src/mesa/main/mtypes.h

   1 /* $Id: mtypes.h,v 1.49 2001/07/13 20:07:37 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  3.5
   6  *
   7  * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #ifndef TYPES_H
  29 #define TYPES_H
  30
  31
  32 #include "glheader.h"
  33 #include "config.h"             /* Hardwired parameters */
  34 #include "glapitable.h"
  35 #include "glthread.h"
  36
  37 #include "math/m_matrix.h"      /* GLmatrix */
  38
  39 #if defined(MESA_TRACE)
  40 #include "Trace/tr_context.h"
  41 #endif
  42
  43
  44 /* Please try to mark derived values with a leading underscore ('_').
  45  */
  46
  47 /*
  48  * Color channel data type:
  49  */
  50 #if CHAN_BITS == 8
  51    typedef GLubyte GLchan;
  52 #define CHAN_MAX 255
  53 #define CHAN_MAXF 255.0F
  54 #define CHAN_TYPE GL_UNSIGNED_BYTE
  55 #elif CHAN_BITS == 16
  56    typedef GLushort GLchan;
  57 #define CHAN_MAX 65535
  58 #define CHAN_MAXF 65535.0F
  59 #define CHAN_TYPE GL_UNSIGNED_SHORT
  60 #elif CHAN_BITS == 32
  61    typedef GLfloat GLchan;
  62 #define CHAN_MAX 1.0
  63 #define CHAN_MAXF 1.0F
  64 #define CHAN_TYPE GL_FLOAT
  65 #else
  66 #error  illegal number of color channel bits
  67 #endif
  68
  69
  70 /*
  71  * Accumulation buffer data type:
  72  */
  73 #if ACCUM_BITS==8
  74    typedef GLbyte GLaccum;
  75 #elif ACCUM_BITS==16
  76    typedef GLshort GLaccum;
  77 #elif ACCUM_BITS==32
  78    typedef GLfloat GLaccum;
  79 #else
  80 #  error "illegal number of accumulation bits"
  81 #endif
  82
  83
  84 /*
  85  * Stencil buffer data type:
  86  */
  87 #if STENCIL_BITS==8
  88    typedef GLubyte GLstencil;
  89 #  define STENCIL_MAX 0xff
  90 #elif STENCIL_BITS==16
  91    typedef GLushort GLstencil;
  92 #  define STENCIL_MAX 0xffff
  93 #else
  94 #  error "illegal number of stencil bits"
  95 #endif
  96
  97
  98 /*
  99  * Depth buffer data type:
 100  */
 101 typedef GLuint GLdepth;  /* Must be 32-bits! */
 102
 103
 104 /*
 105  * Fixed point data type:
 106  */
 107 typedef int GLfixed;
 108
 109
 110
 111 /*
 112  * Some forward type declarations
 113  */
 114 struct _mesa_HashTable;
 115 struct gl_texture_image;
 116 struct gl_texture_object;
 117 typedef struct __GLcontextRec GLcontext;
 118 typedef struct __GLcontextModesRec GLvisual;
 119 typedef struct gl_frame_buffer GLframebuffer;
 120
 121
 122
 123 /* Maximum number of temporary vertices required for clipping.  (Used
 124  * in array_cache and tnl modules).
 125  */
 126 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 127
 128
 129 /* Data structure for color tables */
 130 struct gl_color_table {
 131    GLenum Format;         /* GL_ALPHA, GL_RGB, GL_RGB, etc */
 132    GLenum IntFormat;
 133    GLuint Size;           /* number of entries (rows) in table */
 134    GLvoid *Table;         /* either GLfloat * or GLchan * */
 135    GLboolean FloatTable;  /* are entries stored as floats? */
 136    GLubyte RedSize;
 137    GLubyte GreenSize;
 138    GLubyte BlueSize;
 139    GLubyte AlphaSize;
 140    GLubyte LuminanceSize;
 141    GLubyte IntensitySize;
 142 };
 143
 144
 145 /*
 146  * Bit flags used for updating material values.
 147  */
 148 #define FRONT_AMBIENT_BIT     0x1
 149 #define BACK_AMBIENT_BIT      0x2
 150 #define FRONT_DIFFUSE_BIT     0x4
 151 #define BACK_DIFFUSE_BIT      0x8
 152 #define FRONT_SPECULAR_BIT   0x10
 153 #define BACK_SPECULAR_BIT    0x20
 154 #define FRONT_EMISSION_BIT   0x40
 155 #define BACK_EMISSION_BIT    0x80
 156 #define FRONT_SHININESS_BIT 0x100
 157 #define BACK_SHININESS_BIT  0x200
 158 #define FRONT_INDEXES_BIT   0x400
 159 #define BACK_INDEXES_BIT    0x800
 160
 161 #define FRONT_MATERIAL_BITS     (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT | \
 162                                  FRONT_DIFFUSE_BIT | FRONT_SPECULAR_BIT | \
 163                                  FRONT_SHININESS_BIT | FRONT_INDEXES_BIT)
 164
 165 #define BACK_MATERIAL_BITS      (BACK_EMISSION_BIT | BACK_AMBIENT_BIT | \
 166                                  BACK_DIFFUSE_BIT | BACK_SPECULAR_BIT | \
 167                                  BACK_SHININESS_BIT | BACK_INDEXES_BIT)
 168
 169 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 170
 171
 172
 173 /*
 174  * Specular exponent and material shininess lookup table sizes:
 175  */
 176 #define EXP_TABLE_SIZE 512
 177 #define SHINE_TABLE_SIZE 256
 178
 179 struct gl_shine_tab {
 180    struct gl_shine_tab *next, *prev;
 181    GLfloat tab[SHINE_TABLE_SIZE+1];
 182    GLfloat shininess;
 183    GLuint refcount;
 184 };
 185
 186
 187 struct gl_light {
 188    struct gl_light *next;               /* double linked list with sentinel */
 189    struct gl_light *prev;
 190
 191    GLfloat Ambient[4];          /* ambient color */
 192    GLfloat Diffuse[4];          /* diffuse color */
 193    GLfloat Specular[4];         /* specular color */
 194    GLfloat EyePosition[4];      /* position in eye coordinates */
 195    GLfloat EyeDirection[4];     /* spotlight dir in eye coordinates */
 196    GLfloat SpotExponent;
 197    GLfloat SpotCutoff;          /* in degress */
 198    GLfloat _CosCutoff;          /* = MAX(0, cos(SpotCutoff)) */
 199    GLfloat ConstantAttenuation;
 200    GLfloat LinearAttenuation;
 201    GLfloat QuadraticAttenuation;
 202    GLboolean Enabled;           /* On/off flag */
 203
 204    /* Derived fields */
 205    GLuint _Flags;               /* State */
 206
 207    GLfloat _Position[4];        /* position in eye/obj coordinates */
 208    GLfloat _VP_inf_norm[3];     /* Norm direction to infinite light */
 209    GLfloat _h_inf_norm[3];      /* Norm( _VP_inf_norm + <0,0,1> ) */
 210    GLfloat _NormDirection[4];   /* normalized spotlight direction */
 211    GLfloat _VP_inf_spot_attenuation;
 212
 213    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /* to replace a pow() call */
 214    GLfloat _MatAmbient[2][3];   /* material ambient * light ambient */
 215    GLfloat _MatDiffuse[2][3];   /* material diffuse * light diffuse */
 216    GLfloat _MatSpecular[2][3];  /* material spec * light specular */
 217    GLfloat _dli;                /* CI diffuse light intensity */
 218    GLfloat _sli;                /* CI specular light intensity */
 219 };
 220
 221
 222 struct gl_lightmodel {
 223    GLfloat Ambient[4];          /* ambient color */
 224    GLboolean LocalViewer;       /* Local (or infinite) view point? */
 225    GLboolean TwoSide;           /* Two (or one) sided lighting? */
 226    GLenum ColorControl;         /* either GL_SINGLE_COLOR */
 227                                 /* or GL_SEPARATE_SPECULAR_COLOR */
 228 };
 229
 230
 231 struct gl_material
 232 {
 233    GLfloat Ambient[4];
 234    GLfloat Diffuse[4];
 235    GLfloat Specular[4];
 236    GLfloat Emission[4];
 237    GLfloat Shininess;
 238    GLfloat AmbientIndex;        /* for color index lighting */
 239    GLfloat DiffuseIndex;        /* for color index lighting */
 240    GLfloat SpecularIndex;       /* for color index lighting */
 241 };
 242
 243
 244 /*
 245  * Attribute structures:
 246  *    We define a struct for each attribute group to make pushing and
 247  *    popping attributes easy.  Also it's a good organization.
