src/mesa/main/mtypes.h

   1 /* $Id: mtypes.h,v 1.45 2001/06/12 22:08:41 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 #else
  78 #  error "illegal number of accumulation bits"
  79 #endif
  80
  81
  82 /*
  83  * Stencil buffer data type:
  84  */
  85 #if STENCIL_BITS==8
  86    typedef GLubyte GLstencil;
  87 #  define STENCIL_MAX 0xff
  88 #elif STENCIL_BITS==16
  89    typedef GLushort GLstencil;
  90 #  define STENCIL_MAX 0xffff
  91 #else
  92 #  error "illegal number of stencil bits"
  93 #endif
  94
  95
  96 /*
  97  * Depth buffer data type:
  98  */
  99 typedef GLuint GLdepth;  /* Must be 32-bits! */
 100
 101
 102 /*
 103  * Fixed point data type:
 104  */
 105 typedef int GLfixed;
 106
 107
 108
 109 /*
 110  * Some forward type declarations
 111  */
 112 struct _mesa_HashTable;
 113 struct gl_texture_image;
 114 struct gl_texture_object;
 115 typedef struct __GLcontextRec GLcontext;
 116 typedef struct __GLcontextModesRec GLvisual;
 117 typedef struct gl_frame_buffer GLframebuffer;
 118
 119
 120
 121 /* Maximum number of temporary vertices required for clipping.  (Used
 122  * in array_cache and tnl modules).
 123  */
 124 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 125
 126
 127 /* Data structure for color tables */
 128 struct gl_color_table {
 129    GLenum Format;         /* GL_ALPHA, GL_RGB, GL_RGB, etc */
 130    GLenum IntFormat;
 131    GLuint Size;           /* number of entries (rows) in table */
 132    GLvoid *Table;         /* either GLfloat * or GLchan * */
 133    GLboolean FloatTable;  /* are entries stored as floats? */
 134    GLubyte RedSize;
 135    GLubyte GreenSize;
 136    GLubyte BlueSize;
 137    GLubyte AlphaSize;
 138    GLubyte LuminanceSize;
 139    GLubyte IntensitySize;
 140 };
 141
 142
 143 /*
 144  * Bit flags used for updating material values.
 145  */
 146 #define FRONT_AMBIENT_BIT     0x1
 147 #define BACK_AMBIENT_BIT      0x2
 148 #define FRONT_DIFFUSE_BIT     0x4
 149 #define BACK_DIFFUSE_BIT      0x8
 150 #define FRONT_SPECULAR_BIT   0x10
 151 #define BACK_SPECULAR_BIT    0x20
 152 #define FRONT_EMISSION_BIT   0x40
 153 #define BACK_EMISSION_BIT    0x80
 154 #define FRONT_SHININESS_BIT 0x100
 155 #define BACK_SHININESS_BIT  0x200
 156 #define FRONT_INDEXES_BIT   0x400
 157 #define BACK_INDEXES_BIT    0x800
 158
 159 #define FRONT_MATERIAL_BITS     (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT | \
 160                                  FRONT_DIFFUSE_BIT | FRONT_SPECULAR_BIT | \
 161                                  FRONT_SHININESS_BIT | FRONT_INDEXES_BIT)
 162
 163 #define BACK_MATERIAL_BITS      (BACK_EMISSION_BIT | BACK_AMBIENT_BIT | \
 164                                  BACK_DIFFUSE_BIT | BACK_SPECULAR_BIT | \
 165                                  BACK_SHININESS_BIT | BACK_INDEXES_BIT)
 166
 167 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 168
 169
 170
 171 /*
 172  * Specular exponent and material shininess lookup table sizes:
 173  */
 174 #define EXP_TABLE_SIZE 512
 175 #define SHINE_TABLE_SIZE 256
 176
 177 struct gl_shine_tab {
 178    struct gl_shine_tab *next, *prev;
 179    GLfloat tab[SHINE_TABLE_SIZE+1];
 180    GLfloat shininess;
 181    GLuint refcount;
 182 };
 183
 184
 185 struct gl_light {
 186    struct gl_light *next;               /* double linked list with sentinel */
 187    struct gl_light *prev;
 188
 189    GLfloat Ambient[4];          /* ambient color */
 190    GLfloat Diffuse[4];          /* diffuse color */
 191    GLfloat Specular[4];         /* specular color */
 192    GLfloat EyePosition[4];      /* position in eye coordinates */
 193    GLfloat EyeDirection[4];     /* spotlight dir in eye coordinates */
 194    GLfloat SpotExponent;
 195    GLfloat SpotCutoff;          /* in degress */
 196    GLfloat _CosCutoff;          /* = MAX(0, cos(SpotCutoff)) */
 197    GLfloat ConstantAttenuation;
 198    GLfloat LinearAttenuation;
 199    GLfloat QuadraticAttenuation;
 200    GLboolean Enabled;           /* On/off flag */
 201
 202    /* Derived fields */
 203    GLuint _Flags;               /* State */
 204
 205    GLfloat _Position[4];        /* position in eye/obj coordinates */
 206    GLfloat _VP_inf_norm[3];     /* Norm direction to infinite light */
 207    GLfloat _h_inf_norm[3];      /* Norm( _VP_inf_norm + <0,0,1> ) */
 208    GLfloat _NormDirection[4];   /* normalized spotlight direction */
 209    GLfloat _VP_inf_spot_attenuation;
 210
 211    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /* to replace a pow() call */
 212    GLfloat _MatAmbient[2][3];   /* material ambient * light ambient */
 213    GLfloat _MatDiffuse[2][3];   /* material diffuse * light diffuse */
 214    GLfloat _MatSpecular[2][3];  /* material spec * light specular */
 215    GLfloat _dli;                /* CI diffuse light intensity */
 216    GLfloat _sli;                /* CI specular light intensity */
 217 };
 218
 219
 220 struct gl_lightmodel {
 221    GLfloat Ambient[4];          /* ambient color */
 222    GLboolean LocalViewer;       /* Local (or infinite) view point? */
 223    GLboolean TwoSide;           /* Two (or one) sided lighting? */
 224    GLenum ColorControl;         /* either GL_SINGLE_COLOR */
 225                                 /* or GL_SEPARATE_SPECULAR_COLOR */
 226 };
 227
 228
 229 struct gl_material
 230 {
 231    GLfloat Ambient[4];
 232    GLfloat Diffuse[4];
 233    GLfloat Specular[4];
 234    GLfloat Emission[4];
 235    GLfloat Shininess;
 236    GLfloat AmbientIndex;        /* for color index lighting */
 237    GLfloat DiffuseIndex;        /* for color index lighting */
 238    GLfloat SpecularIndex;       /* for color index lighting */
 239 };
 240
 241
 242 /*
 243  * Attribute structures:
 244  *    We define a struct for each attribute group to make pushing and
 245  *    popping attributes easy.  Also it's a good organization.
 246  */
 247 struct gl_accum_attrib {
 248    GLfloat ClearColor[4];       /* Accumulation buffer clear color */
 249 };
 250
 251
 252 /*
 253  * Used in DrawDestMask below
 254  */
 255 #define FRONT_LEFT_BIT  1
 256 #define FRONT_RIGHT_BIT 2
 257 #define BACK_LEFT_BIT   4
 258 #define BACK_RIGHT_BIT  8
 259
 260
 261 struct gl_colorbuffer_attrib {
 262    GLuint ClearIndex;                   /* Index to use for glClear */
 263    GLchan ClearColor[4];                /* Color to use for glClear */
 264
 265    GLuint IndexMask;                    /* Color index write mask */
 266    GLubyte ColorMask[4];                /* Each flag is 0xff or 0x0 */
 267
 268    GLenum DrawBuffer;                   /* Which buffer to draw into */
 269    GLenum DriverDrawBuffer;             /* Current device driver dest buffer */
 270    GLboolean MultiDrawBuffer;           /* Drawing to mutliple buffers? */
 271    GLubyte DrawDestMask;                /* bitwise-OR of bitflags above */
 272
 273    /* alpha testing */
 274    GLboolean AlphaEnabled;              /* Alpha test enabled flag */
 275    GLenum AlphaFunc;                    /* Alpha test function */
 276    GLchan AlphaRef;                     /* Alpha ref value as GLchan */
 277
 278    /* blending */
 279    GLboolean BlendEnabled;              /* Blending enabled flag */
 280    GLenum BlendSrcRGB;                  /* Blending source operator */
 281    GLenum BlendDstRGB;                  /* Blending destination operator */
 282    GLenum BlendSrcA;                    /* GL_INGR_blend_func_separate */
 283    GLenum BlendDstA;                    /* GL_INGR_blend_func_separate */
 284    GLenum BlendEquation;
 285    GLfloat BlendColor[4];
 286
 287    /* logic op */
 288    GLenum LogicOp;                      /* Logic operator */
 289    GLboolean IndexLogicOpEnabled;       /* Color index logic op enabled flag */
 290    GLboolean ColorLogicOpEnabled;       /* RGBA logic op enabled flag */
 291
 292    GLboolean DitherFlag;                /* Dither enable flag */
 293 };
 294
 295
 296 struct gl_current_attrib {
 297    /* These values valid only when FLUSH_VERTICES has been called.
