src/mesa/main/mtypes.h

   1 /**
   2  * \file mtypes.h
   3  * Main Mesa data structures.
   4  *
   5  * Please try to mark derived values with a leading underscore ('_').
   6  */
   7
   8 /*
   9  * Mesa 3-D graphics library
  10  * Version:  6.5.3
  11  *
  12  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a
  15  * copy of this software and associated documentation files (the "Software"),
  16  * to deal in the Software without restriction, including without limitation
  17  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  18  * and/or sell copies of the Software, and to permit persons to whom the
  19  * Software is furnished to do so, subject to the following conditions:
  20  *
  21  * The above copyright notice and this permission notice shall be included
  22  * in all copies or substantial portions of the Software.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  25  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  27  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  28  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30  */
  31
  32
  33
  34 #ifndef TYPES_H
  35 #define TYPES_H
  36
  37
  38 #include "glheader.h"
  39 #include <GL/internal/glcore.h> /* __GLcontextModes (GLvisual) */
  40 #include "config.h"             /* Hardwired parameters */
  41 #include "glapi/glapitable.h"
  42 #include "glapi/glthread.h"
  43 #include "math/m_matrix.h"      /* GLmatrix */
  44 #include "bitset.h"
  45
  46
  47 /**
  48  * Special, internal token
  49  */
  50 #define GL_SHADER_PROGRAM_MESA 0x9999
  51
  52
  53 /**
  54  * Color channel data type.
  55  */
  56 #if CHAN_BITS == 8
  57    typedef GLubyte GLchan;
  58 #define CHAN_MAX 255
  59 #define CHAN_MAXF 255.0F
  60 #define CHAN_TYPE GL_UNSIGNED_BYTE
  61 #elif CHAN_BITS == 16
  62    typedef GLushort GLchan;
  63 #define CHAN_MAX 65535
  64 #define CHAN_MAXF 65535.0F
  65 #define CHAN_TYPE GL_UNSIGNED_SHORT
  66 #elif CHAN_BITS == 32
  67    typedef GLfloat GLchan;
  68 #define CHAN_MAX 1.0
  69 #define CHAN_MAXF 1.0F
  70 #define CHAN_TYPE GL_FLOAT
  71 #else
  72 #error "illegal number of color channel bits"
  73 #endif
  74
  75
  76 /**
  77  * Stencil buffer data type.
  78  */
  79 #if STENCIL_BITS==8
  80    typedef GLubyte GLstencil;
  81 #elif STENCIL_BITS==16
  82    typedef GLushort GLstencil;
  83 #else
  84 #  error "illegal number of stencil bits"
  85 #endif
  86
  87
  88 /**
  89  * Fixed point data type.
  90  */
  91 typedef int GLfixed;
  92 /*
  93  * Fixed point arithmetic macros
  94  */
  95 #ifndef FIXED_FRAC_BITS
  96 #define FIXED_FRAC_BITS 11
  97 #endif
  98
  99 #define FIXED_SHIFT     FIXED_FRAC_BITS
 100 #define FIXED_ONE       (1 << FIXED_SHIFT)
 101 #define FIXED_HALF      (1 << (FIXED_SHIFT-1))
 102 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
 103 #define FIXED_INT_MASK  (~FIXED_FRAC_MASK)
 104 #define FIXED_EPSILON   1
 105 #define FIXED_SCALE     ((float) FIXED_ONE)
 106 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
 107 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
 108 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
 109 #define IntToFixed(I)   ((I) << FIXED_SHIFT)
 110 #define FixedToInt(X)   ((X) >> FIXED_SHIFT)
 111 #define FixedToUns(X)   (((unsigned int)(X)) >> FIXED_SHIFT)
 112 #define FixedCeil(X)    (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
 113 #define FixedFloor(X)   ((X) & FIXED_INT_MASK)
 114 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
 115 #define PosFloatToFixed(X)      FloatToFixed(X)
 116 #define SignedFloatToFixed(X)   FloatToFixed(X)
 117
 118
 119
 120 /**
 121  * \name Some forward type declarations
 122  */
 123 /*@{*/
 124 struct _mesa_HashTable;
 125 struct gl_pixelstore_attrib;
 126 struct gl_texture_format;
 127 struct gl_texture_image;
 128 struct gl_texture_object;
 129 typedef struct __GLcontextRec GLcontext;
 130 typedef struct __GLcontextModesRec GLvisual;
 131 typedef struct gl_framebuffer GLframebuffer;
 132 /*@}*/
 133
 134
 135
 136 /**
 137  * Indexes for vertex program attributes.
 138  * GL_NV_vertex_program aliases generic attributes over the conventional
 139  * attributes.  In GL_ARB_vertex_program shader the aliasing is optional.
 140  * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
 141  * generic attributes are distinct/separate).
 142  */
 143 enum
 144 {
 145    VERT_ATTRIB_POS = 0,
 146    VERT_ATTRIB_WEIGHT = 1,
 147    VERT_ATTRIB_NORMAL = 2,
 148    VERT_ATTRIB_COLOR0 = 3,
 149    VERT_ATTRIB_COLOR1 = 4,
 150    VERT_ATTRIB_FOG = 5,
 151    VERT_ATTRIB_COLOR_INDEX = 6,
 152    VERT_ATTRIB_EDGEFLAG = 7,
 153    VERT_ATTRIB_TEX0 = 8,
 154    VERT_ATTRIB_TEX1 = 9,
 155    VERT_ATTRIB_TEX2 = 10,
 156    VERT_ATTRIB_TEX3 = 11,
 157    VERT_ATTRIB_TEX4 = 12,
 158    VERT_ATTRIB_TEX5 = 13,
 159    VERT_ATTRIB_TEX6 = 14,
 160    VERT_ATTRIB_TEX7 = 15,
 161    VERT_ATTRIB_GENERIC0 = 16,
 162    VERT_ATTRIB_GENERIC1 = 17,
 163    VERT_ATTRIB_GENERIC2 = 18,
 164    VERT_ATTRIB_GENERIC3 = 19,
 165    VERT_ATTRIB_GENERIC4 = 20,
 166    VERT_ATTRIB_GENERIC5 = 21,
 167    VERT_ATTRIB_GENERIC6 = 22,
 168    VERT_ATTRIB_GENERIC7 = 23,
 169    VERT_ATTRIB_GENERIC8 = 24,
 170    VERT_ATTRIB_GENERIC9 = 25,
 171    VERT_ATTRIB_GENERIC10 = 26,
 172    VERT_ATTRIB_GENERIC11 = 27,
 173    VERT_ATTRIB_GENERIC12 = 28,
 174    VERT_ATTRIB_GENERIC13 = 29,
 175    VERT_ATTRIB_GENERIC14 = 30,
 176    VERT_ATTRIB_GENERIC15 = 31,
 177    VERT_ATTRIB_MAX = 32
 178 };
 179
 180 /**
 181  * Bitflags for vertex attributes.
 182  * These are used in bitfields in many places.
 183  */
 184 /*@{*/
 185 #define VERT_BIT_POS         (1 << VERT_ATTRIB_POS)
 186 #define VERT_BIT_WEIGHT      (1 << VERT_ATTRIB_WEIGHT)
 187 #define VERT_BIT_NORMAL      (1 << VERT_ATTRIB_NORMAL)
 188 #define VERT_BIT_COLOR0      (1 << VERT_ATTRIB_COLOR0)
 189 #define VERT_BIT_COLOR1      (1 << VERT_ATTRIB_COLOR1)
 190 #define VERT_BIT_FOG         (1 << VERT_ATTRIB_FOG)
 191 #define VERT_BIT_COLOR_INDEX (1 << VERT_ATTRIB_COLOR_INDEX)
 192 #define VERT_BIT_EDGEFLAG    (1 << VERT_ATTRIB_EDGEFLAG)
 193 #define VERT_BIT_TEX0        (1 << VERT_ATTRIB_TEX0)
 194 #define VERT_BIT_TEX1        (1 << VERT_ATTRIB_TEX1)
 195 #define VERT_BIT_TEX2        (1 << VERT_ATTRIB_TEX2)
 196 #define VERT_BIT_TEX3        (1 << VERT_ATTRIB_TEX3)
 197 #define VERT_BIT_TEX4        (1 << VERT_ATTRIB_TEX4)
 198 #define VERT_BIT_TEX5        (1 << VERT_ATTRIB_TEX5)
 199 #define VERT_BIT_TEX6        (1 << VERT_ATTRIB_TEX6)
 200 #define VERT_BIT_TEX7        (1 << VERT_ATTRIB_TEX7)
 201 #define VERT_BIT_GENERIC0    (1 << VERT_ATTRIB_GENERIC0)
 202 #define VERT_BIT_GENERIC1    (1 << VERT_ATTRIB_GENERIC1)
 203 #define VERT_BIT_GENERIC2    (1 << VERT_ATTRIB_GENERIC2)
 204 #define VERT_BIT_GENERIC3    (1 << VERT_ATTRIB_GENERIC3)
 205 #define VERT_BIT_GENERIC4    (1 << VERT_ATTRIB_GENERIC4)
 206 #define VERT_BIT_GENERIC5    (1 << VERT_ATTRIB_GENERIC5)
 207 #define VERT_BIT_GENERIC6    (1 << VERT_ATTRIB_GENERIC6)
 208 #define VERT_BIT_GENERIC7    (1 << VERT_ATTRIB_GENERIC7)
 209 #define VERT_BIT_GENERIC8    (1 << VERT_ATTRIB_GENERIC8)
 210 #define VERT_BIT_GENERIC9    (1 << VERT_ATTRIB_GENERIC9)
 211 #define VERT_BIT_GENERIC10   (1 << VERT_ATTRIB_GENERIC10)
 212 #define VERT_BIT_GENERIC11   (1 << VERT_ATTRIB_GENERIC11)
 213 #define VERT_BIT_GENERIC12   (1 << VERT_ATTRIB_GENERIC12)
 214 #define VERT_BIT_GENERIC13   (1 << VERT_ATTRIB_GENERIC13)
 215 #define VERT_BIT_GENERIC14   (1 << VERT_ATTRIB_GENERIC14)
 216 #define VERT_BIT_GENERIC15   (1 << VERT_ATTRIB_GENERIC15)
 217
 218 #define VERT_BIT_TEX(u)  (1 << (VERT_ATTRIB_TEX0 + (u)))
 219 #define VERT_BIT_GENERIC(g)  (1 << (VERT_ATTRIB_GENERIC0 + (g)))
 220 /*@}*/
 221
 222
 223 /**
 224  * Indexes for vertex program result attributes
 225  */
 226 /*@{*/
 227 #define VERT_RESULT_HPOS 0
 228 #define VERT_RESULT_COL0 1
 229 #define VERT_RESULT_COL1 2
 230 #define VERT_RESULT_FOGC 3
 231 #define VERT_RESULT_TEX0 4
 232 #define VERT_RESULT_TEX1 5
 233 #define VERT_RESULT_TEX2 6
 234 #define VERT_RESULT_TEX3 7
 235 #define VERT_RESULT_TEX4 8
 236 #define VERT_RESULT_TEX5 9
 237 #define VERT_RESULT_TEX6 10
 238 #define VERT_RESULT_TEX7 11
 239 #define VERT_RESULT_PSIZ 12
 240 #define VERT_RESULT_BFC0 13
 241 #define VERT_RESULT_BFC1 14
 242 #define VERT_RESULT_EDGE 15
 243 #define VERT_RESULT_VAR0 16  /**< shader varying */
 244 #define VERT_RESULT_MAX  (VERT_RESULT_VAR0 + MAX_VARYING)
 245 /*@}*/
 246
 247
 248 /**
 249  * Indexes for fragment program input attributes.
 250  */
 251 enum
 252 {
 253    FRAG_ATTRIB_WPOS = 0,
 254    FRAG_ATTRIB_COL0 = 1,
 255    FRAG_ATTRIB_COL1 = 2,
 256    FRAG_ATTRIB_FOGC = 3,
 257    FRAG_ATTRIB_TEX0 = 4,
 258    FRAG_ATTRIB_TEX1 = 5,
 259    FRAG_ATTRIB_TEX2 = 6,
 260    FRAG_ATTRIB_TEX3 = 7,
 261    FRAG_ATTRIB_TEX4 = 8,
 262    FRAG_ATTRIB_TEX5 = 9,
 263    FRAG_ATTRIB_TEX6 = 10,
 264    FRAG_ATTRIB_TEX7 = 11,
 265    FRAG_ATTRIB_VAR0 = 12,  /**< shader varying */
 266    FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
 267 };
 268
 269 /**
 270  * Bitflags for fragment program input attributes.
 271  */
 272 /*@{*/
 273 #define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
 274 #define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
 275 #define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
 276 #define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
 277 #define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
 278 #define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
 279 #define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
 280 #define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
 281 #define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
 282 #define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
 283 #define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
 284 #define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
 285 #define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
 286
 287 #define FRAG_BIT_TEX(U)  (FRAG_BIT_TEX0 << (U))
 288 #define FRAG_BIT_VAR(V)  (FRAG_BIT_VAR0 << (V))
 289
 290 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0|       \
 291                            FRAG_BIT_TEX1|       \
 292                            FRAG_BIT_TEX2|       \
 293                            FRAG_BIT_TEX3|       \
 294                            FRAG_BIT_TEX4|       \
 295                            FRAG_BIT_TEX5|       \
 296                            FRAG_BIT_TEX6|       \
 297                            FRAG_BIT_TEX7)
 298 /*@}*/
 299
 300
 301 /**
 302  * Fragment program results
 303  */
 304 enum
 305 {
 306    FRAG_RESULT_COLR = 0,
 307    FRAG_RESULT_COLH = 1,
 308    FRAG_RESULT_DEPR = 2,
 309    FRAG_RESULT_DATA0 = 3,
 310    FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
 311 };
 312
 313
 314 /**
 315  * Indexes for all renderbuffers
 316  */
 317 enum {
 318    BUFFER_FRONT_LEFT  = 0,  /* the four standard color buffers */
 319    BUFFER_BACK_LEFT   = 1,
 320    BUFFER_FRONT_RIGHT = 2,
 321    BUFFER_BACK_RIGHT  = 3,
 322    BUFFER_AUX0        = 4,  /* optional aux buffer */
 323    BUFFER_AUX1        = 5,
 324    BUFFER_AUX2        = 6,
 325    BUFFER_AUX3        = 7,
 326    BUFFER_DEPTH       = 8,
 327    BUFFER_STENCIL     = 9,
 328    BUFFER_ACCUM       = 10,
 329    BUFFER_COLOR0      = 11, /* generic renderbuffers */
 330    BUFFER_COLOR1      = 12,
 331    BUFFER_COLOR2      = 13,
 332    BUFFER_COLOR3      = 14,
 333    BUFFER_COLOR4      = 15,
 334    BUFFER_COLOR5      = 16,
 335    BUFFER_COLOR6      = 17,
 336    BUFFER_COLOR7      = 18,
 337    BUFFER_COUNT       = 19
 338 };
 339
 340 /**
 341  * Bit flags for all renderbuffers
 342  */
 343 #define BUFFER_BIT_FRONT_LEFT   (1 << BUFFER_FRONT_LEFT)
 344 #define BUFFER_BIT_BACK_LEFT    (1 << BUFFER_BACK_LEFT)
 345 #define BUFFER_BIT_FRONT_RIGHT  (1 << BUFFER_FRONT_RIGHT)
 346 #define BUFFER_BIT_BACK_RIGHT   (1 << BUFFER_BACK_RIGHT)
 347 #define BUFFER_BIT_AUX0         (1 << BUFFER_AUX0)
 348 #define BUFFER_BIT_AUX1         (1 << BUFFER_AUX1)
 349 #define BUFFER_BIT_AUX2         (1 << BUFFER_AUX2)
 350 #define BUFFER_BIT_AUX3         (1 << BUFFER_AUX3)
 351 #define BUFFER_BIT_DEPTH        (1 << BUFFER_DEPTH)
 352 #define BUFFER_BIT_STENCIL      (1 << BUFFER_STENCIL)
 353 #define BUFFER_BIT_ACCUM        (1 << BUFFER_ACCUM)
 354 #define BUFFER_BIT_COLOR0       (1 << BUFFER_COLOR0)
 355 #define BUFFER_BIT_COLOR1       (1 << BUFFER_COLOR1)
 356 #define BUFFER_BIT_COLOR2       (1 << BUFFER_COLOR2)
 357 #define BUFFER_BIT_COLOR3       (1 << BUFFER_COLOR3)
 358 #define BUFFER_BIT_COLOR4       (1 << BUFFER_COLOR4)
 359 #define BUFFER_BIT_COLOR5       (1 << BUFFER_COLOR5)
 360 #define BUFFER_BIT_COLOR6       (1 << BUFFER_COLOR6)
 361 #define BUFFER_BIT_COLOR7       (1 << BUFFER_COLOR7)
 362
 363 /**
 364  * Mask of all the color buffer bits (but not accum).