 248  */
 249 struct gl_accum_attrib {
 250    GLfloat ClearColor[4];       /* Accumulation buffer clear color */
 251 };
 252
 253
 254 /*
 255  * Used in DrawDestMask below
 256  */
 257 #define FRONT_LEFT_BIT  1
 258 #define FRONT_RIGHT_BIT 2
 259 #define BACK_LEFT_BIT   4
 260 #define BACK_RIGHT_BIT  8
 261
 262
 263 struct gl_colorbuffer_attrib {
 264    GLuint ClearIndex;                   /* Index to use for glClear */
 265    GLchan ClearColor[4];                /* Color to use for glClear */
 266
 267    GLuint IndexMask;                    /* Color index write mask */
 268    GLubyte ColorMask[4];                /* Each flag is 0xff or 0x0 */
 269
 270    GLenum DrawBuffer;                   /* Which buffer to draw into */
 271    GLenum DriverDrawBuffer;             /* Current device driver dest buffer */
 272    GLboolean MultiDrawBuffer;           /* Drawing to mutliple buffers? */
 273    GLubyte DrawDestMask;                /* bitwise-OR of bitflags above */
 274
 275    /* alpha testing */
 276    GLboolean AlphaEnabled;              /* Alpha test enabled flag */
 277    GLenum AlphaFunc;                    /* Alpha test function */
 278    GLchan AlphaRef;                     /* Alpha ref value as GLchan */
 279
 280    /* blending */
 281    GLboolean BlendEnabled;              /* Blending enabled flag */
 282    GLenum BlendSrcRGB;                  /* Blending source operator */
 283    GLenum BlendDstRGB;                  /* Blending destination operator */
 284    GLenum BlendSrcA;                    /* GL_INGR_blend_func_separate */
 285    GLenum BlendDstA;                    /* GL_INGR_blend_func_separate */
 286    GLenum BlendEquation;
 287    GLfloat BlendColor[4];
 288
 289    /* logic op */
 290    GLenum LogicOp;                      /* Logic operator */
 291    GLboolean IndexLogicOpEnabled;       /* Color index logic op enabled flag */
 292    GLboolean ColorLogicOpEnabled;       /* RGBA logic op enabled flag */
 293
 294    GLboolean DitherFlag;                /* Dither enable flag */
 295 };
 296
 297
 298 struct gl_current_attrib {
 299    /* These values valid only when FLUSH_VERTICES has been called.
 300     */
 301    GLfloat Normal[3];                           /* Current vertex normal */
 302    GLfloat Color[4];                            /* Current RGBA color */
 303    GLfloat SecondaryColor[4];                   /* Current secondary color */
 304    GLfloat FogCoord;                            /* Current Fog coord */
 305    GLuint Index;                                /* Current color index */
 306    GLboolean EdgeFlag;                          /* Current edge flag */
 307    GLfloat Texcoord[MAX_TEXTURE_UNITS][4];      /* Current texture coords */
 308
 309    /* These values are always valid.
 310     */
 311    GLfloat RasterPos[4];                        /* Current raster position */
 312    GLfloat RasterDistance;                      /* Current raster distance */
 313    GLfloat RasterColor[4];                      /* Current raster color */
 314    GLfloat RasterSecondaryColor[4];             /* Current rast 2ndary color */
 315    GLuint  RasterIndex;                         /* Current raster index */
 316    GLfloat *RasterTexCoord;                     /* Current raster texcoord*/
 317    GLfloat RasterMultiTexCoord[MAX_TEXTURE_UNITS][4];
 318    GLfloat RasterFogCoord;
 319    GLboolean RasterPosValid;                    /* Raster po valid flag */
 320 };
 321
 322
 323 struct gl_depthbuffer_attrib {
 324    GLenum Func;                 /* Function for depth buffer compare */
 325    GLfloat Clear;               /* Value to clear depth buffer to */
 326    GLboolean Test;              /* Depth buffering enabled flag */
 327    GLboolean Mask;              /* Depth buffer writable? */
 328    GLboolean OcclusionTest;     /* GL_HP_occlusion_test */
 329 };
 330
 331
 332 struct gl_enable_attrib {
 333    GLboolean AlphaTest;
 334    GLboolean AutoNormal;
 335    GLboolean Blend;
 336    GLboolean ClipPlane[MAX_CLIP_PLANES];
 337    GLboolean ColorMaterial;
 338    GLboolean Convolution1D;
 339    GLboolean Convolution2D;
 340    GLboolean Separable2D;
 341    GLboolean CullFace;
 342    GLboolean DepthTest;
 343    GLboolean Dither;
 344    GLboolean Fog;
 345    GLboolean Histogram;
 346    GLboolean Light[MAX_LIGHTS];
 347    GLboolean Lighting;
 348    GLboolean LineSmooth;
 349    GLboolean LineStipple;
 350    GLboolean IndexLogicOp;
 351    GLboolean ColorLogicOp;
 352    GLboolean Map1Color4;
 353    GLboolean Map1Index;
 354    GLboolean Map1Normal;
 355    GLboolean Map1TextureCoord1;
 356    GLboolean Map1TextureCoord2;
 357    GLboolean Map1TextureCoord3;
 358    GLboolean Map1TextureCoord4;
 359    GLboolean Map1Vertex3;
 360    GLboolean Map1Vertex4;
 361    GLboolean Map2Color4;
 362    GLboolean Map2Index;
 363    GLboolean Map2Normal;
 364    GLboolean Map2TextureCoord1;
 365    GLboolean Map2TextureCoord2;
 366    GLboolean Map2TextureCoord3;
 367    GLboolean Map2TextureCoord4;
 368    GLboolean Map2Vertex3;
 369    GLboolean Map2Vertex4;
 370    GLboolean MinMax;
 371    GLboolean Normalize;
 372    GLboolean PixelTexture;
 373    GLboolean PointSmooth;
 374    GLboolean PolygonOffsetPoint;
 375    GLboolean PolygonOffsetLine;
 376    GLboolean PolygonOffsetFill;
 377    GLboolean PolygonSmooth;
 378    GLboolean PolygonStipple;
 379    GLboolean RescaleNormals;
 380    GLboolean Scissor;
 381    GLboolean Stencil;
 382    GLboolean MultisampleEnabled;     /* GL_ARB_multisample */
 383    GLboolean SampleAlphaToCoverage;  /* GL_ARB_multisample */
 384    GLboolean SampleAlphaToOne;       /* GL_ARB_multisample */
 385    GLboolean SampleCoverage;         /* GL_ARB_multisample */
 386    GLboolean SampleCoverageInvert;   /* GL_ARB_multisample */
 387    GLboolean RasterPositionUnclipped; /* GL_IBM_rasterpos_clip */
 388    GLuint Texture[MAX_TEXTURE_UNITS];
 389    GLuint TexGen[MAX_TEXTURE_UNITS];
 390 };
 391
 392
 393 struct gl_eval_attrib {
 394    /* Enable bits */
 395    GLboolean Map1Color4;
 396    GLboolean Map1Index;
 397    GLboolean Map1Normal;
 398    GLboolean Map1TextureCoord1;
 399    GLboolean Map1TextureCoord2;
 400    GLboolean Map1TextureCoord3;
 401    GLboolean Map1TextureCoord4;
 402    GLboolean Map1Vertex3;
 403    GLboolean Map1Vertex4;
 404    GLboolean Map2Color4;
 405    GLboolean Map2Index;
 406    GLboolean Map2Normal;
 407    GLboolean Map2TextureCoord1;
 408    GLboolean Map2TextureCoord2;
 409    GLboolean Map2TextureCoord3;
 410    GLboolean Map2TextureCoord4;
 411    GLboolean Map2Vertex3;
 412    GLboolean Map2Vertex4;
 413    GLboolean AutoNormal;
 414    /* Map Grid endpoints and divisions and calculated du values */
 415    GLint MapGrid1un;
 416    GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
 417    GLint MapGrid2un, MapGrid2vn;
 418    GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
 419    GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
 420 };
 421
 422
 423 struct gl_fog_attrib {
 424    GLboolean Enabled;           /* Fog enabled flag */
 425    GLfloat Color[4];            /* Fog color */
 426    GLfloat Density;             /* Density >= 0.0 */
 427    GLfloat Start;               /* Start distance in eye coords */
 428    GLfloat End;                 /* End distance in eye coords */
 429    GLfloat Index;               /* Fog index */
 430    GLenum Mode;                 /* Fog mode */
