src/mesa/drivers/dri/tdfx/tdfx_screen.c

   1 /* -*- mode: c; c-basic-offset: 3 -*-
   2  *
   3  * Copyright 2000 VA Linux Systems Inc., Fremont, California.
   4  *
   5  * 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 (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * VA LINUX SYSTEMS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  23  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26 /* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_screen.c,v 1.3 2002/02/22 21:45:03 dawes Exp $ */
  27
  28 /*
  29  * Original rewrite:
  30  *      Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
  31  *
  32  * Authors:
  33  *      Gareth Hughes <gareth@valinux.com>
  34  *
  35  */
  36
  37 #include "tdfx_dri.h"
  38 #include "tdfx_context.h"
  39 #include "tdfx_lock.h"
  40 #include "tdfx_vb.h"
  41 #include "tdfx_tris.h"
  42
  43
  44 #ifdef DEBUG_LOCKING
  45 char *prevLockFile = 0;
  46 int prevLockLine = 0;
  47 #endif
  48
  49 #ifndef TDFX_DEBUG
  50 int TDFX_DEBUG = (0
  51 /*                | DEBUG_ALWAYS_SYNC */
  52 /*                | DEBUG_VERBOSE_API */
  53 /*                | DEBUG_VERBOSE_MSG */
  54 /*                | DEBUG_VERBOSE_LRU */
  55 /*                | DEBUG_VERBOSE_DRI */
  56 /*                | DEBUG_VERBOSE_IOCTL */
  57 /*                | DEBUG_VERBOSE_2D */
  58    );
  59 #endif
  60
  61
  62
  63 static GLboolean
  64 tdfxCreateScreen( __DRIscreenPrivate *sPriv )
  65 {
  66    tdfxScreenPrivate *fxScreen;
  67    TDFXDRIPtr fxDRIPriv = (TDFXDRIPtr) sPriv->pDevPriv;
  68
  69    /* Allocate the private area */
  70    fxScreen = (tdfxScreenPrivate *) CALLOC( sizeof(tdfxScreenPrivate) );
  71    if ( !fxScreen )
  72       return GL_FALSE;
  73
  74    fxScreen->driScrnPriv = sPriv;
  75    sPriv->private = (void *) fxScreen;
  76
  77    fxScreen->regs.handle        = fxDRIPriv->regs;
  78    fxScreen->regs.size          = fxDRIPriv->regsSize;
  79    fxScreen->deviceID           = fxDRIPriv->deviceID;
  80    fxScreen->width              = fxDRIPriv->width;
  81    fxScreen->height             = fxDRIPriv->height;
  82    fxScreen->mem                = fxDRIPriv->mem;
  83    fxScreen->cpp                = fxDRIPriv->cpp;
  84    fxScreen->stride             = fxDRIPriv->stride;
  85    fxScreen->fifoOffset         = fxDRIPriv->fifoOffset;
  86    fxScreen->fifoSize           = fxDRIPriv->fifoSize;
  87    fxScreen->fbOffset           = fxDRIPriv->fbOffset;
  88    fxScreen->backOffset         = fxDRIPriv->backOffset;
  89    fxScreen->depthOffset        = fxDRIPriv->depthOffset;
  90    fxScreen->textureOffset      = fxDRIPriv->textureOffset;
  91    fxScreen->textureSize        = fxDRIPriv->textureSize;
  92    fxScreen->sarea_priv_offset  = fxDRIPriv->sarea_priv_offset;
  93
  94    if ( drmMap( sPriv->fd, fxScreen->regs.handle,
  95                 fxScreen->regs.size, &fxScreen->regs.map ) ) {
  96       return GL_FALSE;
  97    }
  98
  99    return GL_TRUE;
 100 }
 101
 102
 103 static void
 104 tdfxDestroyScreen( __DRIscreenPrivate *sPriv )
 105 {
 106    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 107
 108    if ( fxScreen ) {
 109       drmUnmap( fxScreen->regs.map, fxScreen->regs.size );
 110
 111       FREE( fxScreen );
 112       sPriv->private = NULL;
 113    }
 114 }
 115
 116
 117 static GLboolean
 118 tdfxInitDriver( __DRIscreenPrivate *sPriv )
 119 {
 120    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 121       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)sPriv );
 122    }
 123
 124    /* Check the DRI externsion version */
 125    if ( sPriv->driMajor != 4 || sPriv->driMinor < 0 ) {
 126        __driUtilMessage( "tdfx DRI driver expected DRI version 4.0.x "
 127                          "but got version %d.%d.%d",