 298     */
 299    GLfloat Normal[3];                           /* Current vertex normal */
 300    GLfloat Color[4];                            /* Current RGBA color */
 301    GLfloat SecondaryColor[4];                   /* Current secondary color */
 302    GLfloat FogCoord;                            /* Current Fog coord */
 303    GLuint Index;                                /* Current color index */
 304    GLboolean EdgeFlag;                          /* Current edge flag */
 305    GLfloat Texcoord[MAX_TEXTURE_UNITS][4];      /* Current texture coords */
 306
 307    /* These values are always valid.
 308     */
 309    GLfloat RasterPos[4];                        /* Current raster position */
 310    GLfloat RasterDistance;                      /* Current raster distance */
 311    GLfloat RasterColor[4];                      /* Current raster color */
 312    GLuint  RasterIndex;                         /* Current raster index */
 313    GLfloat *RasterTexCoord;                     /* Current raster texcoord*/
 314    GLfloat RasterMultiTexCoord[MAX_TEXTURE_UNITS][4];
 315    GLfloat RasterFogCoord;
 316    GLboolean RasterPosValid;                    /* Raster po valid flag */
 317 };
 318
 319
 320 struct gl_depthbuffer_attrib {
 321    GLenum Func;                 /* Function for depth buffer compare */
 322    GLfloat Clear;               /* Value to clear depth buffer to */
 323    GLboolean Test;              /* Depth buffering enabled flag */
 324    GLboolean Mask;              /* Depth buffer writable? */
 325    GLboolean OcclusionTest;     /* GL_HP_occlusion_test */
 326 };
 327
 328
 329 struct gl_enable_attrib {
 330    GLboolean AlphaTest;
 331    GLboolean AutoNormal;
 332    GLboolean Blend;
 333    GLboolean ClipPlane[MAX_CLIP_PLANES];
 334    GLboolean ColorMaterial;
 335    GLboolean Convolution1D;
 336    GLboolean Convolution2D;
 337    GLboolean Separable2D;
 338    GLboolean CullFace;
 339    GLboolean DepthTest;
 340    GLboolean Dither;
 341    GLboolean Fog;
 342    GLboolean Histogram;
 343    GLboolean Light[MAX_LIGHTS];
 344    GLboolean Lighting;
 345    GLboolean LineSmooth;
 346    GLboolean LineStipple;
 347    GLboolean IndexLogicOp;
 348    GLboolean ColorLogicOp;
 349    GLboolean Map1Color4;
 350    GLboolean Map1Index;
 351    GLboolean Map1Normal;
 352    GLboolean Map1TextureCoord1;
 353    GLboolean Map1TextureCoord2;
 354    GLboolean Map1TextureCoord3;
 355    GLboolean Map1TextureCoord4;
 356    GLboolean Map1Vertex3;
 357    GLboolean Map1Vertex4;
 358    GLboolean Map2Color4;
 359    GLboolean Map2Index;
 360    GLboolean Map2Normal;
 361    GLboolean Map2TextureCoord1;
 362    GLboolean Map2TextureCoord2;
 363    GLboolean Map2TextureCoord3;
 364    GLboolean Map2TextureCoord4;
 365    GLboolean Map2Vertex3;
 366    GLboolean Map2Vertex4;
 367    GLboolean MinMax;
 368    GLboolean Normalize;
 369    GLboolean PixelTexture;
 370    GLboolean PointSmooth;
 371    GLboolean PolygonOffsetPoint;
 372    GLboolean PolygonOffsetLine;
 373    GLboolean PolygonOffsetFill;
 374    GLboolean PolygonSmooth;
 375    GLboolean PolygonStipple;
 376    GLboolean RescaleNormals;
 377    GLboolean Scissor;
 378    GLboolean Stencil;
 379    GLboolean MultisampleEnabled;     /* GL_ARB_multisample */
 380    GLboolean SampleAlphaToCoverage;  /* GL_ARB_multisample */
 381    GLboolean SampleAlphaToOne;       /* GL_ARB_multisample */
 382    GLboolean SampleCoverage;         /* GL_ARB_multisample */
 383    GLboolean SampleCoverageInvert;   /* GL_ARB_multisample */
 384    GLuint Texture[MAX_TEXTURE_UNITS];
 385    GLuint TexGen[MAX_TEXTURE_UNITS];
 386 };
 387
 388
 389 struct gl_eval_attrib {
 390    /* Enable bits */
 391    GLboolean Map1Color4;
 392    GLboolean Map1Index;
 393    GLboolean Map1Normal;
 394    GLboolean Map1TextureCoord1;
 395    GLboolean Map1TextureCoord2;
 396    GLboolean Map1TextureCoord3;
 397    GLboolean Map1TextureCoord4;
 398    GLboolean Map1Vertex3;
 399    GLboolean Map1Vertex4;
 400    GLboolean Map2Color4;
 401    GLboolean Map2Index;
 402    GLboolean Map2Normal;
 403    GLboolean Map2TextureCoord1;
 404    GLboolean Map2TextureCoord2;
 405    GLboolean Map2TextureCoord3;
 406    GLboolean Map2TextureCoord4;
 407    GLboolean Map2Vertex3;
 408    GLboolean Map2Vertex4;
 409    GLboolean AutoNormal;
 410    /* Map Grid endpoints and divisions and calculated du values */
 411    GLint MapGrid1un;
 412    GLfloat MapGrid1u1, MapGrid1u2, MapGrid1du;
 413    GLint MapGrid2un, MapGrid2vn;
 414    GLfloat MapGrid2u1, MapGrid2u2, MapGrid2du;
 415    GLfloat MapGrid2v1, MapGrid2v2, MapGrid2dv;
 416 };
 417
 418
 419 struct gl_fog_attrib {
 420    GLboolean Enabled;           /* Fog enabled flag */
 421    GLfloat Color[4];            /* Fog color */
 422    GLfloat Density;             /* Density >= 0.0 */
 423    GLfloat Start;               /* Start distance in eye coords */
 424    GLfloat End;                 /* End distance in eye coords */
 425    GLfloat Index;               /* Fog index */
 426    GLenum Mode;                 /* Fog mode */
 427    GLboolean ColorSumEnabled;
 428    GLenum FogCoordinateSource;  /* GL_EXT_fog_coord */
 429 };
 430
 431
 432 struct gl_hint_attrib {
 433    /* always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE */
 434    GLenum PerspectiveCorrection;
 435    GLenum PointSmooth;
 436    GLenum LineSmooth;
 437    GLenum PolygonSmooth;
 438    GLenum Fog;
 439    GLenum ClipVolumeClipping;   /* GL_EXT_clip_volume_hint */
 440    GLenum TextureCompression;   /* GL_ARB_texture_compression */
 441    GLenum GenerateMipmap;       /* GL_SGIS_generate_mipmap */
 442 };
 443
 444
 445 struct gl_histogram_attrib {
 446    GLuint Width;                                /* number of table entries */
 447    GLint Format;                                /* GL_ALPHA, GL_RGB, etc */
 448    GLuint Count[HISTOGRAM_TABLE_SIZE][4];       /* the histogram */
 449    GLboolean Sink;                              /* terminate image transfer? */
 450    GLubyte RedSize;                             /* Bits per counter */
 451    GLubyte GreenSize;
 452    GLubyte BlueSize;
 453    GLubyte AlphaSize;
 454    GLubyte LuminanceSize;
 455 };
 456
 457
 458 struct gl_minmax_attrib {
 459    GLenum Format;
 460    GLboolean Sink;
 461    GLfloat Min[4], Max[4];   /* RGBA */
 462 };
 463
 464
 465 struct gl_convolution_attrib {
 466    GLenum Format;
 467    GLenum InternalFormat;
 468    GLuint Width;
 469    GLuint Height;
 470    GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
 471 };
 472
 473
 474 struct gl_light_attrib {
 475    struct gl_light Light[MAX_LIGHTS];   /* Array of lights */
 476    struct gl_lightmodel Model;          /* Lighting model */
 477
 478    /* Must flush FLUSH_VERTICES before referencing:
 479     */
 480    struct gl_material Material[2];      /* Material 0=front, 1=back */
 481
 482    GLboolean Enabled;                   /* Lighting enabled flag */
 483    GLenum ShadeModel;                   /* GL_FLAT or GL_SMOOTH */
 484    GLenum ColorMaterialFace;            /* GL_FRONT, BACK or FRONT_AND_BACK */
 485    GLenum ColorMaterialMode;            /* GL_AMBIENT, GL_DIFFUSE, etc */
 486    GLuint ColorMaterialBitmask;         /* bitmask formed from Face and Mode */
 487    GLboolean ColorMaterialEnabled;
 488
 489    struct gl_light EnabledList;         /* List sentinel */
 490
 491    /* Derived for optimizations: */
 492    GLboolean _NeedVertices;             /* Use fast shader? */
 493    GLuint  _Flags;                      /* LIGHT_* flags, see below */
 494    GLfloat _BaseColor[2][3];
 495    GLfloat _BaseAlpha[2];
 496 };
 497
 498
 499 #define LIGHT_SPOT         0x1
 500 #define LIGHT_LOCAL_VIEWER 0x2
 501 #define LIGHT_POSITIONAL   0x4
 502
 503 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 504
 505 struct gl_line_attrib {
 506    GLboolean SmoothFlag;        /* GL_LINE_SMOOTH enabled? */
 507    GLboolean StippleFlag;       /* GL_LINE_STIPPLE enabled? */
 508    GLushort StipplePattern;     /* Stipple pattern */
 509    GLint StippleFactor;         /* Stipple repeat factor */
 510    GLfloat Width;               /* Line width */
 511    GLfloat _Width;              /* Clamped Line width */
 512 };
 513
 514
 515 struct gl_list_attrib {
 516    GLuint ListBase;
 517 };
 518