 431    GLboolean ColorSumEnabled;
 432    GLenum FogCoordinateSource;  /* GL_EXT_fog_coord */
 433 };
 434
 435
 436 struct gl_hint_attrib {
 437    /* always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE */
 438    GLenum PerspectiveCorrection;
 439    GLenum PointSmooth;
 440    GLenum LineSmooth;
 441    GLenum PolygonSmooth;
 442    GLenum Fog;
 443    GLenum ClipVolumeClipping;   /* GL_EXT_clip_volume_hint */
 444    GLenum TextureCompression;   /* GL_ARB_texture_compression */
 445    GLenum GenerateMipmap;       /* GL_SGIS_generate_mipmap */
 446 };
 447
 448
 449 struct gl_histogram_attrib {
 450    GLuint Width;                                /* number of table entries */
 451    GLint Format;                                /* GL_ALPHA, GL_RGB, etc */
 452    GLuint Count[HISTOGRAM_TABLE_SIZE][4];       /* the histogram */
 453    GLboolean Sink;                              /* terminate image transfer? */
 454    GLubyte RedSize;                             /* Bits per counter */
 455    GLubyte GreenSize;
 456    GLubyte BlueSize;
 457    GLubyte AlphaSize;
 458    GLubyte LuminanceSize;
 459 };
 460
 461
 462 struct gl_minmax_attrib {
 463    GLenum Format;
 464    GLboolean Sink;
 465    GLfloat Min[4], Max[4];   /* RGBA */
 466 };
 467
 468
 469 struct gl_convolution_attrib {
 470    GLenum Format;
 471    GLenum InternalFormat;
 472    GLuint Width;
 473    GLuint Height;
 474    GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
 475 };
 476
 477
 478 struct gl_light_attrib {
 479    struct gl_light Light[MAX_LIGHTS];   /* Array of lights */
 480    struct gl_lightmodel Model;          /* Lighting model */
 481
 482    /* Must flush FLUSH_VERTICES before referencing:
 483     */
 484    struct gl_material Material[2];      /* Material 0=front, 1=back */
 485
 486    GLboolean Enabled;                   /* Lighting enabled flag */
 487    GLenum ShadeModel;                   /* GL_FLAT or GL_SMOOTH */
 488    GLenum ColorMaterialFace;            /* GL_FRONT, BACK or FRONT_AND_BACK */
 489    GLenum ColorMaterialMode;            /* GL_AMBIENT, GL_DIFFUSE, etc */
 490    GLuint ColorMaterialBitmask;         /* bitmask formed from Face and Mode */
 491    GLboolean ColorMaterialEnabled;
 492
 493    struct gl_light EnabledList;         /* List sentinel */
 494
 495    /* Derived for optimizations: */
 496    GLboolean _NeedVertices;             /* Use fast shader? */
 497    GLuint  _Flags;                      /* LIGHT_* flags, see below */
 498    GLfloat _BaseColor[2][3];
 499    GLfloat _BaseAlpha[2];
 500 };
 501
 502
 503 #define LIGHT_SPOT         0x1
 504 #define LIGHT_LOCAL_VIEWER 0x2
 505 #define LIGHT_POSITIONAL   0x4
 506
 507 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 508
 509 struct gl_line_attrib {
 510    GLboolean SmoothFlag;        /* GL_LINE_SMOOTH enabled? */
 511    GLboolean StippleFlag;       /* GL_LINE_STIPPLE enabled? */
 512    GLushort StipplePattern;     /* Stipple pattern */
 513    GLint StippleFactor;         /* Stipple repeat factor */
 514    GLfloat Width;               /* Line width */
 515    GLfloat _Width;              /* Clamped Line width */
 516 };
 517
 518
 519 struct gl_list_attrib {
 520    GLuint ListBase;
 521 };
 522
 523 struct gl_list_opcode {
 524    GLuint size;
 525    void (*execute)( GLcontext *ctx, void *data );
 526    void (*destroy)( GLcontext *ctx, void *data );
 527    void (*print)( GLcontext *ctx, void *data );
 528 };
 529
 530 #define GL_MAX_EXT_OPCODES 16
 531
 532 struct gl_list_extensions {
 533    struct gl_list_opcode opcode[GL_MAX_EXT_OPCODES];
 534    GLuint nr_opcodes;
 535 };
 536
 537
 538 struct gl_multisample_attrib {
 539    GLboolean Enabled;
 540    GLboolean SampleAlphaToCoverage;
 541    GLboolean SampleAlphaToOne;
 542    GLboolean SampleCoverage;
 543    GLfloat SampleCoverageValue;
 544    GLboolean SampleCoverageInvert;
 545 };
 546
 547
 548 struct gl_pixel_attrib {
 549    GLenum ReadBuffer;           /* src buffer for glRead/CopyPixels */
 550    GLenum DriverReadBuffer;     /* Driver's current source buffer */
 551    GLfloat RedBias, RedScale;
 552    GLfloat GreenBias, GreenScale;
 553    GLfloat BlueBias, BlueScale;
 554    GLfloat AlphaBias, AlphaScale;
 555    GLfloat DepthBias, DepthScale;
 556    GLint IndexShift, IndexOffset;
 557    GLboolean MapColorFlag;
 558    GLboolean MapStencilFlag;
 559    GLfloat ZoomX, ZoomY;
 560    GLint MapStoSsize;           /* Size of each pixel map */
 561    GLint MapItoIsize;
 562    GLint MapItoRsize;
 563    GLint MapItoGsize;
 564    GLint MapItoBsize;
 565    GLint MapItoAsize;
 566    GLint MapRtoRsize;
 567    GLint MapGtoGsize;
 568    GLint MapBtoBsize;
 569    GLint MapAtoAsize;
 570    GLint MapStoS[MAX_PIXEL_MAP_TABLE];  /* Pixel map tables */
 571    GLint MapItoI[MAX_PIXEL_MAP_TABLE];
 572    GLfloat MapItoR[MAX_PIXEL_MAP_TABLE];
 573    GLfloat MapItoG[MAX_PIXEL_MAP_TABLE];
 574    GLfloat MapItoB[MAX_PIXEL_MAP_TABLE];
 575    GLfloat MapItoA[MAX_PIXEL_MAP_TABLE];
 576    GLubyte MapItoR8[MAX_PIXEL_MAP_TABLE];  /* converted to 8-bit color */
 577    GLubyte MapItoG8[MAX_PIXEL_MAP_TABLE];
 578    GLubyte MapItoB8[MAX_PIXEL_MAP_TABLE];
 579    GLubyte MapItoA8[MAX_PIXEL_MAP_TABLE];
 580    GLfloat MapRtoR[MAX_PIXEL_MAP_TABLE];
 581    GLfloat MapGtoG[MAX_PIXEL_MAP_TABLE];
 582    GLfloat MapBtoB[MAX_PIXEL_MAP_TABLE];
 583    GLfloat MapAtoA[MAX_PIXEL_MAP_TABLE];
 584    /* GL_EXT_histogram */
 585    GLboolean HistogramEnabled;
 586    GLboolean MinMaxEnabled;
 587    /* GL_SGIS_pixel_texture */
 588    GLboolean PixelTextureEnabled;
 589    GLenum FragmentRgbSource;
 590    GLenum FragmentAlphaSource;
 591    /* GL_SGI_color_matrix */
 592    GLfloat PostColorMatrixScale[4];  /* RGBA */
 593    GLfloat PostColorMatrixBias[4];   /* RGBA */
 594    /* GL_SGI_color_table */
 595    GLfloat ColorTableScale[4];
 596    GLfloat ColorTableBias[4];
 597    GLboolean ColorTableEnabled;
 598    GLfloat PCCTscale[4];
 599    GLfloat PCCTbias[4];
 600    GLboolean PostConvolutionColorTableEnabled;
 601    GLfloat PCMCTscale[4];
 602    GLfloat PCMCTbias[4];
 603    GLboolean PostColorMatrixColorTableEnabled;
 604    /* Convolution */
 605    GLboolean Convolution1DEnabled;
 606    GLboolean Convolution2DEnabled;
 607    GLboolean Separable2DEnabled;
 608    GLfloat ConvolutionBorderColor[3][4];
 609    GLenum ConvolutionBorderMode[3];
 610    GLfloat ConvolutionFilterScale[3][4];
 611    GLfloat ConvolutionFilterBias[3][4];
 612    GLfloat PostConvolutionScale[4];  /* RGBA */
 613    GLfloat PostConvolutionBias[4];   /* RGBA */
 614 };
 615
 616
 617 struct gl_point_attrib {
 618    GLboolean SmoothFlag;        /* True if GL_POINT_SMOOTH is enabled */
 619    GLboolean SpriteMode;        /* GL_MESA_sprite_point extension */
 620    GLfloat Size;                /* User-specified point size */
 621    GLfloat _Size;               /* Size clamped to Const.Min/MaxPointSize */
 622    GLfloat Params[3];           /* GL_EXT_point_parameters */
 623    GLfloat MinSize, MaxSize;    /* GL_EXT_point_parameters */
 624    GLfloat Threshold;           /* GL_EXT_point_parameters */
 625    GLboolean _Attenuated;       /* True if Params != [1, 0, 0] */
 626 };
 627
 628
 629 struct gl_polygon_attrib {
 630    GLenum FrontFace;            /* Either GL_CW or GL_CCW */
 631    GLenum FrontMode;            /* Either GL_POINT, GL_LINE or GL_FILL */
