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
  27 /*
  28  * Original rewrite:
  29  *      Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
  30  *
  31  * Authors:
  32  *      Gareth Hughes <gareth@valinux.com>
  33  *
  34  */
  35
  36 #include "tdfx_dri.h"
  37 #include "tdfx_context.h"
  38 #include "tdfx_lock.h"
  39 #include "tdfx_vb.h"
  40 #include "tdfx_span.h"
  41 #include "tdfx_tris.h"
  42
  43 #include "main/framebuffer.h"
  44 #include "main/renderbuffer.h"
  45 #include "xmlpool.h"
  46
  47 #include "utils.h"
  48
  49 #ifdef DEBUG_LOCKING
  50 char *prevLockFile = 0;
  51 int prevLockLine = 0;
  52 #endif
  53
  54 #ifndef TDFX_DEBUG
  55 int TDFX_DEBUG = 0;
  56 #endif
  57
  58 PUBLIC const char __driConfigOptions[] =
  59 DRI_CONF_BEGIN
  60     DRI_CONF_SECTION_DEBUG
  61         DRI_CONF_NO_RAST(false)
  62     DRI_CONF_SECTION_END
  63 DRI_CONF_END;
  64
  65 static const __DRIextension *tdfxExtensions[] = {
  66     &driReadDrawableExtension,
  67     NULL
  68 };
  69
  70 static const GLuint __driNConfigOptions = 1;
  71
  72 static GLboolean
  73 tdfxCreateScreen( __DRIscreenPrivate *sPriv )
  74 {
  75    tdfxScreenPrivate *fxScreen;
  76    TDFXDRIPtr fxDRIPriv = (TDFXDRIPtr) sPriv->pDevPriv;
  77
  78    if (sPriv->devPrivSize != sizeof(TDFXDRIRec)) {
  79       fprintf(stderr,"\nERROR!  sizeof(TDFXDRIRec) does not match passed size from device driver\n");
  80       return GL_FALSE;
  81    }
  82
  83    /* Allocate the private area */
  84    fxScreen = (tdfxScreenPrivate *) CALLOC( sizeof(tdfxScreenPrivate) );
  85    if ( !fxScreen )
  86       return GL_FALSE;
  87
  88    /* parse information in __driConfigOptions */
  89    driParseOptionInfo (&fxScreen->optionCache,
  90                        __driConfigOptions, __driNConfigOptions);
  91
  92    fxScreen->driScrnPriv = sPriv;
  93    sPriv->private = (void *) fxScreen;
  94
  95    fxScreen->regs.handle        = fxDRIPriv->regs;
  96    fxScreen->regs.size          = fxDRIPriv->regsSize;
  97    fxScreen->deviceID           = fxDRIPriv->deviceID;
  98    fxScreen->width              = fxDRIPriv->width;
  99    fxScreen->height             = fxDRIPriv->height;
 100    fxScreen->mem                = fxDRIPriv->mem;
 101    fxScreen->cpp                = fxDRIPriv->cpp;
 102    fxScreen->stride             = fxDRIPriv->stride;
 103    fxScreen->fifoOffset         = fxDRIPriv->fifoOffset;
 104    fxScreen->fifoSize           = fxDRIPriv->fifoSize;
 105    fxScreen->fbOffset           = fxDRIPriv->fbOffset;
 106    fxScreen->backOffset         = fxDRIPriv->backOffset;
 107    fxScreen->depthOffset        = fxDRIPriv->depthOffset;
 108    fxScreen->textureOffset      = fxDRIPriv->textureOffset;
 109    fxScreen->textureSize        = fxDRIPriv->textureSize;
 110    fxScreen->sarea_priv_offset  = fxDRIPriv->sarea_priv_offset;
 111
 112    if ( drmMap( sPriv->fd, fxScreen->regs.handle,
 113                 fxScreen->regs.size, &fxScreen->regs.map ) ) {
 114       return GL_FALSE;
 115    }
 116
 117    sPriv->extensions = tdfxExtensions;
 118
 119    return GL_TRUE;
 120 }
 121
 122
 123 static void
 124 tdfxDestroyScreen( __DRIscreenPrivate *sPriv )
 125 {
 126    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 127
 128    if (!fxScreen)
 129       return;
 130
 131    drmUnmap( fxScreen->regs.map, fxScreen->regs.size );
 132
 133    /* free all option information */
 134    driDestroyOptionInfo (&fxScreen->optionCache);
 135
 136    FREE( fxScreen );
 137    sPriv->private = NULL;
 138 }
 139
 140
 141 static GLboolean
 142 tdfxInitDriver( __DRIscreenPrivate *sPriv )
 143 {
 144    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 145       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)sPriv );
 146    }
 147
 148    if ( !tdfxCreateScreen( sPriv ) ) {
 149       tdfxDestroyScreen( sPriv );
 150       return GL_FALSE;
 151    }
 152
 153    return GL_TRUE;
 154 }
 155
