src/mesa/drivers/dri/i915/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_buffers.h"
  42 #include "intel_tex.h"
  43 #include "intel_span.h"
  44 #include "intel_tris.h"
  45 #include "intel_ioctl.h"
  46 #include "intel_fbo.h"
  47
  48 #include "i830_dri.h"
  49 #include "dri_bufmgr.h"
  50 #include "intel_regions.h"
  51 #include "intel_batchbuffer.h"
  52
  53 PUBLIC const char __driConfigOptions[] =
  54    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  55    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  56    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  57    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  58    DRI_CONF_FORCE_S3TC_ENABLE(false)
  59    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  60    DRI_CONF_SECTION_END DRI_CONF_END;
  61      const GLuint __driNConfigOptions = 4;
  62
  63 #ifdef USE_NEW_INTERFACE
  64      static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  65 #endif /*USE_NEW_INTERFACE */
  66
  67      extern const struct dri_extension card_extensions[];
  68
  69 /**
  70  * Map all the memory regions described by the screen.
  71  * \return GL_TRUE if success, GL_FALSE if error.
  72  */
  73 GLboolean
  74 intelMapScreenRegions(__DRIscreenPrivate * sPriv)
  75 {
  76    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
  77
  78    if (intelScreen->front.handle) {
  79       if (drmMap(sPriv->fd,
  80                  intelScreen->front.handle,
  81                  intelScreen->front.size,
  82                  (drmAddress *) & intelScreen->front.map) != 0) {
  83          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  84          return GL_FALSE;
  85       }
  86    }
  87    else {
  88       _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
  89    }
  90
  91    if (0)
  92       _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
  93    if (drmMap(sPriv->fd,
  94               intelScreen->back.handle,
  95               intelScreen->back.size,
  96               (drmAddress *) & intelScreen->back.map) != 0) {
  97       intelUnmapScreenRegions(intelScreen);
  98       return GL_FALSE;
  99    }
 100
 101    if (intelScreen->third.handle) {
 102       if (0)
 103          _mesa_printf("Third 0x%08x ", intelScreen->third.handle);
 104       if (drmMap(sPriv->fd,
 105                  intelScreen->third.handle,
 106                  intelScreen->third.size,
 107                  (drmAddress *) & intelScreen->third.map) != 0) {
 108          intelUnmapScreenRegions(intelScreen);
 109          return GL_FALSE;
 110       }
 111    }
 112
 113    if (0)
 114       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 115    if (drmMap(sPriv->fd,
 116               intelScreen->depth.handle,
 117               intelScreen->depth.size,
 118               (drmAddress *) & intelScreen->depth.map) != 0) {
 119       intelUnmapScreenRegions(intelScreen);
 120       return GL_FALSE;
 121    }
 122
 123    if (0)
 124       _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 125    if (intelScreen->tex.size != 0) {
 126       if (drmMap(sPriv->fd,
 127                  intelScreen->tex.handle,
 128                  intelScreen->tex.size,
 129                  (drmAddress *) & intelScreen->tex.map) != 0) {
 130          intelUnmapScreenRegions(intelScreen);
 131          return GL_FALSE;
 132       }
 133    }
 134
 135    if (0)
 136       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 137              intelScreen->front.map,
 138              intelScreen->back.map, intelScreen->third.map,
 139              intelScreen->depth.map, intelScreen->tex.map);
 140    return GL_TRUE;
 141 }
 142
 143 /** Driver-specific fence emit implementation for the fake memory manager. */
 144 static unsigned int
 145 intel_fence_emit(void *private)
 146 {
 147    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 148    unsigned int fence;
 149
 150    /* XXX: Need to emit a flush, if we haven't already (at least with the
 151     * current batchbuffer implementation, we have).