 519 struct gl_list_opcode {
 520    GLuint size;
 521    void (*execute)( GLcontext *ctx, void *data );
 522    void (*destroy)( GLcontext *ctx, void *data );
 523    void (*print)( GLcontext *ctx, void *data );
 524 };
 525
 526 #define GL_MAX_EXT_OPCODES 16
 527
 528 struct gl_list_extensions {
 529    struct gl_list_opcode opcode[GL_MAX_EXT_OPCODES];
 530    GLuint nr_opcodes;
 531 };
 532
 533
 534 struct gl_multisample_attrib {
 535    GLboolean Enabled;
 536    GLboolean SampleAlphaToCoverage;
 537    GLboolean SampleAlphaToOne;
 538    GLboolean SampleCoverage;
 539    GLfloat SampleCoverageValue;
 540    GLboolean SampleCoverageInvert;
 541 };
 542
 543
 544 struct gl_pixel_attrib {
 545    GLenum ReadBuffer;           /* src buffer for glRead/CopyPixels */
 546    GLenum DriverReadBuffer;     /* Driver's current source buffer */
 547    GLfloat RedBias, RedScale;
 548    GLfloat GreenBias, GreenScale;
 549    GLfloat BlueBias, BlueScale;
 550    GLfloat AlphaBias, AlphaScale;
 551    GLfloat DepthBias, DepthScale;
 552    GLint IndexShift, IndexOffset;
 553    GLboolean MapColorFlag;
 554    GLboolean MapStencilFlag;
 555    GLfloat ZoomX, ZoomY;
 556    GLint MapStoSsize;           /* Size of each pixel map */
 557    GLint MapItoIsize;
 558    GLint MapItoRsize;
 559    GLint MapItoGsize;
 560    GLint MapItoBsize;
 561    GLint MapItoAsize;
 562    GLint MapRtoRsize;
 563    GLint MapGtoGsize;
 564    GLint MapBtoBsize;
 565    GLint MapAtoAsize;
 566    GLint MapStoS[MAX_PIXEL_MAP_TABLE];  /* Pixel map tables */
 567    GLint MapItoI[MAX_PIXEL_MAP_TABLE];
 568    GLfloat MapItoR[MAX_PIXEL_MAP_TABLE];
 569    GLfloat MapItoG[MAX_PIXEL_MAP_TABLE];
 570    GLfloat MapItoB[MAX_PIXEL_MAP_TABLE];
 571    GLfloat MapItoA[MAX_PIXEL_MAP_TABLE];
 572    GLubyte MapItoR8[MAX_PIXEL_MAP_TABLE];  /* converted to 8-bit color */
 573    GLubyte MapItoG8[MAX_PIXEL_MAP_TABLE];
 574    GLubyte MapItoB8[MAX_PIXEL_MAP_TABLE];
 575    GLubyte MapItoA8[MAX_PIXEL_MAP_TABLE];
 576    GLfloat MapRtoR[MAX_PIXEL_MAP_TABLE];
 577    GLfloat MapGtoG[MAX_PIXEL_MAP_TABLE];
 578    GLfloat MapBtoB[MAX_PIXEL_MAP_TABLE];
 579    GLfloat MapAtoA[MAX_PIXEL_MAP_TABLE];
 580    /* GL_EXT_histogram */
 581    GLboolean HistogramEnabled;
 582    GLboolean MinMaxEnabled;
 583    /* GL_SGIS_pixel_texture */
 584    GLboolean PixelTextureEnabled;
 585    GLenum FragmentRgbSource;
 586    GLenum FragmentAlphaSource;
 587    /* GL_SGI_color_matrix */
 588    GLfloat PostColorMatrixScale[4];  /* RGBA */
 589    GLfloat PostColorMatrixBias[4];   /* RGBA */
 590    /* GL_SGI_color_table */
 591    GLfloat ColorTableScale[4];
 592    GLfloat ColorTableBias[4];
 593    GLboolean ColorTableEnabled;
 594    GLfloat PCCTscale[4];
 595    GLfloat PCCTbias[4];
 596    GLboolean PostConvolutionColorTableEnabled;
 597    GLfloat PCMCTscale[4];
 598    GLfloat PCMCTbias[4];
 599    GLboolean PostColorMatrixColorTableEnabled;
 600    /* Convolution */
 601    GLboolean Convolution1DEnabled;
 602    GLboolean Convolution2DEnabled;
 603    GLboolean Separable2DEnabled;
 604    GLfloat ConvolutionBorderColor[3][4];
 605    GLenum ConvolutionBorderMode[3];
 606    GLfloat ConvolutionFilterScale[3][4];
 607    GLfloat ConvolutionFilterBias[3][4];
 608    GLfloat PostConvolutionScale[4];  /* RGBA */
 609    GLfloat PostConvolutionBias[4];   /* RGBA */
 610 };
 611
 612
 613 struct gl_point_attrib {
 614    GLboolean SmoothFlag;        /* True if GL_POINT_SMOOTH is enabled */
 615    GLboolean SpriteMode;        /* GL_MESA_sprite_point extension */
 616    GLfloat Size;                /* User-specified point size */
 617    GLfloat _Size;               /* Size clamped to Const.Min/MaxPointSize */
 618    GLfloat Params[3];           /* GL_EXT_point_parameters */
 619    GLfloat MinSize, MaxSize;    /* GL_EXT_point_parameters */
 620    GLfloat Threshold;           /* GL_EXT_point_parameters */
 621    GLboolean _Attenuated;       /* True if Params != [1, 0, 0] */
 622 };
 623
 624
 625 struct gl_polygon_attrib {
 626    GLenum FrontFace;            /* Either GL_CW or GL_CCW */
 627    GLenum FrontMode;            /* Either GL_POINT, GL_LINE or GL_FILL */
 628    GLenum BackMode;             /* Either GL_POINT, GL_LINE or GL_FILL */
 629    GLboolean _FrontBit;         /*  */
 630    GLboolean CullFlag;          /* Culling on/off flag */
 631    GLboolean SmoothFlag;        /* True if GL_POLYGON_SMOOTH is enabled */
 632    GLboolean StippleFlag;       /* True if GL_POLYGON_STIPPLE is enabled */
 633    GLenum CullFaceMode;         /* Culling mode GL_FRONT or GL_BACK */
 634    GLfloat OffsetFactor;        /* Polygon offset factor, from user */
 635    GLfloat OffsetUnits;         /* Polygon offset units, from user */
 636    GLfloat OffsetMRD;           /* = OffsetUnits * visual->MRD */
 637    GLboolean OffsetPoint;       /* Offset in GL_POINT mode */
 638    GLboolean OffsetLine;        /* Offset in GL_LINE mode */
 639    GLboolean OffsetFill;        /* Offset in GL_FILL mode */
 640    GLboolean _OffsetAny;
 641 };
 642
 643
 644 struct gl_scissor_attrib {
 645    GLboolean Enabled;           /* Scissor test enabled? */
 646    GLint X, Y;                  /* Lower left corner of box */
 647    GLsizei Width, Height;       /* Size of box */
 648 };
 649
 650
 651 struct gl_stencil_attrib {
 652    GLboolean Enabled;           /* Enabled flag */
 653    GLenum Function;             /* Stencil function */
 654    GLenum FailFunc;             /* Fail function */
 655    GLenum ZPassFunc;            /* Depth buffer pass function */
 656    GLenum ZFailFunc;            /* Depth buffer fail function */
 657    GLstencil Ref;               /* Reference value */
 658    GLstencil ValueMask;         /* Value mask */
 659    GLstencil Clear;             /* Clear value */
 660    GLstencil WriteMask;         /* Write mask */
 661 };
 662
 663
 664 /* TexGenEnabled flags */
 665 #define S_BIT 1
 666 #define T_BIT 2
 667 #define R_BIT 4
 668 #define Q_BIT 8
 669
 670 /* Texture Enabled flags */
 671 #define TEXTURE0_1D   0x1     /* Texture unit 0 (default) */
 672 #define TEXTURE0_2D   0x2
 673 #define TEXTURE0_3D   0x4
 674 #define TEXTURE0_CUBE 0x8
 675 #define TEXTURE0_ANY  (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D | TEXTURE0_CUBE)
 676 #define TEXTURE1_1D   (TEXTURE0_1D << 4)    /* Texture unit 1 */
 677 #define TEXTURE1_2D   (TEXTURE0_2D << 4)
 678 #define TEXTURE1_3D   (TEXTURE0_3D << 4)
 679 #define TEXTURE1_CUBE (TEXTURE0_CUBE << 4)
 680 #define TEXTURE1_ANY  (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D | TEXTURE1_CUBE)
 681 #define TEXTURE2_1D   (TEXTURE0_1D << 8)    /* Texture unit 2 */
 682 #define TEXTURE2_2D   (TEXTURE0_2D << 8)
 683 #define TEXTURE2_3D   (TEXTURE0_3D << 8)
 684 #define TEXTURE2_CUBE (TEXTURE0_CUBE << 8)
 685 #define TEXTURE2_ANY  (TEXTURE2_1D | TEXTURE2_2D | TEXTURE2_3D | TEXTURE2_CUBE)
 686 #define TEXTURE3_1D   (TEXTURE0_1D << 12)    /* Texture unit 3 */
 687 #define TEXTURE3_2D   (TEXTURE0_2D << 12)
 688 #define TEXTURE3_3D   (TEXTURE0_3D << 12)
 689 #define TEXTURE3_CUBE (TEXTURE0_CUBE << 12)
 690 #define TEXTURE3_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 691 #define TEXTURE4_1D   (TEXTURE0_1D << 16)    /* Texture unit 4 */
 692 #define TEXTURE4_2D   (TEXTURE0_2D << 16)
 693 #define TEXTURE4_3D   (TEXTURE0_3D << 16)
 694 #define TEXTURE4_CUBE (TEXTURE0_CUBE << 16)
 695 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 696 #define TEXTURE5_1D   (TEXTURE0_1D << 20)    /* Texture unit 5 */
 697 #define TEXTURE5_2D   (TEXTURE0_2D << 20)
 698 #define TEXTURE5_3D   (TEXTURE0_3D << 20)
 699 #define TEXTURE5_CUBE (TEXTURE0_CUBE << 20)
 700 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 701 #define TEXTURE6_1D   (TEXTURE0_1D << 24)    /* Texture unit 6 */
 702 #define TEXTURE6_2D   (TEXTURE0_2D << 24)
 703 #define TEXTURE6_3D   (TEXTURE0_3D << 24)
 704 #define TEXTURE6_CUBE (TEXTURE0_CUBE << 24)
 705 #define TEXTURE6_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 706 #define TEXTURE7_1D   (TEXTURE0_1D << 28)    /* Texture unit 7 */
 707 #define TEXTURE7_2D   (TEXTURE0_2D << 28)
 708 #define TEXTURE7_3D   (TEXTURE0_3D << 28)
 709 #define TEXTURE7_CUBE (TEXTURE0_CUBE << 28)
 710 #define TEXTURE7_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 711
 712 /* Bitmap versions of the GL_ constants.