 128                          sPriv->driMajor, sPriv->driMinor, sPriv->driPatch );
 129        return GL_FALSE;
 130    }
 131
 132    /* Check that the DDX driver version is compatible */
 133    if ( sPriv->ddxMajor != 1 ||
 134         sPriv->ddxMinor < 0 ) {
 135       __driUtilMessage(
 136                "3dfx DRI driver expected DDX driver version 1.0.x "
 137                "but got version %d.%d.%d",
 138                sPriv->ddxMajor, sPriv->ddxMinor, sPriv->ddxPatch );
 139       return GL_FALSE;
 140    }
 141
 142    /* Check that the DRM driver version is compatible */
 143    if ( sPriv->drmMajor != 1 ||
 144         sPriv->drmMinor < 0 ) {
 145       __driUtilMessage(
 146                "3dfx DRI driver expected DRM driver version 1.0.x "
 147                "but got version %d.%d.%d",
 148                sPriv->drmMajor, sPriv->drmMinor, sPriv->drmPatch );
 149       return GL_FALSE;
 150    }
 151
 152    if ( !tdfxCreateScreen( sPriv ) ) {
 153       tdfxDestroyScreen( sPriv );
 154       return GL_FALSE;
 155    }
 156
 157    return GL_TRUE;
 158 }
 159
 160
 161 static GLboolean
 162 tdfxCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 163                   __DRIdrawablePrivate *driDrawPriv,
 164                   const __GLcontextModes *mesaVis,
 165                   GLboolean isPixmap )
 166 {
 167    if (isPixmap) {
 168       return GL_FALSE; /* not implemented */
 169    }
 170    else {
 171       driDrawPriv->driverPrivate = (void *)
 172          _mesa_create_framebuffer( mesaVis,
 173                                    GL_FALSE, /* software depth buffer? */
 174                                    mesaVis->stencilBits > 0,
 175                                    mesaVis->accumRedBits > 0,
 176                                    GL_FALSE /* software alpha channel? */ );
 177       return (driDrawPriv->driverPrivate != NULL);
 178    }
 179 }
 180
 181
 182 static void
 183 tdfxDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 184 {
 185    _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
 186 }
 187
 188
 189 static void
 190 tdfxSwapBuffers( __DRIdrawablePrivate *driDrawPriv )
 191
 192 {
 193    GET_CURRENT_CONTEXT(ctx);
 194    tdfxContextPtr fxMesa = 0;
 195    GLframebuffer *mesaBuffer;
 196
 197    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 198       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
 199    }
 200
 201    mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
 202    if ( !mesaBuffer->Visual.doubleBufferMode )
 203       return; /* can't swap a single-buffered window */
 204
 205    /* If the current context's drawable matches the given drawable
 206     * we have to do a glFinish (per the GLX spec).
 207     */
 208    if ( ctx ) {
 209       __DRIdrawablePrivate *curDrawPriv;
 210       fxMesa = TDFX_CONTEXT(ctx);
 211       curDrawPriv = fxMesa->driContext->driDrawablePriv;
 212
 213       if ( curDrawPriv == driDrawPriv ) {
 214          /* swapping window bound to current context, flush first */
 215          _mesa_notifySwapBuffers( ctx );
 216          LOCK_HARDWARE( fxMesa );
 217       }
 218       else {
 219          /* find the fxMesa context previously bound to the window */
 220          fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
 221          if (!fxMesa)
 222             return;
 223          LOCK_HARDWARE( fxMesa );
 224          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 225          printf("SwapBuf SetState 1\n");
 226          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 227       }
 228    }
 229
 230 #ifdef STATS
 231    {
 232       int stalls;
 233       static int prevStalls = 0;
 234
 235       stalls = fxMesa->Glide.grFifoGetStalls();
 236