 152     */
 153
 154    fence = intelEmitIrqLocked(intelScreen);
 155
 156    return fence;
 157 }
 158
 159 /** Driver-specific fence wait implementation for the fake memory manager. */
 160 static int
 161 intel_fence_wait(void *private, unsigned int cookie)
 162 {
 163    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 164
 165    intelWaitIrq(intelScreen, cookie);
 166
 167    return 0;
 168 }
 169
 170 static struct intel_region *
 171 intel_recreate_static(intelScreenPrivate *intelScreen,
 172                       struct intel_region *region,
 173                       intelRegion *region_desc,
 174                       GLuint mem_type)
 175 {
 176   if (region) {
 177     intel_region_update_static(intelScreen, region, mem_type,
 178                                region_desc->bo_handle, region_desc->offset,
 179                                region_desc->map, intelScreen->cpp,
 180                                region_desc->pitch / intelScreen->cpp,
 181                                intelScreen->height);
 182   } else {
 183     region = intel_region_create_static(intelScreen, mem_type,
 184                                         region_desc->bo_handle,
 185                                         region_desc->offset,
 186                                         region_desc->map, intelScreen->cpp,
 187                                         region_desc->pitch / intelScreen->cpp,
 188                                         intelScreen->height);
 189   }
 190
 191   assert(region->buffer != NULL);
 192
 193   return region;
 194 }
 195
 196
 197 /* Create intel_region structs to describe the static front,back,depth
 198  * buffers created by the xserver.
 199  *
 200  * Although FBO's mean we now no longer use these as render targets in
 201  * all circumstances, they won't go away until the back and depth
 202  * buffers become private, and the front and rotated buffers will
 203  * remain even then.
 204  *
 205  * Note that these don't allocate video memory, just describe
 206  * allocations alread made by the X server.
 207  */
 208 static void
 209 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 210 {
 211    intelScreen->front_region =
 212       intel_recreate_static(intelScreen,
 213                             intelScreen->front_region,
 214                             &intelScreen->front,
 215                             DRM_BO_FLAG_MEM_TT);
 216
 217    /* The rotated region is only used for old DDXes that didn't handle rotation
 218 \    * on their own.
 219     */
 220    if (intelScreen->driScrnPriv->ddxMinor < 8) {
 221       intelScreen->rotated_region =
 222          intel_recreate_static(intelScreen,
 223                                intelScreen->rotated_region,
 224                                &intelScreen->rotated,
 225                                DRM_BO_FLAG_MEM_TT);
 226    }
 227
 228    intelScreen->back_region =
 229       intel_recreate_static(intelScreen,
 230                             intelScreen->back_region,
 231                             &intelScreen->back,
 232                             DRM_BO_FLAG_MEM_TT);
 233
 234    if (intelScreen->third.handle) {
 235       intelScreen->third_region =
 236          intel_recreate_static(intelScreen,
 237                                intelScreen->third_region,
 238                                &intelScreen->third,
 239                                DRM_BO_FLAG_MEM_TT);
 240    }
 241
 242    /* Still assumes front.cpp == depth.cpp.  We can kill this when we move to
 243     * private buffers.
 244     */
 245    intelScreen->depth_region =
 246       intel_recreate_static(intelScreen,
 247                             intelScreen->depth_region,
 248                             &intelScreen->depth,
 249                             DRM_BO_FLAG_MEM_TT);
 250 }
 251
 252 /**
 253  * Use the information in the sarea to update the screen parameters
 254  * related to screen rotation. Needs to be called locked.
