src/mesa/main/mtypes.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.7
   4  *
   5  * Copyright (C) 1999-2008  Brian Paul   All Rights Reserved.
   6  * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included
  16  * in all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  22  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  23  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24  */
  25
  26 /**
  27  * \file mtypes.h
  28  * Main Mesa data structures.
  29  *
  30  * Please try to mark derived values with a leading underscore ('_').
  31  */
  32
  33 #ifndef MTYPES_H
  34 #define MTYPES_H
  35
  36
  37 #include "main/glheader.h"
  38 #include "main/config.h"
  39 #include "main/compiler.h"
  40 #include "main/mfeatures.h"
  41 #include "glapi/glapi.h"
  42 #include "math/m_matrix.h"      /* GLmatrix */
  43 #include "main/simple_list.h"   /* struct simple_node */
  44
  45 /**
  46  * Internal token
  47  *  Must be simply different than GL_VERTEX_PROGRAM
  48  *    and GL_FRAGMENT_PROGRAM_ARB
  49  *  FIXME: this will have to be a real GL extension
  50  */
  51 #define MESA_GEOMETRY_PROGRAM 0x9999
  52
  53 /**
  54  * Color channel data type.
  55  */
  56 #if CHAN_BITS == 8
  57    typedef GLubyte GLchan;
  58 #define CHAN_MAX 255
  59 #define CHAN_MAXF 255.0F
  60 #define CHAN_TYPE GL_UNSIGNED_BYTE
  61 #elif CHAN_BITS == 16
  62    typedef GLushort GLchan;
  63 #define CHAN_MAX 65535
  64 #define CHAN_MAXF 65535.0F
  65 #define CHAN_TYPE GL_UNSIGNED_SHORT
  66 #elif CHAN_BITS == 32
  67    typedef GLfloat GLchan;
  68 #define CHAN_MAX 1.0
  69 #define CHAN_MAXF 1.0F
  70 #define CHAN_TYPE GL_FLOAT
  71 #else
  72 #error "illegal number of color channel bits"
  73 #endif
  74
  75
  76 /**
  77  * Stencil buffer data type.
  78  */
  79 #if STENCIL_BITS==8
  80    typedef GLubyte GLstencil;
  81 #elif STENCIL_BITS==16
  82    typedef GLushort GLstencil;
  83 #else
  84 #  error "illegal number of stencil bits"
  85 #endif
  86
  87
  88 /**
  89  * \name 64-bit extension of GLbitfield.
  90  */
  91 /*@{*/
  92 typedef GLuint64 GLbitfield64;
  93
  94 #define BITFIELD64_ONE         1ULL
  95 #define BITFIELD64_ALLONES     ~0ULL
  96
  97 /** Set a single bit */
  98 #define BITFIELD64_BIT(b)      (BITFIELD64_ONE << (b))
  99
 100 /** Set a mask of the least significant \c b bits */
 101 #define BITFIELD64_MASK(b)     (((b) >= 64) ? BITFIELD64_ALLONES : \
 102                                 (BITFIELD64_BIT(b) - 1))
 103
 104 /**
 105  * Set all bits from l (low bit) to h (high bit), inclusive.
 106  *
 107  * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
 108  */
 109 #define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
 110 /*@}*/
 111
 112
 113 /**
 114  * \name Some forward type declarations
 115  */
 116 /*@{*/
 117 struct _mesa_HashTable;
 118 struct gl_attrib_node;
 119 struct gl_list_extensions;
 120 struct gl_meta_state;
 121 struct gl_pixelstore_attrib;
 122 struct gl_program_cache;
 123 struct gl_texture_format;
 124 struct gl_texture_image;
 125 struct gl_texture_object;
 126 struct st_context;
 127 typedef struct __GLcontextRec GLcontext;
 128 typedef struct __GLcontextModesRec GLvisual;
 129 typedef struct gl_framebuffer GLframebuffer;
 130 /*@}*/
 131
 132
 133
 134 /**
 135  * Indexes for vertex program attributes.
 136  * GL_NV_vertex_program aliases generic attributes over the conventional
 137  * attributes.  In GL_ARB_vertex_program shader the aliasing is optional.
 138  * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
 139  * generic attributes are distinct/separate).
 140  */
 141 typedef enum
 142 {
 143    VERT_ATTRIB_POS = 0,
 144    VERT_ATTRIB_WEIGHT = 1,
 145    VERT_ATTRIB_NORMAL = 2,
 146    VERT_ATTRIB_COLOR0 = 3,
 147    VERT_ATTRIB_COLOR1 = 4,
 148    VERT_ATTRIB_FOG = 5,
 149    VERT_ATTRIB_COLOR_INDEX = 6,
 150    VERT_ATTRIB_POINT_SIZE = 6,  /*alias*/
 151    VERT_ATTRIB_EDGEFLAG = 7,
 152    VERT_ATTRIB_TEX0 = 8,
 153    VERT_ATTRIB_TEX1 = 9,
 154    VERT_ATTRIB_TEX2 = 10,
 155    VERT_ATTRIB_TEX3 = 11,
 156    VERT_ATTRIB_TEX4 = 12,
 157    VERT_ATTRIB_TEX5 = 13,
 158    VERT_ATTRIB_TEX6 = 14,
 159    VERT_ATTRIB_TEX7 = 15,
 160    VERT_ATTRIB_GENERIC0 = 16,
 161    VERT_ATTRIB_GENERIC1 = 17,
 162    VERT_ATTRIB_GENERIC2 = 18,
 163    VERT_ATTRIB_GENERIC3 = 19,
 164    VERT_ATTRIB_GENERIC4 = 20,
 165    VERT_ATTRIB_GENERIC5 = 21,
 166    VERT_ATTRIB_GENERIC6 = 22,
 167    VERT_ATTRIB_GENERIC7 = 23,
 168    VERT_ATTRIB_GENERIC8 = 24,
 169    VERT_ATTRIB_GENERIC9 = 25,
 170    VERT_ATTRIB_GENERIC10 = 26,
 171    VERT_ATTRIB_GENERIC11 = 27,
 172    VERT_ATTRIB_GENERIC12 = 28,
 173    VERT_ATTRIB_GENERIC13 = 29,
 174    VERT_ATTRIB_GENERIC14 = 30,
 175    VERT_ATTRIB_GENERIC15 = 31,
 176    VERT_ATTRIB_MAX = 32
 177 } gl_vert_attrib;
 178
 179 /**
 180  * Bitflags for vertex attributes.
 181  * These are used in bitfields in many places.
 182  */
 183 /*@{*/
 184 #define VERT_BIT_POS         (1 << VERT_ATTRIB_POS)
 185 #define VERT_BIT_WEIGHT      (1 << VERT_ATTRIB_WEIGHT)
 186 #define VERT_BIT_NORMAL      (1 << VERT_ATTRIB_NORMAL)
 187 #define VERT_BIT_COLOR0      (1 << VERT_ATTRIB_COLOR0)
 188 #define VERT_BIT_COLOR1      (1 << VERT_ATTRIB_COLOR1)
 189 #define VERT_BIT_FOG         (1 << VERT_ATTRIB_FOG)
 190 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
 191 #define VERT_BIT_EDGEFLAG    (1 << VERT_ATTRIB_EDGEFLAG)
 192 #define VERT_BIT_TEX0        (1 << VERT_ATTRIB_TEX0)
 193 #define VERT_BIT_TEX1        (1 << VERT_ATTRIB_TEX1)
 194 #define VERT_BIT_TEX2        (1 << VERT_ATTRIB_TEX2)
 195 #define VERT_BIT_TEX3        (1 << VERT_ATTRIB_TEX3)
 196 #define VERT_BIT_TEX4        (1 << VERT_ATTRIB_TEX4)
 197 #define VERT_BIT_TEX5        (1 << VERT_ATTRIB_TEX5)
 198 #define VERT_BIT_TEX6        (1 << VERT_ATTRIB_TEX6)
 199 #define VERT_BIT_TEX7        (1 << VERT_ATTRIB_TEX7)
 200 #define VERT_BIT_GENERIC0    (1 << VERT_ATTRIB_GENERIC0)
 201 #define VERT_BIT_GENERIC1    (1 << VERT_ATTRIB_GENERIC1)
 202 #define VERT_BIT_GENERIC2    (1 << VERT_ATTRIB_GENERIC2)
 203 #define VERT_BIT_GENERIC3    (1 << VERT_ATTRIB_GENERIC3)
 204 #define VERT_BIT_GENERIC4    (1 << VERT_ATTRIB_GENERIC4)
 205 #define VERT_BIT_GENERIC5    (1 << VERT_ATTRIB_GENERIC5)
 206 #define VERT_BIT_GENERIC6    (1 << VERT_ATTRIB_GENERIC6)
 207 #define VERT_BIT_GENERIC7    (1 << VERT_ATTRIB_GENERIC7)
 208 #define VERT_BIT_GENERIC8    (1 << VERT_ATTRIB_GENERIC8)
 209 #define VERT_BIT_GENERIC9    (1 << VERT_ATTRIB_GENERIC9)
 210 #define VERT_BIT_GENERIC10   (1 << VERT_ATTRIB_GENERIC10)
 211 #define VERT_BIT_GENERIC11   (1 << VERT_ATTRIB_GENERIC11)
 212 #define VERT_BIT_GENERIC12   (1 << VERT_ATTRIB_GENERIC12)
 213 #define VERT_BIT_GENERIC13   (1 << VERT_ATTRIB_GENERIC13)
 214 #define VERT_BIT_GENERIC14   (1 << VERT_ATTRIB_GENERIC14)
 215 #define VERT_BIT_GENERIC15   (1 << VERT_ATTRIB_GENERIC15)
 216
 217 #define VERT_BIT_TEX(u)  (1 << (VERT_ATTRIB_TEX0 + (u)))
 218 #define VERT_BIT_GENERIC(g)  (1 << (VERT_ATTRIB_GENERIC0 + (g)))
 219 /*@}*/
 220
 221
 222 /**
 223  * Indexes for vertex program result attributes
 224  */
 225 typedef enum
 226 {
 227    VERT_RESULT_HPOS = 0,
 228    VERT_RESULT_COL0 = 1,
 229    VERT_RESULT_COL1 = 2,
 230    VERT_RESULT_FOGC = 3,
 231    VERT_RESULT_TEX0 = 4,
 232    VERT_RESULT_TEX1 = 5,
 233    VERT_RESULT_TEX2 = 6,
 234    VERT_RESULT_TEX3 = 7,
 235    VERT_RESULT_TEX4 = 8,
 236    VERT_RESULT_TEX5 = 9,
 237    VERT_RESULT_TEX6 = 10,
 238    VERT_RESULT_TEX7 = 11,
 239    VERT_RESULT_PSIZ = 12,
 240    VERT_RESULT_BFC0 = 13,
 241    VERT_RESULT_BFC1 = 14,
 242    VERT_RESULT_EDGE = 15,
 243    VERT_RESULT_VAR0 = 16,  /**< shader varying */
 244    VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)
 245 } gl_vert_result;
 246
 247
 248 /*********************************************/
 249
 250 /**
 251  * Indexes for geometry program attributes.
 252  */
 253 typedef enum
 254 {
 255    GEOM_ATTRIB_VERTICES = 0, /*gl_VerticesIn*/
 256    GEOM_ATTRIB_POSITION = 1,
 257    GEOM_ATTRIB_COLOR0 = 2,
 258    GEOM_ATTRIB_COLOR1 = 3,
 259    GEOM_ATTRIB_SECONDARY_COLOR0 = 4,
 260    GEOM_ATTRIB_SECONDARY_COLOR1 = 5,
 261    GEOM_ATTRIB_FOG_FRAG_COORD = 6,
 262    GEOM_ATTRIB_POINT_SIZE = 7,
 263    GEOM_ATTRIB_CLIP_VERTEX = 8,
 264    GEOM_ATTRIB_PRIMITIVE_ID = 9,
 265    GEOM_ATTRIB_TEX_COORD = 10,
 266
 267    GEOM_ATTRIB_VAR0 = 16,
 268    GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)
 269 } gl_geom_attrib;
 270
 271 /**
 272  * Bitflags for geometry attributes.
 273  * These are used in bitfields in many places.
 274  */
 275 /*@{*/
 276 #define GEOM_BIT_VERTICES    (1 << GEOM_ATTRIB_VERTICES)
 277 #define GEOM_BIT_COLOR0      (1 << GEOM_ATTRIB_COLOR0)
 278 #define GEOM_BIT_COLOR1      (1 << GEOM_ATTRIB_COLOR1)
 279 #define GEOM_BIT_SCOLOR0     (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
 280 #define GEOM_BIT_SCOLOR1     (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
 281 #define GEOM_BIT_TEX_COORD   (1 << GEOM_ATTRIB_TEX_COORD)
 282 #define GEOM_BIT_FOG_COORD   (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
 283 #define GEOM_BIT_POSITION    (1 << GEOM_ATTRIB_POSITION)
 284 #define GEOM_BIT_POINT_SIDE  (1 << GEOM_ATTRIB_POINT_SIZE)
 285 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
 286 #define GEOM_BIT_PRIM_ID     (1 << GEOM_ATTRIB_PRIMITIVE_ID)
 287 #define GEOM_BIT_VAR0        (1 << GEOM_ATTRIB_VAR0)
 288
 289 #define GEOM_BIT_VAR(g)  (1 << (GEOM_BIT_VAR0 + (g)))
 290 /*@}*/
 291
 292
 293 /**
 294  * Indexes for geometry program result attributes
 295  */
 296 /*@{*/
 297 typedef enum {
 298    GEOM_RESULT_POS  = 0,
 299    GEOM_RESULT_COL0  = 1,
 300    GEOM_RESULT_COL1  = 2,
 301    GEOM_RESULT_SCOL0 = 3,
 302    GEOM_RESULT_SCOL1 = 4,
 303    GEOM_RESULT_FOGC = 5,
 304    GEOM_RESULT_TEX0 = 6,
 305    GEOM_RESULT_TEX1 = 7,
 306    GEOM_RESULT_TEX2 = 8,
 307    GEOM_RESULT_TEX3 = 9,
 308    GEOM_RESULT_TEX4 = 10,
 309    GEOM_RESULT_TEX5 = 11,
 310    GEOM_RESULT_TEX6 = 12,
 311    GEOM_RESULT_TEX7 = 13,
 312    GEOM_RESULT_PSIZ = 14,
 313    GEOM_RESULT_CLPV = 15,
 314    GEOM_RESULT_PRID = 16,
 315    GEOM_RESULT_LAYR = 17,
 316    GEOM_RESULT_VAR0 = 18,  /**< shader varying, should really be 16 */
 317    /* ### we need to -2 because var0 is 18 instead 16 like in the others */
 318    GEOM_RESULT_MAX  =  (GEOM_RESULT_VAR0 + MAX_VARYING - 2)
 319 } gl_geom_result;
 320 /*@}*/
 321
 322 /**
 323  * Indexes for fragment program input attributes.
 324  */
 325 typedef enum
 326 {
 327    FRAG_ATTRIB_WPOS = 0,
 328    FRAG_ATTRIB_COL0 = 1,
 329    FRAG_ATTRIB_COL1 = 2,
 330    FRAG_ATTRIB_FOGC = 3,
 331    FRAG_ATTRIB_TEX0 = 4,
 332    FRAG_ATTRIB_TEX1 = 5,
 333    FRAG_ATTRIB_TEX2 = 6,
 334    FRAG_ATTRIB_TEX3 = 7,
 335    FRAG_ATTRIB_TEX4 = 8,
 336    FRAG_ATTRIB_TEX5 = 9,
 337    FRAG_ATTRIB_TEX6 = 10,
 338    FRAG_ATTRIB_TEX7 = 11,
 339    FRAG_ATTRIB_FACE = 12,  /**< front/back face */
 340    FRAG_ATTRIB_PNTC = 13,  /**< sprite/point coord */
 341    FRAG_ATTRIB_VAR0 = 14,  /**< shader varying */
 342    FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
 343 } gl_frag_attrib;
 344
 345 /**
 346  * Bitflags for fragment program input attributes.
