src/mesa/drivers/x11/xmesaP.h

   1 /*
   2  * Mesa 3-D graphics library
   3  * Version:  7.1
   4  *
   5  * Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice shall be included
  15  * in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  21  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25
  26 #ifndef XMESAP_H
  27 #define XMESAP_H
  28
  29
  30 #include "xmesa.h"
  31 #include "main/mtypes.h"
  32 #if defined(FX)
  33 #include "fxmesa.h"
  34 #include "xm_glide.h"
  35 #endif
  36 #ifdef XFree86Server
  37 #include "xm_image.h"
  38 #endif
  39
  40
  41 extern _glthread_Mutex _xmesa_lock;
  42
  43 extern XMesaBuffer XMesaBufferList;
  44
  45 /* for PF_8R8G8B24 pixel format */
  46 typedef struct {
  47    GLubyte b;
  48    GLubyte g;
  49    GLubyte r;
  50 } bgr_t;
  51
  52
  53 struct xmesa_renderbuffer;
  54
  55
  56 /* Function pointer for clearing color buffers */
  57 typedef void (*ClearFunc)( GLcontext *ctx, struct xmesa_renderbuffer *xrb,
  58                            GLint x, GLint y, GLint width, GLint height );
  59
  60
  61
  62
  63 /** Framebuffer pixel formats */
  64 enum pixel_format {
  65    PF_Index,            /**< Color Index mode */
  66    PF_Truecolor,        /**< TrueColor or DirectColor, any depth */
  67    PF_Dither_True,      /**< TrueColor with dithering */
  68    PF_8A8R8G8B,         /**< 32-bit TrueColor:  8-A, 8-R, 8-G, 8-B bits */
  69    PF_8A8B8G8R,         /**< 32-bit TrueColor:  8-A, 8-B, 8-G, 8-R bits */
  70    PF_8R8G8B,           /**< 32-bit TrueColor:  8-R, 8-G, 8-B bits */
  71    PF_8R8G8B24,         /**< 24-bit TrueColor:  8-R, 8-G, 8-B bits */
  72    PF_5R6G5B,           /**< 16-bit TrueColor:  5-R, 6-G, 5-B bits */
  73    PF_Dither,           /**< Color-mapped RGB with dither */
  74    PF_Lookup,           /**< Color-mapped RGB without dither */
  75    PF_HPCR,             /**< HP Color Recovery (ad@lms.be 30/08/95) */
  76    PF_1Bit,             /**< monochrome dithering of RGB */
  77    PF_Grayscale,        /**< Grayscale or StaticGray */
  78    PF_Dither_5R6G5B     /**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */
  79 };
  80
  81
  82 /**
  83  * Visual inforation, derived from GLvisual.
  84  * Basically corresponds to an XVisualInfo.
  85  */
  86 struct xmesa_visual {
  87    GLvisual mesa_visual;        /* Device independent visual parameters */
  88    XMesaDisplay *display;       /* The X11 display */
  89    int screen, visualID;
  90 #ifdef XFree86Server
  91    GLint ColormapEntries;
  92    GLint nplanes;
  93 #else
  94    XMesaVisualInfo visinfo;     /* X's visual info (pointer to private copy) */
  95    XVisualInfo *vishandle;      /* Only used in fakeglx.c */
  96 #endif
  97    GLint BitsPerPixel;          /* True bits per pixel for XImages */
  98
  99    GLboolean ximage_flag;       /* Use XImage for back buffer (not pixmap)? */
 100
 101    enum pixel_format dithered_pf;  /* Pixel format when dithering */
 102    enum pixel_format undithered_pf;/* Pixel format when not dithering */
 103
 104    GLfloat RedGamma;            /* Gamma values, 1.0 is default */
 105    GLfloat GreenGamma;
 106    GLfloat BlueGamma;
 107
 108    /* For PF_TRUECOLOR */
 109    GLint rshift, gshift, bshift;/* Pixel color component shifts */
 110    GLubyte Kernel[16];          /* Dither kernel */
 111    unsigned long RtoPixel[512]; /* RGB to pixel conversion */
 112    unsigned long GtoPixel[512];
 113    unsigned long BtoPixel[512];
 114    GLubyte PixelToR[256];       /* Pixel to RGB conversion */
 115    GLubyte PixelToG[256];
 116    GLubyte PixelToB[256];
 117
 118    /* For PF_HPCR */
 119    short       hpcr_rgbTbl[3][256];
 120    GLboolean   hpcr_clear_flag;
 121    GLubyte     hpcr_clear_ximage_pattern[2][16];
 122    XMesaImage *hpcr_clear_ximage;
 123    XMesaPixmap hpcr_clear_pixmap;
 124
 125    /* For PF_1BIT */
 126    int bitFlip;
 127 };
 128
 129
 130 /**
 131  * Context info, derived from GLcontext.