 255  */
 256 void
 257 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 258 {
 259    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 260
 261    intelUnmapScreenRegions(intelScreen);
 262    intelUpdateScreenFromSAREA(intelScreen, sarea);
 263    if (!intelMapScreenRegions(sPriv)) {
 264       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 265    }
 266    intel_recreate_static_regions(intelScreen);
 267 }
 268
 269
 270 void
 271 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 272 {
 273 #define REALLY_UNMAP 1
 274    if (intelScreen->front.map) {
 275 #if REALLY_UNMAP
 276       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 277          printf("drmUnmap front failed!\n");
 278 #endif
 279       intelScreen->front.map = NULL;
 280    }
 281    if (intelScreen->back.map) {
 282 #if REALLY_UNMAP
 283       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 284          printf("drmUnmap back failed!\n");
 285 #endif
 286       intelScreen->back.map = NULL;
 287    }
 288    if (intelScreen->third.map) {
 289 #if REALLY_UNMAP
 290       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 291          printf("drmUnmap third failed!\n");
 292 #endif
 293       intelScreen->third.map = NULL;
 294    }
 295    if (intelScreen->depth.map) {
 296 #if REALLY_UNMAP
 297       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 298       intelScreen->depth.map = NULL;
 299 #endif
 300    }
 301    if (intelScreen->tex.map) {
 302 #if REALLY_UNMAP
 303       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 304       intelScreen->tex.map = NULL;
 305 #endif
 306    }
 307 }
 308
 309
 310 static void
 311 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 312                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 313 {
 314    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 315            intelScreen->front.size, intelScreen->front.offset,
 316            intelScreen->front.pitch);
 317    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 318            intelScreen->back.size, intelScreen->back.offset,
 319            intelScreen->back.pitch);
 320    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 321            intelScreen->depth.size, intelScreen->depth.offset,
 322            intelScreen->depth.pitch);
 323    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 324            intelScreen->rotated.size, intelScreen->rotated.offset,
 325            intelScreen->rotated.pitch);
 326    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 327            intelScreen->tex.size, intelScreen->tex.offset);
 328    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 329 }
 330
 331
 332 static void
 333 intelPrintSAREA(const drmI830Sarea * sarea)
 334 {
 335    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 336            sarea->height);
 337    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 338    fprintf(stderr,
 339            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 340            sarea->front_offset, sarea->front_size,
 341            (unsigned) sarea->front_handle);
 342    fprintf(stderr,
 343            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 344            sarea->back_offset, sarea->back_size,
 345            (unsigned) sarea->back_handle);
 346    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 347            sarea->depth_offset, sarea->depth_size,
 348            (unsigned) sarea->depth_handle);
 349    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 350            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 351    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 352    fprintf(stderr,
 353            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 354            sarea->rotated_offset, sarea->rotated_size);
 355    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 356 }
 357
 358
 359 /**
 360  * A number of the screen parameters are obtained/computed from
 361  * information in the SAREA.  This function updates those parameters.
 362  */
 363 void
 364 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 365                            drmI830Sarea * sarea)
 366 {
 367    intelScreen->width = sarea->width;
 368    intelScreen->height = sarea->height;
 369
 370    intelScreen->front.offset = sarea->front_offset;
 371    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 372    intelScreen->front.handle = sarea->front_handle;
 373    intelScreen->front.size = sarea->front_size;
 374
 375    intelScreen->back.offset = sarea->back_offset;
 376    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 377    intelScreen->back.handle = sarea->back_handle;
 378    intelScreen->back.size = sarea->back_size;
 379
 380    if (intelScreen->driScrnPriv->ddxMinor >= 8) {
 381       intelScreen->third.offset = sarea->third_offset;
 382       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 383       intelScreen->third.handle = sarea->third_handle;
 384       intelScreen->third.size = sarea->third_size;
 385    }
 386
 387    intelScreen->depth.offset = sarea->depth_offset;
 388    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 389    intelScreen->depth.handle = sarea->depth_handle;