 632    GLenum BackMode;             /* Either GL_POINT, GL_LINE or GL_FILL */
 633    GLboolean _FrontBit;         /*  */
 634    GLboolean CullFlag;          /* Culling on/off flag */
 635    GLboolean SmoothFlag;        /* True if GL_POLYGON_SMOOTH is enabled */
 636    GLboolean StippleFlag;       /* True if GL_POLYGON_STIPPLE is enabled */
 637    GLenum CullFaceMode;         /* Culling mode GL_FRONT or GL_BACK */
 638    GLfloat OffsetFactor;        /* Polygon offset factor, from user */
 639    GLfloat OffsetUnits;         /* Polygon offset units, from user */
 640    GLfloat OffsetMRD;           /* = OffsetUnits * visual->MRD */
 641    GLboolean OffsetPoint;       /* Offset in GL_POINT mode */
 642    GLboolean OffsetLine;        /* Offset in GL_LINE mode */
 643    GLboolean OffsetFill;        /* Offset in GL_FILL mode */
 644    GLboolean _OffsetAny;
 645 };
 646
 647
 648 struct gl_scissor_attrib {
 649    GLboolean Enabled;           /* Scissor test enabled? */
 650    GLint X, Y;                  /* Lower left corner of box */
 651    GLsizei Width, Height;       /* Size of box */
 652 };
 653
 654
 655 struct gl_stencil_attrib {
 656    GLboolean Enabled;           /* Enabled flag */
 657    GLenum Function;             /* Stencil function */
 658    GLenum FailFunc;             /* Fail function */
 659    GLenum ZPassFunc;            /* Depth buffer pass function */
 660    GLenum ZFailFunc;            /* Depth buffer fail function */
 661    GLstencil Ref;               /* Reference value */
 662    GLstencil ValueMask;         /* Value mask */
 663    GLstencil Clear;             /* Clear value */
 664    GLstencil WriteMask;         /* Write mask */
 665 };
 666
 667
 668 /* TexGenEnabled flags */
 669 #define S_BIT 1
 670 #define T_BIT 2
 671 #define R_BIT 4
 672 #define Q_BIT 8
 673
 674 /* Texture Enabled flags */
 675 #define TEXTURE0_1D   0x1     /* Texture unit 0 (default) */
 676 #define TEXTURE0_2D   0x2
 677 #define TEXTURE0_3D   0x4
 678 #define TEXTURE0_CUBE 0x8
 679 #define TEXTURE0_ANY  (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D | TEXTURE0_CUBE)
 680 #define TEXTURE1_1D   (TEXTURE0_1D << 4)    /* Texture unit 1 */
 681 #define TEXTURE1_2D   (TEXTURE0_2D << 4)
 682 #define TEXTURE1_3D   (TEXTURE0_3D << 4)
 683 #define TEXTURE1_CUBE (TEXTURE0_CUBE << 4)
 684 #define TEXTURE1_ANY  (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D | TEXTURE1_CUBE)
 685 #define TEXTURE2_1D   (TEXTURE0_1D << 8)    /* Texture unit 2 */
 686 #define TEXTURE2_2D   (TEXTURE0_2D << 8)
 687 #define TEXTURE2_3D   (TEXTURE0_3D << 8)
 688 #define TEXTURE2_CUBE (TEXTURE0_CUBE << 8)
 689 #define TEXTURE2_ANY  (TEXTURE2_1D | TEXTURE2_2D | TEXTURE2_3D | TEXTURE2_CUBE)
 690 #define TEXTURE3_1D   (TEXTURE0_1D << 12)    /* Texture unit 3 */
 691 #define TEXTURE3_2D   (TEXTURE0_2D << 12)
 692 #define TEXTURE3_3D   (TEXTURE0_3D << 12)
 693 #define TEXTURE3_CUBE (TEXTURE0_CUBE << 12)
 694 #define TEXTURE3_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 695 #define TEXTURE4_1D   (TEXTURE0_1D << 16)    /* Texture unit 4 */
 696 #define TEXTURE4_2D   (TEXTURE0_2D << 16)
 697 #define TEXTURE4_3D   (TEXTURE0_3D << 16)
 698 #define TEXTURE4_CUBE (TEXTURE0_CUBE << 16)
 699 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 700 #define TEXTURE5_1D   (TEXTURE0_1D << 20)    /* Texture unit 5 */
 701 #define TEXTURE5_2D   (TEXTURE0_2D << 20)
 702 #define TEXTURE5_3D   (TEXTURE0_3D << 20)
 703 #define TEXTURE5_CUBE (TEXTURE0_CUBE << 20)
 704 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 705 #define TEXTURE6_1D   (TEXTURE0_1D << 24)    /* Texture unit 6 */
 706 #define TEXTURE6_2D   (TEXTURE0_2D << 24)
 707 #define TEXTURE6_3D   (TEXTURE0_3D << 24)
 708 #define TEXTURE6_CUBE (TEXTURE0_CUBE << 24)
 709 #define TEXTURE6_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 710 #define TEXTURE7_1D   (TEXTURE0_1D << 28)    /* Texture unit 7 */
 711 #define TEXTURE7_2D   (TEXTURE0_2D << 28)
 712 #define TEXTURE7_3D   (TEXTURE0_3D << 28)
 713 #define TEXTURE7_CUBE (TEXTURE0_CUBE << 28)
 714 #define TEXTURE7_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 715
 716 /* Bitmap versions of the GL_ constants.
 717  */
 718 #define TEXGEN_SPHERE_MAP        0x1
 719 #define TEXGEN_OBJ_LINEAR        0x2
 720 #define TEXGEN_EYE_LINEAR        0x4
 721 #define TEXGEN_REFLECTION_MAP_NV 0x8
 722 #define TEXGEN_NORMAL_MAP_NV     0x10
 723
 724 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
 725                                   TEXGEN_REFLECTION_MAP_NV | \
 726                                   TEXGEN_NORMAL_MAP_NV)
 727 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
 728                                   TEXGEN_REFLECTION_MAP_NV | \
 729                                   TEXGEN_NORMAL_MAP_NV     | \
 730                                   TEXGEN_EYE_LINEAR)
 731
 732
 733
 734 /* A selection of state flags to make driver and module's lives easier.
 735  */
 736 #define ENABLE_TEXGEN0        0x1
 737 #define ENABLE_TEXGEN1        0x2
 738 #define ENABLE_TEXGEN2        0x4
 739 #define ENABLE_TEXGEN3        0x8
 740 #define ENABLE_TEXGEN4        0x10
 741 #define ENABLE_TEXGEN5        0x20
 742 #define ENABLE_TEXGEN6        0x40
 743 #define ENABLE_TEXGEN7        0x80
 744
 745 #define ENABLE_TEXMAT0        0x1       /* Ie. not the identity matrix */
 746 #define ENABLE_TEXMAT1        0x2
 747 #define ENABLE_TEXMAT2        0x4
 748 #define ENABLE_TEXMAT3        0x8
 749 #define ENABLE_TEXMAT4        0x10
 750 #define ENABLE_TEXMAT5        0x20
 751 #define ENABLE_TEXMAT6        0x40
 752 #define ENABLE_TEXMAT7        0x80
 753
 754 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
 755 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
 756
 757 /*
 758  * If teximage is color-index, texelOut returns GLchan[1].
 759  * If teximage is depth, texelOut returns GLfloat[1].
 760  * Otherwise, texelOut returns GLchan[4].
 761  */
 762 typedef void (*FetchTexelFunc)( const struct gl_texture_image *texImage,
 763                                 GLint col, GLint row, GLint img,
 764                                 GLvoid *texelOut );
 765
 766 /* Texture format record */
 767 struct gl_texture_format {
 768    GLint MesaFormat;            /* One of the MESA_FORMAT_* values */
 769
 770    GLenum BaseFormat;           /* Either GL_ALPHA, GL_INTENSITY, GL_LUMINANCE,
 771                                  * GL_LUMINANCE_ALPHA, GL_RGB, GL_RGBA,
 772                                  * GL_COLOR_INDEX or GL_DEPTH_COMPONENT.
 773                                  */
 774    GLenum Type;                 /* Internal type as GL enum value */
 775
 776    GLubyte RedBits;             /* Bits per texel component */
 777    GLubyte GreenBits;
 778    GLubyte BlueBits;
 779    GLubyte AlphaBits;
 780    GLubyte LuminanceBits;
 781    GLubyte IntensityBits;
 782    GLubyte IndexBits;
 783    GLubyte DepthBits;
 784
 785    GLint TexelBytes;
 786
 787    FetchTexelFunc FetchTexel1D; /* Texel fetch function pointers */
 788    FetchTexelFunc FetchTexel2D;
 789    FetchTexelFunc FetchTexel3D;
 790 };
 791
 792 /* Texture image record */
 793 struct gl_texture_image {
 794    GLenum Format;               /* GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA,
 795                                  * GL_INTENSITY, GL_RGB, GL_RGBA,
 796                                  * GL_COLOR_INDEX or GL_DEPTH_COMPONENT only.