 713  */
 714 #define TEXGEN_SPHERE_MAP        0x1
 715 #define TEXGEN_OBJ_LINEAR        0x2
 716 #define TEXGEN_EYE_LINEAR        0x4
 717 #define TEXGEN_REFLECTION_MAP_NV 0x8
 718 #define TEXGEN_NORMAL_MAP_NV     0x10
 719
 720 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
 721                                   TEXGEN_REFLECTION_MAP_NV | \
 722                                   TEXGEN_NORMAL_MAP_NV)
 723 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
 724                                   TEXGEN_REFLECTION_MAP_NV | \
 725                                   TEXGEN_NORMAL_MAP_NV     | \
 726                                   TEXGEN_EYE_LINEAR)
 727
 728
 729
 730 /* A selection of state flags to make driver and module's lives easier.
 731  */
 732 #define ENABLE_TEXGEN0        0x1
 733 #define ENABLE_TEXGEN1        0x2
 734 #define ENABLE_TEXGEN2        0x4
 735 #define ENABLE_TEXGEN3        0x8
 736 #define ENABLE_TEXGEN4        0x10
 737 #define ENABLE_TEXGEN5        0x20
 738 #define ENABLE_TEXGEN6        0x40
 739 #define ENABLE_TEXGEN7        0x80
 740
 741 #define ENABLE_TEXMAT0        0x1       /* Ie. not the identity matrix */
 742 #define ENABLE_TEXMAT1        0x2
 743 #define ENABLE_TEXMAT2        0x4
 744 #define ENABLE_TEXMAT3        0x8
 745 #define ENABLE_TEXMAT4        0x10
 746 #define ENABLE_TEXMAT5        0x20
 747 #define ENABLE_TEXMAT6        0x40
 748 #define ENABLE_TEXMAT7        0x80
 749
 750 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
 751 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
 752
 753 /*
 754  * If teximage is color-index, texelOut returns GLchan[1].
 755  * If teximage is depth, texelOut returns GLfloat[1].
 756  * Otherwise, texelOut returns GLchan[4].
 757  */
 758 typedef void (*FetchTexelFunc)( const struct gl_texture_image *texImage,
 759                                 GLint col, GLint row, GLint img,
 760                                 GLvoid *texelOut );
 761
 762 /* Texture format record */
 763 struct gl_texture_format {
 764    GLint MesaFormat;            /* One of the MESA_FORMAT_* values */
 765
 766    GLenum BaseFormat;           /* Either GL_ALPHA, GL_INTENSITY, GL_LUMINANCE,
 767                                  * GL_LUMINANCE_ALPHA, GL_RGB, GL_RGBA,
 768                                  * GL_COLOR_INDEX or GL_DEPTH_COMPONENT.
 769                                  */
 770    GLenum Type;                 /* Internal type as GL enum value */
 771
 772    GLubyte RedBits;             /* Bits per texel component */
 773    GLubyte GreenBits;
 774    GLubyte BlueBits;
 775    GLubyte AlphaBits;
 776    GLubyte LuminanceBits;
 777    GLubyte IntensityBits;
 778    GLubyte IndexBits;
 779    GLubyte DepthBits;
 780
 781    GLint TexelBytes;
 782
 783    FetchTexelFunc FetchTexel1D; /* Texel fetch function pointers */
 784    FetchTexelFunc FetchTexel2D;
 785    FetchTexelFunc FetchTexel3D;
 786 };
 787
 788 /* Texture image record */
 789 struct gl_texture_image {
 790    GLenum Format;               /* GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA,
 791                                  * GL_INTENSITY, GL_RGB, GL_RGBA,
 792                                  * GL_COLOR_INDEX or GL_DEPTH_COMPONENT only.
 793                                  */
 794    GLint IntFormat;             /* Internal format as given by the user */
 795    GLuint Border;               /* 0 or 1 */
 796    GLuint Width;                /* = 2^WidthLog2 + 2*Border */
 797    GLuint Height;               /* = 2^HeightLog2 + 2*Border */
 798    GLuint Depth;                /* = 2^DepthLog2 + 2*Border */
 799    GLuint Width2;               /* = Width - 2*Border */
 800    GLuint Height2;              /* = Height - 2*Border */
 801    GLuint Depth2;               /* = Depth - 2*Border */
 802    GLuint WidthLog2;            /* = log2(Width2) */
 803    GLuint HeightLog2;           /* = log2(Height2) */
 804    GLuint DepthLog2;            /* = log2(Depth2) */
 805    GLuint MaxLog2;              /* = MAX(WidthLog2, HeightLog2) */
 806    GLvoid *Data;                /* Image data, accessed via FetchTexel() */
 807
 808    const struct gl_texture_format *TexFormat;
 809
 810    FetchTexelFunc FetchTexel;   /* Texel fetch function pointer */
 811
 812    GLboolean IsCompressed;      /* GL_ARB_texture_compression */
 813    GLuint CompressedSize;       /* GL_ARB_texture_compression */
 814
 815    /* For device driver: */
 816    void *DriverData;            /* Arbitrary device driver data */
 817 };
 818
 819
 820 /* Texture object record */
 821 struct gl_texture_object {
 822    _glthread_Mutex Mutex;       /* for thread safety */
 823    GLint RefCount;              /* reference count */
 824    GLuint Name;                 /* an unsigned integer */
 825    GLuint Dimensions;           /* 1 or 2 or 3 or 6 (cube map) */
 826    GLfloat Priority;            /* in [0,1] */
 827    GLchan BorderColor[4];
 828    GLenum WrapS;                /* Wrap modes are: GL_CLAMP, REPEAT */
 829    GLenum WrapT;                /*   GL_CLAMP_TO_EDGE, and          */
 830    GLenum WrapR;                /*   GL_CLAMP_TO_BORDER_ARB         */
 831    GLenum MinFilter;            /* minification filter */
 832    GLenum MagFilter;            /* magnification filter */
 833    GLfloat MinLod;              /* min lambda, OpenGL 1.2 */
 834    GLfloat MaxLod;              /* max lambda, OpenGL 1.2 */
 835    GLint BaseLevel;             /* min mipmap level, OpenGL 1.2 */
 836    GLint MaxLevel;              /* max mipmap level, OpenGL 1.2 */
 837    GLfloat MaxAnisotropy;       /* GL_EXT_texture_filter_anisotropic */
 838    GLboolean CompareFlag;       /* GL_SGIX_shadow */
 839    GLenum CompareOperator;      /* GL_SGIX_shadow */
 840    GLchan ShadowAmbient;        /* GL_SGIX_shadow_ambient */
 841    GLint _MaxLevel;             /* actual max mipmap level (q in the spec) */
 842    GLfloat _MaxLambda;          /* = _MaxLevel - BaseLevel (q - b in spec) */
 843    GLboolean GenerateMipmap;    /* GL_SGIS_generate_mipmap */
 844
 845    struct gl_texture_image *Image[MAX_TEXTURE_LEVELS];
 846
 847    /* Texture cube faces */
 848    /* Image[] is alias for *PosX[MAX_TEXTURE_LEVELS]; */
 849    struct gl_texture_image *NegX[MAX_TEXTURE_LEVELS];
 850    struct gl_texture_image *PosY[MAX_TEXTURE_LEVELS];
 851    struct gl_texture_image *NegY[MAX_TEXTURE_LEVELS];
 852    struct gl_texture_image *PosZ[MAX_TEXTURE_LEVELS];
 853    struct gl_texture_image *NegZ[MAX_TEXTURE_LEVELS];
 854
 855    /* GL_EXT_paletted_texture */
 856    struct gl_color_table Palette;
 857
 858    GLboolean Complete;                  /* Is texture object complete? */
 859    struct gl_texture_object *Next;      /* Next in linked list */
 860
 861    /* For device driver: */
 862    void *DriverData;    /* Arbitrary device driver data */
 863 };
 864
 865
 866
 867 /*
 868  * Texture units are new with the multitexture extension.