 365  */
 366 #define BUFFER_BITS_COLOR  (BUFFER_BIT_FRONT_LEFT | \
 367                             BUFFER_BIT_BACK_LEFT | \
 368                             BUFFER_BIT_FRONT_RIGHT | \
 369                             BUFFER_BIT_BACK_RIGHT | \
 370                             BUFFER_BIT_AUX0 | \
 371                             BUFFER_BIT_AUX1 | \
 372                             BUFFER_BIT_AUX2 | \
 373                             BUFFER_BIT_AUX3 | \
 374                             BUFFER_BIT_COLOR0 | \
 375                             BUFFER_BIT_COLOR1 | \
 376                             BUFFER_BIT_COLOR2 | \
 377                             BUFFER_BIT_COLOR3 | \
 378                             BUFFER_BIT_COLOR4 | \
 379                             BUFFER_BIT_COLOR5 | \
 380                             BUFFER_BIT_COLOR6 | \
 381                             BUFFER_BIT_COLOR7)
 382
 383
 384 /** The pixel transfer path has three color tables: */
 385 /*@{*/
 386 #define COLORTABLE_PRECONVOLUTION  0
 387 #define COLORTABLE_POSTCONVOLUTION 1
 388 #define COLORTABLE_POSTCOLORMATRIX 2
 389 #define COLORTABLE_MAX 3
 390 /*@}*/
 391
 392
 393 /**
 394  * Data structure for color tables
 395  */
 396 struct gl_color_table
 397 {
 398    GLenum InternalFormat;      /**< The user-specified format */
 399    GLenum _BaseFormat;         /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
 400    GLuint Size;                /**< number of entries in table */
 401    GLfloat *TableF;            /**< Color table, floating point values */
 402    GLubyte *TableUB;           /**< Color table, ubyte values */
 403    GLubyte RedSize;
 404    GLubyte GreenSize;
 405    GLubyte BlueSize;
 406    GLubyte AlphaSize;
 407    GLubyte LuminanceSize;
 408    GLubyte IntensitySize;
 409 };
 410
 411
 412 /**
 413  * \name Bit flags used for updating material values.
 414  */
 415 /*@{*/
 416 #define MAT_ATTRIB_FRONT_AMBIENT           0
 417 #define MAT_ATTRIB_BACK_AMBIENT            1
 418 #define MAT_ATTRIB_FRONT_DIFFUSE           2
 419 #define MAT_ATTRIB_BACK_DIFFUSE            3
 420 #define MAT_ATTRIB_FRONT_SPECULAR          4
 421 #define MAT_ATTRIB_BACK_SPECULAR           5
 422 #define MAT_ATTRIB_FRONT_EMISSION          6
 423 #define MAT_ATTRIB_BACK_EMISSION           7
 424 #define MAT_ATTRIB_FRONT_SHININESS         8
 425 #define MAT_ATTRIB_BACK_SHININESS          9
 426 #define MAT_ATTRIB_FRONT_INDEXES           10
 427 #define MAT_ATTRIB_BACK_INDEXES            11
 428 #define MAT_ATTRIB_MAX                     12
 429
 430 #define MAT_ATTRIB_AMBIENT(f)  (MAT_ATTRIB_FRONT_AMBIENT+(f))
 431 #define MAT_ATTRIB_DIFFUSE(f)  (MAT_ATTRIB_FRONT_DIFFUSE+(f))
 432 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
 433 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
 434 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
 435 #define MAT_ATTRIB_INDEXES(f)  (MAT_ATTRIB_FRONT_INDEXES+(f))
 436
 437 #define MAT_INDEX_AMBIENT  0
 438 #define MAT_INDEX_DIFFUSE  1
 439 #define MAT_INDEX_SPECULAR 2
 440
 441 #define MAT_BIT_FRONT_AMBIENT         (1<<MAT_ATTRIB_FRONT_AMBIENT)
 442 #define MAT_BIT_BACK_AMBIENT          (1<<MAT_ATTRIB_BACK_AMBIENT)
 443 #define MAT_BIT_FRONT_DIFFUSE         (1<<MAT_ATTRIB_FRONT_DIFFUSE)
 444 #define MAT_BIT_BACK_DIFFUSE          (1<<MAT_ATTRIB_BACK_DIFFUSE)
 445 #define MAT_BIT_FRONT_SPECULAR        (1<<MAT_ATTRIB_FRONT_SPECULAR)
 446 #define MAT_BIT_BACK_SPECULAR         (1<<MAT_ATTRIB_BACK_SPECULAR)
 447 #define MAT_BIT_FRONT_EMISSION        (1<<MAT_ATTRIB_FRONT_EMISSION)
 448 #define MAT_BIT_BACK_EMISSION         (1<<MAT_ATTRIB_BACK_EMISSION)
 449 #define MAT_BIT_FRONT_SHININESS       (1<<MAT_ATTRIB_FRONT_SHININESS)
 450 #define MAT_BIT_BACK_SHININESS        (1<<MAT_ATTRIB_BACK_SHININESS)
 451 #define MAT_BIT_FRONT_INDEXES         (1<<MAT_ATTRIB_FRONT_INDEXES)
 452 #define MAT_BIT_BACK_INDEXES          (1<<MAT_ATTRIB_BACK_INDEXES)
 453
 454
 455 #define FRONT_MATERIAL_BITS     (MAT_BIT_FRONT_EMISSION |       \
 456                                  MAT_BIT_FRONT_AMBIENT |        \
 457                                  MAT_BIT_FRONT_DIFFUSE |        \
 458                                  MAT_BIT_FRONT_SPECULAR |       \
 459                                  MAT_BIT_FRONT_SHININESS |      \
 460                                  MAT_BIT_FRONT_INDEXES)
 461
 462 #define BACK_MATERIAL_BITS      (MAT_BIT_BACK_EMISSION |        \
 463                                  MAT_BIT_BACK_AMBIENT |         \
 464                                  MAT_BIT_BACK_DIFFUSE |         \
 465                                  MAT_BIT_BACK_SPECULAR |        \
 466                                  MAT_BIT_BACK_SHININESS |       \
 467                                  MAT_BIT_BACK_INDEXES)
 468
 469 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 470 /*@}*/
 471
 472
 473 #define EXP_TABLE_SIZE 512      /**< Specular exponent lookup table sizes */
 474 #define SHINE_TABLE_SIZE 256    /**< Material shininess lookup table sizes */
 475
 476 /**
 477  * Material shininess lookup table.
 478  */
 479 struct gl_shine_tab
 480 {
 481    struct gl_shine_tab *next, *prev;
 482    GLfloat tab[SHINE_TABLE_SIZE+1];
 483    GLfloat shininess;
 484    GLuint refcount;
 485 };
 486
 487
 488 /**
 489  * Light source state.
 490  */
 491 struct gl_light
 492 {
 493    struct gl_light *next;       /**< double linked list with sentinel */
 494    struct gl_light *prev;
 495
 496    GLfloat Ambient[4];          /**< ambient color */
 497    GLfloat Diffuse[4];          /**< diffuse color */
 498    GLfloat Specular[4];         /**< specular color */
 499    GLfloat EyePosition[4];      /**< position in eye coordinates */
 500    GLfloat EyeDirection[4];     /**< spotlight dir in eye coordinates */
 501    GLfloat SpotExponent;
 502    GLfloat SpotCutoff;          /**< in degrees */
 503    GLfloat _CosCutoffNeg;       /**< = cos(SpotCutoff) */
 504    GLfloat _CosCutoff;          /**< = MAX(0, cos(SpotCutoff)) */
 505    GLfloat ConstantAttenuation;
 506    GLfloat LinearAttenuation;
 507    GLfloat QuadraticAttenuation;
 508    GLboolean Enabled;           /**< On/off flag */
 509
 510    /**
 511     * \name Derived fields
 512     */
 513    /*@{*/
 514    GLbitfield _Flags;           /**< State */
 515
 516    GLfloat _Position[4];        /**< position in eye/obj coordinates */
 517    GLfloat _VP_inf_norm[3];     /**< Norm direction to infinite light */
 518    GLfloat _h_inf_norm[3];      /**< Norm( _VP_inf_norm + <0,0,1> ) */
 519    GLfloat _NormDirection[4];   /**< normalized spotlight direction */
 520    GLfloat _VP_inf_spot_attenuation;
 521
 522    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /**< to replace a pow() call */
 523    GLfloat _MatAmbient[2][3];   /**< material ambient * light ambient */
 524    GLfloat _MatDiffuse[2][3];   /**< material diffuse * light diffuse */
 525    GLfloat _MatSpecular[2][3];  /**< material spec * light specular */
 526    GLfloat _dli;                /**< CI diffuse light intensity */
 527    GLfloat _sli;                /**< CI specular light intensity */
 528    /*@}*/
 529 };
 530
 531
 532 /**
 533  * Light model state.
 534  */
 535 struct gl_lightmodel
 536 {
 537    GLfloat Ambient[4];          /**< ambient color */
 538    GLboolean LocalViewer;       /**< Local (or infinite) view point? */
 539    GLboolean TwoSide;           /**< Two (or one) sided lighting? */
 540    GLenum ColorControl;         /**< either GL_SINGLE_COLOR
 541                                  *    or GL_SEPARATE_SPECULAR_COLOR */
 542 };
 543
 544
 545 /**
 546  * Material state.
 547  */
 548 struct gl_material
 549 {
 550    GLfloat Attrib[MAT_ATTRIB_MAX][4];
 551 };
 552
 553
 554 /**
 555  * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
 556  */
 557 struct gl_accum_attrib
 558 {
 559    GLfloat ClearColor[4];       /**< Accumulation buffer clear color */
 560 };
 561
 562
 563 /**
 564  * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
 565  */
 566 struct gl_colorbuffer_attrib
 567 {
 568    GLuint ClearIndex;                   /**< Index to use for glClear */
 569    GLclampf ClearColor[4];              /**< Color to use for glClear */
 570
 571    GLuint IndexMask;                    /**< Color index write mask */
 572    GLubyte ColorMask[4];                /**< Each flag is 0xff or 0x0 */
 573
 574    GLenum DrawBuffer[MAX_DRAW_BUFFERS]; /**< Which buffer to draw into */
 575
 576    /**
 577     * \name alpha testing
 578     */
 579    /*@{*/
 580    GLboolean AlphaEnabled;              /**< Alpha test enabled flag */
 581    GLenum AlphaFunc;                    /**< Alpha test function */
 582    GLclampf AlphaRef;                   /**< Alpha reference value */
 583    /*@}*/
 584
 585    /**
 586     * \name Blending
 587     */
 588    /*@{*/
 589    GLboolean BlendEnabled;              /**< Blending enabled flag */
 590    GLenum BlendSrcRGB;                  /**< Blending source operator */
 591    GLenum BlendDstRGB;                  /**< Blending destination operator */
 592    GLenum BlendSrcA;                    /**< GL_INGR_blend_func_separate */
 593    GLenum BlendDstA;                    /**< GL_INGR_blend_func_separate */
 594    GLenum BlendEquationRGB;             /**< Blending equation */
 595    GLenum BlendEquationA;               /**< GL_EXT_blend_equation_separate */
 596    GLfloat BlendColor[4];               /**< Blending color */
 597    /*@}*/
 598
 599    /**
 600     * \name Logic op
 601     */
 602    /*@{*/
 603    GLenum LogicOp;                      /**< Logic operator */
 604    GLboolean IndexLogicOpEnabled;       /**< Color index logic op enabled flag */
 605    GLboolean ColorLogicOpEnabled;       /**< RGBA logic op enabled flag */
 606    GLboolean _LogicOpEnabled;           /**< RGBA logic op + EXT_blend_logic_op enabled flag */
 607    /*@}*/
 608
 609    GLboolean DitherFlag;                /**< Dither enable flag */
 610
 611    GLenum ClampFragmentColor; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 612    GLenum ClampReadColor;     /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
 613 };
 614
 615
 616 /**
 617  * Current attribute group (GL_CURRENT_BIT).
 618  */
 619 struct gl_current_attrib
 620 {
 621    /**
 622     * \name Current vertex attributes.
 623     * \note Values are valid only after FLUSH_VERTICES has been called.
 624     * \note Index and Edgeflag current values are stored as floats in the
 625     * SIX and SEVEN attribute slots.
 626     */
 627    /*@{*/
 628    GLfloat Attrib[VERT_ATTRIB_MAX][4];  /**< Position, color, texcoords, etc */
 629    /*@}*/
 630
 631    /**
 632     * \name Current raster position attributes (always valid).
 633     * \note This set of attributes is very similar to the SWvertex struct.
 634     */
 635    /*@{*/
 636    GLfloat RasterPos[4];
 637    GLfloat RasterDistance;
 638    GLfloat RasterColor[4];
 639    GLfloat RasterSecondaryColor[4];
 640    GLfloat RasterIndex;
 641    GLfloat RasterTexCoords[MAX_TEXTURE_COORD_UNITS][4];
 642    GLboolean RasterPosValid;
 643    /*@}*/
 644 };
 645
 646
 647 /**
 648  * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
 649  */
 650 struct gl_depthbuffer_attrib
 651 {
 652    GLenum Func;                 /**< Function for depth buffer compare */
 653    GLclampd Clear;              /**< Value to clear depth buffer to */
 654    GLboolean Test;              /**< Depth buffering enabled flag */
 655    GLboolean Mask;              /**< Depth buffer writable? */
 656    GLboolean BoundsTest;        /**< GL_EXT_depth_bounds_test */
 657    GLfloat BoundsMin, BoundsMax;/**< GL_EXT_depth_bounds_test */
 658 };
 659
 660
 661 /**
 662  * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
 663  */
 664 struct gl_enable_attrib
 665 {
 666    GLboolean AlphaTest;
 667    GLboolean AutoNormal;
 668    GLboolean Blend;
 669    GLbitfield ClipPlanes;
 670    GLboolean ColorMaterial;
 671    GLboolean ColorTable[COLORTABLE_MAX];
 672    GLboolean Convolution1D;
 673    GLboolean Convolution2D;
 674    GLboolean Separable2D;
 675    GLboolean CullFace;
 676    GLboolean DepthTest;
 677    GLboolean Dither;
 678    GLboolean Fog;
 679    GLboolean Histogram;
 680    GLboolean Light[MAX_LIGHTS];
 681    GLboolean Lighting;
 682    GLboolean LineSmooth;
 683    GLboolean LineStipple;
 684    GLboolean IndexLogicOp;
 685    GLboolean ColorLogicOp;
 686    GLboolean Map1Color4;
 687    GLboolean Map1Index;
 688    GLboolean Map1Normal;
 689    GLboolean Map1TextureCoord1;
 690    GLboolean Map1TextureCoord2;
 691    GLboolean Map1TextureCoord3;
 692    GLboolean Map1TextureCoord4;
 693    GLboolean Map1Vertex3;
 694    GLboolean Map1Vertex4;
 695    GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
 696    GLboolean Map2Color4;
 697    GLboolean Map2Index;
 698    GLboolean Map2Normal;
 699    GLboolean Map2TextureCoord1;
 700    GLboolean Map2TextureCoord2;
 701    GLboolean Map2TextureCoord3;
 702    GLboolean Map2TextureCoord4;
 703    GLboolean Map2Vertex3;
 704    GLboolean Map2Vertex4;
 705    GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
 706    GLboolean MinMax;
 707    GLboolean Normalize;
 708    GLboolean PixelTexture;
 709    GLboolean PointSmooth;
 710    GLboolean PolygonOffsetPoint;
 711    GLboolean PolygonOffsetLine;
 712    GLboolean PolygonOffsetFill;
 713    GLboolean PolygonSmooth;
 714    GLboolean PolygonStipple;
 715    GLboolean RescaleNormals;
 716    GLboolean Scissor;
 717    GLboolean Stencil;
 718    GLboolean StencilTwoSide;          /* GL_EXT_stencil_two_side */
 719    GLboolean MultisampleEnabled;      /* GL_ARB_multisample */
 720    GLboolean SampleAlphaToCoverage;   /* GL_ARB_multisample */
 721    GLboolean SampleAlphaToOne;        /* GL_ARB_multisample */
 722    GLboolean SampleCoverage;          /* GL_ARB_multisample */
 723    GLboolean SampleCoverageInvert;    /* GL_ARB_multisample */
 724    GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
 725    GLuint Texture[MAX_TEXTURE_IMAGE_UNITS];
 726    GLuint TexGen[MAX_TEXTURE_COORD_UNITS];
 727    /* SGI_texture_color_table */
 728    GLboolean TextureColorTable[MAX_TEXTURE_IMAGE_UNITS];
 729    /* GL_ARB_vertex_program / GL_NV_vertex_program */
 730    GLboolean VertexProgram;
 731    GLboolean VertexProgramPointSize;
 732    GLboolean VertexProgramTwoSide;
 733    /* GL_ARB_point_sprite / GL_NV_point_sprite */
 734    GLboolean PointSprite;
 735    GLboolean FragmentShaderATI;
 736 };
 737
 738
 739 /**
 740  * Evaluator attribute group (GL_EVAL_BIT).