 347  */
 348 /*@{*/
 349 #define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
 350 #define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
 351 #define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
 352 #define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
 353 #define FRAG_BIT_FACE  (1 << FRAG_ATTRIB_FACE)
 354 #define FRAG_BIT_PNTC  (1 << FRAG_ATTRIB_PNTC)
 355 #define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
 356 #define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
 357 #define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
 358 #define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
 359 #define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
 360 #define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
 361 #define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
 362 #define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
 363 #define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
 364
 365 #define FRAG_BIT_TEX(U)  (FRAG_BIT_TEX0 << (U))
 366 #define FRAG_BIT_VAR(V)  (FRAG_BIT_VAR0 << (V))
 367
 368 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|       \
 369                            FRAG_BIT_TEX1|       \
 370                            FRAG_BIT_TEX2|       \
 371                            FRAG_BIT_TEX3|       \
 372                            FRAG_BIT_TEX4|       \
 373                            FRAG_BIT_TEX5|       \
 374                            FRAG_BIT_TEX6|       \
 375                            FRAG_BIT_TEX7)
 376 /*@}*/
 377
 378
 379 /**
 380  * Fragment program results
 381  */
 382 typedef enum
 383 {
 384    FRAG_RESULT_DEPTH = 0,
 385    FRAG_RESULT_COLOR = 1,
 386    FRAG_RESULT_DATA0 = 2,
 387    FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
 388 } gl_frag_result;
 389
 390
 391 /**
 392  * Indexes for all renderbuffers
 393  */
 394 typedef enum
 395 {
 396    /* the four standard color buffers */
 397    BUFFER_FRONT_LEFT,
 398    BUFFER_BACK_LEFT,
 399    BUFFER_FRONT_RIGHT,
 400    BUFFER_BACK_RIGHT,
 401    BUFFER_DEPTH,
 402    BUFFER_STENCIL,
 403    BUFFER_ACCUM,
 404    /* optional aux buffer */
 405    BUFFER_AUX0,
 406    /* generic renderbuffers */
 407    BUFFER_COLOR0,
 408    BUFFER_COLOR1,
 409    BUFFER_COLOR2,
 410    BUFFER_COLOR3,
 411    BUFFER_COLOR4,
 412    BUFFER_COLOR5,
 413    BUFFER_COLOR6,
 414    BUFFER_COLOR7,
 415    BUFFER_COUNT
 416 } gl_buffer_index;
 417
 418 /**
 419  * Bit flags for all renderbuffers
 420  */
 421 #define BUFFER_BIT_FRONT_LEFT   (1 << BUFFER_FRONT_LEFT)
 422 #define BUFFER_BIT_BACK_LEFT    (1 << BUFFER_BACK_LEFT)
 423 #define BUFFER_BIT_FRONT_RIGHT  (1 << BUFFER_FRONT_RIGHT)
 424 #define BUFFER_BIT_BACK_RIGHT   (1 << BUFFER_BACK_RIGHT)
 425 #define BUFFER_BIT_AUX0         (1 << BUFFER_AUX0)
 426 #define BUFFER_BIT_AUX1         (1 << BUFFER_AUX1)
 427 #define BUFFER_BIT_AUX2         (1 << BUFFER_AUX2)
 428 #define BUFFER_BIT_AUX3         (1 << BUFFER_AUX3)
 429 #define BUFFER_BIT_DEPTH        (1 << BUFFER_DEPTH)
 430 #define BUFFER_BIT_STENCIL      (1 << BUFFER_STENCIL)
 431 #define BUFFER_BIT_ACCUM        (1 << BUFFER_ACCUM)
 432 #define BUFFER_BIT_COLOR0       (1 << BUFFER_COLOR0)
 433 #define BUFFER_BIT_COLOR1       (1 << BUFFER_COLOR1)
 434 #define BUFFER_BIT_COLOR2       (1 << BUFFER_COLOR2)
 435 #define BUFFER_BIT_COLOR3       (1 << BUFFER_COLOR3)
 436 #define BUFFER_BIT_COLOR4       (1 << BUFFER_COLOR4)
 437 #define BUFFER_BIT_COLOR5       (1 << BUFFER_COLOR5)
 438 #define BUFFER_BIT_COLOR6       (1 << BUFFER_COLOR6)
 439 #define BUFFER_BIT_COLOR7       (1 << BUFFER_COLOR7)
 440
 441 /**
 442  * Mask of all the color buffer bits (but not accum).
 443  */
 444 #define BUFFER_BITS_COLOR  (BUFFER_BIT_FRONT_LEFT | \
 445                             BUFFER_BIT_BACK_LEFT | \
 446                             BUFFER_BIT_FRONT_RIGHT | \
 447                             BUFFER_BIT_BACK_RIGHT | \
 448                             BUFFER_BIT_AUX0 | \
 449                             BUFFER_BIT_COLOR0 | \
 450                             BUFFER_BIT_COLOR1 | \
 451                             BUFFER_BIT_COLOR2 | \
 452                             BUFFER_BIT_COLOR3 | \
 453                             BUFFER_BIT_COLOR4 | \
 454                             BUFFER_BIT_COLOR5 | \
 455                             BUFFER_BIT_COLOR6 | \
 456                             BUFFER_BIT_COLOR7)
 457
 458
 459 /** The pixel transfer path has three color tables: */
 460 typedef enum
 461 {
 462    COLORTABLE_PRECONVOLUTION,
 463    COLORTABLE_POSTCONVOLUTION,
 464    COLORTABLE_POSTCOLORMATRIX,
 465    COLORTABLE_MAX
 466 } gl_colortable_index;
 467
 468
 469 /**
 470  * Data structure for color tables
 471  */
 472 struct gl_color_table
 473 {
 474    GLenum InternalFormat;      /**< The user-specified format */
 475    GLenum _BaseFormat;         /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
 476    GLuint Size;                /**< number of entries in table */
 477    GLfloat *TableF;            /**< Color table, floating point values */
 478    GLubyte *TableUB;           /**< Color table, ubyte values */
 479    GLubyte RedSize;
 480    GLubyte GreenSize;
 481    GLubyte BlueSize;
 482    GLubyte AlphaSize;
 483    GLubyte LuminanceSize;
 484    GLubyte IntensitySize;
 485 };
 486
 487
 488 /**
 489  * \name Bit flags used for updating material values.
 490  */
 491 /*@{*/
 492 #define MAT_ATTRIB_FRONT_AMBIENT           0
 493 #define MAT_ATTRIB_BACK_AMBIENT            1
 494 #define MAT_ATTRIB_FRONT_DIFFUSE           2
 495 #define MAT_ATTRIB_BACK_DIFFUSE            3
 496 #define MAT_ATTRIB_FRONT_SPECULAR          4
 497 #define MAT_ATTRIB_BACK_SPECULAR           5
 498 #define MAT_ATTRIB_FRONT_EMISSION          6
 499 #define MAT_ATTRIB_BACK_EMISSION           7
 500 #define MAT_ATTRIB_FRONT_SHININESS         8
 501 #define MAT_ATTRIB_BACK_SHININESS          9
 502 #define MAT_ATTRIB_FRONT_INDEXES           10
 503 #define MAT_ATTRIB_BACK_INDEXES            11
 504 #define MAT_ATTRIB_MAX                     12
 505
 506 #define MAT_ATTRIB_AMBIENT(f)  (MAT_ATTRIB_FRONT_AMBIENT+(f))
 507 #define MAT_ATTRIB_DIFFUSE(f)  (MAT_ATTRIB_FRONT_DIFFUSE+(f))
 508 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
 509 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
 510 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
 511 #define MAT_ATTRIB_INDEXES(f)  (MAT_ATTRIB_FRONT_INDEXES+(f))
 512
 513 #define MAT_INDEX_AMBIENT  0
 514 #define MAT_INDEX_DIFFUSE  1
 515 #define MAT_INDEX_SPECULAR 2
 516
 517 #define MAT_BIT_FRONT_AMBIENT         (1<<MAT_ATTRIB_FRONT_AMBIENT)
 518 #define MAT_BIT_BACK_AMBIENT          (1<<MAT_ATTRIB_BACK_AMBIENT)
 519 #define MAT_BIT_FRONT_DIFFUSE         (1<<MAT_ATTRIB_FRONT_DIFFUSE)
 520 #define MAT_BIT_BACK_DIFFUSE          (1<<MAT_ATTRIB_BACK_DIFFUSE)
 521 #define MAT_BIT_FRONT_SPECULAR        (1<<MAT_ATTRIB_FRONT_SPECULAR)
 522 #define MAT_BIT_BACK_SPECULAR         (1<<MAT_ATTRIB_BACK_SPECULAR)
 523 #define MAT_BIT_FRONT_EMISSION        (1<<MAT_ATTRIB_FRONT_EMISSION)
 524 #define MAT_BIT_BACK_EMISSION         (1<<MAT_ATTRIB_BACK_EMISSION)
 525 #define MAT_BIT_FRONT_SHININESS       (1<<MAT_ATTRIB_FRONT_SHININESS)
 526 #define MAT_BIT_BACK_SHININESS        (1<<MAT_ATTRIB_BACK_SHININESS)
 527 #define MAT_BIT_FRONT_INDEXES         (1<<MAT_ATTRIB_FRONT_INDEXES)
 528 #define MAT_BIT_BACK_INDEXES          (1<<MAT_ATTRIB_BACK_INDEXES)
 529
 530
 531 #define FRONT_MATERIAL_BITS     (MAT_BIT_FRONT_EMISSION |       \
 532                                  MAT_BIT_FRONT_AMBIENT |        \
 533                                  MAT_BIT_FRONT_DIFFUSE |        \
 534                                  MAT_BIT_FRONT_SPECULAR |       \
 535                                  MAT_BIT_FRONT_SHININESS |      \
 536                                  MAT_BIT_FRONT_INDEXES)
 537
 538 #define BACK_MATERIAL_BITS      (MAT_BIT_BACK_EMISSION |        \
 539                                  MAT_BIT_BACK_AMBIENT |         \
 540                                  MAT_BIT_BACK_DIFFUSE |         \
 541                                  MAT_BIT_BACK_SPECULAR |        \
 542                                  MAT_BIT_BACK_SHININESS |       \
 543                                  MAT_BIT_BACK_INDEXES)
 544
 545 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 546 /*@}*/
 547
 548
 549 #define EXP_TABLE_SIZE 512      /**< Specular exponent lookup table sizes */
 550 #define SHINE_TABLE_SIZE 256    /**< Material shininess lookup table sizes */
 551
 552 /**
 553  * Material shininess lookup table.
 554  */
 555 struct gl_shine_tab
 556 {
 557    struct gl_shine_tab *next, *prev;
 558    GLfloat tab[SHINE_TABLE_SIZE+1];
 559    GLfloat shininess;
 560    GLuint refcount;
 561 };
 562
 563
 564 /**
 565  * Light source state.
 566  */
 567 struct gl_light
 568 {
 569    struct gl_light *next;       /**< double linked list with sentinel */
 570    struct gl_light *prev;
 571
 572    GLfloat Ambient[4];          /**< ambient color */
 573    GLfloat Diffuse[4];          /**< diffuse color */
 574    GLfloat Specular[4];         /**< specular color */
 575    GLfloat EyePosition[4];      /**< position in eye coordinates */
 576    GLfloat SpotDirection[4];    /**< spotlight direction in eye coordinates */
 577    GLfloat SpotExponent;
 578    GLfloat SpotCutoff;          /**< in degrees */
 579    GLfloat _CosCutoffNeg;       /**< = cos(SpotCutoff) */
 580    GLfloat _CosCutoff;          /**< = MAX(0, cos(SpotCutoff)) */
 581    GLfloat ConstantAttenuation;
 582    GLfloat LinearAttenuation;
 583    GLfloat QuadraticAttenuation;
 584    GLboolean Enabled;           /**< On/off flag */
 585
 586    /**
 587     * \name Derived fields
 588     */
 589    /*@{*/
 590    GLbitfield _Flags;           /**< State */
 591
 592    GLfloat _Position[4];        /**< position in eye/obj coordinates */
 593    GLfloat _VP_inf_norm[3];     /**< Norm direction to infinite light */
 594    GLfloat _h_inf_norm[3];      /**< Norm( _VP_inf_norm + <0,0,1> ) */
 595    GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
 596    GLfloat _VP_inf_spot_attenuation;
 597
 598    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /**< to replace a pow() call */
 599    GLfloat _MatAmbient[2][3];   /**< material ambient * light ambient */
 600    GLfloat _MatDiffuse[2][3];   /**< material diffuse * light diffuse */
 601    GLfloat _MatSpecular[2][3];  /**< material spec * light specular */
 602    GLfloat _dli;                /**< CI diffuse light intensity */
 603    GLfloat _sli;                /**< CI specular light intensity */
 604    /*@}*/
 605 };
 606
 607
 608 /**
 609  * Light model state.
 610  */
 611 struct gl_lightmodel
 612 {
 613    GLfloat Ambient[4];          /**< ambient color */
 614    GLboolean LocalViewer;       /**< Local (or infinite) view point? */
 615    GLboolean TwoSide;           /**< Two (or one) sided lighting? */
 616    GLenum ColorControl;         /**< either GL_SINGLE_COLOR
 617                                  *    or GL_SEPARATE_SPECULAR_COLOR */
 618 };
 619
 620
 621 /**
 622  * Material state.
 623  */
 624 struct gl_material
 625 {
 626    GLfloat Attrib[MAT_ATTRIB_MAX][4];
 627 };
 628
 629
 630 /**
 631  * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
 632  */
 633 struct gl_accum_attrib
 634 {
 635    GLfloat ClearColor[4];       /**< Accumulation buffer clear color */
 636 };
 637
 638
 639 /**
 640  * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
 641  */
 642 struct gl_colorbuffer_attrib
 643 {
 644    GLuint ClearIndex;                   /**< Index to use for glClear */
 645    GLclampf ClearColor[4];              /**< Color to use for glClear */
 646
 647    GLuint IndexMask;                    /**< Color index write mask */
 648    GLubyte ColorMask[MAX_DRAW_BUFFERS][4];/**< Each flag is 0xff or 0x0 */
 649
 650    GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
 651
 652    /**
 653     * \name alpha testing
 654     */
 655    /*@{*/
 656    GLboolean AlphaEnabled;              /**< Alpha test enabled flag */
 657    GLenum AlphaFunc;                    /**< Alpha test function */
 658    GLclampf AlphaRef;                   /**< Alpha reference value */
 659    /*@}*/
 660
 661    /**
 662     * \name Blending
 663     */
 664    /*@{*/
 665    GLbitfield BlendEnabled;             /**< Per-buffer blend enable flags */
 666    GLenum BlendSrcRGB;                  /**< Blending source operator */
 667    GLenum BlendDstRGB;                  /**< Blending destination operator */
 668    GLenum BlendSrcA;                    /**< GL_INGR_blend_func_separate */
 669    GLenum BlendDstA;                    /**< GL_INGR_blend_func_separate */
 670    GLenum BlendEquationRGB;             /**< Blending equation */
 671    GLenum BlendEquationA;               /**< GL_EXT_blend_equation_separate */
 672    GLfloat BlendColor[4];               /**< Blending color */
 673    /*@}*/
 674
 675    /**
 676     * \name Logic op
 677     */
 678    /*@{*/
 679    GLenum LogicOp;                      /**< Logic operator */
 680    GLboolean IndexLogicOpEnabled;       /**< Color index logic op enabled flag */
 681    GLboolean ColorLogicOpEnabled;       /**< RGBA logic op enabled flag */
 682    GLboolean _LogicOpEnabled;           /**< RGBA logic op + EXT_blend_logic_op enabled flag */
 683    /*@}*/
 684
 685    GLboolean DitherFlag;                /**< Dither enable flag */
 686
 687    GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 688    GLenum ClampReadColor;     /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 689 };
 690
 691
 692 /**
 693  * Current attribute group (GL_CURRENT_BIT).
 694  */
 695 struct gl_current_attrib
 696 {
 697    /**
 698     * \name Current vertex attributes.
 699     * \note Values are valid only after FLUSH_VERTICES has been called.
 700     * \note Index and Edgeflag current values are stored as floats in the
 701     * SIX and SEVEN attribute slots.
 702     */
 703    GLfloat Attrib[VERT_ATTRIB_MAX][4];  /**< Position, color, texcoords, etc */
 704
 705    /**
 706     * \name Current raster position attributes (always valid).
 707     * \note This set of attributes is very similar to the SWvertex struct.
 708     */
 709    /*@{*/
 710    GLfloat RasterPos[4];
 711    GLfloat RasterDistance;
 712    GLfloat RasterColor[4];
 713    GLfloat RasterSecondaryColor[4];
 714    GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
 715    GLboolean RasterPosValid;
 716    /*@}*/
 717 };
 718
 719
 720 /**
 721  * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
 722  */
 723 struct gl_depthbuffer_attrib
 724 {
 725    GLenum Func;                 /**< Function for depth buffer compare */
 726    GLclampd Clear;              /**< Value to clear depth buffer to */
 727    GLboolean Test;              /**< Depth buffering enabled flag */
 728    GLboolean Mask;              /**< Depth buffer writable? */
 729    GLboolean BoundsTest;        /**< GL_EXT_depth_bounds_test */
 730    GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
 731 };
 732
 733
 734 /**
 735  * Evaluator attribute group (GL_EVAL_BIT).