 797                                  */
 798    GLint IntFormat;             /* Internal format as given by the user */
 799    GLuint Border;               /* 0 or 1 */
 800    GLuint Width;                /* = 2^WidthLog2 + 2*Border */
 801    GLuint Height;               /* = 2^HeightLog2 + 2*Border */
 802    GLuint Depth;                /* = 2^DepthLog2 + 2*Border */
 803    GLuint Width2;               /* = Width - 2*Border */
 804    GLuint Height2;              /* = Height - 2*Border */
 805    GLuint Depth2;               /* = Depth - 2*Border */
 806    GLuint WidthLog2;            /* = log2(Width2) */
 807    GLuint HeightLog2;           /* = log2(Height2) */
 808    GLuint DepthLog2;            /* = log2(Depth2) */
 809    GLuint MaxLog2;              /* = MAX(WidthLog2, HeightLog2) */
 810    GLvoid *Data;                /* Image data, accessed via FetchTexel() */
 811
 812    const struct gl_texture_format *TexFormat;
 813
 814    FetchTexelFunc FetchTexel;   /* Texel fetch function pointer */
 815
 816    GLboolean IsCompressed;      /* GL_ARB_texture_compression */
 817    GLuint CompressedSize;       /* GL_ARB_texture_compression */
 818
 819    /* For device driver: */
 820    void *DriverData;            /* Arbitrary device driver data */
 821 };
 822
 823
 824 /* Texture object record */
 825 struct gl_texture_object {
 826    _glthread_Mutex Mutex;       /* for thread safety */
 827    GLint RefCount;              /* reference count */
 828    GLuint Name;                 /* an unsigned integer */
 829    GLuint Dimensions;           /* 1 or 2 or 3 or 6 (cube map) */
 830    GLfloat Priority;            /* in [0,1] */
 831    GLchan BorderColor[4];
 832    GLenum WrapS;                /* Wrap modes are: GL_CLAMP, REPEAT */
 833    GLenum WrapT;                /*   GL_CLAMP_TO_EDGE, and          */
 834    GLenum WrapR;                /*   GL_CLAMP_TO_BORDER_ARB         */
 835    GLenum MinFilter;            /* minification filter */
 836    GLenum MagFilter;            /* magnification filter */
 837    GLfloat MinLod;              /* min lambda, OpenGL 1.2 */
 838    GLfloat MaxLod;              /* max lambda, OpenGL 1.2 */
 839    GLint BaseLevel;             /* min mipmap level, OpenGL 1.2 */
 840    GLint MaxLevel;              /* max mipmap level, OpenGL 1.2 */
 841    GLfloat MaxAnisotropy;       /* GL_EXT_texture_filter_anisotropic */
 842    GLboolean CompareFlag;       /* GL_SGIX_shadow */
 843    GLenum CompareOperator;      /* GL_SGIX_shadow */
 844    GLchan ShadowAmbient;        /* GL_SGIX_shadow_ambient */
 845    GLint _MaxLevel;             /* actual max mipmap level (q in the spec) */
 846    GLfloat _MaxLambda;          /* = _MaxLevel - BaseLevel (q - b in spec) */
 847    GLboolean GenerateMipmap;    /* GL_SGIS_generate_mipmap */
 848
 849    struct gl_texture_image *Image[MAX_TEXTURE_LEVELS];
 850
 851    /* Texture cube faces */
 852    /* Image[] is alias for *PosX[MAX_TEXTURE_LEVELS]; */
 853    struct gl_texture_image *NegX[MAX_TEXTURE_LEVELS];
 854    struct gl_texture_image *PosY[MAX_TEXTURE_LEVELS];
 855    struct gl_texture_image *NegY[MAX_TEXTURE_LEVELS];
 856    struct gl_texture_image *PosZ[MAX_TEXTURE_LEVELS];
 857    struct gl_texture_image *NegZ[MAX_TEXTURE_LEVELS];
 858
 859    /* GL_EXT_paletted_texture */
 860    struct gl_color_table Palette;
 861
 862    GLboolean Complete;                  /* Is texture object complete? */
 863    struct gl_texture_object *Next;      /* Next in linked list */
 864
 865    /* For device driver: */
 866    void *DriverData;    /* Arbitrary device driver data */
 867 };
 868
 869
 870
 871 /*
 872  * Texture units are new with the multitexture extension.
 873  */
 874 struct gl_texture_unit {
 875    GLuint Enabled;              /* bitmask of TEXTURE0_1D, _2D, _3D, _CUBE */
 876    GLuint _ReallyEnabled;       /* 0 or one of TEXTURE0_1D, _2D, _3D, _CUBE */
 877
 878    GLenum EnvMode;              /* GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
 879    GLfloat EnvColor[4];
 880    GLuint TexGenEnabled;        /* Bitwise-OR of [STRQ]_BIT values */
 881    GLenum GenModeS;             /* Tex coord generation mode, either */
 882    GLenum GenModeT;             /*      GL_OBJECT_LINEAR, or */
 883    GLenum GenModeR;             /*      GL_EYE_LINEAR, or    */
 884    GLenum GenModeQ;             /*      GL_SPHERE_MAP        */
 885    GLuint _GenBitS;
 886    GLuint _GenBitT;
 887    GLuint _GenBitR;
 888    GLuint _GenBitQ;
 889    GLuint _GenFlags;            /* bitwise or of GenBit[STRQ] */
 890    GLfloat ObjectPlaneS[4];
 891    GLfloat ObjectPlaneT[4];
 892    GLfloat ObjectPlaneR[4];
 893    GLfloat ObjectPlaneQ[4];
 894    GLfloat EyePlaneS[4];
 895    GLfloat EyePlaneT[4];
 896    GLfloat EyePlaneR[4];
 897    GLfloat EyePlaneQ[4];
 898    GLfloat LodBias;             /* for biasing mipmap levels */
 899
 900    /* GL_EXT_texture_env_combine */
 901    GLenum CombineModeRGB;       /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 902    GLenum CombineModeA;         /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 903    GLenum CombineSourceRGB[3];  /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 904    GLenum CombineSourceA[3];    /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 905    GLenum CombineOperandRGB[3]; /* SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
 906    GLenum CombineOperandA[3];   /* SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
 907    GLuint CombineScaleShiftRGB; /* 0, 1 or 2 */
 908    GLuint CombineScaleShiftA;   /* 0, 1 or 2 */
 909
 910    struct gl_texture_object *Current1D;
 911    struct gl_texture_object *Current2D;
 912    struct gl_texture_object *Current3D;
 913    struct gl_texture_object *CurrentCubeMap; /* GL_ARB_texture_cube_map */
 914
 915    struct gl_texture_object *_Current; /* Points to really enabled tex obj */
 916
 917    struct gl_texture_object Saved1D;  /* only used by glPush/PopAttrib */
 918    struct gl_texture_object Saved2D;
 919    struct gl_texture_object Saved3D;
 920    struct gl_texture_object SavedCubeMap;
 921 };
 922
 923
 924 struct gl_texture_attrib {
 925    /* multitexture */
 926    GLuint CurrentUnit;            /* Active texture unit */
 927
 928    GLuint _ReallyEnabled;     /* enables for all texture units: */
 929                              /* = (Unit[0]._ReallyEnabled << 0) | */
 930                              /*   (Unit[1]._ReallyEnabled << 4) | */
 931                              /*   (Unit[2]._ReallyEnabled << 8) | etc... */
 932
 933    GLuint _GenFlags;  /* for texgen */
 934    GLuint _TexGenEnabled;
 935    GLuint _TexMatEnabled;
 936
 937    struct gl_texture_unit Unit[MAX_TEXTURE_UNITS];
 938
 939    struct gl_texture_object *Proxy1D;
 940    struct gl_texture_object *Proxy2D;
 941    struct gl_texture_object *Proxy3D;
 942    struct gl_texture_object *ProxyCubeMap;
 943
 944    /* GL_EXT_shared_texture_palette */
 945    GLboolean SharedPalette;
 946    struct gl_color_table Palette;
 947 };
 948
 949
 950 struct gl_transform_attrib {
 951    GLenum MatrixMode;                           /* Matrix mode */
 952    GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];
 953    GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];  /* derived */
 954    GLboolean ClipEnabled[MAX_CLIP_PLANES];
 955    GLubyte   _AnyClip;                          /* How many ClipEnabled? */
 956    GLboolean Normalize;                         /* Normalize all normals? */
 957    GLboolean RescaleNormals;                    /* GL_EXT_rescale_normal */
 958    GLboolean RasterPositionUnclipped;           /* GL_IBM_rasterpos_clip */
 959 };
 960
 961
 962 struct gl_viewport_attrib {
 963    GLint X, Y;                  /* position */
 964    GLsizei Width, Height;       /* size */
 965    GLfloat Near, Far;           /* Depth buffer range */
 966    GLmatrix _WindowMap;         /* Mapping transformation as a matrix. */
 967 };
 968
 969
 970 /* For the attribute stack: */
 971 struct gl_attrib_node {
 972    GLbitfield kind;
 973    void *data;
 974    struct gl_attrib_node *next;
 975 };
 976
 977
 978 /*
 979  * Client pixel packing/unpacking attributes
 980  */
 981 struct gl_pixelstore_attrib {
 982    GLint Alignment;
 983    GLint RowLength;
 984    GLint SkipPixels;
 985    GLint SkipRows;
 986    GLint ImageHeight;     /* for GL_EXT_texture3D */
 987    GLint SkipImages;      /* for GL_EXT_texture3D */
 988    GLboolean SwapBytes;
 989    GLboolean LsbFirst;
 990 };
 991
 992
 993 #define CA_CLIENT_DATA     0x1  /* Data not alloced by mesa */
 994
 995
 996 /*
 997  * Client vertex array attributes
 998  */
 999 struct gl_client_array {
1000    GLint Size;
1001    GLenum Type;
1002    GLsizei Stride;              /* user-specified stride */
1003    GLsizei StrideB;             /* actual stride in bytes */
1004    void *Ptr;
1005    GLuint Flags;
1006    GLboolean Enabled;
1007 };
