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_span.h"
  40
  41 #include "main/framebuffer.h"
  42 #include "main/renderbuffer.h"
  43 #include "xmlpool.h"
  44
  45 #include "utils.h"
  46
  47 #ifdef DEBUG_LOCKING
  48 char *prevLockFile = 0;
  49 int prevLockLine = 0;
  50 #endif
  51
  52 #ifndef TDFX_DEBUG
  53 int TDFX_DEBUG = 0;
  54 #endif
  55
  56 PUBLIC const char __driConfigOptions[] =
  57 DRI_CONF_BEGIN
  58     DRI_CONF_SECTION_DEBUG
  59         DRI_CONF_NO_RAST(false)
  60     DRI_CONF_SECTION_END
  61 DRI_CONF_END;
  62
  63 static const __DRIextension *tdfxExtensions[] = {
  64     &driReadDrawableExtension,
  65     NULL
  66 };
  67
  68 static const GLuint __driNConfigOptions = 1;
  69
  70 static GLboolean
  71 tdfxCreateScreen( __DRIscreen *sPriv )
  72 {
  73    tdfxScreenPrivate *fxScreen;
  74    TDFXDRIPtr fxDRIPriv = (TDFXDRIPtr) sPriv->pDevPriv;
  75
  76    if (sPriv->devPrivSize != sizeof(TDFXDRIRec)) {
  77       fprintf(stderr,"\nERROR!  sizeof(TDFXDRIRec) does not match passed size from device driver\n");
  78       return GL_FALSE;
  79    }
  80
  81    /* Allocate the private area */
  82    fxScreen = (tdfxScreenPrivate *) CALLOC( sizeof(tdfxScreenPrivate) );
  83    if ( !fxScreen )
  84       return GL_FALSE;
  85
  86    /* parse information in __driConfigOptions */
  87    driParseOptionInfo (&fxScreen->optionCache,
  88                        __driConfigOptions, __driNConfigOptions);
  89
  90    fxScreen->driScrnPriv = sPriv;
  91    sPriv->private = (void *) fxScreen;
  92
  93    fxScreen->regs.handle        = fxDRIPriv->regs;
  94    fxScreen->regs.size          = fxDRIPriv->regsSize;
  95    fxScreen->deviceID           = fxDRIPriv->deviceID;
  96    fxScreen->width              = fxDRIPriv->width;
  97    fxScreen->height             = fxDRIPriv->height;
  98    fxScreen->mem                = fxDRIPriv->mem;
  99    fxScreen->cpp                = fxDRIPriv->cpp;
 100    fxScreen->stride             = fxDRIPriv->stride;
 101    fxScreen->fifoOffset         = fxDRIPriv->fifoOffset;
 102    fxScreen->fifoSize           = fxDRIPriv->fifoSize;
 103    fxScreen->fbOffset           = fxDRIPriv->fbOffset;
 104    fxScreen->backOffset         = fxDRIPriv->backOffset;
 105    fxScreen->depthOffset        = fxDRIPriv->depthOffset;
 106    fxScreen->textureOffset      = fxDRIPriv->textureOffset;
 107    fxScreen->textureSize        = fxDRIPriv->textureSize;
 108    fxScreen->sarea_priv_offset  = fxDRIPriv->sarea_priv_offset;
 109
 110    if ( drmMap( sPriv->fd, fxScreen->regs.handle,
 111                 fxScreen->regs.size, &fxScreen->regs.map ) ) {
 112       return GL_FALSE;
 113    }
 114
 115    sPriv->extensions = tdfxExtensions;
 116
 117    return GL_TRUE;
 118 }
 119
 120
 121 static void
 122 tdfxDestroyScreen( __DRIscreen *sPriv )
 123 {
 124    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 125
 126    if (!fxScreen)
 127       return;
 128
 129    drmUnmap( fxScreen->regs.map, fxScreen->regs.size );
 130
 131    /* free all option information */
 132    driDestroyOptionInfo (&fxScreen->optionCache);
 133
 134    FREE( fxScreen );
 135    sPriv->private = NULL;
 136 }
 137
 138
 139 static GLboolean
 140 tdfxInitDriver( __DRIscreen *sPriv )
 141 {
 142    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 143       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)sPriv );
 144    }
 145
 146    if ( !tdfxCreateScreen( sPriv ) ) {
 147       tdfxDestroyScreen( sPriv );
 148       return GL_FALSE;
 149    }
 150
 151    return GL_TRUE;
 152 }
 153
 154
 155 static GLboolean
 156 tdfxCreateBuffer( __DRIscreen *driScrnPriv,
 157                   __DRIdrawable *driDrawPriv,
 158                   const __GLcontextModes *mesaVis,
 159                   GLboolean isPixmap )
 160 {
 161    tdfxScreenPrivate *screen = (tdfxScreenPrivate *) driScrnPriv->private;
 162
 163    if (isPixmap) {
 164       return GL_FALSE; /* not implemented */
 165    }
 166    else {
 167       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 168
 169       {
 170          driRenderbuffer *frontRb
 171             = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
 172                                  screen->fbOffset, screen->width, driDrawPriv);
 173          tdfxSetSpanFunctions(frontRb, mesaVis);
 174          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 175       }
 176
 177       if (mesaVis->doubleBufferMode) {
 178          driRenderbuffer *backRb
 179             = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
 180                                  screen->backOffset, screen->width,
 181                                  driDrawPriv);
 182          tdfxSetSpanFunctions(backRb, mesaVis);
 183          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 184          backRb->backBuffer = GL_TRUE;
 185       }
 186
 187       if (mesaVis->depthBits == 16) {
 188          driRenderbuffer *depthRb
 189             = driNewRenderbuffer(MESA_FORMAT_Z16, NULL, screen->cpp,
 190                                  screen->depthOffset, screen->width,
 191                                  driDrawPriv);
 192          tdfxSetSpanFunctions(depthRb, mesaVis);
 193          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 194       }
 195       else if (mesaVis->depthBits == 24) {
 196          driRenderbuffer *depthRb
 197             = driNewRenderbuffer(MESA_FORMAT_Z24_S8, NULL, screen->cpp,
 198                                  screen->depthOffset, screen->width,
