src/mesa/drivers/dri/i965/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "glheader.h"
  29 #include "context.h"
  30 #include "framebuffer.h"
  31 #include "matrix.h"
  32 #include "renderbuffer.h"
  33 #include "simple_list.h"
  34 #include "utils.h"
  35 #include "vblank.h"
  36 #include "xmlpool.h"
  37
  38
  39 #include "intel_screen.h"
  40
  41 #include "intel_context.h"
  42 #include "intel_tex.h"
  43 #include "intel_span.h"
  44 #include "intel_ioctl.h"
  45
  46 #include "i830_dri.h"
  47
  48 PUBLIC const char __driConfigOptions[] =
  49 DRI_CONF_BEGIN
  50     DRI_CONF_SECTION_PERFORMANCE
  51        DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  52        DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  53     DRI_CONF_SECTION_END
  54     DRI_CONF_SECTION_QUALITY
  55        DRI_CONF_FORCE_S3TC_ENABLE(false)
  56        DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  57       DRI_CONF_SECTION_END
  58 DRI_CONF_END;
  59 const GLuint __driNConfigOptions = 4;
  60
  61 #ifdef USE_NEW_INTERFACE
  62 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  63 #endif /*USE_NEW_INTERFACE*/
  64
  65 /**
  66  * Map all the memory regions described by the screen.
  67  * \return GL_TRUE if success, GL_FALSE if error.
  68  */
  69 GLboolean
  70 intelMapScreenRegions(__DRIscreenPrivate *sPriv)
  71 {
  72    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
  73
  74    if (intelScreen->front.handle) {
  75       if (drmMap(sPriv->fd,
  76                  intelScreen->front.handle,
  77                  intelScreen->front.size,
  78                  (drmAddress *)&intelScreen->front.map) != 0) {
  79          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  80          return GL_FALSE;
  81       }
  82    } else {
  83       /* Use the old static allocation method if the server isn't setting up
  84        * a movable handle for us.  Add in the front buffer offset from
  85        * framebuffer start, as our span routines (unlike other drivers) expect
  86        * the renderbuffer address to point to the beginning of the
  87        * renderbuffer.
  88        */
  89       intelScreen->front.map = (char *)sPriv->pFB;
  90       if (intelScreen->front.map == NULL) {
  91          fprintf(stderr, "Failed to find framebuffer mapping\n");
  92          return GL_FALSE;
  93       }
  94    }
  95
  96    if (drmMap(sPriv->fd,
  97               intelScreen->back.handle,
  98               intelScreen->back.size,
  99               (drmAddress *)&intelScreen->back.map) != 0) {
 100       intelUnmapScreenRegions(intelScreen);
 101       return GL_FALSE;
 102    }
 103
 104    if (drmMap(sPriv->fd,
 105               intelScreen->depth.handle,
 106               intelScreen->depth.size,
 107               (drmAddress *)&intelScreen->depth.map) != 0) {
 108       intelUnmapScreenRegions(intelScreen);
 109       return GL_FALSE;
 110    }
 111
 112    if (intelScreen->tex.size != 0) {
 113       intelScreen->ttm = GL_FALSE;
 114
 115       if (drmMap(sPriv->fd,
 116                  intelScreen->tex.handle,
 117                  intelScreen->tex.size,
 118                  (drmAddress *)&intelScreen->tex.map) != 0) {
 119          intelUnmapScreenRegions(intelScreen);
 120          return GL_FALSE;
 121       }
 122    } else {
 123       intelScreen->ttm = GL_TRUE;
 124    }
 125
 126    if (0)
 127       printf("Mappings:  front: %p  back: %p  depth: %p  tex: %p\n",
 128           intelScreen->front.map,
 129           intelScreen->back.map,
 130           intelScreen->depth.map,
 131           intelScreen->tex.map);
 132    return GL_TRUE;
 133 }
 134
 135
 136 void
 137 intelUnmapScreenRegions(intelScreenPrivate *intelScreen)
 138 {
 139 #define REALLY_UNMAP 1
 140    /* If front.handle is present, we're doing the dynamic front buffer mapping,
 141     * but if we've fallen back to static allocation then we shouldn't try to
 142     * unmap here.
