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/mfeatures.h"
  40 #include "glapi/glapi.h"
  41 #include "math/m_matrix.h"      /* GLmatrix */
  42 #include "main/simple_list.h"   /* struct simple_node */
  43 #include "main/formats.h"       /* MESA_FORMAT_COUNT */
  44
  45
  46 /**
  47  * Stencil buffer data type.
  48  */
  49 #if STENCIL_BITS==8
  50    typedef GLubyte GLstencil;
  51 #elif STENCIL_BITS==16
  52    typedef GLushort GLstencil;
  53 #else
  54 #  error "illegal number of stencil bits"
  55 #endif
  56
  57
  58 /**
  59  * \name 64-bit extension of GLbitfield.
  60  */
  61 /*@{*/
  62 typedef GLuint64 GLbitfield64;
  63
  64 /** Set a single bit */
  65 #define BITFIELD64_BIT(b)      ((GLbitfield64)1 << (b))
  66
  67
  68 /**
  69  * \name Some forward type declarations
  70  */
  71 /*@{*/
  72 struct _mesa_HashTable;
  73 struct gl_attrib_node;
  74 struct gl_list_extensions;
  75 struct gl_meta_state;
  76 struct gl_program_cache;
  77 struct gl_texture_object;
  78 struct gl_context;
  79 struct st_context;
  80 /*@}*/
  81
  82
  83 /** Extra draw modes beyond GL_POINTS, GL_TRIANGLE_FAN, etc */
  84 #define PRIM_OUTSIDE_BEGIN_END   (GL_POLYGON+1)
  85 #define PRIM_INSIDE_UNKNOWN_PRIM (GL_POLYGON+2)
  86 #define PRIM_UNKNOWN             (GL_POLYGON+3)
  87
  88
  89 /**
  90  * Shader stages. Note that these will become 5 with tessellation.
  91  * These MUST have the same values as gallium's PIPE_SHADER_*
  92  */
  93 typedef enum
  94 {
  95    MESA_SHADER_VERTEX = 0,
  96    MESA_SHADER_FRAGMENT = 1,
  97    MESA_SHADER_GEOMETRY = 2,
  98    MESA_SHADER_TYPES = 3
  99 } gl_shader_type;
 100
 101
 102
 103 /**
 104  * Indexes for vertex program attributes.
 105  * GL_NV_vertex_program aliases generic attributes over the conventional
 106  * attributes.  In GL_ARB_vertex_program shader the aliasing is optional.
 107  * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
 108  * generic attributes are distinct/separate).
 109  */
 110 typedef enum
 111 {
 112    VERT_ATTRIB_POS = 0,
 113    VERT_ATTRIB_WEIGHT = 1,
 114    VERT_ATTRIB_NORMAL = 2,
 115    VERT_ATTRIB_COLOR0 = 3,
 116    VERT_ATTRIB_COLOR1 = 4,
 117    VERT_ATTRIB_FOG = 5,
 118    VERT_ATTRIB_COLOR_INDEX = 6,
 119    VERT_ATTRIB_POINT_SIZE = 6,  /*alias*/
 120    VERT_ATTRIB_EDGEFLAG = 7,
 121    VERT_ATTRIB_TEX0 = 8,
 122    VERT_ATTRIB_TEX1 = 9,
 123    VERT_ATTRIB_TEX2 = 10,
 124    VERT_ATTRIB_TEX3 = 11,
 125    VERT_ATTRIB_TEX4 = 12,
 126    VERT_ATTRIB_TEX5 = 13,
 127    VERT_ATTRIB_TEX6 = 14,
 128    VERT_ATTRIB_TEX7 = 15,
 129    VERT_ATTRIB_GENERIC0 = 16,
 130    VERT_ATTRIB_GENERIC1 = 17,
 131    VERT_ATTRIB_GENERIC2 = 18,
 132    VERT_ATTRIB_GENERIC3 = 19,
 133    VERT_ATTRIB_GENERIC4 = 20,
 134    VERT_ATTRIB_GENERIC5 = 21,
 135    VERT_ATTRIB_GENERIC6 = 22,
 136    VERT_ATTRIB_GENERIC7 = 23,
 137    VERT_ATTRIB_GENERIC8 = 24,
 138    VERT_ATTRIB_GENERIC9 = 25,
 139    VERT_ATTRIB_GENERIC10 = 26,
 140    VERT_ATTRIB_GENERIC11 = 27,
 141    VERT_ATTRIB_GENERIC12 = 28,
 142    VERT_ATTRIB_GENERIC13 = 29,
 143    VERT_ATTRIB_GENERIC14 = 30,
 144    VERT_ATTRIB_GENERIC15 = 31,
 145    VERT_ATTRIB_MAX = 32
 146 } gl_vert_attrib;
 147
 148 /**
 149  * Bitflags for vertex attributes.
 150  * These are used in bitfields in many places.
 151  */
 152 /*@{*/
 153 #define VERT_BIT_POS         (1 << VERT_ATTRIB_POS)
 154 #define VERT_BIT_WEIGHT      (1 << VERT_ATTRIB_WEIGHT)
 155 #define VERT_BIT_NORMAL      (1 << VERT_ATTRIB_NORMAL)
 156 #define VERT_BIT_COLOR0      (1 << VERT_ATTRIB_COLOR0)
 157 #define VERT_BIT_COLOR1      (1 << VERT_ATTRIB_COLOR1)
 158 #define VERT_BIT_FOG         (1 << VERT_ATTRIB_FOG)
 159 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
 160 #define VERT_BIT_EDGEFLAG    (1 << VERT_ATTRIB_EDGEFLAG)
 161 #define VERT_BIT_TEX0        (1 << VERT_ATTRIB_TEX0)
 162 #define VERT_BIT_TEX1        (1 << VERT_ATTRIB_TEX1)
 163 #define VERT_BIT_TEX2        (1 << VERT_ATTRIB_TEX2)
 164 #define VERT_BIT_TEX3        (1 << VERT_ATTRIB_TEX3)
 165 #define VERT_BIT_TEX4        (1 << VERT_ATTRIB_TEX4)
 166 #define VERT_BIT_TEX5        (1 << VERT_ATTRIB_TEX5)
 167 #define VERT_BIT_TEX6        (1 << VERT_ATTRIB_TEX6)
 168 #define VERT_BIT_TEX7        (1 << VERT_ATTRIB_TEX7)
 169 #define VERT_BIT_GENERIC0    (1 << VERT_ATTRIB_GENERIC0)
 170 #define VERT_BIT_GENERIC1    (1 << VERT_ATTRIB_GENERIC1)
 171 #define VERT_BIT_GENERIC2    (1 << VERT_ATTRIB_GENERIC2)
 172 #define VERT_BIT_GENERIC3    (1 << VERT_ATTRIB_GENERIC3)
 173 #define VERT_BIT_GENERIC4    (1 << VERT_ATTRIB_GENERIC4)
 174 #define VERT_BIT_GENERIC5    (1 << VERT_ATTRIB_GENERIC5)
 175 #define VERT_BIT_GENERIC6    (1 << VERT_ATTRIB_GENERIC6)
 176 #define VERT_BIT_GENERIC7    (1 << VERT_ATTRIB_GENERIC7)
 177 #define VERT_BIT_GENERIC8    (1 << VERT_ATTRIB_GENERIC8)
 178 #define VERT_BIT_GENERIC9    (1 << VERT_ATTRIB_GENERIC9)
 179 #define VERT_BIT_GENERIC10   (1 << VERT_ATTRIB_GENERIC10)
 180 #define VERT_BIT_GENERIC11   (1 << VERT_ATTRIB_GENERIC11)
 181 #define VERT_BIT_GENERIC12   (1 << VERT_ATTRIB_GENERIC12)
 182 #define VERT_BIT_GENERIC13   (1 << VERT_ATTRIB_GENERIC13)
 183 #define VERT_BIT_GENERIC14   (1 << VERT_ATTRIB_GENERIC14)
 184 #define VERT_BIT_GENERIC15   (1 << VERT_ATTRIB_GENERIC15)
 185
 186 #define VERT_BIT_TEX(u)  (1 << (VERT_ATTRIB_TEX0 + (u)))
 187 #define VERT_BIT_GENERIC(g)  (1 << (VERT_ATTRIB_GENERIC0 + (g)))
 188 /*@}*/
 189
 190
 191 /**
 192  * Indexes for vertex program result attributes.  Note that
 193  * _mesa_vert_result_to_frag_attrib() and _mesa_frag_attrib_to_vert_result() make
 194  * assumptions about the layout of this enum.
 195  */
 196 typedef enum
 197 {
 198    VERT_RESULT_HPOS = 0,
 199    VERT_RESULT_COL0 = 1,
 200    VERT_RESULT_COL1 = 2,
 201    VERT_RESULT_FOGC = 3,
 202    VERT_RESULT_TEX0 = 4,
 203    VERT_RESULT_TEX1 = 5,
 204    VERT_RESULT_TEX2 = 6,
 205    VERT_RESULT_TEX3 = 7,
 206    VERT_RESULT_TEX4 = 8,
 207    VERT_RESULT_TEX5 = 9,
 208    VERT_RESULT_TEX6 = 10,
 209    VERT_RESULT_TEX7 = 11,
 210    VERT_RESULT_PSIZ = 12,
 211    VERT_RESULT_BFC0 = 13,
 212    VERT_RESULT_BFC1 = 14,
 213    VERT_RESULT_EDGE = 15,
 214    VERT_RESULT_CLIP_VERTEX = 16,
 215    VERT_RESULT_CLIP_DIST0 = 17,
 216    VERT_RESULT_CLIP_DIST1 = 18,
 217    VERT_RESULT_VAR0 = 19,  /**< shader varying */
 218    VERT_RESULT_MAX = (VERT_RESULT_VAR0 + MAX_VARYING)
 219 } gl_vert_result;
 220
 221
 222 /*********************************************/
 223
 224 /**
 225  * Indexes for geometry program attributes.
 226  */
 227 typedef enum
 228 {
 229    GEOM_ATTRIB_POSITION = 0,
 230    GEOM_ATTRIB_COLOR0 = 1,
 231    GEOM_ATTRIB_COLOR1 = 2,
 232    GEOM_ATTRIB_SECONDARY_COLOR0 = 3,
 233    GEOM_ATTRIB_SECONDARY_COLOR1 = 4,
 234    GEOM_ATTRIB_FOG_FRAG_COORD = 5,
 235    GEOM_ATTRIB_POINT_SIZE = 6,
 236    GEOM_ATTRIB_CLIP_VERTEX = 7,
 237    GEOM_ATTRIB_PRIMITIVE_ID = 8,
 238    GEOM_ATTRIB_TEX_COORD = 9,
 239
 240    GEOM_ATTRIB_VAR0 = 16,
 241    GEOM_ATTRIB_MAX = (GEOM_ATTRIB_VAR0 + MAX_VARYING)
 242 } gl_geom_attrib;
 243
 244 /**
 245  * Bitflags for geometry attributes.
 246  * These are used in bitfields in many places.
 247  */
 248 /*@{*/
 249 #define GEOM_BIT_COLOR0      (1 << GEOM_ATTRIB_COLOR0)
 250 #define GEOM_BIT_COLOR1      (1 << GEOM_ATTRIB_COLOR1)
 251 #define GEOM_BIT_SCOLOR0     (1 << GEOM_ATTRIB_SECONDARY_COLOR0)
 252 #define GEOM_BIT_SCOLOR1     (1 << GEOM_ATTRIB_SECONDARY_COLOR1)
 253 #define GEOM_BIT_TEX_COORD   (1 << GEOM_ATTRIB_TEX_COORD)
 254 #define GEOM_BIT_FOG_COORD   (1 << GEOM_ATTRIB_FOG_FRAG_COORD)
 255 #define GEOM_BIT_POSITION    (1 << GEOM_ATTRIB_POSITION)
 256 #define GEOM_BIT_POINT_SIDE  (1 << GEOM_ATTRIB_POINT_SIZE)
 257 #define GEOM_BIT_CLIP_VERTEX (1 << GEOM_ATTRIB_CLIP_VERTEX)
 258 #define GEOM_BIT_PRIM_ID     (1 << GEOM_ATTRIB_PRIMITIVE_ID)
 259 #define GEOM_BIT_VAR0        (1 << GEOM_ATTRIB_VAR0)
 260
 261 #define GEOM_BIT_VAR(g)  (1 << (GEOM_BIT_VAR0 + (g)))
 262 /*@}*/
 263
 264
 265 /**
 266  * Indexes for geometry program result attributes
 267  */
 268 typedef enum
 269 {
 270    GEOM_RESULT_POS  = 0,
 271    GEOM_RESULT_COL0  = 1,
 272    GEOM_RESULT_COL1  = 2,
 273    GEOM_RESULT_SCOL0 = 3,
 274    GEOM_RESULT_SCOL1 = 4,
 275    GEOM_RESULT_FOGC = 5,
 276    GEOM_RESULT_TEX0 = 6,
 277    GEOM_RESULT_TEX1 = 7,
 278    GEOM_RESULT_TEX2 = 8,
 279    GEOM_RESULT_TEX3 = 9,
 280    GEOM_RESULT_TEX4 = 10,
 281    GEOM_RESULT_TEX5 = 11,
 282    GEOM_RESULT_TEX6 = 12,
 283    GEOM_RESULT_TEX7 = 13,
 284    GEOM_RESULT_PSIZ = 14,
 285    GEOM_RESULT_CLPV = 15,
 286    GEOM_RESULT_PRID = 16,
 287    GEOM_RESULT_LAYR = 17,
 288    GEOM_RESULT_VAR0 = 18,  /**< shader varying, should really be 16 */
 289    /* ### we need to -2 because var0 is 18 instead 16 like in the others */
 290    GEOM_RESULT_MAX  =  (GEOM_RESULT_VAR0 + MAX_VARYING - 2)
 291 } gl_geom_result;
 292
 293
 294 /**
 295  * Indexes for fragment program input attributes.  Note that
 296  * _mesa_vert_result_to_frag_attrib() and frag_attrib_to_vert_result() make
 297  * assumptions about the layout of this enum.
 298  */
 299 typedef enum
 300 {
 301    FRAG_ATTRIB_WPOS = 0,
 302    FRAG_ATTRIB_COL0 = 1,
 303    FRAG_ATTRIB_COL1 = 2,
 304    FRAG_ATTRIB_FOGC = 3,
 305    FRAG_ATTRIB_TEX0 = 4,
 306    FRAG_ATTRIB_TEX1 = 5,
 307    FRAG_ATTRIB_TEX2 = 6,
 308    FRAG_ATTRIB_TEX3 = 7,
 309    FRAG_ATTRIB_TEX4 = 8,
 310    FRAG_ATTRIB_TEX5 = 9,
 311    FRAG_ATTRIB_TEX6 = 10,
 312    FRAG_ATTRIB_TEX7 = 11,
 313    FRAG_ATTRIB_FACE = 12,  /**< front/back face */
 314    FRAG_ATTRIB_PNTC = 13,  /**< sprite/point coord */
 315    FRAG_ATTRIB_CLIP_DIST0 = 14,
 316    FRAG_ATTRIB_CLIP_DIST1 = 15,
 317    FRAG_ATTRIB_VAR0 = 16,  /**< shader varying */
 318    FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
 319 } gl_frag_attrib;
 320
 321
 322 /**
 323  * Convert from a gl_vert_result value to the corresponding gl_frag_attrib.
 324  *
 325  * VERT_RESULT_HPOS is converted to FRAG_ATTRIB_WPOS.
 326  *
 327  * gl_vert_result values which have no corresponding gl_frag_attrib
 328  * (VERT_RESULT_PSIZ, VERT_RESULT_BFC0, VERT_RESULT_BFC1, and
 329  * VERT_RESULT_EDGE) are converted to a value of -1.
 330  */
 331 static inline int
 332 _mesa_vert_result_to_frag_attrib(gl_vert_result vert_result)
 333 {
 334    if (vert_result >= VERT_RESULT_CLIP_DIST0)
 335       return vert_result - VERT_RESULT_CLIP_DIST0 + FRAG_ATTRIB_CLIP_DIST0;
 336    else if (vert_result <= VERT_RESULT_TEX7)
 337       return vert_result;
 338    else
 339       return -1;
 340 }
 341
 342
 343 /**
 344  * Convert from a gl_frag_attrib value to the corresponding gl_vert_result.
 345  *
 346  * FRAG_ATTRIB_WPOS is converted to VERT_RESULT_HPOS.
 347  *
 348  * gl_frag_attrib values which have no corresponding gl_vert_result
 349  * (FRAG_ATTRIB_FACE and FRAG_ATTRIB_PNTC) are converted to a value of -1.
 350  */
 351 static inline int
 352 _mesa_frag_attrib_to_vert_result(gl_frag_attrib frag_attrib)
 353 {
 354    if (frag_attrib <= FRAG_ATTRIB_TEX7)
 355       return frag_attrib;
 356    else if (frag_attrib >= FRAG_ATTRIB_CLIP_DIST0)
 357       return frag_attrib - FRAG_ATTRIB_CLIP_DIST0 + VERT_RESULT_CLIP_DIST0;
 358    else
 359       return -1;
 360 }
 361
 362
 363 /**
 364  * Bitflags for fragment program input attributes.