 237       fprintf( stderr, "%s:\n", __FUNCTION__ );
 238       if ( stalls != prevStalls ) {
 239          fprintf( stderr, "    %d stalls occurred\n",
 240                   stalls - prevStalls );
 241          prevStalls = stalls;
 242       }
 243       if ( fxMesa && fxMesa->texSwaps ) {
 244          fprintf( stderr, "    %d texture swaps occurred\n",
 245                   fxMesa->texSwaps );
 246          fxMesa->texSwaps = 0;
 247       }
 248    }
 249 #endif
 250
 251    if (fxMesa->scissoredClipRects) {
 252       /* restore clip rects without scissor box */
 253       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 254                                    driDrawPriv->w, driDrawPriv->h,
 255                                    driDrawPriv->numClipRects,
 256                                    driDrawPriv->pClipRects );
 257    }
 258
 259    fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
 260
 261    if (fxMesa->scissoredClipRects) {
 262       /* restore clip rects WITH scissor box */
 263       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 264                                    driDrawPriv->w, driDrawPriv->h,
 265                                    fxMesa->numClipRects, fxMesa->pClipRects );
 266    }
 267
 268
 269 #if 0
 270    {
 271       FxI32 result;
 272       do {
 273          FxI32 result;
 274          fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
 275       } while ( result > fxMesa->maxPendingSwapBuffers );
 276    }
 277 #endif
 278
 279    fxMesa->stats.swapBuffer++;
 280
 281    if (ctx) {
 282       if (ctx->DriverCtx != fxMesa) {
 283          fxMesa = TDFX_CONTEXT(ctx);
 284          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 285          printf("SwapBuf SetState 2\n");
 286          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 287       }
 288       UNLOCK_HARDWARE( fxMesa );
 289    }
 290 }
 291
 292
 293 static GLboolean
 294 tdfxOpenCloseFullScreen(__DRIcontextPrivate *driContextPriv)
 295 {
 296     return GL_TRUE;
 297 }
 298
 299
 300 static const struct __DriverAPIRec tdfxAPI = {
 301    .InitDriver      = tdfxInitDriver,
 302    .DestroyScreen   = tdfxDestroyScreen,
 303    .CreateContext   = tdfxCreateContext,
 304    .DestroyContext  = tdfxDestroyContext,
 305    .CreateBuffer    = tdfxCreateBuffer,
 306    .DestroyBuffer   = tdfxDestroyBuffer,
 307    .SwapBuffers     = tdfxSwapBuffers,
 308    .MakeCurrent     = tdfxMakeCurrent,
 309    .UnbindContext   = tdfxUnbindContext,
 310    .OpenFullScreen  = tdfxOpenCloseFullScreen,
 311    .CloseFullScreen = tdfxOpenCloseFullScreen,
 312    .GetSwapInfo     = NULL,
 313    .GetMSC          = NULL,
 314    .WaitForMSC      = NULL,
 315    .WaitForSBC      = NULL,
 316    .SwapBuffersMSC  = NULL
 317 };
 318
 319 #ifdef USE_NEW_INTERFACE
 320 /*
 321  * new interface code, derived from radeon_screen.c
 322  * XXX this may still be wrong
 323  */
 324 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 325
 326 static __GLcontextModes *tdfxFillInModes(unsigned pixel_bits,
 327                                          unsigned depth_bits,
 328                                          unsigned stencil_bits,
 329                                          GLboolean have_back_buffer)
 330 {
 331         __GLcontextModes *modes;
 332         __GLcontextModes *m;
 333         unsigned num_modes;
 334         unsigned vis[2] = { GLX_TRUE_COLOR, GLX_DIRECT_COLOR };
 335         unsigned deep = (depth_bits > 17);
 336         unsigned i, db, depth, accum, stencil;
 337
 338         /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 339          * enough to add support.  Basically, if a context is created with an
 340          * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 341          * will never be used.