 132  * Basically corresponds to a GLXContext.
 133  */
 134 struct xmesa_context {
 135    GLcontext mesa;              /* the core library context (containment) */
 136    XMesaVisual xm_visual;       /* Describes the buffers */
 137    XMesaBuffer xm_buffer;       /* current span/point/line/triangle buffer */
 138
 139    XMesaDisplay *display;       /* == xm_visual->display */
 140    GLboolean swapbytes;         /* Host byte order != display byte order? */
 141    GLboolean direct;            /* Direct rendering context? */
 142
 143    enum pixel_format pixelformat;
 144
 145    GLubyte clearcolor[4];               /* current clearing color */
 146    unsigned long clearpixel;            /* current clearing pixel value */
 147 };
 148
 149
 150 /**
 151  * Types of X/GLX drawables we might render into.
 152  */
 153 typedef enum {
 154    WINDOW,          /* An X window */
 155    GLXWINDOW,       /* GLX window */
 156    PIXMAP,          /* GLX pixmap */
 157    PBUFFER          /* GLX Pbuffer */
 158 } BufferType;
 159
 160
 161 /** Values for db_mode: */
 162 /*@{*/
 163 #define BACK_PIXMAP     1
 164 #define BACK_XIMAGE     2
 165 /*@}*/
 166
 167
 168 /**
 169  * An xmesa_renderbuffer represents the back or front color buffer.
 170  * For the front color buffer:
 171  *    <drawable> is the X window
 172  * For the back color buffer:
 173  *    Either <ximage> or <pixmap> will be used, never both.
 174  * In any case, <drawable> always equals <pixmap>.
 175  * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
 176  * field.  We don't do that for the server-side GLcore module because
 177  * pixmaps and drawables are different and we'd need a bunch of casts.
 178  */
 179 struct xmesa_renderbuffer
 180 {
 181    struct gl_renderbuffer Base;  /* Base class */
 182
 183    XMesaBuffer Parent;  /**< The XMesaBuffer this renderbuffer belongs to */
 184    XMesaDrawable drawable;      /* Usually the X window ID */
 185    XMesaPixmap pixmap;  /* Back color buffer */
 186    XMesaImage *ximage;  /* The back buffer, if not using a Pixmap */
 187
 188    GLubyte *origin1;    /* used for PIXEL_ADDR1 macro */
 189    GLint width1;
 190    GLushort *origin2;   /* used for PIXEL_ADDR2 macro */
 191    GLint width2;
 192    GLubyte *origin3;    /* used for PIXEL_ADDR3 macro */
 193    GLint width3;
 194    GLuint *origin4;     /* used for PIXEL_ADDR4 macro */
 195    GLint width4;
 196
 197    GLint bottom;        /* used for FLIP macro, equals height - 1 */
 198
 199    ClearFunc clearFunc;
 200 };
 201
 202
 203 /**
 204  * Framebuffer information, derived from.
 205  * Basically corresponds to a GLXDrawable.