 156
 157 static GLboolean
 158 tdfxCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 159                   __DRIdrawablePrivate *driDrawPriv,
 160                   const __GLcontextModes *mesaVis,
 161                   GLboolean isPixmap )
 162 {
 163    tdfxScreenPrivate *screen = (tdfxScreenPrivate *) driScrnPriv->private;
 164
 165    if (isPixmap) {
 166       return GL_FALSE; /* not implemented */
 167    }
 168    else {
 169       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 170
 171       {
 172          driRenderbuffer *frontRb
 173             = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
 174                                  screen->fbOffset, screen->width, driDrawPriv);
 175          tdfxSetSpanFunctions(frontRb, mesaVis);
 176          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 177       }
 178
 179       if (mesaVis->doubleBufferMode) {
 180          driRenderbuffer *backRb
 181             = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
 182                                  screen->backOffset, screen->width,
 183                                  driDrawPriv);
 184          tdfxSetSpanFunctions(backRb, mesaVis);
 185          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 186          backRb->backBuffer = GL_TRUE;
 187       }
 188
 189       if (mesaVis->depthBits == 16) {
 190          driRenderbuffer *depthRb
 191             = driNewRenderbuffer(MESA_FORMAT_Z16, NULL, screen->cpp,
 192                                  screen->depthOffset, screen->width,
 193                                  driDrawPriv);
 194          tdfxSetSpanFunctions(depthRb, mesaVis);
 195          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 196       }
 197       else if (mesaVis->depthBits == 24) {
 198          driRenderbuffer *depthRb
 199             = driNewRenderbuffer(MESA_FORMAT_Z24_S8, NULL, screen->cpp,
 200                                  screen->depthOffset, screen->width,
 201                                  driDrawPriv);
 202          tdfxSetSpanFunctions(depthRb, mesaVis);
 203          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 204       }
 205
 206       if (mesaVis->stencilBits > 0) {
 207          driRenderbuffer *stencilRb
 208             = driNewRenderbuffer(MESA_FORMAT_S8, NULL, screen->cpp,
 209                                  screen->depthOffset, screen->width,
 210                                  driDrawPriv);
 211          tdfxSetSpanFunctions(stencilRb, mesaVis);
 212          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 213       }
 214
 215       _mesa_add_soft_renderbuffers(fb,
 216                                    GL_FALSE, /* color */
 217                                    GL_FALSE, /* depth */
 218                                    GL_FALSE, /*swStencil,*/
 219                                    mesaVis->accumRedBits > 0,
 220                                    GL_FALSE, /* alpha */
 221                                    GL_FALSE /* aux */);
 222       driDrawPriv->driverPrivate = (void *) fb;
 223
 224       return (driDrawPriv->driverPrivate != NULL);
 225    }
 226 }
 227
 228
 229 static void
 230 tdfxDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 231 {
 232    _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 233 }
 234
 235
 236 static void
 237 tdfxSwapBuffers( __DRIdrawablePrivate *driDrawPriv )
 238
 239 {
 240    GET_CURRENT_CONTEXT(ctx);
 241    tdfxContextPtr fxMesa = 0;
 242    GLframebuffer *mesaBuffer;
 243
 244    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 245       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
 246    }
 247
 248    mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
 249    if ( !mesaBuffer->Visual.doubleBufferMode )
 250       return; /* can't swap a single-buffered window */
 251
 252    /* If the current context's drawable matches the given drawable
 253     * we have to do a glFinish (per the GLX spec).
