORM_FEEDBACK_BUFFER_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1199      extra_EXT_transform_feedback },
1200    { GL_RASTERIZER_DISCARD, CONTEXT_BOOL(TransformFeedback.RasterDiscard),
1201      extra_EXT_transform_feedback },
1202    { GL_MAX_TRANSFORM_FEEDBACK_INTERLEAVED_COMPONENTS,
1203      CONTEXT_INT(Const.MaxTransformFeedbackInterleavedComponents),
1204      extra_EXT_transform_feedback },
1205    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS,
1206      CONTEXT_INT(Const.MaxTransformFeedbackSeparateAttribs),
1207      extra_EXT_transform_feedback },
1208    { GL_MAX_TRANSFORM_FEEDBACK_SEPARATE_COMPONENTS,
1209      CONTEXT_INT(Const.MaxTransformFeedbackSeparateComponents),
1210      extra_EXT_transform_feedback },
1211
1212    /* GL_ARB_transform_feedback2 */
1213    { GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1214      extra_ARB_transform_feedback2 },
1215    { GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE, LOC_CUSTOM, TYPE_BOOLEAN, 0,
1216      extra_ARB_transform_feedback2 },
1217    { GL_TRANSFORM_FEEDBACK_BINDING, LOC_CUSTOM, TYPE_INT, 0,
1218      extra_ARB_transform_feedback2 },
1219
1220    /* GL 3.0 */
1221    { GL_NUM_EXTENSIONS, LOC_CUSTOM, TYPE_INT, 0, extra_version_30 },
1222    { GL_MAJOR_VERSION, CONTEXT_INT(VersionMajor), extra_version_30 },
1223    { GL_MINOR_VERSION, CONTEXT_INT(VersionMinor), extra_version_30  },
1224    { GL_CONTEXT_FLAGS, CONTEXT_INT(Const.ContextFlags), extra_version_30  },
1225
1226    /* GL 3.1 */
1227    { GL_PRIMITIVE_RESTART, CONTEXT_BOOL(Array.PrimitiveRestart),
1228      extra_version_31 },
1229    { GL_PRIMITIVE_RESTART_INDEX, CONTEXT_INT(Array.RestartIndex),
1230      extra_version_31 },
1231
1232    /* GL 3.2 */
1233    { GL_CONTEXT_PROFILE_MASK, CONTEXT_INT(Const.ProfileMask),
1234      extra_version_32 },
1235 #endif /* FEATURE_GL */
1236 };
1237
1238 /* All we need now is a way to look up the value struct from the enum.
1239  * The code generated by gcc for the old generated big switch
1240  * statement is a big, balanced, open coded if/else tree, essentially
1241  * an unrolled binary search.  It would be natural to sort the new
1242  * enum table and use bsearch(), but we will use a read-only hash
1243  * table instead.  bsearch() has a nice guaranteed worst case
1244  * performance, but we're also guaranteed to hit that worst case
1245  * (log2(n) iterations) for about half the enums.  Instead, using an
1246  * open addressing hash table, we can find the enum on the first try
1247  * for 80% of the enums, 1 collision for 10% and never more than 5
1248  * collisions for any enum (typical numbers).  And the code is very
1249  * simple, even though it feels a little magic. */
1250
1251 static unsigned short table[1024];
1252 static const int prime_factor = 89, prime_step = 281;
1253
1254 #ifdef GET_DEBUG
1255 static void
1256 print_table_stats(void)
1257 {
1258    int i, j, collisions[11], count, hash, mask;
1259    const struct value_desc *d;
1260
1261    count = 0;
1262    mask = Elements(table) - 1;
1263    memset(collisions, 0, sizeof collisions);
1264
1265    for (i = 0; i < Elements(table); i++) {
1266       if (!table[i])
1267          continue;
1268       count++;
1269       d = &values[table[i]];
1270       hash = (d->pname * prime_factor);
1271       j = 0;
1272       while (1) {
1273          if (values[table[hash & mask]].pname == d->pname)
1274             break;
1275          hash += prime_step;
1276          j++;
1277       }
1278
1279       if (j < 10)
1280          collisions[j]++;
1281       else
1282          collisions[10]++;
1283    }
1284
1285    printf("number of enums: %d (total %d)\n", count, Elements(values));
1286    for (i = 0; i < Elements(collisions) - 1; i++)
1287       if (collisions[i] > 0)
1288          printf("  %d enums with %d %scollisions\n",
1289                 collisions[i], i, i == 10 ? "or more " : "");
1290 }
1291 #endif
1292
1293 /**
1294  * Initialize the enum hash for a given API
1295  *
1296  * This is called from one_time_init() to insert the enum values that
1297  * are valid for the API in question into the enum hash table.