 741  */
 742 struct gl_eval_attrib
 743 {
 744    /**
 745     * \name Enable bits
 746     */
 747    /*@{*/
 748    GLboolean Map1Color4;
 749    GLboolean Map1Index;
 750    GLboolean Map1Normal;
 751    GLboolean Map1TextureCoord1;
 752    GLboolean Map1TextureCoord2;
 753    GLboolean Map1TextureCoord3;
 754    GLboolean Map1TextureCoord4;
 755    GLboolean Map1Vertex3;
 756    GLboolean Map1Vertex4;
 757    GLboolean Map1Attrib[16];  /* GL_NV_vertex_program */
 758    GLboolean Map2Color4;
 759    GLboolean Map2Index;
 760    GLboolean Map2Normal;
 761    GLboolean Map2TextureCoord1;
 762    GLboolean Map2TextureCoord2;
 763    GLboolean Map2TextureCoord3;
 764    GLboolean Map2TextureCoord4;
 765    GLboolean Map2Vertex3;
 766    GLboolean Map2Vertex4;
 767    GLboolean Map2Attrib[16];  /* GL_NV_vertex_program */
 768    GLboolean AutoNormal;
 769    /*@}*/
 770
 771    /**
 772     * \name Map Grid endpoints and divisions and calculated du values
 773     */
 774    /*@{*/
 775    GLint MapGrid1un;
 776    GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
 777    GLint MapGrid2un, MapGrid2vn;
 778    GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
 779    GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
 780    /*@}*/
 781 };
 782
 783
 784 /**
 785  * Fog attribute group (GL_FOG_BIT).
 786  */
 787 struct gl_fog_attrib
 788 {
 789    GLboolean Enabled;           /**< Fog enabled flag */
 790    GLfloat Color[4];            /**< Fog color */
 791    GLfloat Density;             /**< Density >= 0.0 */
 792    GLfloat Start;               /**< Start distance in eye coords */
 793    GLfloat End;                 /**< End distance in eye coords */
 794    GLfloat Index;               /**< Fog index */
 795    GLenum Mode;                 /**< Fog mode */
 796    GLboolean ColorSumEnabled;
 797    GLenum FogCoordinateSource;  /**< GL_EXT_fog_coord */
 798    GLfloat _Scale;              /**< (End == Start) ? 1.0 : 1.0 / (End - Start) */
 799 };
 800
 801
 802 /**
 803  * Hint attribute group (GL_HINT_BIT).
 804  *
 805  * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
 806  */
 807 struct gl_hint_attrib
 808 {
 809    GLenum PerspectiveCorrection;
 810    GLenum PointSmooth;
 811    GLenum LineSmooth;
 812    GLenum PolygonSmooth;
 813    GLenum Fog;
 814    GLenum ClipVolumeClipping;   /**< GL_EXT_clip_volume_hint */
 815    GLenum TextureCompression;   /**< GL_ARB_texture_compression */
 816    GLenum GenerateMipmap;       /**< GL_SGIS_generate_mipmap */
 817    GLenum FragmentShaderDerivative; /**< GL_ARB_fragment_shader */
 818 };
 819
 820
 821 /**
 822  * Histogram attributes.
 823  */
 824 struct gl_histogram_attrib
 825 {
 826    GLuint Width;                                /**< number of table entries */
 827    GLint Format;                                /**< GL_ALPHA, GL_RGB, etc */
 828    GLuint Count[HISTOGRAM_TABLE_SIZE][4];       /**< the histogram */
 829    GLboolean Sink;                              /**< terminate image transfer? */
 830    GLubyte RedSize;                             /**< Bits per counter */
 831    GLubyte GreenSize;
 832    GLubyte BlueSize;
 833    GLubyte AlphaSize;
 834    GLubyte LuminanceSize;
 835 };
 836
 837
 838 /**
 839  * Color Min/max state.
 840  */
 841 struct gl_minmax_attrib
 842 {
 843    GLenum Format;
 844    GLboolean Sink;
 845    GLfloat Min[4], Max[4];   /**< RGBA */
 846 };
 847
 848
 849 /**
 850  * Image convolution state.
 851  */
 852 struct gl_convolution_attrib
 853 {
 854    GLenum Format;
 855    GLenum InternalFormat;
 856    GLuint Width;
 857    GLuint Height;
 858    GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
 859 };
 860
 861
 862 /**
 863  * Light state flags.
 864  */
 865 /*@{*/
 866 #define LIGHT_SPOT         0x1
 867 #define LIGHT_LOCAL_VIEWER 0x2
 868 #define LIGHT_POSITIONAL   0x4
 869 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 870 /*@}*/
 871
 872
 873 /**
 874  * Lighting attribute group (GL_LIGHT_BIT).
 875  */
 876 struct gl_light_attrib
 877 {
 878    struct gl_light Light[MAX_LIGHTS];   /**< Array of light sources */
 879    struct gl_lightmodel Model;          /**< Lighting model */
 880
 881    /**
 882     * Must flush FLUSH_VERTICES before referencing:
 883     */
 884    /*@{*/
 885    struct gl_material Material;         /**< Includes front & back values */
 886    /*@}*/
 887
 888    GLboolean Enabled;                   /**< Lighting enabled flag */
 889    GLenum ShadeModel;                   /**< GL_FLAT or GL_SMOOTH */
 890    GLenum ColorMaterialFace;            /**< GL_FRONT, BACK or FRONT_AND_BACK */
 891    GLenum ColorMaterialMode;            /**< GL_AMBIENT, GL_DIFFUSE, etc */
 892    GLbitfield ColorMaterialBitmask;     /**< bitmask formed from Face and Mode */
 893    GLboolean ColorMaterialEnabled;
 894    GLenum ClampVertexColor;
 895
 896    struct gl_light EnabledList;         /**< List sentinel */
 897
 898    /**
 899     * Derived state for optimizations:
 900     */
 901    /*@{*/
 902    GLboolean _NeedEyeCoords;
 903    GLboolean _NeedVertices;             /**< Use fast shader? */
 904    GLbitfield  _Flags;                  /**< LIGHT_* flags, see above */
 905    GLfloat _BaseColor[2][3];
 906    /*@}*/
 907 };
 908
 909
 910 /**
 911  * Line attribute group (GL_LINE_BIT).
 912  */
 913 struct gl_line_attrib
 914 {
 915    GLboolean SmoothFlag;        /**< GL_LINE_SMOOTH enabled? */
 916    GLboolean StippleFlag;       /**< GL_LINE_STIPPLE enabled? */
 917    GLushort StipplePattern;     /**< Stipple pattern */
 918    GLint StippleFactor;         /**< Stipple repeat factor */
 919    GLfloat Width;               /**< Line width */
 920 };
 921
 922
 923 /**
 924  * Display list attribute group (GL_LIST_BIT).
 925  */
 926 struct gl_list_attrib
 927 {
 928    GLuint ListBase;
 929 };
 930
 931
 932 /**
 933  * Used by device drivers to hook new commands into display lists.
 934  */
 935 struct gl_list_instruction
 936 {
 937    GLuint Size;
 938    void (*Execute)( GLcontext *ctx, void *data );
 939    void (*Destroy)( GLcontext *ctx, void *data );
 940    void (*Print)( GLcontext *ctx, void *data );
 941 };
 942
 943 #define MAX_DLIST_EXT_OPCODES 16
 944
 945 /**
 946  * Used by device drivers to hook new commands into display lists.
 947  */
 948 struct gl_list_extensions
 949 {
 950    struct gl_list_instruction Opcode[MAX_DLIST_EXT_OPCODES];
 951    GLuint NumOpcodes;
 952 };
 953
 954
 955 /**
 956  * Multisample attribute group (GL_MULTISAMPLE_BIT).
 957  */
 958 struct gl_multisample_attrib
 959 {
 960    GLboolean Enabled;
 961    GLboolean SampleAlphaToCoverage;
 962    GLboolean SampleAlphaToOne;
 963    GLboolean SampleCoverage;
 964    GLfloat SampleCoverageValue;
 965    GLboolean SampleCoverageInvert;
 966 };
 967
 968
 969 /**
 970  * A pixelmap (see glPixelMap)
 971  */
 972 struct gl_pixelmap
 973 {
 974    GLint Size;
 975    GLfloat Map[MAX_PIXEL_MAP_TABLE];
 976    GLubyte Map8[MAX_PIXEL_MAP_TABLE];  /**< converted to 8-bit color */
 977 };
 978
 979
 980 /**
 981  * Collection of all pixelmaps
 982  */
 983 struct gl_pixelmaps
 984 {
 985    struct gl_pixelmap RtoR;  /**< i.e. GL_PIXEL_MAP_R_TO_R */
 986    struct gl_pixelmap GtoG;
 987    struct gl_pixelmap BtoB;
 988    struct gl_pixelmap AtoA;
 989    struct gl_pixelmap ItoR;
 990    struct gl_pixelmap ItoG;
 991    struct gl_pixelmap ItoB;
 992    struct gl_pixelmap ItoA;
 993    struct gl_pixelmap ItoI;
 994    struct gl_pixelmap StoS;
 995 };
 996
 997
 998 /**
 999  * Pixel attribute group (GL_PIXEL_MODE_BIT).
1000  */
1001 struct gl_pixel_attrib
1002 {
1003    GLenum ReadBuffer;           /**< source buffer for glRead/CopyPixels() */
1004
1005    /*--- Begin Pixel Transfer State ---*/
1006    /* Fields are in the order in which they're applied... */
1007
1008    /* Scale & Bias (index shift, offset) */
1009    GLfloat RedBias, RedScale;
1010    GLfloat GreenBias, GreenScale;
1011    GLfloat BlueBias, BlueScale;
1012    GLfloat AlphaBias, AlphaScale;
1013    GLfloat DepthBias, DepthScale;
1014    GLint IndexShift, IndexOffset;
1015
1016    /* Pixel Maps */
1017    /* Note: actual pixel maps are not part of this attrib group */
1018    GLboolean MapColorFlag;
1019    GLboolean MapStencilFlag;
1020
1021    /* There are multiple color table stages: */
1022    GLboolean ColorTableEnabled[COLORTABLE_MAX];
1023    GLfloat ColorTableScale[COLORTABLE_MAX][4];  /**< RGBA */
1024    GLfloat ColorTableBias[COLORTABLE_MAX][4];   /**< RGBA */
1025
1026    /* Convolution (GL_EXT_convolution) */
1027    GLboolean Convolution1DEnabled;
1028    GLboolean Convolution2DEnabled;
1029    GLboolean Separable2DEnabled;
1030    GLfloat ConvolutionBorderColor[3][4];
1031    GLenum ConvolutionBorderMode[3];
1032    GLfloat ConvolutionFilterScale[3][4];  /**< RGBA */
1033    GLfloat ConvolutionFilterBias[3][4];   /**< RGBA */
1034    GLfloat PostConvolutionScale[4];  /**< RGBA */
1035    GLfloat PostConvolutionBias[4];   /**< RGBA */
1036
1037    /* Color matrix (GL_SGI_color_matrix) */
1038    /* Note: the color matrix is not part of this attrib group */
1039    GLfloat PostColorMatrixScale[4];  /**< RGBA */
1040    GLfloat PostColorMatrixBias[4];   /**< RGBA */
1041
1042    /* Histogram & minmax (GL_EXT_histogram) */
1043    /* Note: histogram and minmax data are not part of this attrib group */
1044    GLboolean HistogramEnabled;
1045    GLboolean MinMaxEnabled;
1046
1047    /*--- End Pixel Transfer State ---*/
1048
1049    /* Pixel Zoom */
1050    GLfloat ZoomX, ZoomY;
1051
1052    /** GL_SGI_texture_color_table */
1053    GLfloat TextureColorTableScale[4];
1054    GLfloat TextureColorTableBias[4];
1055 };
1056
1057
1058 /**
1059  * Point attribute group (GL_POINT_BIT).
1060  */
1061 struct gl_point_attrib
1062 {
1063    GLboolean SmoothFlag;        /**< True if GL_POINT_SMOOTH is enabled */
1064    GLfloat Size;                /**< User-specified point size */
1065    GLfloat Params[3];           /**< GL_EXT_point_parameters */
1066    GLfloat MinSize, MaxSize;    /**< GL_EXT_point_parameters */
1067    GLfloat Threshold;           /**< GL_EXT_point_parameters */
1068    GLboolean _Attenuated;       /**< True if Params != [1, 0, 0] */
1069    GLboolean PointSprite;       /**< GL_NV/ARB_point_sprite */
1070    GLboolean CoordReplace[MAX_TEXTURE_COORD_UNITS]; /**< GL_ARB_point_sprite */
1071    GLenum SpriteRMode;          /**< GL_NV_point_sprite (only!) */
1072    GLenum SpriteOrigin;         /**< GL_ARB_point_sprite */
1073 };
1074
1075
1076 /**
1077  * Polygon attribute group (GL_POLYGON_BIT).
1078  */
1079 struct gl_polygon_attrib
1080 {
1081    GLenum FrontFace;            /**< Either GL_CW or GL_CCW */
1082    GLenum FrontMode;            /**< Either GL_POINT, GL_LINE or GL_FILL */
1083    GLenum BackMode;             /**< Either GL_POINT, GL_LINE or GL_FILL */
1084    GLboolean _FrontBit;         /**< 0=GL_CCW, 1=GL_CW */
1085    GLboolean CullFlag;          /**< Culling on/off flag */
1086    GLboolean SmoothFlag;        /**< True if GL_POLYGON_SMOOTH is enabled */
1087    GLboolean StippleFlag;       /**< True if GL_POLYGON_STIPPLE is enabled */
1088    GLenum CullFaceMode;         /**< Culling mode GL_FRONT or GL_BACK */
1089    GLfloat OffsetFactor;        /**< Polygon offset factor, from user */
1090    GLfloat OffsetUnits;         /**< Polygon offset units, from user */
1091    GLboolean OffsetPoint;       /**< Offset in GL_POINT mode */
1092    GLboolean OffsetLine;        /**< Offset in GL_LINE mode */
1093    GLboolean OffsetFill;        /**< Offset in GL_FILL mode */
1094 };
1095
1096
1097 /**
1098  * Scissor attributes (GL_SCISSOR_BIT).
1099  */
1100 struct gl_scissor_attrib
1101 {
1102    GLboolean Enabled;           /**< Scissor test enabled? */
1103    GLint X, Y;                  /**< Lower left corner of box */
1104    GLsizei Width, Height;       /**< Size of box */
1105 };
1106
1107
1108 /**
1109  * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1110  */
1111 struct gl_stencil_attrib
1112 {
1113    GLboolean Enabled;           /**< Enabled flag */
1114    GLboolean TestTwoSide;       /**< GL_EXT_stencil_two_side */
1115    GLubyte ActiveFace;          /**< GL_EXT_stencil_two_side (0 or 1) */
1116    GLboolean _TestTwoSide;
1117    GLenum Function[2];          /**< Stencil function */
1118    GLenum FailFunc[2];          /**< Fail function */
1119    GLenum ZPassFunc[2];         /**< Depth buffer pass function */
1120    GLenum ZFailFunc[2];         /**< Depth buffer fail function */
1121    GLint Ref[2];                /**< Reference value */
1122    GLuint ValueMask[2];         /**< Value mask */
1123    GLuint WriteMask[2];         /**< Write mask */
1124    GLuint Clear;                /**< Clear value */
1125 };
1126
1127
1128 #define NUM_TEXTURE_TARGETS 7   /* 1D, 2D, 3D, CUBE, RECT, 1D_STACK, and 2D_STACK */
1129
1130 /**
1131  * An index for each type of texture object
1132  */
1133 /*@{*/
1134 #define TEXTURE_1D_INDEX       0
1135 #define TEXTURE_2D_INDEX       1
1136 #define TEXTURE_3D_INDEX       2
1137 #define TEXTURE_CUBE_INDEX     3
1138 #define TEXTURE_RECT_INDEX     4
1139 #define TEXTURE_1D_ARRAY_INDEX 5
1140 #define TEXTURE_2D_ARRAY_INDEX 6
1141 /*@}*/
1142
1143 /**
1144  * Bit flags for each type of texture object
1145  * Used for Texture.Unit[]._ReallyEnabled flags.
