src/mesa/main/mtypes.h

   1 /* $Id: mtypes.h,v 1.27 2001/03/18 08:53:49 gareth 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 /* This is a macro on IRIX */
  45 #ifdef _P
  46 #undef _P
  47 #endif
  48
  49
  50 /* Please try to mark derived values with a leading underscore ('_').
  51  */
  52
  53 /*
  54  * Color channel data type:
  55  */
  56 #if CHAN_BITS == 8
  57    typedef GLubyte GLchan;
  58 #define CHAN_MAX 255
  59 #define CHAN_MAXF 255.0F
  60 #define CHAN_TYPE GL_UNSIGNED_BYTE
  61 #elif CHAN_BITS == 16
  62    typedef GLushort GLchan;
  63 #define CHAN_MAX 65535
  64 #define CHAN_MAXF 65535.0F
  65 #define CHAN_TYPE GL_UNSIGNED_SHORT
  66 #elif CHAN_BITS == 32
  67    typedef GLfloat GLchan;
  68 #define CHAN_MAX 1.0
  69 #define CHAN_MAXF 1.0F
  70 #define CHAN_TYPE GL_FLOAT
  71 #else
  72 #error  illegal number of color channel bits
  73 #endif
  74
  75
  76 /*
  77  * Accumulation buffer data type:
  78  */
  79 #if ACCUM_BITS==8
  80    typedef GLbyte GLaccum;
  81 #elif ACCUM_BITS==16
  82    typedef GLshort GLaccum;
  83 #else
  84 #  error "illegal number of accumulation bits"
  85 #endif
  86
  87
  88 /*
  89  * Stencil buffer data type:
  90  */
  91 #if STENCIL_BITS==8
  92    typedef GLubyte GLstencil;
  93 #  define STENCIL_MAX 0xff
  94 #elif STENCIL_BITS==16
  95    typedef GLushort GLstencil;
  96 #  define STENCIL_MAX 0xffff
  97 #else
  98 #  error "illegal number of stencil bits"
  99 #endif
 100
 101
 102 /*
 103  * Depth buffer data type:
 104  */
 105 typedef GLuint GLdepth;  /* Must be 32-bits! */
 106
 107
 108 /*
 109  * Fixed point data type:
 110  */
 111 typedef int GLfixed;
 112
 113
 114
 115 /*
 116  * Some forward type declarations
 117  */
 118 struct _mesa_HashTable;
 119 struct gl_texture_image;
 120 struct gl_texture_object;
 121 typedef struct __GLcontextRec GLcontext;
 122 typedef struct __GLcontextModesRec GLvisual;
 123 typedef struct gl_frame_buffer GLframebuffer;
 124
 125
 126
 127 /* Maximum number of temporary vertices required for clipping.  (Used
 128  * in array_cache and tnl modules).
 129  */
 130 #define MAX_CLIPPED_VERTICES ((2 * (6 + MAX_CLIP_PLANES))+1)
 131
 132
 133 /* Data structure for color tables */
 134 struct gl_color_table {
 135    GLenum Format;         /* GL_ALPHA, GL_RGB, GL_RGB, etc */
 136    GLenum IntFormat;
 137    GLuint Size;           /* number of entries (rows) in table */
 138    GLvoid *Table;         /* either GLfloat * or GLchan * */
 139    GLboolean FloatTable;  /* are entries stored as floats? */
 140    GLubyte RedSize;
 141    GLubyte GreenSize;
 142    GLubyte BlueSize;
 143    GLubyte AlphaSize;
 144    GLubyte LuminanceSize;
 145    GLubyte IntensitySize;
 146 };
 147
 148
 149 /*
 150  * Bit flags used for updating material values.
 151  */
 152 #define FRONT_AMBIENT_BIT     0x1
 153 #define BACK_AMBIENT_BIT      0x2
 154 #define FRONT_DIFFUSE_BIT     0x4
 155 #define BACK_DIFFUSE_BIT      0x8
 156 #define FRONT_SPECULAR_BIT   0x10
 157 #define BACK_SPECULAR_BIT    0x20
 158 #define FRONT_EMISSION_BIT   0x40
 159 #define BACK_EMISSION_BIT    0x80
 160 #define FRONT_SHININESS_BIT 0x100
 161 #define BACK_SHININESS_BIT  0x200
 162 #define FRONT_INDEXES_BIT   0x400
 163 #define BACK_INDEXES_BIT    0x800
 164
 165 #define FRONT_MATERIAL_BITS     (FRONT_EMISSION_BIT | FRONT_AMBIENT_BIT | \
 166                                  FRONT_DIFFUSE_BIT | FRONT_SPECULAR_BIT | \
 167                                  FRONT_SHININESS_BIT | FRONT_INDEXES_BIT)
 168
 169 #define BACK_MATERIAL_BITS      (BACK_EMISSION_BIT | BACK_AMBIENT_BIT | \
 170                                  BACK_DIFFUSE_BIT | BACK_SPECULAR_BIT | \
 171                                  BACK_SHININESS_BIT | BACK_INDEXES_BIT)
 172
 173 #define ALL_MATERIAL_BITS       (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
 174
 175
 176
 177 /*
 178  * Specular exponent and material shininess lookup table sizes:
 179  */
 180 #define EXP_TABLE_SIZE 512
 181 #define SHINE_TABLE_SIZE 256
 182
 183 struct gl_shine_tab {
 184    struct gl_shine_tab *next, *prev;
 185    GLfloat tab[SHINE_TABLE_SIZE+1];
 186    GLfloat shininess;
 187    GLuint refcount;
 188 };
 189
 190
 191 struct gl_light {
 192    struct gl_light *next;               /* double linked list with sentinel */
 193    struct gl_light *prev;
 194
 195    GLfloat Ambient[4];          /* ambient color */
 196    GLfloat Diffuse[4];          /* diffuse color */
 197    GLfloat Specular[4];         /* specular color */
 198    GLfloat EyePosition[4];      /* position in eye coordinates */
 199    GLfloat EyeDirection[4];     /* spotlight dir in eye coordinates */
 200    GLfloat SpotExponent;
 201    GLfloat SpotCutoff;          /* in degress */
 202    GLfloat _CosCutoff;          /* = MAX(0, cos(SpotCutoff)) */
 203    GLfloat ConstantAttenuation;
 204    GLfloat LinearAttenuation;
 205    GLfloat QuadraticAttenuation;
 206    GLboolean Enabled;           /* On/off flag */
 207
 208    /* Derived fields */
 209    GLuint _Flags;               /* State */
 210
 211    GLfloat _Position[4];        /* position in eye/obj coordinates */
 212    GLfloat _VP_inf_norm[3];     /* Norm direction to infinite light */
 213    GLfloat _h_inf_norm[3];      /* Norm( _VP_inf_norm + <0,0,1> ) */
 214    GLfloat _NormDirection[4];   /* normalized spotlight direction */
 215    GLfloat _VP_inf_spot_attenuation;
 216
 217    GLfloat _SpotExpTable[EXP_TABLE_SIZE][2];  /* to replace a pow() call */
 218    GLfloat _MatAmbient[2][3];   /* material ambient * light ambient */
 219    GLfloat _MatDiffuse[2][3];   /* material diffuse * light diffuse */
 220    GLfloat _MatSpecular[2][3];  /* material spec * light specular */
 221    GLfloat _dli;                /* CI diffuse light intensity */
 222    GLfloat _sli;                /* CI specular light intensity */
 223 };
 224
 225
 226 struct gl_lightmodel {
 227    GLfloat Ambient[4];          /* ambient color */
 228    GLboolean LocalViewer;       /* Local (or infinite) view point? */
 229    GLboolean TwoSide;           /* Two (or one) sided lighting? */
 230    GLenum ColorControl;         /* either GL_SINGLE_COLOR */
 231                                 /* or GL_SEPARATE_SPECULAR_COLOR */
 232 };
 233
 234
 235 struct gl_material
 236 {
 237    GLfloat Ambient[4];
 238    GLfloat Diffuse[4];
 239    GLfloat Specular[4];
 240    GLfloat Emission[4];
 241    GLfloat Shininess;
 242    GLfloat AmbientIndex;        /* for color index lighting */
 243    GLfloat DiffuseIndex;        /* for color index lighting */
 244    GLfloat SpecularIndex;       /* for color index lighting */
 245 };
 246
 247
 248 /*
 249  * Attribute structures:
 250  *    We define a struct for each attribute group to make pushing and
 251  *    popping attributes easy.  Also it's a good organization.