 736  */
 737 struct gl_eval_attrib
 738 {
 739    /**
 740     * \name Enable bits
 741     */
 742    /*@{*/
 743    GLboolean Map1Color4;
 744    GLboolean Map1Index;
 745    GLboolean Map1Normal;
 746    GLboolean Map1TextureCoord1;
 747    GLboolean Map1TextureCoord2;
 748    GLboolean Map1TextureCoord3;
 749    GLboolean Map1TextureCoord4;
 750    GLboolean Map1Vertex3;
 751    GLboolean Map1Vertex4;
 752    GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
 753    GLboolean Map2Color4;
 754    GLboolean Map2Index;
 755    GLboolean Map2Normal;
 756    GLboolean Map2TextureCoord1;
 757    GLboolean Map2TextureCoord2;
 758    GLboolean Map2TextureCoord3;
 759    GLboolean Map2TextureCoord4;
 760    GLboolean Map2Vertex3;
 761    GLboolean Map2Vertex4;
 762    GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
 763    GLboolean AutoNormal;
 764    /*@}*/
 765
 766    /**
 767     * \name Map Grid endpoints and divisions and calculated du values
 768     */
 769    /*@{*/
 770    GLint MapGrid1un;
 771    GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
 772    GLint MapGrid2un, MapGrid2vn;
 773    GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
 774    GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
 775    /*@}*/
 776 };
 777
 778
 779 /**
 780  * Fog attribute group (GL_FOG_BIT).
 781  */
 782 struct gl_fog_attrib
 783 {
 784    GLboolean Enabled;           /**< Fog enabled flag */
 785    GLfloat Color[4];            /**< Fog color */
 786    GLfloat Density;             /**< Density >= 0.0 */
 787    GLfloat Start;               /**< Start distance in eye coords */
 788    GLfloat End;                 /**< End distance in eye coords */
 789    GLfloat Index;               /**< Fog index */
 790    GLenum Mode;                 /**< Fog mode */
 791    GLboolean ColorSumEnabled;
 792    GLenum FogCoordinateSource;  /**< GL_EXT_fog_coord */
 793    GLfloat _Scale;              /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
 794 };
 795
 796
 797 /**
 798  * Hint attribute group (GL_HINT_BIT).
 799  *
 800  * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
 801  */
 802 struct gl_hint_attrib
 803 {
 804    GLenum PerspectiveCorrection;
 805    GLenum PointSmooth;
 806    GLenum LineSmooth;
 807    GLenum PolygonSmooth;
 808    GLenum Fog;
 809    GLenum ClipVolumeClipping;   /**< GL_EXT_clip_volume_hint */
 810    GLenum TextureCompression;   /**< GL_ARB_texture_compression */
 811    GLenum GenerateMipmap;       /**< GL_SGIS_generate_mipmap */
 812    GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
 813 };
 814
 815
 816 /**
 817  * Histogram attributes.
 818  */
 819 struct gl_histogram_attrib
 820 {
 821    GLuint Width;                            /**< number of table entries */
 822    GLint Format;                            /**< GL_ALPHA, GL_RGB, etc */
 823    GLuint Count[HISTOGRAM_TABLE_SIZE][4];   /**< the histogram */
 824    GLboolean Sink;                          /**< terminate image transfer? */
 825    GLubyte RedSize;                         /**< Bits per counter */
 826    GLubyte GreenSize;
 827    GLubyte BlueSize;
 828    GLubyte AlphaSize;
 829    GLubyte LuminanceSize;
 830 };
 831
 832
 833 /**
 834  * Color Min/max state.
 835  */
 836 struct gl_minmax_attrib
 837 {
 838    GLenum Format;
 839    GLboolean Sink;
 840    GLfloat Min[4], Max[4];   /**< RGBA */
 841 };
 842
 843
 844 /**
 845  * Image convolution state.
 846  */
 847 struct gl_convolution_attrib
 848 {
 849    GLenum Format;
 850    GLenum InternalFormat;
 851    GLuint Width;
 852    GLuint Height;
 853    GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
 854 };
 855
 856
 857 /**
 858  * Light state flags.
 859  */
 860 /*@{*/
 861 #define LIGHT_SPOT         0x1
 862 #define LIGHT_LOCAL_VIEWER 0x2
 863 #define LIGHT_POSITIONAL   0x4
 864 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 865 /*@}*/
 866
 867
 868 /**
 869  * Lighting attribute group (GL_LIGHT_BIT).
 870  */
 871 struct gl_light_attrib
 872 {
 873    struct gl_light Light[MAX_LIGHTS];   /**< Array of light sources */
 874    struct gl_lightmodel Model;          /**< Lighting model */
 875
 876    /**
 877     * Must flush FLUSH_VERTICES before referencing:
 878     */
 879    /*@{*/
 880    struct gl_material Material;         /**< Includes front & back values */
 881    /*@}*/
 882
 883    GLboolean Enabled;                   /**< Lighting enabled flag */
 884    GLenum ShadeModel;                   /**< GL_FLAT or GL_SMOOTH */
 885    GLenum ProvokingVertex;              /**< GL_EXT_provoking_vertex */
 886    GLenum ColorMaterialFace;            /**< GL_FRONT, BACK or FRONT_AND_BACK */
 887    GLenum ColorMaterialMode;            /**< GL_AMBIENT, GL_DIFFUSE, etc */
 888    GLbitfield ColorMaterialBitmask;     /**< bitmask formed from Face and Mode */
 889    GLboolean ColorMaterialEnabled;
 890    GLenum ClampVertexColor;
 891
 892    struct gl_light EnabledList;         /**< List sentinel */
 893
 894    /**
 895     * Derived state for optimizations:
 896     */
 897    /*@{*/
 898    GLboolean _NeedEyeCoords;
 899    GLboolean _NeedVertices;             /**< Use fast shader? */
 900    GLbitfield _Flags;                   /**< LIGHT_* flags, see above */
 901    GLfloat _BaseColor[2][3];
 902    /*@}*/
 903 };
 904
 905
 906 /**
 907  * Line attribute group (GL_LINE_BIT).
 908  */
 909 struct gl_line_attrib
 910 {
 911    GLboolean SmoothFlag;        /**< GL_LINE_SMOOTH enabled? */
 912    GLboolean StippleFlag;       /**< GL_LINE_STIPPLE enabled? */
 913    GLushort StipplePattern;     /**< Stipple pattern */
 914    GLint StippleFactor;         /**< Stipple repeat factor */
 915    GLfloat Width;               /**< Line width */
 916 };
 917
 918
 919 /**
 920  * Display list attribute group (GL_LIST_BIT).
 921  */
 922 struct gl_list_attrib
 923 {
 924    GLuint ListBase;
 925 };
 926
 927
 928 /**
 929  * Multisample attribute group (GL_MULTISAMPLE_BIT).
 930  */
 931 struct gl_multisample_attrib
 932 {
 933    GLboolean Enabled;
 934    GLboolean _Enabled;   /**< true if Enabled and multisample buffer */
 935    GLboolean SampleAlphaToCoverage;
 936    GLboolean SampleAlphaToOne;
 937    GLboolean SampleCoverage;
 938    GLfloat SampleCoverageValue;
 939    GLboolean SampleCoverageInvert;
 940 };
 941
 942
 943 /**
 944  * A pixelmap (see glPixelMap)
 945  */
 946 struct gl_pixelmap
 947 {
 948    GLint Size;
 949    GLfloat Map[MAX_PIXEL_MAP_TABLE];
 950    GLubyte Map8[MAX_PIXEL_MAP_TABLE];  /**< converted to 8-bit color */
 951 };
 952
 953
 954 /**
 955  * Collection of all pixelmaps
 956  */
 957 struct gl_pixelmaps
 958 {
 959    struct gl_pixelmap RtoR;  /**< i.e. GL_PIXEL_MAP_R_TO_R */
 960    struct gl_pixelmap GtoG;
 961    struct gl_pixelmap BtoB;
 962    struct gl_pixelmap AtoA;
 963    struct gl_pixelmap ItoR;
 964    struct gl_pixelmap ItoG;
 965    struct gl_pixelmap ItoB;
 966    struct gl_pixelmap ItoA;
 967    struct gl_pixelmap ItoI;
 968    struct gl_pixelmap StoS;
 969 };
 970
 971
 972 /**
 973  * Pixel attribute group (GL_PIXEL_MODE_BIT).
 974  */
 975 struct gl_pixel_attrib
 976 {
 977    GLenum ReadBuffer;           /**< source buffer for glRead/CopyPixels() */
 978
 979    /*--- Begin Pixel Transfer State ---*/
 980    /* Fields are in the order in which they're applied... */
 981
 982    /** Scale & Bias (index shift, offset) */
 983    /*@{*/
 984    GLfloat RedBias, RedScale;
 985    GLfloat GreenBias, GreenScale;
 986    GLfloat BlueBias, BlueScale;
 987    GLfloat AlphaBias, AlphaScale;
 988    GLfloat DepthBias, DepthScale;
 989    GLint IndexShift, IndexOffset;
 990    /*@}*/
 991
 992    /* Pixel Maps */
 993    /* Note: actual pixel maps are not part of this attrib group */
 994    GLboolean MapColorFlag;
 995    GLboolean MapStencilFlag;
 996
 997    /* There are multiple color table stages: */
 998    GLboolean ColorTableEnabled[COLORTABLE_MAX];
 999    GLfloat ColorTableScale[COLORTABLE_MAX][4];  /**< RGBA */
1000    GLfloat ColorTableBias[COLORTABLE_MAX][4];   /**< RGBA */
1001
1002    /* Convolution (GL_EXT_convolution) */
1003    GLboolean Convolution1DEnabled;
1004    GLboolean Convolution2DEnabled;
1005    GLboolean Separable2DEnabled;
1006    GLfloat ConvolutionBorderColor[3][4];  /**< RGBA */
1007    GLenum ConvolutionBorderMode[3];
1008    GLfloat ConvolutionFilterScale[3][4];  /**< RGBA */
1009    GLfloat ConvolutionFilterBias[3][4];   /**< RGBA */
1010    GLfloat PostConvolutionScale[4];  /**< RGBA */
1011    GLfloat PostConvolutionBias[4];   /**< RGBA */
1012
1013    /* Color matrix (GL_SGI_color_matrix) */
1014    /* Note: the color matrix is not part of this attrib group */
1015    GLfloat PostColorMatrixScale[4];  /**< RGBA */
1016    GLfloat PostColorMatrixBias[4];   /**< RGBA */
1017
1018    /* Histogram & minmax (GL_EXT_histogram) */
1019    /* Note: histogram and minmax data are not part of this attrib group */
1020    GLboolean HistogramEnabled;
1021    GLboolean MinMaxEnabled;
1022
1023    /*--- End Pixel Transfer State ---*/
1024
1025    /** glPixelZoom */
1026    GLfloat ZoomX, ZoomY;
1027
1028    /** GL_SGI_texture_color_table */
1029    GLfloat TextureColorTableScale[4]; /**< RGBA */
1030    GLfloat TextureColorTableBias[4];  /**< RGBA */
1031 };
1032
1033
1034 /**
1035  * Point attribute group (GL_POINT_BIT).
1036  */
1037 struct gl_point_attrib
1038 {
1039    GLboolean SmoothFlag;        /**< True if GL_POINT_SMOOTH is enabled */
1040    GLfloat Size;                /**< User-specified point size */
1041    GLfloat Params[3];           /**< GL_EXT_point_parameters */
1042    GLfloat MinSize, MaxSize;    /**< GL_EXT_point_parameters */
1043    GLfloat Threshold;           /**< GL_EXT_point_parameters */
1044    GLboolean _Attenuated;       /**< True if Params != [1, 0, 0] */
1045    GLboolean PointSprite;       /**< GL_NV/ARB_point_sprite */
1046    GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
1047    GLenum SpriteRMode;          /**< GL_NV_point_sprite (only!) */
1048    GLenum SpriteOrigin;         /**< GL_ARB_point_sprite */
1049 };
1050
1051
1052 /**
1053  * Polygon attribute group (GL_POLYGON_BIT).
1054  */
1055 struct gl_polygon_attrib
1056 {
1057    GLenum FrontFace;            /**< Either GL_CW or GL_CCW */
1058    GLenum FrontMode;            /**< Either GL_POINT, GL_LINE or GL_FILL */
1059    GLenum BackMode;             /**< Either GL_POINT, GL_LINE or GL_FILL */
1060    GLboolean _FrontBit;         /**< 0=GL_CCW, 1=GL_CW */
1061    GLboolean CullFlag;          /**< Culling on/off flag */
1062    GLboolean SmoothFlag;        /**< True if GL_POLYGON_SMOOTH is enabled */
1063    GLboolean StippleFlag;       /**< True if GL_POLYGON_STIPPLE is enabled */
1064    GLenum CullFaceMode;         /**< Culling mode GL_FRONT or GL_BACK */
1065    GLfloat OffsetFactor;        /**< Polygon offset factor, from user */
1066    GLfloat OffsetUnits;         /**< Polygon offset units, from user */
1067    GLboolean OffsetPoint;       /**< Offset in GL_POINT mode */
1068    GLboolean OffsetLine;        /**< Offset in GL_LINE mode */
1069    GLboolean OffsetFill;        /**< Offset in GL_FILL mode */
1070 };
1071
1072
1073 /**
1074  * Scissor attributes (GL_SCISSOR_BIT).
1075  */
1076 struct gl_scissor_attrib
1077 {
1078    GLboolean Enabled;           /**< Scissor test enabled? */
1079    GLint X, Y;                  /**< Lower left corner of box */
1080    GLsizei Width, Height;       /**< Size of box */
1081 };
1082
1083
1084 /**
1085  * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1086  *
1087  * Three sets of stencil data are tracked so that OpenGL 2.0,
1088  * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1089  * simultaneously.  In each of the stencil state arrays, element 0 corresponds
1090  * to GL_FRONT.  Element 1 corresponds to the OpenGL 2.0 /
1091  * GL_ATI_separate_stencil GL_BACK state.  Element 2 corresponds to the
1092  * GL_EXT_stencil_two_side GL_BACK state.
1093  *
1094  * The derived value \c _BackFace is either 1 or 2 depending on whether or
1095  * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1096  *
1097  * The derived value \c _TestTwoSide is set when the front-face and back-face
1098  * stencil state are different.
1099  */
1100 struct gl_stencil_attrib
1101 {
1102    GLboolean Enabled;           /**< Enabled flag */
1103    GLboolean TestTwoSide;       /**< GL_EXT_stencil_two_side */
1104    GLubyte ActiveFace;          /**< GL_EXT_stencil_two_side (0 or 2) */
1105    GLboolean _Enabled;          /**< Enabled and stencil buffer present */
1106    GLboolean _TestTwoSide;
1107    GLubyte _BackFace;           /**< Current back stencil state (1 or 2) */
1108    GLenum Function[3];          /**< Stencil function */
1109    GLenum FailFunc[3];          /**< Fail function */
1110    GLenum ZPassFunc[3];         /**< Depth buffer pass function */
1111    GLenum ZFailFunc[3];         /**< Depth buffer fail function */
1112    GLint Ref[3];                /**< Reference value */
1113    GLuint ValueMask[3];         /**< Value mask */
1114    GLuint WriteMask[3];         /**< Write mask */
1115    GLuint Clear;                /**< Clear value */
1116 };
1117
1118
1119 /**
1120  * An index for each type of texture object.  These correspond to the GL
1121  * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1122  * Note: the order is from highest priority to lowest priority.
1123  */
1124 typedef enum
1125 {
1126    TEXTURE_2D_ARRAY_INDEX,
1127    TEXTURE_1D_ARRAY_INDEX,
1128    TEXTURE_CUBE_INDEX,
1129    TEXTURE_3D_INDEX,
1130    TEXTURE_RECT_INDEX,
1131    TEXTURE_2D_INDEX,
1132    TEXTURE_1D_INDEX,
1133    NUM_TEXTURE_TARGETS
1134 } gl_texture_index;
1135
1136
1137 /**
1138  * Bit flags for each type of texture object
1139  * Used for Texture.Unit[]._ReallyEnabled flags.
1140  */
1141 /*@{*/
1142 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1143 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1144 #define TEXTURE_CUBE_BIT     (1 << TEXTURE_CUBE_INDEX)
1145 #define TEXTURE_3D_BIT       (1 << TEXTURE_3D_INDEX)
1146 #define TEXTURE_RECT_BIT     (1 << TEXTURE_RECT_INDEX)
1147 #define TEXTURE_2D_BIT       (1 << TEXTURE_2D_INDEX)
1148 #define TEXTURE_1D_BIT       (1 << TEXTURE_1D_INDEX)
1149 /*@}*/
1150
1151
1152 /**
1153  * TexGenEnabled flags.
1154  */
1155 /*@{*/
1156 #define S_BIT 1
1157 #define T_BIT 2
1158 #define R_BIT 4
1159 #define Q_BIT 8
1160 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1161 /*@}*/
1162
1163
1164 /**
1165  * Bit flag versions of the corresponding GL_ constants.