 869  */
 870 struct gl_texture_unit {
 871    GLuint Enabled;              /* bitmask of TEXTURE0_1D, _2D, _3D, _CUBE */
 872    GLuint _ReallyEnabled;       /* 0 or one of TEXTURE0_1D, _2D, _3D, _CUBE */
 873
 874    GLenum EnvMode;              /* GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
 875    GLfloat EnvColor[4];
 876    GLuint TexGenEnabled;        /* Bitwise-OR of [STRQ]_BIT values */
 877    GLenum GenModeS;             /* Tex coord generation mode, either */
 878    GLenum GenModeT;             /*      GL_OBJECT_LINEAR, or */
 879    GLenum GenModeR;             /*      GL_EYE_LINEAR, or    */
 880    GLenum GenModeQ;             /*      GL_SPHERE_MAP        */
 881    GLuint _GenBitS;
 882    GLuint _GenBitT;
 883    GLuint _GenBitR;
 884    GLuint _GenBitQ;
 885    GLuint _GenFlags;            /* bitwise or of GenBit[STRQ] */
 886    GLfloat ObjectPlaneS[4];
 887    GLfloat ObjectPlaneT[4];
 888    GLfloat ObjectPlaneR[4];
 889    GLfloat ObjectPlaneQ[4];
 890    GLfloat EyePlaneS[4];
 891    GLfloat EyePlaneT[4];
 892    GLfloat EyePlaneR[4];
 893    GLfloat EyePlaneQ[4];
 894    GLfloat LodBias;             /* for biasing mipmap levels */
 895
 896    /* GL_EXT_texture_env_combine */
 897    GLenum CombineModeRGB;       /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 898    GLenum CombineModeA;         /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 899    GLenum CombineSourceRGB[3];  /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 900    GLenum CombineSourceA[3];    /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 901    GLenum CombineOperandRGB[3]; /* SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
 902    GLenum CombineOperandA[3];   /* SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
 903    GLuint CombineScaleShiftRGB; /* 0, 1 or 2 */
 904    GLuint CombineScaleShiftA;   /* 0, 1 or 2 */
 905
 906    struct gl_texture_object *Current1D;
 907    struct gl_texture_object *Current2D;
 908    struct gl_texture_object *Current3D;
 909    struct gl_texture_object *CurrentCubeMap; /* GL_ARB_texture_cube_map */
 910
 911    struct gl_texture_object *_Current; /* Points to really enabled tex obj */
 912
 913    struct gl_texture_object Saved1D;  /* only used by glPush/PopAttrib */
 914    struct gl_texture_object Saved2D;
 915    struct gl_texture_object Saved3D;
 916    struct gl_texture_object SavedCubeMap;
 917 };
 918
 919
 920 struct gl_texture_attrib {
 921    /* multitexture */
 922    GLuint CurrentUnit;            /* Active texture unit */
 923
 924    GLuint _ReallyEnabled;     /* enables for all texture units: */
 925                              /* = (Unit[0]._ReallyEnabled << 0) | */
 926                              /*   (Unit[1]._ReallyEnabled << 4) | */
 927                              /*   (Unit[2]._ReallyEnabled << 8) | etc... */
 928
 929    GLuint _GenFlags;  /* for texgen */
 930    GLuint _TexGenEnabled;
 931    GLuint _TexMatEnabled;
 932
 933    struct gl_texture_unit Unit[MAX_TEXTURE_UNITS];
 934
 935    struct gl_texture_object *Proxy1D;
 936    struct gl_texture_object *Proxy2D;
 937    struct gl_texture_object *Proxy3D;
 938    struct gl_texture_object *ProxyCubeMap;
 939
 940    /* GL_EXT_shared_texture_palette */
 941    GLboolean SharedPalette;
 942    struct gl_color_table Palette;
 943 };
 944
 945
 946 struct gl_transform_attrib {
 947    GLenum MatrixMode;                           /* Matrix mode */
 948    GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];
 949    GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];  /* derived */
 950    GLboolean ClipEnabled[MAX_CLIP_PLANES];
 951    GLubyte   _AnyClip;                          /* How many ClipEnabled? */
 952    GLboolean Normalize;                         /* Normalize all normals? */
 953    GLboolean RescaleNormals;                    /* GL_EXT_rescale_normal */
 954 };
 955
 956
 957 struct gl_viewport_attrib {
 958    GLint X, Y;                  /* position */
 959    GLsizei Width, Height;       /* size */
 960    GLfloat Near, Far;           /* Depth buffer range */
 961    GLmatrix _WindowMap;         /* Mapping transformation as a matrix. */
 962 };
 963
 964
 965 /* For the attribute stack: */
 966 struct gl_attrib_node {
 967    GLbitfield kind;
 968    void *data;
 969    struct gl_attrib_node *next;
 970 };
 971
 972
 973 /*
 974  * Client pixel packing/unpacking attributes
 975  */
 976 struct gl_pixelstore_attrib {
 977    GLint Alignment;
 978    GLint RowLength;
 979    GLint SkipPixels;
 980    GLint SkipRows;
 981    GLint ImageHeight;     /* for GL_EXT_texture3D */
 982    GLint SkipImages;      /* for GL_EXT_texture3D */
 983    GLboolean SwapBytes;
 984    GLboolean LsbFirst;
 985 };
 986
 987
 988 #define CA_CLIENT_DATA     0x1  /* Data not alloced by mesa */
 989
 990
 991 /*
 992  * Client vertex array attributes
 993  */
 994 struct gl_client_array {
 995    GLint Size;
 996    GLenum Type;
 997    GLsizei Stride;              /* user-specified stride */
 998    GLsizei StrideB;             /* actual stride in bytes */
 999    void *Ptr;
1000    GLuint Flags;
1001    GLboolean Enabled;
1002 };
1003
1004
1005 struct gl_array_attrib {
1006    struct gl_client_array Vertex;            /* client data descriptors */
1007    struct gl_client_array Normal;
1008    struct gl_client_array Color;
1009    struct gl_client_array SecondaryColor;
1010    struct gl_client_array FogCoord;
1011    struct gl_client_array Index;
1012    struct gl_client_array TexCoord[MAX_TEXTURE_UNITS];
1013    struct gl_client_array EdgeFlag;
1014
1015    GLint TexCoordInterleaveFactor;
1016    GLint ActiveTexture;         /* Client Active Texture */
1017    GLuint LockFirst;
1018    GLuint LockCount;
1019
1020    GLuint _Enabled;             /* _NEW_ARRAY_* - bit set if array enabled */
1021    GLuint NewState;             /* _NEW_ARRAY_* */
1022 };
1023
1024
1025 struct gl_feedback {
1026    GLenum Type;
1027    GLuint _Mask;                /* FB_* bits */
1028    GLfloat *Buffer;
1029    GLuint BufferSize;
1030    GLuint Count;
1031 };
1032
1033
1034 struct gl_selection {
1035    GLuint *Buffer;
1036    GLuint BufferSize;   /* size of SelectBuffer */
1037    GLuint BufferCount;  /* number of values in SelectBuffer */
1038    GLuint Hits;         /* number of records in SelectBuffer */
1039    GLuint NameStackDepth;
1040    GLuint NameStack[MAX_NAME_STACK_DEPTH];
1041    GLboolean HitFlag;
1042    GLfloat HitMinZ, HitMaxZ;
1043 };
1044
1045
1046 /*
1047  * 1-D Evaluator control points
1048  */
1049 struct gl_1d_map {
1050    GLuint Order;        /* Number of control points */
1051    GLfloat u1, u2, du;  /* u1, u2, 1.0/(u2-u1) */
1052    GLfloat *Points;     /* Points to contiguous control points */
1053 };
1054
1055
1056 /*
1057  * 2-D Evaluator control points
1058  */
1059 struct gl_2d_map {
1060    GLuint Uorder;               /* Number of control points in U dimension */
1061    GLuint Vorder;               /* Number of control points in V dimension */
1062    GLfloat u1, u2, du;
1063    GLfloat v1, v2, dv;
1064    GLfloat *Points;             /* Points to contiguous control points */
1065 };
1066
1067
1068 /*
1069  * All evalutator control points
1070  */
1071 struct gl_evaluators {
1072    /* 1-D maps */
1073    struct gl_1d_map Map1Vertex3;
1074    struct gl_1d_map Map1Vertex4;
1075    struct gl_1d_map Map1Index;
1076    struct gl_1d_map Map1Color4;
1077    struct gl_1d_map Map1Normal;
1078    struct gl_1d_map Map1Texture1;
1079    struct gl_1d_map Map1Texture2;
1080    struct gl_1d_map Map1Texture3;
1081    struct gl_1d_map Map1Texture4;
1082
1083    /* 2-D maps */
1084    struct gl_2d_map Map2Vertex3;
1085    struct gl_2d_map Map2Vertex4;
1086    struct gl_2d_map Map2Index;
1087    struct gl_2d_map Map2Color4;
1088    struct gl_2d_map Map2Normal;
1089    struct gl_2d_map Map2Texture1;
1090    struct gl_2d_map Map2Texture2;
1091    struct gl_2d_map Map2Texture3;
1092    struct gl_2d_map Map2Texture4;
1093 };
1094
1095
1096 /*
1097  * State which can be shared by multiple contexts:
1098  */
1099 struct gl_shared_state {
1100    _glthread_Mutex Mutex;                  /* for thread safety */
1101    GLint RefCount;                         /* Reference count */
1102    struct _mesa_HashTable *DisplayList;    /* Display lists hash table */
1103    struct _mesa_HashTable *TexObjects;     /* Texture objects hash table */
1104    struct gl_texture_object *TexObjectList;/* Linked list of texture objects */
1105
1106    /* Default texture objects (shared by all multi-texture units) */
1107    struct gl_texture_object *Default1D;
1108    struct gl_texture_object *Default2D;
1109    struct gl_texture_object *Default3D;
1110    struct gl_texture_object *DefaultCubeMap;
1111
1112    void *DriverData;  /* Device driver shared state */
1113 };
1114
1115
1116 /*
1117  * A "frame buffer" is a color buffer and its optional ancillary buffers:
1118  * depth, accum, stencil, and software-simulated alpha buffers.