 252  */
 253 struct gl_accum_attrib {
 254    GLfloat ClearColor[4];       /* Accumulation buffer clear color */
 255 };
 256
 257
 258 /*
 259  * Used in DrawDestMask below
 260  */
 261 #define FRONT_LEFT_BIT  1
 262 #define FRONT_RIGHT_BIT 2
 263 #define BACK_LEFT_BIT   4
 264 #define BACK_RIGHT_BIT  8
 265
 266
 267 struct gl_colorbuffer_attrib {
 268    GLuint ClearIndex;                   /* Index to use for glClear */
 269    GLchan ClearColor[4];                /* Color to use for glClear */
 270
 271    GLuint IndexMask;                    /* Color index write mask */
 272    GLubyte ColorMask[4];                /* Each flag is 0xff or 0x0 */
 273
 274    GLenum DrawBuffer;                   /* Which buffer to draw into */
 275    GLenum DriverDrawBuffer;             /* Current device driver dest buffer */
 276    GLboolean MultiDrawBuffer;           /* Drawing to mutliple buffers? */
 277    GLubyte DrawDestMask;                /* bitwise-OR of bitflags above */
 278
 279    /* alpha testing */
 280    GLboolean AlphaEnabled;              /* Alpha test enabled flag */
 281    GLenum AlphaFunc;                    /* Alpha test function */
 282    GLchan AlphaRef;                     /* Alpha ref value as GLchan */
 283
 284    /* blending */
 285    GLboolean BlendEnabled;              /* Blending enabled flag */
 286    GLenum BlendSrcRGB;                  /* Blending source operator */
 287    GLenum BlendDstRGB;                  /* Blending destination operator */
 288    GLenum BlendSrcA;                    /* GL_INGR_blend_func_separate */
 289    GLenum BlendDstA;                    /* GL_INGR_blend_func_separate */
 290    GLenum BlendEquation;
 291    GLfloat BlendColor[4];
 292
 293    /* logic op */
 294    GLenum LogicOp;                      /* Logic operator */
 295    GLboolean IndexLogicOpEnabled;       /* Color index logic op enabled flag */
 296    GLboolean ColorLogicOpEnabled;       /* RGBA logic op enabled flag */
 297
 298    GLboolean DitherFlag;                /* Dither enable flag */
 299 };
 300
 301
 302 struct gl_current_attrib {
 303    /* These values valid only when FLUSH_VERTICES has been called.
 304     */
 305    GLfloat Normal[3];                           /* Current vertex normal */
 306    GLchan Color[4];                             /* Current RGBA color */
 307    GLchan SecondaryColor[4];                    /* Current secondary color */
 308    GLfloat FogCoord;                            /* Current Fog coord */
 309    GLuint Index;                                /* Current color index */
 310    GLboolean EdgeFlag;                          /* Current edge flag */
 311    GLfloat Texcoord[MAX_TEXTURE_UNITS][4];      /* Current texture coords */
 312
 313    /* These values are always valid.
 314     */
 315    GLfloat RasterPos[4];                        /* Current raster position */
 316    GLfloat RasterDistance;                      /* Current raster distance */
 317    GLfloat RasterColor[4];                      /* Current raster color */
 318    GLuint  RasterIndex;                         /* Current raster index */
 319    GLfloat *RasterTexCoord;                     /* Current raster texcoord*/
 320    GLfloat RasterMultiTexCoord[MAX_TEXTURE_UNITS][4];
 321    GLboolean RasterPosValid;                    /* Raster po valid flag */
 322 };
 323
 324
 325 struct gl_depthbuffer_attrib {
 326    GLenum Func;                 /* Function for depth buffer compare */
 327    GLfloat Clear;               /* Value to clear depth buffer to */
 328    GLboolean Test;              /* Depth buffering enabled flag */
 329    GLboolean Mask;              /* Depth buffer writable? */
 330    GLboolean OcclusionTest;     /* GL_HP_occlusion_test */
 331 };
 332
 333
 334 struct gl_enable_attrib {
 335    GLboolean AlphaTest;
 336    GLboolean AutoNormal;
 337    GLboolean Blend;
 338    GLboolean ClipPlane[MAX_CLIP_PLANES];
 339    GLboolean ColorMaterial;
 340    GLboolean Convolution1D;
 341    GLboolean Convolution2D;
 342    GLboolean Separable2D;
 343    GLboolean CullFace;
 344    GLboolean DepthTest;
 345    GLboolean Dither;
 346    GLboolean Fog;
 347    GLboolean Histogram;
 348    GLboolean Light[MAX_LIGHTS];
 349    GLboolean Lighting;
 350    GLboolean LineSmooth;
 351    GLboolean LineStipple;
 352    GLboolean IndexLogicOp;
 353    GLboolean ColorLogicOp;
 354    GLboolean Map1Color4;
 355    GLboolean Map1Index;
 356    GLboolean Map1Normal;
 357    GLboolean Map1TextureCoord1;
 358    GLboolean Map1TextureCoord2;
 359    GLboolean Map1TextureCoord3;
 360    GLboolean Map1TextureCoord4;
 361    GLboolean Map1Vertex3;
 362    GLboolean Map1Vertex4;
 363    GLboolean Map2Color4;
 364    GLboolean Map2Index;
 365    GLboolean Map2Normal;
 366    GLboolean Map2TextureCoord1;
 367    GLboolean Map2TextureCoord2;
 368    GLboolean Map2TextureCoord3;
 369    GLboolean Map2TextureCoord4;
 370    GLboolean Map2Vertex3;
 371    GLboolean Map2Vertex4;
 372    GLboolean MinMax;
 373    GLboolean Normalize;
 374    GLboolean PixelTexture;
 375    GLboolean PointSmooth;
 376    GLboolean PolygonOffsetPoint;
 377    GLboolean PolygonOffsetLine;
 378    GLboolean PolygonOffsetFill;
 379    GLboolean PolygonSmooth;
 380    GLboolean PolygonStipple;
 381    GLboolean RescaleNormals;
 382    GLboolean Scissor;
 383    GLboolean Stencil;
 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;
 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
 440    /* GL_EXT_clip_volume_hint */
 441    GLenum ClipVolumeClipping;
 442
 443    /* GL_ARB_texture_compression */
 444    GLenum TextureCompression;
 445 };
 446
 447
 448 struct gl_histogram_attrib {
 449    GLuint Width;                                /* number of table entries */
 450    GLint Format;                                /* GL_ALPHA, GL_RGB, etc */
 451    GLuint Count[HISTOGRAM_TABLE_SIZE][4];       /* the histogram */
 452    GLboolean Sink;                              /* terminate image transfer? */
 453    GLubyte RedSize;                             /* Bits per counter */
 454    GLubyte GreenSize;
 455    GLubyte BlueSize;
 456    GLubyte AlphaSize;
 457    GLubyte LuminanceSize;
 458 };
 459
 460
 461 struct gl_minmax_attrib {
 462    GLenum Format;
 463    GLboolean Sink;
 464    GLfloat Min[4], Max[4];   /* RGBA */
 465 };
 466
 467
 468 struct gl_convolution_attrib {
 469    GLenum Format;
 470    GLenum InternalFormat;
 471    GLuint Width;
 472    GLuint Height;
 473    GLfloat Filter[MAX_CONVOLUTION_WIDTH * MAX_CONVOLUTION_HEIGHT * 4];
 474 };
 475
 476
 477 struct gl_light_attrib {
 478    struct gl_light Light[MAX_LIGHTS];   /* Array of lights */
 479    struct gl_lightmodel Model;          /* Lighting model */
 480
 481    /* Must flush FLUSH_VERTICES before referencing:
 482     */
 483    struct gl_material Material[2];      /* Material 0=front, 1=back */
 484
 485    GLboolean Enabled;                   /* Lighting enabled flag */
 486    GLenum ShadeModel;                   /* GL_FLAT or GL_SMOOTH */
 487    GLenum ColorMaterialFace;            /* GL_FRONT, BACK or FRONT_AND_BACK */
 488    GLenum ColorMaterialMode;            /* GL_AMBIENT, GL_DIFFUSE, etc */
 489    GLuint ColorMaterialBitmask;         /* bitmask formed from Face and Mode */
 490    GLboolean ColorMaterialEnabled;
 491
 492    struct gl_light EnabledList;         /* List sentinel */
 493
 494    /* Derived for optimizations: */
 495    GLboolean _NeedVertices;             /* Use fast shader? */
 496    GLuint  _Flags;                      /* LIGHT_* flags, see below */
 497    GLfloat _BaseColor[2][3];
 498    GLchan _BaseAlpha[2];
 499 };
 500
 501
 502 #define LIGHT_SPOT         0x1
 503 #define LIGHT_LOCAL_VIEWER 0x2
 504 #define LIGHT_POSITIONAL   0x4
 505
 506 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
 507
 508 struct gl_line_attrib {
 509    GLboolean SmoothFlag;        /* GL_LINE_SMOOTH enabled? */
 510    GLboolean StippleFlag;       /* GL_LINE_STIPPLE enabled? */
 511    GLushort StipplePattern;     /* Stipple pattern */
 512    GLint StippleFactor;         /* Stipple repeat factor */
 513    GLfloat Width;               /* Line width */
 514    GLfloat _Width;              /* Clamped Line width */
