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_span.h"
  42 #include "tdfx_tris.h"
  43
  44 #include "framebuffer.h"
  45 #include "renderbuffer.h"
  46 #include "xmlpool.h"
  47
  48 #include "utils.h"
  49
  50 #ifdef DEBUG_LOCKING
  51 char *prevLockFile = 0;
  52 int prevLockLine = 0;
  53 #endif
  54
  55 #ifndef TDFX_DEBUG
  56 int TDFX_DEBUG = 0;
  57 #endif
  58
  59 PUBLIC const char __driConfigOptions[] =
  60 DRI_CONF_BEGIN
  61     DRI_CONF_SECTION_DEBUG
  62         DRI_CONF_NO_RAST(false)
  63     DRI_CONF_SECTION_END
  64 DRI_CONF_END;
  65
  66 static const GLuint __driNConfigOptions = 1;
  67
  68 extern const struct dri_extension card_extensions[];
  69 extern const struct dri_extension napalm_extensions[];
  70
  71 static GLboolean
  72 tdfxCreateScreen( __DRIscreenPrivate *sPriv )
  73 {
  74    tdfxScreenPrivate *fxScreen;
  75    TDFXDRIPtr fxDRIPriv = (TDFXDRIPtr) sPriv->pDevPriv;
  76    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
  77      (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
  78
  79    if (sPriv->devPrivSize != sizeof(TDFXDRIRec)) {
  80       fprintf(stderr,"\nERROR!  sizeof(TDFXDRIRec) does not match passed size from device driver\n");
  81       return GL_FALSE;
  82    }
  83
  84    /* Allocate the private area */
  85    fxScreen = (tdfxScreenPrivate *) CALLOC( sizeof(tdfxScreenPrivate) );
  86    if ( !fxScreen )
  87       return GL_FALSE;
  88
  89    /* parse information in __driConfigOptions */
  90    driParseOptionInfo (&fxScreen->optionCache,
  91                        __driConfigOptions, __driNConfigOptions);
  92
  93    fxScreen->driScrnPriv = sPriv;
  94    sPriv->private = (void *) fxScreen;
  95
  96    fxScreen->regs.handle        = fxDRIPriv->regs;
  97    fxScreen->regs.size          = fxDRIPriv->regsSize;
  98    fxScreen->deviceID           = fxDRIPriv->deviceID;
  99    fxScreen->width              = fxDRIPriv->width;
 100    fxScreen->height             = fxDRIPriv->height;
 101    fxScreen->mem                = fxDRIPriv->mem;
 102    fxScreen->cpp                = fxDRIPriv->cpp;
 103    fxScreen->stride             = fxDRIPriv->stride;
 104    fxScreen->fifoOffset         = fxDRIPriv->fifoOffset;
 105    fxScreen->fifoSize           = fxDRIPriv->fifoSize;
 106    fxScreen->fbOffset           = fxDRIPriv->fbOffset;
 107    fxScreen->backOffset         = fxDRIPriv->backOffset;
 108    fxScreen->depthOffset        = fxDRIPriv->depthOffset;
 109    fxScreen->textureOffset      = fxDRIPriv->textureOffset;
 110    fxScreen->textureSize        = fxDRIPriv->textureSize;
 111    fxScreen->sarea_priv_offset  = fxDRIPriv->sarea_priv_offset;
 112
 113    if ( drmMap( sPriv->fd, fxScreen->regs.handle,
 114                 fxScreen->regs.size, &fxScreen->regs.map ) ) {
 115       return GL_FALSE;
 116    }
 117
 118    if (glx_enable_extension != NULL) {
 119       (*glx_enable_extension)(sPriv->psc, "GLX_SGI_make_current_read");
 120    }
 121
 122    return GL_TRUE;
 123 }
 124
 125
 126 static void
 127 tdfxDestroyScreen( __DRIscreenPrivate *sPriv )
 128 {
 129    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 130
 131    if (!fxScreen)
 132       return;
 133
 134    drmUnmap( fxScreen->regs.map, fxScreen->regs.size );
 135
 136    /* free all option information */
 137    driDestroyOptionInfo (&fxScreen->optionCache);
 138
 139    FREE( fxScreen );
 140    sPriv->private = NULL;
 141 }
 142
 143
 144 static GLboolean
 145 tdfxInitDriver( __DRIscreenPrivate *sPriv )
 146 {
 147    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 148       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)sPriv );
 149    }
 150
 151    if ( !tdfxCreateScreen( sPriv ) ) {
 152       tdfxDestroyScreen( sPriv );
 153       return GL_FALSE;
 154    }
 155
 156    return GL_TRUE;
 157 }
 158
 159
 160 static GLboolean