 143     */
 144    if (intelScreen->front.handle) {
 145 #if REALLY_UNMAP
 146       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 147          printf("drmUnmap front failed!\n");
 148 #endif
 149       intelScreen->front.map = NULL;
 150    }
 151    if (intelScreen->back.map) {
 152 #if REALLY_UNMAP
 153       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 154          printf("drmUnmap back failed!\n");
 155 #endif
 156       intelScreen->back.map = NULL;
 157    }
 158    if (intelScreen->depth.map) {
 159 #if REALLY_UNMAP
 160       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 161       intelScreen->depth.map = NULL;
 162 #endif
 163    }
 164    if (intelScreen->tex.map) {
 165 #if REALLY_UNMAP
 166       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 167       intelScreen->tex.map = NULL;
 168 #endif
 169    }
 170 }
 171
 172 /** Driver-specific fence emit implementation for the fake memory manager. */
 173 static unsigned int
 174 intel_fence_emit(void *private)
 175 {
 176    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 177    unsigned int fence;
 178
 179    /* XXX: Need to emit a flush, if we haven't already (at least with the
 180     * current batchbuffer implementation, we have).
 181     */
 182
 183    fence = intelEmitIrqLocked(intelScreen);
 184
 185    return fence;
 186 }
 187
 188 /** Driver-specific fence wait implementation for the fake memory manager. */
 189 static int
 190 intel_fence_wait(void *private, unsigned int cookie)
 191 {
 192    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 193
 194    intelWaitIrq(intelScreen, cookie);
 195
 196    return 0;
 197 }
 198
 199 static void
 200 intelPrintDRIInfo(intelScreenPrivate *intelScreen,
 201                   __DRIscreenPrivate *sPriv,
 202                   I830DRIPtr gDRIPriv)
 203 {
 204    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 205            intelScreen->front.size, intelScreen->front.offset,
 206            intelScreen->front.pitch);
 207    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 208            intelScreen->back.size, intelScreen->back.offset,
 209            intelScreen->back.pitch);
 210    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 211            intelScreen->depth.size, intelScreen->depth.offset,
 212            intelScreen->depth.pitch);
 213    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 214            intelScreen->rotated.size, intelScreen->rotated.offset,
 215            intelScreen->rotated.pitch);
 216    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 217            intelScreen->tex.size, intelScreen->tex.offset);
 218    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 219 }
 220
 221
 222 static void
 223 intelPrintSAREA(volatile drmI830Sarea *sarea)
 224 {
 225    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width, sarea->height);
 226    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 227    fprintf(stderr,
 228            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 229            sarea->front_offset, sarea->front_size,
 230            (unsigned) sarea->front_handle);
 231    fprintf(stderr,
 232            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 233            sarea->back_offset, sarea->back_size,
 234            (unsigned) sarea->back_handle);
 235    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 236            sarea->depth_offset, sarea->depth_size,
 237            (unsigned) sarea->depth_handle);
 238    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 239            sarea->tex_offset, sarea->tex_size,
 240            (unsigned) sarea->tex_handle);
 241    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 242    fprintf(stderr,
 243            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 244            sarea->rotated_offset, sarea->rotated_size);
 245    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 246 }
 247
 248
 249 /**
 250  * A number of the screen parameters are obtained/computed from
 251  * information in the SAREA.  This function updates those parameters.