 515 };
 516
 517
 518 struct gl_list_attrib {
 519    GLuint ListBase;
 520 };
 521
 522 struct gl_list_opcode {
 523    GLuint size;
 524    void (*execute)( GLcontext *ctx, void *data );
 525    void (*destroy)( GLcontext *ctx, void *data );
 526    void (*print)( GLcontext *ctx, void *data );
 527 };
 528
 529 #define GL_MAX_EXT_OPCODES 16
 530
 531 struct gl_list_extensions {
 532    struct gl_list_opcode opcode[GL_MAX_EXT_OPCODES];
 533    GLuint nr_opcodes;
 534 };
 535
 536 struct gl_pixel_attrib {
 537    GLenum ReadBuffer;           /* src buffer for glRead/CopyPixels */
 538    GLenum DriverReadBuffer;     /* Driver's current source buffer */
 539    GLfloat RedBias, RedScale;
 540    GLfloat GreenBias, GreenScale;
 541    GLfloat BlueBias, BlueScale;
 542    GLfloat AlphaBias, AlphaScale;
 543    GLfloat DepthBias, DepthScale;
 544    GLint IndexShift, IndexOffset;
 545    GLboolean MapColorFlag;
 546    GLboolean MapStencilFlag;
 547    GLfloat ZoomX, ZoomY;
 548    GLint MapStoSsize;           /* Size of each pixel map */
 549    GLint MapItoIsize;
 550    GLint MapItoRsize;
 551    GLint MapItoGsize;
 552    GLint MapItoBsize;
 553    GLint MapItoAsize;
 554    GLint MapRtoRsize;
 555    GLint MapGtoGsize;
 556    GLint MapBtoBsize;
 557    GLint MapAtoAsize;
 558    GLint MapStoS[MAX_PIXEL_MAP_TABLE];  /* Pixel map tables */
 559    GLint MapItoI[MAX_PIXEL_MAP_TABLE];
 560    GLfloat MapItoR[MAX_PIXEL_MAP_TABLE];
 561    GLfloat MapItoG[MAX_PIXEL_MAP_TABLE];
 562    GLfloat MapItoB[MAX_PIXEL_MAP_TABLE];
 563    GLfloat MapItoA[MAX_PIXEL_MAP_TABLE];
 564    GLubyte MapItoR8[MAX_PIXEL_MAP_TABLE];  /* converted to 8-bit color */
 565    GLubyte MapItoG8[MAX_PIXEL_MAP_TABLE];
 566    GLubyte MapItoB8[MAX_PIXEL_MAP_TABLE];
 567    GLubyte MapItoA8[MAX_PIXEL_MAP_TABLE];
 568    GLfloat MapRtoR[MAX_PIXEL_MAP_TABLE];
 569    GLfloat MapGtoG[MAX_PIXEL_MAP_TABLE];
 570    GLfloat MapBtoB[MAX_PIXEL_MAP_TABLE];
 571    GLfloat MapAtoA[MAX_PIXEL_MAP_TABLE];
 572    /* GL_EXT_histogram */
 573    GLboolean HistogramEnabled;
 574    GLboolean MinMaxEnabled;
 575    /* GL_SGIS_pixel_texture */
 576    GLboolean PixelTextureEnabled;
 577    GLenum FragmentRgbSource;
 578    GLenum FragmentAlphaSource;
 579    /* GL_SGI_color_matrix */
 580    GLfloat PostColorMatrixScale[4];  /* RGBA */
 581    GLfloat PostColorMatrixBias[4];   /* RGBA */
 582    /* GL_SGI_color_table */
 583    GLfloat ColorTableScale[4];
 584    GLfloat ColorTableBias[4];
 585    GLboolean ColorTableEnabled;
 586    GLfloat PCCTscale[4];
 587    GLfloat PCCTbias[4];
 588    GLboolean PostConvolutionColorTableEnabled;
 589    GLfloat PCMCTscale[4];
 590    GLfloat PCMCTbias[4];
 591    GLboolean PostColorMatrixColorTableEnabled;
 592    /* Convolution */
 593    GLboolean Convolution1DEnabled;
 594    GLboolean Convolution2DEnabled;
 595    GLboolean Separable2DEnabled;
 596    GLfloat ConvolutionBorderColor[3][4];
 597    GLenum ConvolutionBorderMode[3];
 598    GLfloat ConvolutionFilterScale[3][4];
 599    GLfloat ConvolutionFilterBias[3][4];
 600    GLfloat PostConvolutionScale[4];  /* RGBA */
 601    GLfloat PostConvolutionBias[4];   /* RGBA */
 602 };
 603
 604
 605 struct gl_point_attrib {
 606    GLboolean SmoothFlag;        /* True if GL_POINT_SMOOTH is enabled */
 607    GLboolean SpriteMode;        /* GL_MESA_sprite_point extension */
 608    GLfloat Size;                /* User-specified point size */
 609    GLfloat _Size;               /* Size clamped to Const.Min/MaxPointSize */
 610    GLfloat Params[3];           /* GL_EXT_point_parameters */
 611    GLfloat MinSize, MaxSize;    /* GL_EXT_point_parameters */
 612    GLfloat Threshold;           /* GL_EXT_point_parameters */
 613    GLboolean _Attenuated;       /* True if Params != [1, 0, 0] */
 614 };
 615
 616
 617 struct gl_polygon_attrib {
 618    GLenum FrontFace;            /* Either GL_CW or GL_CCW */
 619    GLenum FrontMode;            /* Either GL_POINT, GL_LINE or GL_FILL */
 620    GLenum BackMode;             /* Either GL_POINT, GL_LINE or GL_FILL */
 621    GLboolean _FrontBit;         /*  */
 622    GLboolean CullFlag;          /* Culling on/off flag */
 623    GLboolean SmoothFlag;        /* True if GL_POLYGON_SMOOTH is enabled */
 624    GLboolean StippleFlag;       /* True if GL_POLYGON_STIPPLE is enabled */
 625    GLenum CullFaceMode;         /* Culling mode GL_FRONT or GL_BACK */
 626    GLfloat OffsetFactor;        /* Polygon offset factor, from user */
 627    GLfloat OffsetUnits;         /* Polygon offset units, from user */
 628    GLfloat OffsetMRD;           /* = OffsetUnits * visual->MRD */
 629    GLboolean OffsetPoint;       /* Offset in GL_POINT mode */
 630    GLboolean OffsetLine;        /* Offset in GL_LINE mode */
 631    GLboolean OffsetFill;        /* Offset in GL_FILL mode */
 632    GLboolean _OffsetAny;
 633 };
 634
 635
 636 struct gl_scissor_attrib {
 637    GLboolean Enabled;           /* Scissor test enabled? */
 638    GLint X, Y;                  /* Lower left corner of box */
 639    GLsizei Width, Height;       /* Size of box */
 640 };
 641
 642
 643 struct gl_stencil_attrib {
 644    GLboolean Enabled;           /* Enabled flag */
 645    GLenum Function;             /* Stencil function */
 646    GLenum FailFunc;             /* Fail function */
 647    GLenum ZPassFunc;            /* Depth buffer pass function */
 648    GLenum ZFailFunc;            /* Depth buffer fail function */
 649    GLstencil Ref;               /* Reference value */
 650    GLstencil ValueMask;         /* Value mask */
 651    GLstencil Clear;             /* Clear value */
 652    GLstencil WriteMask;         /* Write mask */
 653 };
 654
 655
 656 /* TexGenEnabled flags */
 657 #define S_BIT 1
 658 #define T_BIT 2
 659 #define R_BIT 4
 660 #define Q_BIT 8
 661
 662 /* Texture Enabled flags */
 663 #define TEXTURE0_1D   0x1     /* Texture unit 0 (default) */
 664 #define TEXTURE0_2D   0x2
 665 #define TEXTURE0_3D   0x4
 666 #define TEXTURE0_CUBE 0x8
 667 #define TEXTURE0_ANY  (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D | TEXTURE0_CUBE)
 668 #define TEXTURE1_1D   (TEXTURE0_1D << 4)    /* Texture unit 1 */
 669 #define TEXTURE1_2D   (TEXTURE0_2D << 4)
 670 #define TEXTURE1_3D   (TEXTURE0_3D << 4)
 671 #define TEXTURE1_CUBE (TEXTURE0_CUBE << 4)
 672 #define TEXTURE1_ANY  (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D | TEXTURE1_CUBE)
 673 #define TEXTURE2_1D   (TEXTURE0_1D << 8)    /* Texture unit 2 */
 674 #define TEXTURE2_2D   (TEXTURE0_2D << 8)
 675 #define TEXTURE2_3D   (TEXTURE0_3D << 8)
 676 #define TEXTURE2_CUBE (TEXTURE0_CUBE << 8)
 677 #define TEXTURE2_ANY  (TEXTURE2_1D | TEXTURE2_2D | TEXTURE2_3D | TEXTURE2_CUBE)
 678 #define TEXTURE3_1D   (TEXTURE0_1D << 12)    /* Texture unit 3 */
 679 #define TEXTURE3_2D   (TEXTURE0_2D << 12)
 680 #define TEXTURE3_3D   (TEXTURE0_3D << 12)
 681 #define TEXTURE3_CUBE (TEXTURE0_CUBE << 12)
 682 #define TEXTURE3_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 683 #define TEXTURE4_1D   (TEXTURE0_1D << 16)    /* Texture unit 3 */
 684 #define TEXTURE4_2D   (TEXTURE0_2D << 16)
 685 #define TEXTURE4_3D   (TEXTURE0_3D << 16)
 686 #define TEXTURE4_CUBE (TEXTURE0_CUBE << 16)
 687 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 688 #define TEXTURE5_1D   (TEXTURE0_1D << 20)    /* Texture unit 3 */
 689 #define TEXTURE5_2D   (TEXTURE0_2D << 20)
 690 #define TEXTURE5_3D   (TEXTURE0_3D << 20)
 691 #define TEXTURE5_CUBE (TEXTURE0_CUBE << 20)
 692 #define TEXTURE5_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 693 #define TEXTURE6_1D   (TEXTURE0_1D << 24)    /* Texture unit 3 */
 694 #define TEXTURE6_2D   (TEXTURE0_2D << 24)
 695 #define TEXTURE6_3D   (TEXTURE0_3D << 24)
 696 #define TEXTURE6_CUBE (TEXTURE0_CUBE << 24)
 697 #define TEXTURE6_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 698 #define TEXTURE7_1D   (TEXTURE0_1D << 28)    /* Texture unit 3 */
 699 #define TEXTURE7_2D   (TEXTURE0_2D << 28)
 700 #define TEXTURE7_3D   (TEXTURE0_3D << 28)
 701 #define TEXTURE7_CUBE (TEXTURE0_CUBE << 28)
 702 #define TEXTURE7_ANY  (TEXTURE3_1D | TEXTURE3_2D | TEXTURE3_3D | TEXTURE3_CUBE)
 703
 704 /* Bitmap versions of the GL_ constants.