1008
1009
1010 struct gl_array_attrib {
1011    struct gl_client_array Vertex;            /* client data descriptors */
1012    struct gl_client_array Normal;
1013    struct gl_client_array Color;
1014    struct gl_client_array SecondaryColor;
1015    struct gl_client_array FogCoord;
1016    struct gl_client_array Index;
1017    struct gl_client_array TexCoord[MAX_TEXTURE_UNITS];
1018    struct gl_client_array EdgeFlag;
1019
1020    GLint TexCoordInterleaveFactor;
1021    GLint ActiveTexture;         /* Client Active Texture */
1022    GLuint LockFirst;
1023    GLuint LockCount;
1024
1025    GLuint _Enabled;             /* _NEW_ARRAY_* - bit set if array enabled */
1026    GLuint NewState;             /* _NEW_ARRAY_* */
1027 };
1028
1029
1030 struct gl_feedback {
1031    GLenum Type;
1032    GLuint _Mask;                /* FB_* bits */
1033    GLfloat *Buffer;
1034    GLuint BufferSize;
1035    GLuint Count;
1036 };
1037
1038
1039 struct gl_selection {
1040    GLuint *Buffer;
1041    GLuint BufferSize;   /* size of SelectBuffer */
1042    GLuint BufferCount;  /* number of values in SelectBuffer */
1043    GLuint Hits;         /* number of records in SelectBuffer */
1044    GLuint NameStackDepth;
1045    GLuint NameStack[MAX_NAME_STACK_DEPTH];
1046    GLboolean HitFlag;
1047    GLfloat HitMinZ, HitMaxZ;
1048 };
1049
1050
1051 /*
1052  * 1-D Evaluator control points
1053  */
1054 struct gl_1d_map {
1055    GLuint Order;        /* Number of control points */
1056    GLfloat u1, u2, du;  /* u1, u2, 1.0/(u2-u1) */
1057    GLfloat *Points;     /* Points to contiguous control points */
1058 };
1059
1060
1061 /*
1062  * 2-D Evaluator control points
1063  */
1064 struct gl_2d_map {
1065    GLuint Uorder;               /* Number of control points in U dimension */
1066    GLuint Vorder;               /* Number of control points in V dimension */
1067    GLfloat u1, u2, du;
1068    GLfloat v1, v2, dv;
1069    GLfloat *Points;             /* Points to contiguous control points */
1070 };
1071
1072
1073 /*
1074  * All evalutator control points
1075  */
1076 struct gl_evaluators {
1077    /* 1-D maps */
1078    struct gl_1d_map Map1Vertex3;
1079    struct gl_1d_map Map1Vertex4;
1080    struct gl_1d_map Map1Index;
1081    struct gl_1d_map Map1Color4;
1082    struct gl_1d_map Map1Normal;
1083    struct gl_1d_map Map1Texture1;
1084    struct gl_1d_map Map1Texture2;
1085    struct gl_1d_map Map1Texture3;
1086    struct gl_1d_map Map1Texture4;
1087
1088    /* 2-D maps */
1089    struct gl_2d_map Map2Vertex3;
1090    struct gl_2d_map Map2Vertex4;
1091    struct gl_2d_map Map2Index;
1092    struct gl_2d_map Map2Color4;
1093    struct gl_2d_map Map2Normal;
1094    struct gl_2d_map Map2Texture1;
1095    struct gl_2d_map Map2Texture2;
1096    struct gl_2d_map Map2Texture3;
1097    struct gl_2d_map Map2Texture4;
1098 };
1099
1100
1101 /*
1102  * State which can be shared by multiple contexts:
1103  */
1104 struct gl_shared_state {
1105    _glthread_Mutex Mutex;                  /* for thread safety */
1106    GLint RefCount;                         /* Reference count */
1107    struct _mesa_HashTable *DisplayList;    /* Display lists hash table */
1108    struct _mesa_HashTable *TexObjects;     /* Texture objects hash table */
1109    struct gl_texture_object *TexObjectList;/* Linked list of texture objects */
1110
1111    /* Default texture objects (shared by all multi-texture units) */
1112    struct gl_texture_object *Default1D;
1113    struct gl_texture_object *Default2D;
1114    struct gl_texture_object *Default3D;
1115    struct gl_texture_object *DefaultCubeMap;
1116
1117    void *DriverData;  /* Device driver shared state */
1118 };
1119
1120
1121 /*
1122  * A "frame buffer" is a color buffer and its optional ancillary buffers:
1123  * depth, accum, stencil, and software-simulated alpha buffers.
1124  * In C++ terms, think of this as a base class from which device drivers
1125  * will make derived classes.
1126  */
1127 struct gl_frame_buffer {
1128    GLvisual Visual;             /* The corresponding visual */
1129
1130    GLint Width, Height;         /* size of frame buffer in pixels */
1131
1132    GLboolean UseSoftwareDepthBuffer;
1133    GLboolean UseSoftwareAccumBuffer;
1134    GLboolean UseSoftwareStencilBuffer;
1135    GLboolean UseSoftwareAlphaBuffers;
1136
1137    /* Software depth (aka Z) buffer */
1138    GLvoid *DepthBuffer;         /* array [Width*Height] of GLushort or GLuint*/
1139
1140    /* Software stencil buffer */
1141    GLstencil *Stencil;          /* array [Width*Height] of GLstencil values */
1142
1143    /* Software accumulation buffer */
1144    GLaccum *Accum;              /* array [4*Width*Height] of GLaccum values */
1145
1146    /* Software alpha planes */
1147    GLchan *FrontLeftAlpha;      /* array [Width*Height] of GLubyte */
1148    GLchan *BackLeftAlpha;       /* array [Width*Height] of GLubyte */
1149    GLchan *FrontRightAlpha;     /* array [Width*Height] of GLubyte */
1150    GLchan *BackRightAlpha;      /* array [Width*Height] of GLubyte */
1151    GLchan *Alpha;               /* Points to current alpha buffer */
1152
1153    /* Drawing bounds: intersection of window size and scissor box */
1154    GLint _Xmin, _Ymin;  /* inclusive */
1155    GLint _Xmax, _Ymax;  /* exclusive */
1156 };
1157
1158
1159 /*
1160  * Constants which may be overriden by device driver during context creation
1161  * but are never changed after that.
1162  */
1163 struct gl_constants {
1164    GLint MaxTextureLevels;
1165    GLint Max3DTextureLevels;
1166    GLint MaxCubeTextureLevels;
1167    GLuint MaxTextureUnits;
1168    GLfloat MaxTextureMaxAnisotropy;     /* GL_EXT_texture_filter_anisotropic */
1169    GLuint MaxArrayLockSize;
1170    GLint SubPixelBits;
1171    GLfloat MinPointSize, MaxPointSize;          /* aliased */
1172    GLfloat MinPointSizeAA, MaxPointSizeAA;      /* antialiased */
1173    GLfloat PointSizeGranularity;
1174    GLfloat MinLineWidth, MaxLineWidth;          /* aliased */
1175    GLfloat MinLineWidthAA, MaxLineWidthAA;      /* antialiased */
1176    GLfloat LineWidthGranularity;
1177    GLuint NumAuxBuffers;
1178    GLuint MaxColorTableSize;
1179    GLuint MaxConvolutionWidth;
1180    GLuint MaxConvolutionHeight;
1181    GLuint NumCompressedTextureFormats;  /* GL_ARB_texture_compression */
1182    GLenum CompressedTextureFormats[MAX_COMPRESSED_TEXTURE_FORMATS];
1183    GLuint MaxClipPlanes;
1184    GLuint MaxLights;
1185 };
1186
1187
1188 /*
1189  * List of extensions.
1190  */
1191 struct extension;
1192 struct gl_extensions {
1193    char *ext_string;
1194    struct extension *ext_list;
1195    /* Flags to quickly test if certain extensions are available.
1196     * Not every extension needs to have such a flag, but it's encouraged.
1197     */
1198    GLboolean ARB_imaging;
1199    GLboolean ARB_multisample;
1200    GLboolean ARB_multitexture;
1201    GLboolean ARB_texture_border_clamp;
1202    GLboolean ARB_texture_compression;
1203    GLboolean ARB_texture_cube_map;
1204    GLboolean ARB_texture_env_combine;
1205    GLboolean ARB_texture_env_dot3;
1206    GLboolean EXT_blend_color;
1207    GLboolean EXT_blend_func_separate;
1208    GLboolean EXT_blend_logic_op;
1209    GLboolean EXT_blend_minmax;
1210    GLboolean EXT_blend_subtract;
1211    GLboolean EXT_clip_volume_hint;
1212    GLboolean EXT_convolution;
1213    GLboolean EXT_compiled_vertex_array;
1214    GLboolean EXT_fog_coord;
1215    GLboolean EXT_histogram;
1216    GLboolean EXT_packed_pixels;
1217    GLboolean EXT_paletted_texture;
1218    GLboolean EXT_point_parameters;
1219    GLboolean EXT_polygon_offset;
1220    GLboolean EXT_rescale_normal;
1221    GLboolean EXT_secondary_color;
1222    GLboolean EXT_shared_texture_palette;
1223    GLboolean EXT_stencil_wrap;
1224    GLboolean EXT_texture3D;
1225    GLboolean EXT_texture_compression_s3tc;
1226    GLboolean EXT_texture_env_add;
1227    GLboolean EXT_texture_env_combine;
1228    GLboolean EXT_texture_env_dot3;
1229    GLboolean EXT_texture_filter_anisotropic;
1230    GLboolean EXT_texture_object;
1231    GLboolean EXT_texture_lod_bias;
1232    GLboolean EXT_vertex_array_set;
1233    GLboolean HP_occlusion_test;
1234    GLboolean IBM_rasterpos_clip;
1235    GLboolean INGR_blend_func_separate;
1236    GLboolean MESA_window_pos;
1237    GLboolean MESA_resize_buffers;
1238    GLboolean MESA_sprite_point;
1239    GLboolean NV_blend_square;
1240    GLboolean NV_texgen_reflection;
1241    GLboolean SGI_color_matrix;
1242    GLboolean SGI_color_table;
1243    GLboolean SGIS_generate_mipmap;
1244    GLboolean SGIS_pixel_texture;
1245    GLboolean SGIS_texture_edge_clamp;
1246    GLboolean SGIX_depth_texture;
1247    GLboolean SGIX_pixel_texture;
1248    GLboolean SGIX_shadow;
1249    GLboolean SGIX_shadow_ambient;
1250    GLboolean _3DFX_texture_compression_FXT1;
1251 };
1252
1253
1254
1255 /*
1256  * Bits for image transfer operations (ctx->ImageTransferState).