 206  */
 207 struct xmesa_buffer {
 208    GLframebuffer mesa_buffer;   /* depth, stencil, accum, etc buffers */
 209                                 /* This MUST BE FIRST! */
 210    GLboolean wasCurrent;        /* was ever the current buffer? */
 211    XMesaVisual xm_visual;       /* the X/Mesa visual */
 212
 213    XMesaDisplay *display;
 214    BufferType type;             /* window, pixmap, pbuffer or glxwindow */
 215
 216    GLboolean largestPbuffer;    /**< for pbuffers */
 217    GLboolean preservedContents; /**< for pbuffers */
 218
 219    struct xmesa_renderbuffer *frontxrb; /* front color renderbuffer */
 220    struct xmesa_renderbuffer *backxrb;  /* back color renderbuffer */
 221
 222    XMesaColormap cmap;          /* the X colormap */
 223
 224    unsigned long selectedEvents;/* for pbuffers only */
 225
 226    GLint db_mode;               /* 0 = single buffered */
 227                                 /* BACK_PIXMAP = use Pixmap for back buffer */
 228                                 /* BACK_XIMAGE = use XImage for back buffer */
 229    GLboolean swAlpha;
 230
 231    GLuint shm;                  /* X Shared Memory extension status:    */
 232                                 /*    0 = not available                 */
 233                                 /*    1 = XImage support available      */
 234                                 /*    2 = Pixmap support available too  */
 235 #if defined(USE_XSHM) && !defined(XFree86Server)
 236    XShmSegmentInfo shminfo;
 237 #endif
 238
 239    XMesaImage *rowimage;        /* Used for optimized span writing */
 240    XMesaPixmap stipple_pixmap;  /* For polygon stippling */
 241    XMesaGC stipple_gc;          /* For polygon stippling */
 242
 243    XMesaGC gc;                  /* scratch GC for span, line, tri drawing */
 244    XMesaGC cleargc;             /* GC for clearing the color buffer */
 245    XMesaGC swapgc;              /* GC for swapping the color buffers */
 246
 247    /* The following are here instead of in the XMesaVisual
 248     * because they depend on the window's colormap.
 249     */
 250
 251    /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
 252    unsigned long color_table[576];      /* RGB -> pixel value */
 253
 254    /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
 255    GLubyte pixel_to_r[65536];           /* pixel value -> red */
 256    GLubyte pixel_to_g[65536];           /* pixel value -> green */
 257    GLubyte pixel_to_b[65536];           /* pixel value -> blue */
 258
 259    /* Used to do XAllocColor/XFreeColors accounting: */
 260    int num_alloced;
 261 #if defined(XFree86Server)
 262    Pixel alloced_colors[256];
 263 #else
 264    unsigned long alloced_colors[256];
 265 #endif
 266
 267 #if defined( FX )
 268    /* For 3Dfx Glide only */
 269    GLboolean FXisHackUsable;    /* Can we render into window? */
 270    GLboolean FXwindowHack;      /* Are we rendering into a window? */
 271    fxMesaContext FXctx;
 272 #endif
 273
 274    /* GLX_EXT_texture_from_pixmap */
 275    GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
 276    GLint TextureFormat; /** GLX_TEXTURE_FORMAT_RGB_EXT, for example */
 277    GLint TextureMipmap; /** 0 or 1 */
 278
 279    struct xmesa_buffer *Next;   /* Linked list pointer: */
 280 };
 281
 282
 283 /**
 284  * If pixelformat==PF_TRUECOLOR:
 285  */
 286 #define PACK_TRUECOLOR( PIXEL, R, G, B )        \
 287    PIXEL = xmesa->xm_visual->RtoPixel[R]        \
 288          | xmesa->xm_visual->GtoPixel[G]        \
 289          | xmesa->xm_visual->BtoPixel[B];       \
 290
 291
 292 /**
 293  * If pixelformat==PF_TRUEDITHER:
 294  */
 295 #define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B )                 \
 296 {                                                               \
 297    int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)];    \
 298    PIXEL = xmesa->xm_visual->RtoPixel[(R)+d]                    \
 299          | xmesa->xm_visual->GtoPixel[(G)+d]                    \
 300          | xmesa->xm_visual->BtoPixel[(B)+d];                   \
 301 }
 302
 303
 304
 305 /**
 306  * If pixelformat==PF_8A8B8G8R:
 307  */
 308 #define PACK_8A8B8G8R( R, G, B, A )     \
 309         ( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
 310
 311
 312 /**
 313  * Like PACK_8A8B8G8R() but don't use alpha.  This is usually an acceptable
 314  * shortcut.