 254     */
 255    if ( ctx ) {
 256       __DRIdrawablePrivate *curDrawPriv;
 257       fxMesa = TDFX_CONTEXT(ctx);
 258       curDrawPriv = fxMesa->driContext->driDrawablePriv;
 259
 260       if ( curDrawPriv == driDrawPriv ) {
 261          /* swapping window bound to current context, flush first */
 262          _mesa_notifySwapBuffers( ctx );
 263          LOCK_HARDWARE( fxMesa );
 264       }
 265       else {
 266          /* find the fxMesa context previously bound to the window */
 267          fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
 268          if (!fxMesa)
 269             return;
 270          LOCK_HARDWARE( fxMesa );
 271          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 272 #ifdef DEBUG
 273          printf("SwapBuf SetState 1\n");
 274 #endif
 275          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 276       }
 277    }
 278
 279 #ifdef STATS
 280    {
 281       int stalls;
 282       static int prevStalls = 0;
 283
 284       stalls = fxMesa->Glide.grFifoGetStalls();
 285
 286       fprintf( stderr, "%s:\n", __FUNCTION__ );
 287       if ( stalls != prevStalls ) {
 288          fprintf( stderr, "    %d stalls occurred\n",
 289                   stalls - prevStalls );
 290          prevStalls = stalls;
 291       }
 292       if ( fxMesa && fxMesa->texSwaps ) {
 293          fprintf( stderr, "    %d texture swaps occurred\n",
 294                   fxMesa->texSwaps );
 295          fxMesa->texSwaps = 0;
 296       }
 297    }
 298 #endif
 299
 300    if (fxMesa->scissoredClipRects) {
 301       /* restore clip rects without scissor box */
 302       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 303                                    driDrawPriv->w, driDrawPriv->h,
 304                                    driDrawPriv->numClipRects,
 305                                    driDrawPriv->pClipRects );
 306    }
 307
 308    fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
 309
 310    if (fxMesa->scissoredClipRects) {
 311       /* restore clip rects WITH scissor box */
 312       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 313                                    driDrawPriv->w, driDrawPriv->h,
 314                                    fxMesa->numClipRects, fxMesa->pClipRects );
 315    }
 316
 317
 318 #if 0
 319    {
 320       FxI32 result;
 321       do {
 322          FxI32 result;
 323          fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
 324       } while ( result > fxMesa->maxPendingSwapBuffers );
 325    }
 326 #endif
 327
 328    fxMesa->stats.swapBuffer++;
 329
 330    if (ctx) {
 331       if (ctx->DriverCtx != fxMesa) {
 332          fxMesa = TDFX_CONTEXT(ctx);
 333          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 334 #ifdef DEBUG
 335          printf("SwapBuf SetState 2\n");
 336 #endif
 337          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 338       }
 339       UNLOCK_HARDWARE( fxMesa );
 340    }
 341 }
 342
 343 static const __DRIconfig **
 344 tdfxFillInModes(__DRIscreenPrivate *psp,
 345                 unsigned pixel_bits,
 346                 unsigned depth_bits,
 347                 unsigned stencil_bits,
 348                 GLboolean have_back_buffer)
 349 {
 350         unsigned deep = (depth_bits > 17);
 351
 352         /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 353          * enough to add support.  Basically, if a context is created with an
 354          * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 355          * will never be used.