1119  * In C++ terms, think of this as a base class from which device drivers
1120  * will make derived classes.
1121  */
1122 struct gl_frame_buffer {
1123    GLvisual Visual;             /* The corresponding visual */
1124
1125    GLint Width, Height;         /* size of frame buffer in pixels */
1126
1127    GLboolean UseSoftwareDepthBuffer;
1128    GLboolean UseSoftwareAccumBuffer;
1129    GLboolean UseSoftwareStencilBuffer;
1130    GLboolean UseSoftwareAlphaBuffers;
1131
1132    /* Software depth (aka Z) buffer */
1133    GLvoid *DepthBuffer;         /* array [Width*Height] of GLushort or GLuint*/
1134
1135    /* Software stencil buffer */
1136    GLstencil *Stencil;          /* array [Width*Height] of GLstencil values */
1137
1138    /* Software accumulation buffer */
1139    GLaccum *Accum;              /* array [4*Width*Height] of GLaccum values */
1140
1141    /* Software alpha planes */
1142    GLchan *FrontLeftAlpha;      /* array [Width*Height] of GLubyte */
1143    GLchan *BackLeftAlpha;       /* array [Width*Height] of GLubyte */
1144    GLchan *FrontRightAlpha;     /* array [Width*Height] of GLubyte */
1145    GLchan *BackRightAlpha;      /* array [Width*Height] of GLubyte */
1146    GLchan *Alpha;               /* Points to current alpha buffer */
1147
1148    /* Drawing bounds: intersection of window size and scissor box */
1149    GLint _Xmin, _Ymin;  /* inclusive */
1150    GLint _Xmax, _Ymax;  /* exclusive */
1151 };
1152
1153
1154 /*
1155  * Constants which may be overriden by device driver during context creation
1156  * but are never changed after that.
1157  */
1158 struct gl_constants {
1159    GLint MaxTextureSize;
1160    GLint MaxCubeTextureSize;
1161    GLint MaxTextureLevels;
1162    GLuint MaxTextureUnits;
1163    GLfloat MaxTextureMaxAnisotropy;     /* GL_EXT_texture_filter_anisotropic */
1164    GLuint MaxArrayLockSize;
1165    GLint SubPixelBits;
1166    GLfloat MinPointSize, MaxPointSize;          /* aliased */
1167    GLfloat MinPointSizeAA, MaxPointSizeAA;      /* antialiased */
1168    GLfloat PointSizeGranularity;
1169    GLfloat MinLineWidth, MaxLineWidth;          /* aliased */
1170    GLfloat MinLineWidthAA, MaxLineWidthAA;      /* antialiased */
1171    GLfloat LineWidthGranularity;
1172    GLuint NumAuxBuffers;
1173    GLuint MaxColorTableSize;
1174    GLuint MaxConvolutionWidth;
1175    GLuint MaxConvolutionHeight;
1176    GLuint NumCompressedTextureFormats;  /* GL_ARB_texture_compression */
1177    GLenum CompressedTextureFormats[MAX_COMPRESSED_TEXTURE_FORMATS];
1178    GLuint MaxClipPlanes;
1179    GLuint MaxLights;
1180 };
1181
1182
1183 /*
1184  * List of extensions.
1185  */
1186 struct extension;
1187 struct gl_extensions {
1188    char *ext_string;
1189    struct extension *ext_list;
1190    /* Flags to quickly test if certain extensions are available.
1191     * Not every extension needs to have such a flag, but it's encouraged.
1192     */
1193    GLboolean ARB_imaging;
1194    GLboolean ARB_multisample;
1195    GLboolean ARB_multitexture;
1196    GLboolean ARB_texture_border_clamp;
1197    GLboolean ARB_texture_compression;
1198    GLboolean ARB_texture_cube_map;
1199    GLboolean ARB_texture_env_combine;
1200    GLboolean ARB_texture_env_dot3;
1201    GLboolean EXT_blend_color;
1202    GLboolean EXT_blend_func_separate;
1203    GLboolean EXT_blend_logic_op;
1204    GLboolean EXT_blend_minmax;
1205    GLboolean EXT_blend_subtract;
1206    GLboolean EXT_clip_volume_hint;
1207    GLboolean EXT_convolution;
1208    GLboolean EXT_compiled_vertex_array;
1209    GLboolean EXT_fog_coord;
1210    GLboolean EXT_histogram;
1211    GLboolean EXT_packed_pixels;
1212    GLboolean EXT_paletted_texture;
1213    GLboolean EXT_point_parameters;
1214    GLboolean EXT_polygon_offset;
1215    GLboolean EXT_rescale_normal;
1216    GLboolean EXT_secondary_color;
1217    GLboolean EXT_shared_texture_palette;
1218    GLboolean EXT_stencil_wrap;
1219    GLboolean EXT_texture3D;
1220    GLboolean EXT_texture_compression_s3tc;
1221    GLboolean EXT_texture_env_add;
1222    GLboolean EXT_texture_env_combine;
1223    GLboolean EXT_texture_env_dot3;
1224    GLboolean EXT_texture_filter_anisotropic;
1225    GLboolean EXT_texture_object;
1226    GLboolean EXT_texture_lod_bias;
1227    GLboolean EXT_vertex_array_set;
1228    GLboolean HP_occlusion_test;
1229    GLboolean INGR_blend_func_separate;
1230    GLboolean MESA_window_pos;
1231    GLboolean MESA_resize_buffers;
1232    GLboolean MESA_sprite_point;
1233    GLboolean NV_blend_square;
1234    GLboolean NV_texgen_reflection;
1235    GLboolean SGI_color_matrix;
1236    GLboolean SGI_color_table;
1237    GLboolean SGIS_generate_mipmap;
1238    GLboolean SGIS_pixel_texture;
1239    GLboolean SGIS_texture_edge_clamp;
1240    GLboolean SGIX_depth_texture;
1241    GLboolean SGIX_pixel_texture;
1242    GLboolean SGIX_shadow;
1243    GLboolean SGIX_shadow_ambient;
1244    GLboolean _3DFX_texture_compression_FXT1;
1245 };
1246
1247
1248
1249 /*
1250  * Bits for image transfer operations (ctx->ImageTransferState).