 315  */
 316 #define PACK_8B8G8R( R, G, B )   ( ((B) << 16) | ((G) << 8) | (R) )
 317
 318
 319
 320 /**
 321  * If pixelformat==PF_8R8G8B:
 322  */
 323 #define PACK_8R8G8B( R, G, B)    ( ((R) << 16) | ((G) << 8) | (B) )
 324
 325
 326 /**
 327  * If pixelformat==PF_5R6G5B:
 328  */
 329 #define PACK_5R6G5B( R, G, B)    ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
 330
 331
 332 /**
 333  * If pixelformat==PF_8A8R8G8B:
 334  */
 335 #define PACK_8A8R8G8B( R, G, B, A )     \
 336         ( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
 337
 338
 339
 340 /**
 341  * If pixelformat==PF_DITHER:
 342  *
 343  * Improved 8-bit RGB dithering code contributed by Bob Mercier
 344  * (mercier@hollywood.cinenet.net).  Thanks Bob!
 345  */
 346 #ifdef DITHER666
 347 # define DITH_R   6
 348 # define DITH_G   6
 349 # define DITH_B   6
 350 # define DITH_MIX(r,g,b)  (((r) * DITH_G + (g)) * DITH_B + (b))
 351 #else
 352 # define DITH_R 5
 353 # define DITH_G 9
 354 # define DITH_B 5
 355 # define DITH_MIX(r,g,b)  (((g) << 6) | ((b) << 3) | (r))
 356 #endif
 357 #define DITH_DX 4
 358 #define DITH_DY 4
 359 #define DITH_N  (DITH_DX * DITH_DY)
 360
 361 #define _dither(C, c, d)   (((unsigned)((DITH_N * (C - 1) + 1) * c + d)) >> 12)
 362
 363 #define MAXC    256
 364 extern const int xmesa_kernel8[DITH_DY * DITH_DX];
 365
 366 /* Dither for random X,Y */
 367 #define DITHER_SETUP                                            \
 368         int __d;                                                \
 369         unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;
 370
 371 #define DITHER( X, Y, R, G, B )                         \
 372         (__d = xmesa_kernel8[(((Y)&3)<<2) | ((X)&3)],   \
 373          ctable[DITH_MIX(_dither(DITH_R, (R), __d),     \
 374                          _dither(DITH_G, (G), __d),     \
 375                          _dither(DITH_B, (B), __d))])
 376
 377 /* Dither for random X, fixed Y */
 378 #define XDITHER_SETUP(Y)                                        \
 379         int __d;                                                \
 380         unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;     \
 381         const int *kernel = &xmesa_kernel8[ ((Y)&3) << 2 ];
 382
 383 #define XDITHER( X, R, G, B )                           \
 384         (__d = kernel[(X)&3],                           \
 385         ctable[DITH_MIX(_dither(DITH_R, (R), __d),      \
 386                         _dither(DITH_G, (G), __d),      \
 387                         _dither(DITH_B, (B), __d))])
 388
 389
 390
 391 /*
 392  * Dithering for flat-shaded triangles.  Precompute all 16 possible
 393  * pixel values given the triangle's RGB color.  Contributed by Martin Shenk.