 390    intelScreen->depth.size = sarea->depth_size;
 391
 392    if (intelScreen->driScrnPriv->ddxMinor >= 9) {
 393       intelScreen->front.bo_handle = sarea->front_bo_handle;
 394       intelScreen->back.bo_handle = sarea->back_bo_handle;
 395       intelScreen->third.bo_handle = sarea->third_bo_handle;
 396       intelScreen->depth.bo_handle = sarea->depth_bo_handle;
 397    } else {
 398       intelScreen->front.bo_handle = -1;
 399       intelScreen->back.bo_handle = -1;
 400       intelScreen->third.bo_handle = -1;
 401       intelScreen->depth.bo_handle = -1;
 402    }
 403
 404    intelScreen->tex.offset = sarea->tex_offset;
 405    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 406    intelScreen->tex.handle = sarea->tex_handle;
 407    intelScreen->tex.size = sarea->tex_size;
 408
 409    intelScreen->rotated.offset = sarea->rotated_offset;
 410    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 411    intelScreen->rotated.size = sarea->rotated_size;
 412    intelScreen->current_rotation = sarea->rotation;
 413    matrix23Rotate(&intelScreen->rotMatrix,
 414                   sarea->width, sarea->height, sarea->rotation);
 415    intelScreen->rotatedWidth = sarea->virtualX;
 416    intelScreen->rotatedHeight = sarea->virtualY;
 417
 418    if (0)
 419       intelPrintSAREA(sarea);
 420 }
 421
 422
 423 static GLboolean
 424 intelInitDriver(__DRIscreenPrivate * sPriv)
 425 {
 426    intelScreenPrivate *intelScreen;
 427    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 428    drmI830Sarea *sarea;
 429
 430    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 431       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
 432                                       getProcAddress("glxEnableExtension"));
 433    void *const psc = sPriv->psc->screenConfigs;
 434
 435    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 436       fprintf(stderr,
 437               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 438       return GL_FALSE;
 439    }
 440
 441    /* Allocate the private area */
 442    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 443    if (!intelScreen) {
 444       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 445       return GL_FALSE;
 446    }
 447    /* parse information in __driConfigOptions */
 448    driParseOptionInfo(&intelScreen->optionCache,
 449                       __driConfigOptions, __driNConfigOptions);
 450
 451    intelScreen->driScrnPriv = sPriv;
 452    sPriv->private = (void *) intelScreen;
 453    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 454    sarea = (drmI830Sarea *)
 455       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 456
 457    intelScreen->deviceID = gDRIPriv->deviceID;
 458    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 459       intelScreen->maxBatchSize = 4096;
 460    else
 461       intelScreen->maxBatchSize = BATCH_SZ;
 462
 463    intelScreen->mem = gDRIPriv->mem;
 464    intelScreen->cpp = gDRIPriv->cpp;
 465
 466    switch (gDRIPriv->bitsPerPixel) {
 467    case 16:
 468       intelScreen->fbFormat = DV_PF_565;
 469       break;
 470    case 32:
 471       intelScreen->fbFormat = DV_PF_8888;
 472       break;
 473    default:
 474       exit(1);
 475       break;
 476    }
 477
 478    intelUpdateScreenFromSAREA(intelScreen, sarea);
 479
 480    if (!intelMapScreenRegions(sPriv)) {
 481       fprintf(stderr, "\nERROR!  mapping regions\n");
 482       _mesa_free(intelScreen);
 483       sPriv->private = NULL;
 484       return GL_FALSE;
 485    }
 486
 487    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 488
 489    if (0)
 490       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 491
 492    intelScreen->drmMinor = sPriv->drmMinor;
 493
 494    /* Determine if IRQs are active? */
 495    {
 496       int ret;
 497       drmI830GetParam gp;
 498
 499       gp.param = I830_PARAM_IRQ_ACTIVE;
 500       gp.value = &intelScreen->irq_active;
 501
 502       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 503                                 &gp, sizeof(gp));
 504       if (ret) {
 505          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 506          return GL_FALSE;
 507       }
 508    }
 509
 510    /* Determine if batchbuffers are allowed */
 511    {
 512       int ret;
 513       drmI830GetParam gp;
 514
 515       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 516       gp.value = &intelScreen->allow_batchbuffer;
 517
 518       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 519                                 &gp, sizeof(gp));
 520       if (ret) {
 521          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 522          return GL_FALSE;
 523       }
 524    }
 525
 526    if (glx_enable_extension != NULL) {
 527       (*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 528       (*glx_enable_extension) (psc, "GLX_SGI_video_sync");
 529       (*glx_enable_extension) (psc, "GLX_MESA_swap_control");
 530       (*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
 531       (*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
 532    }
 533
 534    /* If we've got a new enough DDX that's initializing TTM and giving us
 535     * object handles for the shared buffers, use that.
