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