1166  */
1167 /*@{*/
1168 #define TEXGEN_SPHERE_MAP        0x1
1169 #define TEXGEN_OBJ_LINEAR        0x2
1170 #define TEXGEN_EYE_LINEAR        0x4
1171 #define TEXGEN_REFLECTION_MAP_NV 0x8
1172 #define TEXGEN_NORMAL_MAP_NV     0x10
1173
1174 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
1175                                   TEXGEN_REFLECTION_MAP_NV | \
1176                                   TEXGEN_NORMAL_MAP_NV)
1177 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
1178                                   TEXGEN_REFLECTION_MAP_NV | \
1179                                   TEXGEN_NORMAL_MAP_NV     | \
1180                                   TEXGEN_EYE_LINEAR)
1181 /*@}*/
1182
1183
1184
1185 /** Tex-gen enabled for texture unit? */
1186 #define ENABLE_TEXGEN(unit) (1 << (unit))
1187
1188 /** Non-identity texture matrix for texture unit? */
1189 #define ENABLE_TEXMAT(unit) (1 << (unit))
1190
1191
1192 /**
1193  * Texel fetch function prototype.  We use texel fetch functions to
1194  * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1195  * texture images.  These functions help to isolate us from the gritty
1196  * details of all the various texture image encodings.
1197  *
1198  * \param texImage texture image.
1199  * \param col texel column.
1200  * \param row texel row.
1201  * \param img texel image level/layer.
1202  * \param texelOut output texel (up to 4 GLchans)
1203  */
1204 typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
1205                                  GLint col, GLint row, GLint img,
1206                                  GLchan *texelOut );
1207
1208 /**
1209  * As above, but returns floats.
1210  * Used for depth component images and for upcoming signed/float
1211  * texture images.
1212  */
1213 typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
1214                                  GLint col, GLint row, GLint img,
1215                                  GLfloat *texelOut );
1216
1217
1218 typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,
1219                                GLint col, GLint row, GLint img,
1220                                const void *texel);
1221
1222
1223 /**
1224  * Texture image state.  Describes the dimensions of a texture image,
1225  * the texel format and pointers to Texel Fetch functions.
1226  */
1227 struct gl_texture_image
1228 {
1229    GLint InternalFormat;        /**< Internal format as given by the user */
1230    GLenum _BaseFormat;          /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1231                                  *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1232                                  *   GL_INTENSITY, GL_COLOR_INDEX,
1233                                  *   GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1234                                  *   only. Used for choosing TexEnv arithmetic.
1235                                  */
1236    GLuint TexFormat;            /**< The actual format: MESA_FORMAT_x */
1237
1238    GLuint Border;               /**< 0 or 1 */
1239    GLuint Width;                /**< = 2^WidthLog2 + 2*Border */
1240    GLuint Height;               /**< = 2^HeightLog2 + 2*Border */
1241    GLuint Depth;                /**< = 2^DepthLog2 + 2*Border */
1242    GLuint Width2;               /**< = Width - 2*Border */
1243    GLuint Height2;              /**< = Height - 2*Border */
1244    GLuint Depth2;               /**< = Depth - 2*Border */
1245    GLuint WidthLog2;            /**< = log2(Width2) */
1246    GLuint HeightLog2;           /**< = log2(Height2) */
1247    GLuint DepthLog2;            /**< = log2(Depth2) */
1248    GLuint MaxLog2;              /**< = MAX(WidthLog2, HeightLog2) */
1249    GLfloat WidthScale;          /**< used for mipmap LOD computation */
1250    GLfloat HeightScale;         /**< used for mipmap LOD computation */
1251    GLfloat DepthScale;          /**< used for mipmap LOD computation */
1252    GLboolean IsClientData;      /**< Data owned by client? */
1253    GLboolean _IsPowerOfTwo;     /**< Are all dimensions powers of two? */
1254
1255    struct gl_texture_object *TexObject;  /**< Pointer back to parent object */
1256
1257    FetchTexelFuncC FetchTexelc; /**< GLchan texel fetch function pointer */
1258    FetchTexelFuncF FetchTexelf; /**< Float texel fetch function pointer */
1259
1260    GLuint RowStride;            /**< Padded width in units of texels */
1261    GLuint *ImageOffsets;        /**< if 3D texture: array [Depth] of offsets to
1262                                      each 2D slice in 'Data', in texels */
1263    GLvoid *Data;                /**< Image data, accessed via FetchTexel() */
1264
1265    /**
1266     * \name For device driver:
1267     */
1268    /*@{*/
1269    void *DriverData;            /**< Arbitrary device driver data */
1270    /*@}*/
1271 };
1272
1273
1274 /**
1275  * Indexes for cube map faces.
1276  */
1277 typedef enum
1278 {
1279    FACE_POS_X = 0,
1280    FACE_NEG_X = 1,
1281    FACE_POS_Y = 2,
1282    FACE_NEG_Y = 3,
1283    FACE_POS_Z = 4,
1284    FACE_NEG_Z = 5,
1285    MAX_FACES = 6
1286 } gl_face_index;
1287
1288
1289 /**
1290  * Texture object state.  Contains the array of mipmap images, border color,
1291  * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1292  * color palette.
1293  */
1294 struct gl_texture_object
1295 {
1296    _glthread_Mutex Mutex;       /**< for thread safety */
1297    GLint RefCount;              /**< reference count */
1298    GLuint Name;                 /**< the user-visible texture object ID */
1299    GLenum Target;               /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1300    GLfloat Priority;            /**< in [0,1] */
1301    union {
1302       GLfloat f[4];
1303       GLuint ui[4];
1304       GLint i[4];
1305    } BorderColor;               /**< Interpreted according to texture format */
1306    GLenum WrapS;                /**< S-axis texture image wrap mode */
1307    GLenum WrapT;                /**< T-axis texture image wrap mode */
1308    GLenum WrapR;                /**< R-axis texture image wrap mode */
1309    GLenum MinFilter;            /**< minification filter */
1310    GLenum MagFilter;            /**< magnification filter */
1311    GLfloat MinLod;              /**< min lambda, OpenGL 1.2 */
1312    GLfloat MaxLod;              /**< max lambda, OpenGL 1.2 */
1313    GLfloat LodBias;             /**< OpenGL 1.4 */
1314    GLint BaseLevel;             /**< min mipmap level, OpenGL 1.2 */
1315    GLint MaxLevel;              /**< max mipmap level, OpenGL 1.2 */
1316    GLfloat MaxAnisotropy;       /**< GL_EXT_texture_filter_anisotropic */
1317    GLenum CompareMode;          /**< GL_ARB_shadow */
1318    GLenum CompareFunc;          /**< GL_ARB_shadow */
1319    GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */
1320    GLenum DepthMode;            /**< GL_ARB_depth_texture */
1321    GLint _MaxLevel;             /**< actual max mipmap level (q in the spec) */
1322    GLfloat _MaxLambda;          /**< = _MaxLevel - BaseLevel (q - b in spec) */
1323    GLint CropRect[4];           /**< GL_OES_draw_texture */
1324    GLenum Swizzle[4];           /**< GL_EXT_texture_swizzle */
1325    GLuint _Swizzle;             /**< same as Swizzle, but SWIZZLE_* format */
1326    GLboolean GenerateMipmap;    /**< GL_SGIS_generate_mipmap */
1327    GLboolean _Complete;         /**< Is texture object complete? */
1328    GLboolean _RenderToTexture;  /**< Any rendering to this texture? */
1329    GLboolean Purgeable;         /**< Is the buffer purgeable under memory pressure? */
1330
1331    /** Actual texture images, indexed by [cube face] and [mipmap level] */
1332    struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1333
1334    /** GL_EXT_paletted_texture */
1335    struct gl_color_table Palette;
1336
1337    /**
1338     * \name For device driver.
1339     * Note: instead of attaching driver data to this pointer, it's preferable
1340     * to instead use this struct as a base class for your own texture object
1341     * class.  Driver->NewTextureObject() can be used to implement the
1342     * allocation.
1343     */
1344    void *DriverData;    /**< Arbitrary device driver data */
1345 };
1346
1347
1348 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1349 #define MAX_COMBINER_TERMS 4
1350
1351
1352 /**
1353  * Texture combine environment state.
1354  */
1355 struct gl_tex_env_combine_state
1356 {
1357    GLenum ModeRGB;       /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1358    GLenum ModeA;         /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1359    /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1360    GLenum SourceRGB[MAX_COMBINER_TERMS];
1361    GLenum SourceA[MAX_COMBINER_TERMS];
1362    /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1363    GLenum OperandRGB[MAX_COMBINER_TERMS];
1364    GLenum OperandA[MAX_COMBINER_TERMS];
1365    GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1366    GLuint ScaleShiftA;   /**< 0, 1 or 2 */
1367    GLuint _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */
1368    GLuint _NumArgsA;     /**< Number of inputs used for the A combiner */
1369 };
1370
1371
1372 /**
1373  * Texture coord generation state.
1374  */
1375 struct gl_texgen
1376 {
1377    GLenum Mode;         /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1378    GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
1379    GLfloat ObjectPlane[4];
1380    GLfloat EyePlane[4];
1381 };
1382
1383
1384 /**
1385  * Texture unit state.  Contains enable flags, texture environment/function/
1386  * combiners, texgen state, pointers to current texture objects and
1387  * post-filter color tables.
1388  */
1389 struct gl_texture_unit
1390 {
1391    GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
1392    GLbitfield _ReallyEnabled;   /**< 0 or exactly one of TEXTURE_*_BIT flags */
1393
1394    GLenum EnvMode;              /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1395    GLfloat EnvColor[4];
1396
1397    struct gl_texgen GenS;
1398    struct gl_texgen GenT;
1399    struct gl_texgen GenR;
1400    struct gl_texgen GenQ;
1401    GLbitfield TexGenEnabled;    /**< Bitwise-OR of [STRQ]_BIT values */
1402    GLbitfield _GenFlags;        /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1403
1404    GLfloat LodBias;             /**< for biasing mipmap levels */
1405    GLenum BumpTarget;
1406    GLfloat RotMatrix[4]; /* 2x2 matrix */
1407
1408    /**
1409     * \name GL_EXT_texture_env_combine
1410     */
1411    struct gl_tex_env_combine_state Combine;
1412
1413    /**
1414     * Derived state based on \c EnvMode and the \c BaseFormat of the
1415     * currently enabled texture.
1416     */
1417    struct gl_tex_env_combine_state _EnvMode;
1418
1419    /**
1420     * Currently enabled combiner state.  This will point to either
1421     * \c Combine or \c _EnvMode.
1422     */
1423    struct gl_tex_env_combine_state *_CurrentCombine;
1424
1425    /** Current texture object pointers */
1426    struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
1427
1428    /** Points to highest priority, complete and enabled texture object */
1429    struct gl_texture_object *_Current;
1430
1431    /** GL_SGI_texture_color_table */
1432    /*@{*/
1433    struct gl_color_table ColorTable;
1434    struct gl_color_table ProxyColorTable;
1435    GLboolean ColorTableEnabled;
1436    /*@}*/
1437 };
1438
1439
1440 /**
1441  * Texture attribute group (GL_TEXTURE_BIT).
1442  */
1443 struct gl_texture_attrib
1444 {
1445    GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */
1446    struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
1447
1448    struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1449
1450    /** GL_ARB_seamless_cubemap */
1451    GLboolean CubeMapSeamless;
1452
1453    /** GL_EXT_shared_texture_palette */
1454    GLboolean SharedPalette;
1455    struct gl_color_table Palette;
1456
1457    /** Texture units/samplers used by vertex or fragment texturing */
1458    GLbitfield _EnabledUnits;
1459
1460    /** Texture coord units/sets used for fragment texturing */
1461    GLbitfield _EnabledCoordUnits;
1462
1463    /** Texture coord units that have texgen enabled */
1464    GLbitfield _TexGenEnabled;
1465
1466    /** Texture coord units that have non-identity matrices */
1467    GLbitfield _TexMatEnabled;
1468
1469    /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1470    GLbitfield _GenFlags;
1471 };
1472
1473
1474 /**
1475  * Transformation attribute group (GL_TRANSFORM_BIT).
1476  */
1477 struct gl_transform_attrib
1478 {
1479    GLenum MatrixMode;                           /**< Matrix mode */
1480    GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];    /**< User clip planes */
1481    GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];  /**< derived */
1482    GLbitfield ClipPlanesEnabled;                /**< on/off bitmask */
1483    GLboolean Normalize;                         /**< Normalize all normals? */
1484    GLboolean RescaleNormals;                    /**< GL_EXT_rescale_normal */
1485    GLboolean RasterPositionUnclipped;           /**< GL_IBM_rasterpos_clip */
1486    GLboolean DepthClamp;                        /**< GL_ARB_depth_clamp */
1487
1488    GLboolean CullVertexFlag;    /**< True if GL_CULL_VERTEX_EXT is enabled */
1489    GLfloat CullEyePos[4];
1490    GLfloat CullObjPos[4];
1491 };
1492
1493
1494 /**
1495  * Viewport attribute group (GL_VIEWPORT_BIT).
1496  */
1497 struct gl_viewport_attrib
1498 {
1499    GLint X, Y;                  /**< position */
1500    GLsizei Width, Height;       /**< size */
1501    GLfloat Near, Far;           /**< Depth buffer range */
1502    GLmatrix _WindowMap;         /**< Mapping transformation as a matrix. */
1503 };
1504
1505
1506 /**
1507  * GL_ARB_vertex/pixel_buffer_object buffer object
1508  */
1509 struct gl_buffer_object
1510 {
1511    _glthread_Mutex Mutex;
1512    GLint RefCount;
1513    GLuint Name;
1514    GLenum Usage;        /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1515    GLsizeiptrARB Size;  /**< Size of buffer storage in bytes */
1516    GLubyte *Data;       /**< Location of storage either in RAM or VRAM. */
1517    /** Fields describing a mapped buffer */
1518    /*@{*/
1519    GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
1520    GLvoid *Pointer;     /**< User-space address of mapping */
1521    GLintptr Offset;     /**< Mapped offset */
1522    GLsizeiptr Length;   /**< Mapped length */
1523    /*@}*/
1524    GLboolean Written;   /**< Ever written to? (for debugging) */
1525    GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1526 };
1527
1528
1529 /**
1530  * Client pixel packing/unpacking attributes
1531  */
1532 struct gl_pixelstore_attrib
1533 {
1534    GLint Alignment;
1535    GLint RowLength;
1536    GLint SkipPixels;
1537    GLint SkipRows;
1538    GLint ImageHeight;
1539    GLint SkipImages;
1540    GLboolean SwapBytes;
1541    GLboolean LsbFirst;
1542    GLboolean ClientStorage; /**< GL_APPLE_client_storage */
1543    GLboolean Invert;        /**< GL_MESA_pack_invert */
1544    struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1545 };
1546
1547
1548 /**
1549  * Client vertex array attributes
1550  */
1551 struct gl_client_array
1552 {
1553    GLint Size;                  /**< components per element (1,2,3,4) */
1554    GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */
1555    GLenum Format;               /**< default: GL_RGBA, but may be GL_BGRA */
1556    GLsizei Stride;              /**< user-specified stride */
1557    GLsizei StrideB;             /**< actual stride in bytes */
1558    const GLubyte *Ptr;          /**< Points to array data */
1559    GLboolean Enabled;           /**< Enabled flag is a boolean */
1560    GLboolean Normalized;        /**< GL_ARB_vertex_program */
1561    GLuint _ElementSize;         /**< size of each element in bytes */
1562
1563    struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
1564    GLuint _MaxElement;          /**< max element index into array buffer + 1 */
1565 };
1566
1567
1568 /**
1569  * Collection of vertex arrays.  Defined by the GL_APPLE_vertex_array_object
1570  * extension, but a nice encapsulation in any case.
1571  */
1572 struct gl_array_object
1573 {
1574    /** Name of the array object as received from glGenVertexArrayAPPLE. */
1575    GLuint Name;
1576
1577    GLint RefCount;
1578    _glthread_Mutex Mutex;
1579    GLboolean VBOonly;  /**< require all arrays to live in VBOs? */
1580
1581    /** Conventional vertex arrays */
1582    /*@{*/
1583    struct gl_client_array Vertex;
1584    struct gl_client_array Weight;
1585    struct gl_client_array Normal;
1586    struct gl_client_array Color;
1587    struct gl_client_array SecondaryColor;
1588    struct gl_client_array FogCoord;
1589    struct gl_client_array Index;
1590    struct gl_client_array EdgeFlag;
1591    struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
1592    struct gl_client_array PointSize;
1593    /*@}*/
1594
1595    /**
1596     * Generic arrays for vertex programs/shaders.
1597     * For NV vertex programs, these attributes alias and take priority
1598     * over the conventional attribs above.  For ARB vertex programs and
1599     * GLSL vertex shaders, these attributes are separate.