 161 tdfxCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 162                   __DRIdrawablePrivate *driDrawPriv,
 163                   const __GLcontextModes *mesaVis,
 164                   GLboolean isPixmap )
 165 {
 166    tdfxScreenPrivate *screen = (tdfxScreenPrivate *) driScrnPriv->private;
 167
 168    if (isPixmap) {
 169       return GL_FALSE; /* not implemented */
 170    }
 171    else {
 172       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 173
 174       {
 175          driRenderbuffer *frontRb
 176             = driNewRenderbuffer(GL_RGBA, NULL, screen->cpp,
 177                                  screen->fbOffset, screen->width, driDrawPriv);
 178          tdfxSetSpanFunctions(frontRb, mesaVis);
 179          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 180       }
 181
 182       if (mesaVis->doubleBufferMode) {
 183          driRenderbuffer *backRb
 184             = driNewRenderbuffer(GL_RGBA, NULL, screen->cpp,
 185                                  screen->backOffset, screen->width,
 186                                  driDrawPriv);
 187          tdfxSetSpanFunctions(backRb, mesaVis);
 188          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 189          backRb->backBuffer = GL_TRUE;
 190       }
 191
 192       if (mesaVis->depthBits == 16) {
 193          driRenderbuffer *depthRb
 194             = driNewRenderbuffer(GL_DEPTH_COMPONENT16, NULL, screen->cpp,
 195                                  screen->depthOffset, screen->width,
 196                                  driDrawPriv);
 197          tdfxSetSpanFunctions(depthRb, mesaVis);
 198          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 199       }
 200       else if (mesaVis->depthBits == 24) {
 201          driRenderbuffer *depthRb
 202             = driNewRenderbuffer(GL_DEPTH_COMPONENT24, NULL, screen->cpp,
 203                                  screen->depthOffset, screen->width,
 204                                  driDrawPriv);
 205          tdfxSetSpanFunctions(depthRb, mesaVis);
 206          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 207       }
 208
 209       if (mesaVis->stencilBits > 0) {
 210          driRenderbuffer *stencilRb
 211             = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT, NULL, screen->cpp,
 212                                  screen->depthOffset, screen->width,
 213                                  driDrawPriv);
 214          tdfxSetSpanFunctions(stencilRb, mesaVis);
 215          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 216       }
 217
 218       _mesa_add_soft_renderbuffers(fb,
 219                                    GL_FALSE, /* color */
 220                                    GL_FALSE, /* depth */
 221                                    GL_FALSE, /*swStencil,*/
 222                                    mesaVis->accumRedBits > 0,
 223                                    GL_FALSE, /* alpha */
 224                                    GL_FALSE /* aux */);
 225       driDrawPriv->driverPrivate = (void *) fb;
 226
 227       return (driDrawPriv->driverPrivate != NULL);
 228    }
 229 }
 230
 231
 232 static void
 233 tdfxDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 234 {
 235    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 236 }
 237
 238
 239 static void
 240 tdfxSwapBuffers( __DRIdrawablePrivate *driDrawPriv )
 241
 242 {
 243    GET_CURRENT_CONTEXT(ctx);
 244    tdfxContextPtr fxMesa = 0;
 245    GLframebuffer *mesaBuffer;
 246
 247    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 248       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
 249    }
 250
 251    mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
 252    if ( !mesaBuffer->Visual.doubleBufferMode )
 253       return; /* can't swap a single-buffered window */
 254
 255    /* If the current context's drawable matches the given drawable
 256     * we have to do a glFinish (per the GLX spec).