1146  */
1147 /*@{*/
1148 #define TEXTURE_1D_BIT       (1 << TEXTURE_1D_INDEX)
1149 #define TEXTURE_2D_BIT       (1 << TEXTURE_2D_INDEX)
1150 #define TEXTURE_3D_BIT       (1 << TEXTURE_3D_INDEX)
1151 #define TEXTURE_CUBE_BIT     (1 << TEXTURE_CUBE_INDEX)
1152 #define TEXTURE_RECT_BIT     (1 << TEXTURE_RECT_INDEX)
1153 #define TEXTURE_1D_ARRAY_BIT (1 << TEXTURE_1D_ARRAY_INDEX)
1154 #define TEXTURE_2D_ARRAY_BIT (1 << TEXTURE_2D_ARRAY_INDEX)
1155 /*@}*/
1156
1157
1158 /**
1159  * TexGenEnabled flags.
1160  */
1161 /*@{*/
1162 #define S_BIT 1
1163 #define T_BIT 2
1164 #define R_BIT 4
1165 #define Q_BIT 8
1166 /*@}*/
1167
1168
1169 /**
1170  * Bit flag versions of the corresponding GL_ constants.
1171  */
1172 /*@{*/
1173 #define TEXGEN_SPHERE_MAP        0x1
1174 #define TEXGEN_OBJ_LINEAR        0x2
1175 #define TEXGEN_EYE_LINEAR        0x4
1176 #define TEXGEN_REFLECTION_MAP_NV 0x8
1177 #define TEXGEN_NORMAL_MAP_NV     0x10
1178
1179 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
1180                                   TEXGEN_REFLECTION_MAP_NV | \
1181                                   TEXGEN_NORMAL_MAP_NV)
1182 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
1183                                   TEXGEN_REFLECTION_MAP_NV | \
1184                                   TEXGEN_NORMAL_MAP_NV     | \
1185                                   TEXGEN_EYE_LINEAR)
1186 /*@}*/
1187
1188
1189 /* A selection of state flags to make driver and module's lives easier. */
1190 #define ENABLE_TEXGEN0        0x1
1191 #define ENABLE_TEXGEN1        0x2
1192 #define ENABLE_TEXGEN2        0x4
1193 #define ENABLE_TEXGEN3        0x8
1194 #define ENABLE_TEXGEN4        0x10
1195 #define ENABLE_TEXGEN5        0x20
1196 #define ENABLE_TEXGEN6        0x40
1197 #define ENABLE_TEXGEN7        0x80
1198
1199 #define ENABLE_TEXMAT0        0x1       /* Ie. not the identity matrix */
1200 #define ENABLE_TEXMAT1        0x2
1201 #define ENABLE_TEXMAT2        0x4
1202 #define ENABLE_TEXMAT3        0x8
1203 #define ENABLE_TEXMAT4        0x10
1204 #define ENABLE_TEXMAT5        0x20
1205 #define ENABLE_TEXMAT6        0x40
1206 #define ENABLE_TEXMAT7        0x80
1207
1208 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1209 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1210
1211
1212 /**
1213  * Texel fetch function prototype.  We use texel fetch functions to
1214  * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1215  * texture images.  These functions help to isolate us from the gritty
1216  * details of all the various texture image encodings.
1217  *
1218  * \param texImage texture image.
1219  * \param col texel column.
1220  * \param row texel row.
1221  * \param img texel image level/layer.
1222  * \param texelOut output texel (up to 4 GLchans)
1223  */
1224 typedef void (*FetchTexelFuncC)( const struct gl_texture_image *texImage,
1225                                  GLint col, GLint row, GLint img,
1226                                  GLchan *texelOut );
1227
1228 /**
1229  * As above, but returns floats.
1230  * Used for depth component images and for upcoming signed/float
1231  * texture images.
1232  */
1233 typedef void (*FetchTexelFuncF)( const struct gl_texture_image *texImage,
1234                                  GLint col, GLint row, GLint img,
1235                                  GLfloat *texelOut );
1236
1237
1238 typedef void (*StoreTexelFunc)(struct gl_texture_image *texImage,
1239                                GLint col, GLint row, GLint img,
1240                                const void *texel);
1241
1242
1243 /**
1244  * This macro defines the (many) parameters to the texstore functions.
1245  * \param dims  either 1 or 2 or 3
1246  * \param baseInternalFormat  user-specified base internal format
1247  * \param dstFormat  destination Mesa texture format
1248  * \param dstAddr  destination image address
1249  * \param dstX/Y/Zoffset  destination x/y/z offset (ala TexSubImage), in texels
1250  * \param dstRowStride  destination image row stride, in bytes
1251  * \param dstImageOffsets  offset of each 2D slice within 3D texture, in texels
1252  * \param srcWidth/Height/Depth  source image size, in pixels
1253  * \param srcFormat  incoming image format
1254  * \param srcType  incoming image data type
1255  * \param srcAddr  source image address
1256  * \param srcPacking  source image packing parameters
1257  */
1258 #define TEXSTORE_PARAMS \
1259         GLcontext *ctx, GLuint dims, \
1260         GLenum baseInternalFormat, \
1261         const struct gl_texture_format *dstFormat, \
1262         GLvoid *dstAddr, \
1263         GLint dstXoffset, GLint dstYoffset, GLint dstZoffset, \
1264         GLint dstRowStride, const GLuint *dstImageOffsets, \
1265         GLint srcWidth, GLint srcHeight, GLint srcDepth, \
1266         GLenum srcFormat, GLenum srcType, \
1267         const GLvoid *srcAddr, \
1268         const struct gl_pixelstore_attrib *srcPacking
1269
1270
1271
1272 /**
1273  * Texture image storage function.
1274  */
1275 typedef GLboolean (*StoreTexImageFunc)(TEXSTORE_PARAMS);
1276
1277
1278 /**
1279  * Texture format record
1280  */
1281 struct gl_texture_format
1282 {
1283    GLint MesaFormat;            /**< One of the MESA_FORMAT_* values */
1284
1285    GLenum BaseFormat;           /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1286                                  *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1287                                  *   GL_INTENSITY, GL_COLOR_INDEX or
1288                                  *   GL_DEPTH_COMPONENT.
1289                                  */
1290    GLenum DataType;             /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1291
1292    /**
1293     * Bits per texel component.  These are just rough approximations
1294     * for compressed texture formats.
1295     */
1296    /*@{*/
1297    GLubyte RedBits;
1298    GLubyte GreenBits;
1299    GLubyte BlueBits;
1300    GLubyte AlphaBits;
1301    GLubyte LuminanceBits;
1302    GLubyte IntensityBits;
1303    GLubyte IndexBits;
1304    GLubyte DepthBits;
1305    GLubyte StencilBits;         /**< GL_EXT_packed_depth_stencil */
1306    /*@}*/
1307
1308    GLuint TexelBytes;           /**< Bytes per texel, 0 if compressed format */
1309
1310    StoreTexImageFunc StoreImage;
1311
1312    /**
1313     * \name Texel fetch function pointers
1314     */
1315    /*@{*/
1316    FetchTexelFuncC FetchTexel1D;
1317    FetchTexelFuncC FetchTexel2D;
1318    FetchTexelFuncC FetchTexel3D;
1319    FetchTexelFuncF FetchTexel1Df;
1320    FetchTexelFuncF FetchTexel2Df;
1321    FetchTexelFuncF FetchTexel3Df;
1322    /*@}*/
1323
1324    StoreTexelFunc StoreTexel;
1325 };
1326
1327
1328 /**
1329  * Texture image state.  Describes the dimensions of a texture image,
1330  * the texel format and pointers to Texel Fetch functions.
1331  */
1332 struct gl_texture_image
1333 {
1334    GLenum _BaseFormat;          /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1335                                  *   GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1336                                  *   GL_INTENSITY, GL_COLOR_INDEX,
1337                                  *   GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1338                                  *   only. Used for choosing TexEnv arithmetic.
1339                                  */
1340    GLint InternalFormat;        /**< Internal format as given by the user */
1341    GLuint Border;               /**< 0 or 1 */
1342    GLuint Width;                /**< = 2^WidthLog2 + 2*Border */
1343    GLuint Height;               /**< = 2^HeightLog2 + 2*Border */
1344    GLuint Depth;                /**< = 2^DepthLog2 + 2*Border */
1345    GLuint Width2;               /**< = Width - 2*Border */
1346    GLuint Height2;              /**< = Height - 2*Border */
1347    GLuint Depth2;               /**< = Depth - 2*Border */
1348    GLuint WidthLog2;            /**< = log2(Width2) */
1349    GLuint HeightLog2;           /**< = log2(Height2) */
1350    GLuint DepthLog2;            /**< = log2(Depth2) */
1351    GLuint MaxLog2;              /**< = MAX(WidthLog2, HeightLog2) */
1352    GLfloat WidthScale;          /**< used for mipmap LOD computation */
1353    GLfloat HeightScale;         /**< used for mipmap LOD computation */
1354    GLfloat DepthScale;          /**< used for mipmap LOD computation */
1355    GLboolean IsClientData;      /**< Data owned by client? */
1356    GLboolean _IsPowerOfTwo;     /**< Are all dimensions powers of two? */
1357
1358    const struct gl_texture_format *TexFormat;
1359
1360    struct gl_texture_object *TexObject;  /**< Pointer back to parent object */
1361
1362    FetchTexelFuncC FetchTexelc; /**< GLchan texel fetch function pointer */
1363    FetchTexelFuncF FetchTexelf; /**< Float texel fetch function pointer */
1364
1365    GLboolean IsCompressed;      /**< GL_ARB_texture_compression */
1366    GLuint CompressedSize;       /**< GL_ARB_texture_compression */
1367
1368    GLuint RowStride;            /**< == Width unless IsClientData and padded */
1369    GLuint *ImageOffsets;        /**< if 3D texture: array [Depth] of offsets to
1370                                      each 2D slice in 'Data', in texels */
1371    GLvoid *Data;                /**< Image data, accessed via FetchTexel() */
1372
1373    /**
1374     * \name For device driver:
1375     */
1376    /*@{*/
1377    void *DriverData;            /**< Arbitrary device driver data */
1378    /*@}*/
1379 };
1380
1381
1382 /**
1383  * Indexes for cube map faces.
1384  */
1385 /*@{*/
1386 #define FACE_POS_X   0
1387 #define FACE_NEG_X   1
1388 #define FACE_POS_Y   2
1389 #define FACE_NEG_Y   3
1390 #define FACE_POS_Z   4
1391 #define FACE_NEG_Z   5
1392 #define MAX_FACES    6
1393 /*@}*/
1394
1395
1396 /**
1397  * Texture object state.  Contains the array of mipmap images, border color,
1398  * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1399  * color palette.
1400  */
1401 struct gl_texture_object
1402 {
1403    _glthread_Mutex Mutex;       /**< for thread safety */
1404    GLint RefCount;              /**< reference count */
1405    GLuint Name;                 /**< the user-visible texture object ID */
1406    GLenum Target;               /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1407    GLfloat Priority;            /**< in [0,1] */
1408    GLfloat BorderColor[4];      /**< unclamped */
1409    GLchan _BorderChan[4];       /**< clamped, as GLchan */
1410    GLenum WrapS;                /**< S-axis texture image wrap mode */
1411    GLenum WrapT;                /**< T-axis texture image wrap mode */
1412    GLenum WrapR;                /**< R-axis texture image wrap mode */
1413    GLenum MinFilter;            /**< minification filter */
1414    GLenum MagFilter;            /**< magnification filter */
1415    GLfloat MinLod;              /**< min lambda, OpenGL 1.2 */
1416    GLfloat MaxLod;              /**< max lambda, OpenGL 1.2 */
1417    GLfloat LodBias;             /**< OpenGL 1.4 */
1418    GLint BaseLevel;             /**< min mipmap level, OpenGL 1.2 */
1419    GLint MaxLevel;              /**< max mipmap level, OpenGL 1.2 */
1420    GLfloat MaxAnisotropy;       /**< GL_EXT_texture_filter_anisotropic */
1421    GLboolean CompareFlag;       /**< GL_SGIX_shadow */
1422    GLenum CompareOperator;      /**< GL_SGIX_shadow */
1423    GLfloat ShadowAmbient;       /**< GL_ARB_shadow_ambient */
1424    GLenum CompareMode;          /**< GL_ARB_shadow */
1425    GLenum CompareFunc;          /**< GL_ARB_shadow */
1426    GLenum _Function;            /**< Comparison function derived from
1427                                  * \c CompareOperator, \c CompareMode, and
1428                                  * \c CompareFunc.
1429                                  */
1430    GLenum DepthMode;            /**< GL_ARB_depth_texture */
1431    GLint _MaxLevel;             /**< actual max mipmap level (q in the spec) */
1432    GLfloat _MaxLambda;          /**< = _MaxLevel - BaseLevel (q - b in spec) */
1433    GLboolean GenerateMipmap;    /**< GL_SGIS_generate_mipmap */
1434    GLboolean _Complete;         /**< Is texture object complete? */
1435
1436    /** Actual texture images, indexed by [cube face] and [mipmap level] */
1437    struct gl_texture_image *Image[MAX_FACES][MAX_TEXTURE_LEVELS];
1438
1439    /** GL_EXT_paletted_texture */
1440    struct gl_color_table Palette;
1441
1442
1443    /**
1444     * \name For device driver.
1445     * Note: instead of attaching driver data to this pointer, it's preferable
1446     * to instead use this struct as a base class for your own texture object
1447     * class.  Driver->NewTextureObject() can be used to implement the
1448     * allocation.
1449     */
1450    void *DriverData;    /**< Arbitrary device driver data */
1451 };
1452
1453
1454 /**
1455  * Texture combine environment state.
1456  *
1457  * \todo
1458  * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1459  * structure will need to be expanded for 4 elements.
1460  */
1461 struct gl_tex_env_combine_state
1462 {
1463    GLenum ModeRGB;       /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1464    GLenum ModeA;         /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1465    GLenum SourceRGB[3];  /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1466    GLenum SourceA[3];    /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1467    GLenum OperandRGB[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1468    GLenum OperandA[3];   /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1469    GLuint ScaleShiftRGB; /**< 0, 1 or 2 */
1470    GLuint ScaleShiftA;   /**< 0, 1 or 2 */
1471    GLuint _NumArgsRGB;   /**< Number of inputs used for the combine mode. */
1472    GLuint _NumArgsA;     /**< Number of inputs used for the combine mode. */
1473 };
1474
1475
1476 /**
1477  * Texture unit state.  Contains enable flags, texture environment/function/
1478  * combiners, texgen state, pointers to current texture objects and
1479  * post-filter color tables.
1480  */
1481 struct gl_texture_unit
1482 {
1483    GLbitfield Enabled;          /**< bitmask of TEXTURE_*_BIT flags */
1484    GLbitfield _ReallyEnabled;   /**< 0 or exactly one of TEXTURE_*_BIT flags */
1485
1486    GLenum EnvMode;              /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1487    GLfloat EnvColor[4];
1488    GLbitfield TexGenEnabled;    /**< Bitwise-OR of [STRQ]_BIT values */
1489    /** \name Tex coord generation mode
1490     * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1491    /*@{*/
1492    GLenum GenModeS;
1493    GLenum GenModeT;
1494    GLenum GenModeR;
1495    GLenum GenModeQ;
1496    /*@}*/
1497    GLbitfield _GenBitS;
1498    GLbitfield _GenBitT;
1499    GLbitfield _GenBitR;
1500    GLbitfield _GenBitQ;
1501    GLbitfield _GenFlags;        /**< bitwise or of _GenBit[STRQ] */
1502    GLfloat ObjectPlaneS[4];
1503    GLfloat ObjectPlaneT[4];
1504    GLfloat ObjectPlaneR[4];
1505    GLfloat ObjectPlaneQ[4];
1506    GLfloat EyePlaneS[4];
1507    GLfloat EyePlaneT[4];
1508    GLfloat EyePlaneR[4];
1509    GLfloat EyePlaneQ[4];
1510    GLfloat LodBias;             /**< for biasing mipmap levels */
1511
1512    /**
1513     * \name GL_EXT_texture_env_combine
1514     */
1515    struct gl_tex_env_combine_state Combine;
1516
1517    /**
1518     * Derived state based on \c EnvMode and the \c BaseFormat of the
1519     * currently enabled texture.
1520     */
1521    struct gl_tex_env_combine_state _EnvMode;
1522
1523    /**
1524     * Currently enabled combiner state.  This will point to either
1525     * \c Combine or \c _EnvMode.