 365  */
 366 /*@{*/
 367 #define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
 368 #define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
 369 #define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
 370 #define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
 371 #define FRAG_BIT_FACE  (1 << FRAG_ATTRIB_FACE)
 372 #define FRAG_BIT_PNTC  (1 << FRAG_ATTRIB_PNTC)
 373 #define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
 374 #define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
 375 #define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
 376 #define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
 377 #define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
 378 #define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
 379 #define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
 380 #define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
 381 #define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
 382
 383 #define FRAG_BIT_TEX(U)  (FRAG_BIT_TEX0 << (U))
 384 #define FRAG_BIT_VAR(V)  (FRAG_BIT_VAR0 << (V))
 385
 386 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|       \
 387                            FRAG_BIT_TEX1|       \
 388                            FRAG_BIT_TEX2|       \
 389                            FRAG_BIT_TEX3|       \
 390                            FRAG_BIT_TEX4|       \
 391                            FRAG_BIT_TEX5|       \
 392                            FRAG_BIT_TEX6|       \
 393                            FRAG_BIT_TEX7)
 394 /*@}*/
 395
 396
 397 /**
 398  * Fragment program results
 399  */
 400 typedef enum
 401 {
 402    FRAG_RESULT_DEPTH = 0,
 403    FRAG_RESULT_STENCIL = 1,
 404    /* If a single color should be written to all render targets, this
 405     * register is written.  No FRAG_RESULT_DATAn will be written.
 406     */
 407    FRAG_RESULT_COLOR = 2,
 408
 409    /* FRAG_RESULT_DATAn are the per-render-target (GLSL gl_FragData[n]
 410     * or ARB_fragment_program fragment.color[n]) color results.  If
 411     * any are written, FRAG_RESULT_COLOR will not be written.
 412     */
 413    FRAG_RESULT_DATA0 = 3,
 414    FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
 415 } gl_frag_result;
 416
 417
 418 /**
 419  * Indexes for all renderbuffers
 420  */
 421 typedef enum
 422 {
 423    /* the four standard color buffers */
 424    BUFFER_FRONT_LEFT,
 425    BUFFER_BACK_LEFT,
 426    BUFFER_FRONT_RIGHT,
 427    BUFFER_BACK_RIGHT,
 428    BUFFER_DEPTH,
 429    BUFFER_STENCIL,
 430    BUFFER_ACCUM,
 431    /* optional aux buffer */
 432    BUFFER_AUX0,
 433    /* generic renderbuffers */
 434    BUFFER_COLOR0,
 435    BUFFER_COLOR1,
 436    BUFFER_COLOR2,
 437    BUFFER_COLOR3,
 438    BUFFER_COLOR4,
 439    BUFFER_COLOR5,
 440    BUFFER_COLOR6,
 441    BUFFER_COLOR7,
 442    BUFFER_COUNT
 443 } gl_buffer_index;
 444
 445 /**
 446  * Bit flags for all renderbuffers
 447  */
 448 #define BUFFER_BIT_FRONT_LEFT   (1 << BUFFER_FRONT_LEFT)
 449 #define BUFFER_BIT_BACK_LEFT    (1 << BUFFER_BACK_LEFT)
 450 #define BUFFER_BIT_FRONT_RIGHT  (1 << BUFFER_FRONT_RIGHT)
 451 #define BUFFER_BIT_BACK_RIGHT   (1 << BUFFER_BACK_RIGHT)
 452 #define BUFFER_BIT_AUX0         (1 << BUFFER_AUX0)
 453 #define BUFFER_BIT_AUX1         (1 << BUFFER_AUX1)
 454 #define BUFFER_BIT_AUX2         (1 << BUFFER_AUX2)
 455 #define BUFFER_BIT_AUX3         (1 << BUFFER_AUX3)
 456 #define BUFFER_BIT_DEPTH        (1 << BUFFER_DEPTH)
 457 #define BUFFER_BIT_STENCIL      (1 << BUFFER_STENCIL)
 458 #define BUFFER_BIT_ACCUM        (1 << BUFFER_ACCUM)
 459 #define BUFFER_BIT_COLOR0       (1 << BUFFER_COLOR0)
 460 #define BUFFER_BIT_COLOR1       (1 << BUFFER_COLOR1)
 461 #define BUFFER_BIT_COLOR2       (1 << BUFFER_COLOR2)
 462 #define BUFFER_BIT_COLOR3       (1 << BUFFER_COLOR3)
 463 #define BUFFER_BIT_COLOR4       (1 << BUFFER_COLOR4)
 464 #define BUFFER_BIT_COLOR5       (1 << BUFFER_COLOR5)
 465 #define BUFFER_BIT_COLOR6       (1 << BUFFER_COLOR6)
 466 #define BUFFER_BIT_COLOR7       (1 << BUFFER_COLOR7)
 467
 468 /**
 469  * Mask of all the color buffer bits (but not accum).
 470  */
 471 #define BUFFER_BITS_COLOR  (BUFFER_BIT_FRONT_LEFT | \
 472                             BUFFER_BIT_BACK_LEFT | \
 473                             BUFFER_BIT_FRONT_RIGHT | \
 474                             BUFFER_BIT_BACK_RIGHT | \
 475                             BUFFER_BIT_AUX0 | \
 476                             BUFFER_BIT_COLOR0 | \
 477                             BUFFER_BIT_COLOR1 | \
 478                             BUFFER_BIT_COLOR2 | \
 479                             BUFFER_BIT_COLOR3 | \
 480                             BUFFER_BIT_COLOR4 | \
 481                             BUFFER_BIT_COLOR5 | \
 482                             BUFFER_BIT_COLOR6 | \
 483                             BUFFER_BIT_COLOR7)
 484
 485
 486 /**
 487  * Framebuffer configuration (aka visual / pixelformat)
 488  * Note: some of these fields should be boolean, but it appears that
 489  * code in drivers/dri/common/util.c requires int-sized fields.
 490  */
 491 struct gl_config
 492 {
 493    GLboolean rgbMode;
 494    GLboolean floatMode;
 495    GLboolean colorIndexMode;  /* XXX is this used anywhere? */
 496    GLuint doubleBufferMode;
 497    GLuint stereoMode;
 498
 499    GLboolean haveAccumBuffer;
 500    GLboolean haveDepthBuffer;
 501    GLboolean haveStencilBuffer;
 502
 503    GLint redBits, greenBits, blueBits, alphaBits;       /* bits per comp */
 504    GLuint redMask, greenMask, blueMask, alphaMask;
 505    GLint rgbBits;               /* total bits for rgb */
 506    GLint indexBits;             /* total bits for colorindex */
 507
 508    GLint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
 509    GLint depthBits;
 510    GLint stencilBits;
 511
 512    GLint numAuxBuffers;
 513
 514    GLint level;
 515
 516    /* EXT_visual_rating / GLX 1.2 */
 517    GLint visualRating;
 518
 519    /* EXT_visual_info / GLX 1.2 */
 520    GLint transparentPixel;
 521    /*    colors are floats scaled to ints */
 522    GLint transparentRed, transparentGreen, transparentBlue, transparentAlpha;
 523    GLint transparentIndex;
 524
 525    /* ARB_multisample / SGIS_multisample */
 526    GLint sampleBuffers;
 527    GLint samples;
 528
 529    /* SGIX_pbuffer / GLX 1.3 */
 530    GLint maxPbufferWidth;
 531    GLint maxPbufferHeight;
 532    GLint maxPbufferPixels;
 533    GLint optimalPbufferWidth;   /* Only for SGIX_pbuffer. */
 534    GLint optimalPbufferHeight;  /* Only for SGIX_pbuffer. */
 535
 536    /* OML_swap_method */
 537    GLint swapMethod;
 538
 539    /* EXT_texture_from_pixmap */
 540    GLint bindToTextureRgb;
 541    GLint bindToTextureRgba;
 542    GLint bindToMipmapTexture;
 543    GLint bindToTextureTargets;
 544    GLint yInverted;
 545
 546    /* EXT_framebuffer_sRGB */
 547    GLint sRGBCapable;
 548 };
 549
 550
 551 /**
 552  * \name Bit flags used for updating material values.
 553  */
 554 /*@{*/
 555 #define MAT_ATTRIB_FRONT_AMBIENT           0
 556 #define MAT_ATTRIB_BACK_AMBIENT            1
 557 #define MAT_ATTRIB_FRONT_DIFFUSE           2
 558 #define MAT_ATTRIB_BACK_DIFFUSE            3
 559 #define MAT_ATTRIB_FRONT_SPECULAR          4
 560 #define MAT_ATTRIB_BACK_SPECULAR           5
 561 #define MAT_ATTRIB_FRONT_EMISSION          6
 562 #define MAT_ATTRIB_BACK_EMISSION           7
 563 #define MAT_ATTRIB_FRONT_SHININESS         8
 564 #define MAT_ATTRIB_BACK_SHININESS          9
 565 #define MAT_ATTRIB_FRONT_INDEXES           10
 566 #define MAT_ATTRIB_BACK_INDEXES            11
 567 #define MAT_ATTRIB_MAX                     12
 568
 569 #define MAT_ATTRIB_AMBIENT(f)  (MAT_ATTRIB_FRONT_AMBIENT+(f))
 570 #define MAT_ATTRIB_DIFFUSE(f)  (MAT_ATTRIB_FRONT_DIFFUSE+(f))
 571 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
 572 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
 573 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
 574 #define MAT_ATTRIB_INDEXES(f)  (MAT_ATTRIB_FRONT_INDEXES+(f))
 575
 576 #define MAT_INDEX_AMBIENT  0
 577 #define MAT_INDEX_DIFFUSE  1
 578 #define MAT_INDEX_SPECULAR 2
 579
 580 #define MAT_BIT_FRONT_AMBIENT         (1<<MAT_ATTRIB_FRONT_AMBIENT)
 581 #define MAT_BIT_BACK_AMBIENT          (1<<MAT_ATTRIB_BACK_AMBIENT)
 582 #define MAT_BIT_FRONT_DIFFUSE         (1<<MAT_ATTRIB_FRONT_DIFFUSE)
 583 #define MAT_BIT_BACK_DIFFUSE          (1<<MAT_ATTRIB_BACK_DIFFUSE)
 584 #define MAT_BIT_FRONT_SPECULAR        (1<<MAT_ATTRIB_FRONT_SPECULAR)
 585 #define MAT_BIT_BACK_SPECULAR         (1<<MAT_ATTRIB_BACK_SPECULAR)
 586 #define MAT_BIT_FRONT_EMISSION        (1<<MAT_ATTRIB_FRONT_EMISSION)
 587 #define MAT_BIT_BACK_EMISSION         (1<<MAT_ATTRIB_BACK_EMISSION)
 588 #define MAT_BIT_FRONT_SHININESS       (1<<MAT_ATTRIB_FRONT_SHININESS)
 589 #define MAT_BIT_BACK_SHININESS        (1<<MAT_ATTRIB_BACK_SHININESS)
 590 #define MAT_BIT_FRONT_INDEXES         (1<<MAT_ATTRIB_FRONT_INDEXES)
 591 #define MAT_BIT_BACK_INDEXES          (1<<MAT_ATTRIB_BACK_INDEXES)
 592
 593
 594 #define FRONT_MATERIAL_BITS     (MAT_BIT_FRONT_EMISSION |       \
 595                                  MAT_BIT_FRONT_AMBIENT |        \
 596                                  MAT_BIT_FRONT_DIFFUSE |        \
 597                                  MAT_BIT_FRONT_SPECULAR |       \
 598                                  MAT_BIT_FRONT_SHININESS |      \
 599                                  MAT_BIT_FRONT_INDEXES)
 600
 601 #define BACK_MATERIAL_BITS      (MAT_BIT_BACK_EMISSION |        \
 602                                  MAT_BIT_BACK_AMBIENT |         \
 603                                  MAT_BIT_BACK_DIFFUSE |         \
 604                                  MAT_BIT_BACK_SPECULAR |        \
 605                                  MAT_BIT_BACK_SHININESS |       \
 606                                  MAT_BIT_BACK_INDEXES)
 607
 608 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 609 /*@}*/
 610
 611
 612 #define EXP_TABLE_SIZE 512      /**< Specular exponent lookup table sizes */
 613 #define SHINE_TABLE_SIZE 256    /**< Material shininess lookup table sizes */
 614
 615 /**
 616  * Material shininess lookup table.
 617  */
 618 struct gl_shine_tab
 619 {
 620    struct gl_shine_tab *next, *prev;
 621    GLfloat tab[SHINE_TABLE_SIZE+1];
 622    GLfloat shininess;
 623    GLuint refcount;
 624 };
 625
 626
 627 /**
 628  * Light source state.
 629  */
 630 struct gl_light
 631 {
 632    struct gl_light *next;       /**< double linked list with sentinel */
 633    struct gl_light *prev;
 634
 635    GLfloat Ambient[4];          /**< ambient color */
 636    GLfloat Diffuse[4];          /**< diffuse color */
 637    GLfloat Specular[4];         /**< specular color */
 638    GLfloat EyePosition[4];      /**< position in eye coordinates */
 639    GLfloat SpotDirection[4];    /**< spotlight direction in eye coordinates */
 640    GLfloat SpotExponent;
 641    GLfloat SpotCutoff;          /**< in degrees */
 642    GLfloat _CosCutoffNeg;       /**< = cos(SpotCutoff) */
 643    GLfloat _CosCutoff;          /**< = MAX(0, cos(SpotCutoff)) */
 644    GLfloat ConstantAttenuation;
 645    GLfloat LinearAttenuation;
 646    GLfloat QuadraticAttenuation;
 647    GLboolean Enabled;           /**< On/off flag */
 648
 649    /**
 650     * \name Derived fields
 651     */
 652    /*@{*/
 653    GLbitfield _Flags;           /**< State */
 654
 655    GLfloat _Position[4];        /**< position in eye/obj coordinates */
 656    GLfloat _VP_inf_norm[3];     /**< Norm direction to infinite light */
 657    GLfloat _h_inf_norm[3];      /**< Norm( _VP_inf_norm + <0,0,1> ) */
 658    GLfloat _NormSpotDirection[4]; /**< normalized spotlight direction */
 659    GLfloat _VP_inf_spot_attenuation;
 660
 661    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /**< to replace a pow() call */
 662    GLfloat _MatAmbient[2][3];   /**< material ambient * light ambient */
 663    GLfloat _MatDiffuse[2][3];   /**< material diffuse * light diffuse */
 664    GLfloat _MatSpecular[2][3];  /**< material spec * light specular */
 665    GLfloat _dli;                /**< CI diffuse light intensity */
 666    GLfloat _sli;                /**< CI specular light intensity */
 667    /*@}*/
 668 };
 669
 670
 671 /**
 672  * Light model state.
 673  */
 674 struct gl_lightmodel
 675 {
 676    GLfloat Ambient[4];          /**< ambient color */
 677    GLboolean LocalViewer;       /**< Local (or infinite) view point? */
 678    GLboolean TwoSide;           /**< Two (or one) sided lighting? */
 679    GLenum ColorControl;         /**< either GL_SINGLE_COLOR
 680                                  *    or GL_SEPARATE_SPECULAR_COLOR */
 681 };
 682
 683
 684 /**
 685  * Material state.
 686  */
 687 struct gl_material
 688 {
 689    GLfloat Attrib[MAT_ATTRIB_MAX][4];
 690 };
 691
 692
 693 /**
 694  * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
 695  */
 696 struct gl_accum_attrib
 697 {
 698    GLfloat ClearColor[4];       /**< Accumulation buffer clear color */
 699 };
 700
 701
 702 /**
 703  * Used for storing clear color, texture border color, etc.
 704  * The float values are typically unclamped.
 705  */
 706 union gl_color_union
 707 {
 708    GLfloat f[4];
 709    GLint i[4];
 710    GLuint ui[4];
 711 };
 712
 713
 714 /**
 715  * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
 716  */
 717 struct gl_colorbuffer_attrib
 718 {
 719    GLuint ClearIndex;                      /**< Index for glClear */
 720    union gl_color_union ClearColor;        /**< Color for glClear, unclamped */
 721    GLuint IndexMask;                       /**< Color index write mask */
 722    GLubyte ColorMask[MAX_DRAW_BUFFERS][4]; /**< Each flag is 0xff or 0x0 */
 723
 724    GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
 725
 726    /**
 727     * \name alpha testing
 728     */
 729    /*@{*/
 730    GLboolean AlphaEnabled;              /**< Alpha test enabled flag */
 731    GLenum AlphaFunc;                    /**< Alpha test function */
 732    GLfloat AlphaRefUnclamped;
 733    GLclampf AlphaRef;                   /**< Alpha reference value */
 734    /*@}*/
 735
 736    /**
 737     * \name Blending
 738     */
 739    /*@{*/
 740    GLbitfield BlendEnabled;             /**< Per-buffer blend enable flags */
 741
 742    /* NOTE: this does _not_ depend on fragment clamping or any other clamping
 743     * control, only on the fixed-pointness of the render target.
 744     * The query does however depend on fragment color clamping.
 745     */
 746    GLfloat BlendColorUnclamped[4];               /**< Blending color */
 747    GLfloat BlendColor[4];               /**< Blending color */
 748
 749    struct
 750    {
 751       GLenum SrcRGB;             /**< RGB blend source term */
 752       GLenum DstRGB;             /**< RGB blend dest term */
 753       GLenum SrcA;               /**< Alpha blend source term */
 754       GLenum DstA;               /**< Alpha blend dest term */
 755       GLenum EquationRGB;        /**< GL_ADD, GL_SUBTRACT, etc. */
 756       GLenum EquationA;          /**< GL_ADD, GL_SUBTRACT, etc. */
 757    } Blend[MAX_DRAW_BUFFERS];
 758    /** Are the blend func terms currently different for each buffer/target? */
 759    GLboolean _BlendFuncPerBuffer;
 760    /** Are the blend equations currently different for each buffer/target? */
 761    GLboolean _BlendEquationPerBuffer;
 762    /*@}*/
 763
 764    /**
 765     * \name Logic op
 766     */
 767    /*@{*/
 768    GLenum LogicOp;                      /**< Logic operator */
 769    GLboolean IndexLogicOpEnabled;       /**< Color index logic op enabled flag */
 770    GLboolean ColorLogicOpEnabled;       /**< RGBA logic op enabled flag */
 771    /*@}*/
 772
 773    GLboolean DitherFlag;                /**< Dither enable flag */
 774
 775    GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 776    GLboolean _ClampFragmentColor; /** < with GL_FIXED_ONLY_ARB resolved */
 777    GLenum ClampReadColor;     /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 778    GLboolean _ClampReadColor;     /** < with GL_FIXED_ONLY_ARB resolved */
 779
 780    GLboolean sRGBEnabled;       /**< Framebuffer sRGB blending/updating requested */
 781 };
 782
 783
 784 /**
 785  * Current attribute group (GL_CURRENT_BIT).