1251  */
1252 #define IMAGE_SCALE_BIAS_BIT                      0x1
1253 #define IMAGE_SHIFT_OFFSET_BIT                    0x2
1254 #define IMAGE_MAP_COLOR_BIT                       0x4
1255 #define IMAGE_COLOR_TABLE_BIT                     0x8
1256 #define IMAGE_CONVOLUTION_BIT                     0x10
1257 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS         0x20
1258 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT    0x40
1259 #define IMAGE_COLOR_MATRIX_BIT                    0x80
1260 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT   0x100
1261 #define IMAGE_HISTOGRAM_BIT                       0x200
1262 #define IMAGE_MIN_MAX_BIT                         0x400
1263
1264 /* transfer ops up to convolution: */
1265 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT |     \
1266                                     IMAGE_SHIFT_OFFSET_BIT |   \
1267                                     IMAGE_MAP_COLOR_BIT |      \
1268                                     IMAGE_COLOR_TABLE_BIT)
1269
1270 /* transfer ops after convolution: */
1271 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS |      \
1272                                      IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
1273                                      IMAGE_COLOR_MATRIX_BIT |                 \
1274                                      IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
1275                                      IMAGE_HISTOGRAM_BIT |                    \
1276                                      IMAGE_MIN_MAX_BIT)
1277
1278
1279 /*
1280  * Bits to indicate what state has changed.  6 unused flags.
1281  */
1282 #define _NEW_MODELVIEW          0x1        /* ctx->ModelView */
1283 #define _NEW_PROJECTION         0x2        /* ctx->Projection */
1284 #define _NEW_TEXTURE_MATRIX     0x4        /* ctx->TextureMatrix */
1285 #define _NEW_COLOR_MATRIX       0x8        /* ctx->ColorMatrix */
1286 #define _NEW_ACCUM              0x10       /* ctx->Accum */
1287 #define _NEW_COLOR              0x20       /* ctx->Color */
1288 #define _NEW_DEPTH              0x40       /* ctx->Depth */
1289 #define _NEW_EVAL               0x80       /* ctx->Eval, ctx->EvalMap */
1290 #define _NEW_FOG                0x100      /* ctx->Fog */
1291 #define _NEW_HINT               0x200      /* ctx->Hint */
1292 #define _NEW_LIGHT              0x400      /* ctx->Light */
1293 #define _NEW_LINE               0x800      /* ctx->Line */
1294 #define _NEW_PIXEL              0x1000     /* ctx->Pixel */
1295 #define _NEW_POINT              0x2000     /* ctx->Point */
1296 #define _NEW_POLYGON            0x4000     /* ctx->Polygon */
1297 #define _NEW_POLYGONSTIPPLE     0x8000     /* ctx->PolygonStipple */
1298 #define _NEW_SCISSOR            0x10000    /* ctx->Scissor */
1299 #define _NEW_STENCIL            0x20000    /* ctx->Stencil */
1300 #define _NEW_TEXTURE            0x40000    /* ctx->Texture */
1301 #define _NEW_TRANSFORM          0x80000    /* ctx->Transform */
1302 #define _NEW_VIEWPORT           0x100000   /* ctx->Viewport */
1303 #define _NEW_PACKUNPACK         0x200000   /* ctx->Pack, ctx->Unpack */
1304 #define _NEW_ARRAY              0x400000   /* ctx->Array */
1305 #define _NEW_RENDERMODE         0x800000   /* RenderMode, Feedback, Select */
1306 #define _NEW_BUFFERS            0x1000000  /* ctx->Visual, ctx->DrawBuffer, */
1307 #define _NEW_MULTISAMPLE        0x2000000  /* ctx->Multisample */
1308 #define _NEW_ALL ~0
1309
1310
1311
1312 /* Bits to track array state changes (also used to summarize array enabled)
1313  */
1314 #define _NEW_ARRAY_VERTEX           0x1
1315 #define _NEW_ARRAY_COLOR            0x2
1316 #define _NEW_ARRAY_NORMAL           0x4
1317 #define _NEW_ARRAY_INDEX            0x8
1318 #define _NEW_ARRAY_EDGEFLAG         0x10
1319 #define _NEW_ARRAY_SECONDARYCOLOR   0x20
1320 #define _NEW_ARRAY_FOGCOORD         0x40
1321 #define _NEW_ARRAY_TEXCOORD_0       0x80
1322 #define _NEW_ARRAY_TEXCOORD_1       0x100
1323 #define _NEW_ARRAY_TEXCOORD_2       0x200
1324 #define _NEW_ARRAY_TEXCOORD_3       0x400
1325 #define _NEW_ARRAY_TEXCOORD_4       0x800
1326 #define _NEW_ARRAY_TEXCOORD_5       0x1000
1327 #define _NEW_ARRAY_TEXCOORD_6       0x2000
1328 #define _NEW_ARRAY_TEXCOORD_7       0x4000
1329 #define _NEW_ARRAY_ALL              0x7fff
1330
1331 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
1332
1333 /* A bunch of flags that we think might be useful to drivers.
1334  */
1335 #define DD_FLATSHADE                0x1
1336 #define DD_SEPARATE_SPECULAR        0x2
1337 #define DD_TRI_CULL_FRONT_BACK      0x4 /* special case on some hw */
1338 #define DD_TRI_LIGHT_TWOSIDE        0x8
1339 #define DD_TRI_UNFILLED             0x10
1340 #define DD_TRI_SMOOTH               0x20
1341 #define DD_TRI_STIPPLE              0x40
1342 #define DD_TRI_OFFSET               0x80
1343 #define DD_LINE_SMOOTH              0x100
1344 #define DD_LINE_STIPPLE             0x200
1345 #define DD_LINE_WIDTH               0x400
1346 #define DD_POINT_SMOOTH             0x800
1347 #define DD_POINT_SIZE               0x1000
1348 #define DD_POINT_ATTEN              0x2000
1349
1350 /* Define the state changes under which each of these bits might change
1351  */
1352 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
1353 #define _DD_NEW_SEPARATE_SPECULAR        (_NEW_LIGHT | _NEW_FOG)
1354 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
1355 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
1356 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
1357 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
1358 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
1359 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
1360 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
1361 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
1362 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
1363 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
1364 #define _DD_NEW_POINT_SIZE               _NEW_POINT
1365 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
1366
1367 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT |         \
1368                                            _NEW_TEXTURE |       \
1369                                            _NEW_POINT |         \
1370                                            _NEW_MODELVIEW)
1371
1372 #define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT |         \
1373                                            _NEW_TEXTURE)
1374
1375 #define _IMAGE_NEW_TRANSFER_STATE         (_NEW_PIXEL | _NEW_COLOR_MATRIX)
1376
1377
1378 #define NEED_NORMALS_TEXGEN      0x1
1379 #define NEED_NORMALS_LIGHT       0x2
1380
1381 #define NEED_EYE_TEXGEN          0x1
1382 #define NEED_EYE_LIGHT           0x2
1383 #define NEED_EYE_LIGHT_MODELVIEW 0x4
1384 #define NEED_EYE_POINT_ATTEN     0x8
1385
1386
1387 /*
1388  * Forward declaration of display list datatypes:
1389  */
1390 union node;
1391 typedef union node Node;
1392
1393
1394 /* This has to be included here. */
1395 #include "dd.h"
1396
1397
1398 /*
1399  * Core Mesa's support for tnl modules:
1400  */
1401 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
1402
1403 struct gl_tnl_module {
1404    /* Vertex format to be lazily swapped into current dispatch.
1405     */
1406    GLvertexformat *Current;
1407
1408    /* Record of functions swapped out.  On restore, only need to swap
1409     * these functions back in.
1410     */
1411    void *Swapped[NUM_VERTEX_FORMAT_ENTRIES][2];
1412    GLuint SwapCount;
1413 };
1414
1415
1416 /*
1417  * The library context:
1418  */
1419 struct __GLcontextRec {
1420    /*
1421    ** Os related interfaces; these *must* be the first members of this
1422    ** structure, because they are exposed to the outside world (i.e. GLX
1423    ** extension).