1526     */
1527    struct gl_tex_env_combine_state *_CurrentCombine;
1528
1529    struct gl_texture_object *Current1D;
1530    struct gl_texture_object *Current2D;
1531    struct gl_texture_object *Current3D;
1532    struct gl_texture_object *CurrentCubeMap; /**< GL_ARB_texture_cube_map */
1533    struct gl_texture_object *CurrentRect;    /**< GL_NV_texture_rectangle */
1534    struct gl_texture_object *Current1DArray; /**< GL_MESA_texture_array */
1535    struct gl_texture_object *Current2DArray; /**< GL_MESA_texture_array */
1536
1537    struct gl_texture_object *_Current; /**< Points to really enabled tex obj */
1538
1539    /** GL_SGI_texture_color_table */
1540    /*@{*/
1541    struct gl_color_table ColorTable;
1542    struct gl_color_table ProxyColorTable;
1543    GLboolean ColorTableEnabled;
1544    /*@}*/
1545 };
1546
1547 struct texenvprog_cache_item {
1548    GLuint hash;
1549    void *key;
1550    struct gl_fragment_program *data;
1551    struct texenvprog_cache_item *next;
1552 };
1553
1554 struct texenvprog_cache {
1555    struct texenvprog_cache_item **items;
1556    GLuint size, n_items;
1557    GLcontext *ctx;
1558 };
1559
1560 /**
1561  * Texture attribute group (GL_TEXTURE_BIT).
1562  */
1563 struct gl_texture_attrib
1564 {
1565    /**
1566     * name multitexture
1567     */
1568    /**@{*/
1569    GLuint CurrentUnit;         /**< Active texture unit */
1570    GLbitfield _EnabledUnits;  /**< one bit set for each really-enabled unit */
1571    GLbitfield _EnabledCoordUnits;   /**< one bit per enabled coordinate unit */
1572    GLbitfield _GenFlags;            /**< for texgen */
1573    GLbitfield _TexGenEnabled;
1574    GLbitfield _TexMatEnabled;
1575    /**@}*/
1576
1577    struct gl_texture_unit Unit[MAX_TEXTURE_UNITS];
1578
1579    /** Proxy texture objects */
1580    struct gl_texture_object *ProxyTex[NUM_TEXTURE_TARGETS];
1581
1582    /** GL_EXT_shared_texture_palette */
1583    GLboolean SharedPalette;
1584    struct gl_color_table Palette;
1585
1586    /** Cached texenv fragment programs */
1587    struct texenvprog_cache env_fp_cache;
1588 };
1589
1590
1591 /**
1592  * Transformation attribute group (GL_TRANSFORM_BIT).
1593  */
1594 struct gl_transform_attrib
1595 {
1596    GLenum MatrixMode;                           /**< Matrix mode */
1597    GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];    /**< User clip planes */
1598    GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];  /**< derived */
1599    GLbitfield ClipPlanesEnabled;                /**< on/off bitmask */
1600    GLboolean Normalize;                         /**< Normalize all normals? */
1601    GLboolean RescaleNormals;                    /**< GL_EXT_rescale_normal */
1602    GLboolean RasterPositionUnclipped;           /**< GL_IBM_rasterpos_clip */
1603
1604    GLboolean CullVertexFlag;    /**< True if GL_CULL_VERTEX_EXT is enabled */
1605    GLfloat CullEyePos[4];
1606    GLfloat CullObjPos[4];
1607 };
1608
1609
1610 /**
1611  * Viewport attribute group (GL_VIEWPORT_BIT).
1612  */
1613 struct gl_viewport_attrib
1614 {
1615    GLint X, Y;                  /**< position */
1616    GLsizei Width, Height;       /**< size */
1617    GLfloat Near, Far;           /**< Depth buffer range */
1618    GLmatrix _WindowMap;         /**< Mapping transformation as a matrix. */
1619 };
1620
1621
1622 /**
1623  * Node for the attribute stack.
1624  */
1625 struct gl_attrib_node
1626 {
1627    GLbitfield kind;
1628    void *data;
1629    struct gl_attrib_node *next;
1630 };
1631
1632
1633 /**
1634  * GL_ARB_vertex/pixel_buffer_object buffer object
1635  */
1636 struct gl_buffer_object
1637 {
1638    GLint RefCount;
1639    GLuint Name;
1640    GLenum Usage;
1641    GLenum Access;
1642    GLvoid *Pointer;          /**< Only valid while buffer is mapped */
1643    GLsizeiptrARB Size;       /**< Size of storage in bytes */
1644    GLubyte *Data;            /**< Location of storage either in RAM or VRAM. */
1645    GLboolean OnCard;         /**< Is buffer in VRAM? (hardware drivers) */
1646 };
1647
1648
1649
1650 /**
1651  * Client pixel packing/unpacking attributes
1652  */
1653 struct gl_pixelstore_attrib
1654 {
1655    GLint Alignment;
1656    GLint RowLength;
1657    GLint SkipPixels;
1658    GLint SkipRows;
1659    GLint ImageHeight;     /**< for GL_EXT_texture3D */
1660    GLint SkipImages;      /**< for GL_EXT_texture3D */
1661    GLboolean SwapBytes;
1662    GLboolean LsbFirst;
1663    GLboolean ClientStorage; /**< GL_APPLE_client_storage */
1664    GLboolean Invert;        /**< GL_MESA_pack_invert */
1665    struct gl_buffer_object *BufferObj; /**< GL_ARB_pixel_buffer_object */
1666 };
1667
1668
1669
1670 /**
1671  * Client vertex array attributes
1672  */
1673 struct gl_client_array
1674 {
1675    GLint Size;                  /**< components per element (1,2,3,4) */
1676    GLenum Type;                 /**< datatype: GL_FLOAT, GL_INT, etc */
1677    GLsizei Stride;              /**< user-specified stride */
1678    GLsizei StrideB;             /**< actual stride in bytes */
1679    const GLubyte *Ptr;          /**< Points to array data */
1680    GLboolean Enabled;           /**< Enabled flag is a boolean */
1681    GLboolean Normalized;        /**< GL_ARB_vertex_program */
1682
1683    /**< GL_ARB_vertex_buffer_object */
1684    struct gl_buffer_object *BufferObj;
1685    GLuint _MaxElement;
1686 };
1687
1688
1689 /**
1690  * Collection of vertex arrays.  Defined by the GL_APPLE_vertex_array_object
1691  * extension, but a nice encapsulation in any case.
1692  */
1693 struct gl_array_object
1694 {
1695    /** Name of the array object as received from glGenVertexArrayAPPLE. */
1696    GLuint Name;
1697
1698    /** Conventional vertex arrays */
1699    /*@{*/
1700    struct gl_client_array Vertex;
1701    struct gl_client_array Normal;
1702    struct gl_client_array Color;
1703    struct gl_client_array SecondaryColor;
1704    struct gl_client_array FogCoord;
1705    struct gl_client_array Index;
1706    struct gl_client_array EdgeFlag;
1707    struct gl_client_array TexCoord[MAX_TEXTURE_COORD_UNITS];
1708    /*@}*/
1709
1710    /** Generic arrays for vertex programs/shaders */
1711    struct gl_client_array VertexAttrib[VERT_ATTRIB_MAX];
1712
1713    /** Mask of _NEW_ARRAY_* values indicating which arrays are enabled */
1714    GLbitfield _Enabled;
1715 };
1716
1717
1718 /**
1719  * Vertex array state
1720  */
1721 struct gl_array_attrib
1722 {
1723    struct gl_array_object *ArrayObj;
1724    struct gl_array_object *DefaultArrayObj;
1725
1726    GLint ActiveTexture;         /**< Client Active Texture */
1727    GLuint LockFirst;            /**< GL_EXT_compiled_vertex_array */
1728    GLuint LockCount;            /**< GL_EXT_compiled_vertex_array */
1729
1730    GLbitfield NewState;         /**< mask of _NEW_ARRAY_* values */
1731
1732 #if FEATURE_ARB_vertex_buffer_object
1733    struct gl_buffer_object *NullBufferObj;
1734    struct gl_buffer_object *ArrayBufferObj;
1735    struct gl_buffer_object *ElementArrayBufferObj;
1736 #endif
1737    GLuint _MaxElement;          /* Min of all enabled array's maxes */
1738 };
1739
1740
1741 /**
1742  * Feedback buffer state
1743  */
1744 struct gl_feedback
1745 {
1746    GLenum Type;
1747    GLbitfield _Mask;            /* FB_* bits */
1748    GLfloat *Buffer;
1749    GLuint BufferSize;
1750    GLuint Count;
1751 };
1752
1753
1754 /**
1755  * Selection buffer state
1756  */
1757 struct gl_selection
1758 {
1759    GLuint *Buffer;      /**< selection buffer */
1760    GLuint BufferSize;   /**< size of the selection buffer */
1761    GLuint BufferCount;  /**< number of values in the selection buffer */
1762    GLuint Hits;         /**< number of records in the selection buffer */
1763    GLuint NameStackDepth; /**< name stack depth */
1764    GLuint NameStack[MAX_NAME_STACK_DEPTH]; /**< name stack */
1765    GLboolean HitFlag;   /**< hit flag */
1766    GLfloat HitMinZ;     /**< minimum hit depth */
1767    GLfloat HitMaxZ;     /**< maximum hit depth */
1768 };
1769
1770
1771 /**
1772  * 1-D Evaluator control points
1773  */
1774 struct gl_1d_map
1775 {
1776    GLuint Order;        /**< Number of control points */
1777    GLfloat u1, u2, du;  /**< u1, u2, 1.0/(u2-u1) */
1778    GLfloat *Points;     /**< Points to contiguous control points */
1779 };
1780
1781
1782 /**
1783  * 2-D Evaluator control points
1784  */
1785 struct gl_2d_map
1786 {
1787    GLuint Uorder;               /**< Number of control points in U dimension */
1788    GLuint Vorder;               /**< Number of control points in V dimension */
1789    GLfloat u1, u2, du;
1790    GLfloat v1, v2, dv;
1791    GLfloat *Points;             /**< Points to contiguous control points */
1792 };
1793
1794
1795 /**
1796  * All evaluator control point state
1797  */
1798 struct gl_evaluators
1799 {
1800    /**
1801     * \name 1-D maps
1802     */
1803    /*@{*/
1804    struct gl_1d_map Map1Vertex3;
1805    struct gl_1d_map Map1Vertex4;
1806    struct gl_1d_map Map1Index;
1807    struct gl_1d_map Map1Color4;
1808    struct gl_1d_map Map1Normal;
1809    struct gl_1d_map Map1Texture1;
1810    struct gl_1d_map Map1Texture2;
1811    struct gl_1d_map Map1Texture3;
1812    struct gl_1d_map Map1Texture4;
1813    struct gl_1d_map Map1Attrib[16];  /**< GL_NV_vertex_program */
1814    /*@}*/
1815
1816    /**
1817     * \name 2-D maps
1818     */
1819    /*@{*/
1820    struct gl_2d_map Map2Vertex3;
1821    struct gl_2d_map Map2Vertex4;
1822    struct gl_2d_map Map2Index;
1823    struct gl_2d_map Map2Color4;
1824    struct gl_2d_map Map2Normal;
1825    struct gl_2d_map Map2Texture1;
1826    struct gl_2d_map Map2Texture2;
1827    struct gl_2d_map Map2Texture3;
1828    struct gl_2d_map Map2Texture4;
1829    struct gl_2d_map Map2Attrib[16];  /**< GL_NV_vertex_program */
1830    /*@}*/
1831 };
1832
1833
1834 /**
1835  * Names of the various vertex/fragment program register files, etc.
1836  *
1837  * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1838  * All values should fit in a 4-bit field.
1839  *
1840  * NOTE: PROGRAM_ENV_PARAM, PROGRAM_STATE_VAR, PROGRAM_NAMED_PARAM,
1841  * PROGRAM_CONSTANT, and PROGRAM_UNIFORM can all be considered to
1842  * be "uniform" variables since they can only be set outside glBegin/End.
1843  * They're also all stored in the same Parameters array.
1844  */
1845 enum register_file
1846 {
1847    PROGRAM_TEMPORARY = 0,   /**< machine->Temporary[] */
1848    PROGRAM_LOCAL_PARAM = 1, /**< gl_program->LocalParams[] */
1849    PROGRAM_ENV_PARAM = 2,   /**< gl_program->Parameters[] */
1850    PROGRAM_STATE_VAR = 3,   /**< gl_program->Parameters[] */
1851    PROGRAM_INPUT = 4,       /**< machine->Inputs[] */
1852    PROGRAM_OUTPUT = 5,      /**< machine->Outputs[] */
1853    PROGRAM_NAMED_PARAM = 6, /**< gl_program->Parameters[] */
1854    PROGRAM_CONSTANT = 7,    /**< gl_program->Parameters[] */
1855    PROGRAM_UNIFORM = 8,     /**< gl_program->Parameters[] */
1856    PROGRAM_VARYING = 9,     /**< machine->Inputs[]/Outputs[] */
1857    PROGRAM_WRITE_ONLY = 10, /**< A dummy, write-only register */
1858    PROGRAM_ADDRESS = 11,    /**< machine->AddressReg */
1859    PROGRAM_SAMPLER = 12,    /**< for shader samplers, compile-time only */
1860    PROGRAM_UNDEFINED = 13,  /**< Invalid value */
1861    PROGRAM_FILE_MAX
1862 };
1863
1864
1865 /** Vertex and fragment instructions */
1866 struct prog_instruction;
1867 struct gl_program_parameter_list;
1868
1869
1870 /**
1871  * Base class for any kind of program object
1872  */
1873 struct gl_program
1874 {
1875    GLuint Id;
1876    GLubyte *String;  /**< Null-terminated program text */
1877    GLint RefCount;
1878    GLenum Target;    /**< GL_VERTEX/FRAGMENT_PROGRAM_ARB, GL_FRAGMENT_PROGRAM_NV */
1879    GLenum Format;    /**< String encoding format */
1880    GLboolean Resident;
1881
1882    struct prog_instruction *Instructions;
1883
1884    GLbitfield InputsRead;     /**< Bitmask of which input regs are read */
1885    GLbitfield OutputsWritten; /**< Bitmask of which output regs are written to */
1886    GLbitfield TexturesUsed[MAX_TEXTURE_IMAGE_UNITS];  /**< TEXTURE_x_BIT bitmask */
1887    GLbitfield ShadowSamplers; /**< Texture units used for shadow sampling. */
1888
1889    /** Named parameters, constants, etc. from program text */
1890    struct gl_program_parameter_list *Parameters;
1891    /** Numbered local parameters */
1892    GLfloat LocalParams[MAX_PROGRAM_LOCAL_PARAMS][4];
1893
1894    /** Vertex/fragment shader varying vars */
1895    struct gl_program_parameter_list *Varying;
1896    /** Vertex program user-defined attributes */
1897    struct gl_program_parameter_list *Attributes;
1898
1899    /** Logical counts */
1900    /*@{*/
1901    GLuint NumInstructions;
1902    GLuint NumTemporaries;
1903    GLuint NumParameters;
1904    GLuint NumAttributes;
1905    GLuint NumAddressRegs;
1906    GLuint NumAluInstructions;
1907    GLuint NumTexInstructions;
1908    GLuint NumTexIndirections;
1909    /*@}*/
1910    /** Native, actual h/w counts */
1911    /*@{*/
1912    GLuint NumNativeInstructions;
1913    GLuint NumNativeTemporaries;
1914    GLuint NumNativeParameters;
1915    GLuint NumNativeAttributes;
1916    GLuint NumNativeAddressRegs;
1917    GLuint NumNativeAluInstructions;
1918    GLuint NumNativeTexInstructions;
1919    GLuint NumNativeTexIndirections;
1920    /*@}*/
1921 };
1922
1923
1924 /** Vertex program object */
1925 struct gl_vertex_program
1926 {
1927    struct gl_program Base;   /**< base class */
1928    GLboolean IsNVProgram;    /**< is this a GL_NV_vertex_program program? */
1929    GLboolean IsPositionInvariant;
1930    void *TnlData;               /**< should probably use Base.DriverData */
1931 };
1932
1933
1934 /** Fragment program object */
1935 struct gl_fragment_program
1936 {
1937    struct gl_program Base;   /**< base class */
1938    GLenum FogOption;
1939    GLboolean UsesKill;
1940 };
1941
1942
1943 /**
1944  * State common to vertex and fragment programs.
1945  */
1946 struct gl_program_state
1947 {
1948    GLint ErrorPos;                       /* GL_PROGRAM_ERROR_POSITION_ARB/NV */
1949    const char *ErrorString;              /* GL_PROGRAM_ERROR_STRING_ARB/NV */
1950 };
1951
1952
1953 /**
1954  * Context state for vertex programs.