1257  */
1258 #define IMAGE_SCALE_BIAS_BIT                      0x1
1259 #define IMAGE_SHIFT_OFFSET_BIT                    0x2
1260 #define IMAGE_MAP_COLOR_BIT                       0x4
1261 #define IMAGE_COLOR_TABLE_BIT                     0x8
1262 #define IMAGE_CONVOLUTION_BIT                     0x10
1263 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS         0x20
1264 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT    0x40
1265 #define IMAGE_COLOR_MATRIX_BIT                    0x80
1266 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT   0x100
1267 #define IMAGE_HISTOGRAM_BIT                       0x200
1268 #define IMAGE_MIN_MAX_BIT                         0x400
1269
1270 /* transfer ops up to convolution: */
1271 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT |     \
1272                                     IMAGE_SHIFT_OFFSET_BIT |   \
1273                                     IMAGE_MAP_COLOR_BIT |      \
1274                                     IMAGE_COLOR_TABLE_BIT)
1275
1276 /* transfer ops after convolution: */
1277 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS |      \
1278                                      IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
1279                                      IMAGE_COLOR_MATRIX_BIT |                 \
1280                                      IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
1281                                      IMAGE_HISTOGRAM_BIT |                    \
1282                                      IMAGE_MIN_MAX_BIT)
1283
1284
1285 /*
1286  * Bits to indicate what state has changed.  6 unused flags.
1287  */
1288 #define _NEW_MODELVIEW          0x1        /* ctx->ModelView */
1289 #define _NEW_PROJECTION         0x2        /* ctx->Projection */
1290 #define _NEW_TEXTURE_MATRIX     0x4        /* ctx->TextureMatrix */
1291 #define _NEW_COLOR_MATRIX       0x8        /* ctx->ColorMatrix */
1292 #define _NEW_ACCUM              0x10       /* ctx->Accum */
1293 #define _NEW_COLOR              0x20       /* ctx->Color */
1294 #define _NEW_DEPTH              0x40       /* ctx->Depth */
1295 #define _NEW_EVAL               0x80       /* ctx->Eval, ctx->EvalMap */
1296 #define _NEW_FOG                0x100      /* ctx->Fog */
1297 #define _NEW_HINT               0x200      /* ctx->Hint */
1298 #define _NEW_LIGHT              0x400      /* ctx->Light */
1299 #define _NEW_LINE               0x800      /* ctx->Line */
1300 #define _NEW_PIXEL              0x1000     /* ctx->Pixel */
1301 #define _NEW_POINT              0x2000     /* ctx->Point */
1302 #define _NEW_POLYGON            0x4000     /* ctx->Polygon */
1303 #define _NEW_POLYGONSTIPPLE     0x8000     /* ctx->PolygonStipple */
1304 #define _NEW_SCISSOR            0x10000    /* ctx->Scissor */
1305 #define _NEW_STENCIL            0x20000    /* ctx->Stencil */
1306 #define _NEW_TEXTURE            0x40000    /* ctx->Texture */
1307 #define _NEW_TRANSFORM          0x80000    /* ctx->Transform */
1308 #define _NEW_VIEWPORT           0x100000   /* ctx->Viewport */
1309 #define _NEW_PACKUNPACK         0x200000   /* ctx->Pack, ctx->Unpack */
1310 #define _NEW_ARRAY              0x400000   /* ctx->Array */
1311 #define _NEW_RENDERMODE         0x800000   /* RenderMode, Feedback, Select */
1312 #define _NEW_BUFFERS            0x1000000  /* ctx->Visual, ctx->DrawBuffer, */
1313 #define _NEW_MULTISAMPLE        0x2000000  /* ctx->Multisample */
1314 #define _NEW_ALL ~0
1315
1316
1317
1318 /* Bits to track array state changes (also used to summarize array enabled)
1319  */
1320 #define _NEW_ARRAY_VERTEX           0x1
1321 #define _NEW_ARRAY_COLOR            0x2
1322 #define _NEW_ARRAY_NORMAL           0x4
1323 #define _NEW_ARRAY_INDEX            0x8
1324 #define _NEW_ARRAY_EDGEFLAG         0x10
1325 #define _NEW_ARRAY_SECONDARYCOLOR   0x20
1326 #define _NEW_ARRAY_FOGCOORD         0x40
1327 #define _NEW_ARRAY_TEXCOORD_0       0x80
1328 #define _NEW_ARRAY_TEXCOORD_1       0x100
1329 #define _NEW_ARRAY_TEXCOORD_2       0x200
1330 #define _NEW_ARRAY_TEXCOORD_3       0x400
1331 #define _NEW_ARRAY_TEXCOORD_4       0x800
1332 #define _NEW_ARRAY_TEXCOORD_5       0x1000
1333 #define _NEW_ARRAY_TEXCOORD_6       0x2000
1334 #define _NEW_ARRAY_TEXCOORD_7       0x4000
1335 #define _NEW_ARRAY_ALL              0x7fff
1336
1337 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
1338
1339 /* A bunch of flags that we think might be useful to drivers.
1340  */
1341 #define DD_FLATSHADE                0x1
1342 #define DD_SEPARATE_SPECULAR        0x2
1343 #define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
1344 #define DD_TRI_LIGHT_TWOSIDE        0x8
1345 #define DD_TRI_UNFILLED             0x10
1346 #define DD_TRI_SMOOTH               0x20
1347 #define DD_TRI_STIPPLE              0x40
1348 #define DD_TRI_OFFSET               0x80
1349 #define DD_LINE_SMOOTH              0x100
1350 #define DD_LINE_STIPPLE             0x200
1351 #define DD_LINE_WIDTH               0x400
1352 #define DD_POINT_SMOOTH             0x800
1353 #define DD_POINT_SIZE               0x1000
1354 #define DD_POINT_ATTEN              0x2000
1355
1356 /* Define the state changes under which each of these bits might change
1357  */
1358 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
1359 #define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG)
1360 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
1361 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
1362 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
1363 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
1364 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
1365 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
1366 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
1367 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
1368 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
1369 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
1370 #define _DD_NEW_POINT_SIZE               _NEW_POINT
1371 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
1372
1373 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |         \
1374                                            _NEW_TEXTURE |       \
1375                                            _NEW_POINT |         \
1376                                            _NEW_MODELVIEW)
1377
1378 #define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |         \
1379                                            _NEW_TEXTURE)
1380
1381 #define _IMAGE_NEW_TRANSFER_STATE         (_NEW_PIXEL | _NEW_COLOR_MATRIX)
1382
1383
1384 #define NEED_NORMALS_TEXGEN      0x1
1385 #define NEED_NORMALS_LIGHT       0x2
1386
1387 #define NEED_EYE_TEXGEN          0x1
1388 #define NEED_EYE_LIGHT           0x2
1389 #define NEED_EYE_LIGHT_MODELVIEW 0x4
1390 #define NEED_EYE_POINT_ATTEN     0x8
1391
1392
1393 /*
1394  * Forward declaration of display list datatypes:
1395  */
1396 union node;
1397 typedef union node Node;
1398
1399
1400 /* This has to be included here. */
1401 #include "dd.h"
1402
1403
1404 /*
1405  * Core Mesa's support for tnl modules:
1406  */
1407 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
1408
1409 struct gl_tnl_module {
1410    /* Vertex format to be lazily swapped into current dispatch.
1411     */
1412    GLvertexformat *Current;
1413
1414    /* Record of functions swapped out.  On restore, only need to swap
1415     * these functions back in.
1416     */
1417    void *Swapped[NUM_VERTEX_FORMAT_ENTRIES][2];
1418    GLuint SwapCount;
1419 };
1420
1421
1422 /*
1423  * The library context:
1424  */
1425 struct __GLcontextRec {
1426    /*
1427    ** Os related interfaces; these *must* be the first members of this
1428    ** structure, because they are exposed to the outside world (i.e. GLX
1429    ** extension).