 786  */
 787 struct gl_current_attrib
 788 {
 789    /**
 790     * \name Current vertex attributes.
 791     * \note Values are valid only after FLUSH_VERTICES has been called.
 792     * \note Index and Edgeflag current values are stored as floats in the
 793     * SIX and SEVEN attribute slots.
 794     */
 795    GLfloat Attrib[VERT_ATTRIB_MAX][4];  /**< Position, color, texcoords, etc */
 796
 797    /**
 798     * \name Current raster position attributes (always valid).
 799     * \note This set of attributes is very similar to the SWvertex struct.
 800     */
 801    /*@{*/
 802    GLfloat RasterPos[4];
 803    GLfloat RasterDistance;
 804    GLfloat RasterColor[4];
 805    GLfloat RasterSecondaryColor[4];
 806    GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
 807    GLboolean RasterPosValid;
 808    /*@}*/
 809 };
 810
 811
 812 /**
 813  * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
 814  */
 815 struct gl_depthbuffer_attrib
 816 {
 817    GLenum Func;                 /**< Function for depth buffer compare */
 818    GLclampd Clear;              /**< Value to clear depth buffer to */
 819    GLboolean Test;              /**< Depth buffering enabled flag */
 820    GLboolean Mask;              /**< Depth buffer writable? */
 821    GLboolean BoundsTest;        /**< GL_EXT_depth_bounds_test */
 822    GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
 823 };
 824
 825
 826 /**
 827  * Evaluator attribute group (GL_EVAL_BIT).
 828  */
 829 struct gl_eval_attrib
 830 {
 831    /**
 832     * \name Enable bits
 833     */
 834    /*@{*/
 835    GLboolean Map1Color4;
 836    GLboolean Map1Index;
 837    GLboolean Map1Normal;
 838    GLboolean Map1TextureCoord1;
 839    GLboolean Map1TextureCoord2;
 840    GLboolean Map1TextureCoord3;
 841    GLboolean Map1TextureCoord4;
 842    GLboolean Map1Vertex3;
 843    GLboolean Map1Vertex4;
 844    GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
 845    GLboolean Map2Color4;
 846    GLboolean Map2Index;
 847    GLboolean Map2Normal;
 848    GLboolean Map2TextureCoord1;
 849    GLboolean Map2TextureCoord2;
 850    GLboolean Map2TextureCoord3;
 851    GLboolean Map2TextureCoord4;
 852    GLboolean Map2Vertex3;
 853    GLboolean Map2Vertex4;
 854    GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
 855    GLboolean AutoNormal;
 856    /*@}*/
 857
 858    /**
 859     * \name Map Grid endpoints and divisions and calculated du values
 860     */
 861    /*@{*/
 862    GLint MapGrid1un;
 863    GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
 864    GLint MapGrid2un, MapGrid2vn;
 865    GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
 866    GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
 867    /*@}*/
 868 };
 869
 870
 871 /**
 872  * Fog attribute group (GL_FOG_BIT).
 873  */
 874 struct gl_fog_attrib
 875 {
 876    GLboolean Enabled;           /**< Fog enabled flag */
 877    GLfloat ColorUnclamped[4];            /**< Fog color */
 878    GLfloat Color[4];            /**< Fog color */
 879    GLfloat Density;             /**< Density >= 0.0 */
 880    GLfloat Start;               /**< Start distance in eye coords */
 881    GLfloat End;                 /**< End distance in eye coords */
 882    GLfloat Index;               /**< Fog index */
 883    GLenum Mode;                 /**< Fog mode */
 884    GLboolean ColorSumEnabled;
 885    GLenum FogCoordinateSource;  /**< GL_EXT_fog_coord */
 886    GLfloat _Scale;              /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
 887 };
 888
 889
 890 /**
 891  * \brief Layout qualifiers for gl_FragDepth.
 892  *
 893  * Extension AMD_conservative_depth allows gl_FragDepth to be redeclared with
 894  * a layout qualifier.
 895  *
 896  * \see enum ir_depth_layout
 897  */
 898 enum gl_frag_depth_layout {
 899     FRAG_DEPTH_LAYOUT_NONE, /**< No layout is specified. */
 900     FRAG_DEPTH_LAYOUT_ANY,
 901     FRAG_DEPTH_LAYOUT_GREATER,
 902     FRAG_DEPTH_LAYOUT_LESS,
 903     FRAG_DEPTH_LAYOUT_UNCHANGED
 904 };
 905
 906
 907 /**
 908  * Hint attribute group (GL_HINT_BIT).
 909  *
 910  * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
 911  */
 912 struct gl_hint_attrib
 913 {
 914    GLenum PerspectiveCorrection;
 915    GLenum PointSmooth;
 916    GLenum LineSmooth;
 917    GLenum PolygonSmooth;
 918    GLenum Fog;
 919    GLenum ClipVolumeClipping;   /**< GL_EXT_clip_volume_hint */
 920    GLenum TextureCompression;   /**< GL_ARB_texture_compression */
 921    GLenum GenerateMipmap;       /**< GL_SGIS_generate_mipmap */
 922    GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
 923 };
 924
 925 /**
 926  * Light state flags.
 927  */
 928 /*@{*/
 929 #define LIGHT_SPOT         0x1
 930 #define LIGHT_LOCAL_VIEWER 0x2
 931 #define LIGHT_POSITIONAL   0x4
 932 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 933 /*@}*/
 934
 935
 936 /**
 937  * Lighting attribute group (GL_LIGHT_BIT).
 938  */
 939 struct gl_light_attrib
 940 {
 941    struct gl_light Light[MAX_LIGHTS];   /**< Array of light sources */
 942    struct gl_lightmodel Model;          /**< Lighting model */
 943
 944    /**
 945     * Must flush FLUSH_VERTICES before referencing:
 946     */
 947    /*@{*/
 948    struct gl_material Material;         /**< Includes front & back values */
 949    /*@}*/
 950
 951    GLboolean Enabled;                   /**< Lighting enabled flag */
 952    GLenum ShadeModel;                   /**< GL_FLAT or GL_SMOOTH */
 953    GLenum ProvokingVertex;              /**< GL_EXT_provoking_vertex */
 954    GLenum ColorMaterialFace;            /**< GL_FRONT, BACK or FRONT_AND_BACK */
 955    GLenum ColorMaterialMode;            /**< GL_AMBIENT, GL_DIFFUSE, etc */
 956    GLbitfield ColorMaterialBitmask;     /**< bitmask formed from Face and Mode */
 957    GLboolean ColorMaterialEnabled;
 958    GLenum ClampVertexColor;
 959    GLboolean _ClampVertexColor;
 960
 961    struct gl_light EnabledList;         /**< List sentinel */
 962
 963    /**
 964     * Derived state for optimizations:
 965     */
 966    /*@{*/
 967    GLboolean _NeedEyeCoords;
 968    GLboolean _NeedVertices;             /**< Use fast shader? */
 969    GLbitfield _Flags;                   /**< LIGHT_* flags, see above */
 970    GLfloat _BaseColor[2][3];
 971    /*@}*/
 972 };
 973
 974
 975 /**
 976  * Line attribute group (GL_LINE_BIT).
 977  */
 978 struct gl_line_attrib
 979 {
 980    GLboolean SmoothFlag;        /**< GL_LINE_SMOOTH enabled? */
 981    GLboolean StippleFlag;       /**< GL_LINE_STIPPLE enabled? */
 982    GLushort StipplePattern;     /**< Stipple pattern */
 983    GLint StippleFactor;         /**< Stipple repeat factor */
 984    GLfloat Width;               /**< Line width */
 985 };
 986
 987
 988 /**
 989  * Display list attribute group (GL_LIST_BIT).
 990  */
 991 struct gl_list_attrib
 992 {
 993    GLuint ListBase;
 994 };
 995
 996
 997 /**
 998  * Multisample attribute group (GL_MULTISAMPLE_BIT).
 999  */
1000 struct gl_multisample_attrib
1001 {
1002    GLboolean Enabled;
1003    GLboolean _Enabled;   /**< true if Enabled and multisample buffer */
1004    GLboolean SampleAlphaToCoverage;
1005    GLboolean SampleAlphaToOne;
1006    GLboolean SampleCoverage;
1007    GLfloat SampleCoverageValue;
1008    GLboolean SampleCoverageInvert;
1009 };
1010
1011
1012 /**
1013  * A pixelmap (see glPixelMap)
1014  */
1015 struct gl_pixelmap
1016 {
1017    GLint Size;
1018    GLfloat Map[MAX_PIXEL_MAP_TABLE];
1019    GLubyte Map8[MAX_PIXEL_MAP_TABLE];  /**< converted to 8-bit color */
1020 };
1021
1022
1023 /**
1024  * Collection of all pixelmaps
1025  */
1026 struct gl_pixelmaps
1027 {
1028    struct gl_pixelmap RtoR;  /**< i.e. GL_PIXEL_MAP_R_TO_R */
1029    struct gl_pixelmap GtoG;
1030    struct gl_pixelmap BtoB;
1031    struct gl_pixelmap AtoA;
1032    struct gl_pixelmap ItoR;
1033    struct gl_pixelmap ItoG;
1034    struct gl_pixelmap ItoB;
1035    struct gl_pixelmap ItoA;
1036    struct gl_pixelmap ItoI;
1037    struct gl_pixelmap StoS;
1038 };
1039
1040
1041 /**
1042  * Pixel attribute group (GL_PIXEL_MODE_BIT).
1043  */
1044 struct gl_pixel_attrib
1045 {
1046    GLenum ReadBuffer;           /**< source buffer for glRead/CopyPixels() */
1047
1048    /*--- Begin Pixel Transfer State ---*/
1049    /* Fields are in the order in which they're applied... */
1050
1051    /** Scale & Bias (index shift, offset) */
1052    /*@{*/
1053    GLfloat RedBias, RedScale;
1054    GLfloat GreenBias, GreenScale;
1055    GLfloat BlueBias, BlueScale;
1056    GLfloat AlphaBias, AlphaScale;
1057    GLfloat DepthBias, DepthScale;
1058    GLint IndexShift, IndexOffset;
1059    /*@}*/
1060
1061    /* Pixel Maps */
1062    /* Note: actual pixel maps are not part of this attrib group */
1063    GLboolean MapColorFlag;
1064    GLboolean MapStencilFlag;
1065
1066    /*--- End Pixel Transfer State ---*/
1067
1068    /** glPixelZoom */
1069    GLfloat ZoomX, ZoomY;
1070 };
1071
1072
1073 /**
1074  * Point attribute group (GL_POINT_BIT).
1075  */
1076 struct gl_point_attrib
1077 {
1078    GLboolean SmoothFlag;        /**< True if GL_POINT_SMOOTH is enabled */
1079    GLfloat Size;                /**< User-specified point size */
1080    GLfloat Params[3];           /**< GL_EXT_point_parameters */
1081    GLfloat MinSize, MaxSize;    /**< GL_EXT_point_parameters */
1082    GLfloat Threshold;           /**< GL_EXT_point_parameters */
1083    GLboolean _Attenuated;       /**< True if Params != [1, 0, 0] */
1084    GLboolean PointSprite;       /**< GL_NV/ARB_point_sprite */
1085    GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite*/
1086    GLenum SpriteRMode;          /**< GL_NV_point_sprite (only!) */
1087    GLenum SpriteOrigin;         /**< GL_ARB_point_sprite */
1088 };
1089
1090
1091 /**
1092  * Polygon attribute group (GL_POLYGON_BIT).
1093  */
1094 struct gl_polygon_attrib
1095 {
1096    GLenum FrontFace;            /**< Either GL_CW or GL_CCW */
1097    GLenum FrontMode;            /**< Either GL_POINT, GL_LINE or GL_FILL */
1098    GLenum BackMode;             /**< Either GL_POINT, GL_LINE or GL_FILL */
1099    GLboolean _FrontBit;         /**< 0=GL_CCW, 1=GL_CW */
1100    GLboolean CullFlag;          /**< Culling on/off flag */
1101    GLboolean SmoothFlag;        /**< True if GL_POLYGON_SMOOTH is enabled */
1102    GLboolean StippleFlag;       /**< True if GL_POLYGON_STIPPLE is enabled */
1103    GLenum CullFaceMode;         /**< Culling mode GL_FRONT or GL_BACK */
1104    GLfloat OffsetFactor;        /**< Polygon offset factor, from user */
1105    GLfloat OffsetUnits;         /**< Polygon offset units, from user */
1106    GLboolean OffsetPoint;       /**< Offset in GL_POINT mode */
1107    GLboolean OffsetLine;        /**< Offset in GL_LINE mode */
1108    GLboolean OffsetFill;        /**< Offset in GL_FILL mode */
1109 };
1110
1111
1112 /**
1113  * Scissor attributes (GL_SCISSOR_BIT).
1114  */
1115 struct gl_scissor_attrib
1116 {
1117    GLboolean Enabled;           /**< Scissor test enabled? */
1118    GLint X, Y;                  /**< Lower left corner of box */
1119    GLsizei Width, Height;       /**< Size of box */
1120 };
1121
1122
1123 /**
1124  * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1125  *
1126  * Three sets of stencil data are tracked so that OpenGL 2.0,
1127  * GL_EXT_stencil_two_side, and GL_ATI_separate_stencil can all be supported
1128  * simultaneously.  In each of the stencil state arrays, element 0 corresponds
1129  * to GL_FRONT.  Element 1 corresponds to the OpenGL 2.0 /
1130  * GL_ATI_separate_stencil GL_BACK state.  Element 2 corresponds to the
1131  * GL_EXT_stencil_two_side GL_BACK state.
1132  *
1133  * The derived value \c _BackFace is either 1 or 2 depending on whether or
1134  * not GL_STENCIL_TEST_TWO_SIDE_EXT is enabled.
1135  *
1136  * The derived value \c _TestTwoSide is set when the front-face and back-face
1137  * stencil state are different.
1138  */
1139 struct gl_stencil_attrib
1140 {
1141    GLboolean Enabled;           /**< Enabled flag */
1142    GLboolean TestTwoSide;       /**< GL_EXT_stencil_two_side */
1143    GLubyte ActiveFace;          /**< GL_EXT_stencil_two_side (0 or 2) */
1144    GLboolean _Enabled;          /**< Enabled and stencil buffer present */
1145    GLboolean _TestTwoSide;
1146    GLubyte _BackFace;           /**< Current back stencil state (1 or 2) */
1147    GLenum Function[3];          /**< Stencil function */
1148    GLenum FailFunc[3];          /**< Fail function */
1149    GLenum ZPassFunc[3];         /**< Depth buffer pass function */
1150    GLenum ZFailFunc[3];         /**< Depth buffer fail function */
1151    GLint Ref[3];                /**< Reference value */
1152    GLuint ValueMask[3];         /**< Value mask */
1153    GLuint WriteMask[3];         /**< Write mask */
1154    GLuint Clear;                /**< Clear value */
1155 };
1156
1157
1158 /**
1159  * An index for each type of texture object.  These correspond to the GL
1160  * texture target enums, such as GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP, etc.
1161  * Note: the order is from highest priority to lowest priority.
1162  */
1163 typedef enum
1164 {
1165    TEXTURE_BUFFER_INDEX,
1166    TEXTURE_2D_ARRAY_INDEX,
1167    TEXTURE_1D_ARRAY_INDEX,
1168    TEXTURE_CUBE_INDEX,
1169    TEXTURE_3D_INDEX,
1170    TEXTURE_RECT_INDEX,
1171    TEXTURE_2D_INDEX,
1172    TEXTURE_1D_INDEX,
1173    NUM_TEXTURE_TARGETS
1174 } gl_texture_index;
1175
1176
1177 /**
1178  * Bit flags for each type of texture object
1179  * Used for Texture.Unit[]._ReallyEnabled flags.
1180  */
1181 /*@{*/
1182 #define TEXTURE_BUFFER_BIT   (1 << TEXTURE_BUFFER_INDEX)
1183 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1184 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1185 #define TEXTURE_CUBE_BIT     (1 << TEXTURE_CUBE_INDEX)
1186 #define TEXTURE_3D_BIT       (1 << TEXTURE_3D_INDEX)
1187 #define TEXTURE_RECT_BIT     (1 << TEXTURE_RECT_INDEX)
1188 #define TEXTURE_2D_BIT       (1 << TEXTURE_2D_INDEX)
1189 #define TEXTURE_1D_BIT       (1 << TEXTURE_1D_INDEX)
1190 /*@}*/
1191
1192
1193 /**
1194  * TexGenEnabled flags.
1195  */
1196 /*@{*/
1197 #define S_BIT 1
1198 #define T_BIT 2
1199 #define R_BIT 4
1200 #define Q_BIT 8
1201 #define STR_BITS (S_BIT | T_BIT | R_BIT)
1202 /*@}*/
1203
1204
1205 /**
1206  * Bit flag versions of the corresponding GL_ constants.