 252  */
 253 void
 254 intelUpdateScreenFromSAREA(intelScreenPrivate *intelScreen,
 255                            volatile drmI830Sarea *sarea)
 256 {
 257    intelScreen->width = sarea->width;
 258    intelScreen->height = sarea->height;
 259
 260    intelScreen->front.offset = sarea->front_offset;
 261    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 262    intelScreen->front.handle = sarea->front_handle;
 263    intelScreen->front.size = sarea->front_size;
 264    intelScreen->front.tiled = sarea->front_tiled;
 265
 266    intelScreen->back.offset = sarea->back_offset;
 267    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 268    intelScreen->back.handle = sarea->back_handle;
 269    intelScreen->back.size = sarea->back_size;
 270    intelScreen->back.tiled = sarea->back_tiled;
 271
 272    intelScreen->depth.offset = sarea->depth_offset;
 273    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 274    intelScreen->depth.handle = sarea->depth_handle;
 275    intelScreen->depth.size = sarea->depth_size;
 276    intelScreen->depth.tiled = sarea->depth_tiled;
 277
 278    intelScreen->tex.offset = sarea->tex_offset;
 279    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 280    intelScreen->tex.handle = sarea->tex_handle;
 281    intelScreen->tex.size = sarea->tex_size;
 282
 283    intelScreen->rotated.offset = sarea->rotated_offset;
 284    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 285    intelScreen->rotated.size = sarea->rotated_size;
 286    intelScreen->rotated.tiled = sarea->rotated_tiled;
 287    intelScreen->current_rotation = sarea->rotation;
 288 #if 0
 289    matrix23Rotate(&intelScreen->rotMatrix,
 290                   sarea->width, sarea->height, sarea->rotation);
 291 #endif
 292    intelScreen->rotatedWidth = sarea->virtualX;
 293    intelScreen->rotatedHeight = sarea->virtualY;
 294
 295    if (0)
 296       intelPrintSAREA(sarea);
 297 }
 298
 299
 300 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 301 {
 302    intelScreenPrivate *intelScreen;
 303    I830DRIPtr         gDRIPriv = (I830DRIPtr)sPriv->pDevPriv;
 304    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 305      (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
 306    void * const psc = sPriv->psc->screenConfigs;
 307    volatile drmI830Sarea *sarea;
 308
 309    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 310       fprintf(stderr,"\nERROR!  sizeof(I830DRIRec) (%ld) does not match passed size from device driver (%d)\n", (unsigned long)sizeof(I830DRIRec), sPriv->devPrivSize);
 311       return GL_FALSE;
 312    }
 313
 314    /* Allocate the private area */
 315    intelScreen = (intelScreenPrivate *)CALLOC(sizeof(intelScreenPrivate));
 316    if (!intelScreen) {
 317       fprintf(stderr,"\nERROR!  Allocating private area failed\n");
 318       return GL_FALSE;
 319    }
 320    /* parse information in __driConfigOptions */
 321    driParseOptionInfo (&intelScreen->optionCache,
 322                        __driConfigOptions, __driNConfigOptions);
 323
 324    intelScreen->driScrnPriv = sPriv;
 325    sPriv->private = (void *)intelScreen;
 326    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 327    sarea = (volatile drmI830Sarea *)
 328          (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 329
 330    intelScreen->deviceID = gDRIPriv->deviceID;
 331    intelScreen->mem = gDRIPriv->mem;
 332    intelScreen->cpp = gDRIPriv->cpp;
 333
 334    switch (gDRIPriv->bitsPerPixel) {
 335    case 15: intelScreen->fbFormat = DV_PF_555; break;
 336    case 16: intelScreen->fbFormat = DV_PF_565; break;
 337    case 32: intelScreen->fbFormat = DV_PF_8888; break;
 338    }
 339
 340    intelUpdateScreenFromSAREA(intelScreen, sarea);
 341
 342    if (0)
 343       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 344
 345    if (!intelMapScreenRegions(sPriv)) {
 346       fprintf(stderr,"\nERROR!  mapping regions\n");
 347       _mesa_free(intelScreen);
 348       sPriv->private = NULL;
 349       return GL_FALSE;
 350    }
 351
 352    intelScreen->drmMinor = sPriv->drmMinor;
 353
 354    /* Determine if IRQs are active? */
 355    {
 356       int ret;
 357       drmI830GetParam gp;
 358
 359       gp.param = I830_PARAM_IRQ_ACTIVE;
 360       gp.value = &intelScreen->irq_active;
 361
 362       ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
 363                                  &gp, sizeof(gp));
 364       if (ret) {
 365          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 366          return GL_FALSE;
 367       }
 368    }
 369
 370    /* Determine if batchbuffers are allowed */
 371    {
 372       int ret;
 373       drmI830GetParam gp;
 374
 375       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 376       gp.value = &intelScreen->allow_batchbuffer;
 377
 378       ret = drmCommandWriteRead( sPriv->fd, DRM_I830_GETPARAM,
 379                                  &gp, sizeof(gp));
 380       if (ret) {
 381          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 382          return GL_FALSE;
 383       }
 384    }
 385
 386    if (glx_enable_extension != NULL) {
 387       (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
 388       (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
