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