1298  *
1299  * \param the current context, for determining the API in question
1300  */
1301 void _mesa_init_get_hash(GLcontext *ctx)
1302 {
1303    int i, hash, index, mask;
1304    int api_mask = 0, api_bit;
1305
1306    mask = Elements(table) - 1;
1307    api_bit = 1 << ctx->API;
1308
1309    for (i = 0; i < Elements(values); i++) {
1310       if (values[i].type == TYPE_API_MASK) {
1311          api_mask = values[i].offset;
1312          continue;
1313       }
1314       if (!(api_mask & api_bit))
1315          continue;
1316
1317       hash = (values[i].pname * prime_factor) & mask;
1318       while (1) {
1319          index = hash & mask;
1320          if (!table[index]) {
1321             table[index] = i;
1322             break;
1323          }
1324          hash += prime_step;
1325       }
1326    }
1327
1328 #ifdef GET_DEBUG
1329    print_table_stats();
1330 #endif
1331 }
1332
1333 /**
1334  * Handle irregular enums
1335  *
1336  * Some values don't conform to the "well-known type at context
1337  * pointer + offset" pattern, so we have this function to catch all
1338  * the corner cases.  Typically, it's a computed value or a one-off
1339  * pointer to a custom struct or something.
1340  *
1341  * In this case we can't return a pointer to the value, so we'll have
1342  * to use the temporary variable 'v' declared back in the calling
1343  * glGet*v() function to store the result.
1344  *
1345  * \param ctx the current context
1346  * \param d the struct value_desc that describes the enum
1347  * \param v pointer to the tmp declared in the calling glGet*v() function
1348  */
1349 static void
1350 find_custom_value(GLcontext *ctx, const struct value_desc *d, union value *v)
1351 {
1352    struct gl_buffer_object *buffer_obj;
1353    struct gl_client_array *array;
1354    GLuint unit, *p;
1355
1356    switch (d->pname) {
1357    case GL_TEXTURE_1D:
1358    case GL_TEXTURE_2D:
1359    case GL_TEXTURE_3D:
1360    case GL_TEXTURE_1D_ARRAY_EXT:
1361    case GL_TEXTURE_2D_ARRAY_EXT:
1362    case GL_TEXTURE_CUBE_MAP_ARB:
1363    case GL_TEXTURE_RECTANGLE_NV:
1364       v->value_bool = _mesa_IsEnabled(d->pname);
1365       break;
1366
1367    case GL_LINE_STIPPLE_PATTERN:
1368       /* This is the only GLushort, special case it here by promoting
1369        * to an int rather than introducing a new type. */
1370       v->value_int = ctx->Line.StipplePattern;
1371       break;
1372
1373    case GL_CURRENT_RASTER_TEXTURE_COORDS:
1374       unit = ctx->Texture.CurrentUnit;
1375       v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
1376       v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
1377       v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
1378       v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
1379       break;
1380
1381    case GL_CURRENT_TEXTURE_COORDS:
1382       unit = ctx->Texture.CurrentUnit;
1383       v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
1384       v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
1385       v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
1386       v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
1387       break;
1388
1389    case GL_COLOR_WRITEMASK:
1390       v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
1391       v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
1392       v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
1393       v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
1394       break;
1395
1396    case GL_EDGE_FLAG:
1397       v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
1398       break;
1399
1400    case GL_READ_BUFFER:
1401       v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
1402       break;
1403
1404    case GL_MAP2_GRID_DOMAIN:
1405       v->value_float_4[0] = ctx->Eval.MapGrid2u1;
1406       v->value_float_4[1] = ctx->Eval.MapGrid2u2;
1407       v->value_float_4[2] = ctx->Eval.MapGrid2v1;
1408       v->value_float_4[3] = ctx->Eval.MapGrid2v2;
1409       break;
1410
1411    case GL_TEXTURE_STACK_DEPTH:
1412       unit = ctx->Texture.CurrentUnit;
1413       v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
1414       break;
1415    case GL_TEXTURE_MATRIX:
1416       unit = ctx->Texture.CurrentUnit;
1417       v->value_matrix = ctx->TextureMatrixStack[unit].Top;
1418       break;
1419
1420    case GL_TEXTURE_COORD_ARRAY:
1421    case GL_TEXTURE_COORD_ARRAY_SIZE:
1422    case GL_TEXTURE_COORD_ARRAY_TYPE:
1423    case GL_TEXTURE_COORD_ARRAY_STRIDE:
1424       array = &ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture];
1425       v->value_int = *(GLuint *) ((char *) array + d->offset);
1426       break;
1427
1428    case GL_ACTIVE_TEXTURE_ARB:
1429       v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
1430       break;
1431    case GL_CLIENT_ACTIVE_TEXTURE_ARB:
1432       v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
1433       break;
1434
1435    case GL_MODELVIEW_STACK_DEPTH:
1436    case GL_PROJECTION_STACK_DEPTH:
1437    case GL_COLOR_MATRIX_STACK_DEPTH_SGI:
1438       v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
1439       break;
1440
1441    case GL_MAX_TEXTURE_SIZE:
1442    case GL_MAX_3D_TEXTURE_SIZE:
1443    case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
1444       p = (GLuint *) ((char *) ctx + d->offset);
1445       v->value_int = 1 << (*p - 1);
1446       break;
1447
1448    case GL_SCISSOR_BOX:
1449       v->value_int_4[0] = ctx->Scissor.X;
1450       v->value_int_4[1] = ctx->Scissor.Y;
1451       v->value_int_4[2] = ctx->Scissor.Width;
1452       v->value_int_4[3] = ctx->Scissor.Height;
1453       break;
1454
1455    case GL_LIST_INDEX:
1456       v->value_int =
1457          ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
1458       break;
1459    case GL_LIST_MODE:
1460       if (!ctx->CompileFlag)
1461          v->value_enum = 0;
1462       else if (ctx->ExecuteFlag)
1463          v->value_enum = GL_COMPILE_AND_EXECUTE;
1464       else
1465          v->value_enum = GL_COMPILE;
1466       break;
1467
1468    case GL_VIEWPORT:
1469       v->value_int_4[0] = ctx->Viewport.X;
1470       v->value_int_4[1] = ctx->Viewport.Y;