 389       (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
 390       (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
 391       (*glx_enable_extension)( psc, "GLX_SGI_make_current_read" );
 392       (*glx_enable_extension)( psc, "GLX_MESA_copy_sub_buffer" );
 393    }
 394
 395    assert(!intelScreen->ttm);
 396    intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 397                                               intelScreen->tex.map,
 398                                               intelScreen->tex.size,
 399                                               intel_fence_emit,
 400                                               intel_fence_wait,
 401                                               intelScreen);
 402    if (intelScreen->bufmgr == FALSE) {
 403       fprintf(stderr, "Couldn't initialize buffer manager\n");
 404       return GL_FALSE;
 405    }
 406
 407    return GL_TRUE;
 408 }
 409
 410
 411 static void intelDestroyScreen(__DRIscreenPrivate *sPriv)
 412 {
 413    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 414
 415    intelUnmapScreenRegions(intelScreen);
 416    dri_bufmgr_destroy(intelScreen->bufmgr);
 417    FREE(intelScreen);
 418    sPriv->private = NULL;
 419 }
 420
 421 static GLboolean intelCreateBuffer( __DRIscreenPrivate *driScrnPriv,
 422                                     __DRIdrawablePrivate *driDrawPriv,
 423                                     const __GLcontextModes *mesaVis,
 424                                     GLboolean isPixmap )
 425 {
 426    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 427
 428    if (isPixmap) {
 429       return GL_FALSE; /* not implemented */
 430    } else {
 431       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 432                              mesaVis->depthBits != 24);
 433
 434       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 435
 436       {
 437          driRenderbuffer *frontRb
 438             = driNewRenderbuffer(GL_RGBA,
 439                                  screen->front.map,
 440                                  screen->cpp,
 441                                  screen->front.offset, screen->front.pitch,
 442                                  driDrawPriv);
 443          intelSetSpanFunctions(frontRb, mesaVis);
 444          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 445       }
 446
 447       if (mesaVis->doubleBufferMode) {
 448          driRenderbuffer *backRb
 449             = driNewRenderbuffer(GL_RGBA,
 450                                  screen->back.map,
 451                                  screen->cpp,
 452                                  screen->back.offset, screen->back.pitch,
 453                                  driDrawPriv);
 454          intelSetSpanFunctions(backRb, mesaVis);
 455          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 456       }
 457
 458       if (mesaVis->depthBits == 16) {
 459          driRenderbuffer *depthRb
 460             = driNewRenderbuffer(GL_DEPTH_COMPONENT16,
 461                                  screen->depth.map,
 462                                  screen->cpp,
 463                                  screen->depth.offset, screen->depth.pitch,
 464                                  driDrawPriv);
 465          intelSetSpanFunctions(depthRb, mesaVis);
 466          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 467       }
 468       else if (mesaVis->depthBits == 24) {
 469          driRenderbuffer *depthRb
 470             = driNewRenderbuffer(GL_DEPTH_COMPONENT24,
 471                                  screen->depth.map,
 472                                  screen->cpp,
 473                                  screen->depth.offset, screen->depth.pitch,
 474                                  driDrawPriv);
 475          intelSetSpanFunctions(depthRb, mesaVis);
 476          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 477       }
 478
 479       if (mesaVis->stencilBits > 0 && !swStencil) {
 480          driRenderbuffer *stencilRb
 481             = driNewRenderbuffer(GL_STENCIL_INDEX8_EXT,
 482                                  screen->depth.map,
 483                                  screen->cpp,
 484                                  screen->depth.offset, screen->depth.pitch,
 485                                  driDrawPriv);
 486          intelSetSpanFunctions(stencilRb, mesaVis);
 487          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
 488       }
 489
 490       _mesa_add_soft_renderbuffers(fb,
 491                                    GL_FALSE, /* color */
 492                                    GL_FALSE, /* depth */
 493                                    swStencil,
 494                                    mesaVis->accumRedBits > 0,
 495                                    GL_FALSE, /* alpha */
 496                                    GL_FALSE /* aux */);
 497       driDrawPriv->driverPrivate = (void *) fb;
 498
 499       return (driDrawPriv->driverPrivate != NULL);
 500    }
 501 }
 502
 503 static void intelDestroyBuffer(__DRIdrawablePrivate *driDrawPriv)
 504 {
 505    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 506 }
 507
 508
 509 /**
 510  * Get information about previous buffer swaps.