 705  */
 706 #define TEXGEN_SPHERE_MAP        0x1
 707 #define TEXGEN_OBJ_LINEAR        0x2
 708 #define TEXGEN_EYE_LINEAR        0x4
 709 #define TEXGEN_REFLECTION_MAP_NV 0x8
 710 #define TEXGEN_NORMAL_MAP_NV     0x10
 711
 712 #define TEXGEN_NEED_M            (TEXGEN_SPHERE_MAP)
 713 #define TEXGEN_NEED_F            (TEXGEN_SPHERE_MAP        | \
 714                                   TEXGEN_REFLECTION_MAP_NV)
 715 #define TEXGEN_NEED_NORMALS      (TEXGEN_SPHERE_MAP        | \
 716                                   TEXGEN_REFLECTION_MAP_NV | \
 717                                   TEXGEN_NORMAL_MAP_NV)
 718 #define TEXGEN_NEED_VERTICES     (TEXGEN_OBJ_LINEAR |           \
 719                                   TEXGEN_EYE_LINEAR |           \
 720                                   TEXGEN_REFLECTION_MAP_NV |    \
 721                                   TEXGEN_SPHERE_MAP )
 722 #define TEXGEN_NEED_EYE_COORD    (TEXGEN_SPHERE_MAP        | \
 723                                   TEXGEN_REFLECTION_MAP_NV | \
 724                                   TEXGEN_NORMAL_MAP_NV     | \
 725                                   TEXGEN_EYE_LINEAR)
 726
 727
 728
 729 /* A selection of state flags to make driver and module's lives easier.
 730  */
 731 #define ENABLE_TEXGEN0        0x1
 732 #define ENABLE_TEXGEN1        0x2
 733 #define ENABLE_TEXGEN2        0x4
 734 #define ENABLE_TEXGEN3        0x8
 735 #define ENABLE_TEXGEN4        0x10
 736 #define ENABLE_TEXGEN5        0x20
 737 #define ENABLE_TEXGEN6        0x40
 738 #define ENABLE_TEXGEN7        0x80
 739 #define ENABLE_TEXMAT0        0x100     /* Ie. not the identity matrix */
 740 #define ENABLE_TEXMAT1        0x200
 741 #define ENABLE_TEXMAT2        0x400
 742 #define ENABLE_TEXMAT3        0x800
 743 #define ENABLE_TEXMAT4        0x1000
 744 #define ENABLE_TEXMAT5        0x2000
 745 #define ENABLE_TEXMAT6        0x4000
 746 #define ENABLE_TEXMAT7        0x8000
 747 #define ENABLE_LIGHT          0x10000
 748 #define ENABLE_FOG            0x20000
 749 #define ENABLE_USERCLIP       0x40000
 750 #define ENABLE_NORMALIZE      0x100000
 751 #define ENABLE_RESCALE        0x200000
 752 #define ENABLE_POINT_ATTEN    0x400000
 753
 754
 755 #define ENABLE_TEXGEN_ANY (ENABLE_TEXGEN0 | ENABLE_TEXGEN1 | \
 756                            ENABLE_TEXGEN2 | ENABLE_TEXGEN3 | \
 757                            ENABLE_TEXGEN4 | ENABLE_TEXGEN5 | \
 758                            ENABLE_TEXGEN6 | ENABLE_TEXGEN7)
 759
 760 #define ENABLE_TEXMAT_ANY (ENABLE_TEXMAT0 | ENABLE_TEXMAT1 | \
 761                            ENABLE_TEXMAT2 | ENABLE_TEXMAT3 | \
 762                            ENABLE_TEXMAT4 | ENABLE_TEXMAT5 | \
 763                            ENABLE_TEXMAT6 | ENABLE_TEXMAT7)
 764
 765 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
 766 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
 767
 768
 769 /*
 770  * If teximage is color-index, texelOut returns GLchan[1].
 771  * If teximage is depth, texelOut returns GLfloat[1].
 772  * Otherwise, texelOut returns GLchan[4].
 773  */
 774 typedef void (*FetchTexelFunc)( const struct gl_texture_image *texImage,
 775                                 GLint col, GLint row, GLint img,
 776                                 GLvoid *texelOut );
 777
 778 /* Texture format record */
 779 struct gl_texture_format {
 780    GLint IntFormat;             /* One of the MESA_FORMAT_* values */
 781
 782    GLubyte RedBits;             /* Bits per texel component */
 783    GLubyte GreenBits;
 784    GLubyte BlueBits;
 785    GLubyte AlphaBits;
 786    GLubyte LuminanceBits;
 787    GLubyte IntensityBits;
 788    GLubyte IndexBits;
 789    GLubyte DepthBits;
 790
 791    GLint TexelBytes;
 792
 793    FetchTexelFunc FetchTexel1D; /* Texel fetch function pointers */
 794    FetchTexelFunc FetchTexel2D;
 795    FetchTexelFunc FetchTexel3D;
 796 };
 797
 798 /* Texture image record */
 799 struct gl_texture_image {
 800    GLenum Format;               /* GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA,
 801                                  * GL_INTENSITY, GL_RGB, GL_RGBA, or
 802                                  * GL_COLOR_INDEX only
 803                                  */
 804    GLenum Type;                 /* Texel type: GL_UNSIGNED_BYTE, etc. */
 805    GLenum IntFormat;            /* Internal format as given by the user */
 806    GLuint Border;               /* 0 or 1 */
 807    GLuint Width;                /* = 2^WidthLog2 + 2*Border */
 808    GLuint Height;               /* = 2^HeightLog2 + 2*Border */
 809    GLuint Depth;                /* = 2^DepthLog2 + 2*Border */
 810    GLuint Width2;               /* = Width - 2*Border */
 811    GLuint Height2;              /* = Height - 2*Border */
 812    GLuint Depth2;               /* = Depth - 2*Border */
 813    GLuint WidthLog2;            /* = log2(Width2) */
 814    GLuint HeightLog2;           /* = log2(Height2) */
 815    GLuint DepthLog2;            /* = log2(Depth2) */
 816    GLuint MaxLog2;              /* = MAX(WidthLog2, HeightLog2) */
 817    GLvoid *Data;                /* Image data, accessed via FetchTexel() */
 818
 819    const struct gl_texture_format *TexFormat;
 820
 821    FetchTexelFunc FetchTexel;   /* Texel fetch function pointer */
 822
 823    GLboolean IsCompressed;      /* GL_ARB_texture_compression */
 824    GLuint CompressedSize;       /* GL_ARB_texture_compression */
 825
 826    /* For device driver: */
 827    void *DriverData;            /* Arbitrary device driver data */
 828 };
 829
 830
 831 /* Texture object record */
 832 struct gl_texture_object {
 833    _glthread_Mutex Mutex;       /* for thread safety */
 834    GLint RefCount;              /* reference count */
 835    GLuint Name;                 /* an unsigned integer */
 836    GLuint Dimensions;           /* 1 or 2 or 3 or 6 (cube map) */
 837    GLfloat Priority;            /* in [0,1] */
 838    GLchan BorderColor[4];
 839    GLenum WrapS;                /* GL_CLAMP, REPEAT or CLAMP_TO_EDGE */
 840    GLenum WrapT;                /* GL_CLAMP, REPEAT or CLAMP_TO_EDGE */
 841    GLenum WrapR;                /* GL_CLAMP, REPEAT or CLAMP_TO_EDGE */
 842    GLenum MinFilter;            /* minification filter */
 843    GLenum MagFilter;            /* magnification filter */
 844    GLfloat MinLod;              /* min lambda, OpenGL 1.2 */
 845    GLfloat MaxLod;              /* max lambda, OpenGL 1.2 */
 846    GLint BaseLevel;             /* min mipmap level, OpenGL 1.2 */
 847    GLint MaxLevel;              /* max mipmap level, OpenGL 1.2 */
 848    GLfloat MaxAnisotropy;       /* GL_EXT_texture_filter_anisotropic */
 849    GLboolean CompareFlag;       /* GL_SGIX_shadow */
 850    GLenum CompareOperator;      /* GL_SGIX_shadow */
 851    GLchan ShadowAmbient;        /* GL_SGIX_shadow_ambient */
 852    GLint _MaxLevel;             /* actual max mipmap level (q in the spec) */
 853    GLfloat _MaxLambda;          /* = _MaxLevel - BaseLevel (q - b in spec) */
 854    struct gl_texture_image *Image[MAX_TEXTURE_LEVELS];
 855
 856    /* Texture cube faces */
 857    /* Image[] is alias for *PosX[MAX_TEXTURE_LEVELS]; */
 858    struct gl_texture_image *NegX[MAX_TEXTURE_LEVELS];
 859    struct gl_texture_image *PosY[MAX_TEXTURE_LEVELS];
 860    struct gl_texture_image *NegY[MAX_TEXTURE_LEVELS];
 861    struct gl_texture_image *PosZ[MAX_TEXTURE_LEVELS];
 862    struct gl_texture_image *NegZ[MAX_TEXTURE_LEVELS];
 863
 864    /* GL_EXT_paletted_texture */
 865    struct gl_color_table Palette;
 866
 867    GLboolean Complete;                  /* Is texture object complete? */
 868    struct gl_texture_object *Next;      /* Next in linked list */
 869
 870    /* For device driver: */
 871    void *DriverData;    /* Arbitrary device driver data */
 872 };
 873
 874
 875
 876 /*
 877  * Texture units are new with the multitexture extension.