1600     */
1601    struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS];
1602
1603    /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1604    GLbitfield _Enabled;
1605
1606    /**
1607     * Min of all enabled arrays' _MaxElement.  When arrays reside inside VBOs
1608     * we can determine the max legal (in bounds) glDrawElements array index.
1609     */
1610    GLuint _MaxElement;
1611 };
1612
1613
1614 /**
1615  * Vertex array state
1616  */
1617 struct gl_array_attrib
1618 {
1619    /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1620    struct gl_array_object *ArrayObj;
1621
1622    /** The default vertex array object */
1623    struct gl_array_object *DefaultArrayObj;
1624
1625    /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1626    struct _mesa_HashTable *Objects;
1627
1628    GLint ActiveTexture;         /**< Client Active Texture */
1629    GLuint LockFirst;            /**< GL_EXT_compiled_vertex_array */
1630    GLuint LockCount;            /**< GL_EXT_compiled_vertex_array */
1631
1632    /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1633    GLboolean PrimitiveRestart;
1634    GLuint RestartIndex;
1635
1636    GLbitfield NewState;         /**< mask of _NEW_ARRAY_* values */
1637
1638 #if FEATURE_ARB_vertex_buffer_object
1639    struct gl_buffer_object *ArrayBufferObj;
1640    struct gl_buffer_object *ElementArrayBufferObj;
1641 #endif
1642 };
1643
1644
1645 /**
1646  * Feedback buffer state
1647  */
1648 struct gl_feedback
1649 {
1650    GLenum Type;
1651    GLbitfield _Mask;    /**< FB_* bits */
1652    GLfloat *Buffer;
1653    GLuint BufferSize;
1654    GLuint Count;
1655 };
1656
1657
1658 /**
1659  * Selection buffer state
1660  */
1661 struct gl_selection
1662 {
1663    GLuint *Buffer;      /**< selection buffer */
1664    GLuint BufferSize;   /**< size of the selection buffer */
1665    GLuint BufferCount;  /**< number of values in the selection buffer */
1666    GLuint Hits;         /**< number of records in the selection buffer */
1667    GLuint NameStackDepth; /**< name stack depth */
1668    GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1669    GLboolean HitFlag;   /**< hit flag */
1670    GLfloat HitMinZ;     /**< minimum hit depth */
1671    GLfloat HitMaxZ;     /**< maximum hit depth */
1672 };
1673
1674
1675 /**
1676  * 1-D Evaluator control points
1677  */
1678 struct gl_1d_map
1679 {
1680    GLuint Order;        /**< Number of control points */
1681    GLfloat u1, u2, du;  /**< u1, u2, 1.0/(u2-u1) */
1682    GLfloat *Points;     /**< Points to contiguous control points */
1683 };
1684
1685
1686 /**
1687  * 2-D Evaluator control points
1688  */
1689 struct gl_2d_map
1690 {
1691    GLuint Uorder;               /**< Number of control points in U dimension */
1692    GLuint Vorder;               /**< Number of control points in V dimension */
1693    GLfloat u1, u2, du;
1694    GLfloat v1, v2, dv;
1695    GLfloat *Points;             /**< Points to contiguous control points */
1696 };
1697
1698
1699 /**
1700  * All evaluator control point state
1701  */
1702 struct gl_evaluators
1703 {
1704    /**
1705     * \name 1-D maps
1706     */
1707    /*@{*/
1708    struct gl_1d_map Map1Vertex3;
1709    struct gl_1d_map Map1Vertex4;
1710    struct gl_1d_map Map1Index;
1711    struct gl_1d_map Map1Color4;
1712    struct gl_1d_map Map1Normal;
1713    struct gl_1d_map Map1Texture1;
1714    struct gl_1d_map Map1Texture2;
1715    struct gl_1d_map Map1Texture3;
1716    struct gl_1d_map Map1Texture4;
1717    struct gl_1d_map Map1Attrib[16];  /**< GL_NV_vertex_program */
1718    /*@}*/
1719
1720    /**
1721     * \name 2-D maps
1722     */
1723    /*@{*/
1724    struct gl_2d_map Map2Vertex3;
1725    struct gl_2d_map Map2Vertex4;
1726    struct gl_2d_map Map2Index;
1727    struct gl_2d_map Map2Color4;
1728    struct gl_2d_map Map2Normal;
1729    struct gl_2d_map Map2Texture1;
1730    struct gl_2d_map Map2Texture2;
1731    struct gl_2d_map Map2Texture3;
1732    struct gl_2d_map Map2Texture4;
1733    struct gl_2d_map Map2Attrib[16];  /**< GL_NV_vertex_program */
1734    /*@}*/
1735 };
1736
1737
1738 /**
1739  * Names of the various vertex/fragment program register files, etc.
1740  *
1741  * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1742  * All values should fit in a 4-bit field.
1743  *
1744  * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1745  * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1746  * be "uniform" variables since they can only be set outside glBegin/End.
1747  * They're also all stored in the same Parameters array.
1748  */
1749 typedef enum
1750 {
1751    PROGRAM_TEMPORARY,   /**< machine->Temporary[] */
1752    PROGRAM_INPUT,       /**< machine->Inputs[] */
1753    PROGRAM_OUTPUT,      /**< machine->Outputs[] */
1754    PROGRAM_VARYING,     /**< machine->Inputs[]/Outputs[] */
1755    PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */
1756    PROGRAM_ENV_PARAM,   /**< gl_program->Parameters[] */
1757    PROGRAM_STATE_VAR,   /**< gl_program->Parameters[] */
1758    PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */
1759    PROGRAM_CONSTANT,    /**< gl_program->Parameters[] */
1760    PROGRAM_UNIFORM,     /**< gl_program->Parameters[] */
1761    PROGRAM_WRITE_ONLY,  /**< A dummy, write-only register */
1762    PROGRAM_ADDRESS,     /**< machine->AddressReg */
1763    PROGRAM_SAMPLER,     /**< for shader samplers, compile-time only */
1764    PROGRAM_UNDEFINED,   /**< Invalid/TBD value */
1765    PROGRAM_FILE_MAX
1766 } gl_register_file;
1767
1768
1769 /** Vertex and fragment instructions */
1770 struct prog_instruction;
1771 struct gl_program_parameter_list;
1772 struct gl_uniform_list;
1773
1774
1775 /**
1776  * Base class for any kind of program object
1777  */
1778 struct gl_program
1779 {
1780    GLuint Id;
1781    GLubyte *String;  /**< Null-terminated program text */
1782    GLint RefCount;
1783    GLenum Target;    /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1784    GLenum Format;    /**< String encoding format */
1785    GLboolean Resident;
1786
1787    struct prog_instruction *Instructions;
1788
1789    GLbitfield InputsRead;     /**< Bitmask of which input regs are read */
1790    GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
1791    GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */
1792    GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
1793    GLbitfield TexturesUsed[MAX_TEXTURE_UNITS];  /**< TEXTURE_x_BIT bitmask */
1794    GLbitfield SamplersUsed;   /**< Bitfield of which samplers are used */
1795    GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
1796
1797
1798    /** Named parameters, constants, etc. from program text */
1799    struct gl_program_parameter_list *Parameters;
1800    /** Numbered local parameters */
1801    GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
1802
1803    /** Vertex/fragment shader varying vars */
1804    struct gl_program_parameter_list *Varying;
1805    /** Vertex program user-defined attributes */
1806    struct gl_program_parameter_list *Attributes;
1807
1808    /** Map from sampler unit to texture unit (set by glUniform1i()) */
1809    GLubyte SamplerUnits[MAX_SAMPLERS];
1810    /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1811    gl_texture_index SamplerTargets[MAX_SAMPLERS];
1812
1813    /** Logical counts */
1814    /*@{*/
1815    GLuint NumInstructions;
1816    GLuint NumTemporaries;
1817    GLuint NumParameters;
1818    GLuint NumAttributes;
1819    GLuint NumAddressRegs;
1820    GLuint NumAluInstructions;
1821    GLuint NumTexInstructions;
1822    GLuint NumTexIndirections;
1823    /*@}*/
1824    /** Native, actual h/w counts */
1825    /*@{*/
1826    GLuint NumNativeInstructions;
1827    GLuint NumNativeTemporaries;
1828    GLuint NumNativeParameters;
1829    GLuint NumNativeAttributes;
1830    GLuint NumNativeAddressRegs;
1831    GLuint NumNativeAluInstructions;
1832    GLuint NumNativeTexInstructions;
1833    GLuint NumNativeTexIndirections;
1834    /*@}*/
1835 };
1836
1837
1838 /** Vertex program object */
1839 struct gl_vertex_program
1840 {
1841    struct gl_program Base;   /**< base class */
1842    GLboolean IsNVProgram;    /**< is this a GL_NV_vertex_program program? */
1843    GLboolean IsPositionInvariant;
1844 };
1845
1846
1847 /** Geometry program object */
1848 struct gl_geometry_program
1849 {
1850    struct gl_program Base;   /**< base class */
1851
1852    GLint VerticesOut;
1853    GLint InputType;
1854    GLint OutputType;
1855 };
1856
1857
1858 /** Fragment program object */
1859 struct gl_fragment_program
1860 {
1861    struct gl_program Base;   /**< base class */
1862    GLenum FogOption;
1863    GLboolean UsesKill;          /**< shader uses KIL instruction */
1864    GLboolean OriginUpperLeft;
1865    GLboolean PixelCenterInteger;
1866 };
1867
1868
1869 /**
1870  * State common to vertex and fragment programs.
1871  */
1872 struct gl_program_state
1873 {
1874    GLint ErrorPos;                       /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1875    const char *ErrorString;              /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1876 };
1877
1878
1879 /**
1880  * Context state for vertex programs.
1881  */
1882 struct gl_vertex_program_state
1883 {
1884    GLboolean Enabled;            /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1885    GLboolean _Enabled;           /**< Enabled and _valid_ user program? */
1886    GLboolean PointSizeEnabled;   /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1887    GLboolean TwoSideEnabled;     /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1888    struct gl_vertex_program *Current;  /**< User-bound vertex program */
1889
1890    /** Currently enabled and valid vertex program (including internal
1891     * programs, user-defined vertex programs and GLSL vertex shaders).
1892     * This is the program we must use when rendering.
1893     */
1894    struct gl_vertex_program *_Current;
1895
1896    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1897
1898    /* For GL_NV_vertex_program only: */
1899    GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
1900    GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
1901
1902    /** Should fixed-function T&L be implemented with a vertex prog? */
1903    GLboolean _MaintainTnlProgram;
1904
1905    /** Program to emulate fixed-function T&L (see above) */
1906    struct gl_vertex_program *_TnlProgram;
1907
1908    /** Cache of fixed-function programs */
1909    struct gl_program_cache *Cache;
1910
1911    GLboolean _Overriden;
1912 };
1913
1914
1915 /**
1916  * Context state for geometry programs.
1917  */
1918 struct gl_geometry_program_state
1919 {
1920    GLboolean Enabled;               /**< GL_ARB_GEOMETRY_SHADER4 */
1921    GLboolean _Enabled;              /**< Enabled and valid program? */
1922    struct gl_geometry_program *Current;  /**< user-bound geometry program */
1923
1924    /** Currently enabled and valid program (including internal programs
1925     * and compiled shader programs).
1926     */
1927    struct gl_geometry_program *_Current;
1928
1929    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1930
1931    /** Cache of fixed-function programs */
1932    struct gl_program_cache *Cache;
1933 };
1934
1935 /**
1936  * Context state for fragment programs.
1937  */
1938 struct gl_fragment_program_state
1939 {
1940    GLboolean Enabled;     /**< User-set fragment program enable flag */
1941    GLboolean _Enabled;    /**< Enabled and _valid_ user program? */
1942    struct gl_fragment_program *Current;  /**< User-bound fragment program */
1943
1944    /** Currently enabled and valid fragment program (including internal
1945     * programs, user-defined fragment programs and GLSL fragment shaders).
1946     * This is the program we must use when rendering.
1947     */
1948    struct gl_fragment_program *_Current;
1949
1950    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1951
1952    /** Should fixed-function texturing be implemented with a fragment prog? */
1953    GLboolean _MaintainTexEnvProgram;
1954
1955    /** Program to emulate fixed-function texture env/combine (see above) */
1956    struct gl_fragment_program *_TexEnvProgram;
1957
1958    /** Cache of fixed-function programs */
1959    struct gl_program_cache *Cache;
1960 };
1961
1962
1963 /**
1964  * ATI_fragment_shader runtime state
1965  */
1966 #define ATI_FS_INPUT_PRIMARY 0
1967 #define ATI_FS_INPUT_SECONDARY 1
1968
1969 struct atifs_instruction;
1970 struct atifs_setupinst;
1971
1972 /**
1973  * ATI fragment shader
1974  */
1975 struct ati_fragment_shader
1976 {
1977    GLuint Id;
1978    GLint RefCount;
1979    struct atifs_instruction *Instructions[2];
1980    struct atifs_setupinst *SetupInst[2];
1981    GLfloat Constants[8][4];
1982    GLbitfield LocalConstDef;  /**< Indicates which constants have been set */
1983    GLubyte numArithInstr[2];
1984    GLubyte regsAssigned[2];
1985    GLubyte NumPasses;         /**< 1 or 2 */
1986    GLubyte cur_pass;
1987    GLubyte last_optype;
1988    GLboolean interpinp1;
1989    GLboolean isValid;
1990    GLuint swizzlerq;
1991 };
1992
1993 /**
1994  * Context state for GL_ATI_fragment_shader
1995  */
1996 struct gl_ati_fragment_shader_state
1997 {
1998    GLboolean Enabled;
1999    GLboolean _Enabled;                  /**< enabled and valid shader? */
2000    GLboolean Compiling;
2001    GLfloat GlobalConstants[8][4];
2002    struct ati_fragment_shader *Current;
2003 };
2004
2005
2006 /**
2007  * Occlusion/timer query object.
2008  */
2009 struct gl_query_object
2010 {
2011    GLenum Target;      /**< The query target, when active */
2012    GLuint Id;          /**< hash table ID/name */
2013    GLuint64EXT Result; /**< the counter */
2014    GLboolean Active;   /**< inside Begin/EndQuery */
2015    GLboolean Ready;    /**< result is ready? */
2016 };
2017
2018
2019 /**
2020  * Context state for query objects.
2021  */
2022 struct gl_query_state
2023 {
2024    struct _mesa_HashTable *QueryObjects;
2025    struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
2026    struct gl_query_object *CurrentTimerObject;     /* GL_EXT_timer_query */
2027
2028    /** GL_NV_conditional_render */
2029    struct gl_query_object *CondRenderQuery;
2030
2031    /** GL_EXT_transform_feedback */
2032    struct gl_query_object *PrimitivesGenerated;
2033    struct gl_query_object *PrimitivesWritten;
2034
2035    /** GL_ARB_timer_query */
2036    struct gl_query_object *TimeElapsed;
2037
2038    GLenum CondRenderMode;
2039 };
2040
2041
2042 /** Sync object state */
2043 struct gl_sync_object {
2044    struct simple_node link;
2045    GLenum Type;               /**< GL_SYNC_FENCE */
2046    GLuint Name;               /**< Fence name */
2047    GLint RefCount;            /**< Reference count */
2048    GLboolean DeletePending;   /**< Object was deleted while there were still
2049                                * live references (e.g., sync not yet finished)
2050                                */
2051    GLenum SyncCondition;
2052    GLbitfield Flags;          /**< Flags passed to glFenceSync */
2053    GLuint StatusFlag:1;       /**< Has the sync object been signaled? */
2054 };
2055
2056
2057 /** Set by #pragma directives */
2058 struct gl_sl_pragmas
2059 {
2060    GLboolean IgnoreOptimize;  /**< ignore #pragma optimize(on/off) ? */
2061    GLboolean IgnoreDebug;     /**< ignore #pragma debug(on/off) ? */
2062    GLboolean Optimize;  /**< defaults on */
2063    GLboolean Debug;     /**< defaults off */
2064 };
2065
2066
2067 /**
2068  * A GLSL vertex or fragment shader object.
2069  */
2070 struct gl_shader
2071 {
2072    GLenum Type;  /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2073    GLuint Name;  /**< AKA the handle */
2074    GLint RefCount;  /**< Reference count */
2075    GLboolean DeletePending;
2076    GLboolean CompileStatus;
2077    GLboolean Main;  /**< shader defines main() */
2078    GLboolean UnresolvedRefs;
2079    const GLchar *Source;  /**< Source code string */
2080    GLuint SourceChecksum;       /**< for debug/logging purposes */
2081    struct gl_program *Program;  /**< Post-compile assembly code */
2082    GLchar *InfoLog;
2083    struct gl_sl_pragmas Pragmas;
2084 };
2085
2086
2087 /**
2088  * A GLSL program object.