 511  */
 512 static int
 513 intelGetSwapInfo( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo )
 514 {
 515    struct intel_context *intel;
 516
 517    if ( (dPriv == NULL) || (dPriv->driContextPriv == NULL)
 518         || (dPriv->driContextPriv->driverPrivate == NULL)
 519         || (sInfo == NULL) ) {
 520       return -1;
 521    }
 522
 523    intel = dPriv->driContextPriv->driverPrivate;
 524    sInfo->swap_count = intel->swap_count;
 525    sInfo->swap_ust = intel->swap_ust;
 526    sInfo->swap_missed_count = intel->swap_missed_count;
 527
 528    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 529        ? driCalculateSwapUsage( dPriv, 0, intel->swap_missed_ust )
 530        : 0.0;
 531
 532    return 0;
 533 }
 534
 535
 536 /* There are probably better ways to do this, such as an
 537  * init-designated function to register chipids and createcontext
 538  * functions.
 539  */
 540 extern GLboolean i830CreateContext( const __GLcontextModes *mesaVis,
 541                                     __DRIcontextPrivate *driContextPriv,
 542                                     void *sharedContextPrivate);
 543
 544 extern GLboolean i915CreateContext( const __GLcontextModes *mesaVis,
 545                                    __DRIcontextPrivate *driContextPriv,
 546                                    void *sharedContextPrivate);
 547
 548 extern GLboolean brwCreateContext( const __GLcontextModes *mesaVis,
 549                                    __DRIcontextPrivate *driContextPriv,
 550                                    void *sharedContextPrivate);
 551
 552
 553
 554
 555 static GLboolean intelCreateContext( const __GLcontextModes *mesaVis,
 556                                    __DRIcontextPrivate *driContextPriv,
 557                                    void *sharedContextPrivate)
 558 {
 559 #if 0
 560    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 561    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 562    switch (intelScreen->deviceID) {
 563    case PCI_CHIP_845_G:
 564    case PCI_CHIP_I830_M:
 565    case PCI_CHIP_I855_GM:
 566    case PCI_CHIP_I865_G:
 567       return i830CreateContext( mesaVis, driContextPriv,
 568                                 sharedContextPrivate );
 569
 570    case PCI_CHIP_I915_G:
 571    case PCI_CHIP_I915_GM:
 572    case PCI_CHIP_I945_G:
 573    case PCI_CHIP_I945_GM:
 574       return i915CreateContext( mesaVis, driContextPriv,
 575                                sharedContextPrivate );
 576
 577    default:
 578       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 579       return GL_FALSE;
 580    }
 581 #else
 582    return brwCreateContext( mesaVis, driContextPriv,
 583                             sharedContextPrivate );
 584 #endif
 585 }
 586
 587
 588 static const struct __DriverAPIRec intelAPI = {
 589    .InitDriver      = intelInitDriver,
 590    .DestroyScreen   = intelDestroyScreen,
 591    .CreateContext   = intelCreateContext,
 592    .DestroyContext  = intelDestroyContext,
 593    .CreateBuffer    = intelCreateBuffer,
 594    .DestroyBuffer   = intelDestroyBuffer,
 595    .SwapBuffers     = intelSwapBuffers,
 596    .MakeCurrent     = intelMakeCurrent,
 597    .UnbindContext   = intelUnbindContext,
 598    .GetSwapInfo     = intelGetSwapInfo,
 599    .GetMSC          = driGetMSC32,
 600    .WaitForMSC      = driWaitForMSC32,
 601    .WaitForSBC      = NULL,
 602    .SwapBuffersMSC  = NULL,
 603    .CopySubBuffer   = intelCopySubBuffer
 604 };
 605
 606
 607 static __GLcontextModes *
 608 intelFillInModes( unsigned pixel_bits, unsigned depth_bits,
 609                  unsigned stencil_bits, GLboolean have_back_buffer )
 610 {
 611    __GLcontextModes * modes;
 612    __GLcontextModes * m;
 613    unsigned num_modes;
 614    unsigned depth_buffer_factor;
 615    unsigned back_buffer_factor;
 616    GLenum fb_format;
 617    GLenum fb_type;
 618
 619    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 620     * support pageflipping at all.
 621     */
 622    static const GLenum back_buffer_modes[] = {
 623       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 624    };
 625
 626    u_int8_t depth_bits_array[3];
 627    u_int8_t stencil_bits_array[3];
 628
 629
 630    depth_bits_array[0] = 0;
 631    depth_bits_array[1] = depth_bits;
 632    depth_bits_array[2] = depth_bits;
 633
 634    /* Just like with the accumulation buffer, always provide some modes
 635     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 636     * care about that.