1207  */
1208 /*@{*/
1209 #define TEXGEN_SPHERE_MAP        0x1
1210 #define TEXGEN_OBJ_LINEAR        0x2
1211 #define TEXGEN_EYE_LINEAR        0x4
1212 #define TEXGEN_REFLECTION_MAP_NV 0x8
1213 #define TEXGEN_NORMAL_MAP_NV     0x10
1214
1215 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
1216                                   TEXGEN_REFLECTION_MAP_NV | \
1217                                   TEXGEN_NORMAL_MAP_NV)
1218 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
1219                                   TEXGEN_REFLECTION_MAP_NV | \
1220                                   TEXGEN_NORMAL_MAP_NV     | \
1221                                   TEXGEN_EYE_LINEAR)
1222 /*@}*/
1223
1224
1225
1226 /** Tex-gen enabled for texture unit? */
1227 #define ENABLE_TEXGEN(unit) (1 << (unit))
1228
1229 /** Non-identity texture matrix for texture unit? */
1230 #define ENABLE_TEXMAT(unit) (1 << (unit))
1231
1232
1233 /**
1234  * Texture image state.  Drivers will typically create a subclass of this
1235  * with extra fields for memory buffers, etc.
1236  */
1237 struct gl_texture_image
1238 {
1239    GLint InternalFormat;        /**< Internal format as given by the user */
1240    GLenum _BaseFormat;          /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1241                                  *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1242                                  *   GL_INTENSITY, GL_DEPTH_COMPONENT or
1243                                  *   GL_DEPTH_STENCIL_EXT only. Used for
1244                                  *   choosing TexEnv arithmetic.
1245                                  */
1246    gl_format TexFormat;         /**< The actual texture memory format */
1247
1248    GLuint Border;               /**< 0 or 1 */
1249    GLuint Width;                /**< = 2^WidthLog2 + 2*Border */
1250    GLuint Height;               /**< = 2^HeightLog2 + 2*Border */
1251    GLuint Depth;                /**< = 2^DepthLog2 + 2*Border */
1252    GLuint Width2;               /**< = Width - 2*Border */
1253    GLuint Height2;              /**< = Height - 2*Border */
1254    GLuint Depth2;               /**< = Depth - 2*Border */
1255    GLuint WidthLog2;            /**< = log2(Width2) */
1256    GLuint HeightLog2;           /**< = log2(Height2) */
1257    GLuint DepthLog2;            /**< = log2(Depth2) */
1258    GLuint MaxLog2;              /**< = MAX(WidthLog2, HeightLog2) */
1259
1260    struct gl_texture_object *TexObject;  /**< Pointer back to parent object */
1261    GLuint Level;                /**< Which mipmap level am I? */
1262    /** Cube map face: index into gl_texture_object::Image[] array */
1263    GLuint Face;
1264
1265    GLuint RowStride;            /**< Padded width in units of texels */
1266    GLuint *ImageOffsets;        /**< if 3D texture: array [Depth] of offsets to
1267                                      each 2D slice in 'Data', in texels */
1268    GLvoid *Data;                /**< Image data, accessed via FetchTexel() */
1269 };
1270
1271
1272 /**
1273  * Indexes for cube map faces.
1274  */
1275 typedef enum
1276 {
1277    FACE_POS_X = 0,
1278    FACE_NEG_X = 1,
1279    FACE_POS_Y = 2,
1280    FACE_NEG_Y = 3,
1281    FACE_POS_Z = 4,
1282    FACE_NEG_Z = 5,
1283    MAX_FACES = 6
1284 } gl_face_index;
1285
1286
1287 /**
1288  * Sampler object state.  These objects are new with GL_ARB_sampler_objects
1289  * and OpenGL 3.3.  Legacy texture objects also contain a sampler object.
1290  */
1291 struct gl_sampler_object
1292 {
1293    GLuint Name;
1294    GLint RefCount;
1295
1296    GLenum WrapS;                /**< S-axis texture image wrap mode */
1297    GLenum WrapT;                /**< T-axis texture image wrap mode */
1298    GLenum WrapR;                /**< R-axis texture image wrap mode */
1299    GLenum MinFilter;            /**< minification filter */
1300    GLenum MagFilter;            /**< magnification filter */
1301    union gl_color_union BorderColor;  /**< Interpreted according to texture format */
1302    GLfloat MinLod;              /**< min lambda, OpenGL 1.2 */
1303    GLfloat MaxLod;              /**< max lambda, OpenGL 1.2 */
1304    GLfloat LodBias;             /**< OpenGL 1.4 */
1305    GLfloat MaxAnisotropy;       /**< GL_EXT_texture_filter_anisotropic */
1306    GLenum CompareMode;          /**< GL_ARB_shadow */
1307    GLenum CompareFunc;          /**< GL_ARB_shadow */
1308    GLfloat CompareFailValue;    /**< GL_ARB_shadow_ambient */
1309    GLenum sRGBDecode;           /**< GL_DECODE_EXT or GL_SKIP_DECODE_EXT */
1310    GLboolean CubeMapSeamless;   /**< GL_AMD_seamless_cubemap_per_texture */
1311
1312    /* deprecated sampler state */
1313    GLenum DepthMode;            /**< GL_ARB_depth_texture */
1314 };
1315
1316
1317 /**
1318  * Texture object state.  Contains the array of mipmap images, border color,
1319  * wrap modes, filter modes, and shadow/texcompare state.
1320  */
1321 struct gl_texture_object
1322 {
1323    _glthread_Mutex Mutex;       /**< for thread safety */
1324    GLint RefCount;              /**< reference count */
1325    GLuint Name;                 /**< the user-visible texture object ID */
1326    GLenum Target;               /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1327
1328    struct gl_sampler_object Sampler;
1329
1330    GLfloat Priority;            /**< in [0,1] */
1331    GLint BaseLevel;             /**< min mipmap level, OpenGL 1.2 */
1332    GLint MaxLevel;              /**< max mipmap level, OpenGL 1.2 */
1333    GLint _MaxLevel;             /**< actual max mipmap level (q in the spec) */
1334    GLfloat _MaxLambda;          /**< = _MaxLevel - BaseLevel (q - b in spec) */
1335    GLint CropRect[4];           /**< GL_OES_draw_texture */
1336    GLenum Swizzle[4];           /**< GL_EXT_texture_swizzle */
1337    GLuint _Swizzle;             /**< same as Swizzle, but SWIZZLE_* format */
1338    GLboolean GenerateMipmap;    /**< GL_SGIS_generate_mipmap */
1339    GLboolean _Complete;         /**< Is texture object complete? */
1340    GLboolean _RenderToTexture;  /**< Any rendering to this texture? */
1341    GLboolean Purgeable;         /**< Is the buffer purgeable under memory pressure? */
1342
1343    /** Actual texture images, indexed by [cube face] and [mipmap level] */
1344    struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1345
1346    /** GL_ARB_texture_buffer_object */
1347    struct gl_buffer_object *BufferObject;
1348    GLenum BufferObjectFormat;
1349
1350    /**
1351     * \name For device driver.
1352     * Note: instead of attaching driver data to this pointer, it's preferable
1353     * to instead use this struct as a base class for your own texture object
1354     * class.  Driver->NewTextureObject() can be used to implement the
1355     * allocation.
1356     */
1357    void *DriverData;    /**< Arbitrary device driver data */
1358 };
1359
1360
1361 /** Up to four combiner sources are possible with GL_NV_texture_env_combine4 */
1362 #define MAX_COMBINER_TERMS 4
1363
1364
1365 /**
1366  * Texture combine environment state.
1367  */
1368 struct gl_tex_env_combine_state
1369 {
1370    GLenum ModeRGB;       /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1371    GLenum ModeA;         /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1372    /** Source terms: GL_PRIMARY_COLOR, GL_TEXTURE, etc */
1373    GLenum SourceRGB[MAX_COMBINER_TERMS];
1374    GLenum SourceA[MAX_COMBINER_TERMS];
1375    /** Source operands: GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, etc */
1376    GLenum OperandRGB[MAX_COMBINER_TERMS];
1377    GLenum OperandA[MAX_COMBINER_TERMS];
1378    GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1379    GLuint ScaleShiftA;   /**< 0, 1 or 2 */
1380    GLuint _NumArgsRGB;   /**< Number of inputs used for the RGB combiner */
1381    GLuint _NumArgsA;     /**< Number of inputs used for the A combiner */
1382 };
1383
1384
1385 /**
1386  * Texture coord generation state.
1387  */
1388 struct gl_texgen
1389 {
1390    GLenum Mode;         /**< GL_EYE_LINEAR, GL_SPHERE_MAP, etc */
1391    GLbitfield _ModeBit; /**< TEXGEN_x bit corresponding to Mode */
1392    GLfloat ObjectPlane[4];
1393    GLfloat EyePlane[4];
1394 };
1395
1396
1397 /**
1398  * Texture unit state.  Contains enable flags, texture environment/function/
1399  * combiners, texgen state, and pointers to current texture objects.
1400  */
1401 struct gl_texture_unit
1402 {
1403    GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
1404    GLbitfield _ReallyEnabled;   /**< 0 or exactly one of TEXTURE_*_BIT flags */
1405
1406    GLenum EnvMode;              /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1407    GLclampf EnvColor[4];
1408    GLfloat EnvColorUnclamped[4];
1409
1410    struct gl_texgen GenS;
1411    struct gl_texgen GenT;
1412    struct gl_texgen GenR;
1413    struct gl_texgen GenQ;
1414    GLbitfield TexGenEnabled;    /**< Bitwise-OR of [STRQ]_BIT values */
1415    GLbitfield _GenFlags;        /**< Bitwise-OR of Gen[STRQ]._ModeBit */
1416
1417    GLfloat LodBias;             /**< for biasing mipmap levels */
1418    GLenum BumpTarget;
1419    GLfloat RotMatrix[4]; /* 2x2 matrix */
1420
1421    /** Current sampler object (GL_ARB_sampler_objects) */
1422    struct gl_sampler_object *Sampler;
1423
1424    /**
1425     * \name GL_EXT_texture_env_combine
1426     */
1427    struct gl_tex_env_combine_state Combine;
1428
1429    /**
1430     * Derived state based on \c EnvMode and the \c BaseFormat of the
1431     * currently enabled texture.
1432     */
1433    struct gl_tex_env_combine_state _EnvMode;
1434
1435    /**
1436     * Currently enabled combiner state.  This will point to either
1437     * \c Combine or \c _EnvMode.
1438     */
1439    struct gl_tex_env_combine_state *_CurrentCombine;
1440
1441    /** Current texture object pointers */
1442    struct gl_texture_object *CurrentTex[NUM_TEXTURE_TARGETS];
1443
1444    /** Points to highest priority, complete and enabled texture object */
1445    struct gl_texture_object *_Current;
1446 };
1447
1448
1449 /**
1450  * Texture attribute group (GL_TEXTURE_BIT).
1451  */
1452 struct gl_texture_attrib
1453 {
1454    GLuint CurrentUnit;   /**< GL_ACTIVE_TEXTURE */
1455    struct gl_texture_unit Unit[MAX_COMBINED_TEXTURE_IMAGE_UNITS];
1456
1457    struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1458
1459    /** GL_ARB_texture_buffer_object */
1460    struct gl_buffer_object *BufferObject;
1461
1462    /** GL_ARB_seamless_cubemap */
1463    GLboolean CubeMapSeamless;
1464
1465    /** Texture units/samplers used by vertex or fragment texturing */
1466    GLbitfield _EnabledUnits;
1467
1468    /** Texture coord units/sets used for fragment texturing */
1469    GLbitfield _EnabledCoordUnits;
1470
1471    /** Texture coord units that have texgen enabled */
1472    GLbitfield _TexGenEnabled;
1473
1474    /** Texture coord units that have non-identity matrices */
1475    GLbitfield _TexMatEnabled;
1476
1477    /** Bitwise-OR of all Texture.Unit[i]._GenFlags */
1478    GLbitfield _GenFlags;
1479 };
1480
1481
1482 /**
1483  * Data structure representing a single clip plane (e.g. one of the elements
1484  * of the ctx->Transform.EyeUserPlane or ctx->Transform._ClipUserPlane array).
1485  */
1486 typedef GLfloat gl_clip_plane[4];
1487
1488
1489 /**
1490  * Transformation attribute group (GL_TRANSFORM_BIT).
1491  */
1492 struct gl_transform_attrib
1493 {
1494    GLenum MatrixMode;                           /**< Matrix mode */
1495    gl_clip_plane EyeUserPlane[MAX_CLIP_PLANES]; /**< User clip planes */
1496    gl_clip_plane _ClipUserPlane[MAX_CLIP_PLANES]; /**< derived */
1497    GLbitfield ClipPlanesEnabled;                /**< on/off bitmask */
1498    GLboolean Normalize;                         /**< Normalize all normals? */
1499    GLboolean RescaleNormals;                    /**< GL_EXT_rescale_normal */
1500    GLboolean RasterPositionUnclipped;           /**< GL_IBM_rasterpos_clip */
1501    GLboolean DepthClamp;                        /**< GL_ARB_depth_clamp */
1502
1503    GLfloat CullEyePos[4];
1504    GLfloat CullObjPos[4];
1505 };
1506
1507
1508 /**
1509  * Viewport attribute group (GL_VIEWPORT_BIT).
1510  */
1511 struct gl_viewport_attrib
1512 {
1513    GLint X, Y;                  /**< position */
1514    GLsizei Width, Height;       /**< size */
1515    GLfloat Near, Far;           /**< Depth buffer range */
1516    GLmatrix _WindowMap;         /**< Mapping transformation as a matrix. */
1517 };
1518
1519
1520 /**
1521  * GL_ARB_vertex/pixel_buffer_object buffer object
1522  */
1523 struct gl_buffer_object
1524 {
1525    _glthread_Mutex Mutex;
1526    GLint RefCount;
1527    GLuint Name;
1528    GLenum Usage;        /**< GL_STREAM_DRAW_ARB, GL_STREAM_READ_ARB, etc. */
1529    GLsizeiptrARB Size;  /**< Size of buffer storage in bytes */
1530    GLubyte *Data;       /**< Location of storage either in RAM or VRAM. */
1531    /** Fields describing a mapped buffer */
1532    /*@{*/
1533    GLbitfield AccessFlags; /**< Mask of GL_MAP_x_BIT flags */
1534    GLvoid *Pointer;     /**< User-space address of mapping */
1535    GLintptr Offset;     /**< Mapped offset */
1536    GLsizeiptr Length;   /**< Mapped length */
1537    /*@}*/
1538    GLboolean Written;   /**< Ever written to? (for debugging) */
1539    GLboolean Purgeable; /**< Is the buffer purgeable under memory pressure? */
1540 };
1541
1542
1543 /**
1544  * Client pixel packing/unpacking attributes
1545  */
1546 struct gl_pixelstore_attrib
1547 {
1548    GLint Alignment;
1549    GLint RowLength;
1550    GLint SkipPixels;
1551    GLint SkipRows;
1552    GLint ImageHeight;
1553    GLint SkipImages;
1554    GLboolean SwapBytes;
1555    GLboolean LsbFirst;
1556    GLboolean Invert;        /**< GL_MESA_pack_invert */
1557    struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1558 };
1559
1560
1561 /**
1562  * Client vertex array attributes
1563  */
1564 struct gl_client_array
1565 {
1566    GLint Size;                  /**< components per element (1,2,3,4) */
1567    GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */
1568    GLenum Format;               /**< default: GL_RGBA, but may be GL_BGRA */
1569    GLsizei Stride;              /**< user-specified stride */
1570    GLsizei StrideB;             /**< actual stride in bytes */
1571    const GLubyte *Ptr;          /**< Points to array data */
1572    GLboolean Enabled;           /**< Enabled flag is a boolean */
1573    GLboolean Normalized;        /**< GL_ARB_vertex_program */
1574    GLboolean Integer;           /**< Integer-valued? */
1575    GLuint InstanceDivisor;      /**< GL_ARB_instanced_arrays */
1576    GLuint _ElementSize;         /**< size of each element in bytes */
1577
1578    struct gl_buffer_object *BufferObj;/**< GL_ARB_vertex_buffer_object */
1579    GLuint _MaxElement;          /**< max element index into array buffer + 1 */
1580 };
1581
1582
1583 /**
1584  * Collection of vertex arrays.  Defined by the GL_APPLE_vertex_array_object
1585  * extension, but a nice encapsulation in any case.
1586  */
1587 struct gl_array_object
1588 {
1589    /** Name of the array object as received from glGenVertexArrayAPPLE. */
1590    GLuint Name;
1591
1592    GLint RefCount;
1593    _glthread_Mutex Mutex;
1594    GLboolean VBOonly;  /**< require all arrays to live in VBOs? */
1595
1596    /** Conventional vertex arrays */
1597    /*@{*/
1598    struct gl_client_array Vertex;
1599    struct gl_client_array Weight;
1600    struct gl_client_array Normal;
1601    struct gl_client_array Color;
1602    struct gl_client_array SecondaryColor;
1603    struct gl_client_array FogCoord;
1604    struct gl_client_array Index;
1605    struct gl_client_array EdgeFlag;
1606    struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
1607    struct gl_client_array PointSize;
1608    /*@}*/
1609
1610    /**
1611     * Generic arrays for vertex programs/shaders.
1612     * For NV vertex programs, these attributes alias and take priority
1613     * over the conventional attribs above.  For ARB vertex programs and
1614     * GLSL vertex shaders, these attributes are separate.
1615     */
1616    struct gl_client_array VertexAttrib[MAX_VERTEX_GENERIC_ATTRIBS];
1617
1618    /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1619    GLbitfield _Enabled;
1620
1621    /**
1622     * Min of all enabled arrays' _MaxElement.  When arrays reside inside VBOs
1623     * we can determine the max legal (in bounds) glDrawElements array index.