1955  */
1956 struct gl_vertex_program_state
1957 {
1958    GLboolean Enabled;               /**< GL_VERTEX_PROGRAM_ARB/NV */
1959    GLboolean _Enabled;              /**< Enabled and valid program? */
1960    GLboolean PointSizeEnabled;      /**< GL_VERTEX_PROGRAM_POINT_SIZE_ARB/NV */
1961    GLboolean TwoSideEnabled;        /**< GL_VERTEX_PROGRAM_TWO_SIDE_ARB/NV */
1962    struct gl_vertex_program *Current;  /**< user-bound vertex program */
1963
1964    /** Currently enabled and valid program (including internal programs
1965     * and compiled shader programs).
1966     */
1967    struct gl_vertex_program *_Current;
1968
1969    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
1970
1971    /* For GL_NV_vertex_program only: */
1972    GLenum TrackMatrix[MAX_PROGRAM_ENV_PARAMS / 4];
1973    GLenum TrackMatrixTransform[MAX_PROGRAM_ENV_PARAMS / 4];
1974
1975    /** Should fixed-function T&L be implemented with a vertex prog? */
1976    GLboolean _MaintainTnlProgram;
1977
1978    /** Program to emulate fixed-function T&L (see above) */
1979    struct gl_vertex_program *_TnlProgram;
1980
1981 #if FEATURE_MESA_program_debug
1982    GLprogramcallbackMESA Callback;
1983    GLvoid *CallbackData;
1984    GLboolean CallbackEnabled;
1985    GLuint CurrentPosition;
1986 #endif
1987 };
1988
1989
1990 /**
1991  * Context state for fragment programs.
1992  */
1993 struct gl_fragment_program_state
1994 {
1995    GLboolean Enabled;     /**< User-set fragment program enable flag */
1996    GLboolean _Enabled;    /**< Fragment program enabled and valid? */
1997    GLboolean _Active;
1998    struct gl_fragment_program *Current;  /**< User-bound fragment program */
1999
2000    /** Currently enabled and valid program (including internal programs
2001     * and compiled shader programs).
2002     */
2003    struct gl_fragment_program *_Current;
2004
2005    GLfloat Parameters[MAX_PROGRAM_ENV_PARAMS][4]; /**< Env params */
2006
2007    /** Should fixed-function texturing be implemented with a fragment prog? */
2008    GLboolean _MaintainTexEnvProgram;
2009    GLboolean _UseTexEnvProgram;
2010
2011    /** Program to emulate fixed-function texture env/combine (see above) */
2012    struct gl_fragment_program *_TexEnvProgram;
2013
2014 #if FEATURE_MESA_program_debug
2015    GLprogramcallbackMESA Callback;
2016    GLvoid *CallbackData;
2017    GLboolean CallbackEnabled;
2018    GLuint CurrentPosition;
2019 #endif
2020 };
2021
2022
2023 /**
2024  * ATI_fragment_shader runtime state
2025  */
2026 #define ATI_FS_INPUT_PRIMARY 0
2027 #define ATI_FS_INPUT_SECONDARY 1
2028
2029 struct atifs_instruction;
2030 struct atifs_setupinst;
2031
2032 /**
2033  * ATI fragment shader
2034  */
2035 struct ati_fragment_shader
2036 {
2037    GLuint Id;
2038    GLint RefCount;
2039    struct atifs_instruction *Instructions[2];
2040    struct atifs_setupinst *SetupInst[2];
2041    GLfloat Constants[8][4];
2042    GLbitfield LocalConstDef;  /** Indicates which constants have been set */
2043    GLubyte numArithInstr[2];
2044    GLubyte regsAssigned[2];
2045    GLubyte NumPasses;         /** 1 or 2 */
2046    GLubyte cur_pass;
2047    GLubyte last_optype;
2048    GLboolean interpinp1;
2049    GLboolean isValid;
2050    GLuint swizzlerq;
2051 };
2052
2053 /**
2054  * Context state for GL_ATI_fragment_shader
2055  */
2056 struct gl_ati_fragment_shader_state
2057 {
2058    GLboolean Enabled;
2059    GLboolean _Enabled;                      /** enabled and valid shader? */
2060    GLboolean Compiling;
2061    GLfloat GlobalConstants[8][4];
2062    struct ati_fragment_shader *Current;
2063 };
2064
2065
2066 /**
2067  * Occlusion/timer query object.
2068  */
2069 struct gl_query_object
2070 {
2071    GLuint Id;
2072    GLuint64EXT Result; /* the counter */
2073    GLboolean Active;   /* inside Begin/EndQuery */
2074    GLboolean Ready;    /* result is ready */
2075 };
2076
2077
2078 /**
2079  * Context state for query objects.
2080  */
2081 struct gl_query_state
2082 {
2083    struct _mesa_HashTable *QueryObjects;
2084    struct gl_query_object *CurrentOcclusionObject; /* GL_ARB_occlusion_query */
2085    struct gl_query_object *CurrentTimerObject;     /* GL_EXT_timer_query */
2086 };
2087
2088
2089
2090 /**
2091  * A GLSL shader object.
2092  */
2093 struct gl_shader
2094 {
2095    GLenum Type;  /**< GL_FRAGMENT_SHADER || GL_VERTEX_SHADER (first field!) */
2096    GLuint Name;  /**< AKA the handle */
2097    GLint RefCount;  /**< Reference count */
2098    GLboolean DeletePending;
2099
2100    const GLchar *Source;  /**< Source code string */
2101    GLboolean CompileStatus;
2102    GLuint NumPrograms;  /**< size of Programs[] array */
2103    struct gl_program **Programs;  /**< Post-compile assembly code */
2104    GLchar *InfoLog;
2105 };
2106
2107
2108 /**
2109  * A GLSL program object.  Basically a linked collection of "shaders".
2110  */
2111 struct gl_shader_program
2112 {
2113    GLenum Type;  /**< Always GL_SHADER_PROGRAM (internal token) */
2114    GLuint Name;  /**< aka handle or ID */
2115    GLint RefCount;  /**< Reference count */
2116    GLboolean DeletePending;
2117
2118    GLuint NumShaders;          /**< number of attached shaders */
2119    struct gl_shader **Shaders; /**< List of attached the shaders */
2120
2121    /* post-link info: */
2122    struct gl_vertex_program *VertexProgram;     /**< Linked vertex program */
2123    struct gl_fragment_program *FragmentProgram; /**< Linked fragment prog */
2124    struct gl_program_parameter_list *Uniforms; /**< Plus constants, etc */
2125    struct gl_program_parameter_list *Varying;
2126    struct gl_program_parameter_list *Attributes; /**< Vertex attributes */
2127    GLboolean LinkStatus;   /**< GL_LINK_STATUS */
2128    GLboolean Validated;
2129    GLchar *InfoLog;
2130 };
2131
2132
2133 /**
2134  * Context state for GLSL vertex/fragment shaders.
2135  */
2136 struct gl_shader_state
2137 {
2138    struct gl_shader_program *CurrentProgram; /**< The user-bound program */
2139    /** Driver-selectable options: */
2140    GLboolean EmitHighLevelInstructions; /**< IF/ELSE/ENDIF vs. BRA, etc. */
2141    GLboolean EmitCondCodes;             /**< Use condition codes? */
2142    GLboolean EmitComments;              /**< Annotated instructions */
2143    void *MemPool;
2144 };
2145
2146
2147 /**
2148  * State which can be shared by multiple contexts:
2149  */
2150 struct gl_shared_state
2151 {
2152    _glthread_Mutex Mutex;                  /**< for thread safety */
2153    GLint RefCount;                         /**< Reference count */
2154    struct _mesa_HashTable *DisplayList;    /**< Display lists hash table */
2155    struct _mesa_HashTable *TexObjects;     /**< Texture objects hash table */
2156
2157    /**
2158     * \name Default texture objects (shared by all multi-texture units)
2159     */
2160    /*@{*/
2161    struct gl_texture_object *Default1D;
2162    struct gl_texture_object *Default2D;
2163    struct gl_texture_object *Default3D;
2164    struct gl_texture_object *DefaultCubeMap;
2165    struct gl_texture_object *DefaultRect;
2166    struct gl_texture_object *Default1DArray;
2167    struct gl_texture_object *Default2DArray;
2168    /*@}*/
2169
2170    /**
2171     * \name Thread safety and statechange notification for texture
2172     * objects.
2173     *
2174     * \todo Improve the granularity of locking.
2175     */
2176    /*@{*/
2177    _glthread_Mutex TexMutex;            /**< texobj thread safety */
2178    GLuint TextureStateStamp;            /**< state notification for shared tex */
2179    /*@}*/
2180
2181
2182    /**
2183     * \name Vertex/fragment programs
2184     */
2185    /*@{*/
2186    struct _mesa_HashTable *Programs; /**< All vertex/fragment programs */
2187 #if FEATURE_ARB_vertex_program
2188    struct gl_program *DefaultVertexProgram;
2189 #endif
2190 #if FEATURE_ARB_fragment_program
2191    struct gl_program *DefaultFragmentProgram;
2192 #endif
2193    /*@}*/
2194
2195 #if FEATURE_ATI_fragment_shader
2196    struct _mesa_HashTable *ATIShaders;
2197    struct ati_fragment_shader *DefaultFragmentShader;
2198 #endif
2199
2200 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
2201    struct _mesa_HashTable *BufferObjects;
2202 #endif
2203
2204 #if FEATURE_ARB_shader_objects
2205    /** Table of both gl_shader and gl_shader_program objects */
2206    struct _mesa_HashTable *ShaderObjects;
2207 #endif
2208
2209 #if FEATURE_EXT_framebuffer_object
2210    struct _mesa_HashTable *RenderBuffers;
2211    struct _mesa_HashTable *FrameBuffers;
2212 #endif
2213
2214    /** Objects associated with the GL_APPLE_vertex_array_object extension. */
2215    struct _mesa_HashTable *ArrayObjects;
2216
2217    void *DriverData;  /**< Device driver shared state */
2218 };
2219
2220
2221
2222
2223 /**
2224  * A renderbuffer stores colors or depth values or stencil values.
2225  * A framebuffer object will have a collection of these.
2226  * Data are read/written to the buffer with a handful of Get/Put functions.
2227  *
2228  * Instances of this object are allocated with the Driver's NewRenderbuffer
2229  * hook.  Drivers will likely wrap this class inside a driver-specific
2230  * class to simulate inheritance.
2231  */
2232 struct gl_renderbuffer
2233 {
2234 #define RB_MAGIC 0xaabbccdd
2235    int Magic; /** XXX TEMPORARY DEBUG INFO */
2236    _glthread_Mutex Mutex;                  /**< for thread safety */
2237    GLuint ClassID;        /**< Useful for drivers */
2238    GLuint Name;
2239    GLint RefCount;
2240    GLuint Width, Height;
2241    GLenum InternalFormat; /**< The user-specified format */
2242    GLenum _ActualFormat;  /**< The driver-chosen format */
2243    GLenum _BaseFormat;    /**< Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or
2244                                GL_STENCIL_INDEX. */
2245    GLenum DataType;      /**< Type of values passed to the Get/Put functions */
2246    GLubyte RedBits;      /**< Bits of red per pixel */
2247    GLubyte GreenBits;
2248    GLubyte BlueBits;
2249    GLubyte AlphaBits;
2250    GLubyte IndexBits;
2251    GLubyte DepthBits;
2252    GLubyte StencilBits;
2253    GLvoid *Data;        /**< This may not be used by some kinds of RBs */
2254
2255    /* Used to wrap one renderbuffer around another: */
2256    struct gl_renderbuffer *Wrapped;
2257
2258    /* Delete this renderbuffer */
2259    void (*Delete)(struct gl_renderbuffer *rb);
2260
2261    /* Allocate new storage for this renderbuffer */
2262    GLboolean (*AllocStorage)(GLcontext *ctx, struct gl_renderbuffer *rb,
2263                              GLenum internalFormat,
2264                              GLuint width, GLuint height);
2265
2266    /* Lock/Unlock are called before/after calling the Get/Put functions.
2267     * Not sure this is the right place for these yet.
2268    void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2269    void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2270     */
2271
2272    /* Return a pointer to the element/pixel at (x,y).
2273     * Should return NULL if the buffer memory can't be directly addressed.
2274     */
2275    void *(*GetPointer)(GLcontext *ctx, struct gl_renderbuffer *rb,
2276                        GLint x, GLint y);
2277
2278    /* Get/Read a row of values.
2279     * The values will be of format _BaseFormat and type DataType.
2280     */
2281    void (*GetRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2282                   GLint x, GLint y, void *values);
2283
2284    /* Get/Read values at arbitrary locations.
2285     * The values will be of format _BaseFormat and type DataType.
2286     */
2287    void (*GetValues)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2288                      const GLint x[], const GLint y[], void *values);
2289
2290    /* Put/Write a row of values.
2291     * The values will be of format _BaseFormat and type DataType.
2292     */
2293    void (*PutRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2294                   GLint x, GLint y, const void *values, const GLubyte *mask);
2295
2296    /* Put/Write a row of RGB values.  This is a special-case routine that's
2297     * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2298     * a common case for glDrawPixels and some triangle routines.
2299     * The values will be of format GL_RGB and type DataType.
2300     */
2301    void (*PutRowRGB)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2302                     GLint x, GLint y, const void *values, const GLubyte *mask);
2303
2304
2305    /* Put/Write a row of identical values.
2306     * The values will be of format _BaseFormat and type DataType.
2307     */
2308    void (*PutMonoRow)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2309                      GLint x, GLint y, const void *value, const GLubyte *mask);
2310
2311    /* Put/Write values at arbitrary locations.
2312     * The values will be of format _BaseFormat and type DataType.
2313     */
2314    void (*PutValues)(GLcontext *ctx, struct gl_renderbuffer *rb, GLuint count,
2315                      const GLint x[], const GLint y[], const void *values,
2316                      const GLubyte *mask);
2317    /* Put/Write identical values at arbitrary locations.
2318     * The values will be of format _BaseFormat and type DataType.
2319     */
2320    void (*PutMonoValues)(GLcontext *ctx, struct gl_renderbuffer *rb,
2321                          GLuint count, const GLint x[], const GLint y[],
2322                          const void *value, const GLubyte *mask);
2323 };
2324
2325
2326 /**
2327  * A renderbuffer attachment point points to either a texture object
2328  * (and specifies a mipmap level, cube face or 3D texture slice) or
2329  * points to a renderbuffer.
2330  */
2331 struct gl_renderbuffer_attachment
2332 {
2333    GLenum Type;  /**< \c GL_NONE or \c GL_TEXTURE or \c GL_RENDERBUFFER_EXT */
2334    GLboolean Complete;
2335
2336    /**
2337     * If \c Type is \c GL_RENDERBUFFER_EXT, this stores a pointer to the
2338     * application supplied renderbuffer object.
2339     */
2340    struct gl_renderbuffer *Renderbuffer;
2341
2342    /**
2343     * If \c Type is \c GL_TEXTURE, this stores a pointer to the application
2344     * supplied texture object.
2345     */
2346    struct gl_texture_object *Texture;
2347    GLuint TextureLevel; /**< Attached mipmap level. */
2348    GLuint CubeMapFace;  /**< 0 .. 5, for cube map textures. */
2349    GLuint Zoffset;      /**< Slice for 3D textures,  or layer for both 1D
2350                          * and 2D array textures */
2351 };
2352
2353
2354 /**
2355  * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2356  * In C++ terms, think of this as a base class from which device drivers
2357  * will make derived classes.
2358  */
2359 struct gl_framebuffer
2360 {
2361    _glthread_Mutex Mutex;                  /**< for thread safety */
2362    GLuint Name;      /* if zero, this is a window system framebuffer */
2363    GLint RefCount;
2364    GLboolean DeletePending;
2365
2366    GLvisual Visual;     /**< The framebuffer's visual.
2367                              Immutable if this is a window system buffer.
2368                              Computed from attachments if user-made FBO. */
2369
2370    GLboolean Initialized;
2371
2372    GLuint Width, Height;        /**< size of frame buffer in pixels */
2373
2374    /** \name  Drawing bounds (Intersection of buffer size and scissor box) */
2375    /*@{*/
2376    GLint _Xmin, _Xmax;  /**< inclusive */
2377    GLint _Ymin, _Ymax;  /**< exclusive */
2378    /*@}*/
2379
2380    /** \name  Derived Z buffer stuff */
2381    /*@{*/
2382    GLuint _DepthMax;    /**< Max depth buffer value */
2383    GLfloat _DepthMaxF;  /**< Float max depth buffer value */
2384    GLfloat _MRD;        /**< minimum resolvable difference in Z values */
2385    /*@}*/
2386
2387    GLenum _Status; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2388
2389    /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2390    struct gl_renderbuffer_attachment Attachment[BUFFER_COUNT];
2391
2392    /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2393     * attribute group and GL_PIXEL attribute group, respectively.