 878  */
 879 struct gl_texture_unit {
 880    GLuint Enabled;              /* bitmask of TEXTURE0_1D, _2D, _3D, _CUBE */
 881    GLuint _ReallyEnabled;       /* 0 or one of TEXTURE0_1D, _2D, _3D, _CUBE */
 882
 883    GLenum EnvMode;              /* GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
 884    GLfloat EnvColor[4];
 885    GLuint TexGenEnabled;        /* Bitwise-OR of [STRQ]_BIT values */
 886    GLenum GenModeS;             /* Tex coord generation mode, either */
 887    GLenum GenModeT;             /*      GL_OBJECT_LINEAR, or */
 888    GLenum GenModeR;             /*      GL_EYE_LINEAR, or    */
 889    GLenum GenModeQ;             /*      GL_SPHERE_MAP        */
 890    GLuint _GenBitS;
 891    GLuint _GenBitT;
 892    GLuint _GenBitR;
 893    GLuint _GenBitQ;
 894    GLuint _GenFlags;            /* bitwise or of GenBit[STRQ] */
 895    GLfloat ObjectPlaneS[4];
 896    GLfloat ObjectPlaneT[4];
 897    GLfloat ObjectPlaneR[4];
 898    GLfloat ObjectPlaneQ[4];
 899    GLfloat EyePlaneS[4];
 900    GLfloat EyePlaneT[4];
 901    GLfloat EyePlaneR[4];
 902    GLfloat EyePlaneQ[4];
 903    GLfloat LodBias;             /* for biasing mipmap levels */
 904
 905    /* GL_EXT_texture_env_combine */
 906    GLenum CombineModeRGB;       /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 907    GLenum CombineModeA;         /* GL_REPLACE, GL_DECAL, GL_ADD, etc. */
 908    GLenum CombineSourceRGB[3];  /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 909    GLenum CombineSourceA[3];    /* GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
 910    GLenum CombineOperandRGB[3]; /* SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
 911    GLenum CombineOperandA[3];   /* SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
 912    GLuint CombineScaleShiftRGB; /* 0, 1 or 2 */
 913    GLuint CombineScaleShiftA;   /* 0, 1 or 2 */
 914
 915    struct gl_texture_object *Current1D;
 916    struct gl_texture_object *Current2D;
 917    struct gl_texture_object *Current3D;
 918    struct gl_texture_object *CurrentCubeMap; /* GL_ARB_texture_cube_map */
 919
 920    struct gl_texture_object *_Current; /* Points to really enabled tex obj */
 921
 922    struct gl_texture_object Saved1D;  /* only used by glPush/PopAttrib */
 923    struct gl_texture_object Saved2D;
 924    struct gl_texture_object Saved3D;
 925    struct gl_texture_object SavedCubeMap;
 926 };
 927
 928
 929 struct gl_texture_attrib {
 930    /* multitexture */
 931    GLuint CurrentUnit;            /* Active texture unit */
 932    GLuint CurrentTransformUnit;   /* Client active texture xform unit */
 933
 934    GLuint _ReallyEnabled;     /* enables for all texture units: */
 935                              /* = (Unit[0]._ReallyEnabled << 0) | */
 936                              /*   (Unit[1]._ReallyEnabled << 4) | */
 937                              /*   (Unit[2]._ReallyEnabled << 8) | etc... */
 938    GLuint _GenFlags;  /* for texgen */
 939
 940    struct gl_texture_unit Unit[MAX_TEXTURE_UNITS];
 941
 942    struct gl_texture_object *Proxy1D;
 943    struct gl_texture_object *Proxy2D;
 944    struct gl_texture_object *Proxy3D;
 945    struct gl_texture_object *ProxyCubeMap;
 946
 947    /* GL_EXT_shared_texture_palette */
 948    GLboolean SharedPalette;
 949    struct gl_color_table Palette;
 950 };
 951
 952
 953 struct gl_transform_attrib {
 954    GLenum MatrixMode;                           /* Matrix mode */
 955    GLfloat EyeUserPlane[MAX_CLIP_PLANES][4];
 956    GLfloat _ClipUserPlane[MAX_CLIP_PLANES][4];  /* derived */
 957    GLboolean ClipEnabled[MAX_CLIP_PLANES];
 958    GLubyte   _AnyClip;                          /* How many ClipEnabled? */
 959    GLboolean Normalize;                         /* Normalize all normals? */
 960    GLboolean RescaleNormals;                    /* GL_EXT_rescale_normal */
 961 };
 962
 963
 964 struct gl_viewport_attrib {
 965    GLint X, Y;                  /* position */
 966    GLsizei Width, Height;       /* size */
 967    GLfloat Near, Far;           /* Depth buffer range */
 968    GLmatrix _WindowMap;         /* Mapping transformation as a matrix. */
 969 };
 970
 971
 972 /* For the attribute stack: */
 973 struct gl_attrib_node {
 974    GLbitfield kind;
 975    void *data;
 976    struct gl_attrib_node *next;
 977 };
 978
 979
 980
 981 /*
 982  * Client pixel packing/unpacking attributes
 983  */
 984 struct gl_pixelstore_attrib {
 985    GLint Alignment;
 986    GLint RowLength;
 987    GLint SkipPixels;
 988    GLint SkipRows;
 989    GLint ImageHeight;     /* for GL_EXT_texture3D */
 990    GLint SkipImages;      /* for GL_EXT_texture3D */
 991    GLboolean SwapBytes;
 992    GLboolean LsbFirst;
 993 };
 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    GLboolean Enabled;
1006 };
1007
1008
1009
1010
1011 struct gl_array_attrib {
1012    struct gl_client_array Vertex;            /* client data descriptors */
1013    struct gl_client_array Normal;
1014    struct gl_client_array Color;
1015    struct gl_client_array SecondaryColor;
1016    struct gl_client_array FogCoord;
1017    struct gl_client_array Index;
1018    struct gl_client_array TexCoord[MAX_TEXTURE_UNITS];
1019    struct gl_client_array EdgeFlag;
1020
1021    GLint TexCoordInterleaveFactor;
1022    GLint ActiveTexture;         /* Client Active Texture */
1023    GLuint LockFirst;
1024    GLuint LockCount;
1025
1026    GLuint _Enabled;             /* _NEW_ARRAY_* - bit set if array enabled */
1027    GLuint NewState;             /* _NEW_ARRAY_* */
1028 };
1029
1030
1031
1032
1033 struct gl_feedback {
1034    GLenum Type;
1035    GLuint _Mask;                /* FB_* bits */
1036    GLfloat *Buffer;
1037    GLuint BufferSize;
1038    GLuint Count;
1039 };
1040
1041
1042
1043 struct gl_selection {
1044    GLuint *Buffer;
1045    GLuint BufferSize;   /* size of SelectBuffer */
1046    GLuint BufferCount;  /* number of values in SelectBuffer */
1047    GLuint Hits;         /* number of records in SelectBuffer */
1048    GLuint NameStackDepth;
1049    GLuint NameStack[MAX_NAME_STACK_DEPTH];
1050    GLboolean HitFlag;
1051    GLfloat HitMinZ, HitMaxZ;
1052 };
1053
1054
1055
1056 /*
1057  * 1-D Evaluator control points
1058  */
1059 struct gl_1d_map {
1060    GLuint Order;        /* Number of control points */
1061    GLfloat u1, u2, du;  /* u1, u2, 1.0/(u2-u1) */
1062    GLfloat *Points;     /* Points to contiguous control points */
1063 };
1064
1065
1066 /*
1067  * 2-D Evaluator control points
1068  */
1069 struct gl_2d_map {
1070    GLuint Uorder;               /* Number of control points in U dimension */
1071    GLuint Vorder;               /* Number of control points in V dimension */
1072    GLfloat u1, u2, du;
1073    GLfloat v1, v2, dv;
1074    GLfloat *Points;             /* Points to contiguous control points */
1075 };
1076
1077
1078 /*
1079  * All evalutator control points
1080  */
1081 struct gl_evaluators {
1082    /* 1-D maps */
1083    struct gl_1d_map Map1Vertex3;
1084    struct gl_1d_map Map1Vertex4;
1085    struct gl_1d_map Map1Index;
1086    struct gl_1d_map Map1Color4;
1087    struct gl_1d_map Map1Normal;
1088    struct gl_1d_map Map1Texture1;
1089    struct gl_1d_map Map1Texture2;
1090    struct gl_1d_map Map1Texture3;
1091    struct gl_1d_map Map1Texture4;
1092
1093    /* 2-D maps */
1094    struct gl_2d_map Map2Vertex3;
1095    struct gl_2d_map Map2Vertex4;
1096    struct gl_2d_map Map2Index;
1097    struct gl_2d_map Map2Color4;
1098    struct gl_2d_map Map2Normal;
1099    struct gl_2d_map Map2Texture1;
1100    struct gl_2d_map Map2Texture2;
1101    struct gl_2d_map Map2Texture3;
1102    struct gl_2d_map Map2Texture4;
1103 };
1104
1105
1106
1107 /*
1108  * State which can be shared by multiple contexts:
1109  */
1110 struct gl_shared_state {
1111    _glthread_Mutex Mutex;                  /* for thread safety */
1112    GLint RefCount;                         /* Reference count */
1113    struct _mesa_HashTable *DisplayList;    /* Display lists hash table */
1114    struct _mesa_HashTable *TexObjects;     /* Texture objects hash table */
1115    struct gl_texture_object *TexObjectList;/* Linked list of texture objects */
1116
1117    /* Default texture objects (shared by all multi-texture units) */
1118    struct gl_texture_object *Default1D;
1119    struct gl_texture_object *Default2D;
1120    struct gl_texture_object *Default3D;
1121    struct gl_texture_object *DefaultCubeMap;
1122
1123    void *DriverData;  /* Device driver shared state */
1124 };
1125
1126
1127
1128 /*
1129  * A "frame buffer" is a color buffer and its optional ancillary buffers:
1130  * depth, accum, stencil, and software-simulated alpha buffers.