 199                                  driDrawPriv);
 200          tdfxSetSpanFunctions(depthRb, mesaVis);
 201          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 202       }
 203
 204       if (mesaVis->stencilBits > 0) {
 205          driRenderbuffer *stencilRb
 206             = driNewRenderbuffer(MESA_FORMAT_S8, NULL, screen->cpp,
 207                                  screen->depthOffset, screen->width,
 208                                  driDrawPriv);
 209          tdfxSetSpanFunctions(stencilRb, mesaVis);
 210          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 211       }
 212
 213       _mesa_add_soft_renderbuffers(fb,
 214                                    GL_FALSE, /* color */
 215                                    GL_FALSE, /* depth */
 216                                    GL_FALSE, /*swStencil,*/
 217                                    mesaVis->accumRedBits > 0,
 218                                    GL_FALSE, /* alpha */
 219                                    GL_FALSE /* aux */);
 220       driDrawPriv->driverPrivate = (void *) fb;
 221
 222       return (driDrawPriv->driverPrivate != NULL);
 223    }
 224 }
 225
 226
 227 static void
 228 tdfxDestroyBuffer(__DRIdrawable *driDrawPriv)
 229 {
 230    _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
 231 }
 232
 233
 234 static void
 235 tdfxSwapBuffers( __DRIdrawable *driDrawPriv )
 236
 237 {
 238    GET_CURRENT_CONTEXT(ctx);
 239    tdfxContextPtr fxMesa = 0;
 240    GLframebuffer *mesaBuffer;
 241
 242    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 243       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
 244    }
 245
 246    mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
 247    if ( !mesaBuffer->Visual.doubleBufferMode )
 248       return; /* can't swap a single-buffered window */
 249
 250    /* If the current context's drawable matches the given drawable
 251     * we have to do a glFinish (per the GLX spec).
 252     */
 253    if ( ctx ) {
 254       __DRIdrawable *curDrawPriv;
 255       fxMesa = TDFX_CONTEXT(ctx);
 256       curDrawPriv = fxMesa->driContext->driDrawablePriv;
 257
 258       if ( curDrawPriv == driDrawPriv ) {
 259          /* swapping window bound to current context, flush first */
 260          _mesa_notifySwapBuffers( ctx );
 261          LOCK_HARDWARE( fxMesa );
 262       }
 263       else {
 264          /* find the fxMesa context previously bound to the window */
 265          fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
 266          if (!fxMesa)
 267             return;
 268          LOCK_HARDWARE( fxMesa );
 269          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 270 #ifdef DEBUG
 271          printf("SwapBuf SetState 1\n");
 272 #endif
 273          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 274       }
 275    }
 276
 277 #ifdef STATS
 278    {
 279       int stalls;
 280       static int prevStalls = 0;
 281
 282       stalls = fxMesa->Glide.grFifoGetStalls();
 283
 284       fprintf( stderr, "%s:\n", __FUNCTION__ );
 285       if ( stalls != prevStalls ) {
 286          fprintf( stderr, "    %d stalls occurred\n",
 287                   stalls - prevStalls );
 288          prevStalls = stalls;
 289       }
 290       if ( fxMesa && fxMesa->texSwaps ) {
 291          fprintf( stderr, "    %d texture swaps occurred\n",
 292                   fxMesa->texSwaps );
 293          fxMesa->texSwaps = 0;
 294       }
 295    }
 296 #endif
 297
 298    if (fxMesa->scissoredClipRects) {
 299       /* restore clip rects without scissor box */
 300       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 301                                    driDrawPriv->w, driDrawPriv->h,
 302                                    driDrawPriv->numClipRects,
 303                                    driDrawPriv->pClipRects );
 304    }
 305
 306    fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
 307
 308    if (fxMesa->scissoredClipRects) {
 309       /* restore clip rects WITH scissor box */
 310       fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
 311                                    driDrawPriv->w, driDrawPriv->h,
 312                                    fxMesa->numClipRects, fxMesa->pClipRects );
 313    }
 314
 315
 316 #if 0
 317    {
 318       FxI32 result;
 319       do {
 320          FxI32 result;
 321          fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
 322       } while ( result > fxMesa->maxPendingSwapBuffers );
 323    }
 324 #endif
 325
 326    fxMesa->stats.swapBuffer++;
 327
 328    if (ctx) {
 329       if (ctx->DriverCtx != fxMesa) {
 330          fxMesa = TDFX_CONTEXT(ctx);
 331          fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 332 #ifdef DEBUG
 333          printf("SwapBuf SetState 2\n");
 334 #endif
 335          fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
 336       }
 337       UNLOCK_HARDWARE( fxMesa );
 338    }
 339 }
 340
 341 static const __DRIconfig **
 342 tdfxFillInModes(__DRIscreen *psp,
 343                 unsigned pixel_bits,
 344                 unsigned depth_bits,
 345                 unsigned stencil_bits,
 346                 GLboolean have_back_buffer)
 347 {
 348         unsigned deep = (depth_bits > 17);
 349
 350         /* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
 351          * enough to add support.  Basically, if a context is created with an
 352          * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
 353          * will never be used.