1471       v->value_int_4[2] = ctx->Viewport.Width;
1472       v->value_int_4[3] = ctx->Viewport.Height;
1473       break;
1474
1475    case GL_ACTIVE_STENCIL_FACE_EXT:
1476       v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
1477       break;
1478
1479    case GL_STENCIL_FAIL:
1480       v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
1481       break;
1482    case GL_STENCIL_FUNC:
1483       v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
1484       break;
1485    case GL_STENCIL_PASS_DEPTH_FAIL:
1486       v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
1487       break;
1488    case GL_STENCIL_PASS_DEPTH_PASS:
1489       v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
1490       break;
1491    case GL_STENCIL_REF:
1492       v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
1493       break;
1494    case GL_STENCIL_VALUE_MASK:
1495       v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
1496       break;
1497    case GL_STENCIL_WRITEMASK:
1498       v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
1499       break;
1500
1501    case GL_NUM_EXTENSIONS:
1502       v->value_int = _mesa_get_extension_count(ctx);
1503       break;
1504
1505    case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
1506       v->value_int = _mesa_get_color_read_type(ctx);
1507       break;
1508    case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
1509       v->value_int = _mesa_get_color_read_format(ctx);
1510       break;
1511
1512    case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
1513       v->value_int = ctx->CurrentStack->Depth + 1;
1514       break;
1515    case GL_CURRENT_MATRIX_ARB:
1516    case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
1517       v->value_matrix = ctx->CurrentStack->Top;
1518       break;
1519
1520    case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
1521       v->value_int = _mesa_get_compressed_formats(ctx, NULL, GL_FALSE);
1522       break;
1523    case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
1524       v->value_int_n.n =
1525          _mesa_get_compressed_formats(ctx, v->value_int_n.ints, GL_FALSE);
1526       ASSERT(v->value_int_n.n <= 100);
1527       break;
1528
1529    case GL_MAX_VARYING_FLOATS_ARB:
1530       v->value_int = ctx->Const.MaxVarying * 4;
1531       break;
1532
1533    /* Various object names */
1534
1535    case GL_TEXTURE_BINDING_1D:
1536    case GL_TEXTURE_BINDING_2D:
1537    case GL_TEXTURE_BINDING_3D:
1538    case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
1539    case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
1540    case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
1541    case GL_TEXTURE_BINDING_RECTANGLE_NV:
1542       unit = ctx->Texture.CurrentUnit;
1543       v->value_int =
1544          ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
1545       break;
1546
1547    /* GL_ARB_vertex_buffer_object */
1548    case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
1549    case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
1550    case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
1551    case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
1552    case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
1553    case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
1554    case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
1555       buffer_obj = (struct gl_buffer_object *)
1556          ((char *) ctx->Array.ArrayObj + d->offset);
1557       v->value_int = buffer_obj->Name;
1558       break;
1559    case GL_ARRAY_BUFFER_BINDING_ARB:
1560       v->value_int = ctx->Array.ArrayBufferObj->Name;
1561       break;
1562    case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
1563       v->value_int =
1564          ctx->Array.ArrayObj->TexCoord[ctx->Array.ActiveTexture].BufferObj->Name;
1565       break;
1566    case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
1567       v->value_int = ctx->Array.ElementArrayBufferObj->Name;
1568       break;
1569
1570    case GL_FRAGMENT_PROGRAM_BINDING_NV:
1571       v->value_int =
1572          ctx->FragmentProgram.Current ? ctx->FragmentProgram.Current->Base.Id : 0;
1573       break;
1574    case GL_VERTEX_PROGRAM_BINDING_NV:
1575       v->value_int =
1576          ctx->VertexProgram.Current ? ctx->VertexProgram.Current->Base.Id : 0;
1577       break;
1578    case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
1579       v->value_int = ctx->Pack.BufferObj->Name;
1580       break;
1581    case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
1582       v->value_int = ctx->Unpack.BufferObj->Name;
1583       break;
1584    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1585       v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
1586       break;
1587    case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
1588       v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
1589       break;
1590    case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
1591       v->value_int = ctx->TransformFeedback.CurrentObject->Active;
1592       break;
1593    case GL_TRANSFORM_FEEDBACK_BINDING:
1594       v->value_int = ctx->TransformFeedback.CurrentObject->Name;
1595       break;
1596    case GL_CURRENT_PROGRAM:
1597       v->value_int =
1598          ctx->Shader.CurrentProgram ? ctx->Shader.CurrentProgram->Name : 0;
1599       break;
1600    case GL_READ_FRAMEBUFFER_BINDING_EXT:
1601       v->value_int = ctx->ReadBuffer->Name;
1602       break;
1603    case GL_RENDERBUFFER_BINDING_EXT:
1604       v->value_int =
1605          ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
1606       break;
1607    case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
1608       v->value_int = ctx->Array.ArrayObj->PointSize.BufferObj->Name;
1609       break;
1610    }
1611 }
1612
1613 /**
1614  * Check extra constraints on a struct value_desc descriptor
1615  *
1616  * If a struct value_desc has a non-NULL extra pointer, it means that
1617  * there are a number of extra constraints to check or actions to
1618  * perform.  The extras is just an integer array where each integer
1619  * encode different constraints or actions.