 356          */
 357
 358         static const GLenum db_modes[2] = { GLX_NONE, GLX_SWAP_UNDEFINED_OML };
 359         uint8_t depth_bits_array[4];
 360         uint8_t stencil_bits_array[4];
 361         uint8_t msaa_samples_array[1];
 362         if(deep) {
 363                 depth_bits_array[0] = 0;
 364                 depth_bits_array[1] = 24;
 365                 stencil_bits_array[0] = 0;
 366                 stencil_bits_array[1] = 8;
 367         } else {
 368                 depth_bits_array[0] = depth_bits;
 369                 depth_bits_array[1] = 0;
 370                 depth_bits_array[2] = depth_bits;
 371                 depth_bits_array[3] = 0;
 372                 stencil_bits_array[0] = 0;
 373                 stencil_bits_array[1] = 0;
 374                 stencil_bits_array[2] = 8;
 375                 stencil_bits_array[3] = 8;
 376         }
 377
 378         msaa_samples_array[0] = 0;
 379
 380         return (const __DRIconfig **)
 381            driCreateConfigs(deep ? GL_RGBA : GL_RGB,
 382                             deep ? GL_UNSIGNED_INT_8_8_8_8 :
 383                                    GL_UNSIGNED_SHORT_5_6_5,
 384                             depth_bits_array,
 385                             stencil_bits_array,
 386                             deep ? 2 : 4,
 387                             db_modes, 2,
 388                             msaa_samples_array, 1);
 389 }
 390
 391 /**
 392  * This is the driver specific part of the createNewScreen entry point.
 393  *
 394  * \todo maybe fold this into intelInitDriver
 395  *
 396  * \return the __GLcontextModes supported by this driver
 397  */
 398 static const __DRIconfig **
 399 tdfxInitScreen(__DRIscreen *psp)
 400 {
 401    static const __DRIversion ddx_expected = { 1, 1, 0 };
 402    static const __DRIversion dri_expected = { 4, 0, 0 };
 403    static const __DRIversion drm_expected = { 1, 0, 0 };
 404
 405    /* divined from tdfx_dri.c, sketchy */
 406    TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
 407
 408    /* XXX i wish it was like this */
 409    /* bpp = dri_priv->bpp */
 410    int bpp = (dri_priv->cpp > 2) ? 24 : 16;
 411
 412    if ( ! driCheckDriDdxDrmVersions2( "tdfx",
 413                                       &psp->dri_version, & dri_expected,
 414                                       &psp->ddx_version, & ddx_expected,
 415                                       &psp->drm_version, & drm_expected ) )
 416       return NULL;
 417
 418    if (!tdfxInitDriver(psp))
 419       return NULL;
 420
 421    return tdfxFillInModes(psp,
 422                           bpp, (bpp == 16) ? 16 : 24,
 423                           (bpp == 16) ? 0 : 8,
 424                           (dri_priv->backOffset!=dri_priv->depthOffset));
 425 }
 426
 427 const struct __DriverAPIRec driDriverAPI = {
 428    .InitScreen      = tdfxInitScreen,
 429    .DestroyScreen   = tdfxDestroyScreen,
 430    .CreateContext   = tdfxCreateContext,
 431    .DestroyContext  = tdfxDestroyContext,
 432    .CreateBuffer    = tdfxCreateBuffer,
 433    .DestroyBuffer   = tdfxDestroyBuffer,
 434    .SwapBuffers     = tdfxSwapBuffers,
 435    .MakeCurrent     = tdfxMakeCurrent,
 436    .UnbindContext   = tdfxUnbindContext,
 437    .GetSwapInfo     = NULL,
 438    .GetDrawableMSC  = NULL,
 439    .WaitForMSC      = NULL,
 440    .WaitForSBC      = NULL,
 441    .SwapBuffersMSC  = NULL
 442 };