1131  * In C++ terms, think of this as a base class from which device drivers
1132  * will make derived classes.
1133  */
1134 struct gl_frame_buffer {
1135    GLvisual Visual;             /* The corresponding visual */
1136
1137    GLint Width, Height;         /* size of frame buffer in pixels */
1138
1139    GLboolean UseSoftwareDepthBuffer;
1140    GLboolean UseSoftwareAccumBuffer;
1141    GLboolean UseSoftwareStencilBuffer;
1142    GLboolean UseSoftwareAlphaBuffers;
1143
1144    /* Software depth (aka Z) buffer */
1145    GLvoid *DepthBuffer;         /* array [Width*Height] of GLushort or GLuint*/
1146
1147    /* Software stencil buffer */
1148    GLstencil *Stencil;          /* array [Width*Height] of GLstencil values */
1149
1150    /* Software accumulation buffer */
1151    GLaccum *Accum;              /* array [4*Width*Height] of GLaccum values */
1152
1153    /* Software alpha planes */
1154    GLchan *FrontLeftAlpha;      /* array [Width*Height] of GLubyte */
1155    GLchan *BackLeftAlpha;       /* array [Width*Height] of GLubyte */
1156    GLchan *FrontRightAlpha;     /* array [Width*Height] of GLubyte */
1157    GLchan *BackRightAlpha;      /* array [Width*Height] of GLubyte */
1158    GLchan *Alpha;               /* Points to current alpha buffer */
1159
1160    /* Drawing bounds: intersection of window size and scissor box */
1161    GLint _Xmin, _Ymin;  /* inclusive */
1162    GLint _Xmax, _Ymax;  /* exclusive */
1163 };
1164
1165
1166 /*
1167  * Constants which may be overriden by device driver.
1168  */
1169 struct gl_constants {
1170    GLint MaxTextureSize;
1171    GLint MaxCubeTextureSize;
1172    GLint MaxTextureLevels;
1173    GLuint MaxTextureUnits;
1174    GLfloat MaxTextureMaxAnisotropy;     /* GL_EXT_texture_filter_anisotropic */
1175    GLuint MaxArrayLockSize;
1176    GLint SubPixelBits;
1177    GLfloat MinPointSize, MaxPointSize;          /* aliased */
1178    GLfloat MinPointSizeAA, MaxPointSizeAA;      /* antialiased */
1179    GLfloat PointSizeGranularity;
1180    GLfloat MinLineWidth, MaxLineWidth;          /* aliased */
1181    GLfloat MinLineWidthAA, MaxLineWidthAA;      /* antialiased */
1182    GLfloat LineWidthGranularity;
1183    GLuint NumAuxBuffers;
1184    GLuint MaxColorTableSize;
1185    GLuint MaxConvolutionWidth;
1186    GLuint MaxConvolutionHeight;
1187    GLuint NumCompressedTextureFormats;  /* GL_ARB_texture_compression */
1188    GLenum CompressedTextureFormats[MAX_COMPRESSED_TEXTURE_FORMATS];
1189    GLuint MaxClipPlanes;
1190    GLuint MaxLights;
1191 };
1192
1193
1194 /*
1195  * List of extensions.
1196  */
1197 struct extension;
1198 struct gl_extensions {
1199    char *ext_string;
1200    struct extension *ext_list;
1201    /* Flags to quickly test if certain extensions are available.
1202     * Not every extension needs to have such a flag, but it's encouraged.
1203     */
1204    GLboolean ARB_imaging;
1205    GLboolean ARB_multitexture;
1206    GLboolean ARB_texture_compression;
1207    GLboolean ARB_texture_cube_map;
1208    GLboolean EXT_blend_color;
1209    GLboolean EXT_blend_func_separate;
1210    GLboolean EXT_blend_logic_op;
1211    GLboolean EXT_blend_minmax;
1212    GLboolean EXT_blend_subtract;
1213    GLboolean EXT_clip_volume_hint;
1214    GLboolean EXT_convolution;
1215    GLboolean EXT_compiled_vertex_array;
1216    GLboolean EXT_fog_coord;
1217    GLboolean EXT_histogram;
1218    GLboolean EXT_packed_pixels;
1219    GLboolean EXT_paletted_texture;
1220    GLboolean EXT_point_parameters;
1221    GLboolean EXT_polygon_offset;
1222    GLboolean EXT_rescale_normal;
1223    GLboolean EXT_secondary_color;
1224    GLboolean EXT_shared_texture_palette;
1225    GLboolean EXT_stencil_wrap;
1226    GLboolean EXT_texture3D;
1227    GLboolean EXT_texture_compression_s3tc;
1228    GLboolean EXT_texture_env_add;
1229    GLboolean EXT_texture_env_combine;
1230    GLboolean EXT_texture_env_dot3;
1231    GLboolean EXT_texture_filter_anisotropic;
1232    GLboolean EXT_texture_object;
1233    GLboolean EXT_texture_lod_bias;
1234    GLboolean EXT_vertex_array_set;
1235    GLboolean HP_occlusion_test;
1236    GLboolean INGR_blend_func_separate;
1237    GLboolean MESA_window_pos;
1238    GLboolean MESA_resize_buffers;
1239    GLboolean MESA_sprite_point;
1240    GLboolean NV_blend_square;
1241    GLboolean NV_texgen_reflection;
1242    GLboolean SGI_color_matrix;
1243    GLboolean SGI_color_table;
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_400                0x400      /*  */
1299 #define _NEW_LIGHT              0x800      /* ctx->Light */
1300 #define _NEW_1000               0x1000     /*  */
1301 #define _NEW_LINE               0x2000     /* ctx->Line */
1302 #define _NEW_4000               0x4000     /*  */
1303 #define _NEW_PIXEL              0x8000     /* ctx->Pixel */
1304 #define _NEW_POINT              0x10000    /* ctx->Point */
1305 #define _NEW_POLYGON            0x20000    /* ctx->Polygon */
1306 #define _NEW_POLYGONSTIPPLE     0x40000    /* ctx->PolygonStipple */
1307 #define _NEW_SCISSOR            0x80000    /* ctx->Scissor */
1308 #define _NEW_STENCIL            0x100000   /* ctx->Stencil */
1309 #define _NEW_TEXTURE            0x200000   /* ctx->Texture */
1310 #define _NEW_TRANSFORM          0x400000   /* ctx->Transform */
1311 #define _NEW_VIEWPORT           0x800000   /* ctx->Viewport */
1312 #define _NEW_PACKUNPACK         0x1000000  /* ctx->Pack, ctx->Unpack */
1313 #define _NEW_ARRAY              0x2000000  /* ctx->Array */
1314 #define _NEW_COLORTABLE         0x4000000  /* ctx->{*}ColorTable */
1315 #define _NEW_RENDERMODE         0x8000000  /* RenderMode, Feedback, Select */
1316 #define _NEW_BUFFERS            0x10000000 /* ctx->Visual, ctx->DrawBuffer, */
1317
1318 #define _NEW_ALL ~0
1319
1320
1321
1322 /* Bits to track array state changes (also used to summarize array enabled)
1323  */
1324 #define _NEW_ARRAY_VERTEX           0x1
1325 #define _NEW_ARRAY_COLOR            0x2
1326 #define _NEW_ARRAY_NORMAL           0x4
1327 #define _NEW_ARRAY_INDEX            0x8
1328 #define _NEW_ARRAY_EDGEFLAG         0x10
1329 #define _NEW_ARRAY_SECONDARYCOLOR   0x20
1330 #define _NEW_ARRAY_FOGCOORD         0x40
1331 #define _NEW_ARRAY_TEXCOORD_0       0x80
1332 #define _NEW_ARRAY_TEXCOORD_1       0x100
1333 #define _NEW_ARRAY_TEXCOORD_2       0x200
1334 #define _NEW_ARRAY_TEXCOORD_3       0x400
1335 #define _NEW_ARRAY_TEXCOORD_4       0x800
1336 #define _NEW_ARRAY_TEXCOORD_5       0x1000
1337 #define _NEW_ARRAY_TEXCOORD_6       0x2000
1338 #define _NEW_ARRAY_TEXCOORD_7       0x4000
1339 #define _NEW_ARRAY_ALL              0x7fff
1340
1341 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0<<(i))
1342
1343 /* A bunch of flags that we think might be useful to drivers.