1624     */
1625    GLuint _MaxElement;
1626 };
1627
1628
1629 /**
1630  * Vertex array state
1631  */
1632 struct gl_array_attrib
1633 {
1634    /** Currently bound array object. See _mesa_BindVertexArrayAPPLE() */
1635    struct gl_array_object *ArrayObj;
1636
1637    /** The default vertex array object */
1638    struct gl_array_object *DefaultArrayObj;
1639
1640    /** Array objects (GL_ARB/APPLE_vertex_array_object) */
1641    struct _mesa_HashTable *Objects;
1642
1643    GLint ActiveTexture;         /**< Client Active Texture */
1644    GLuint LockFirst;            /**< GL_EXT_compiled_vertex_array */
1645    GLuint LockCount;            /**< GL_EXT_compiled_vertex_array */
1646
1647    /** GL 3.1 (slightly different from GL_NV_primitive_restart) */
1648    GLboolean PrimitiveRestart;
1649    GLuint RestartIndex;
1650
1651    GLbitfield NewState;         /**< mask of _NEW_ARRAY_* values */
1652    GLboolean RebindArrays; /**< whether the VBO module should rebind arrays */
1653
1654    /* GL_ARB_vertex_buffer_object */
1655    struct gl_buffer_object *ArrayBufferObj;
1656    struct gl_buffer_object *ElementArrayBufferObj;
1657 };
1658
1659
1660 /**
1661  * Feedback buffer state
1662  */
1663 struct gl_feedback
1664 {
1665    GLenum Type;
1666    GLbitfield _Mask;    /**< FB_* bits */
1667    GLfloat *Buffer;
1668    GLuint BufferSize;
1669    GLuint Count;
1670 };
1671
1672
1673 /**
1674  * Selection buffer state
1675  */
1676 struct gl_selection
1677 {
1678    GLuint *Buffer;      /**< selection buffer */
1679    GLuint BufferSize;   /**< size of the selection buffer */
1680    GLuint BufferCount;  /**< number of values in the selection buffer */
1681    GLuint Hits;         /**< number of records in the selection buffer */
1682    GLuint NameStackDepth; /**< name stack depth */
1683    GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1684    GLboolean HitFlag;   /**< hit flag */
1685    GLfloat HitMinZ;     /**< minimum hit depth */
1686    GLfloat HitMaxZ;     /**< maximum hit depth */
1687 };
1688
1689
1690 /**
1691  * 1-D Evaluator control points
1692  */
1693 struct gl_1d_map
1694 {
1695    GLuint Order;        /**< Number of control points */
1696    GLfloat u1, u2, du;  /**< u1, u2, 1.0/(u2-u1) */
1697    GLfloat *Points;     /**< Points to contiguous control points */
1698 };
1699
1700
1701 /**
1702  * 2-D Evaluator control points
1703  */
1704 struct gl_2d_map
1705 {
1706    GLuint Uorder;               /**< Number of control points in U dimension */
1707    GLuint Vorder;               /**< Number of control points in V dimension */
1708    GLfloat u1, u2, du;
1709    GLfloat v1, v2, dv;
1710    GLfloat *Points;             /**< Points to contiguous control points */
1711 };
1712
1713
1714 /**
1715  * All evaluator control point state
1716  */
1717 struct gl_evaluators
1718 {
1719    /**
1720     * \name 1-D maps
1721     */
1722    /*@{*/
1723    struct gl_1d_map Map1Vertex3;
1724    struct gl_1d_map Map1Vertex4;
1725    struct gl_1d_map Map1Index;
1726    struct gl_1d_map Map1Color4;
1727    struct gl_1d_map Map1Normal;
1728    struct gl_1d_map Map1Texture1;
1729    struct gl_1d_map Map1Texture2;
1730    struct gl_1d_map Map1Texture3;
1731    struct gl_1d_map Map1Texture4;
1732    struct gl_1d_map Map1Attrib[16];  /**< GL_NV_vertex_program */
1733    /*@}*/
1734
1735    /**
1736     * \name 2-D maps
1737     */
1738    /*@{*/
1739    struct gl_2d_map Map2Vertex3;
1740    struct gl_2d_map Map2Vertex4;
1741    struct gl_2d_map Map2Index;
1742    struct gl_2d_map Map2Color4;
1743    struct gl_2d_map Map2Normal;
1744    struct gl_2d_map Map2Texture1;
1745    struct gl_2d_map Map2Texture2;
1746    struct gl_2d_map Map2Texture3;
1747    struct gl_2d_map Map2Texture4;
1748    struct gl_2d_map Map2Attrib[16];  /**< GL_NV_vertex_program */
1749    /*@}*/
1750 };
1751
1752
1753 /**
1754  * Names of the various vertex/fragment program register files, etc.
1755  *
1756  * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1757  * All values should fit in a 4-bit field.
1758  *
1759  * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1760  * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1761  * be "uniform" variables since they can only be set outside glBegin/End.
1762  * They're also all stored in the same Parameters array.
1763  */
1764 typedef enum
1765 {
1766    PROGRAM_TEMPORARY,   /**< machine->Temporary[] */
1767    PROGRAM_INPUT,       /**< machine->Inputs[] */
1768    PROGRAM_OUTPUT,      /**< machine->Outputs[] */
1769    PROGRAM_VARYING,     /**< machine->Inputs[]/Outputs[] */
1770    PROGRAM_LOCAL_PARAM, /**< gl_program->LocalParams[] */
1771    PROGRAM_ENV_PARAM,   /**< gl_program->Parameters[] */
1772    PROGRAM_STATE_VAR,   /**< gl_program->Parameters[] */
1773    PROGRAM_NAMED_PARAM, /**< gl_program->Parameters[] */
1774    PROGRAM_CONSTANT,    /**< gl_program->Parameters[] */
1775    PROGRAM_UNIFORM,     /**< gl_program->Parameters[] */
1776    PROGRAM_WRITE_ONLY,  /**< A dummy, write-only register */
1777    PROGRAM_ADDRESS,     /**< machine->AddressReg */
1778    PROGRAM_SAMPLER,     /**< for shader samplers, compile-time only */
1779    PROGRAM_SYSTEM_VALUE,/**< InstanceId, PrimitiveID, etc. */
1780    PROGRAM_UNDEFINED,   /**< Invalid/TBD value */
1781    PROGRAM_FILE_MAX
1782 } gl_register_file;
1783
1784
1785 /**
1786  * If the register file is PROGRAM_SYSTEM_VALUE, the register index will be
1787  * one of these values.
1788  */
1789 typedef enum
1790 {
1791    SYSTEM_VALUE_FRONT_FACE,  /**< Fragment shader only (not done yet) */
1792    SYSTEM_VALUE_INSTANCE_ID, /**< Vertex shader only */
1793    SYSTEM_VALUE_MAX          /**< Number of values */
1794 } gl_system_value;
1795
1796
1797 /** Vertex and fragment instructions */
1798 struct prog_instruction;
1799 struct gl_program_parameter_list;
1800 struct gl_uniform_list;
1801
1802
1803 /**
1804  * Base class for any kind of program object
1805  */
1806 struct gl_program
1807 {
1808    GLuint Id;
1809    GLubyte *String;  /**< Null-terminated program text */
1810    GLint RefCount;
1811    GLenum Target;    /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1812    GLenum Format;    /**< String encoding format */
1813    GLboolean Resident;
1814
1815    struct prog_instruction *Instructions;
1816
1817    GLbitfield InputsRead;     /**< Bitmask of which input regs are read */
1818    GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
1819    GLbitfield SystemValuesRead;   /**< Bitmask of SYSTEM_VALUE_x inputs used */
1820    GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */
1821    GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
1822    GLbitfield TexturesUsed[MAX_COMBINED_TEXTURE_IMAGE_UNITS];  /**< TEXTURE_x_BIT bitmask */
1823    GLbitfield SamplersUsed;   /**< Bitfield of which samplers are used */
1824    GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
1825
1826
1827    /** Named parameters, constants, etc. from program text */
1828    struct gl_program_parameter_list *Parameters;
1829    /** Numbered local parameters */
1830    GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
1831
1832    /** Map from sampler unit to texture unit (set by glUniform1i()) */
1833    GLubyte SamplerUnits[MAX_SAMPLERS];
1834    /** Which texture target is being sampled (TEXTURE_1D/2D/3D/etc_INDEX) */
1835    gl_texture_index SamplerTargets[MAX_SAMPLERS];
1836
1837    /** Bitmask of which register files are read/written with indirect
1838     * addressing.  Mask of (1 << PROGRAM_x) bits.
1839     */
1840    GLbitfield IndirectRegisterFiles;
1841
1842    /** Logical counts */
1843    /*@{*/
1844    GLuint NumInstructions;
1845    GLuint NumTemporaries;
1846    GLuint NumParameters;
1847    GLuint NumAttributes;
1848    GLuint NumAddressRegs;
1849    GLuint NumAluInstructions;
1850    GLuint NumTexInstructions;
1851    GLuint NumTexIndirections;
1852    /*@}*/
1853    /** Native, actual h/w counts */
1854    /*@{*/
1855    GLuint NumNativeInstructions;
1856    GLuint NumNativeTemporaries;
1857    GLuint NumNativeParameters;
1858    GLuint NumNativeAttributes;
1859    GLuint NumNativeAddressRegs;
1860    GLuint NumNativeAluInstructions;
1861    GLuint NumNativeTexInstructions;
1862    GLuint NumNativeTexIndirections;
1863    /*@}*/
1864 };
1865
1866
1867 /** Vertex program object */
1868 struct gl_vertex_program
1869 {
1870    struct gl_program Base;   /**< base class */
1871    GLboolean IsNVProgram;    /**< is this a GL_NV_vertex_program program? */
1872    GLboolean IsPositionInvariant;
1873    GLboolean UsesClipDistance;
1874 };
1875
1876
1877 /** Geometry program object */
1878 struct gl_geometry_program
1879 {
1880    struct gl_program Base;   /**< base class */
1881
1882    GLint VerticesOut;
1883    GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
1884                            GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
1885    GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
1886 };
1887
1888
1889 /** Fragment program object */
1890 struct gl_fragment_program
1891 {
1892    struct gl_program Base;   /**< base class */
1893    GLboolean UsesKill;          /**< shader uses KIL instruction */
1894    GLboolean OriginUpperLeft;
1895    GLboolean PixelCenterInteger;
1896    enum gl_frag_depth_layout FragDepthLayout;
1897 };
1898
1899
1900 /**
1901  * State common to vertex and fragment programs.
1902  */
1903 struct gl_program_state
1904 {
1905    GLint ErrorPos;                       /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1906    const char *ErrorString;              /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1907 };
1908
1909
1910 /**
1911  * Context state for vertex programs.
1912  */
1913 struct gl_vertex_program_state
1914 {
1915    GLboolean Enabled;            /**< User-set GL_VERTEX_PROGRAM_ARB/NV flag */
1916    GLboolean _Enabled;           /**< Enabled and _valid_ user program? */
1917    GLboolean PointSizeEnabled;   /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1918    GLboolean TwoSideEnabled;     /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1919    /** Computed two sided lighting for fixed function/programs. */
1920    GLboolean _TwoSideEnabled;
1921    struct gl_vertex_program *Current;  /**< User-bound vertex program */
1922
1923    /** Currently enabled and valid vertex program (including internal
1924     * programs, user-defined vertex programs and GLSL vertex shaders).
1925     * This is the program we must use when rendering.
1926     */
1927    struct gl_vertex_program *_Current;
1928
1929    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1930
1931    /* For GL_NV_vertex_program only: */
1932    GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
1933    GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
1934
1935    /** Should fixed-function T&L be implemented with a vertex prog? */
1936    GLboolean _MaintainTnlProgram;
1937
1938    /** Program to emulate fixed-function T&L (see above) */
1939    struct gl_vertex_program *_TnlProgram;
1940
1941    /** Cache of fixed-function programs */
1942    struct gl_program_cache *Cache;
1943
1944    GLboolean _Overriden;
1945 };
1946
1947
1948 /**
1949  * Context state for geometry programs.
1950  */
1951 struct gl_geometry_program_state
1952 {
1953    GLboolean Enabled;               /**< GL_ARB_GEOMETRY_SHADER4 */
1954    GLboolean _Enabled;              /**< Enabled and valid program? */
1955    struct gl_geometry_program *Current;  /**< user-bound geometry program */
1956
1957    /** Currently enabled and valid program (including internal programs
1958     * and compiled shader programs).
1959     */
1960    struct gl_geometry_program *_Current;
1961
1962    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1963
1964    /** Cache of fixed-function programs */
1965    struct gl_program_cache *Cache;
1966 };
1967
1968 /**
1969  * Context state for fragment programs.
1970  */
1971 struct gl_fragment_program_state
1972 {
1973    GLboolean Enabled;     /**< User-set fragment program enable flag */
1974    GLboolean _Enabled;    /**< Enabled and _valid_ user program? */
1975    struct gl_fragment_program *Current;  /**< User-bound fragment program */
1976
1977    /** Currently enabled and valid fragment program (including internal
1978     * programs, user-defined fragment programs and GLSL fragment shaders).
1979     * This is the program we must use when rendering.
1980     */
1981    struct gl_fragment_program *_Current;
1982
1983    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1984
1985    /** Should fixed-function texturing be implemented with a fragment prog? */
1986    GLboolean _MaintainTexEnvProgram;
1987
1988    /** Program to emulate fixed-function texture env/combine (see above) */
1989    struct gl_fragment_program *_TexEnvProgram;
1990
1991    /** Cache of fixed-function programs */
1992    struct gl_program_cache *Cache;
1993 };
1994
1995
1996 /**
1997  * ATI_fragment_shader runtime state
1998  */
1999 #define ATI_FS_INPUT_PRIMARY 0
2000 #define ATI_FS_INPUT_SECONDARY 1
2001
2002 struct atifs_instruction;
2003 struct atifs_setupinst;
2004
2005 /**
2006  * ATI fragment shader
2007  */
2008 struct ati_fragment_shader
2009 {
2010    GLuint Id;
2011    GLint RefCount;
2012    struct atifs_instruction *Instructions[2];
2013    struct atifs_setupinst *SetupInst[2];
2014    GLfloat Constants[8][4];
2015    GLbitfield LocalConstDef;  /**< Indicates which constants have been set */
2016    GLubyte numArithInstr[2];
2017    GLubyte regsAssigned[2];
2018    GLubyte NumPasses;         /**< 1 or 2 */
2019    GLubyte cur_pass;
2020    GLubyte last_optype;
2021    GLboolean interpinp1;
2022    GLboolean isValid;
2023    GLuint swizzlerq;
2024 };
2025
2026 /**
2027  * Context state for GL_ATI_fragment_shader
2028  */
2029 struct gl_ati_fragment_shader_state
2030 {
2031    GLboolean Enabled;
2032    GLboolean _Enabled;                  /**< enabled and valid shader? */
2033    GLboolean Compiling;
2034    GLfloat GlobalConstants[8][4];
2035    struct ati_fragment_shader *Current;
2036 };
2037
2038
2039 /**
2040  * Occlusion/timer query object.
2041  */
2042 struct gl_query_object
2043 {
2044    GLenum Target;      /**< The query target, when active */
2045    GLuint Id;          /**< hash table ID/name */
2046    GLuint64EXT Result; /**< the counter */
2047    GLboolean Active;   /**< inside Begin/EndQuery */
2048    GLboolean Ready;    /**< result is ready? */
2049 };
2050
2051
2052 /**
2053  * Context state for query objects.
2054  */
2055 struct gl_query_state
2056 {
2057    struct _mesa_HashTable *QueryObjects;
2058    struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
2059    struct gl_query_object *CurrentTimerObject;     /* GL_EXT_timer_query */
2060
2061    /** GL_NV_conditional_render */
2062    struct gl_query_object *CondRenderQuery;
2063
2064    /** GL_EXT_transform_feedback */
2065    struct gl_query_object *PrimitivesGenerated;
2066    struct gl_query_object *PrimitivesWritten;
2067
2068    /** GL_ARB_timer_query */
2069    struct gl_query_object *TimeElapsed;
2070
2071    GLenum CondRenderMode;
2072 };
2073
2074
2075 /** Sync object state */
2076 struct gl_sync_object {
2077    struct simple_node link;
2078    GLenum Type;               /**< GL_SYNC_FENCE */
2079    GLuint Name;               /**< Fence name */
2080    GLint RefCount;            /**< Reference count */
2081    GLboolean DeletePending;   /**< Object was deleted while there were still
2082                                * live references (e.g., sync not yet finished)
2083                                */
2084    GLenum SyncCondition;
2085    GLbitfield Flags;          /**< Flags passed to glFenceSync */
2086    GLuint StatusFlag:1;       /**< Has the sync object been signaled? */
2087 };
2088
2089
2090 /** Set by #pragma directives */
2091 struct gl_sl_pragmas
2092 {
2093    GLboolean IgnoreOptimize;  /**< ignore #pragma optimize(on/off) ? */
2094    GLboolean IgnoreDebug;     /**< ignore #pragma debug(on/off) ? */
2095    GLboolean Optimize;  /**< defaults on */
2096    GLboolean Debug;     /**< defaults off */
2097 };
2098
2099
2100 /**
2101  * A GLSL vertex or fragment shader object.
2102  */
2103 struct gl_shader
2104 {
2105    GLenum Type;  /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER || GL_GEOMETRY_SHADER_ARB (first field!) */
2106    GLuint Name;  /**< AKA the handle */
2107    GLint RefCount;  /**< Reference count */
2108    GLboolean DeletePending;
2109    GLboolean CompileStatus;
2110    const GLchar *Source;  /**< Source code string */
2111    GLuint SourceChecksum;       /**< for debug/logging purposes */
2112    struct gl_program *Program;  /**< Post-compile assembly code */
2113    GLchar *InfoLog;
2114    struct gl_sl_pragmas Pragmas;
2115
2116    unsigned Version;       /**< GLSL version used for linking */
2117
2118    struct exec_list *ir;
2119    struct glsl_symbol_table *symbols;
2120
2121    /** Shaders containing built-in functions that are used for linking. */
2122    struct gl_shader *builtins_to_link[16];
2123    unsigned num_builtins_to_link;
2124 };
2125
2126
2127 /**
2128  * A GLSL program object.