 257     */
 258    if ( ctx ) {
 259       __DRIdrawablePrivate *curDrawPriv;
 260       fxMesa = TDFX_CONTEXT(ctx);
 261       curDrawPriv = fxMesa->driContext->driDrawablePriv;
 262
 263       if ( curDrawPriv == driDrawPriv ) {
 264          /* swapping window bound to current context, flush first */
 265          _mesa_notifySwapBuffers( ctx );
 266          LOCK_HARDWARE( fxMesa );
 267       }
 268       else {
 269          /* find the fxMesa context previously bound to the window */
 270          fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
 271          if (!fxMesa)
 272             return;
 273          LOCK_HARDWARE( fxMesa );
 274          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 275 #ifdef DEBUG
 276          printf("SwapBuf SetState 1\n");
 277 #endif
 278          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 279       }
 280    }
 281
 282 #ifdef STATS
 283    {
 284       int stalls;
 285       static int prevStalls = 0;
 286
 287       stalls = fxMesa->Glide.grFifoGetStalls();
 288
 289       fprintf( stderr, "%s:\n", __FUNCTION__ );
 290       if ( stalls != prevStalls ) {
 291          fprintf( stderr, "    %d stalls occurred\n",
 292                   stalls - prevStalls );
 293          prevStalls = stalls;
 294       }
 295       if ( fxMesa && fxMesa->texSwaps ) {
 296          fprintf( stderr, "    %d texture swaps occurred\n",
 297                   fxMesa->texSwaps );
 298          fxMesa->texSwaps = 0;
 299       }
 300    }
 301 #endif
 302
 303    if (fxMesa->scissoredClipRects) {
 304       /* restore clip rects without scissor box */
 305       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 306                                    driDrawPriv->w, driDrawPriv->h,
 307                                    driDrawPriv->numClipRects,
 308                                    driDrawPriv->pClipRects );
 309    }
 310
 311    fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
 312
 313    if (fxMesa->scissoredClipRects) {
 314       /* restore clip rects WITH scissor box */
 315       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 316                                    driDrawPriv->w, driDrawPriv->h,
 317                                    fxMesa->numClipRects, fxMesa->pClipRects );
 318    }
 319
 320
 321 #if 0
 322    {
 323       FxI32 result;
 324       do {
 325          FxI32 result;
 326          fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
 327       } while ( result > fxMesa->maxPendingSwapBuffers );
 328    }
 329 #endif
 330
 331    fxMesa->stats.swapBuffer++;
 332
 333    if (ctx) {
 334       if (ctx->DriverCtx != fxMesa) {
 335          fxMesa = TDFX_CONTEXT(ctx);
 336          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 337 #ifdef DEBUG
 338          printf("SwapBuf SetState 2\n");
 339 #endif
 340          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 341       }
 342       UNLOCK_HARDWARE( fxMesa );
 343    }
 344 }
 345
 346
 347 static const struct __DriverAPIRec tdfxAPI = {
 348    .DestroyScreen   = tdfxDestroyScreen,
 349    .CreateContext   = tdfxCreateContext,
 350    .DestroyContext  = tdfxDestroyContext,
 351    .CreateBuffer    = tdfxCreateBuffer,
 352    .DestroyBuffer   = tdfxDestroyBuffer,
 353    .SwapBuffers     = tdfxSwapBuffers,
 354    .MakeCurrent     = tdfxMakeCurrent,
 355    .UnbindContext   = tdfxUnbindContext,
 356    .GetSwapInfo     = NULL,
 357    .GetMSC          = NULL,
 358    .WaitForMSC      = NULL,
 359    .WaitForSBC      = NULL,
 360    .SwapBuffersMSC  = NULL
 361 };
 362
 363
 364 static __GLcontextModes *tdfxFillInModes(unsigned pixel_bits,
 365                                          unsigned depth_bits,
 366                                          unsigned stencil_bits,
 367                                          GLboolean have_back_buffer)
 368 {
 369         __GLcontextModes *modes;
 370         __GLcontextModes *m;
 371         unsigned num_modes;
 372         unsigned vis[2] = { GLX_TRUE_COLOR, GLX_DIRECT_COLOR };
 373         unsigned deep = (depth_bits > 17);
 374         unsigned i, db, depth, accum, stencil;
 375
 376         /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 377          * enough to add support.  Basically, if a context is created with an
 378          * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 379          * will never be used.