1344  */
1345 #define DD_FEEDBACK                 0x1
1346 #define DD_SELECT                   0x2
1347 #define DD_FLATSHADE                0x4
1348 #define DD_SEPERATE_SPECULAR        0x10
1349 #define DD_TRI_LIGHT_TWOSIDE        0x20
1350 #define DD_TRI_UNFILLED             0x40
1351 #define DD_TRI_SMOOTH               0x80
1352 #define DD_TRI_STIPPLE              0x100
1353 #define DD_TRI_OFFSET               0x200
1354 #define DD_LINE_SMOOTH              0x800
1355 #define DD_LINE_STIPPLE             0x1000
1356 #define DD_LINE_WIDTH               0x2000
1357 #define DD_POINT_SMOOTH             0x4000
1358 #define DD_POINT_SIZE               0x8000
1359 #define DD_POINT_ATTEN              0x10000
1360 #define DD_TRI_CULL_FRONT_BACK      0x400000 /* special case on some hw */
1361 #define DD_Z_NEVER                  0x800000 /* special case on some hw */
1362 #define DD_STENCIL                  0x1000000
1363
1364 /* Define the state changes under which each of these bits might change
1365  */
1366 #define _DD_NEW_FEEDBACK                 _NEW_RENDERMODE
1367 #define _DD_NEW_SELECT                   _NEW_RENDERMODE
1368 #define _DD_NEW_FLATSHADE                _NEW_LIGHT
1369 #define _DD_NEW_MULTIDRAW                _NEW_COLOR
1370 #define _DD_NEW_SEPERATE_SPECULAR        (_NEW_LIGHT|_NEW_FOG)
1371 #define _DD_NEW_TRI_LIGHT_TWOSIDE        _NEW_LIGHT
1372 #define _DD_NEW_TRI_UNFILLED             _NEW_POLYGON
1373 #define _DD_NEW_TRI_SMOOTH               _NEW_POLYGON
1374 #define _DD_NEW_TRI_STIPPLE              _NEW_POLYGON
1375 #define _DD_NEW_TRI_OFFSET               _NEW_POLYGON
1376 #define _DD_NEW_LINE_SMOOTH              _NEW_LINE
1377 #define _DD_NEW_LINE_STIPPLE             _NEW_LINE
1378 #define _DD_NEW_LINE_WIDTH               _NEW_LINE
1379 #define _DD_NEW_POINT_SMOOTH             _NEW_POINT
1380 #define _DD_NEW_POINT_SIZE               _NEW_POINT
1381 #define _DD_NEW_POINT_ATTEN              _NEW_POINT
1382 #define _DD_NEW_TRI_CULL_FRONT_BACK      _NEW_POLYGON
1383 #define _DD_NEW_Z_NEVER                  _NEW_DEPTH
1384 #define _DD_NEW_STENCIL                  _NEW_STENCIL
1385
1386
1387 #define _MESA_NEW_NEED_EYE_COORDS         (_NEW_LIGHT|          \
1388                                             _NEW_TEXTURE|               \
1389                                             _NEW_POINT|         \
1390                                             _NEW_MODELVIEW)
1391
1392 #define _MESA_NEW_NEED_NORMALS            (_NEW_LIGHT|          \
1393                                             _NEW_TEXTURE)
1394 #define _IMAGE_NEW_TRANSFER_STATE        (_NEW_PIXEL|_NEW_COLOR_MATRIX)
1395
1396
1397 #define NEED_NORMALS_TEXGEN      0x1
1398 #define NEED_NORMALS_LIGHT       0x2
1399
1400 #define NEED_EYE_TEXGEN          0x1
1401 #define NEED_EYE_LIGHT           0x2
1402 #define NEED_EYE_LIGHT_MODELVIEW 0x4
1403 #define NEED_EYE_POINT_ATTEN     0x8
1404
1405
1406
1407 /*
1408  * Forward declaration of display list datatypes:
1409  */
1410 union node;
1411 typedef union node Node;
1412
1413
1414
1415
1416 /* This has to be included here. */
1417 #include "dd.h"
1418
1419
1420
1421
1422 /*
1423  * Core Mesa's support for tnl modules:
1424  */
1425 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
1426
1427 struct gl_tnl_module {
1428    /* Vertex format to be lazily swapped into current dispatch.
1429     */
1430    GLvertexformat *Current;
1431
1432    /* Record of functions swapped out.  On restore, only need to swap
1433     * these functions back in.
1434     */
1435    void *Swapped[NUM_VERTEX_FORMAT_ENTRIES][2];
1436    GLuint SwapCount;
1437 };
1438
1439
1440 /*
1441  * The library context:
1442  */
1443 struct __GLcontextRec {
1444    /*
1445    ** Os related interfaces; these *must* be the first members of this
1446    ** structure, because they are exposed to the outside world (i.e. GLX
1447    ** extension).
1448    */
1449    __GLimports imports;
1450    __GLexports exports;
1451
1452    /* State possibly shared with other contexts in the address space */
1453    struct gl_shared_state *Shared;
1454
1455    /* API function pointer tables */
1456    struct _glapi_table *Save;   /* Display list save funcs */
1457    struct _glapi_table *Exec;   /* Execute funcs */
1458    struct _glapi_table *CurrentDispatch;  /* == Save or Exec !! */
1459
1460    GLboolean ExecPrefersFloat;  /* What preference for color conversion? */
1461    GLboolean SavePrefersFloat;
1462
1463    GLvisual Visual;
1464    GLframebuffer *DrawBuffer;   /* buffer for writing */
1465    GLframebuffer *ReadBuffer;   /* buffer for reading */
1466
1467    /* Driver function pointer table */
1468    struct dd_function_table Driver;
1469
1470    void *DriverCtx;     /* Points to device driver context/state */
1471    void *DriverMgrCtx;  /* Points to device driver manager (optional)*/
1472
1473    /* Core/Driver constants */
1474    struct gl_constants Const;
1475
1476    /* Modelview matrix and stack */
1477    GLmatrix ModelView;           /* current matrix, not stored on stack */
1478    GLuint ModelViewStackDepth;
1479    GLmatrix ModelViewStack[MAX_MODELVIEW_STACK_DEPTH - 1];
1480
1481    /* Projection matrix and stack */
1482    GLmatrix ProjectionMatrix;    /* current matrix, not stored on stack */
1483    GLuint ProjectionStackDepth;
1484    GLmatrix ProjectionStack[MAX_PROJECTION_STACK_DEPTH - 1];
1485
1486    /* Combined modelview and projection matrix */
1487    GLmatrix _ModelProjectMatrix;
1488
1489    /* Texture matrix and stack */
1490    GLmatrix TextureMatrix[MAX_TEXTURE_UNITS];
1491    GLuint TextureStackDepth[MAX_TEXTURE_UNITS];
1492    GLmatrix TextureStack[MAX_TEXTURE_UNITS][MAX_TEXTURE_STACK_DEPTH - 1];
1493
1494    /* Color matrix and stack */
1495    GLmatrix ColorMatrix;
1496    GLuint ColorStackDepth;
1497    GLmatrix ColorStack[MAX_COLOR_STACK_DEPTH - 1];
1498
1499    /* Display lists */
1500    GLuint CallDepth;            /* Current recursion calling depth */
1501    GLboolean ExecuteFlag;       /* Execute GL commands? */
1502    GLboolean CompileFlag;       /* Compile GL commands into display list? */
1503    Node *CurrentListPtr;        /* Head of list being compiled */
1504    GLuint CurrentListNum;       /* Number of the list being compiled */
1505    Node *CurrentBlock;          /* Pointer to current block of nodes */
1506    GLuint CurrentPos;           /* Index into current block of nodes */
1507
1508    /* Extensions */
1509    struct gl_extensions Extensions;
1510
1511    /* Renderer attribute stack */
1512    GLuint AttribStackDepth;
1513    struct gl_attrib_node *AttribStack[MAX_ATTRIB_STACK_DEPTH];
1514
1515    /* Renderer attribute groups */
1516    struct gl_accum_attrib       Accum;
1517    struct gl_colorbuffer_attrib Color;
1518    struct gl_current_attrib     Current;
1519    struct gl_depthbuffer_attrib Depth;
1520    struct gl_eval_attrib        Eval;
1521    struct gl_fog_attrib         Fog;
1522    struct gl_hint_attrib        Hint;
1523    struct gl_light_attrib       Light;
1524    struct gl_line_attrib        Line;
1525    struct gl_list_attrib        List;
1526    struct gl_pixel_attrib       Pixel;
1527    struct gl_point_attrib       Point;
1528    struct gl_polygon_attrib     Polygon;
1529    GLuint PolygonStipple[32];
1530    struct gl_scissor_attrib     Scissor;
1531    struct gl_stencil_attrib     Stencil;
1532    struct gl_texture_attrib     Texture;
1533    struct gl_transform_attrib   Transform;
1534    struct gl_viewport_attrib    Viewport;
1535
1536    /* Other attribute groups */
1537    struct gl_histogram_attrib   Histogram;
1538    struct gl_minmax_attrib      MinMax;