 536     */
 537    intelScreen->ttm = GL_FALSE;
 538    if (getenv("INTEL_NO_TTM") == NULL &&
 539        intelScreen->driScrnPriv->ddxMinor >= 9 &&
 540        intelScreen->front.bo_handle != -1) {
 541       intelScreen->bufmgr = dri_bufmgr_ttm_init(sPriv->fd,
 542                                                 DRM_FENCE_TYPE_EXE,
 543                                                 DRM_FENCE_TYPE_EXE |
 544                                                 DRM_I915_FENCE_TYPE_RW);
 545       if (intelScreen->bufmgr != NULL)
 546          intelScreen->ttm = GL_TRUE;
 547    }
 548    /* Otherwise, use the classic buffer manager. */
 549    if (intelScreen->bufmgr == NULL) {
 550       if (intelScreen->tex.size == 0) {
 551          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 552                  __func__, __LINE__);
 553          return GL_FALSE;
 554       }
 555       fprintf(stderr, "[%s:%u] Failed to init TTM buffer manager, falling back"
 556               " to classic.\n", __func__, __LINE__);
 557       intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 558                                                  intelScreen->tex.map,
 559                                                  intelScreen->tex.size,
 560                                                  intel_fence_emit,
 561                                                  intel_fence_wait,
 562                                                  intelScreen);
 563    }
 564
 565    intel_recreate_static_regions(intelScreen);
 566
 567    return GL_TRUE;
 568 }
 569
 570
 571 static void
 572 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 573 {
 574    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 575
 576    intelUnmapScreenRegions(intelScreen);
 577
 578    dri_bufmgr_destroy(intelScreen->bufmgr);
 579    FREE(intelScreen);
 580    sPriv->private = NULL;
 581 }
 582
 583
 584 /**
 585  * This is called when we need to set up GL rendering to a new X window.
 586  */
 587 static GLboolean
 588 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 589                   __DRIdrawablePrivate * driDrawPriv,
 590                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 591 {
 592    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 593
 594    if (isPixmap) {
 595       return GL_FALSE;          /* not implemented */
 596    }
 597    else {
 598       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 599                              mesaVis->depthBits != 24);
 600       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 601
 602       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 603
 604       if (!intel_fb)
 605          return GL_FALSE;
 606
 607       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 608
 609       /* setup the hardware-based renderbuffers */
 610       {
 611          intel_fb->color_rb[0]
 612             = intel_create_renderbuffer(rgbFormat,
 613                                         screen->width, screen->height,
 614                                         screen->front.offset,
 615                                         screen->front.pitch,
 616                                         screen->cpp,
 617                                         screen->front.map);
 618          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 619          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 620                                 &intel_fb->color_rb[0]->Base);
 621       }
 622
 623       if (mesaVis->doubleBufferMode) {
 624          intel_fb->color_rb[1]
 625             = intel_create_renderbuffer(rgbFormat,
 626                                         screen->width, screen->height,
 627                                         screen->back.offset,
 628                                         screen->back.pitch,
 629                                         screen->cpp,
 630                                         screen->back.map);
 631          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 632          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 633                                 &intel_fb->color_rb[1]->Base);
 634
 635          if (screen->third.handle) {
 636             struct gl_renderbuffer *tmp_rb = NULL;
 637
 638             intel_fb->color_rb[2]
 639                = intel_create_renderbuffer(rgbFormat,
 640                                            screen->width, screen->height,
 641                                            screen->third.offset,
 642                                            screen->third.pitch,
 643                                            screen->cpp,
 644                                            screen->third.map);
 645             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 646             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 647          }
 648       }
 649
 650       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 651          /* combined depth/stencil buffer */
 652          struct intel_renderbuffer *depthStencilRb
 653             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 654                                         screen->width, screen->height,
 655                                         screen->depth.offset,
 656                                         screen->depth.pitch,
 657                                         screen->cpp,    /* 4! */
 658                                         screen->depth.map);
 659          intel_set_span_functions(&depthStencilRb->Base);
 660          /* note: bind RB to two attachment points */
 661          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 662                                 &depthStencilRb->Base);
 663          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 664                                 &depthStencilRb->Base);
 665       }
 666       else if (mesaVis->depthBits == 16) {
 667          /* just 16-bit depth buffer, no hw stencil */
 668          struct intel_renderbuffer *depthRb
 669             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 670                                         screen->width, screen->height,
 671                                         screen->depth.offset,
 672                                         screen->depth.pitch,
 673                                         screen->cpp,    /* 2! */
 674                                         screen->depth.map);
 675          intel_set_span_functions(&depthRb->Base);
 676          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 677       }
 678
 679       /* now add any/all software-based renderbuffers we may need */
 680       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 681                                    GL_FALSE, /* never sw color */
 682                                    GL_FALSE, /* never sw depth */
 683                                    swStencil, mesaVis->accumRedBits > 0,
 684                                    GL_FALSE, /* never sw alpha */
 685                                    GL_FALSE  /* never sw aux */ );
 686       driDrawPriv->driverPrivate = (void *) intel_fb;
 687
 688       return GL_TRUE;
 689    }
 690 }
 691
 692 static void
 693 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 694 {
 695    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 696 }
 697
 698
 699 /**
 700  * Get information about previous buffer swaps.
