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    if ( !tdfxCreateScreen( sPriv ) ) {
 125       tdfxDestroyScreen( sPriv );
 126       return GL_FALSE;
 127    }
 128
 129    return GL_TRUE;
 130 }
 131
 132
 133 static GLboolean
 134 tdfxCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 135                   __DRIdrawablePrivate *driDrawPriv,
 136                   const __GLcontextModes *mesaVis,
 137                   GLboolean isPixmap )
 138 {
 139    if (isPixmap) {
 140       return GL_FALSE; /* not implemented */
 141    }
 142    else {
 143       driDrawPriv->driverPrivate = (void *)
 144          _mesa_create_framebuffer( mesaVis,
 145                                    GL_FALSE, /* software depth buffer? */
 146                                    mesaVis->stencilBits > 0,
 147                                    mesaVis->accumRedBits > 0,
 148                                    GL_FALSE /* software alpha channel? */ );
 149       return (driDrawPriv->driverPrivate != NULL);
 150    }
 151 }
 152
 153
 154 static void
 155 tdfxDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 156 {
 157    _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
 158 }
 159
 160
 161 static void
 162 tdfxSwapBuffers( __DRIdrawablePrivate *driDrawPriv )
 163
 164 {
 165    GET_CURRENT_CONTEXT(ctx);
 166    tdfxContextPtr fxMesa = 0;
 167    GLframebuffer *mesaBuffer;
 168
 169    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 170       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
 171    }
 172
 173    mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
 174    if ( !mesaBuffer->Visual.doubleBufferMode )
 175       return; /* can't swap a single-buffered window */
 176
 177    /* If the current context's drawable matches the given drawable
 178     * we have to do a glFinish (per the GLX spec).
 179     */
 180    if ( ctx ) {
 181       __DRIdrawablePrivate *curDrawPriv;
 182       fxMesa = TDFX_CONTEXT(ctx);
 183       curDrawPriv = fxMesa->driContext->driDrawablePriv;
 184
 185       if ( curDrawPriv == driDrawPriv ) {
 186          /* swapping window bound to current context, flush first */
 187          _mesa_notifySwapBuffers( ctx );
 188          LOCK_HARDWARE( fxMesa );
 189       }
 190       else {
 191          /* find the fxMesa context previously bound to the window */
 192          fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
 193          if (!fxMesa)
 194             return;
 195          LOCK_HARDWARE( fxMesa );
 196          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 197          printf("SwapBuf SetState 1\n");
 198          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 199       }
 200    }
 201
 202 #ifdef STATS
 203    {
 204       int stalls;
 205       static int prevStalls = 0;
 206
 207       stalls = fxMesa->Glide.grFifoGetStalls();
 208
 209       fprintf( stderr, "%s:\n", __FUNCTION__ );
 210       if ( stalls != prevStalls ) {
 211          fprintf( stderr, "    %d stalls occurred\n",
 212                   stalls - prevStalls );
 213          prevStalls = stalls;
 214       }
 215       if ( fxMesa && fxMesa->texSwaps ) {
 216          fprintf( stderr, "    %d texture swaps occurred\n",
 217                   fxMesa->texSwaps );
 218          fxMesa->texSwaps = 0;
 219       }
 220    }
 221 #endif
 222
 223    if (fxMesa->scissoredClipRects) {
 224       /* restore clip rects without scissor box */
 225       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 226                                    driDrawPriv->w, driDrawPriv->h,
 227                                    driDrawPriv->numClipRects,
 228                                    driDrawPriv->pClipRects );
 229    }
 230
 231    fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
 232
 233    if (fxMesa->scissoredClipRects) {
 234       /* restore clip rects WITH scissor box */
 235       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 236                                    driDrawPriv->w, driDrawPriv->h,
 237                                    fxMesa->numClipRects, fxMesa->pClipRects );
 238    }
 239
 240
 241 #if 0
 242    {
 243       FxI32 result;
 244       do {
 245          FxI32 result;
 246          fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
 247       } while ( result > fxMesa->maxPendingSwapBuffers );
 248    }
 249 #endif
 250
 251    fxMesa->stats.swapBuffer++;
 252
 253    if (ctx) {
 254       if (ctx->DriverCtx != fxMesa) {
 255          fxMesa = TDFX_CONTEXT(ctx);
 256          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 257          printf("SwapBuf SetState 2\n");
 258          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 259       }
 260       UNLOCK_HARDWARE( fxMesa );
 261    }
 262 }