 637     */
 638    stencil_bits_array[0] = 0;
 639    stencil_bits_array[1] = 0;
 640    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 641
 642    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 643    back_buffer_factor  = (have_back_buffer) ? 3 : 1;
 644
 645    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 646
 647     if ( pixel_bits == 16 ) {
 648         fb_format = GL_RGB;
 649         fb_type = GL_UNSIGNED_SHORT_5_6_5;
 650     }
 651     else {
 652         fb_format = GL_BGRA;
 653         fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 654     }
 655
 656    modes = (*dri_interface->createContextModes)( num_modes, sizeof( __GLcontextModes ) );
 657    m = modes;
 658    if ( ! driFillInModes( & m, fb_format, fb_type,
 659                           depth_bits_array, stencil_bits_array, depth_buffer_factor,
 660                           back_buffer_modes, back_buffer_factor,
 661                           GLX_TRUE_COLOR ) ) {
 662         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 663                  __func__, __LINE__ );
 664         return NULL;
 665    }
 666    if ( ! driFillInModes( & m, fb_format, fb_type,
 667                           depth_bits_array, stencil_bits_array, depth_buffer_factor,
 668                           back_buffer_modes, back_buffer_factor,
 669                           GLX_DIRECT_COLOR ) ) {
 670         fprintf( stderr, "[%s:%u] Error creating FBConfig!\n",
 671                  __func__, __LINE__ );
 672         return NULL;
 673    }
 674
 675    /* Mark the visual as slow if there are "fake" stencil bits.
 676     */
 677    for ( m = modes ; m != NULL ; m = m->next ) {
 678       if ( (m->stencilBits != 0) && (m->stencilBits != stencil_bits) ) {
 679          m->visualRating = GLX_SLOW_CONFIG;
 680       }
 681    }
 682
 683    return modes;
 684 }
 685
 686
 687 /**
 688  * This is the bootstrap function for the driver.  libGL supplies all of the
 689  * requisite information about the system, and the driver initializes itself.
 690  * This routine also fills in the linked list pointed to by \c driver_modes
 691  * with the \c __GLcontextModes that the driver can support for windows or
 692  * pbuffers.
 693  *
 694  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 695  *         failure.
 696  */
 697 PUBLIC
 698 void * __driCreateNewScreen_20050727( __DRInativeDisplay *dpy, int scrn, __DRIscreen *psc,
 699                              const __GLcontextModes * modes,
 700                              const __DRIversion * ddx_version,
 701                              const __DRIversion * dri_version,
 702                              const __DRIversion * drm_version,
 703                              const __DRIframebuffer * frame_buffer,
 704                              drmAddress pSAREA, int fd,
 705                              int internal_api_version,
 706                              const __DRIinterfaceMethods * interface,
 707                              __GLcontextModes ** driver_modes )
 708
 709 {
 710    __DRIscreenPrivate *psp;
 711    static const __DRIversion ddx_expected = { 1, 6, 0 };
 712    static const __DRIversion dri_expected = { 4, 0, 0 };
 713    static const __DRIversion drm_expected = { 1, 3, 0 };
 714
 715    dri_interface = interface;
 716
 717    if ( ! driCheckDriDdxDrmVersions2( "i915",
 718                                       dri_version, & dri_expected,
 719                                       ddx_version, & ddx_expected,
 720                                       drm_version, & drm_expected ) ) {
 721       return NULL;
 722    }
 723
 724    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 725                                   ddx_version, dri_version, drm_version,
 726                                   frame_buffer, pSAREA, fd,
 727                                   internal_api_version, &intelAPI);
 728    if ( psp != NULL ) {
 729       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 730       *driver_modes = intelFillInModes( dri_priv->cpp * 8,
 731                                         (dri_priv->cpp == 2) ? 16 : 24,
 732                                         (dri_priv->cpp == 2) ? 0  : 8,
 733                                         GL_TRUE );
 734       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 735        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 736        * the extensions that *might* be enables are known.  This is needed because the
 737        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 738        * enable the extensions until we have a context pointer.
 739        *
 740        * Hello chicken.  Hello egg.  How are you two today?
 741        */
 742       intelInitExtensions(NULL, GL_FALSE);
 743    }
 744
 745    return (void *) psp;
 746 }