 701  */
 702 static int
 703 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 704 {
 705    struct intel_framebuffer *intel_fb;
 706
 707    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 708        || (sInfo == NULL)) {
 709       return -1;
 710    }
 711
 712    intel_fb = dPriv->driverPrivate;
 713    sInfo->swap_count = intel_fb->swap_count;
 714    sInfo->swap_ust = intel_fb->swap_ust;
 715    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 716
 717    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 718       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 719       : 0.0;
 720
 721    return 0;
 722 }
 723
 724
 725 /* There are probably better ways to do this, such as an
 726  * init-designated function to register chipids and createcontext
 727  * functions.
 728  */
 729 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 730                                    __DRIcontextPrivate * driContextPriv,
 731                                    void *sharedContextPrivate);
 732
 733 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 734                                    __DRIcontextPrivate * driContextPriv,
 735                                    void *sharedContextPrivate);
 736
 737
 738
 739
 740 static GLboolean
 741 intelCreateContext(const __GLcontextModes * mesaVis,
 742                    __DRIcontextPrivate * driContextPriv,
 743                    void *sharedContextPrivate)
 744 {
 745    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 746    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 747
 748    switch (intelScreen->deviceID) {
 749       /* Don't deal with i830 until texture work complete:
 750        */
 751    case PCI_CHIP_845_G:
 752    case PCI_CHIP_I830_M:
 753    case PCI_CHIP_I855_GM:
 754    case PCI_CHIP_I865_G:
 755       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 756
 757    case PCI_CHIP_I915_G:
 758    case PCI_CHIP_I915_GM:
 759    case PCI_CHIP_I945_G:
 760    case PCI_CHIP_I945_GM:
 761    case PCI_CHIP_I945_GME:
 762    case PCI_CHIP_G33_G:
 763    case PCI_CHIP_Q35_G:
 764    case PCI_CHIP_Q33_G:
 765       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 766
 767    default:
 768       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 769       return GL_FALSE;
 770    }
 771 }
 772
 773
 774 static const struct __DriverAPIRec intelAPI = {
 775    .InitDriver = intelInitDriver,
 776    .DestroyScreen = intelDestroyScreen,
 777    .CreateContext = intelCreateContext,
 778    .DestroyContext = intelDestroyContext,
 779    .CreateBuffer = intelCreateBuffer,
 780    .DestroyBuffer = intelDestroyBuffer,
 781    .SwapBuffers = intelSwapBuffers,
 782    .MakeCurrent = intelMakeCurrent,
 783    .UnbindContext = intelUnbindContext,
 784    .GetSwapInfo = intelGetSwapInfo,
 785    .GetMSC = driGetMSC32,
 786    .WaitForMSC = driWaitForMSC32,
 787    .WaitForSBC = NULL,
 788    .SwapBuffersMSC = NULL,
 789    .CopySubBuffer = intelCopySubBuffer,
 790    .setTexOffset = intelSetTexOffset,
 791 };
 792
 793
 794 static __GLcontextModes *
 795 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 796                  unsigned stencil_bits, GLboolean have_back_buffer)
 797 {
 798    __GLcontextModes *modes;
 799    __GLcontextModes *m;
 800    unsigned num_modes;
 801    unsigned depth_buffer_factor;
 802    unsigned back_buffer_factor;
 803    GLenum fb_format;
 804    GLenum fb_type;
 805
 806    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 807     * support pageflipping at all.