1424    */
1425    __GLimports imports;
1426    __GLexports exports;
1427
1428    /* State possibly shared with other contexts in the address space */
1429    struct gl_shared_state *Shared;
1430
1431    /* API function pointer tables */
1432    struct _glapi_table *Save;   /* Display list save funcs */
1433    struct _glapi_table *Exec;   /* Execute funcs */
1434    struct _glapi_table *CurrentDispatch;  /* == Save or Exec !! */
1435
1436    GLboolean ExecPrefersFloat;  /* What preference for color conversion? */
1437    GLboolean SavePrefersFloat;
1438
1439    GLvisual Visual;
1440    GLframebuffer *DrawBuffer;   /* buffer for writing */
1441    GLframebuffer *ReadBuffer;   /* buffer for reading */
1442
1443    /* Driver function pointer table */
1444    struct dd_function_table Driver;
1445
1446    void *DriverCtx;     /* Points to device driver context/state */
1447    void *DriverMgrCtx;  /* Points to device driver manager (optional)*/
1448
1449    /* Core/Driver constants */
1450    struct gl_constants Const;
1451
1452    /* Modelview matrix and stack */
1453    GLmatrix ModelView;           /* current matrix, not stored on stack */
1454    GLuint ModelViewStackDepth;
1455    GLmatrix ModelViewStack[MAX_MODELVIEW_STACK_DEPTH - 1];
1456
1457    /* Projection matrix and stack */
1458    GLmatrix ProjectionMatrix;    /* current matrix, not stored on stack */
1459    GLuint ProjectionStackDepth;
1460    GLmatrix ProjectionStack[MAX_PROJECTION_STACK_DEPTH - 1];
1461
1462    /* Combined modelview and projection matrix */
1463    GLmatrix _ModelProjectMatrix;
1464
1465    /* Texture matrix and stack */
1466    GLmatrix TextureMatrix[MAX_TEXTURE_UNITS];
1467    GLuint TextureStackDepth[MAX_TEXTURE_UNITS];
1468    GLmatrix TextureStack[MAX_TEXTURE_UNITS][MAX_TEXTURE_STACK_DEPTH - 1];
1469
1470    /* Color matrix and stack */
1471    GLmatrix ColorMatrix;
1472    GLuint ColorStackDepth;
1473    GLmatrix ColorStack[MAX_COLOR_STACK_DEPTH - 1];
1474
1475    /* Display lists */
1476    GLuint CallDepth;            /* Current recursion calling depth */
1477    GLboolean ExecuteFlag;       /* Execute GL commands? */
1478    GLboolean CompileFlag;       /* Compile GL commands into display list? */
1479    Node *CurrentListPtr;        /* Head of list being compiled */
1480    GLuint CurrentListNum;       /* Number of the list being compiled */
1481    Node *CurrentBlock;          /* Pointer to current block of nodes */
1482    GLuint CurrentPos;           /* Index into current block of nodes */
1483
1484    /* Extensions */
1485    struct gl_extensions Extensions;
1486
1487    /* Renderer attribute stack */
1488    GLuint AttribStackDepth;
1489    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
1490
1491    /* Renderer attribute groups */
1492    struct gl_accum_attrib       Accum;
1493    struct gl_colorbuffer_attrib Color;
1494    struct gl_current_attrib     Current;
1495    struct gl_depthbuffer_attrib Depth;
1496    struct gl_eval_attrib        Eval;
1497    struct gl_fog_attrib         Fog;
1498    struct gl_hint_attrib        Hint;
1499    struct gl_light_attrib       Light;
1500    struct gl_line_attrib        Line;
1501    struct gl_list_attrib        List;
1502    struct gl_multisample_attrib Multisample;
1503    struct gl_pixel_attrib       Pixel;
1504    struct gl_point_attrib       Point;
1505    struct gl_polygon_attrib     Polygon;
1506    GLuint PolygonStipple[32];
1507    struct gl_scissor_attrib     Scissor;
1508    struct gl_stencil_attrib     Stencil;
1509    struct gl_texture_attrib     Texture;
1510    struct gl_transform_attrib   Transform;
1511    struct gl_viewport_attrib    Viewport;
1512
1513    /* Other attribute groups */
1514    struct gl_histogram_attrib   Histogram;
1515    struct gl_minmax_attrib      MinMax;
1516    struct gl_convolution_attrib Convolution1D;
1517    struct gl_convolution_attrib Convolution2D;
1518    struct gl_convolution_attrib Separable2D;
1519
1520    /* Client attribute stack */
1521    GLuint ClientAttribStackDepth;
1522    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
1523
1524    /* Client attribute groups */
1525    struct gl_array_attrib       Array;  /* Vertex arrays */
1526    struct gl_pixelstore_attrib  Pack;   /* Pixel packing */
1527    struct gl_pixelstore_attrib  Unpack; /* Pixel unpacking */
1528
1529    struct gl_evaluators EvalMap;   /* All evaluators */
1530    struct gl_feedback   Feedback;  /* Feedback */
1531    struct gl_selection  Select;    /* Selection */
1532
1533    struct gl_color_table ColorTable;       /* Pre-convolution */
1534    struct gl_color_table ProxyColorTable;  /* Pre-convolution */
1535    struct gl_color_table PostConvolutionColorTable;
1536    struct gl_color_table ProxyPostConvolutionColorTable;
1537    struct gl_color_table PostColorMatrixColorTable;
1538    struct gl_color_table ProxyPostColorMatrixColorTable;
1539
1540    GLenum ErrorValue;        /* Last error code */
1541    GLenum RenderMode;        /* either GL_RENDER, GL_SELECT, GL_FEEDBACK */
1542    GLuint NewState;          /* bitwise-or of _NEW_* flags */
1543
1544    /* Derived */
1545    GLuint _TriangleCaps;      /* bitwise-or of DD_* flags */
1546    GLuint _ImageTransferState;/* bitwise-or of IMAGE_*_BIT flags */
1547    GLfloat _EyeZDir[3];
1548    GLfloat _ModelViewInvScale;
1549    GLuint _NeedEyeCoords;
1550    GLuint _NeedNormals;    /* Are vertex normal vectors needed? */
1551
1552    struct gl_shine_tab *_ShineTable[2];  /* Active shine tables */
1553    struct gl_shine_tab *_ShineTabList;   /* Mru list of inactive shine tables */
1554
1555    struct gl_list_extensions listext; /* driver dlist extensions */
1556
1557
1558    GLboolean OcclusionResult;  /* GL_HP_occlusion_test */
1559    GLboolean OcclusionResultSaved;  /* GL_HP_occlusion_test */
1560
1561    /* Z buffer stuff */
1562    GLuint DepthMax;             /* Max depth buffer value */
1563    GLfloat DepthMaxF;           /* Float max depth buffer value */
1564    GLfloat MRD;                 /* minimum resolvable difference in Z values */
1565
1566    /* Should 3Dfx Glide driver catch signals? */
1567    GLboolean CatchSignals;
1568
1569    /* For debugging/development only */
1570    GLboolean NoRaster;
1571    GLboolean FirstTimeCurrent;
1572
1573    /* Dither disable via MESA_NO_DITHER env var */
1574    GLboolean NoDither;
1575
1576    GLboolean Rendering;
1577
1578 #if defined(MESA_TRACE)
1579    struct _glapi_table *TraceDispatch;
1580    trace_context_t     *TraceCtx;
1581 #else
1582    void *TraceDispatch;
1583    void *TraceCtx;
1584 #endif
1585
1586    /* Core tnl module support */
1587    struct gl_tnl_module TnlModule;
1588
1589    /* Hooks for module contexts.  These will eventually live
1590     * in the driver or elsewhere.
1591     */
1592    void *swrast_context;
1593    void *swsetup_context;
1594    void *swtnl_context;
1595    void *swtnl_im;
1596    void *acache_context;
1597    void *aelt_context;
1598 };
1599
1600
1601 /* The string names for GL_POINT, GL_LINE_LOOP, etc */
1602 extern const char *_mesa_prim_name[GL_POLYGON+4];
1603
1604
1605 #ifdef MESA_DEBUG
1606 extern int MESA_VERBOSE;
1607 extern int MESA_DEBUG_FLAGS;
1608 #else
1609 # define MESA_VERBOSE 0
1610 # define MESA_DEBUG_FLAGS 0
1611 # ifndef NDEBUG
1612 #  define NDEBUG
1613 # endif
1614 #endif
1615
1616
1617 enum _verbose {
1618    VERBOSE_VARRAY               = 0x0001,
1619    VERBOSE_TEXTURE              = 0x0002,
1620    VERBOSE_IMMEDIATE            = 0x0004,
1621    VERBOSE_PIPELINE             = 0x0008,
1622    VERBOSE_DRIVER               = 0x0010,
1623    VERBOSE_STATE                = 0x0020,
1624    VERBOSE_API                  = 0x0040,
1625    VERBOSE_DISPLAY_LIST         = 0x0200,
1626    VERBOSE_LIGHTING             = 0x0400
1627 };
1628
1629
1630 enum _debug {
1631    DEBUG_ALWAYS_FLUSH           = 0x1
1632 };
1633
1634
1635
1636 #define Elements(x) sizeof(x)/sizeof(*(x))
1637
1638
1639
1640 /* Eventually let the driver specify what statechanges require a flush:
1641  */
1642 #define FLUSH_VERTICES(ctx, newstate)                                   \
1643 do {                                                                    \
1644    if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES)                   \
1645       ctx->Driver.FlushVertices(ctx, FLUSH_STORED_VERTICES);            \
1646    ctx->NewState |= newstate;                                           \
1647 } while (0)
1648
1649 #define FLUSH_CURRENT(ctx, newstate)                                    \
1650 do {                                                                    \
1651    if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT)                    \
1652       ctx->Driver.FlushVertices(ctx, FLUSH_UPDATE_CURRENT);             \
1653    ctx->NewState |= newstate;                                           \
1654 } while (0)
1655
1656 #define ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval)               \
1657 do {                                                                    \
1658    if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {    \
1659       _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" );            \
1660       return retval;                                                    \
1661    }                                                                    \
1662 } while (0)
1663
1664 #define ASSERT_OUTSIDE_BEGIN_END(ctx)                                   \
1665 do {                                                                    \
1666    if (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END) {    \
1667       _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" );            \
1668       return;                                                           \
1669    }                                                                    \
1670 } while (0)
1671
1672 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx)                         \
1673 do {                                                                    \
1674    ASSERT_OUTSIDE_BEGIN_END(ctx);                                       \
1675    FLUSH_VERTICES(ctx, 0);                                              \
1676 } while (0)
1677
1678 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, retval)     \
1679 do {                                                                    \
1680    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval);                   \
1681    FLUSH_VERTICES(ctx, 0);                                              \
1682 } while (0)
1683
1684
1685
1686
1687 #endif /* TYPES_H */