2089  * Basically a linked collection of vertex and fragment shaders.
2090  */
2091 struct gl_shader_program
2092 {
2093    GLenum Type;  /**< Always GL_SHADER_PROGRAM (internal token) */
2094    GLuint Name;  /**< aka handle or ID */
2095    GLint RefCount;  /**< Reference count */
2096    GLboolean DeletePending;
2097
2098    GLuint NumShaders;          /**< number of attached shaders */
2099    struct gl_shader **Shaders; /**< List of attached the shaders */
2100
2101    /** User-defined attribute bindings (glBindAttribLocation) */
2102    struct gl_program_parameter_list *Attributes;
2103
2104    /** Transform feedback varyings */
2105    struct {
2106       GLenum BufferMode;
2107       GLuint NumVarying;
2108       GLchar **VaryingNames;  /**< Array [NumVarying] of char * */
2109    } TransformFeedback;
2110
2111    /* post-link info: */
2112    struct gl_vertex_program *VertexProgram;     /**< Linked vertex program */
2113    struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */
2114    struct gl_geometry_program *GeometryProgram; /**< Linked geometry prog */
2115    struct gl_uniform_list *Uniforms;
2116    struct gl_program_parameter_list *Varying;
2117    GLboolean LinkStatus;   /**< GL_LINK_STATUS */
2118    GLboolean Validated;
2119    GLboolean _Used;        /**< Ever used for drawing? */
2120    GLchar *InfoLog;
2121 };
2122
2123
2124 #define GLSL_DUMP      0x1  /**< Dump shaders to stdout */
2125 #define GLSL_LOG       0x2  /**< Write shaders to files */
2126 #define GLSL_OPT       0x4  /**< Force optimizations (override pragmas) */
2127 #define GLSL_NO_OPT    0x8  /**< Force no optimizations (override pragmas) */
2128 #define GLSL_UNIFORMS 0x10  /**< Print glUniform calls */
2129 #define GLSL_NOP_VERT 0x20  /**< Force no-op vertex shaders */
2130 #define GLSL_NOP_FRAG 0x40  /**< Force no-op fragment shaders */
2131 #define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */
2132
2133
2134 /**
2135  * Context state for GLSL vertex/fragment shaders.
2136  */
2137 struct gl_shader_state
2138 {
2139    struct gl_shader_program *CurrentProgram; /**< The user-bound program */
2140    /** Driver-selectable options: */
2141    GLboolean EmitHighLevelInstructions; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2142    GLboolean EmitContReturn;            /**< Emit CONT/RET opcodes? */
2143    GLboolean EmitCondCodes;             /**< Use condition codes? */
2144    GLboolean EmitComments;              /**< Annotated instructions */
2145    GLboolean EmitNVTempInitialization;  /**< 0-fill NV temp registers */
2146    void *MemPool;
2147    GLbitfield Flags;                    /**< Mask of GLSL_x flags */
2148    struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
2149 };
2150
2151
2152 /**
2153  * Transform feedback object state
2154  */
2155 struct gl_transform_feedback_object
2156 {
2157    GLuint Name;  /**< AKA the object ID */
2158    GLint RefCount;
2159    GLboolean Active;  /**< Is transform feedback enabled? */
2160    GLboolean Paused;  /**< Is transform feedback paused? */
2161
2162    /** The feedback buffers */
2163    GLuint BufferNames[MAX_FEEDBACK_ATTRIBS];
2164    struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS];
2165
2166    /** Start of feedback data in dest buffer */
2167    GLintptr Offset[MAX_FEEDBACK_ATTRIBS];
2168    /** Max data to put into dest buffer (in bytes) */
2169    GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS];
2170 };
2171
2172
2173 /**
2174  * Context state for transform feedback.
2175  */
2176 struct gl_transform_feedback
2177 {
2178    GLenum Mode;       /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2179
2180    GLboolean RasterDiscard;  /**< GL_RASTERIZER_DISCARD */
2181
2182    /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2183    struct gl_buffer_object *CurrentBuffer;
2184
2185    /** The table of all transform feedback objects */
2186    struct _mesa_HashTable *Objects;
2187
2188    /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2189    struct gl_transform_feedback_object *CurrentObject;
2190
2191    /** The default xform-fb object (Name==0) */
2192    struct gl_transform_feedback_object *DefaultObject;
2193 };
2194
2195
2196
2197 /**
2198  * State which can be shared by multiple contexts:
2199  */
2200 struct gl_shared_state
2201 {
2202    _glthread_Mutex Mutex;                  /**< for thread safety */
2203    GLint RefCount;                         /**< Reference count */
2204    struct _mesa_HashTable *DisplayList;    /**< Display lists hash table */
2205    struct _mesa_HashTable *TexObjects;     /**< Texture objects hash table */
2206
2207    /** Default texture objects (shared by all texture units) */
2208    struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
2209
2210    /** Fallback texture used when a bound texture is incomplete */
2211    struct gl_texture_object *FallbackTex;
2212
2213    /**
2214     * \name Thread safety and statechange notification for texture
2215     * objects.
2216     *
2217     * \todo Improve the granularity of locking.
2218     */
2219    /*@{*/
2220    _glthread_Mutex TexMutex;            /**< texobj thread safety */
2221    GLuint TextureStateStamp;            /**< state notification for shared tex */
2222    /*@}*/
2223
2224    /** Default buffer object for vertex arrays that aren't in VBOs */
2225    struct gl_buffer_object *NullBufferObj;
2226
2227    /**
2228     * \name Vertex/geometry/fragment programs
2229     */
2230    /*@{*/
2231    struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2232 #if FEATURE_ARB_vertex_program
2233    struct gl_vertex_program *DefaultVertexProgram;
2234 #endif
2235 #if FEATURE_ARB_fragment_program
2236    struct gl_fragment_program *DefaultFragmentProgram;
2237 #endif
2238 #if FEATURE_ARB_geometry_shader4
2239    struct gl_geometry_program *DefaultGeometryProgram;
2240 #endif
2241    /*@}*/
2242
2243 #if FEATURE_ATI_fragment_shader
2244    struct _mesa_HashTable *ATIShaders;
2245    struct ati_fragment_shader *DefaultFragmentShader;
2246 #endif
2247
2248 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2249    struct _mesa_HashTable *BufferObjects;
2250 #endif
2251
2252 #if FEATURE_ARB_shader_objects
2253    /** Table of both gl_shader and gl_shader_program objects */
2254    struct _mesa_HashTable *ShaderObjects;
2255 #endif
2256
2257 #if FEATURE_EXT_framebuffer_object
2258    struct _mesa_HashTable *RenderBuffers;
2259    struct _mesa_HashTable *FrameBuffers;
2260 #endif
2261
2262 #if FEATURE_ARB_sync
2263    struct simple_node SyncObjects;
2264 #endif
2265
2266    void *DriverData;  /**< Device driver shared state */
2267 };
2268
2269
2270
2271
2272 /**
2273  * A renderbuffer stores colors or depth values or stencil values.
2274  * A framebuffer object will have a collection of these.
2275  * Data are read/written to the buffer with a handful of Get/Put functions.
2276  *
2277  * Instances of this object are allocated with the Driver's NewRenderbuffer
2278  * hook.  Drivers will likely wrap this class inside a driver-specific
2279  * class to simulate inheritance.
2280  */
2281 struct gl_renderbuffer
2282 {
2283 #define RB_MAGIC 0xaabbccdd
2284    int Magic; /** XXX TEMPORARY DEBUG INFO */
2285    _glthread_Mutex Mutex;                  /**< for thread safety */
2286    GLuint ClassID;        /**< Useful for drivers */
2287    GLuint Name;
2288    GLint RefCount;
2289    GLuint Width, Height;
2290    GLboolean Purgeable;   /**< Is the buffer purgeable under memory pressure? */
2291
2292    GLenum InternalFormat; /**< The user-specified format */
2293    GLenum _BaseFormat;    /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2294                                GL_STENCIL_INDEX. */
2295    GLuint Format;         /**< The actual format: MESA_FORMAT_x */
2296
2297    GLubyte NumSamples;
2298
2299    GLenum DataType;      /**< Type of values passed to the Get/Put functions */
2300    GLvoid *Data;        /**< This may not be used by some kinds of RBs */
2301
2302    /* Used to wrap one renderbuffer around another: */
2303    struct gl_renderbuffer *Wrapped;
2304
2305    /* Delete this renderbuffer */
2306    void (*Delete)(struct gl_renderbuffer *rb);
2307
2308    /* Allocate new storage for this renderbuffer */
2309    GLboolean (*AllocStorage)(GLcontext *ctx, struct gl_renderbuffer *rb,
2310                              GLenum internalFormat,
2311                              GLuint width, GLuint height);
2312
2313    /* Lock/Unlock are called before/after calling the Get/Put functions.
2314     * Not sure this is the right place for these yet.
2315    void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2316    void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2317     */
2318
2319    /* Return a pointer to the element/pixel at (x,y).
2320     * Should return NULL if the buffer memory can't be directly addressed.
2321     */
2322    void *(*GetPointer)(GLcontext *ctx, struct gl_renderbuffer *rb,
2323                        GLint x, GLint y);
2324
2325    /* Get/Read a row of values.
2326     * The values will be of format _BaseFormat and type DataType.
2327     */
2328    void (*GetRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2329                   GLint x, GLint y, void *values);
2330
2331    /* Get/Read values at arbitrary locations.
2332     * The values will be of format _BaseFormat and type DataType.
2333     */
2334    void (*GetValues)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2335                      const GLint x[], const GLint y[], void *values);
2336
2337    /* Put/Write a row of values.
2338     * The values will be of format _BaseFormat and type DataType.
2339     */
2340    void (*PutRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2341                   GLint x, GLint y, const void *values, const GLubyte *mask);
2342
2343    /* Put/Write a row of RGB values.  This is a special-case routine that's
2344     * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2345     * a common case for glDrawPixels and some triangle routines.
2346     * The values will be of format GL_RGB and type DataType.
2347     */
2348    void (*PutRowRGB)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2349                     GLint x, GLint y, const void *values, const GLubyte *mask);
2350
2351
2352    /* Put/Write a row of identical values.
2353     * The values will be of format _BaseFormat and type DataType.
2354     */
2355    void (*PutMonoRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2356                      GLint x, GLint y, const void *value, const GLubyte *mask);
2357
2358    /* Put/Write values at arbitrary locations.
2359     * The values will be of format _BaseFormat and type DataType.
2360     */
2361    void (*PutValues)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2362                      const GLint x[], const GLint y[], const void *values,
2363                      const GLubyte *mask);
2364    /* Put/Write identical values at arbitrary locations.
2365     * The values will be of format _BaseFormat and type DataType.
2366     */
2367    void (*PutMonoValues)(GLcontext *ctx, struct gl_renderbuffer *rb,
2368                          GLuint count, const GLint x[], const GLint y[],
2369                          const void *value, const GLubyte *mask);
2370 };
2371
2372
2373 /**
2374  * A renderbuffer attachment points to either a texture object (and specifies
2375  * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2376  */
2377 struct gl_renderbuffer_attachment
2378 {
2379    GLenum Type;  /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2380    GLboolean Complete;
2381
2382    /**
2383     * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2384     * application supplied renderbuffer object.
2385     */
2386    struct gl_renderbuffer *Renderbuffer;
2387
2388    /**
2389     * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2390     * supplied texture object.
2391     */
2392    struct gl_texture_object *Texture;
2393    GLuint TextureLevel; /**< Attached mipmap level. */
2394    GLuint CubeMapFace;  /**< 0 .. 5, for cube map textures. */
2395    GLuint Zoffset;      /**< Slice for 3D textures,  or layer for both 1D
2396                          * and 2D array textures */
2397 };
2398
2399
2400 /**
2401  * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2402  * In C++ terms, think of this as a base class from which device drivers
2403  * will make derived classes.
2404  */
2405 struct gl_framebuffer
2406 {
2407    _glthread_Mutex Mutex;  /**< for thread safety */
2408    /**
2409     * If zero, this is a window system framebuffer.  If non-zero, this
2410     * is a FBO framebuffer; note that for some devices (i.e. those with
2411     * a natural pixel coordinate system for FBOs that differs from the
2412     * OpenGL/Mesa coordinate system), this means that the viewport,
2413     * polygon face orientation, and polygon stipple will have to be inverted.
2414     */
2415    GLuint Name;
2416
2417    GLint RefCount;
2418    GLboolean DeletePending;
2419
2420    /**
2421     * The framebuffer's visual. Immutable if this is a window system buffer.
2422     * Computed from attachments if user-made FBO.
2423     */
2424    GLvisual Visual;
2425
2426    GLboolean Initialized;
2427
2428    GLuint Width, Height;        /**< size of frame buffer in pixels */
2429
2430    /** \name  Drawing bounds (Intersection of buffer size and scissor box) */
2431    /*@{*/
2432    GLint _Xmin, _Xmax;  /**< inclusive */
2433    GLint _Ymin, _Ymax;  /**< exclusive */
2434    /*@}*/
2435
2436    /** \name  Derived Z buffer stuff */
2437    /*@{*/
2438    GLuint _DepthMax;    /**< Max depth buffer value */
2439    GLfloat _DepthMaxF;  /**< Float max depth buffer value */
2440    GLfloat _MRD;        /**< minimum resolvable difference in Z values */
2441    /*@}*/
2442
2443    /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2444    GLenum _Status;
2445
2446    /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2447    struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
2448
2449    /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2450     * attribute group and GL_PIXEL attribute group, respectively.
2451     */
2452    GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
2453    GLenum ColorReadBuffer;
2454
2455    /** Computed from ColorDraw/ReadBuffer above */
2456    GLuint _NumColorDrawBuffers;
2457    GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
2458    GLint _ColorReadBufferIndex; /* -1 = None */
2459    struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
2460    struct gl_renderbuffer *_ColorReadBuffer;
2461
2462    /** The Actual depth/stencil buffers to use.  May be wrappers around the
2463     * depth/stencil buffers attached above. */
2464    struct gl_renderbuffer *_DepthBuffer;
2465    struct gl_renderbuffer *_StencilBuffer;
2466
2467    /** Delete this framebuffer */
2468    void (*Delete)(struct gl_framebuffer *fb);
2469 };
2470
2471
2472 /**
2473  * Limits for vertex and fragment programs.
2474  */
2475 struct gl_program_constants
2476 {
2477    /* logical limits */
2478    GLuint MaxInstructions;
2479    GLuint MaxAluInstructions; /* fragment programs only, for now */
2480    GLuint MaxTexInstructions; /* fragment programs only, for now */
2481    GLuint MaxTexIndirections; /* fragment programs only, for now */
2482    GLuint MaxAttribs;
2483    GLuint MaxTemps;
2484    GLuint MaxAddressRegs; /* vertex program only, for now */
2485    GLuint MaxParameters;
2486    GLuint MaxLocalParams;
2487    GLuint MaxEnvParams;
2488    /* native/hardware limits */
2489    GLuint MaxNativeInstructions;
2490    GLuint MaxNativeAluInstructions; /* fragment programs only, for now */
2491    GLuint MaxNativeTexInstructions; /* fragment programs only, for now */
2492    GLuint MaxNativeTexIndirections; /* fragment programs only, for now */
2493    GLuint MaxNativeAttribs;
2494    GLuint MaxNativeTemps;
2495    GLuint MaxNativeAddressRegs; /* vertex program only, for now */
2496    GLuint MaxNativeParameters;
2497    /* For shaders */
2498    GLuint MaxUniformComponents;
2499 #if FEATURE_ARB_geometry_shader4
2500    GLuint MaxGeometryTextureImageUnits;
2501    GLuint MaxGeometryVaryingComponents;
2502    GLuint MaxVertexVaryingComponents;
2503    GLuint MaxGeometryUniformComponents;
2504    GLuint MaxGeometryOutputVertices;
2505    GLuint MaxGeometryTotalOutputComponents;
2506 #endif
2507 };
2508
2509
2510 /**
2511  * Constants which may be overridden by device driver during context creation
2512  * but are never changed after that.