 380          */
 381
 382         num_modes = (depth_bits == 16) ? 32 : 16;
 383
 384         modes = (*dri_interface->createContextModes)(num_modes, sizeof(__GLcontextModes));
 385         m = modes;
 386
 387         for (i = 0; i <= 1; i++) {
 388             for (db = 0; db <= 1; db++) {
 389                 for (depth = 0; depth <= 1; depth++) {
 390                     for (accum = 0; accum <= 1; accum++) {
 391                         for (stencil = 0; stencil <= !deep; stencil++) {
 392                             if (deep) stencil = depth;
 393                             m->redBits          = deep ? 8 : 5;
 394                             m->greenBits        = deep ? 8 : 6;
 395                             m->blueBits         = deep ? 8 : 5;
 396                             m->alphaBits        = deep ? 8 : 0;
 397                             m->redMask          = deep ?0xFF000000 :0x0000F800;
 398                             m->greenMask        = deep ?0x00FF0000 :0x000007E0;
 399                             m->blueMask         = deep ?0x0000FF00 :0x0000001F;
 400                             m->alphaMask        = deep ? 0x000000FF : 0;
 401                             m->rgbBits          = m->redBits + m->greenBits +
 402                                                   m->blueBits + m->alphaBits;
 403                             m->accumRedBits     = accum ? 16 : 0;
 404                             m->accumGreenBits   = accum ? 16 : 0;
 405                             m->accumBlueBits    = accum ? 16 : 0;
 406                             m->accumAlphaBits   = (accum && deep) ? 16 : 0;
 407                             m->stencilBits      = stencil ? 8 : 0;
 408                             m->depthBits        = deep
 409                                                   ? (depth ? 24 : 0)
 410                                                   : (depth ? 0 : depth_bits);
 411                             m->visualType       = vis[i];
 412                             m->renderType       = GLX_RGBA_BIT;
 413                             m->drawableType     = GLX_WINDOW_BIT;
 414                             m->rgbMode          = GL_TRUE;
 415                             m->doubleBufferMode = db ? GL_TRUE : GL_FALSE;
 416                             if (db)
 417                                 m->swapMethod = GLX_SWAP_UNDEFINED_OML;
 418                             m->visualRating     = ((stencil && !deep) || accum)
 419                                                   ? GLX_SLOW_CONFIG
 420                                                   : GLX_NONE;
 421                             m = m->next;
 422                             if (deep) stencil = 0;
 423                         }
 424                     }
 425                 }
 426             }
 427         }
 428
 429         return modes;
 430 }
 431
 432 /**
 433  * This is the driver specific part of the createNewScreen entry point.
 434  *
 435  * \todo maybe fold this into intelInitDriver
 436  *
 437  * \return the __GLcontextModes supported by this driver
 438  */
 439 __GLcontextModes *__driDriverInitScreen(__DRIscreenPrivate *psp)
 440 {
 441    static const __DRIversion ddx_expected = { 1, 1, 0 };
 442    static const __DRIversion dri_expected = { 4, 0, 0 };
 443    static const __DRIversion drm_expected = { 1, 0, 0 };
 444
 445    /* divined from tdfx_dri.c, sketchy */
 446    TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
 447
 448    /* XXX i wish it was like this */
 449    /* bpp = dri_priv->bpp */
 450    int bpp = (dri_priv->cpp > 2) ? 24 : 16;
 451
 452    if ( ! driCheckDriDdxDrmVersions2( "tdfx",
 453                                       &psp->dri_version, & dri_expected,
 454                                       &psp->ddx_version, & ddx_expected,
 455                                       &psp->drm_version, & drm_expected ) )
 456       return NULL;
 457
 458    psp->DriverAPI = tdfxAPI;
 459
 460    /* Calling driInitExtensions here, with a NULL context pointer,
 461     * does not actually enable the extensions.  It just makes sure
 462     * that all the dispatch offsets for all the extensions that
 463     * *might* be enables are known.  This is needed because the
 464     * dispatch offsets need to be known when _mesa_context_create is
 465     * called, but we can't enable the extensions until we have a
 466     * context pointer.
 467     *
 468     * Hello chicken.  Hello egg.  How are you two today?
 469     */
 470    driInitExtensions( NULL, card_extensions, GL_FALSE );
 471    driInitExtensions( NULL, napalm_extensions, GL_FALSE );
 472
 473    if (!tdfxInitDriver(psp))
 474       return NULL;
 475
 476    return tdfxFillInModes(bpp, (bpp == 16) ? 16 : 24,
 477                           (bpp == 16) ? 0 : 8,
 478                           (dri_priv->backOffset!=dri_priv->depthOffset));
 479 }