 394  */
 395 #define FLAT_DITHER_SETUP( R, G, B )                                    \
 396         GLushort ditherValues[16];                                      \
 397         {                                                               \
 398            unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;  \
 399            int msdr = (DITH_N*((DITH_R)-1)+1) * (R);                    \
 400            int msdg = (DITH_N*((DITH_G)-1)+1) * (G);                    \
 401            int msdb = (DITH_N*((DITH_B)-1)+1) * (B);                    \
 402            int i;                                                       \
 403            for (i=0;i<16;i++) {                                         \
 404               int k = xmesa_kernel8[i];                                 \
 405               int j = DITH_MIX( (msdr+k)>>12, (msdg+k)>>12, (msdb+k)>>12 );\
 406               ditherValues[i] = (GLushort) ctable[j];                   \
 407            }                                                            \
 408         }
 409
 410 #define FLAT_DITHER_ROW_SETUP(Y)                                        \
 411         GLushort *ditherRow = ditherValues + ( ((Y)&3) << 2);
 412
 413 #define FLAT_DITHER(X)  ditherRow[(X)&3]
 414
 415
 416
 417 /**
 418  * If pixelformat==PF_LOOKUP:
 419  */
 420 #define _dither_lookup(C, c)   (((unsigned)((DITH_N * (C - 1) + 1) * c)) >> 12)
 421
 422 #define LOOKUP_SETUP                                            \
 423         unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table
 424
 425 #define LOOKUP( R, G, B )                               \
 426         ctable[DITH_MIX(_dither_lookup(DITH_R, (R)),    \
 427                         _dither_lookup(DITH_G, (G)),    \
 428                         _dither_lookup(DITH_B, (B)))]
 429
 430
 431 /**
 432  * If pixelformat==PF_HPCR:
 433  *
 434  *      HP Color Recovery dithering               (ad@lms.be 30/08/95)
 435  *      HP has on its 8-bit 700-series computers, a feature called
 436  *      'Color Recovery'.  This allows near 24-bit output (so they say).
 437  *      It is enabled by selecting the 8-bit  TrueColor  visual AND
 438  *      corresponding  colormap (see tkInitWindow) AND doing some special
 439  *      dither.
 440  */
 441 extern const short xmesa_HPCR_DRGB[3][2][16];
 442
 443 #define DITHER_HPCR( X, Y, R, G, B )                                       \
 444   ( ((xmesa->xm_visual->hpcr_rgbTbl[0][R] + xmesa_HPCR_DRGB[0][(Y)&1][(X)&15]) & 0xE0)     \
 445   |(((xmesa->xm_visual->hpcr_rgbTbl[1][G] + xmesa_HPCR_DRGB[1][(Y)&1][(X)&15]) & 0xE0)>>3) \
 446   | ((xmesa->xm_visual->hpcr_rgbTbl[2][B] + xmesa_HPCR_DRGB[2][(Y)&1][(X)&15])>>6)         \
 447   )
 448
 449
 450
 451 /**
 452  * If pixelformat==PF_1BIT:
 453  */
 454 extern const int xmesa_kernel1[16];
 455
 456 #define SETUP_1BIT  int bitFlip = xmesa->xm_visual->bitFlip
 457 #define DITHER_1BIT( X, Y, R, G, B )    \
 458         (( ((int)(R)+(int)(G)+(int)(B)) > xmesa_kernel1[(((Y)&3) << 2) | ((X)&3)] ) ^ bitFlip)
 459
 460
 461
 462 /**
 463  * If pixelformat==PF_GRAYSCALE:
 464  */
 465 #define GRAY_RGB( R, G, B )   XMESA_BUFFER(ctx->DrawBuffer)->color_table[((R) + (G) + (B))/3]
 466
 467
 468
 469 /**
 470  * Converts a GL window Y coord to an X window Y coord:
 471  */
 472 #define YFLIP(XRB, Y)  ((XRB)->bottom - (Y))
 473
 474
 475 /**
 476  * Return the address of a 1, 2 or 4-byte pixel in the buffer's XImage:
 477  * X==0 is left, Y==0 is bottom.