2513  */
2514 struct gl_constants
2515 {
2516    GLint MaxTextureLevels;      /**< Max mipmap levels. */
2517    GLint Max3DTextureLevels;    /**< Max mipmap levels for 3D textures */
2518    GLint MaxCubeTextureLevels;  /**< Max mipmap levels for cube textures */
2519    GLint MaxArrayTextureLayers; /**< Max layers in array textures */
2520    GLint MaxTextureRectSize;    /**< Max rectangle texture size, in pixes */
2521    GLuint MaxTextureCoordUnits;
2522    GLuint MaxTextureImageUnits;
2523    GLuint MaxVertexTextureImageUnits;
2524    GLuint MaxCombinedTextureImageUnits;
2525    GLuint MaxTextureUnits;           /**< = MIN(CoordUnits, ImageUnits) */
2526    GLfloat MaxTextureMaxAnisotropy;  /**< GL_EXT_texture_filter_anisotropic */
2527    GLfloat MaxTextureLodBias;        /**< GL_EXT_texture_lod_bias */
2528
2529    GLuint MaxArrayLockSize;
2530
2531    GLint SubPixelBits;
2532
2533    GLfloat MinPointSize, MaxPointSize;       /**< aliased */
2534    GLfloat MinPointSizeAA, MaxPointSizeAA;   /**< antialiased */
2535    GLfloat PointSizeGranularity;
2536    GLfloat MinLineWidth, MaxLineWidth;       /**< aliased */
2537    GLfloat MinLineWidthAA, MaxLineWidthAA;   /**< antialiased */
2538    GLfloat LineWidthGranularity;
2539
2540    GLuint MaxColorTableSize;
2541    GLuint MaxConvolutionWidth;
2542    GLuint MaxConvolutionHeight;
2543
2544    GLuint MaxClipPlanes;
2545    GLuint MaxLights;
2546    GLfloat MaxShininess;                     /**< GL_NV_light_max_exponent */
2547    GLfloat MaxSpotExponent;                  /**< GL_NV_light_max_exponent */
2548
2549    GLuint MaxViewportWidth, MaxViewportHeight;
2550
2551    struct gl_program_constants VertexProgram;   /**< GL_ARB_vertex_program */
2552    struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */
2553    struct gl_program_constants GeometryProgram;  /**< GL_ARB_geometry_shader4 */
2554    GLuint MaxProgramMatrices;
2555    GLuint MaxProgramMatrixStackDepth;
2556
2557    /** vertex array / buffer object bounds checking */
2558    GLboolean CheckArrayBounds;
2559
2560    GLuint MaxDrawBuffers;    /**< GL_ARB_draw_buffers */
2561
2562    GLuint MaxColorAttachments;   /**< GL_EXT_framebuffer_object */
2563    GLuint MaxRenderbufferSize;   /**< GL_EXT_framebuffer_object */
2564    GLuint MaxSamples;            /**< GL_ARB_framebuffer_object */
2565
2566    GLuint MaxVarying;  /**< Number of float[4] varying parameters */
2567
2568    GLbitfield SupportedBumpUnits; /**> units supporting GL_ATI_envmap_bumpmap as targets */
2569
2570    /**
2571     * Maximum amount of time, measured in nanseconds, that the server can wait.
2572     */
2573    GLuint64 MaxServerWaitTimeout;
2574
2575    /** GL_EXT_provoking_vertex */
2576    GLboolean QuadsFollowProvokingVertexConvention;
2577
2578    /** OpenGL version 3.0 */
2579    GLbitfield ContextFlags;  /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2580
2581    /** OpenGL version 3.2 */
2582    GLbitfield ProfileMask;   /**< Mask of CONTEXT_x_PROFILE_BIT */
2583
2584    /** GL_EXT_transform_feedback */
2585    GLuint MaxTransformFeedbackSeparateAttribs;
2586    GLuint MaxTransformFeedbackSeparateComponents;
2587    GLuint MaxTransformFeedbackInterleavedComponents;
2588 };
2589
2590
2591 /**
2592  * Enable flag for each OpenGL extension.  Different device drivers will
2593  * enable different extensions at runtime.
2594  */
2595 struct gl_extensions
2596 {
2597    GLboolean dummy;  /* don't remove this! */
2598    GLboolean ARB_blend_func_extended;
2599    GLboolean ARB_copy_buffer;
2600    GLboolean ARB_depth_texture;
2601    GLboolean ARB_depth_clamp;
2602    GLboolean ARB_draw_buffers;
2603    GLboolean ARB_draw_elements_base_vertex;
2604    GLboolean ARB_draw_instanced;
2605    GLboolean ARB_fragment_coord_conventions;
2606    GLboolean ARB_fragment_program;
2607    GLboolean ARB_fragment_program_shadow;
2608    GLboolean ARB_fragment_shader;
2609    GLboolean ARB_framebuffer_object;
2610    GLboolean ARB_explicit_attrib_location;
2611    GLboolean ARB_geometry_shader4;
2612    GLboolean ARB_half_float_pixel;
2613    GLboolean ARB_half_float_vertex;
2614    GLboolean ARB_imaging;
2615    GLboolean ARB_instanced_arrays;
2616    GLboolean ARB_map_buffer_range;
2617    GLboolean ARB_multisample;
2618    GLboolean ARB_multitexture;
2619    GLboolean ARB_occlusion_query;
2620    GLboolean ARB_occlusion_query2;
2621    GLboolean ARB_point_sprite;
2622    GLboolean ARB_sampler_objects;
2623    GLboolean ARB_seamless_cube_map;
2624    GLboolean ARB_shader_objects;
2625    GLboolean ARB_shading_language_100;
2626    GLboolean ARB_shading_language_120;
2627    GLboolean ARB_shadow;
2628    GLboolean ARB_shadow_ambient;
2629    GLboolean ARB_sync;
2630    GLboolean ARB_texture_border_clamp;
2631    GLboolean ARB_texture_buffer_object;
2632    GLboolean ARB_texture_compression;
2633    GLboolean ARB_texture_cube_map;
2634    GLboolean ARB_texture_env_combine;
2635    GLboolean ARB_texture_env_crossbar;
2636    GLboolean ARB_texture_env_dot3;
2637    GLboolean ARB_texture_float;
2638    GLboolean ARB_texture_mirrored_repeat;
2639    GLboolean ARB_texture_multisample;
2640    GLboolean ARB_texture_non_power_of_two;
2641    GLboolean ARB_texture_rgb10_a2ui;
2642    GLboolean ARB_timer_query;
2643    GLboolean ARB_transform_feedback2;
2644    GLboolean ARB_transpose_matrix;
2645    GLboolean ARB_uniform_buffer_object;
2646    GLboolean ARB_vertex_array_object;
2647    GLboolean ARB_vertex_buffer_object;
2648    GLboolean ARB_vertex_program;
2649    GLboolean ARB_vertex_shader;
2650    GLboolean ARB_vertex_type_2_10_10_10_rev;
2651    GLboolean ARB_window_pos;
2652    GLboolean EXT_abgr;
2653    GLboolean EXT_bgra;
2654    GLboolean EXT_blend_color;
2655    GLboolean EXT_blend_equation_separate;
2656    GLboolean EXT_blend_func_separate;
2657    GLboolean EXT_blend_logic_op;
2658    GLboolean EXT_blend_minmax;
2659    GLboolean EXT_blend_subtract;
2660    GLboolean EXT_clip_volume_hint;
2661    GLboolean EXT_cull_vertex;
2662    GLboolean EXT_convolution;
2663    GLboolean EXT_compiled_vertex_array;
2664    GLboolean EXT_copy_texture;
2665    GLboolean EXT_depth_bounds_test;
2666    GLboolean EXT_draw_buffers2;
2667    GLboolean EXT_draw_range_elements;
2668    GLboolean EXT_fog_coord;
2669    GLboolean EXT_framebuffer_blit;
2670    GLboolean EXT_framebuffer_multisample;
2671    GLboolean EXT_framebuffer_object;
2672    GLboolean EXT_framebuffer_sRGB;
2673    GLboolean EXT_gpu_program_parameters;
2674    GLboolean EXT_histogram;
2675    GLboolean EXT_multi_draw_arrays;
2676    GLboolean EXT_paletted_texture;
2677    GLboolean EXT_packed_depth_stencil;
2678    GLboolean EXT_packed_float;
2679    GLboolean EXT_packed_pixels;
2680    GLboolean EXT_pixel_buffer_object;
2681    GLboolean EXT_point_parameters;
2682    GLboolean EXT_polygon_offset;
2683    GLboolean EXT_provoking_vertex;
2684    GLboolean EXT_rescale_normal;
2685    GLboolean EXT_shadow_funcs;
2686    GLboolean EXT_secondary_color;
2687    GLboolean EXT_separate_specular_color;
2688    GLboolean EXT_shared_exponent;
2689    GLboolean EXT_shared_texture_palette;
2690    GLboolean EXT_stencil_wrap;
2691    GLboolean EXT_stencil_two_side;
2692    GLboolean EXT_subtexture;
2693    GLboolean EXT_texture;
2694    GLboolean EXT_texture_object;
2695    GLboolean EXT_texture3D;
2696    GLboolean EXT_texture_array;
2697    GLboolean EXT_texture_compression_s3tc;
2698    GLboolean EXT_texture_compression_rgtc;
2699    GLboolean EXT_texture_env_add;
2700    GLboolean EXT_texture_env_combine;
2701    GLboolean EXT_texture_env_dot3;
2702    GLboolean EXT_texture_filter_anisotropic;
2703    GLboolean EXT_texture_integer;
2704    GLboolean EXT_texture_lod_bias;
2705    GLboolean EXT_texture_mirror_clamp;
2706    GLboolean EXT_texture_sRGB;
2707    GLboolean EXT_texture_swizzle;
2708    GLboolean EXT_transform_feedback;
2709    GLboolean EXT_timer_query;
2710    GLboolean EXT_vertex_array;
2711    GLboolean EXT_vertex_array_bgra;
2712    GLboolean EXT_vertex_array_set;
2713    /* vendor extensions */
2714    GLboolean APPLE_client_storage;
2715    GLboolean APPLE_packed_pixels;
2716    GLboolean APPLE_vertex_array_object;
2717    GLboolean APPLE_object_purgeable;
2718    GLboolean ATI_envmap_bumpmap;
2719    GLboolean ATI_texture_mirror_once;
2720    GLboolean ATI_texture_env_combine3;
2721    GLboolean ATI_fragment_shader;
2722    GLboolean ATI_separate_stencil;
2723    GLboolean IBM_rasterpos_clip;
2724    GLboolean IBM_multimode_draw_arrays;
2725    GLboolean MESA_pack_invert;
2726    GLboolean MESA_packed_depth_stencil;
2727    GLboolean MESA_resize_buffers;
2728    GLboolean MESA_ycbcr_texture;
2729    GLboolean MESA_texture_array;
2730    GLboolean MESA_texture_signed_rgba;
2731    GLboolean NV_blend_square;
2732    GLboolean NV_conditional_render;
2733    GLboolean NV_fragment_program;
2734    GLboolean NV_fragment_program_option;
2735    GLboolean NV_light_max_exponent;
2736    GLboolean NV_point_sprite;
2737    GLboolean NV_primitive_restart;
2738    GLboolean NV_texgen_reflection;
2739    GLboolean NV_texture_env_combine4;
2740    GLboolean NV_texture_rectangle;
2741    GLboolean NV_vertex_program;
2742    GLboolean NV_vertex_program1_1;
2743    GLboolean OES_read_format;
2744    GLboolean SGI_color_matrix;
2745    GLboolean SGI_color_table;
2746    GLboolean SGI_texture_color_table;
2747    GLboolean SGIS_generate_mipmap;
2748    GLboolean SGIS_texture_edge_clamp;
2749    GLboolean SGIS_texture_lod;
2750    GLboolean TDFX_texture_compression_FXT1;
2751    GLboolean S3_s3tc;
2752 #if FEATURE_OES_EGL_image
2753    GLboolean OES_EGL_image;
2754 #endif
2755 #if FEATURE_OES_draw_texture
2756    GLboolean OES_draw_texture;
2757 #endif /* FEATURE_OES_draw_texture */
2758    /** The extension string */
2759    const GLubyte *String;
2760    /** Number of supported extensions */
2761    GLuint Count;
2762 };
2763
2764
2765 /**
2766  * A stack of matrices (projection, modelview, color, texture, etc).
2767  */
2768 struct gl_matrix_stack
2769 {
2770    GLmatrix *Top;      /**< points into Stack */
2771    GLmatrix *Stack;    /**< array [MaxDepth] of GLmatrix */
2772    GLuint Depth;       /**< 0 <= Depth < MaxDepth */
2773    GLuint MaxDepth;    /**< size of Stack[] array */
2774    GLuint DirtyFlag;   /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2775 };
2776
2777
2778 /**
2779  * \name Bits for image transfer operations
2780  * \sa __GLcontextRec::ImageTransferState.
2781  */
2782 /*@{*/
2783 #define IMAGE_SCALE_BIAS_BIT                      0x1
2784 #define IMAGE_SHIFT_OFFSET_BIT                    0x2
2785 #define IMAGE_MAP_COLOR_BIT                       0x4
2786 #define IMAGE_COLOR_TABLE_BIT                     0x8
2787 #define IMAGE_CONVOLUTION_BIT                     0x10
2788 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS         0x20
2789 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT    0x40
2790 #define IMAGE_COLOR_MATRIX_BIT                    0x80
2791 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT   0x100
2792 #define IMAGE_HISTOGRAM_BIT                       0x200
2793 #define IMAGE_MIN_MAX_BIT                         0x400
2794 #define IMAGE_CLAMP_BIT                           0x800
2795
2796
2797 /** Pixel Transfer ops up to convolution */
2798 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT |     \
2799                                     IMAGE_SHIFT_OFFSET_BIT |   \
2800                                     IMAGE_MAP_COLOR_BIT |      \
2801                                     IMAGE_COLOR_TABLE_BIT)
2802
2803 /** Pixel transfer ops after convolution */
2804 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS |      \
2805                                      IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2806                                      IMAGE_COLOR_MATRIX_BIT |                 \
2807                                      IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2808                                      IMAGE_HISTOGRAM_BIT |                    \
2809                                      IMAGE_MIN_MAX_BIT)
2810 /*@}*/
2811
2812
2813 /**
2814  * \name Bits to indicate what state has changed.
2815  *
2816  * 4 unused flags.
2817  */
2818 /*@{*/
2819 #define _NEW_MODELVIEW          0x1        /**< __GLcontextRec::ModelView */
2820 #define _NEW_PROJECTION         0x2        /**< __GLcontextRec::Projection */
2821 #define _NEW_TEXTURE_MATRIX     0x4        /**< __GLcontextRec::TextureMatrix */
2822 #define _NEW_COLOR_MATRIX       0x8        /**< __GLcontextRec::ColorMatrix */
2823 #define _NEW_ACCUM              0x10       /**< __GLcontextRec::Accum */
2824 #define _NEW_COLOR              0x20       /**< __GLcontextRec::Color */
2825 #define _NEW_DEPTH              0x40       /**< __GLcontextRec::Depth */
2826 #define _NEW_EVAL               0x80       /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2827 #define _NEW_FOG                0x100      /**< __GLcontextRec::Fog */
2828 #define _NEW_HINT               0x200      /**< __GLcontextRec::Hint */
2829 #define _NEW_LIGHT              0x400      /**< __GLcontextRec::Light */
2830 #define _NEW_LINE               0x800      /**< __GLcontextRec::Line */
2831 #define _NEW_PIXEL              0x1000     /**< __GLcontextRec::Pixel */
2832 #define _NEW_POINT              0x2000     /**< __GLcontextRec::Point */
2833 #define _NEW_POLYGON            0x4000     /**< __GLcontextRec::Polygon */
2834 #define _NEW_POLYGONSTIPPLE     0x8000     /**< __GLcontextRec::PolygonStipple */
2835 #define _NEW_SCISSOR            0x10000    /**< __GLcontextRec::Scissor */
2836 #define _NEW_STENCIL            0x20000    /**< __GLcontextRec::Stencil */
2837 #define _NEW_TEXTURE            0x40000    /**< __GLcontextRec::Texture */
2838 #define _NEW_TRANSFORM          0x80000    /**< __GLcontextRec::Transform */
2839 #define _NEW_VIEWPORT           0x100000   /**< __GLcontextRec::Viewport */
2840 #define _NEW_PACKUNPACK         0x200000   /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2841 #define _NEW_ARRAY              0x400000   /**< __GLcontextRec::Array */
2842 #define _NEW_RENDERMODE         0x800000   /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2843 #define _NEW_BUFFERS            0x1000000  /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2844 #define _NEW_MULTISAMPLE        0x2000000  /**< __GLcontextRec::Multisample */
2845 #define _NEW_TRACK_MATRIX       0x4000000  /**< __GLcontextRec::VertexProgram */
2846 #define _NEW_PROGRAM            0x8000000  /**< __GLcontextRec::VertexProgram */
2847 #define _NEW_CURRENT_ATTRIB     0x10000000  /**< __GLcontextRec::Current */
2848 #define _NEW_PROGRAM_CONSTANTS  0x20000000
2849 #define _NEW_BUFFER_OBJECT      0x40000000
2850 #define _NEW_ALL ~0
2851 /*@}*/
2852
2853
2854 /**
2855  * \name Bits to track array state changes
2856  *
2857  * Also used to summarize array enabled.