1620  *
1621  * \param ctx current context
1622  * \param func name of calling glGet*v() function for error reporting
1623  * \param d the struct value_desc that has the extra constraints
1624  *
1625  * \return GL_FALSE if one of the constraints was not satisfied,
1626  *     otherwise GL_TRUE.
1627  */
1628 static GLboolean
1629 check_extra(GLcontext *ctx, const char *func, const struct value_desc *d)
1630 {
1631    const GLuint version = ctx->VersionMajor * 10 + ctx->VersionMinor;
1632    int total, enabled;
1633    const int *e;
1634
1635    total = 0;
1636    enabled = 0;
1637    for (e = d->extra; *e != EXTRA_END; e++)
1638       switch (*e) {
1639       case EXTRA_VERSION_30:
1640          if (version < 30)
1641             return GL_FALSE;
1642          break;
1643       case EXTRA_VERSION_31:
1644          if (version < 31)
1645             return GL_FALSE;
1646          break;
1647       case EXTRA_VERSION_32:
1648          if (version < 32)
1649             return GL_FALSE;
1650          break;
1651       case EXTRA_NEW_BUFFERS:
1652          if (ctx->NewState & _NEW_BUFFERS)
1653             _mesa_update_state(ctx);
1654          break;
1655       case EXTRA_FLUSH_CURRENT:
1656          FLUSH_CURRENT(ctx, 0);
1657          break;
1658       case EXTRA_VALID_DRAW_BUFFER:
1659          if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1660             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1661                         func, d->pname - GL_DRAW_BUFFER0_ARB);
1662             return GL_FALSE;
1663          }
1664          break;
1665       case EXTRA_VALID_TEXTURE_UNIT:
1666          if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1667             _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1668                         func, ctx->Texture.CurrentUnit);
1669             return GL_FALSE;
1670          }
1671          break;
1672       case EXTRA_END:
1673          break;
1674       default: /* *e is a offset into the extension struct */
1675          total++;
1676          if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1677             enabled++;
1678          break;
1679       }
1680
1681    if (total > 0 && enabled == 0) {
1682       _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1683                   _mesa_lookup_enum_by_nr(d->pname));
1684       return GL_FALSE;
1685    }
1686
1687    return GL_TRUE;
1688 }
1689
1690 static const struct value_desc error_value = { 0, 0, TYPE_INVALID };
1691
1692 /**
1693  * Find the struct value_desc corresponding to the enum 'pname'.
1694  *
1695  * We hash the enum value to get an index into the 'table' array,
1696  * which holds the index in the 'values' array of struct value_desc.
1697  * Once we've found the entry, we do the extra checks, if any, then
1698  * look up the value and return a pointer to it.
1699  *
1700  * If the value has to be computed (for example, it's the result of a
1701  * function call or we need to add 1 to it), we use the tmp 'v' to
1702  * store the result.
1703  *
1704  * \param func name of glGet*v() func for error reporting
1705  * \param pname the enum value we're looking up
1706  * \param p is were we return the pointer to the value
1707  * \param v a tmp union value variable in the calling glGet*v() function
1708  *
1709  * \return the struct value_desc corresponding to the enum or a struct
1710  *     value_desc of TYPE_INVALID if not found.  This lets the calling
1711  *     glGet*v() function jump right into a switch statement and
1712  *     handle errors there instead of having to check for NULL.
1713  */
1714 static const struct value_desc *
1715 find_value(const char *func, GLenum pname, void **p, union value *v)
1716 {
1717    GET_CURRENT_CONTEXT(ctx);
1718    struct gl_texture_unit *unit;
1719    int mask, hash;
1720    const struct value_desc *d;
1721
1722    mask = Elements(table) - 1;
1723    hash = (pname * prime_factor);
1724    while (1) {
1725       d = &values[table[hash & mask]];
1726       if (likely(d->pname == pname))
1727          break;
1728
1729       /* If the enum isn't valid, the hash walk ends with index 0,
1730        * which is the API mask entry at the beginning of values[]. */
1731       if (d->type == TYPE_API_MASK) {
1732          _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1733                      _mesa_lookup_enum_by_nr(pname));
1734          return &error_value;
1735       }
1736       hash += prime_step;
1737    }
1738
1739    if (unlikely(d->extra && !check_extra(ctx, func, d)))
1740       return &error_value;
1741
1742    switch (d->location) {
1743    case LOC_BUFFER:
1744       *p = ((char *) ctx->DrawBuffer + d->offset);
1745       return d;
1746    case LOC_CONTEXT:
1747       *p = ((char *) ctx + d->offset);
1748       return d;
1749    case LOC_ARRAY:
1750       *p = ((char *) ctx->Array.ArrayObj + d->offset);
1751       return d;
1752    case LOC_TEXUNIT:
1753       unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1754       *p = ((char *) unit + d->offset);