 354          */
 355
 356         static const GLenum db_modes[2] = { GLX_NONE, GLX_SWAP_UNDEFINED_OML };
 357         uint8_t depth_bits_array[4];
 358         uint8_t stencil_bits_array[4];
 359         uint8_t msaa_samples_array[1];
 360         if(deep) {
 361                 depth_bits_array[0] = 0;
 362                 depth_bits_array[1] = 24;
 363                 stencil_bits_array[0] = 0;
 364                 stencil_bits_array[1] = 8;
 365         } else {
 366                 depth_bits_array[0] = depth_bits;
 367                 depth_bits_array[1] = 0;
 368                 depth_bits_array[2] = depth_bits;
 369                 depth_bits_array[3] = 0;
 370                 stencil_bits_array[0] = 0;
 371                 stencil_bits_array[1] = 0;
 372                 stencil_bits_array[2] = 8;
 373                 stencil_bits_array[3] = 8;
 374         }
 375
 376         msaa_samples_array[0] = 0;
 377
 378         return (const __DRIconfig **)
 379            driCreateConfigs(deep ? GL_RGBA : GL_RGB,
 380                             deep ? GL_UNSIGNED_INT_8_8_8_8 :
 381                                    GL_UNSIGNED_SHORT_5_6_5,
 382                             depth_bits_array,
 383                             stencil_bits_array,
 384                             deep ? 2 : 4,
 385                             db_modes, 2,
 386                             msaa_samples_array, 1);
 387 }
 388
 389 /**
 390  * This is the driver specific part of the createNewScreen entry point.
 391  *
 392  * \todo maybe fold this into intelInitDriver
 393  *
 394  * \return the __GLcontextModes supported by this driver
 395  */
 396 static const __DRIconfig **
 397 tdfxInitScreen(__DRIscreen *psp)
 398 {
 399    static const __DRIversion ddx_expected = { 1, 1, 0 };
 400    static const __DRIversion dri_expected = { 4, 0, 0 };
 401    static const __DRIversion drm_expected = { 1, 0, 0 };
 402
 403    /* divined from tdfx_dri.c, sketchy */
 404    TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
 405
 406    /* XXX i wish it was like this */
 407    /* bpp = dri_priv->bpp */
 408    int bpp = (dri_priv->cpp > 2) ? 24 : 16;
 409
 410    if ( ! driCheckDriDdxDrmVersions2( "tdfx",
 411                                       &psp->dri_version, & dri_expected,
 412                                       &psp->ddx_version, & ddx_expected,
 413                                       &psp->drm_version, & drm_expected ) )
 414       return NULL;
 415
 416    if (!tdfxInitDriver(psp))
 417       return NULL;
 418
 419    return tdfxFillInModes(psp,
 420                           bpp, (bpp == 16) ? 16 : 24,
 421                           (bpp == 16) ? 0 : 8,
 422                           (dri_priv->backOffset!=dri_priv->depthOffset));
 423 }
 424
 425 const struct __DriverAPIRec driDriverAPI = {
 426    .InitScreen      = tdfxInitScreen,
 427    .DestroyScreen   = tdfxDestroyScreen,
 428    .CreateContext   = tdfxCreateContext,
 429    .DestroyContext  = tdfxDestroyContext,
 430    .CreateBuffer    = tdfxCreateBuffer,
 431    .DestroyBuffer   = tdfxDestroyBuffer,
 432    .SwapBuffers     = tdfxSwapBuffers,
 433    .MakeCurrent     = tdfxMakeCurrent,
 434    .UnbindContext   = tdfxUnbindContext,
 435    .GetSwapInfo     = NULL,
 436    .GetDrawableMSC  = NULL,
 437    .WaitForMSC      = NULL,
 438    .WaitForSBC      = NULL,
 439    .SwapBuffersMSC  = NULL
 440 };
 441
 442 /* This is the table of extensions that the loader will dlsym() for. */
 443 PUBLIC const __DRIextension *__driDriverExtensions[] = {
 444     &driCoreExtension.base,
 445     &driLegacyExtension.base,
 446     NULL
 447 };