 478  */
 479 #define PIXEL_ADDR1(XRB, X, Y)  \
 480    ( (XRB)->origin1 - (Y) * (XRB)->width1 + (X) )
 481
 482 #define PIXEL_ADDR2(XRB, X, Y)  \
 483    ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
 484
 485 #define PIXEL_ADDR3(XRB, X, Y)  \
 486    ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
 487
 488 #define PIXEL_ADDR4(XRB, X, Y)  \
 489    ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
 490
 491
 492
 493 /*
 494  * External functions:
 495  */
 496
 497 extern struct xmesa_renderbuffer *
 498 xmesa_new_renderbuffer(GLcontext *ctx, GLuint name, const GLvisual *visual,
 499                        GLboolean backBuffer);
 500
 501 extern void
 502 xmesa_delete_framebuffer(struct gl_framebuffer *fb);
 503
 504 extern XMesaBuffer
 505 xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis);
 506
 507 extern unsigned long
 508 xmesa_color_to_pixel( GLcontext *ctx,
 509                       GLubyte r, GLubyte g, GLubyte b, GLubyte a,
 510                       GLuint pixelFormat );
 511
 512 extern void
 513 xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
 514                       GLuint *width, GLuint *height);
 515
 516 extern void
 517 xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
 518
 519 extern void
 520 xmesa_init_driver_functions( XMesaVisual xmvisual,
 521                              struct dd_function_table *driver );
 522
 523 extern void
 524 xmesa_update_state( GLcontext *ctx, GLbitfield new_state );
 525
 526 extern void
 527 xmesa_set_renderbuffer_funcs(struct xmesa_renderbuffer *xrb,
 528                              enum pixel_format pixelformat, GLint depth);
 529
 530 extern void
 531 xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
 532
 533
 534 /**
 535  * Using a function instead of an ordinary cast is safer.
 536  */
 537 static INLINE struct xmesa_renderbuffer *
 538 xmesa_renderbuffer(struct gl_renderbuffer *rb)
 539 {
 540    return (struct xmesa_renderbuffer *) rb;
 541 }
 542
 543
 544 /**
 545  * Return pointer to XMesaContext corresponding to a Mesa GLcontext.
 546  * Since we're using structure containment, it's just a cast!.
 547  */
 548 static INLINE XMesaContext
 549 XMESA_CONTEXT(GLcontext *ctx)
 550 {
 551    return (XMesaContext) ctx;
 552 }
 553
 554
 555 /**
 556  * Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer.
 557  * Since we're using structure containment, it's just a cast!.
 558  */
 559 static INLINE XMesaBuffer
 560 XMESA_BUFFER(GLframebuffer *b)
 561 {
 562    return (XMesaBuffer) b;
 563 }
 564
 565
 566 /* Plugged into the software rasterizer.  Try to use internal
 567  * swrast-style point, line and triangle functions.
 568  */
 569 extern void xmesa_choose_point( GLcontext *ctx );
 570 extern void xmesa_choose_line( GLcontext *ctx );
 571 extern void xmesa_choose_triangle( GLcontext *ctx );
 572
 573
 574 extern void xmesa_register_swrast_functions( GLcontext *ctx );
 575
 576
 577
 578 #define ENABLE_EXT_texure_compression_s3tc 0 /* SW texture compression */
 579
 580 #ifdef XFree86Server
 581 #define ENABLE_EXT_timer_query 0
 582 #elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 583 #define ENABLE_EXT_timer_query 1 /* should have 64-bit GLuint64EXT */
 584 #else
 585 #define ENABLE_EXT_timer_query 0 /* may not have 64-bit GLuint64EXT */
 586 #endif
 587
 588
 589 #define TEST_META_FUNCS 0
 590
 591
 592 #endif