1755       return d;
1756    case LOC_CUSTOM:
1757       find_custom_value(ctx, d, v);
1758       *p = v;
1759       return d;
1760    default:
1761       assert(0);
1762       break;
1763    }
1764
1765    /* silence warning */
1766    return &error_value;
1767 }
1768
1769 static const int transpose[] = {
1770    0, 4,  8, 12,
1771    1, 5,  9, 13,
1772    2, 6, 10, 14,
1773    3, 7, 11, 15
1774 };
1775
1776 void GLAPIENTRY
1777 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1778 {
1779    const struct value_desc *d;
1780    union value v;
1781    GLmatrix *m;
1782    int shift, i;
1783    void *p;
1784
1785    d = find_value("glGetBooleanv", pname, &p, &v);
1786    switch (d->type) {
1787    case TYPE_INVALID:
1788       break;
1789    case TYPE_CONST:
1790       params[0] = INT_TO_BOOLEAN(d->offset);
1791       break;
1792
1793    case TYPE_FLOAT_4:
1794    case TYPE_FLOATN_4:
1795       params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1796    case TYPE_FLOAT_3:
1797    case TYPE_FLOATN_3:
1798       params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1799    case TYPE_FLOAT_2:
1800    case TYPE_FLOATN_2:
1801       params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1802    case TYPE_FLOAT:
1803    case TYPE_FLOATN:
1804       params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1805       break;
1806
1807    case TYPE_DOUBLEN:
1808       params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1809       break;
1810
1811    case TYPE_INT_4:
1812       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1813    case TYPE_INT_3:
1814       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1815    case TYPE_INT_2:
1816    case TYPE_ENUM_2:
1817       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1818    case TYPE_INT:
1819    case TYPE_ENUM:
1820       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1821       break;
1822
1823    case TYPE_INT_N:
1824       for (i = 0; i < v.value_int_n.n; i++)
1825          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1826       break;
1827
1828    case TYPE_INT64:
1829       params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1830       break;
1831
1832    case TYPE_BOOLEAN:
1833       params[0] = ((GLboolean*) p)[0];
1834       break;
1835
1836    case TYPE_MATRIX:
1837       m = *(GLmatrix **) p;
1838       for (i = 0; i < 16; i++)
1839          params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1840       break;
1841
1842    case TYPE_MATRIX_T:
1843       m = *(GLmatrix **) p;
1844       for (i = 0; i < 16; i++)
1845          params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1846       break;
1847
1848    case TYPE_BIT_0:
1849    case TYPE_BIT_1:
1850    case TYPE_BIT_2:
1851    case TYPE_BIT_3:
1852    case TYPE_BIT_4:
1853    case TYPE_BIT_5:
1854       shift = d->type - TYPE_BIT_0;
1855       params[0] = (*(GLbitfield *) p >> shift) & 1;
1856       break;
1857    }
1858 }
1859
1860 void GLAPIENTRY
1861 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1862 {
1863    const struct value_desc *d;
1864    union value v;
1865    GLmatrix *m;
1866    int shift, i;
1867    void *p;
1868
1869    d = find_value("glGetFloatv", pname, &p, &v);
1870    switch (d->type) {
1871    case TYPE_INVALID:
1872       break;
1873    case TYPE_CONST:
1874       params[0] = (GLfloat) d->offset;
1875       break;
1876
1877    case TYPE_FLOAT_4:
1878    case TYPE_FLOATN_4:
1879       params[3] = ((GLfloat *) p)[3];
1880    case TYPE_FLOAT_3:
1881    case TYPE_FLOATN_3:
1882       params[2] = ((GLfloat *) p)[2];
1883    case TYPE_FLOAT_2:
1884    case TYPE_FLOATN_2:
1885       params[1] = ((GLfloat *) p)[1];
1886    case TYPE_FLOAT:
1887    case TYPE_FLOATN:
1888       params[0] = ((GLfloat *) p)[0];
1889       break;
1890
1891    case TYPE_DOUBLEN:
1892       params[0] = ((GLdouble *) p)[0];
1893       break;
1894
1895    case TYPE_INT_4:
1896       params[3] = (GLfloat) (((GLint *) p)[3]);
1897    case TYPE_INT_3:
1898       params[2] = (GLfloat) (((GLint *) p)[2]);
1899    case TYPE_INT_2:
1900    case TYPE_ENUM_2:
1901       params[1] = (GLfloat) (((GLint *) p)[1]);
1902    case TYPE_INT:
1903    case TYPE_ENUM:
1904       params[0] = (GLfloat) (((GLint *) p)[0]);
1905       break;
1906
1907    case TYPE_INT_N:
1908       for (i = 0; i < v.value_int_n.n; i++)
1909          params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1910       break;
1911
1912    case TYPE_INT64:
1913       params[0] = ((GLint64 *) p)[0];
1914       break;
1915
1916    case TYPE_BOOLEAN:
1917       params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1918       break;
1919
1920    case TYPE_MATRIX:
1921       m = *(GLmatrix **) p;
1922       for (i = 0; i < 16; i++)
1923          params[i] = m->m[i];
1924       break;
1925
1926    case TYPE_MATRIX_T:
1927       m = *(GLmatrix **) p;
1928       for (i = 0; i < 16; i++)
1929          params[i] = m->m[transpose[i]];