 263
 264
 265 static const struct __DriverAPIRec tdfxAPI = {
 266    .InitDriver      = tdfxInitDriver,
 267    .DestroyScreen   = tdfxDestroyScreen,
 268    .CreateContext   = tdfxCreateContext,
 269    .DestroyContext  = tdfxDestroyContext,
 270    .CreateBuffer    = tdfxCreateBuffer,
 271    .DestroyBuffer   = tdfxDestroyBuffer,
 272    .SwapBuffers     = tdfxSwapBuffers,
 273    .MakeCurrent     = tdfxMakeCurrent,
 274    .UnbindContext   = tdfxUnbindContext,
 275    .GetSwapInfo     = NULL,
 276    .GetMSC          = NULL,
 277    .WaitForMSC      = NULL,
 278    .WaitForSBC      = NULL,
 279    .SwapBuffersMSC  = NULL
 280 };
 281
 282 #ifdef USE_NEW_INTERFACE
 283 /*
 284  * new interface code, derived from radeon_screen.c
 285  * XXX this may still be wrong
 286  */
 287 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
 288
 289 static __GLcontextModes *tdfxFillInModes(unsigned pixel_bits,
 290                                          unsigned depth_bits,
 291                                          unsigned stencil_bits,
 292                                          GLboolean have_back_buffer)
 293 {
 294         __GLcontextModes *modes;
 295         __GLcontextModes *m;
 296         unsigned num_modes;
 297         unsigned vis[2] = { GLX_TRUE_COLOR, GLX_DIRECT_COLOR };
 298         unsigned deep = (depth_bits > 17);
 299         unsigned i, db, depth, accum, stencil;
 300
 301         /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 302          * enough to add support.  Basically, if a context is created with an
 303          * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 304          * will never be used.
 305          */
 306
 307         num_modes = (depth_bits == 16) ? 32 : 16;
 308
 309         modes = (*create_context_modes)(num_modes, sizeof(__GLcontextModes));
 310         m = modes;
 311
 312         for (i = 0; i <= 1; i++) {
 313             for (db = 0; db <= 1; db++) {
 314                 for (depth = 0; depth <= 1; depth++) {
 315                     for (accum = 0; accum <= 1; accum++) {
 316                         for (stencil = 0; stencil <= !deep; stencil++) {
 317                             if (deep) stencil = depth;
 318                             m->redBits          = deep ? 8 : 5;
 319                             m->greenBits        = deep ? 8 : 6;
 320                             m->blueBits         = deep ? 8 : 5;
 321                             m->alphaBits        = deep ? 8 : 0;
 322                             m->redMask          = deep ?0xFF000000 :0x0000F800;
 323                             m->greenMask        = deep ?0x00FF0000 :0x000007E0;
 324                             m->blueMask         = deep ?0x0000FF00 :0x0000001F;
 325                             m->alphaMask        = deep ? 0x000000FF : 0;
 326                             m->rgbBits          = m->redBits + m->greenBits +
 327                                                   m->blueBits + m->alphaBits;
 328                             m->accumRedBits     = accum ? 16 : 0;
 329                             m->accumGreenBits   = accum ? 16 : 0;
 330                             m->accumBlueBits    = accum ? 16 : 0;
 331                             m->accumAlphaBits   = accum ? 16 : 0;
 332                             m->stencilBits      = stencil ? 8 : 0;
 333                             m->depthBits        = deep
 334                                                   ? (depth ? 24 : 0)
 335                                                   : (depth ? 0 : depth_bits);
 336                             m->visualType       = i ? GLX_TRUE_COLOR
 337                                                     : GLX_DIRECT_COLOR;
 338                             m->renderType       = GLX_RGBA_BIT;
 339                             m->drawableType     = GLX_WINDOW_BIT;
 340                             m->rgbMode          = GL_TRUE;
 341                             m->doubleBufferMode = db ? GL_TRUE : GL_FALSE;
 342                             if (db)
 343                                 m->swapMethod = GLX_SWAP_UNDEFINED_OML;
 344                             m->visualRating     = ((stencil && !deep) || accum)
 345                                                   ? GLX_SLOW_CONFIG
 346                                                   : GLX_NONE;
 347                             m = m->next;
 348                             if (deep) stencil = 0;
 349                         }
 350                     }
 351                 }
 352             }
 353         }
 354
 355         return modes;
 356 }
 357
 358 /**
 359  * This is the bootstrap function for the driver.  libGL supplies all of the
 360  * requisite information about the system, and the driver initializes itself.