 342          */
 343
 344         num_modes = (depth_bits == 16) ? 32 : 16;
 345
 346         modes = (*create_context_modes)(num_modes, sizeof(__GLcontextModes));
 347         m = modes;
 348
 349         for (i = 0; i <= 1; i++) {
 350             for (db = 0; db <= 1; db++) {
 351                 for (depth = 0; depth <= 1; depth++) {
 352                     for (accum = 0; accum <= 1; accum++) {
 353                         for (stencil = 0; stencil <= !deep; stencil++) {
 354                             if (deep) stencil = depth;
 355                             m->redBits          = deep ? 8 : 5;
 356                             m->greenBits        = deep ? 8 : 6;
 357                             m->blueBits         = deep ? 8 : 5;
 358                             m->alphaBits        = deep ? 8 : 0;
 359                             m->redMask          = deep ?0xFF000000 :0x0000F800;
 360                             m->greenMask        = deep ?0x00FF0000 :0x000007E0;
 361                             m->blueMask         = deep ?0x0000FF00 :0x0000001F;
 362                             m->alphaMask        = deep ? 0x000000FF : 0;
 363                             m->rgbBits          = m->redBits + m->greenBits +
 364                                                   m->blueBits + m->alphaBits;
 365                             m->accumRedBits     = accum ? 16 : 0;
 366                             m->accumGreenBits   = accum ? 16 : 0;
 367                             m->accumBlueBits    = accum ? 16 : 0;
 368                             m->accumAlphaBits   = accum ? 16 : 0;
 369                             m->stencilBits      = stencil ? 8 : 0;
 370                             m->depthBits        = deep
 371                                                   ? (depth ? 24 : 0)
 372                                                   : (depth ? 0 : depth_bits);
 373                             m->visualType       = i ? GLX_TRUE_COLOR
 374                                                     : GLX_DIRECT_COLOR;
 375                             m->renderType       = GLX_RGBA_BIT;
 376                             m->drawableType     = GLX_WINDOW_BIT;
 377                             m->rgbMode          = GL_TRUE;
 378                             m->doubleBufferMode = db ? GL_TRUE : GL_FALSE;
 379                             if (db)
 380                                 m->swapMethod = GLX_SWAP_UNDEFINED_OML;
 381                             m->visualRating     = ((stencil && !deep) || accum)
 382                                                   ? GLX_SLOW_CONFIG
 383                                                   : GLX_NONE;
 384                             m = m->next;
 385                             if (deep) stencil = 0;
 386                         }
 387                     }
 388                 }
 389             }
 390         }
 391
 392         return modes;
 393 }
 394
 395 /**
 396  * This is the bootstrap function for the driver.  libGL supplies all of the
 397  * requisite information about the system, and the driver initializes itself.
 398  * This routine also fills in the linked list pointed to by \c driver_modes
 399  * with the \c __GLcontextModes that the driver can support for windows or
 400  * pbuffers.
 401  *
 402  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 403  *         failure.
 404  */
 405 void * __driCreateNewScreen( __DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
 406                              const __GLcontextModes * modes,
 407                              const __DRIversion * ddx_version,
 408                              const __DRIversion * dri_version,
 409                              const __DRIversion * drm_version,
 410                              const __DRIframebuffer * frame_buffer,
 411                              drmAddress pSAREA, int fd,
 412                              int internal_api_version,
 413                              __GLcontextModes ** driver_modes )
 414 {
 415    __DRIscreenPrivate *psp;
 416
 417    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 418                                   ddx_version, dri_version, drm_version,
 419                                   frame_buffer, pSAREA, fd,
 420                                   internal_api_version, &tdfxAPI);
 421
 422    create_context_modes = (PFNGLXCREATECONTEXTMODES)
 423       glXGetProcAddress((const GLubyte *)"__glXCreateContextModes");
 424
 425    if (create_context_modes != NULL) {
 426       /* divined from tdfx_dri.c, sketchy */
 427       TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
 428       int bpp = (dri_priv->cpp > 2) ? 24 : 16;
 429
 430       /* XXX i wish it was like this */
 431       /* bpp = dri_priv->bpp */
 432
 433       *driver_modes = tdfxFillInModes(bpp, (bpp == 16) ? 16 : 24,
 434                                 (bpp == 16) ? 0 : 8,
 435                                 (dri_priv->backOffset!=dri_priv->depthOffset));
 436    }
 437
 438    return (void *)psp;
 439 }
 440 #endif /* USE_NEW_INTERFACE */
 441
 442
 443 /*
 444  * This is the bootstrap function for the driver.
 445  * The __driCreateScreen name is the symbol that libGL.so fetches.
 446  * Return:  pointer to a __DRIscreenPrivate.
 447  */
 448 #if !defined(DRI_NEW_INTERFACE_ONLY)
 449 #ifndef _SOLO
 450 void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
 451                         int numConfigs, __GLXvisualConfig *config)
 452 {
 453    __DRIscreenPrivate *psp;
 454    psp = __driUtilCreateScreen(dpy, scrn, psc, numConfigs, config, &tdfxAPI);
 455    return (void *) psp;
 456 }
 457 #else
 458 void *__driCreateScreen(struct DRIDriverRec *driver,
 459                         struct DRIDriverContextRec *driverContext)
 460 {
 461    __DRIscreenPrivate *psp;
 462    psp = __driUtilCreateScreen(driver, driverContext, &tdfxAPI);
 463    return (void *) psp;
 464 }
 465 #endif
 466 #endif /* !defined(DRI_NEW_INTERFACE_ONLY) */