1930       break;
1931
1932    case TYPE_BIT_0:
1933    case TYPE_BIT_1:
1934    case TYPE_BIT_2:
1935    case TYPE_BIT_3:
1936    case TYPE_BIT_4:
1937    case TYPE_BIT_5:
1938       shift = d->type - TYPE_BIT_0;
1939       params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1940       break;
1941    }
1942 }
1943
1944 void GLAPIENTRY
1945 _mesa_GetIntegerv(GLenum pname, GLint *params)
1946 {
1947    const struct value_desc *d;
1948    union value v;
1949    GLmatrix *m;
1950    int shift, i;
1951    void *p;
1952
1953    d = find_value("glGetIntegerv", pname, &p, &v);
1954    switch (d->type) {
1955    case TYPE_INVALID:
1956       break;
1957    case TYPE_CONST:
1958       params[0] = d->offset;
1959       break;
1960
1961    case TYPE_FLOAT_4:
1962       params[3] = IROUND(((GLfloat *) p)[3]);
1963    case TYPE_FLOAT_3:
1964       params[2] = IROUND(((GLfloat *) p)[2]);
1965    case TYPE_FLOAT_2:
1966       params[1] = IROUND(((GLfloat *) p)[1]);
1967    case TYPE_FLOAT:
1968       params[0] = IROUND(((GLfloat *) p)[0]);
1969       break;
1970
1971    case TYPE_FLOATN_4:
1972       params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1973    case TYPE_FLOATN_3:
1974       params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1975    case TYPE_FLOATN_2:
1976       params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1977    case TYPE_FLOATN:
1978       params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1979       break;
1980
1981    case TYPE_DOUBLEN:
1982       params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1983       break;
1984
1985    case TYPE_INT_4:
1986       params[3] = ((GLint *) p)[3];
1987    case TYPE_INT_3:
1988       params[2] = ((GLint *) p)[2];
1989    case TYPE_INT_2:
1990    case TYPE_ENUM_2:
1991       params[1] = ((GLint *) p)[1];
1992    case TYPE_INT:
1993    case TYPE_ENUM:
1994       params[0] = ((GLint *) p)[0];
1995       break;
1996
1997    case TYPE_INT_N:
1998       for (i = 0; i < v.value_int_n.n; i++)
1999          params[i] = v.value_int_n.ints[i];
2000       break;
2001
2002    case TYPE_INT64:
2003       params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
2004       break;
2005
2006    case TYPE_BOOLEAN:
2007       params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
2008       break;
2009
2010    case TYPE_MATRIX:
2011       m = *(GLmatrix **) p;
2012       for (i = 0; i < 16; i++)
2013          params[i] = FLOAT_TO_INT(m->m[i]);
2014       break;
2015
2016    case TYPE_MATRIX_T:
2017       m = *(GLmatrix **) p;
2018       for (i = 0; i < 16; i++)
2019          params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
2020       break;
2021
2022    case TYPE_BIT_0:
2023    case TYPE_BIT_1:
2024    case TYPE_BIT_2:
2025    case TYPE_BIT_3:
2026    case TYPE_BIT_4:
2027    case TYPE_BIT_5:
2028       shift = d->type - TYPE_BIT_0;
2029       params[0] = (*(GLbitfield *) p >> shift) & 1;
2030       break;
2031    }
2032 }
2033
2034 #if FEATURE_ARB_sync
2035 void GLAPIENTRY
2036 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
2037 {
2038    const struct value_desc *d;
2039    union value v;
2040    GLmatrix *m;
2041    int shift, i;
2042    void *p;
2043
2044    d = find_value("glGetInteger64v", pname, &p, &v);
2045    switch (d->type) {
2046    case TYPE_INVALID:
2047       break;
2048    case TYPE_CONST:
2049       params[0] = d->offset;
2050       break;
2051
2052    case TYPE_FLOAT_4:
2053       params[3] = IROUND64(((GLfloat *) p)[3]);
2054    case TYPE_FLOAT_3:
2055       params[2] = IROUND64(((GLfloat *) p)[2]);
2056    case TYPE_FLOAT_2:
2057       params[1] = IROUND64(((GLfloat *) p)[1]);
2058    case TYPE_FLOAT:
2059       params[0] = IROUND64(((GLfloat *) p)[0]);
2060       break;
2061
2062    case TYPE_FLOATN_4:
2063       params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
2064    case TYPE_FLOATN_3:
2065       params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
2066    case TYPE_FLOATN_2:
2067       params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
2068    case TYPE_FLOATN:
2069       params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
2070       break;
2071
2072    case TYPE_DOUBLEN:
2073       params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
2074       break;
2075
2076    case TYPE_INT_4:
2077       params[3] = ((GLint *) p)[3];
2078    case TYPE_INT_3:
2079       params[2] = ((GLint *) p)[2];
2080    case TYPE_INT_2:
2081    case TYPE_ENUM_2:
2082       params[1] = ((GLint *) p)[1];
2083    case TYPE_INT:
2084    case TYPE_ENUM:
2085       params[0] = ((GLint *) p)[0];
2086       break;
2087
2088    case TYPE_INT_N:
2089       for (i = 0; i < v.value_int_n.n; i++)
2090          params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
2091       break;
2092
2093    case TYPE_INT64:
2094       params[0] = ((GLint64 *) p)[0];
2095       break;
2096
2097    case TYPE_BOOLEAN:
2098       params[0] = ((GLboolean*) p)[0];
2099       break;
2100