2394     */
2395    GLenum ColorDrawBuffer[MAX_DRAW_BUFFERS];
2396    GLenum ColorReadBuffer;
2397
2398    /* These are computed from ColorDrawBuffer and ColorReadBuffer */
2399    GLbitfield _ColorDrawBufferMask[MAX_DRAW_BUFFERS]; /* Mask of BUFFER_BIT_* flags */
2400    GLint _ColorReadBufferIndex; /* -1 = None */
2401
2402    /* These are computed from _ColorDrawBufferMask and _ColorReadBufferIndex */
2403    GLuint _NumColorDrawBuffers[MAX_DRAW_BUFFERS];
2404    struct gl_renderbuffer *_ColorDrawBuffers[MAX_DRAW_BUFFERS][4];
2405    struct gl_renderbuffer *_ColorReadBuffer;
2406
2407    /** The Actual depth/stencil buffers to use.  May be wrappers around the
2408     * depth/stencil buffers attached above. */
2409    struct gl_renderbuffer *_DepthBuffer;
2410    struct gl_renderbuffer *_StencilBuffer;
2411
2412    /** Delete this framebuffer */
2413    void (*Delete)(struct gl_framebuffer *fb);
2414 };
2415
2416
2417 /**
2418  * Limits for vertex and fragment programs.
2419  */
2420 struct gl_program_constants
2421 {
2422    /* logical limits */
2423    GLuint MaxInstructions;
2424    GLuint MaxAluInstructions; /* fragment programs only, for now */
2425    GLuint MaxTexInstructions; /* fragment programs only, for now */
2426    GLuint MaxTexIndirections; /* fragment programs only, for now */
2427    GLuint MaxAttribs;
2428    GLuint MaxTemps;
2429    GLuint MaxAddressRegs; /* vertex program only, for now */
2430    GLuint MaxParameters;
2431    GLuint MaxLocalParams;
2432    GLuint MaxEnvParams;
2433    /* native/hardware limits */
2434    GLuint MaxNativeInstructions;
2435    GLuint MaxNativeAluInstructions; /* fragment programs only, for now */
2436    GLuint MaxNativeTexInstructions; /* fragment programs only, for now */
2437    GLuint MaxNativeTexIndirections; /* fragment programs only, for now */
2438    GLuint MaxNativeAttribs;
2439    GLuint MaxNativeTemps;
2440    GLuint MaxNativeAddressRegs; /* vertex program only, for now */
2441    GLuint MaxNativeParameters;
2442    /* For shaders */
2443    GLuint MaxUniformComponents;
2444 };
2445
2446
2447 /**
2448  * Constants which may be overridden by device driver during context creation
2449  * but are never changed after that.
2450  */
2451 struct gl_constants
2452 {
2453    GLint MaxTextureLevels;              /**< Maximum number of allowed mipmap levels. */
2454    GLint Max3DTextureLevels;            /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2455    GLint MaxCubeTextureLevels;          /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2456    GLint MaxArrayTextureLayers;         /**< Maximum number of layers in an array texture. */
2457    GLint MaxTextureRectSize;            /* GL_NV_texture_rectangle */
2458    GLuint MaxTextureCoordUnits;
2459    GLuint MaxTextureImageUnits;
2460    GLuint MaxTextureUnits;              /* = MIN(CoordUnits, ImageUnits) */
2461    GLfloat MaxTextureMaxAnisotropy;     /* GL_EXT_texture_filter_anisotropic */
2462    GLfloat MaxTextureLodBias;           /* GL_EXT_texture_lod_bias */
2463    GLuint MaxArrayLockSize;
2464    GLint SubPixelBits;
2465    GLfloat MinPointSize, MaxPointSize;          /* aliased */
2466    GLfloat MinPointSizeAA, MaxPointSizeAA;      /* antialiased */
2467    GLfloat PointSizeGranularity;
2468    GLfloat MinLineWidth, MaxLineWidth;          /* aliased */
2469    GLfloat MinLineWidthAA, MaxLineWidthAA;      /* antialiased */
2470    GLfloat LineWidthGranularity;
2471    GLuint MaxColorTableSize;
2472    GLuint MaxConvolutionWidth;
2473    GLuint MaxConvolutionHeight;
2474    GLuint MaxClipPlanes;
2475    GLuint MaxLights;
2476    GLfloat MaxShininess;                        /* GL_NV_light_max_exponent */
2477    GLfloat MaxSpotExponent;                     /* GL_NV_light_max_exponent */
2478    GLuint MaxViewportWidth, MaxViewportHeight;
2479    struct gl_program_constants VertexProgram;    /* GL_ARB_vertex_program */
2480    struct gl_program_constants FragmentProgram;  /* GL_ARB_fragment_program */
2481    /* shared by vertex and fragment program: */
2482    GLuint MaxProgramMatrices;
2483    GLuint MaxProgramMatrixStackDepth;
2484    /* vertex array / buffer object bounds checking */
2485    GLboolean CheckArrayBounds;
2486    /* GL_ARB_draw_buffers */
2487    GLuint MaxDrawBuffers;
2488    /* GL_OES_read_format */
2489    GLenum ColorReadFormat;
2490    GLenum ColorReadType;
2491    /* GL_EXT_framebuffer_object */
2492    GLuint MaxColorAttachments;
2493    GLuint MaxRenderbufferSize;
2494    /* GL_ARB_vertex_shader */
2495    GLuint MaxVertexTextureImageUnits;
2496    GLuint MaxVarying;
2497 };
2498
2499
2500 /**
2501  * Enable flag for each OpenGL extension.  Different device drivers will
2502  * enable different extensions at runtime.
2503  */
2504 struct gl_extensions
2505 {
2506    /**
2507     * \name Flags to quickly test if certain extensions are available.
2508     *
2509     * Not every extension needs to have such a flag, but it's encouraged.
2510     */
2511    /*@{*/
2512    GLboolean dummy;  /* don't remove this! */
2513    GLboolean ARB_depth_texture;
2514    GLboolean ARB_draw_buffers;
2515    GLboolean ARB_fragment_program;
2516    GLboolean ARB_fragment_program_shadow;
2517    GLboolean ARB_fragment_shader;
2518    GLboolean ARB_half_float_pixel;
2519    GLboolean ARB_imaging;
2520    GLboolean ARB_multisample;
2521    GLboolean ARB_multitexture;
2522    GLboolean ARB_occlusion_query;
2523    GLboolean ARB_point_sprite;
2524    GLboolean ARB_shader_objects;
2525    GLboolean ARB_shading_language_100;
2526    GLboolean ARB_shading_language_120;
2527    GLboolean ARB_shadow;
2528    GLboolean ARB_texture_border_clamp;
2529    GLboolean ARB_texture_compression;
2530    GLboolean ARB_texture_cube_map;
2531    GLboolean ARB_texture_env_combine;
2532    GLboolean ARB_texture_env_crossbar;
2533    GLboolean ARB_texture_env_dot3;
2534    GLboolean ARB_texture_float;
2535    GLboolean ARB_texture_mirrored_repeat;
2536    GLboolean ARB_texture_non_power_of_two;
2537    GLboolean ARB_transpose_matrix;
2538    GLboolean ARB_vertex_buffer_object;
2539    GLboolean ARB_vertex_program;
2540    GLboolean ARB_vertex_shader;
2541    GLboolean ARB_window_pos;
2542    GLboolean EXT_abgr;
2543    GLboolean EXT_bgra;
2544    GLboolean EXT_blend_color;
2545    GLboolean EXT_blend_equation_separate;
2546    GLboolean EXT_blend_func_separate;
2547    GLboolean EXT_blend_logic_op;
2548    GLboolean EXT_blend_minmax;
2549    GLboolean EXT_blend_subtract;
2550    GLboolean EXT_clip_volume_hint;
2551    GLboolean EXT_cull_vertex;
2552    GLboolean EXT_convolution;
2553    GLboolean EXT_compiled_vertex_array;
2554    GLboolean EXT_copy_texture;
2555    GLboolean EXT_depth_bounds_test;
2556    GLboolean EXT_draw_range_elements;
2557    GLboolean EXT_framebuffer_object;
2558    GLboolean EXT_fog_coord;
2559    GLboolean EXT_framebuffer_blit;
2560    GLboolean EXT_gpu_program_parameters;
2561    GLboolean EXT_histogram;
2562    GLboolean EXT_multi_draw_arrays;
2563    GLboolean EXT_paletted_texture;
2564    GLboolean EXT_packed_depth_stencil;
2565    GLboolean EXT_packed_pixels;
2566    GLboolean EXT_pixel_buffer_object;
2567    GLboolean EXT_point_parameters;
2568    GLboolean EXT_polygon_offset;
2569    GLboolean EXT_rescale_normal;
2570    GLboolean EXT_shadow_funcs;
2571    GLboolean EXT_secondary_color;
2572    GLboolean EXT_separate_specular_color;
2573    GLboolean EXT_shared_texture_palette;
2574    GLboolean EXT_stencil_wrap;
2575    GLboolean EXT_stencil_two_side;
2576    GLboolean EXT_subtexture;
2577    GLboolean EXT_texture;
2578    GLboolean EXT_texture_object;
2579    GLboolean EXT_texture3D;
2580    GLboolean EXT_texture_compression_s3tc;
2581    GLboolean EXT_texture_env_add;
2582    GLboolean EXT_texture_env_combine;
2583    GLboolean EXT_texture_env_dot3;
2584    GLboolean EXT_texture_filter_anisotropic;
2585    GLboolean EXT_texture_lod_bias;
2586    GLboolean EXT_texture_mirror_clamp;
2587    GLboolean EXT_texture_sRGB;
2588    GLboolean EXT_timer_query;
2589    GLboolean EXT_vertex_array;
2590    GLboolean EXT_vertex_array_set;
2591    /* vendor extensions */
2592    GLboolean APPLE_client_storage;
2593    GLboolean APPLE_packed_pixels;
2594    GLboolean APPLE_vertex_array_object;
2595    GLboolean ATI_texture_mirror_once;
2596    GLboolean ATI_texture_env_combine3;
2597    GLboolean ATI_fragment_shader;
2598    GLboolean ATI_separate_stencil;
2599    GLboolean IBM_rasterpos_clip;
2600    GLboolean IBM_multimode_draw_arrays;
2601    GLboolean MESA_pack_invert;
2602    GLboolean MESA_packed_depth_stencil;
2603    GLboolean MESA_program_debug;
2604    GLboolean MESA_resize_buffers;
2605    GLboolean MESA_ycbcr_texture;
2606    GLboolean MESA_texture_array;
2607    GLboolean NV_blend_square;
2608    GLboolean NV_fragment_program;
2609    GLboolean NV_light_max_exponent;
2610    GLboolean NV_point_sprite;
2611    GLboolean NV_texgen_reflection;
2612    GLboolean NV_texture_rectangle;
2613    GLboolean NV_vertex_program;
2614    GLboolean NV_vertex_program1_1;
2615    GLboolean OES_read_format;
2616    GLboolean SGI_color_matrix;
2617    GLboolean SGI_color_table;
2618    GLboolean SGI_texture_color_table;
2619    GLboolean SGIS_generate_mipmap;
2620    GLboolean SGIS_texture_edge_clamp;
2621    GLboolean SGIS_texture_lod;
2622    GLboolean SGIX_depth_texture;
2623    GLboolean SGIX_shadow;
2624    GLboolean SGIX_shadow_ambient; /* or GL_ARB_shadow_ambient */
2625    GLboolean TDFX_texture_compression_FXT1;
2626    GLboolean S3_s3tc;
2627    /*@}*/
2628    /* The extension string */
2629    const GLubyte *String;
2630 };
2631
2632
2633 /**
2634  * A stack of matrices (projection, modelview, color, texture, etc).
2635  */
2636 struct gl_matrix_stack
2637 {
2638    GLmatrix *Top;      /**< points into Stack */
2639    GLmatrix *Stack;    /**< array [MaxDepth] of GLmatrix */
2640    GLuint Depth;       /**< 0 <= Depth < MaxDepth */
2641    GLuint MaxDepth;    /**< size of Stack[] array */
2642    GLuint DirtyFlag;   /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2643 };
2644
2645
2646 /**
2647  * \name Bits for image transfer operations
2648  *
2649  * \sa __GLcontextRec::ImageTransferState.
2650  */
2651 /*@{*/
2652 #define IMAGE_SCALE_BIAS_BIT                      0x1
2653 #define IMAGE_SHIFT_OFFSET_BIT                    0x2
2654 #define IMAGE_MAP_COLOR_BIT                       0x4
2655 #define IMAGE_COLOR_TABLE_BIT                     0x8
2656 #define IMAGE_CONVOLUTION_BIT                     0x10
2657 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS         0x20
2658 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT    0x40
2659 #define IMAGE_COLOR_MATRIX_BIT                    0x80
2660 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT   0x100
2661 #define IMAGE_HISTOGRAM_BIT                       0x200
2662 #define IMAGE_MIN_MAX_BIT                         0x400
2663 #define IMAGE_CLAMP_BIT                           0x800 /* extra */
2664
2665
2666 /** Pixel Transfer ops up to convolution */
2667 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT |     \
2668                                     IMAGE_SHIFT_OFFSET_BIT |   \
2669                                     IMAGE_MAP_COLOR_BIT |      \
2670                                     IMAGE_COLOR_TABLE_BIT)
2671
2672 /** Pixel transfer ops after convolution */
2673 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS |      \
2674                                      IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2675                                      IMAGE_COLOR_MATRIX_BIT |                 \
2676                                      IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2677                                      IMAGE_HISTOGRAM_BIT |                    \
2678                                      IMAGE_MIN_MAX_BIT)
2679 /*@}*/
2680
2681
2682 /**
2683  * \name Bits to indicate what state has changed.
2684  *
2685  * 4 unused flags.
2686  */
2687 /*@{*/
2688 #define _NEW_MODELVIEW          0x1        /**< __GLcontextRec::ModelView */
2689 #define _NEW_PROJECTION         0x2        /**< __GLcontextRec::Projection */
2690 #define _NEW_TEXTURE_MATRIX     0x4        /**< __GLcontextRec::TextureMatrix */
2691 #define _NEW_COLOR_MATRIX       0x8        /**< __GLcontextRec::ColorMatrix */
2692 #define _NEW_ACCUM              0x10       /**< __GLcontextRec::Accum */
2693 #define _NEW_COLOR              0x20       /**< __GLcontextRec::Color */
2694 #define _NEW_DEPTH              0x40       /**< __GLcontextRec::Depth */
2695 #define _NEW_EVAL               0x80       /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2696 #define _NEW_FOG                0x100      /**< __GLcontextRec::Fog */
2697 #define _NEW_HINT               0x200      /**< __GLcontextRec::Hint */
2698 #define _NEW_LIGHT              0x400      /**< __GLcontextRec::Light */
2699 #define _NEW_LINE               0x800      /**< __GLcontextRec::Line */
2700 #define _NEW_PIXEL              0x1000     /**< __GLcontextRec::Pixel */
2701 #define _NEW_POINT              0x2000     /**< __GLcontextRec::Point */
2702 #define _NEW_POLYGON            0x4000     /**< __GLcontextRec::Polygon */
2703 #define _NEW_POLYGONSTIPPLE     0x8000     /**< __GLcontextRec::PolygonStipple */
2704 #define _NEW_SCISSOR            0x10000    /**< __GLcontextRec::Scissor */
2705 #define _NEW_STENCIL            0x20000    /**< __GLcontextRec::Stencil */
2706 #define _NEW_TEXTURE            0x40000    /**< __GLcontextRec::Texture */
2707 #define _NEW_TRANSFORM          0x80000    /**< __GLcontextRec::Transform */
2708 #define _NEW_VIEWPORT           0x100000   /**< __GLcontextRec::Viewport */
2709 #define _NEW_PACKUNPACK         0x200000   /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2710 #define _NEW_ARRAY              0x400000   /**< __GLcontextRec::Array */
2711 #define _NEW_RENDERMODE         0x800000   /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2712 #define _NEW_BUFFERS            0x1000000  /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2713 #define _NEW_MULTISAMPLE        0x2000000  /**< __GLcontextRec::Multisample */
2714 #define _NEW_TRACK_MATRIX       0x4000000  /**< __GLcontextRec::VertexProgram */
2715 #define _NEW_PROGRAM            0x8000000  /**< __GLcontextRec::VertexProgram */
2716 #define _NEW_ALL ~0
2717 /*@}*/
2718
2719
2720 /**
2721  * \name Bits to track array state changes
2722  *
2723  * Also used to summarize array enabled.