1430    */
1431    __GLimports imports;
1432    __GLexports exports;
1433
1434    /* State possibly shared with other contexts in the address space */
1435    struct gl_shared_state *Shared;
1436
1437    /* API function pointer tables */
1438    struct _glapi_table *Save;   /* Display list save funcs */
1439    struct _glapi_table *Exec;   /* Execute funcs */
1440    struct _glapi_table *CurrentDispatch;  /* == Save or Exec !! */
1441
1442    GLboolean ExecPrefersFloat;  /* What preference for color conversion? */
1443    GLboolean SavePrefersFloat;
1444
1445    GLvisual Visual;
1446    GLframebuffer *DrawBuffer;   /* buffer for writing */
1447    GLframebuffer *ReadBuffer;   /* buffer for reading */
1448
1449    /* Driver function pointer table */
1450    struct dd_function_table Driver;
1451
1452    void *DriverCtx;     /* Points to device driver context/state */
1453    void *DriverMgrCtx;  /* Points to device driver manager (optional)*/
1454
1455    /* Core/Driver constants */
1456    struct gl_constants Const;
1457
1458    /* Modelview matrix and stack */
1459    GLmatrix ModelView;           /* current matrix, not stored on stack */
1460    GLuint ModelViewStackDepth;
1461    GLmatrix ModelViewStack[MAX_MODELVIEW_STACK_DEPTH - 1];
1462
1463    /* Projection matrix and stack */
1464    GLmatrix ProjectionMatrix;    /* current matrix, not stored on stack */
1465    GLuint ProjectionStackDepth;
1466    GLmatrix ProjectionStack[MAX_PROJECTION_STACK_DEPTH - 1];
1467
1468    /* Combined modelview and projection matrix */
1469    GLmatrix _ModelProjectMatrix;
1470
1471    /* Texture matrix and stack */
1472    GLmatrix TextureMatrix[MAX_TEXTURE_UNITS];
1473    GLuint TextureStackDepth[MAX_TEXTURE_UNITS];
1474    GLmatrix TextureStack[MAX_TEXTURE_UNITS][MAX_TEXTURE_STACK_DEPTH - 1];
1475
1476    /* Color matrix and stack */
1477    GLmatrix ColorMatrix;
1478    GLuint ColorStackDepth;
1479    GLmatrix ColorStack[MAX_COLOR_STACK_DEPTH - 1];
1480
1481    /* Display lists */
1482    GLuint CallDepth;            /* Current recursion calling depth */
1483    GLboolean ExecuteFlag;       /* Execute GL commands? */
1484    GLboolean CompileFlag;       /* Compile GL commands into display list? */
1485    Node *CurrentListPtr;        /* Head of list being compiled */
1486    GLuint CurrentListNum;       /* Number of the list being compiled */
1487    Node *CurrentBlock;          /* Pointer to current block of nodes */
1488    GLuint CurrentPos;           /* Index into current block of nodes */
1489
1490    /* Extensions */
1491    struct gl_extensions Extensions;
1492
1493    /* Renderer attribute stack */
1494    GLuint AttribStackDepth;
1495    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
1496
1497    /* Renderer attribute groups */
1498    struct gl_accum_attrib       Accum;
1499    struct gl_colorbuffer_attrib Color;
1500    struct gl_current_attrib     Current;
1501    struct gl_depthbuffer_attrib Depth;
1502    struct gl_eval_attrib        Eval;
1503    struct gl_fog_attrib         Fog;
1504    struct gl_hint_attrib        Hint;
1505    struct gl_light_attrib       Light;
1506    struct gl_line_attrib        Line;
1507    struct gl_list_attrib        List;
1508    struct gl_multisample_attrib Multisample;
1509    struct gl_pixel_attrib       Pixel;
1510    struct gl_point_attrib       Point;
1511    struct gl_polygon_attrib     Polygon;
1512    GLuint PolygonStipple[32];
1513    struct gl_scissor_attrib     Scissor;
1514    struct gl_stencil_attrib     Stencil;
1515    struct gl_texture_attrib     Texture;
1516    struct gl_transform_attrib   Transform;
1517    struct gl_viewport_attrib    Viewport;
1518
1519    /* Other attribute groups */
1520    struct gl_histogram_attrib   Histogram;
1521    struct gl_minmax_attrib      MinMax;
1522    struct gl_convolution_attrib Convolution1D;
1523    struct gl_convolution_attrib Convolution2D;
1524    struct gl_convolution_attrib Separable2D;
1525
1526    /* Client attribute stack */
1527    GLuint ClientAttribStackDepth;
1528    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
1529
1530    /* Client attribute groups */
1531    struct gl_array_attrib       Array;  /* Vertex arrays */
1532    struct gl_pixelstore_attrib  Pack;   /* Pixel packing */
1533    struct gl_pixelstore_attrib  Unpack; /* Pixel unpacking */
1534
1535    struct gl_evaluators EvalMap;   /* All evaluators */
1536    struct gl_feedback   Feedback;  /* Feedback */
1537    struct gl_selection  Select;    /* Selection */
1538
1539    struct gl_color_table ColorTable;       /* Pre-convolution */
1540    struct gl_color_table ProxyColorTable;  /* Pre-convolution */
1541    struct gl_color_table PostConvolutionColorTable;
1542    struct gl_color_table ProxyPostConvolutionColorTable;
1543    struct gl_color_table PostColorMatrixColorTable;
1544    struct gl_color_table ProxyPostColorMatrixColorTable;
1545
1546    GLenum ErrorValue;        /* Last error code */
1547    GLenum RenderMode;        /* either GL_RENDER, GL_SELECT, GL_FEEDBACK */
1548    GLuint NewState;          /* bitwise-or of _NEW_* flags */
1549
1550    /* Derived */
1551    GLuint _TriangleCaps;      /* bitwise-or of DD_* flags */
1552    GLuint _ImageTransferState;/* bitwise-or of IMAGE_*_BIT flags */
1553    GLfloat _EyeZDir[3];
1554    GLfloat _ModelViewInvScale;
1555    GLuint _NeedEyeCoords;
1556    GLuint _NeedNormals;    /* Are vertex normal vectors needed? */
1557
1558    struct gl_shine_tab *_ShineTable[2];  /* Active shine tables */
1559    struct gl_shine_tab *_ShineTabList;   /* Mru list of inactive shine tables */
1560
1561    struct gl_list_extensions listext; /* driver dlist extensions */
1562
1563
1564    GLboolean OcclusionResult;  /* GL_HP_occlusion_test */
1565    GLboolean OcclusionResultSaved;  /* GL_HP_occlusion_test */
1566
1567    /* Z buffer stuff */
1568    GLuint DepthMax;             /* Max depth buffer value */
1569    GLfloat DepthMaxF;           /* Float max depth buffer value */
1570    GLfloat MRD;                 /* minimum resolvable difference in Z values */
1571
1572    /* Should 3Dfx Glide driver catch signals? */
1573    GLboolean CatchSignals;
1574
1575    /* For debugging/development only */
1576    GLboolean NoRaster;
1577    GLboolean FirstTimeCurrent;
1578
1579    /* Dither disable via MESA_NO_DITHER env var */
1580    GLboolean NoDither;
1581
1582    GLboolean Rendering;
1583
1584 #if defined(MESA_TRACE)
1585    struct _glapi_table *TraceDispatch;
1586    trace_context_t     *TraceCtx;
1587 #else
1588    void *TraceDispatch;
1589    void *TraceCtx;
1590 #endif
1591
1592    /* Core tnl module support */
1593    struct gl_tnl_module TnlModule;
1594
1595    /* Hooks for module contexts.  These will eventually live
1596     * in the driver or elsewhere.
1597     */
1598    void *swrast_context;
1599    void *swsetup_context;
1600    void *swtnl_context;
1601    void *swtnl_im;
1602    void *acache_context;
1603    void *aelt_context;
1604 };
1605
1606
1607 /* The string names for GL_POINT, GL_LINE_LOOP, etc */
1608 extern const char *_mesa_prim_name[GL_POLYGON+4];
1609
1610
1611 #ifdef MESA_DEBUG
1612 extern int MESA_VERBOSE;
1613 extern int MESA_DEBUG_FLAGS;
1614 #else
1615 # define MESA_VERBOSE 0
1616 # define MESA_DEBUG_FLAGS 0
1617 # ifndef NDEBUG
1618 #  define NDEBUG
1619 # endif
1620 #endif
1621
1622
1623 enum _verbose {
1624    VERBOSE_VARRAY               = 0x0001,
1625    VERBOSE_TEXTURE              = 0x0002,
1626    VERBOSE_IMMEDIATE            = 0x0004,
1627    VERBOSE_PIPELINE             = 0x0008,
1628    VERBOSE_DRIVER               = 0x0010,
1629    VERBOSE_STATE                = 0x0020,
1630    VERBOSE_API                  = 0x0040,
1631    VERBOSE_DISPLAY_LIST         = 0x0200,
1632    VERBOSE_LIGHTING             = 0x0400
1633 };
1634
1635
1636 enum _debug {
1637    DEBUG_ALWAYS_FLUSH           = 0x1
1638 };
1639
1640
1641
1642 #define Elements(x) sizeof(x)/sizeof(*(x))
1643
1644
1645
1646 /* Eventually let the driver specify what statechanges require a flush:
1647  */
1648 #define FLUSH_VERTICES(ctx, newstate)                                   \
1649 do {                                                                    \
1650    if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES)                   \
1651       ctx->Driver.FlushVertices(ctx, FLUSH_STORED_VERTICES);            \
1652    ctx->NewState |= newstate;                                           \
1653 } while (0)
1654
1655 #define FLUSH_CURRENT(ctx, newstate)                                    \
1656 do {                                                                    \
1657    if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT)                    \
1658       ctx->Driver.FlushVertices(ctx, FLUSH_UPDATE_CURRENT);             \
1659    ctx->NewState |= newstate;                                           \
1660 } while (0)
1661
1662 #define ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval)               \
1663 do {                                                                    \
1664    if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {    \
1665       _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" );            \
1666       return retval;                                                    \
1667    }                                                                    \
1668 } while (0)
1669
1670 #define ASSERT_OUTSIDE_BEGIN_END(ctx)                                   \
1671 do {                                                                    \
1672    if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {    \
1673       _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" );            \
1674       return;                                                           \
1675    }                                                                    \
1676 } while (0)
1677
1678 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx)                         \
1679 do {                                                                    \
1680    ASSERT_OUTSIDE_BEGIN_END(ctx);                                       \
1681    FLUSH_VERTICES(ctx, 0);                                              \
1682 } while (0)
1683
1684 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, retval)     \
1685 do {                                                                    \
1686    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval);                   \
1687    FLUSH_VERTICES(ctx, 0);                                              \
1688 } while (0)
1689
1690
1691
1692
1693 #endif /* TYPES_H */