2101    case TYPE_MATRIX:
2102       m = *(GLmatrix **) p;
2103       for (i = 0; i < 16; i++)
2104          params[i] = FLOAT_TO_INT64(m->m[i]);
2105       break;
2106
2107    case TYPE_MATRIX_T:
2108       m = *(GLmatrix **) p;
2109       for (i = 0; i < 16; i++)
2110          params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
2111       break;
2112
2113    case TYPE_BIT_0:
2114    case TYPE_BIT_1:
2115    case TYPE_BIT_2:
2116    case TYPE_BIT_3:
2117    case TYPE_BIT_4:
2118    case TYPE_BIT_5:
2119       shift = d->type - TYPE_BIT_0;
2120       params[0] = (*(GLbitfield *) p >> shift) & 1;
2121       break;
2122    }
2123 }
2124 #endif /* FEATURE_ARB_sync */
2125
2126 void GLAPIENTRY
2127 _mesa_GetDoublev(GLenum pname, GLdouble *params)
2128 {
2129    const struct value_desc *d;
2130    union value v;
2131    GLmatrix *m;
2132    int shift, i;
2133    void *p;
2134
2135    d = find_value("glGetDoublev", pname, &p, &v);
2136    switch (d->type) {
2137    case TYPE_INVALID:
2138       break;
2139    case TYPE_CONST:
2140       params[0] = d->offset;
2141       break;
2142
2143    case TYPE_FLOAT_4:
2144    case TYPE_FLOATN_4:
2145       params[3] = ((GLfloat *) p)[3];
2146    case TYPE_FLOAT_3:
2147    case TYPE_FLOATN_3:
2148       params[2] = ((GLfloat *) p)[2];
2149    case TYPE_FLOAT_2:
2150    case TYPE_FLOATN_2:
2151       params[1] = ((GLfloat *) p)[1];
2152    case TYPE_FLOAT:
2153    case TYPE_FLOATN:
2154       params[0] = ((GLfloat *) p)[0];
2155       break;
2156
2157    case TYPE_DOUBLEN:
2158       params[0] = ((GLdouble *) p)[0];
2159       break;
2160
2161    case TYPE_INT_4:
2162       params[3] = ((GLint *) p)[3];
2163    case TYPE_INT_3:
2164       params[2] = ((GLint *) p)[2];
2165    case TYPE_INT_2:
2166    case TYPE_ENUM_2:
2167       params[1] = ((GLint *) p)[1];
2168    case TYPE_INT:
2169    case TYPE_ENUM:
2170       params[0] = ((GLint *) p)[0];
2171       break;
2172
2173    case TYPE_INT_N:
2174       for (i = 0; i < v.value_int_n.n; i++)
2175          params[i] = v.value_int_n.ints[i];
2176       break;
2177
2178    case TYPE_INT64:
2179       params[0] = ((GLint64 *) p)[0];
2180       break;
2181
2182    case TYPE_BOOLEAN:
2183       params[0] = *(GLboolean*) p;
2184       break;
2185
2186    case TYPE_MATRIX:
2187       m = *(GLmatrix **) p;
2188       for (i = 0; i < 16; i++)
2189          params[i] = m->m[i];
2190       break;
2191
2192    case TYPE_MATRIX_T:
2193       m = *(GLmatrix **) p;
2194       for (i = 0; i < 16; i++)
2195          params[i] = m->m[transpose[i]];
2196       break;
2197
2198    case TYPE_BIT_0:
2199    case TYPE_BIT_1:
2200    case TYPE_BIT_2:
2201    case TYPE_BIT_3:
2202    case TYPE_BIT_4:
2203    case TYPE_BIT_5:
2204       shift = d->type - TYPE_BIT_0;
2205       params[0] = (*(GLbitfield *) p >> shift) & 1;
2206       break;
2207    }
2208 }
2209
2210 static enum value_type
2211 find_value_indexed(const char *func, GLenum pname, int index, union value *v)
2212 {
2213    GET_CURRENT_CONTEXT(ctx);
2214
2215    switch (pname) {
2216
2217    case GL_BLEND:
2218       if (index >= ctx->Const.MaxDrawBuffers)
2219          goto invalid_value;
2220       if (!ctx->Extensions.EXT_draw_buffers2)
2221          goto invalid_enum;
2222       v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
2223       return TYPE_INT;
2224
2225    case GL_COLOR_WRITEMASK:
2226       if (index >= ctx->Const.MaxDrawBuffers)
2227          goto invalid_value;
2228       if (!ctx->Extensions.EXT_draw_buffers2)
2229          goto invalid_enum;
2230       v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
2231       v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
2232       v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
2233       v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
2234       return TYPE_INT_4;
2235
2236    case GL_TRANSFORM_FEEDBACK_BUFFER_START:
2237       if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
2238          goto invalid_value;
2239       if (!ctx->Extensions.EXT_transform_feedback)
2240          goto invalid_enum;
2241       v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
2242       return TYPE_INT64;
2243
2244    case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
2245       if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
2246          goto invalid_value;
2247       if (!ctx->Extensions.EXT_transform_feedback)
2248          goto invalid_enum;
2249       v->value_int64 = ctx->TransformFeedback.CurrentObject->Size[index];
2250       return TYPE_INT64;
2251
2252    case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
2253       if (index >= ctx->Const.MaxTransformFeedbackSeparateAttribs)
2254          goto invalid_value;
2255       if (!ctx->Extensions.EXT_transform_feedback)
2256          goto invalid_enum;
2257       v->value_int = ctx->TransformFeedback.CurrentObject->Buffers[index]->Name;
2258       return TYPE_INT;
2259    }
2260
2261  invalid_enum:
2262    _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