 361  * This routine also fills in the linked list pointed to by \c driver_modes
 362  * with the \c __GLcontextModes that the driver can support for windows or
 363  * pbuffers.
 364  *
 365  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 366  *         failure.
 367  */
 368 void * __driCreateNewScreen( __DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
 369                              const __GLcontextModes * modes,
 370                              const __DRIversion * ddx_version,
 371                              const __DRIversion * dri_version,
 372                              const __DRIversion * drm_version,
 373                              const __DRIframebuffer * frame_buffer,
 374                              drmAddress pSAREA, int fd,
 375                              int internal_api_version,
 376                              __GLcontextModes ** driver_modes )
 377 {
 378    __DRIscreenPrivate *psp;
 379    static const __DRIversion ddx_expected = { 1, 0, 0 };
 380    static const __DRIversion dri_expected = { 4, 0, 0 };
 381    static const __DRIversion drm_expected = { 1, 0, 0 };
 382
 383    if ( ! driCheckDriDdxDrmVersions2( "tdfx",
 384                                       dri_version, & dri_expected,
 385                                       ddx_version, & ddx_expected,
 386                                       drm_version, & drm_expected ) ) {
 387       return NULL;
 388    }
 389
 390    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 391                                   ddx_version, dri_version, drm_version,
 392                                   frame_buffer, pSAREA, fd,
 393                                   internal_api_version, &tdfxAPI);
 394
 395    create_context_modes = (PFNGLXCREATECONTEXTMODES)
 396       glXGetProcAddress((const GLubyte *)"__glXCreateContextModes");
 397
 398    if (create_context_modes != NULL) {
 399       /* divined from tdfx_dri.c, sketchy */
 400       TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
 401       int bpp = (dri_priv->cpp > 2) ? 24 : 16;
 402
 403       /* XXX i wish it was like this */
 404       /* bpp = dri_priv->bpp */
 405
 406       *driver_modes = tdfxFillInModes(bpp, (bpp == 16) ? 16 : 24,
 407                                 (bpp == 16) ? 0 : 8,
 408                                 (dri_priv->backOffset!=dri_priv->depthOffset));
 409    }
 410
 411    return (void *)psp;
 412 }
 413 #endif /* USE_NEW_INTERFACE */
 414
 415
 416 /*
 417  * This is the bootstrap function for the driver.
 418  * The __driCreateScreen name is the symbol that libGL.so fetches.
 419  * Return:  pointer to a __DRIscreenPrivate.
 420  */
 421 #if !defined(DRI_NEW_INTERFACE_ONLY)
 422 #ifndef _SOLO
 423 void *__driCreateScreen(Display *dpy, int scrn, __DRIscreen *psc,
 424                         int numConfigs, __GLXvisualConfig *config)
 425 {
 426    __DRIscreenPrivate *psp;
 427    psp = __driUtilCreateScreen(dpy, scrn, psc, numConfigs, config, &tdfxAPI);
 428    return (void *) psp;
 429 }
 430 #else
 431 void *__driCreateScreen(struct DRIDriverRec *driver,
 432                         struct DRIDriverContextRec *driverContext)
 433 {
 434    __DRIscreenPrivate *psp;
 435    psp = __driUtilCreateScreen(driver, driverContext, &tdfxAPI);
 436    return (void *) psp;
 437 }
 438 #endif
 439 #endif /* !defined(DRI_NEW_INTERFACE_ONLY) */