1539    struct gl_convolution_attrib Convolution1D;
1540    struct gl_convolution_attrib Convolution2D;
1541    struct gl_convolution_attrib Separable2D;
1542
1543    /* Client attribute stack */
1544    GLuint ClientAttribStackDepth;
1545    struct gl_attrib_node *ClientAttribStack[MAX_CLIENT_ATTRIB_STACK_DEPTH];
1546
1547    /* Client attribute groups */
1548    struct gl_array_attrib       Array;  /* Vertex arrays */
1549    struct gl_pixelstore_attrib  Pack;   /* Pixel packing */
1550    struct gl_pixelstore_attrib  Unpack; /* Pixel unpacking */
1551
1552    struct gl_evaluators EvalMap;   /* All evaluators */
1553    struct gl_feedback   Feedback;  /* Feedback */
1554    struct gl_selection  Select;    /* Selection */
1555
1556    struct gl_color_table ColorTable;       /* Pre-convolution */
1557    struct gl_color_table ProxyColorTable;  /* Pre-convolution */
1558    struct gl_color_table PostConvolutionColorTable;
1559    struct gl_color_table ProxyPostConvolutionColorTable;
1560    struct gl_color_table PostColorMatrixColorTable;
1561    struct gl_color_table ProxyPostColorMatrixColorTable;
1562
1563    GLenum ErrorValue;        /* Last error code */
1564    GLenum RenderMode;        /* either GL_RENDER, GL_SELECT, GL_FEEDBACK */
1565    GLuint NewState;          /* bitwise-or of _NEW_* flags */
1566
1567    /* Derived */
1568    GLuint _Enabled;           /* bitwise-or of ENABLE_* flags */
1569    GLuint _TriangleCaps;      /* bitwise-or of DD_* flags */
1570    GLuint _ImageTransferState;/* bitwise-or of IMAGE_*_BIT flags */
1571    GLfloat _EyeZDir[3];
1572    GLfloat _ModelViewInvScale;
1573    GLuint _NeedEyeCoords;
1574    GLuint _NeedNormals;    /* Are vertex normal vectors needed? */
1575
1576    struct gl_shine_tab *_ShineTable[2];  /* Active shine tables */
1577    struct gl_shine_tab *_ShineTabList;   /* Mru list of inactive shine tables */
1578
1579    struct gl_list_extensions listext; /* driver dlist extensions */
1580
1581
1582    GLboolean OcclusionResult;  /* GL_HP_occlusion_test */
1583    GLboolean OcclusionResultSaved;  /* GL_HP_occlusion_test */
1584
1585    /* Z buffer stuff */
1586    GLuint DepthMax;             /* Max depth buffer value */
1587    GLfloat DepthMaxF;           /* Float max depth buffer value */
1588    GLfloat MRD;                 /* minimum resolvable difference in Z values */
1589
1590    /* Should 3Dfx Glide driver catch signals? */
1591    GLboolean CatchSignals;
1592
1593    /* For debugging/development only */
1594    GLboolean NoRaster;
1595    GLboolean FirstTimeCurrent;
1596
1597    /* Dither disable via MESA_NO_DITHER env var */
1598    GLboolean NoDither;
1599
1600    GLboolean Rendering;
1601
1602 #if defined(MESA_TRACE)
1603    struct _glapi_table *TraceDispatch;
1604    trace_context_t     *TraceCtx;
1605 #else
1606    void *TraceDispatch;
1607    void *TraceCtx;
1608 #endif
1609
1610    /* Core tnl module support */
1611    struct gl_tnl_module TnlModule;
1612
1613    /* Hooks for module contexts.  These will eventually live
1614     * in the driver or elsewhere.
1615     */
1616    void *swrast_context;
1617    void *swsetup_context;
1618    void *swtnl_context;
1619    void *swtnl_im;
1620    void *acache_context;
1621    void *aelt_context;
1622 };
1623
1624
1625 /* The string names for GL_POINT, GL_LINE_LOOP, etc */
1626 extern const char *_mesa_prim_name[GL_POLYGON+4];
1627 extern GLenum gl_reduce_prim[];
1628
1629
1630 #ifdef MESA_DEBUG
1631 extern int MESA_VERBOSE;
1632 extern int MESA_DEBUG_FLAGS;
1633 #else
1634 # define MESA_VERBOSE 0
1635 # define MESA_DEBUG_FLAGS 0
1636 # ifndef NDEBUG
1637 #  define NDEBUG
1638 # endif
1639 #endif
1640
1641
1642 enum _verbose {
1643    VERBOSE_VARRAY          = 0x1,
1644    VERBOSE_TEXTURE         = 0x2,
1645    VERBOSE_IMMEDIATE       = 0x4,
1646    VERBOSE_PIPELINE        = 0x8,
1647    VERBOSE_DRIVER          = 0x10,
1648    VERBOSE_STATE           = 0x20,
1649    VERBOSE_API             = 0x40,
1650    VERBOSE_DISPLAY_LIST    = 0x200,
1651    VERBOSE_LIGHTING        = 0x400
1652 };
1653
1654
1655 enum _debug {
1656    DEBUG_ALWAYS_FLUSH          = 0x1
1657 };
1658
1659
1660
1661 #define Elements(x) sizeof(x)/sizeof(*(x))
1662
1663
1664
1665 /* Eventually let the driver specify what statechanges require a flush:
1666  */
1667 #define FLUSH_VERTICES(ctx, newstate)                   \
1668 do {                                                    \
1669    if (ctx->Driver.NeedFlush & FLUSH_STORED_VERTICES)   \
1670       ctx->Driver.FlushVertices(ctx, FLUSH_STORED_VERTICES);    \
1671    ctx->NewState |= newstate;                           \
1672 } while (0)
1673
1674 #define FLUSH_CURRENT(ctx, newstate)                    \
1675 do {                                                    \
1676    if (ctx->Driver.NeedFlush & FLUSH_UPDATE_CURRENT)    \
1677       ctx->Driver.FlushVertices(ctx, FLUSH_UPDATE_CURRENT);     \
1678    ctx->NewState |= newstate;                           \
1679 } while (0)
1680
1681 #define ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval)       \
1682 do {                                                            \
1683    if (ctx->Driver.CurrentExecPrimitive != GL_POLYGON+1) {      \
1684       _mesa_error( ctx, GL_INVALID_OPERATION, "begin/end" );    \
1685       return retval;                                            \
1686    }                                                            \
1687 } while (0)
1688
1689 #define ASSERT_OUTSIDE_BEGIN_END(ctx) \
1690    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx,)
1691
1692 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx) \
1693 do {                                            \
1694    ASSERT_OUTSIDE_BEGIN_END(ctx);               \
1695    FLUSH_VERTICES(ctx, 0);                      \
1696 } while (0)
1697
1698 #define ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH_WITH_RETVAL(ctx, retval)     \
1699 do {                                                                    \
1700    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, retval);                   \
1701    FLUSH_VERTICES(ctx, 0);                                              \
1702 } while (0)
1703
1704
1705 #ifdef DEBUG
1706
1707 #define RENDER_START(CTX)                       \
1708    do {                                         \
1709       assert(!(CTX)->Rendering);                \
1710       (CTX)->Rendering = GL_TRUE;               \
1711       if ((CTX)->Driver.RenderStart) {          \
1712          (*(CTX)->Driver.RenderStart)(CTX);     \
1713       }                                         \
1714    } while (0)
1715
1716 #define RENDER_FINISH(CTX)                      \
1717    do {                                         \
1718       assert((CTX)->Rendering);                 \
1719       (CTX)->Rendering = GL_FALSE;              \
1720       if ((CTX)->Driver.RenderFinish) {         \
1721          (*(CTX)->Driver.RenderFinish)(CTX);    \
1722       }                                         \
1723    } while (0)
1724
1725 #else
1726
1727 #define RENDER_START(CTX)                       \
1728    do {                                         \
1729       if ((CTX)->Driver.RenderStart) {          \
1730          (*(CTX)->Driver.RenderStart)(CTX);     \
1731       }                                         \
1732    } while (0)
1733
1734 #define RENDER_FINISH(CTX)                      \
1735    do {                                         \
1736       if ((CTX)->Driver.RenderFinish) {         \
1737          (*(CTX)->Driver.RenderFinish)(CTX);    \
1738       }                                         \
1739    } while (0)
1740
1741 #endif
1742
1743
1744 #endif /* TYPES_H */