2263                _mesa_lookup_enum_by_nr(pname));
2264    return TYPE_INVALID;
2265  invalid_value:
2266    _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
2267                _mesa_lookup_enum_by_nr(pname));
2268    return TYPE_INVALID;
2269 }
2270
2271 void GLAPIENTRY
2272 _mesa_GetBooleanIndexedv( GLenum pname, GLuint index, GLboolean *params )
2273 {
2274    union value v;
2275
2276    switch (find_value_indexed("glGetBooleanIndexedv", pname, index, &v)) {
2277    case TYPE_INT:
2278       params[0] = INT_TO_BOOLEAN(v.value_int);
2279       break;
2280    case TYPE_INT_4:
2281       params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2282       params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2283       params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2284       params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2285       break;
2286    case TYPE_INT64:
2287       params[0] = INT64_TO_BOOLEAN(v.value_int);
2288       break;
2289    default:
2290       assert(0);
2291    }
2292 }
2293
2294 void GLAPIENTRY
2295 _mesa_GetIntegerIndexedv( GLenum pname, GLuint index, GLint *params )
2296 {
2297    union value v;
2298
2299    switch (find_value_indexed("glGetIntegerIndexedv", pname, index, &v)) {
2300    case TYPE_INT:
2301       params[0] = v.value_int;
2302       break;
2303    case TYPE_INT_4:
2304       params[0] = v.value_int_4[0];
2305       params[1] = v.value_int_4[1];
2306       params[2] = v.value_int_4[2];
2307       params[3] = v.value_int_4[3];
2308       break;
2309    case TYPE_INT64:
2310       params[0] = INT64_TO_INT(v.value_int);
2311       break;
2312    default:
2313       assert(0);
2314    }
2315 }
2316
2317 #if FEATURE_ARB_sync
2318 void GLAPIENTRY
2319 _mesa_GetInteger64Indexedv( GLenum pname, GLuint index, GLint64 *params )
2320 {
2321    union value v;
2322
2323    switch (find_value_indexed("glGetIntegerIndexedv", pname, index, &v)) {
2324    case TYPE_INT:
2325       params[0] = v.value_int;
2326       break;
2327    case TYPE_INT_4:
2328       params[0] = v.value_int_4[0];
2329       params[1] = v.value_int_4[1];
2330       params[2] = v.value_int_4[2];
2331       params[3] = v.value_int_4[3];
2332       break;
2333    case TYPE_INT64:
2334       params[0] = v.value_int;
2335       break;
2336    default:
2337       assert(0);
2338    }
2339 }
2340 #endif /* FEATURE_ARB_sync */
2341
2342 #if FEATURE_ES1
2343 void GLAPIENTRY
2344 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2345 {
2346    const struct value_desc *d;
2347    union value v;
2348    GLmatrix *m;
2349    int shift, i;
2350    void *p;
2351
2352    d = find_value("glGetDoublev", pname, &p, &v);
2353    switch (d->type) {
2354    case TYPE_INVALID:
2355       break;
2356    case TYPE_CONST:
2357       params[0] = INT_TO_FIXED(d->offset);
2358       break;
2359
2360    case TYPE_FLOAT_4:
2361    case TYPE_FLOATN_4:
2362       params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2363    case TYPE_FLOAT_3:
2364    case TYPE_FLOATN_3:
2365       params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2366    case TYPE_FLOAT_2:
2367    case TYPE_FLOATN_2:
2368       params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2369    case TYPE_FLOAT:
2370    case TYPE_FLOATN:
2371       params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2372       break;
2373
2374    case TYPE_DOUBLEN:
2375       params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2376       break;
2377
2378    case TYPE_INT_4:
2379       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2380    case TYPE_INT_3:
2381       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2382    case TYPE_INT_2:
2383    case TYPE_ENUM_2:
2384       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2385    case TYPE_INT:
2386    case TYPE_ENUM:
2387       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2388       break;
2389
2390    case TYPE_INT_N:
2391       for (i = 0; i < v.value_int_n.n; i++)
2392          params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2393       break;
2394
2395    case TYPE_INT64:
2396       params[0] = ((GLint64 *) p)[0];
2397       break;
2398
2399    case TYPE_BOOLEAN:
2400       params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2401       break;
2402
2403    case TYPE_MATRIX:
2404       m = *(GLmatrix **) p;
2405       for (i = 0; i < 16; i++)
2406          params[i] = FLOAT_TO_FIXED(m->m[i]);
2407       break;
2408
2409    case TYPE_MATRIX_T:
2410       m = *(GLmatrix **) p;
2411       for (i = 0; i < 16; i++)
2412          params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2413       break;
2414
2415    case TYPE_BIT_0:
2416    case TYPE_BIT_1:
2417    case TYPE_BIT_2:
2418    case TYPE_BIT_3:
2419    case TYPE_BIT_4:
2420    case TYPE_BIT_5:
2421       shift = d->type - TYPE_BIT_0;
2422       params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2423       break;
2424    }
2425 }
2426 #endif