2129  * Basically a linked collection of vertex and fragment shaders.
2130  */
2131 struct gl_shader_program
2132 {
2133    GLenum Type;  /**< Always GL_SHADER_PROGRAM (internal token) */
2134    GLuint Name;  /**< aka handle or ID */
2135    GLint RefCount;  /**< Reference count */
2136    GLboolean DeletePending;
2137
2138    /**
2139     * Flags that the linker should not reject the program if it lacks
2140     * a vertex or fragment shader.  GLES2 doesn't allow separate
2141     * shader objects, and would reject them.  However, we internally
2142     * build separate shader objects for fixed function programs, which
2143     * we use for drivers/common/meta.c and for handling
2144     * _mesa_update_state with no program bound (for example in
2145     * glClear()).
2146     */
2147    GLboolean InternalSeparateShader;
2148
2149    GLuint NumShaders;          /**< number of attached shaders */
2150    struct gl_shader **Shaders; /**< List of attached the shaders */
2151
2152    /**
2153     * User-defined attribute bindings
2154     *
2155     * These are set via \c glBindAttribLocation and are used to direct the
2156     * GLSL linker.  These are \b not the values used in the compiled shader,
2157     * and they are \b not the values returned by \c glGetAttribLocation.
2158     */
2159    struct string_to_uint_map *AttributeBindings;
2160
2161    /** Transform feedback varyings */
2162    struct {
2163       GLenum BufferMode;
2164       GLuint NumVarying;
2165       GLchar **VaryingNames;  /**< Array [NumVarying] of char * */
2166    } TransformFeedback;
2167
2168    /** Geometry shader state - copied into gl_geometry_program at link time */
2169    struct {
2170       GLint VerticesOut;
2171       GLenum InputType;  /**< GL_POINTS, GL_LINES, GL_LINES_ADJACENCY_ARB,
2172                               GL_TRIANGLES, or GL_TRIANGLES_ADJACENCY_ARB */
2173       GLenum OutputType; /**< GL_POINTS, GL_LINE_STRIP or GL_TRIANGLE_STRIP */
2174    } Geom;
2175
2176    /** Vertex shader state - copied into gl_vertex_program at link time */
2177    struct {
2178       GLboolean UsesClipDistance; /**< True if gl_ClipDistance is written to. */
2179    } Vert;
2180
2181    /* post-link info: */
2182    struct gl_uniform_list *Uniforms;
2183    struct gl_program_parameter_list *Varying;
2184    GLboolean LinkStatus;   /**< GL_LINK_STATUS */
2185    GLboolean Validated;
2186    GLboolean _Used;        /**< Ever used for drawing? */
2187    GLchar *InfoLog;
2188
2189    unsigned Version;       /**< GLSL version used for linking */
2190
2191    /**
2192     * Per-stage shaders resulting from the first stage of linking.
2193     *
2194     * Set of linked shaders for this program.  The array is accessed using the
2195     * \c MESA_SHADER_* defines.  Entries for non-existent stages will be
2196     * \c NULL.
2197     */
2198    struct gl_shader *_LinkedShaders[MESA_SHADER_TYPES];
2199 };
2200
2201
2202 #define GLSL_DUMP      0x1  /**< Dump shaders to stdout */
2203 #define GLSL_LOG       0x2  /**< Write shaders to files */
2204 #define GLSL_OPT       0x4  /**< Force optimizations (override pragmas) */
2205 #define GLSL_NO_OPT    0x8  /**< Force no optimizations (override pragmas) */
2206 #define GLSL_UNIFORMS 0x10  /**< Print glUniform calls */
2207 #define GLSL_NOP_VERT 0x20  /**< Force no-op vertex shaders */
2208 #define GLSL_NOP_FRAG 0x40  /**< Force no-op fragment shaders */
2209 #define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */
2210
2211
2212 /**
2213  * Context state for GLSL vertex/fragment shaders.
2214  */
2215 struct gl_shader_state
2216 {
2217    /**
2218     * Programs used for rendering
2219     *
2220     * There is a separate program set for each shader stage.  If
2221     * GL_EXT_separate_shader_objects is not supported, each of these must point
2222     * to \c NULL or to the same program.
2223     */
2224    struct gl_shader_program *CurrentVertexProgram;
2225    struct gl_shader_program *CurrentGeometryProgram;
2226    struct gl_shader_program *CurrentFragmentProgram;
2227
2228    /**
2229     * Program used by glUniform calls.
2230     *
2231     * Explicitly set by \c glUseProgram and \c glActiveProgramEXT.
2232     */
2233    struct gl_shader_program *ActiveProgram;
2234
2235    GLbitfield Flags;                    /**< Mask of GLSL_x flags */
2236 };
2237
2238 /**
2239  * Compiler options for a single GLSL shaders type
2240  */
2241 struct gl_shader_compiler_options
2242 {
2243    /** Driver-selectable options: */
2244    GLboolean EmitCondCodes;             /**< Use condition codes? */
2245    GLboolean EmitNVTempInitialization;  /**< 0-fill NV temp registers */
2246    GLboolean EmitNoLoops;
2247    GLboolean EmitNoFunctions;
2248    GLboolean EmitNoCont;                  /**< Emit CONT opcode? */
2249    GLboolean EmitNoMainReturn;            /**< Emit CONT/RET opcodes? */
2250    GLboolean EmitNoNoise;                 /**< Emit NOISE opcodes? */
2251    GLboolean EmitNoPow;                   /**< Emit POW opcodes? */
2252    GLboolean LowerClipDistance; /**< Lower gl_ClipDistance from float[8] to vec4[2]? */
2253
2254    /**
2255     * \name Forms of indirect addressing the driver cannot do.
2256     */
2257    /*@{*/
2258    GLboolean EmitNoIndirectInput;   /**< No indirect addressing of inputs */
2259    GLboolean EmitNoIndirectOutput;  /**< No indirect addressing of outputs */
2260    GLboolean EmitNoIndirectTemp;    /**< No indirect addressing of temps */
2261    GLboolean EmitNoIndirectUniform; /**< No indirect addressing of constants */
2262    /*@}*/
2263
2264    GLuint MaxIfDepth;               /**< Maximum nested IF blocks */
2265    GLuint MaxUnrollIterations;
2266
2267    struct gl_sl_pragmas DefaultPragmas; /**< Default #pragma settings */
2268 };
2269
2270 /**
2271  * Transform feedback object state
2272  */
2273 struct gl_transform_feedback_object
2274 {
2275    GLuint Name;  /**< AKA the object ID */
2276    GLint RefCount;
2277    GLboolean Active;  /**< Is transform feedback enabled? */
2278    GLboolean Paused;  /**< Is transform feedback paused? */
2279
2280    /** The feedback buffers */
2281    GLuint BufferNames[MAX_FEEDBACK_ATTRIBS];
2282    struct gl_buffer_object *Buffers[MAX_FEEDBACK_ATTRIBS];
2283
2284    /** Start of feedback data in dest buffer */
2285    GLintptr Offset[MAX_FEEDBACK_ATTRIBS];
2286    /** Max data to put into dest buffer (in bytes) */
2287    GLsizeiptr Size[MAX_FEEDBACK_ATTRIBS];
2288 };
2289
2290
2291 /**
2292  * Context state for transform feedback.
2293  */
2294 struct gl_transform_feedback
2295 {
2296    GLenum Mode;       /**< GL_POINTS, GL_LINES or GL_TRIANGLES */
2297
2298    GLboolean RasterDiscard;  /**< GL_RASTERIZER_DISCARD */
2299
2300    /** The general binding point (GL_TRANSFORM_FEEDBACK_BUFFER) */
2301    struct gl_buffer_object *CurrentBuffer;
2302
2303    /** The table of all transform feedback objects */
2304    struct _mesa_HashTable *Objects;
2305
2306    /** The current xform-fb object (GL_TRANSFORM_FEEDBACK_BINDING) */
2307    struct gl_transform_feedback_object *CurrentObject;
2308
2309    /** The default xform-fb object (Name==0) */
2310    struct gl_transform_feedback_object *DefaultObject;
2311 };
2312
2313
2314
2315 /**
2316  * State which can be shared by multiple contexts:
2317  */
2318 struct gl_shared_state
2319 {
2320    _glthread_Mutex Mutex;                  /**< for thread safety */
2321    GLint RefCount;                         /**< Reference count */
2322    struct _mesa_HashTable *DisplayList;    /**< Display lists hash table */
2323    struct _mesa_HashTable *TexObjects;     /**< Texture objects hash table */
2324
2325    /** Default texture objects (shared by all texture units) */
2326    struct gl_texture_object *DefaultTex[NUM_TEXTURE_TARGETS];
2327
2328    /** Fallback texture used when a bound texture is incomplete */
2329    struct gl_texture_object *FallbackTex;
2330
2331    /**
2332     * \name Thread safety and statechange notification for texture
2333     * objects.
2334     *
2335     * \todo Improve the granularity of locking.
2336     */
2337    /*@{*/
2338    _glthread_Mutex TexMutex;            /**< texobj thread safety */
2339    GLuint TextureStateStamp;            /**< state notification for shared tex */
2340    /*@}*/
2341
2342    /** Default buffer object for vertex arrays that aren't in VBOs */
2343    struct gl_buffer_object *NullBufferObj;
2344
2345    /**
2346     * \name Vertex/geometry/fragment programs
2347     */
2348    /*@{*/
2349    struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2350    struct gl_vertex_program *DefaultVertexProgram;
2351    struct gl_fragment_program *DefaultFragmentProgram;
2352    struct gl_geometry_program *DefaultGeometryProgram;
2353    /*@}*/
2354
2355    /* GL_ATI_fragment_shader */
2356    struct _mesa_HashTable *ATIShaders;
2357    struct ati_fragment_shader *DefaultFragmentShader;
2358
2359    struct _mesa_HashTable *BufferObjects;
2360
2361    /** Table of both gl_shader and gl_shader_program objects */
2362    struct _mesa_HashTable *ShaderObjects;
2363
2364    /* GL_EXT_framebuffer_object */
2365    struct _mesa_HashTable *RenderBuffers;
2366    struct _mesa_HashTable *FrameBuffers;
2367
2368    /* GL_ARB_sync */
2369    struct simple_node SyncObjects;
2370
2371    /** GL_ARB_sampler_objects */
2372    struct _mesa_HashTable *SamplerObjects;
2373
2374    void *DriverData;  /**< Device driver shared state */
2375 };
2376
2377
2378
2379
2380 /**
2381  * A renderbuffer stores colors or depth values or stencil values.
2382  * A framebuffer object will have a collection of these.
2383  * Data are read/written to the buffer with a handful of Get/Put functions.
2384  *
2385  * Instances of this object are allocated with the Driver's NewRenderbuffer
2386  * hook.  Drivers will likely wrap this class inside a driver-specific
2387  * class to simulate inheritance.
2388  */
2389 struct gl_renderbuffer
2390 {
2391    _glthread_Mutex Mutex;                  /**< for thread safety */
2392    GLuint ClassID;        /**< Useful for drivers */
2393    GLuint Name;
2394    GLint RefCount;
2395    GLuint Width, Height;
2396    GLint RowStride;       /**< Padded width in units of pixels */
2397    GLboolean Purgeable;   /**< Is the buffer purgeable under memory pressure? */
2398
2399    GLboolean AttachedAnytime; /**< TRUE if it was attached to a framebuffer */
2400
2401    GLubyte NumSamples;
2402
2403    GLenum InternalFormat; /**< The user-specified format */
2404    GLenum _BaseFormat;    /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2405                                GL_STENCIL_INDEX. */
2406    gl_format Format;      /**< The actual renderbuffer memory format */
2407
2408    GLenum DataType;      /**< Type of values passed to the Get/Put functions */
2409    GLvoid *Data;        /**< This may not be used by some kinds of RBs */
2410
2411    /* Used to wrap one renderbuffer around another: */
2412    struct gl_renderbuffer *Wrapped;
2413
2414    /* Delete this renderbuffer */
2415    void (*Delete)(struct gl_renderbuffer *rb);
2416
2417    /* Allocate new storage for this renderbuffer */
2418    GLboolean (*AllocStorage)(struct gl_context *ctx, struct gl_renderbuffer *rb,
2419                              GLenum internalFormat,
2420                              GLuint width, GLuint height);
2421
2422    /* Lock/Unlock are called before/after calling the Get/Put functions.
2423     * Not sure this is the right place for these yet.
2424    void (*Lock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2425    void (*Unlock)(struct gl_context *ctx, struct gl_renderbuffer *rb);
2426     */
2427
2428    /* Return a pointer to the element/pixel at (x,y).
2429     * Should return NULL if the buffer memory can't be directly addressed.
2430     */
2431    void *(*GetPointer)(struct gl_context *ctx, struct gl_renderbuffer *rb,
2432                        GLint x, GLint y);
2433
2434    /* Get/Read a row of values.
2435     * The values will be of format _BaseFormat and type DataType.
2436     */
2437    void (*GetRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2438                   GLint x, GLint y, void *values);
2439
2440    /* Get/Read values at arbitrary locations.
2441     * The values will be of format _BaseFormat and type DataType.
2442     */
2443    void (*GetValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2444                      const GLint x[], const GLint y[], void *values);
2445
2446    /* Put/Write a row of values.
2447     * The values will be of format _BaseFormat and type DataType.
2448     */
2449    void (*PutRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2450                   GLint x, GLint y, const void *values, const GLubyte *mask);
2451
2452    /* Put/Write a row of RGB values.  This is a special-case routine that's
2453     * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2454     * a common case for glDrawPixels and some triangle routines.
2455     * The values will be of format GL_RGB and type DataType.
2456     */
2457    void (*PutRowRGB)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2458                     GLint x, GLint y, const void *values, const GLubyte *mask);
2459
2460
2461    /* Put/Write a row of identical values.
2462     * The values will be of format _BaseFormat and type DataType.
2463     */
2464    void (*PutMonoRow)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2465                      GLint x, GLint y, const void *value, const GLubyte *mask);
2466
2467    /* Put/Write values at arbitrary locations.
2468     * The values will be of format _BaseFormat and type DataType.
2469     */
2470    void (*PutValues)(struct gl_context *ctx, struct gl_renderbuffer *rb, GLuint count,
2471                      const GLint x[], const GLint y[], const void *values,
2472                      const GLubyte *mask);
2473    /* Put/Write identical values at arbitrary locations.
2474     * The values will be of format _BaseFormat and type DataType.
2475     */
2476    void (*PutMonoValues)(struct gl_context *ctx, struct gl_renderbuffer *rb,
2477                          GLuint count, const GLint x[], const GLint y[],
2478                          const void *value, const GLubyte *mask);
2479 };
2480
2481
2482 /**
2483  * A renderbuffer attachment points to either a texture object (and specifies
2484  * a mipmap level, cube face or 3D texture slice) or points to a renderbuffer.
2485  */
2486 struct gl_renderbuffer_attachment
2487 {
2488    GLenum Type;  /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2489    GLboolean Complete;
2490
2491    /**
2492     * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2493     * application supplied renderbuffer object.
2494     */
2495    struct gl_renderbuffer *Renderbuffer;
2496
2497    /**
2498     * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2499     * supplied texture object.
2500     */
2501    struct gl_texture_object *Texture;
2502    GLuint TextureLevel; /**< Attached mipmap level. */
2503    GLuint CubeMapFace;  /**< 0 .. 5, for cube map textures. */
2504    GLuint Zoffset;      /**< Slice for 3D textures,  or layer for both 1D
2505                          * and 2D array textures */
2506 };
2507
2508
2509 /**
2510  * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2511  * In C++ terms, think of this as a base class from which device drivers
2512  * will make derived classes.
2513  */
2514 struct gl_framebuffer
2515 {
2516    _glthread_Mutex Mutex;  /**< for thread safety */
2517    /**
2518     * If zero, this is a window system framebuffer.  If non-zero, this
2519     * is a FBO framebuffer; note that for some devices (i.e. those with
2520     * a natural pixel coordinate system for FBOs that differs from the
2521     * OpenGL/Mesa coordinate system), this means that the viewport,
2522     * polygon face orientation, and polygon stipple will have to be inverted.
2523     */
2524    GLuint Name;
2525
2526    GLint RefCount;
2527    GLboolean DeletePending;
2528
2529    /**
2530     * The framebuffer's visual. Immutable if this is a window system buffer.
2531     * Computed from attachments if user-made FBO.
2532     */
2533    struct gl_config Visual;
2534
2535    GLboolean Initialized;
2536
2537    GLuint Width, Height;        /**< size of frame buffer in pixels */
2538
2539    /** \name  Drawing bounds (Intersection of buffer size and scissor box) */
2540    /*@{*/
2541    GLint _Xmin, _Xmax;  /**< inclusive */
2542    GLint _Ymin, _Ymax;  /**< exclusive */
2543    /*@}*/
2544
2545    /** \name  Derived Z buffer stuff */
2546    /*@{*/
2547    GLuint _DepthMax;    /**< Max depth buffer value */
2548    GLfloat _DepthMaxF;  /**< Float max depth buffer value */
2549    GLfloat _MRD;        /**< minimum resolvable difference in Z values */
2550    /*@}*/
2551
2552    /** One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2553    GLenum _Status;
2554
2555    /** Integer color values */
2556    GLboolean _IntegerColor;
2557
2558    /** Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2559    struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
2560
2561    /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2562     * attribute group and GL_PIXEL attribute group, respectively.