2724  */
2725 /*@{*/
2726 #define _NEW_ARRAY_VERTEX           VERT_BIT_POS
2727 #define _NEW_ARRAY_WEIGHT           VERT_BIT_WEIGHT
2728 #define _NEW_ARRAY_NORMAL           VERT_BIT_NORMAL
2729 #define _NEW_ARRAY_COLOR0           VERT_BIT_COLOR0
2730 #define _NEW_ARRAY_COLOR1           VERT_BIT_COLOR1
2731 #define _NEW_ARRAY_FOGCOORD         VERT_BIT_FOG
2732 #define _NEW_ARRAY_INDEX            VERT_BIT_COLOR_INDEX
2733 #define _NEW_ARRAY_EDGEFLAG         VERT_BIT_EDGEFLAG
2734 #define _NEW_ARRAY_TEXCOORD_0       VERT_BIT_TEX0
2735 #define _NEW_ARRAY_TEXCOORD_1       VERT_BIT_TEX1
2736 #define _NEW_ARRAY_TEXCOORD_2       VERT_BIT_TEX2
2737 #define _NEW_ARRAY_TEXCOORD_3       VERT_BIT_TEX3
2738 #define _NEW_ARRAY_TEXCOORD_4       VERT_BIT_TEX4
2739 #define _NEW_ARRAY_TEXCOORD_5       VERT_BIT_TEX5
2740 #define _NEW_ARRAY_TEXCOORD_6       VERT_BIT_TEX6
2741 #define _NEW_ARRAY_TEXCOORD_7       VERT_BIT_TEX7
2742 #define _NEW_ARRAY_ATTRIB_0         VERT_BIT_GENERIC0  /* start at bit 16 */
2743 #define _NEW_ARRAY_ALL              0xffffffff
2744
2745
2746 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2747 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2748 /*@}*/
2749
2750
2751 /**
2752  * \name A bunch of flags that we think might be useful to drivers.
2753  *
2754  * Set in the __GLcontextRec::_TriangleCaps bitfield.
2755  */
2756 /*@{*/
2757 #define DD_FLATSHADE                0x1
2758 #define DD_SEPARATE_SPECULAR        0x2
2759 #define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
2760 #define DD_TRI_LIGHT_TWOSIDE        0x8
2761 #define DD_TRI_UNFILLED             0x10
2762 #define DD_TRI_SMOOTH               0x20
2763 #define DD_TRI_STIPPLE              0x40
2764 #define DD_TRI_OFFSET               0x80
2765 #define DD_LINE_SMOOTH              0x100
2766 #define DD_LINE_STIPPLE             0x200
2767 #define DD_LINE_WIDTH               0x400
2768 #define DD_POINT_SMOOTH             0x800
2769 #define DD_POINT_SIZE               0x1000
2770 #define DD_POINT_ATTEN              0x2000
2771 #define DD_TRI_TWOSTENCIL           0x4000
2772 /*@}*/
2773
2774
2775 /**
2776  * \name Define the state changes under which each of these bits might change
2777  */
2778 /*@{*/
2779 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
2780 #define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2781 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
2782 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
2783 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
2784 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
2785 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
2786 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
2787 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
2788 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
2789 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
2790 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
2791 #define _DD_NEW_POINT_SIZE               _NEW_POINT
2792 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
2793 /*@}*/
2794
2795
2796 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |         \
2797                                            _NEW_TEXTURE |       \
2798                                            _NEW_POINT |         \
2799                                            _NEW_PROGRAM |       \
2800                                            _NEW_MODELVIEW)
2801
2802 #define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |         \
2803                                            _NEW_TEXTURE)
2804
2805 #define _IMAGE_NEW_TRANSFER_STATE         (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2806
2807
2808
2809
2810 /*
2811  * Forward declaration of display list data types:
2812  */
2813 union node;
2814 typedef union node Node;
2815
2816
2817 /* This has to be included here. */
2818 #include "dd.h"
2819
2820
2821 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2822
2823 /**
2824  * Core Mesa's support for tnl modules:
2825  */
2826 struct gl_tnl_module
2827 {
2828    /**
2829     * Vertex format to be lazily swapped into current dispatch.
2830     */
2831    const GLvertexformat *Current;
2832
2833    /**
2834     * \name Record of functions swapped out.
2835     * On restore, only need to swap these functions back in.
2836     */
2837    /*@{*/
2838    struct {
2839        _glapi_proc * location;
2840        _glapi_proc function;
2841    } Swapped[NUM_VERTEX_FORMAT_ENTRIES];
2842    GLuint SwapCount;
2843    /*@}*/
2844 };
2845
2846 /* Strictly this is a tnl/ private concept, but it doesn't seem
2847  * worthwhile adding a tnl private structure just to hold this one bit
2848  * of information:
2849  */
2850 #define MESA_DLIST_DANGLING_REFS     0x1
2851
2852 /* Provide a location where information about a display list can be
2853  * collected.  Could be extended with driverPrivate structures,
2854  * etc. in the future.
2855  */
2856 struct mesa_display_list
2857 {
2858    Node *node;
2859    GLuint id;
2860    GLbitfield flags;
2861 };
2862
2863
2864 /**
2865  * State used during display list compilation and execution.
2866  */
2867 struct gl_dlist_state
2868 {
2869    struct mesa_display_list *CallStack[MAX_LIST_NESTING];
2870    GLuint CallDepth;            /**< Current recursion calling depth */
2871
2872    struct mesa_display_list *CurrentList;
2873    Node *CurrentListPtr;        /**< Head of list being compiled */
2874    GLuint CurrentListNum;       /**< Number of the list being compiled */
2875    Node *CurrentBlock;          /**< Pointer to current block of nodes */
2876    GLuint CurrentPos;           /**< Index into current block of nodes */
2877
2878    GLvertexformat ListVtxfmt;
2879
2880    GLubyte ActiveAttribSize[VERT_ATTRIB_MAX];
2881    GLfloat CurrentAttrib[VERT_ATTRIB_MAX][4];
2882
2883    GLubyte ActiveMaterialSize[MAT_ATTRIB_MAX];
2884    GLfloat CurrentMaterial[MAT_ATTRIB_MAX][4];
2885
2886    GLubyte ActiveIndex;
2887    GLfloat CurrentIndex;
2888
2889    GLubyte ActiveEdgeFlag;
2890    GLboolean CurrentEdgeFlag;
2891 };
2892
2893
2894 /**
2895  * Mesa rendering context.
2896  *
2897  * This is the central context data structure for Mesa.  Almost all
2898  * OpenGL state is contained in this structure.
2899  * Think of this as a base class from which device drivers will derive
2900  * sub classes.
2901  *
2902  * The GLcontext typedef names this structure.
2903  */
2904 struct __GLcontextRec
2905 {
2906    /** State possibly shared with other contexts in the address space */
2907    struct gl_shared_state *Shared;
2908
2909    /** \name API function pointer tables */
2910    /*@{*/
2911    struct _glapi_table *Save;   /**< Display list save functions */
2912    struct _glapi_table *Exec;   /**< Execute functions */
2913    struct _glapi_table *CurrentDispatch;  /**< == Save or Exec !! */
2914    /*@}*/
2915
2916    GLvisual Visual;
2917    GLframebuffer *DrawBuffer;   /**< buffer for writing */
2918    GLframebuffer *ReadBuffer;   /**< buffer for reading */
2919    GLframebuffer *WinSysDrawBuffer;  /**< set with MakeCurrent */
2920    GLframebuffer *WinSysReadBuffer;  /**< set with MakeCurrent */
2921
2922    /**
2923     * Device driver function pointer table
2924     */
2925    struct dd_function_table Driver;
2926
2927    void *DriverCtx;     /**< Points to device driver context/state */
2928
2929    /** Core/Driver constants */
2930    struct gl_constants Const;
2931
2932    /** \name The various 4x4 matrix stacks */
2933    /*@{*/
2934    struct gl_matrix_stack ModelviewMatrixStack;
2935    struct gl_matrix_stack ProjectionMatrixStack;
2936    struct gl_matrix_stack ColorMatrixStack;
2937    struct gl_matrix_stack TextureMatrixStack[MAX_TEXTURE_COORD_UNITS];
2938    struct gl_matrix_stack ProgramMatrixStack[MAX_PROGRAM_MATRICES];
2939    struct gl_matrix_stack *CurrentStack; /**< Points to one of the above stacks */
2940    /*@}*/
2941
2942    /** Combined modelview and projection matrix */
2943    GLmatrix _ModelProjectMatrix;
2944
2945    /** \name Display lists */
2946    struct gl_dlist_state ListState;
2947
2948    GLboolean ExecuteFlag;       /**< Execute GL commands? */
2949    GLboolean CompileFlag;       /**< Compile GL commands into display list? */
2950
2951    /** Extension information */
2952    struct gl_extensions Extensions;
2953
2954    /** \name State attribute stack (for glPush/PopAttrib) */
2955    /*@{*/
2956    GLuint AttribStackDepth;
2957    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
2958    /*@}*/
2959
2960    /** \name Renderer attribute groups
2961     *
2962     * We define a struct for each attribute group to make pushing and popping
2963     * attributes easy.  Also it's a good organization.
2964     */
2965    /*@{*/
2966    struct gl_accum_attrib       Accum;          /**< Accum buffer attributes */
2967    struct gl_colorbuffer_attrib Color;          /**< Color buffer attributes */
2968    struct gl_current_attrib     Current;        /**< Current attributes */
2969    struct gl_depthbuffer_attrib Depth;          /**< Depth buffer attributes */
2970    struct gl_eval_attrib        Eval;           /**< Eval attributes */
2971    struct gl_fog_attrib         Fog;            /**< Fog attributes */
2972    struct gl_hint_attrib        Hint;           /**< Hint attributes */
2973    struct gl_light_attrib       Light;          /**< Light attributes */
2974    struct gl_line_attrib        Line;           /**< Line attributes */
2975    struct gl_list_attrib        List;           /**< List attributes */
2976    struct gl_multisample_attrib Multisample;
2977    struct gl_pixel_attrib       Pixel;          /**< Pixel attributes */
2978    struct gl_point_attrib       Point;          /**< Point attributes */
2979    struct gl_polygon_attrib     Polygon;        /**< Polygon attributes */
2980    GLuint PolygonStipple[32];                   /**< Polygon stipple */
2981    struct gl_scissor_attrib     Scissor;        /**< Scissor attributes */
2982    struct gl_stencil_attrib     Stencil;        /**< Stencil buffer attributes */
2983    struct gl_texture_attrib     Texture;        /**< Texture attributes */
2984    struct gl_transform_attrib   Transform;      /**< Transformation attributes */
2985    struct gl_viewport_attrib    Viewport;       /**< Viewport attributes */
2986    /*@}*/
2987
2988    /** \name Client attribute stack */
2989    /*@{*/
2990    GLuint ClientAttribStackDepth;
2991    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
2992    /*@}*/
2993
2994    /** \name Client attribute groups */
2995    /*@{*/
2996    struct gl_array_attrib       Array;  /**< Vertex arrays */
2997    struct gl_pixelstore_attrib  Pack;   /**< Pixel packing */
2998    struct gl_pixelstore_attrib  Unpack; /**< Pixel unpacking */
2999    struct gl_pixelstore_attrib  DefaultPacking; /**< Default params */
3000    /*@}*/
3001
3002    /** \name Other assorted state (not pushed/popped on attribute stack) */
3003    /*@{*/
3004    struct gl_pixelmaps          PixelMaps;
3005    struct gl_histogram_attrib   Histogram;
3006    struct gl_minmax_attrib      MinMax;
3007    struct gl_convolution_attrib Convolution1D;
3008    struct gl_convolution_attrib Convolution2D;
3009    struct gl_convolution_attrib Separable2D;
3010
3011    struct gl_evaluators EvalMap;   /**< All evaluators */
3012    struct gl_feedback   Feedback;  /**< Feedback */
3013    struct gl_selection  Select;    /**< Selection */
3014
3015    struct gl_color_table ColorTable[COLORTABLE_MAX];
3016    struct gl_color_table ProxyColorTable[COLORTABLE_MAX];
3017 #if 0
3018    struct gl_color_table PostConvolutionColorTable;
3019    struct gl_color_table ProxyPostConvolutionColorTable;
3020    struct gl_color_table PostColorMatrixColorTable;
3021    struct gl_color_table ProxyPostColorMatrixColorTable;
3022 #endif
3023
3024    struct gl_program_state Program;        /**< for vertex or fragment progs */
3025    struct gl_vertex_program_state VertexProgram;   /**< GL_ARB/NV_vertex_program */
3026    struct gl_fragment_program_state FragmentProgram;  /**< GL_ARB/NV_vertex_program */
3027    struct gl_ati_fragment_shader_state ATIFragmentShader;  /**< GL_ATI_fragment_shader */
3028
3029    struct gl_query_state Query;  /**< GL_ARB_occlusion_query */
3030
3031    struct gl_shader_state Shader; /**< GLSL shader object state */
3032    /*@}*/
3033
3034 #if FEATURE_EXT_framebuffer_object
3035    struct gl_renderbuffer *CurrentRenderbuffer;
3036 #endif
3037
3038    GLenum ErrorValue;        /**< Last error code */
3039    GLenum RenderMode;        /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
3040    GLbitfield NewState;      /**< bitwise-or of _NEW_* flags */
3041
3042    /** \name Derived state */
3043    /*@{*/
3044    GLbitfield _TriangleCaps;      /**< bitwise-or of DD_* flags */
3045    GLbitfield _ImageTransferState;/**< bitwise-or of IMAGE_*_BIT flags */
3046    GLfloat _EyeZDir[3];
3047    GLfloat _ModelViewInvScale;
3048    GLboolean _NeedEyeCoords;
3049    GLboolean _ForceEyeCoords;
3050    GLenum _CurrentProgram;    /* currently executing program */
3051
3052    GLuint TextureStateTimestamp; /* detect changes to shared state */
3053
3054    struct gl_shine_tab *_ShineTable[2]; /**< Active shine tables */
3055    struct gl_shine_tab *_ShineTabList;  /**< MRU list of inactive shine tables */
3056    /**@}*/
3057
3058    struct gl_list_extensions ListExt; /**< driver dlist extensions */
3059
3060
3061    GLuint _Facing; /**< This is a hack for 2-sided stencil test.
3062                     *
3063                     * We don't have a better way to communicate this value from
3064                     * swrast_setup to swrast. */
3065
3066    /** \name For debugging/development only */
3067    /*@{*/
3068    GLboolean FirstTimeCurrent;
3069    /*@}*/
3070
3071    /** Dither disable via MESA_NO_DITHER env var */
3072    GLboolean NoDither;
3073
3074    /** software compression/decompression supported or not */
3075    GLboolean Mesa_DXTn;
3076
3077    /** Core tnl module support */
3078    struct gl_tnl_module TnlModule;
3079
3080    /**
3081     * \name Hooks for module contexts.
3082     *
3083     * These will eventually live in the driver or elsewhere.
3084     */
3085    /*@{*/
3086    void *swrast_context;
3087    void *swsetup_context;
3088    void *swtnl_context;
3089    void *swtnl_im;
3090    void *acache_context;
3091    void *aelt_context;
3092    /*@}*/
3093 };
3094
3095
3096 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
3097 extern const char *_mesa_prim_name[GL_POLYGON+4];
3098
3099
3100 #ifdef DEBUG
3101 extern int MESA_VERBOSE;
3102 extern int MESA_DEBUG_FLAGS;
3103 # define MESA_FUNCTION __FUNCTION__
3104 #else
3105 # define MESA_VERBOSE 0
3106 # define MESA_DEBUG_FLAGS 0
3107 # define MESA_FUNCTION "a function"
3108 # ifndef NDEBUG
3109 #  define NDEBUG
3110 # endif
3111 #endif
3112
3113
3114 enum _verbose
3115 {
3116    VERBOSE_VARRAY               = 0x0001,
3117    VERBOSE_TEXTURE              = 0x0002,
3118    VERBOSE_IMMEDIATE            = 0x0004,
3119    VERBOSE_PIPELINE             = 0x0008,
3120    VERBOSE_DRIVER               = 0x0010,
3121    VERBOSE_STATE                = 0x0020,
3122    VERBOSE_API                  = 0x0040,
3123    VERBOSE_DISPLAY_LIST         = 0x0100,
3124    VERBOSE_LIGHTING             = 0x0200,
3125    VERBOSE_PRIMS                = 0x0400,
3126    VERBOSE_VERTS                = 0x0800,
3127    VERBOSE_DISASSEM             = 0x1000
3128 };
3129
3130
3131 enum _debug
3132 {
3133    DEBUG_ALWAYS_FLUSH           = 0x1
3134 };
3135
3136
3137
3138 #define Elements(x) sizeof(x)/sizeof(*(x))
3139
3140
3141 #endif /* TYPES_H */