2858  */
2859 /*@{*/
2860 #define _NEW_ARRAY_VERTEX           VERT_BIT_POS
2861 #define _NEW_ARRAY_WEIGHT           VERT_BIT_WEIGHT
2862 #define _NEW_ARRAY_NORMAL           VERT_BIT_NORMAL
2863 #define _NEW_ARRAY_COLOR0           VERT_BIT_COLOR0
2864 #define _NEW_ARRAY_COLOR1           VERT_BIT_COLOR1
2865 #define _NEW_ARRAY_FOGCOORD         VERT_BIT_FOG
2866 #define _NEW_ARRAY_INDEX            VERT_BIT_COLOR_INDEX
2867 #define _NEW_ARRAY_EDGEFLAG         VERT_BIT_EDGEFLAG
2868 #define _NEW_ARRAY_POINT_SIZE       VERT_BIT_COLOR_INDEX  /* aliased */
2869 #define _NEW_ARRAY_TEXCOORD_0       VERT_BIT_TEX0
2870 #define _NEW_ARRAY_TEXCOORD_1       VERT_BIT_TEX1
2871 #define _NEW_ARRAY_TEXCOORD_2       VERT_BIT_TEX2
2872 #define _NEW_ARRAY_TEXCOORD_3       VERT_BIT_TEX3
2873 #define _NEW_ARRAY_TEXCOORD_4       VERT_BIT_TEX4
2874 #define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5
2875 #define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6
2876 #define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7
2877 #define _NEW_ARRAY_ATTRIB_0         VERT_BIT_GENERIC0  /* start at bit 16 */
2878 #define _NEW_ARRAY_ALL              0xffffffff
2879
2880
2881 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2882 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2883 /*@}*/
2884
2885
2886
2887 /**
2888  * \name A bunch of flags that we think might be useful to drivers.
2889  *
2890  * Set in the __GLcontextRec::_TriangleCaps bitfield.
2891  */
2892 /*@{*/
2893 #define DD_FLATSHADE                0x1
2894 #define DD_SEPARATE_SPECULAR        0x2
2895 #define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
2896 #define DD_TRI_LIGHT_TWOSIDE        0x8
2897 #define DD_TRI_UNFILLED             0x10
2898 #define DD_TRI_SMOOTH               0x20
2899 #define DD_TRI_STIPPLE              0x40
2900 #define DD_TRI_OFFSET               0x80
2901 #define DD_LINE_SMOOTH              0x100
2902 #define DD_LINE_STIPPLE             0x200
2903 #define DD_LINE_WIDTH               0x400
2904 #define DD_POINT_SMOOTH             0x800
2905 #define DD_POINT_SIZE               0x1000
2906 #define DD_POINT_ATTEN              0x2000
2907 #define DD_TRI_TWOSTENCIL           0x4000
2908 /*@}*/
2909
2910
2911 /**
2912  * \name Define the state changes under which each of these bits might change
2913  */
2914 /*@{*/
2915 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
2916 #define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2917 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
2918 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
2919 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
2920 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
2921 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
2922 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
2923 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
2924 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
2925 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
2926 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
2927 #define _DD_NEW_POINT_SIZE               _NEW_POINT
2928 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
2929 /*@}*/
2930
2931
2932 /**
2933  * Composite state flags
2934  */
2935 /*@{*/
2936 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |         \
2937                                            _NEW_TEXTURE |       \
2938                                            _NEW_POINT |         \
2939                                            _NEW_PROGRAM |       \
2940                                            _NEW_MODELVIEW)
2941
2942 #define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |         \
2943                                            _NEW_TEXTURE)
2944
2945 #define _MESA_NEW_TRANSFER_STATE          (_NEW_PIXEL |         \
2946                                            _NEW_COLOR_MATRIX)
2947 /*@}*/
2948
2949
2950
2951
2952 /* This has to be included here. */
2953 #include "dd.h"
2954
2955
2956 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2957
2958 /**
2959  * Core Mesa's support for tnl modules:
2960  */
2961 struct gl_tnl_module
2962 {
2963    /**
2964     * Vertex format to be lazily swapped into current dispatch.
2965     */
2966    const GLvertexformat *Current;
2967
2968    /**
2969     * \name Record of functions swapped out.
2970     * On restore, only need to swap these functions back in.
2971     */
2972    /*@{*/
2973    struct {
2974        _glapi_proc * location;
2975        _glapi_proc function;
2976    } Swapped[NUM_VERTEX_FORMAT_ENTRIES];
2977    GLuint SwapCount;
2978    /*@}*/
2979 };
2980
2981
2982 /**
2983  * Display list flags.
2984  * Strictly this is a tnl-private concept, but it doesn't seem
2985  * worthwhile adding a tnl private structure just to hold this one bit
2986  * of information:
2987  */
2988 #define DLIST_DANGLING_REFS     0x1
2989
2990
2991 /** Opaque declaration of display list payload data type */
2992 union gl_dlist_node;
2993
2994
2995 /**
2996  * Provide a location where information about a display list can be
2997  * collected.  Could be extended with driverPrivate structures,
2998  * etc. in the future.
2999  */
3000 struct gl_display_list
3001 {
3002    GLuint Name;
3003    GLbitfield Flags;  /**< DLIST_x flags */
3004    /** The dlist commands are in a linked list of nodes */
3005    union gl_dlist_node *Head;
3006 };
3007
3008
3009 /**
3010  * State used during display list compilation and execution.
3011  */
3012 struct gl_dlist_state
3013 {
3014    GLuint CallDepth;            /**< Current recursion calling depth */
3015
3016    struct gl_display_list *CurrentList; /**< List currently being compiled */
3017    union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
3018    GLuint CurrentPos;           /**< Index into current block of nodes */
3019
3020    GLvertexformat ListVtxfmt;
3021
3022    GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
3023    GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
3024
3025    GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
3026    GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
3027
3028    GLubyte ActiveIndex;
3029    GLfloat CurrentIndex;
3030
3031    GLubyte ActiveEdgeFlag;
3032    GLboolean CurrentEdgeFlag;
3033
3034    struct {
3035       /* State known to have been set by the currently-compiling display
3036        * list.  Used to eliminate some redundant state changes.
3037        */
3038       GLenum ShadeModel;
3039    } Current;
3040 };
3041
3042 /**
3043  * Enum for the OpenGL APIs we know about and may support.
3044  */
3045 typedef enum {
3046    API_OPENGL,
3047    API_OPENGLES,
3048    API_OPENGLES2
3049 } gl_api;
3050
3051 /**
3052  * Mesa rendering context.
3053  *
3054  * This is the central context data structure for Mesa.  Almost all
3055  * OpenGL state is contained in this structure.
3056  * Think of this as a base class from which device drivers will derive
3057  * sub classes.
3058  *
3059  * The GLcontext typedef names this structure.
3060  */
3061 struct __GLcontextRec
3062 {
3063    /** State possibly shared with other contexts in the address space */
3064    struct gl_shared_state *Shared;
3065
3066    /** \name API function pointer tables */
3067    /*@{*/
3068    gl_api API;
3069    struct _glapi_table *Save;   /**< Display list save functions */
3070    struct _glapi_table *Exec;   /**< Execute functions */
3071    struct _glapi_table *CurrentDispatch;  /**< == Save or Exec !! */
3072    /*@}*/
3073
3074    GLvisual Visual;
3075    GLframebuffer *DrawBuffer;   /**< buffer for writing */
3076    GLframebuffer *ReadBuffer;   /**< buffer for reading */
3077    GLframebuffer *WinSysDrawBuffer;  /**< set with MakeCurrent */
3078    GLframebuffer *WinSysReadBuffer;  /**< set with MakeCurrent */
3079
3080    /**
3081     * Device driver function pointer table
3082     */
3083    struct dd_function_table Driver;
3084
3085    void *DriverCtx;     /**< Points to device driver context/state */
3086
3087    /** Core/Driver constants */
3088    struct gl_constants Const;
3089
3090    /** \name The various 4x4 matrix stacks */
3091    /*@{*/
3092    struct gl_matrix_stack ModelviewMatrixStack;
3093    struct gl_matrix_stack ProjectionMatrixStack;
3094    struct gl_matrix_stack ColorMatrixStack;
3095    struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
3096    struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
3097    struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
3098    /*@}*/
3099
3100    /** Combined modelview and projection matrix */
3101    GLmatrix _ModelProjectMatrix;
3102
3103    /** \name Display lists */
3104    struct gl_dlist_state ListState;
3105
3106    GLboolean ExecuteFlag;       /**< Execute GL commands? */
3107    GLboolean CompileFlag;       /**< Compile GL commands into display list? */
3108
3109    /** Extension information */
3110    struct gl_extensions Extensions;
3111
3112    /** Version info */
3113    GLuint VersionMajor, VersionMinor;
3114    char *VersionString;
3115
3116    /** \name State attribute stack (for glPush/PopAttrib) */
3117    /*@{*/
3118    GLuint AttribStackDepth;
3119    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
3120    /*@}*/
3121
3122    /** \name Renderer attribute groups
3123     *
3124     * We define a struct for each attribute group to make pushing and popping
3125     * attributes easy.  Also it's a good organization.
3126     */
3127    /*@{*/
3128    struct gl_accum_attrib       Accum;          /**< Accum buffer attributes */
3129    struct gl_colorbuffer_attrib Color;          /**< Color buffer attributes */
3130    struct gl_current_attrib     Current;        /**< Current attributes */
3131    struct gl_depthbuffer_attrib Depth;          /**< Depth buffer attributes */
3132    struct gl_eval_attrib        Eval;           /**< Eval attributes */
3133    struct gl_fog_attrib         Fog;            /**< Fog attributes */
3134    struct gl_hint_attrib        Hint;           /**< Hint attributes */
3135    struct gl_light_attrib       Light;          /**< Light attributes */
3136    struct gl_line_attrib        Line;           /**< Line attributes */
3137    struct gl_list_attrib        List;           /**< List attributes */
3138    struct gl_multisample_attrib Multisample;
3139    struct gl_pixel_attrib       Pixel;          /**< Pixel attributes */
3140    struct gl_point_attrib       Point;          /**< Point attributes */
3141    struct gl_polygon_attrib     Polygon;        /**< Polygon attributes */
3142    GLuint PolygonStipple[32];                   /**< Polygon stipple */
3143    struct gl_scissor_attrib     Scissor;        /**< Scissor attributes */
3144    struct gl_stencil_attrib     Stencil;        /**< Stencil buffer attributes */
3145    struct gl_texture_attrib     Texture;        /**< Texture attributes */
3146    struct gl_transform_attrib   Transform;      /**< Transformation attributes */
3147    struct gl_viewport_attrib    Viewport;       /**< Viewport attributes */
3148    /*@}*/
3149
3150    /** \name Client attribute stack */
3151    /*@{*/
3152    GLuint ClientAttribStackDepth;
3153    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
3154    /*@}*/
3155
3156    /** \name Client attribute groups */
3157    /*@{*/
3158    struct gl_array_attrib       Array;  /**< Vertex arrays */
3159    struct gl_pixelstore_attrib  Pack;   /**< Pixel packing */
3160    struct gl_pixelstore_attrib  Unpack; /**< Pixel unpacking */
3161    struct gl_pixelstore_attrib  DefaultPacking; /**< Default params */
3162    /*@}*/
3163
3164    /** \name Other assorted state (not pushed/popped on attribute stack) */
3165    /*@{*/
3166    struct gl_pixelmaps          PixelMaps;
3167    struct gl_histogram_attrib   Histogram;
3168    struct gl_minmax_attrib      MinMax;
3169    struct gl_convolution_attrib Convolution1D;
3170    struct gl_convolution_attrib Convolution2D;
3171    struct gl_convolution_attrib Separable2D;
3172
3173    struct gl_evaluators EvalMap;   /**< All evaluators */
3174    struct gl_feedback   Feedback;  /**< Feedback */
3175    struct gl_selection  Select;    /**< Selection */
3176
3177    struct gl_color_table ColorTable[COLORTABLE_MAX];
3178    struct gl_color_table ProxyColorTable[COLORTABLE_MAX];
3179
3180    struct gl_program_state Program;  /**< general program state */
3181    struct gl_vertex_program_state VertexProgram;
3182    struct gl_fragment_program_state FragmentProgram;
3183    struct gl_geometry_program_state GeometryProgram;
3184    struct gl_ati_fragment_shader_state ATIFragmentShader;
3185
3186    struct gl_shader_state Shader; /**< GLSL shader object state */
3187
3188    struct gl_query_state Query;  /**< occlusion, timer queries */
3189
3190    struct gl_transform_feedback TransformFeedback;
3191
3192    struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
3193    struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
3194    /*@}*/
3195
3196    struct gl_meta_state *Meta;  /**< for "meta" operations */
3197
3198 #if FEATURE_EXT_framebuffer_object
3199    struct gl_renderbuffer *CurrentRenderbuffer;
3200 #endif
3201
3202    GLenum ErrorValue;        /**< Last error code */
3203
3204    /**
3205     * Recognize and silence repeated error debug messages in buggy apps.
3206     */
3207    const char *ErrorDebugFmtString;
3208    GLuint ErrorDebugCount;
3209
3210    GLenum RenderMode;        /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3211    GLbitfield NewState;      /**< bitwise-or of _NEW_* flags */
3212
3213    GLboolean ViewportInitialized;  /**< has viewport size been initialized? */
3214
3215    GLbitfield varying_vp_inputs;  /**< mask of VERT_BIT_* flags */
3216
3217    /** \name Derived state */
3218    /*@{*/
3219    /** Bitwise-or of DD_* flags.  Note that this bitfield may be used before
3220     * state validation so they need to always be current.
3221     */
3222    GLbitfield _TriangleCaps;
3223    GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
3224    GLfloat _EyeZDir[3];
3225    GLfloat _ModelViewInvScale;
3226    GLboolean _NeedEyeCoords;
3227    GLboolean _ForceEyeCoords;
3228
3229    GLuint TextureStateTimestamp; /**< detect changes to shared state */
3230
3231    struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
3232    struct gl_shine_tab *_ShineTabList;  /**< MRU list of inactive shine tables */
3233    /**@}*/
3234
3235    struct gl_list_extensions *ListExt; /**< driver dlist extensions */
3236
3237    /** \name For debugging/development only */
3238    /*@{*/
3239    GLboolean FirstTimeCurrent;
3240    /*@}*/
3241
3242    /** Dither disable via MESA_NO_DITHER env var */
3243    GLboolean NoDither;
3244
3245    /** software compression/decompression supported or not */
3246    GLboolean Mesa_DXTn;
3247
3248    /**
3249     * Use dp4 (rather than mul/mad) instructions for position
3250     * transformation?
3251     */
3252    GLboolean mvp_with_dp4;
3253
3254    /** Core tnl module support */
3255    struct gl_tnl_module TnlModule;
3256
3257    /**
3258     * \name Hooks for module contexts.
3259     *
3260     * These will eventually live in the driver or elsewhere.
3261     */
3262    /*@{*/
3263    void *swrast_context;
3264    void *swsetup_context;
3265    void *swtnl_context;
3266    void *swtnl_im;
3267    struct st_context *st;
3268    void *aelt_context;
3269    /*@}*/
3270 };
3271
3272
3273 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3274 extern const char *_mesa_prim_name[GL_POLYGON+4];
3275
3276
3277 #ifdef DEBUG
3278 extern int MESA_VERBOSE;
3279 extern int MESA_DEBUG_FLAGS;
3280 # define MESA_FUNCTION __FUNCTION__
3281 #else
3282 # define MESA_VERBOSE 0
3283 # define MESA_DEBUG_FLAGS 0
3284 # define MESA_FUNCTION "a function"
3285 # ifndef NDEBUG
3286 #  define NDEBUG
3287 # endif
3288 #endif
3289
3290
3291 /** The MESA_VERBOSE var is a bitmask of these flags */
3292 enum _verbose
3293 {
3294    VERBOSE_VARRAY               = 0x0001,
3295    VERBOSE_TEXTURE              = 0x0002,
3296    VERBOSE_MATERIAL             = 0x0004,
3297    VERBOSE_PIPELINE             = 0x0008,
3298    VERBOSE_DRIVER               = 0x0010,
3299    VERBOSE_STATE                = 0x0020,
3300    VERBOSE_API                  = 0x0040,
3301    VERBOSE_DISPLAY_LIST         = 0x0100,
3302    VERBOSE_LIGHTING             = 0x0200,
3303    VERBOSE_PRIMS                = 0x0400,
3304    VERBOSE_VERTS                = 0x0800,
3305    VERBOSE_DISASSEM             = 0x1000,
3306    VERBOSE_DRAW                 = 0x2000,
3307    VERBOSE_SWAPBUFFERS          = 0x4000
3308 };
3309
3310
3311 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3312 enum _debug
3313 {
3314    DEBUG_ALWAYS_FLUSH           = 0x1
3315 };
3316
3317
3318
3319 #endif /* MTYPES_H */