2563     */
2564    GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
2565    GLenum ColorReadBuffer;
2566
2567    /** Computed from ColorDraw/ReadBuffer above */
2568    GLuint _NumColorDrawBuffers;
2569    GLint _ColorDrawBufferIndexes[MAX_DRAW_BUFFERS]; /**< BUFFER_x or -1 */
2570    GLint _ColorReadBufferIndex; /* -1 = None */
2571    struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS];
2572    struct gl_renderbuffer *_ColorReadBuffer;
2573
2574    /** The Actual depth/stencil buffers to use.  May be wrappers around the
2575     * depth/stencil buffers attached above. */
2576    struct gl_renderbuffer *_DepthBuffer;
2577    struct gl_renderbuffer *_StencilBuffer;
2578
2579    /** Delete this framebuffer */
2580    void (*Delete)(struct gl_framebuffer *fb);
2581 };
2582
2583
2584 /**
2585  * Precision info for shader datatypes.  See glGetShaderPrecisionFormat().
2586  */
2587 struct gl_precision
2588 {
2589    GLushort RangeMin;   /**< min value exponent */
2590    GLushort RangeMax;   /**< max value exponent */
2591    GLushort Precision;  /**< number of mantissa bits */
2592 };
2593
2594
2595 /**
2596  * Limits for vertex, geometry and fragment programs/shaders.
2597  */
2598 struct gl_program_constants
2599 {
2600    /* logical limits */
2601    GLuint MaxInstructions;
2602    GLuint MaxAluInstructions;
2603    GLuint MaxTexInstructions;
2604    GLuint MaxTexIndirections;
2605    GLuint MaxAttribs;
2606    GLuint MaxTemps;
2607    GLuint MaxAddressRegs;
2608    GLuint MaxAddressOffset;  /**< [-MaxAddressOffset, MaxAddressOffset-1] */
2609    GLuint MaxParameters;
2610    GLuint MaxLocalParams;
2611    GLuint MaxEnvParams;
2612    /* native/hardware limits */
2613    GLuint MaxNativeInstructions;
2614    GLuint MaxNativeAluInstructions;
2615    GLuint MaxNativeTexInstructions;
2616    GLuint MaxNativeTexIndirections;
2617    GLuint MaxNativeAttribs;
2618    GLuint MaxNativeTemps;
2619    GLuint MaxNativeAddressRegs;
2620    GLuint MaxNativeParameters;
2621    /* For shaders */
2622    GLuint MaxUniformComponents;  /**< Usually == MaxParameters * 4 */
2623    /* ES 2.0 and GL_ARB_ES2_compatibility */
2624    struct gl_precision LowFloat, MediumFloat, HighFloat;
2625    struct gl_precision LowInt, MediumInt, HighInt;
2626 };
2627
2628
2629 /**
2630  * Constants which may be overridden by device driver during context creation
2631  * but are never changed after that.
2632  */
2633 struct gl_constants
2634 {
2635    GLint MaxTextureMbytes;      /**< Max memory per image, in MB */
2636    GLint MaxTextureLevels;      /**< Max mipmap levels. */
2637    GLint Max3DTextureLevels;    /**< Max mipmap levels for 3D textures */
2638    GLint MaxCubeTextureLevels;  /**< Max mipmap levels for cube textures */
2639    GLint MaxArrayTextureLayers; /**< Max layers in array textures */
2640    GLint MaxTextureRectSize;    /**< Max rectangle texture size, in pixes */
2641    GLuint MaxTextureCoordUnits;
2642    GLuint MaxTextureImageUnits;
2643    GLuint MaxVertexTextureImageUnits;
2644    GLuint MaxCombinedTextureImageUnits;
2645    GLuint MaxGeometryTextureImageUnits;
2646    GLuint MaxTextureUnits;           /**< = MIN(CoordUnits, ImageUnits) */
2647    GLfloat MaxTextureMaxAnisotropy;  /**< GL_EXT_texture_filter_anisotropic */
2648    GLfloat MaxTextureLodBias;        /**< GL_EXT_texture_lod_bias */
2649    GLuint MaxTextureBufferSize;      /**< GL_ARB_texture_buffer_object */
2650
2651    GLuint MaxArrayLockSize;
2652
2653    GLint SubPixelBits;
2654
2655    GLfloat MinPointSize, MaxPointSize;       /**< aliased */
2656    GLfloat MinPointSizeAA, MaxPointSizeAA;   /**< antialiased */
2657    GLfloat PointSizeGranularity;
2658    GLfloat MinLineWidth, MaxLineWidth;       /**< aliased */
2659    GLfloat MinLineWidthAA, MaxLineWidthAA;   /**< antialiased */
2660    GLfloat LineWidthGranularity;
2661
2662    GLuint MaxColorTableSize;
2663
2664    GLuint MaxClipPlanes;
2665    GLuint MaxLights;
2666    GLfloat MaxShininess;                     /**< GL_NV_light_max_exponent */
2667    GLfloat MaxSpotExponent;                  /**< GL_NV_light_max_exponent */
2668
2669    GLuint MaxViewportWidth, MaxViewportHeight;
2670
2671    struct gl_program_constants VertexProgram;   /**< GL_ARB_vertex_program */
2672    struct gl_program_constants FragmentProgram; /**< GL_ARB_fragment_program */
2673    struct gl_program_constants GeometryProgram;  /**< GL_ARB_geometry_shader4 */
2674    GLuint MaxProgramMatrices;
2675    GLuint MaxProgramMatrixStackDepth;
2676
2677    /** vertex array / buffer object bounds checking */
2678    GLboolean CheckArrayBounds;
2679
2680    GLuint MaxDrawBuffers;    /**< GL_ARB_draw_buffers */
2681
2682    GLuint MaxColorAttachments;   /**< GL_EXT_framebuffer_object */
2683    GLuint MaxRenderbufferSize;   /**< GL_EXT_framebuffer_object */
2684    GLuint MaxSamples;            /**< GL_ARB_framebuffer_object */
2685
2686    /** Number of varying vectors between vertex and fragment shaders */
2687    GLuint MaxVarying;
2688    GLuint MaxVertexVaryingComponents;   /**< Between vert and geom shader */
2689    GLuint MaxGeometryVaryingComponents; /**< Between geom and frag shader */
2690
2691    /** GL_ARB_geometry_shader4 */
2692    GLuint MaxGeometryOutputVertices;
2693    GLuint MaxGeometryTotalOutputComponents;
2694
2695    GLuint GLSLVersion;  /**< GLSL version supported (ex: 120 = 1.20) */
2696
2697    /**
2698     * Does the driver support real 32-bit integers?  (Otherwise, integers are
2699     * simulated via floats.)
2700     */
2701    GLboolean NativeIntegers;
2702
2703    /**
2704     * If the driver supports real 32-bit integers, what integer value should be
2705     * used for boolean true in uniform uploads?  (Usually 1 or ~0.)
2706     */
2707    GLuint UniformBooleanTrue;
2708
2709    /** Which texture units support GL_ATI_envmap_bumpmap as targets */
2710    GLbitfield SupportedBumpUnits;
2711
2712    /**
2713     * Maximum amount of time, measured in nanseconds, that the server can wait.
2714     */
2715    GLuint64 MaxServerWaitTimeout;
2716
2717    /** GL_EXT_provoking_vertex */
2718    GLboolean QuadsFollowProvokingVertexConvention;
2719
2720    /** OpenGL version 3.0 */
2721    GLbitfield ContextFlags;  /**< Ex: GL_CONTEXT_FLAG_FORWARD_COMPATIBLE_BIT */
2722
2723    /** OpenGL version 3.2 */
2724    GLbitfield ProfileMask;   /**< Mask of CONTEXT_x_PROFILE_BIT */
2725
2726    /** GL_EXT_transform_feedback */
2727    GLuint MaxTransformFeedbackSeparateAttribs;
2728    GLuint MaxTransformFeedbackSeparateComponents;
2729    GLuint MaxTransformFeedbackInterleavedComponents;
2730
2731    /** GL_EXT_gpu_shader4 */
2732    GLint MinProgramTexelOffset, MaxProgramTexelOffset;
2733
2734    /* GL_EXT_framebuffer_sRGB */
2735    GLboolean sRGBCapable; /* can enable sRGB blend/update on FBOs */
2736
2737    /* GL_ARB_robustness */
2738    GLenum ResetStrategy;
2739 };
2740
2741
2742 /**
2743  * Enable flag for each OpenGL extension.  Different device drivers will
2744  * enable different extensions at runtime.
2745  */
2746 struct gl_extensions
2747 {
2748    GLboolean dummy;  /* don't remove this! */
2749    GLboolean dummy_true;  /* Set true by _mesa_init_extensions(). */
2750    GLboolean dummy_false; /* Set false by _mesa_init_extensions(). */
2751    GLboolean ARB_ES2_compatibility;
2752    GLboolean ARB_blend_func_extended;
2753    GLboolean ARB_color_buffer_float;
2754    GLboolean ARB_copy_buffer;
2755    GLboolean ARB_depth_buffer_float;
2756    GLboolean ARB_depth_clamp;
2757    GLboolean ARB_depth_texture;
2758    GLboolean ARB_draw_buffers_blend;
2759    GLboolean ARB_draw_elements_base_vertex;
2760    GLboolean ARB_draw_instanced;
2761    GLboolean ARB_fragment_coord_conventions;
2762    GLboolean ARB_fragment_program;
2763    GLboolean ARB_fragment_program_shadow;
2764    GLboolean ARB_fragment_shader;
2765    GLboolean ARB_framebuffer_object;
2766    GLboolean ARB_explicit_attrib_location;
2767    GLboolean ARB_geometry_shader4;
2768    GLboolean ARB_half_float_pixel;
2769    GLboolean ARB_half_float_vertex;
2770    GLboolean ARB_instanced_arrays;
2771    GLboolean ARB_map_buffer_range;
2772    GLboolean ARB_occlusion_query;
2773    GLboolean ARB_occlusion_query2;
2774    GLboolean ARB_point_sprite;
2775    GLboolean ARB_sampler_objects;
2776    GLboolean ARB_seamless_cube_map;
2777    GLboolean ARB_shader_objects;
2778    GLboolean ARB_shader_stencil_export;
2779    GLboolean ARB_shader_texture_lod;
2780    GLboolean ARB_shading_language_100;
2781    GLboolean ARB_shadow;
2782    GLboolean ARB_shadow_ambient;
2783    GLboolean ARB_sync;
2784    GLboolean ARB_texture_border_clamp;
2785    GLboolean ARB_texture_buffer_object;
2786    GLboolean ARB_texture_compression_rgtc;
2787    GLboolean ARB_texture_cube_map;
2788    GLboolean ARB_texture_env_combine;
2789    GLboolean ARB_texture_env_crossbar;
2790    GLboolean ARB_texture_env_dot3;
2791    GLboolean ARB_texture_float;
2792    GLboolean ARB_texture_multisample;
2793    GLboolean ARB_texture_non_power_of_two;
2794    GLboolean ARB_texture_rg;
2795    GLboolean ARB_texture_rgb10_a2ui;
2796    GLboolean ARB_timer_query;
2797    GLboolean ARB_transform_feedback2;
2798    GLboolean ARB_transpose_matrix;
2799    GLboolean ARB_uniform_buffer_object;
2800    GLboolean ARB_vertex_array_object;
2801    GLboolean ARB_vertex_program;
2802    GLboolean ARB_vertex_shader;
2803    GLboolean ARB_vertex_type_2_10_10_10_rev;
2804    GLboolean ARB_window_pos;
2805    GLboolean EXT_blend_color;
2806    GLboolean EXT_blend_equation_separate;
2807    GLboolean EXT_blend_func_separate;
2808    GLboolean EXT_blend_minmax;
2809    GLboolean EXT_clip_volume_hint;
2810    GLboolean EXT_compiled_vertex_array;
2811    GLboolean EXT_depth_bounds_test;
2812    GLboolean EXT_draw_buffers2;
2813    GLboolean EXT_draw_range_elements;
2814    GLboolean EXT_fog_coord;
2815    GLboolean EXT_framebuffer_blit;
2816    GLboolean EXT_framebuffer_multisample;
2817    GLboolean EXT_framebuffer_object;
2818    GLboolean EXT_framebuffer_sRGB;
2819    GLboolean EXT_gpu_program_parameters;
2820    GLboolean EXT_gpu_shader4;
2821    GLboolean EXT_packed_depth_stencil;
2822    GLboolean EXT_packed_float;
2823    GLboolean EXT_packed_pixels;
2824    GLboolean EXT_pixel_buffer_object;
2825    GLboolean EXT_point_parameters;
2826    GLboolean EXT_provoking_vertex;
2827    GLboolean EXT_rescale_normal;
2828    GLboolean EXT_shadow_funcs;
2829    GLboolean EXT_secondary_color;
2830    GLboolean EXT_separate_shader_objects;
2831    GLboolean EXT_separate_specular_color;
2832    GLboolean EXT_stencil_two_side;
2833    GLboolean EXT_texture3D;
2834    GLboolean EXT_texture_array;
2835    GLboolean EXT_texture_compression_latc;
2836    GLboolean EXT_texture_compression_s3tc;
2837    GLboolean EXT_texture_env_dot3;
2838    GLboolean EXT_texture_filter_anisotropic;
2839    GLboolean EXT_texture_integer;
2840    GLboolean EXT_texture_mirror_clamp;
2841    GLboolean EXT_texture_shared_exponent;
2842    GLboolean EXT_texture_snorm;
2843    GLboolean EXT_texture_sRGB;
2844    GLboolean EXT_texture_sRGB_decode;
2845    GLboolean EXT_texture_swizzle;
2846    GLboolean EXT_transform_feedback;
2847    GLboolean EXT_timer_query;
2848    GLboolean EXT_vertex_array_bgra;
2849    GLboolean OES_standard_derivatives;
2850    /* vendor extensions */
2851    GLboolean AMD_conservative_depth;
2852    GLboolean AMD_seamless_cubemap_per_texture;
2853    GLboolean APPLE_packed_pixels;
2854    GLboolean APPLE_vertex_array_object;
2855    GLboolean APPLE_object_purgeable;
2856    GLboolean ATI_envmap_bumpmap;
2857    GLboolean ATI_texture_compression_3dc;
2858    GLboolean ATI_texture_mirror_once;
2859    GLboolean ATI_texture_env_combine3;
2860    GLboolean ATI_fragment_shader;
2861    GLboolean ATI_separate_stencil;
2862    GLboolean IBM_rasterpos_clip;
2863    GLboolean IBM_multimode_draw_arrays;
2864    GLboolean MESA_pack_invert;
2865    GLboolean MESA_resize_buffers;
2866    GLboolean MESA_ycbcr_texture;
2867    GLboolean MESA_texture_array;
2868    GLboolean NV_blend_square;
2869    GLboolean NV_conditional_render;
2870    GLboolean NV_fragment_program;
2871    GLboolean NV_fragment_program_option;
2872    GLboolean NV_light_max_exponent;
2873    GLboolean NV_point_sprite;
2874    GLboolean NV_primitive_restart;
2875    GLboolean NV_texture_barrier;
2876    GLboolean NV_texgen_reflection;
2877    GLboolean NV_texture_env_combine4;
2878    GLboolean NV_texture_rectangle;
2879    GLboolean NV_vertex_program;
2880    GLboolean NV_vertex_program1_1;
2881    GLboolean SGIS_texture_lod;
2882    GLboolean TDFX_texture_compression_FXT1;
2883    GLboolean S3_s3tc;
2884    GLboolean OES_EGL_image;
2885    GLboolean OES_draw_texture;
2886    GLboolean extension_sentinel;
2887    /** The extension string */
2888    const GLubyte *String;
2889    /** Number of supported extensions */
2890    GLuint Count;
2891 };
2892
2893
2894 /**
2895  * A stack of matrices (projection, modelview, color, texture, etc).
2896  */
2897 struct gl_matrix_stack
2898 {
2899    GLmatrix *Top;      /**< points into Stack */
2900    GLmatrix *Stack;    /**< array [MaxDepth] of GLmatrix */
2901    GLuint Depth;       /**< 0 <= Depth < MaxDepth */
2902    GLuint MaxDepth;    /**< size of Stack[] array */
2903    GLuint DirtyFlag;   /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2904 };
2905
2906
2907 /**
2908  * \name Bits for image transfer operations
2909  * \sa __struct gl_contextRec::ImageTransferState.
2910  */
2911 /*@{*/
2912 #define IMAGE_SCALE_BIAS_BIT                      0x1
2913 #define IMAGE_SHIFT_OFFSET_BIT                    0x2
2914 #define IMAGE_MAP_COLOR_BIT                       0x4
2915 #define IMAGE_CLAMP_BIT                           0x800
2916
2917
2918 /** Pixel Transfer ops */
2919 #define IMAGE_BITS (IMAGE_SCALE_BIAS_BIT |                      \
2920                     IMAGE_SHIFT_OFFSET_BIT |                    \
2921                     IMAGE_MAP_COLOR_BIT)
2922
2923 /**
2924  * \name Bits to indicate what state has changed.
2925  */
2926 /*@{*/
2927 #define _NEW_MODELVIEW         (1 << 0)   /**< gl_context::ModelView */
2928 #define _NEW_PROJECTION        (1 << 1)   /**< gl_context::Projection */
2929 #define _NEW_TEXTURE_MATRIX    (1 << 2)   /**< gl_context::TextureMatrix */
2930 #define _NEW_COLOR             (1 << 3)   /**< gl_context::Color */
2931 #define _NEW_DEPTH             (1 << 4)   /**< gl_context::Depth */
2932 #define _NEW_EVAL              (1 << 5)   /**< gl_context::Eval, EvalMap */
2933 #define _NEW_FOG               (1 << 6)   /**< gl_context::Fog */
2934 #define _NEW_HINT              (1 << 7)   /**< gl_context::Hint */
2935 #define _NEW_LIGHT             (1 << 8)   /**< gl_context::Light */
2936 #define _NEW_LINE              (1 << 9)   /**< gl_context::Line */
2937 #define _NEW_PIXEL             (1 << 10)  /**< gl_context::Pixel */
2938 #define _NEW_POINT             (1 << 11)  /**< gl_context::Point */
2939 #define _NEW_POLYGON           (1 << 12)  /**< gl_context::Polygon */
2940 #define _NEW_POLYGONSTIPPLE    (1 << 13)  /**< gl_context::PolygonStipple */
2941 #define _NEW_SCISSOR           (1 << 14)  /**< gl_context::Scissor */
2942 #define _NEW_STENCIL           (1 << 15)  /**< gl_context::Stencil */
2943 #define _NEW_TEXTURE           (1 << 16)  /**< gl_context::Texture */
2944 #define _NEW_TRANSFORM         (1 << 17)  /**< gl_context::Transform */
2945 #define _NEW_VIEWPORT          (1 << 18)  /**< gl_context::Viewport */
2946 #define _NEW_PACKUNPACK        (1 << 19)  /**< gl_context::Pack, Unpack */
2947 #define _NEW_ARRAY             (1 << 20)  /**< gl_context::Array */
2948 #define _NEW_RENDERMODE        (1 << 21)  /**< gl_context::RenderMode, etc */
2949 #define _NEW_BUFFERS           (1 << 22)  /**< gl_context::Visual, DrawBuffer, */
2950 #define _NEW_CURRENT_ATTRIB    (1 << 23)  /**< gl_context::Current */
2951 #define _NEW_MULTISAMPLE       (1 << 24)  /**< gl_context::Multisample */
2952 #define _NEW_TRACK_MATRIX      (1 << 25)  /**< gl_context::VertexProgram */
2953 #define _NEW_PROGRAM           (1 << 26)  /**< New program/shader state */
2954 #define _NEW_PROGRAM_CONSTANTS (1 << 27)
2955 #define _NEW_BUFFER_OBJECT     (1 << 28)
2956 #define _NEW_FRAG_CLAMP        (1 << 29)
2957 #define _NEW_ALL ~0
2958 /*@}*/
2959
2960
2961 /**
2962  * \name Bits to track array state changes
2963  *
2964  * Also used to summarize array enabled.
2965  */
2966 /*@{*/
2967 #define _NEW_ARRAY_VERTEX           VERT_BIT_POS
2968 #define _NEW_ARRAY_WEIGHT           VERT_BIT_WEIGHT
2969 #define _NEW_ARRAY_NORMAL           VERT_BIT_NORMAL
2970 #define _NEW_ARRAY_COLOR0           VERT_BIT_COLOR0
2971 #define _NEW_ARRAY_COLOR1           VERT_BIT_COLOR1
2972 #define _NEW_ARRAY_FOGCOORD         VERT_BIT_FOG
2973 #define _NEW_ARRAY_INDEX            VERT_BIT_COLOR_INDEX
2974 #define _NEW_ARRAY_EDGEFLAG         VERT_BIT_EDGEFLAG
2975 #define _NEW_ARRAY_POINT_SIZE       VERT_BIT_COLOR_INDEX  /* aliased */
2976 #define _NEW_ARRAY_TEXCOORD_0       VERT_BIT_TEX0
2977 #define _NEW_ARRAY_TEXCOORD_1       VERT_BIT_TEX1
2978 #define _NEW_ARRAY_TEXCOORD_2       VERT_BIT_TEX2
2979 #define _NEW_ARRAY_TEXCOORD_3       VERT_BIT_TEX3
2980 #define _NEW_ARRAY_TEXCOORD_4       VERT_BIT_TEX4
2981 #define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5
2982 #define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6
2983 #define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7
2984 #define _NEW_ARRAY_ATTRIB_0         VERT_BIT_GENERIC0  /* start at bit 16 */
2985 #define _NEW_ARRAY_ALL              0xffffffff
2986
2987
2988 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2989 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2990 /*@}*/
2991
2992
2993
2994 /**
2995  * \name A bunch of flags that we think might be useful to drivers.
2996  *
2997  * Set in the __struct gl_contextRec::_TriangleCaps bitfield.
2998  */
2999 /*@{*/
3000 #define DD_FLATSHADE                0x1
3001 #define DD_SEPARATE_SPECULAR        0x2
3002 #define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
3003 #define DD_TRI_LIGHT_TWOSIDE        0x8
3004 #define DD_TRI_UNFILLED             0x10
3005 #define DD_TRI_SMOOTH               0x20
3006 #define DD_TRI_STIPPLE              0x40
3007 #define DD_TRI_OFFSET               0x80
3008 #define DD_LINE_SMOOTH              0x100
3009 #define DD_LINE_STIPPLE             0x200
3010 #define DD_POINT_SMOOTH             0x400
3011 #define DD_POINT_ATTEN              0x800
3012 #define DD_TRI_TWOSTENCIL           0x1000
3013 /*@}*/
3014
3015
3016 /**
3017  * \name Define the state changes under which each of these bits might change
3018  */
3019 /*@{*/
3020 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
3021 #define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
3022 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
3023 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
3024 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
3025 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
3026 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
3027 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
3028 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
3029 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
3030 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
3031 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
3032 #define _DD_NEW_POINT_SIZE               _NEW_POINT
3033 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
3034 /*@}*/
3035
3036
3037 /**
3038  * Composite state flags
3039  */
3040 /*@{*/
3041 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |         \
3042                                            _NEW_TEXTURE |       \
3043                                            _NEW_POINT |         \
3044                                            _NEW_PROGRAM |       \
3045                                            _NEW_MODELVIEW)
3046 /*@}*/
3047
3048
3049
3050
3051 /* This has to be included here. */
3052 #include "dd.h"
3053
3054
3055 /**
3056  * Display list flags.
3057  * Strictly this is a tnl-private concept, but it doesn't seem
3058  * worthwhile adding a tnl private structure just to hold this one bit
3059  * of information:
3060  */
3061 #define DLIST_DANGLING_REFS     0x1
3062
3063
3064 /** Opaque declaration of display list payload data type */
3065 union gl_dlist_node;
3066
3067
3068 /**
3069  * Provide a location where information about a display list can be
3070  * collected.  Could be extended with driverPrivate structures,
3071  * etc. in the future.
3072  */
3073 struct gl_display_list
3074 {
3075    GLuint Name;
3076    GLbitfield Flags;  /**< DLIST_x flags */
3077    /** The dlist commands are in a linked list of nodes */
3078    union gl_dlist_node *Head;
3079 };
3080
3081
3082 /**
3083  * State used during display list compilation and execution.
3084  */
3085 struct gl_dlist_state
3086 {
3087    GLuint CallDepth;            /**< Current recursion calling depth */
3088
3089    struct gl_display_list *CurrentList; /**< List currently being compiled */
3090    union gl_dlist_node *CurrentBlock; /**< Pointer to current block of nodes */
3091    GLuint CurrentPos;           /**< Index into current block of nodes */
3092
3093    GLvertexformat ListVtxfmt;
3094
3095    GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
3096    GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
3097
3098    GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
3099    GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
3100
3101    GLubyte ActiveIndex;
3102    GLfloat CurrentIndex;
3103
3104    GLubyte ActiveEdgeFlag;
3105    GLboolean CurrentEdgeFlag;
3106
3107    struct {
3108       /* State known to have been set by the currently-compiling display
3109        * list.  Used to eliminate some redundant state changes.
3110        */
3111       GLenum ShadeModel;
3112    } Current;
3113 };
3114
3115
3116 /**
3117  * Enum for the OpenGL APIs we know about and may support.
3118  */
3119 typedef enum
3120 {
3121    API_OPENGL,
3122    API_OPENGLES,
3123    API_OPENGLES2
3124 } gl_api;
3125
3126
3127 /**
3128  * Mesa rendering context.
3129  *
3130  * This is the central context data structure for Mesa.  Almost all
3131  * OpenGL state is contained in this structure.
3132  * Think of this as a base class from which device drivers will derive
3133  * sub classes.
3134  *
3135  * The struct gl_context typedef names this structure.
3136  */
3137 struct gl_context
3138 {
3139    /** State possibly shared with other contexts in the address space */
3140    struct gl_shared_state *Shared;
3141
3142    /** \name API function pointer tables */
3143    /*@{*/
3144    gl_api API;
3145    struct _glapi_table *Save;   /**< Display list save functions */
3146    struct _glapi_table *Exec;   /**< Execute functions */
3147    struct _glapi_table *CurrentDispatch;  /**< == Save or Exec !! */
3148    /*@}*/
3149
3150    struct gl_config Visual;
3151    struct gl_framebuffer *DrawBuffer;   /**< buffer for writing */
3152    struct gl_framebuffer *ReadBuffer;   /**< buffer for reading */
3153    struct gl_framebuffer *WinSysDrawBuffer;  /**< set with MakeCurrent */
3154    struct gl_framebuffer *WinSysReadBuffer;  /**< set with MakeCurrent */
3155
3156    /**
3157     * Device driver function pointer table
3158     */
3159    struct dd_function_table Driver;
3160
3161    void *DriverCtx;     /**< Points to device driver context/state */
3162
3163    /** Core/Driver constants */
3164    struct gl_constants Const;
3165
3166    /** \name The various 4x4 matrix stacks */
3167    /*@{*/
3168    struct gl_matrix_stack ModelviewMatrixStack;
3169    struct gl_matrix_stack ProjectionMatrixStack;
3170    struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_UNITS];
3171    struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
3172    struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
3173    /*@}*/
3174
3175    /** Combined modelview and projection matrix */
3176    GLmatrix _ModelProjectMatrix;
3177
3178    /** \name Display lists */
3179    struct gl_dlist_state ListState;
3180
3181    GLboolean ExecuteFlag;       /**< Execute GL commands? */
3182    GLboolean CompileFlag;       /**< Compile GL commands into display list? */
3183
3184    /** Extension information */
3185    struct gl_extensions Extensions;
3186
3187    /** Version info */
3188    GLuint VersionMajor, VersionMinor;
3189    char *VersionString;
3190
3191    /** \name State attribute stack (for glPush/PopAttrib) */
3192    /*@{*/
3193    GLuint AttribStackDepth;
3194    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
3195    /*@}*/
3196
3197    /** \name Renderer attribute groups
3198     *
3199     * We define a struct for each attribute group to make pushing and popping
3200     * attributes easy.  Also it's a good organization.
3201     */
3202    /*@{*/
3203    struct gl_accum_attrib       Accum;          /**< Accum buffer attributes */
3204    struct gl_colorbuffer_attrib Color;          /**< Color buffer attributes */
3205    struct gl_current_attrib     Current;        /**< Current attributes */
3206    struct gl_depthbuffer_attrib Depth;          /**< Depth buffer attributes */
3207    struct gl_eval_attrib        Eval;           /**< Eval attributes */
3208    struct gl_fog_attrib         Fog;            /**< Fog attributes */
3209    struct gl_hint_attrib        Hint;           /**< Hint attributes */
3210    struct gl_light_attrib       Light;          /**< Light attributes */
3211    struct gl_line_attrib        Line;           /**< Line attributes */
3212    struct gl_list_attrib        List;           /**< List attributes */
3213    struct gl_multisample_attrib Multisample;
3214    struct gl_pixel_attrib       Pixel;          /**< Pixel attributes */
3215    struct gl_point_attrib       Point;          /**< Point attributes */
3216    struct gl_polygon_attrib     Polygon;        /**< Polygon attributes */
3217    GLuint PolygonStipple[32];                   /**< Polygon stipple */
3218    struct gl_scissor_attrib     Scissor;        /**< Scissor attributes */
3219    struct gl_stencil_attrib     Stencil;        /**< Stencil buffer attributes */
3220    struct gl_texture_attrib     Texture;        /**< Texture attributes */
3221    struct gl_transform_attrib   Transform;      /**< Transformation attributes */
3222    struct gl_viewport_attrib    Viewport;       /**< Viewport attributes */
3223    /*@}*/
3224
3225    /** \name Client attribute stack */
3226    /*@{*/
3227    GLuint ClientAttribStackDepth;
3228    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
3229    /*@}*/
3230
3231    /** \name Client attribute groups */
3232    /*@{*/
3233    struct gl_array_attrib       Array;  /**< Vertex arrays */
3234    struct gl_pixelstore_attrib  Pack;   /**< Pixel packing */
3235    struct gl_pixelstore_attrib  Unpack; /**< Pixel unpacking */
3236    struct gl_pixelstore_attrib  DefaultPacking; /**< Default params */
3237    /*@}*/
3238
3239    /** \name Other assorted state (not pushed/popped on attribute stack) */
3240    /*@{*/
3241    struct gl_pixelmaps          PixelMaps;
3242
3243    struct gl_evaluators EvalMap;   /**< All evaluators */
3244    struct gl_feedback   Feedback;  /**< Feedback */
3245    struct gl_selection  Select;    /**< Selection */
3246
3247    struct gl_program_state Program;  /**< general program state */
3248    struct gl_vertex_program_state VertexProgram;
3249    struct gl_fragment_program_state FragmentProgram;
3250    struct gl_geometry_program_state GeometryProgram;
3251    struct gl_ati_fragment_shader_state ATIFragmentShader;
3252
3253    struct gl_shader_state Shader; /**< GLSL shader object state */
3254    struct gl_shader_compiler_options ShaderCompilerOptions[MESA_SHADER_TYPES];
3255
3256    struct gl_query_state Query;  /**< occlusion, timer queries */
3257
3258    struct gl_transform_feedback TransformFeedback;
3259
3260    struct gl_buffer_object *CopyReadBuffer; /**< GL_ARB_copy_buffer */
3261    struct gl_buffer_object *CopyWriteBuffer; /**< GL_ARB_copy_buffer */
3262    /*@}*/
3263
3264    struct gl_meta_state *Meta;  /**< for "meta" operations */
3265
3266    /* GL_EXT_framebuffer_object */
3267    struct gl_renderbuffer *CurrentRenderbuffer;
3268
3269    GLenum ErrorValue;        /**< Last error code */
3270
3271    /* GL_ARB_robustness */
3272    GLenum ResetStatus;
3273
3274    /**
3275     * Recognize and silence repeated error debug messages in buggy apps.
3276     */
3277    const char *ErrorDebugFmtString;
3278    GLuint ErrorDebugCount;
3279
3280    GLenum RenderMode;        /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3281    GLbitfield NewState;      /**< bitwise-or of _NEW_* flags */
3282
3283    GLboolean ViewportInitialized;  /**< has viewport size been initialized? */
3284
3285    GLbitfield varying_vp_inputs;  /**< mask of VERT_BIT_* flags */
3286
3287    /** \name Derived state */
3288    /*@{*/
3289    /** Bitwise-or of DD_* flags.  Note that this bitfield may be used before
3290     * state validation so they need to always be current.
3291     */
3292    GLbitfield _TriangleCaps;
3293    GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
3294    GLfloat _EyeZDir[3];
3295    GLfloat _ModelViewInvScale;
3296    GLboolean _NeedEyeCoords;
3297    GLboolean _ForceEyeCoords;
3298
3299    GLuint TextureStateTimestamp; /**< detect changes to shared state */
3300
3301    struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
3302    struct gl_shine_tab *_ShineTabList;  /**< MRU list of inactive shine tables */
3303    /**@}*/
3304
3305    struct gl_list_extensions *ListExt; /**< driver dlist extensions */
3306
3307    /** \name For debugging/development only */
3308    /*@{*/
3309    GLboolean FirstTimeCurrent;
3310    /*@}*/
3311
3312    /** software compression/decompression supported or not */
3313    GLboolean Mesa_DXTn;
3314
3315    GLboolean TextureFormatSupported[MESA_FORMAT_COUNT];
3316
3317    /**
3318     * Use dp4 (rather than mul/mad) instructions for position
3319     * transformation?
3320     */
3321    GLboolean mvp_with_dp4;
3322
3323    /**
3324     * \name Hooks for module contexts.
3325     *
3326     * These will eventually live in the driver or elsewhere.
3327     */
3328    /*@{*/
3329    void *swrast_context;
3330    void *swsetup_context;
3331    void *swtnl_context;
3332    void *swtnl_im;
3333    struct st_context *st;
3334    void *aelt_context;
3335    /*@}*/
3336 };
3337
3338
3339 #ifdef DEBUG
3340 extern int MESA_VERBOSE;
3341 extern int MESA_DEBUG_FLAGS;
3342 # define MESA_FUNCTION __FUNCTION__
3343 #else
3344 # define MESA_VERBOSE 0
3345 # define MESA_DEBUG_FLAGS 0
3346 # define MESA_FUNCTION "a function"
3347 # ifndef NDEBUG
3348 #  define NDEBUG
3349 # endif
3350 #endif
3351
3352
3353 /** The MESA_VERBOSE var is a bitmask of these flags */
3354 enum _verbose
3355 {
3356    VERBOSE_VARRAY               = 0x0001,
3357    VERBOSE_TEXTURE              = 0x0002,
3358    VERBOSE_MATERIAL             = 0x0004,
3359    VERBOSE_PIPELINE             = 0x0008,
3360    VERBOSE_DRIVER               = 0x0010,
3361    VERBOSE_STATE                = 0x0020,
3362    VERBOSE_API                  = 0x0040,
3363    VERBOSE_DISPLAY_LIST         = 0x0100,
3364    VERBOSE_LIGHTING             = 0x0200,
3365    VERBOSE_PRIMS                = 0x0400,
3366    VERBOSE_VERTS                = 0x0800,
3367    VERBOSE_DISASSEM             = 0x1000,
3368    VERBOSE_DRAW                 = 0x2000,
3369    VERBOSE_SWAPBUFFERS          = 0x4000
3370 };
3371
3372
3373 /** The MESA_DEBUG_FLAGS var is a bitmask of these flags */
3374 enum _debug
3375 {
3376    DEBUG_ALWAYS_FLUSH           = 0x1
3377 };
3378
3379
3380
3381 #endif /* MTYPES_H */