 808     */
 809    static const GLenum back_buffer_modes[] = {
 810       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 811    };
 812
 813    u_int8_t depth_bits_array[3];
 814    u_int8_t stencil_bits_array[3];
 815
 816
 817    depth_bits_array[0] = 0;
 818    depth_bits_array[1] = depth_bits;
 819    depth_bits_array[2] = depth_bits;
 820
 821    /* Just like with the accumulation buffer, always provide some modes
 822     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 823     * care about that.
 824     */
 825    stencil_bits_array[0] = 0;
 826    stencil_bits_array[1] = 0;
 827    if (depth_bits == 24)
 828       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 829
 830    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 831
 832    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 833    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 834
 835    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 836
 837    if (pixel_bits == 16) {
 838       fb_format = GL_RGB;
 839       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 840    }
 841    else {
 842       fb_format = GL_BGRA;
 843       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 844    }
 845
 846    modes =
 847       (*dri_interface->createContextModes) (num_modes,
 848                                             sizeof(__GLcontextModes));
 849    m = modes;
 850    if (!driFillInModes(&m, fb_format, fb_type,
 851                        depth_bits_array, stencil_bits_array,
 852                        depth_buffer_factor, back_buffer_modes,
 853                        back_buffer_factor, GLX_TRUE_COLOR)) {
 854       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 855               __LINE__);
 856       return NULL;
 857    }
 858    if (!driFillInModes(&m, fb_format, fb_type,
 859                        depth_bits_array, stencil_bits_array,
 860                        depth_buffer_factor, back_buffer_modes,
 861                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 862       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 863               __LINE__);
 864       return NULL;
 865    }
 866
 867    /* Mark the visual as slow if there are "fake" stencil bits.
 868     */
 869    for (m = modes; m != NULL; m = m->next) {
 870       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 871          m->visualRating = GLX_SLOW_CONFIG;
 872       }
 873    }
 874
 875    return modes;
 876 }
 877
 878
 879 /**
 880  * This is the bootstrap function for the driver.  libGL supplies all of the
 881  * requisite information about the system, and the driver initializes itself.
 882  * This routine also fills in the linked list pointed to by \c driver_modes
 883  * with the \c __GLcontextModes that the driver can support for windows or
 884  * pbuffers.
 885  *
 886  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 887  *         failure.
 888  */
 889 PUBLIC
 890 void * __DRI_CREATE_NEW_SCREEN(int scrn,
 891                                __DRIscreen * psc,
 892                                const __GLcontextModes * modes,
 893                                const __DRIversion * ddx_version,
 894                                const __DRIversion * dri_version,
 895                                const __DRIversion * drm_version,
 896                                const __DRIframebuffer * frame_buffer,
 897                                drmAddress pSAREA, int fd,
 898                                int internal_api_version,
 899                                const __DRIinterfaceMethods * interface,
 900                                __GLcontextModes ** driver_modes)
 901 {
 902    __DRIscreenPrivate *psp;
 903    static const __DRIversion ddx_expected = { 1, 5, 0 };
 904    static const __DRIversion dri_expected = { 4, 0, 0 };
 905    static const __DRIversion drm_expected = { 1, 5, 0 };
 906
 907    dri_interface = interface;
 908
 909    if (!driCheckDriDdxDrmVersions2("i915",
 910                                    dri_version, &dri_expected,
 911                                    ddx_version, &ddx_expected,
 912                                    drm_version, &drm_expected)) {
 913       return NULL;
 914    }
 915
 916    psp = __driUtilCreateNewScreen(scrn, psc, NULL,
 917                                   ddx_version, dri_version, drm_version,
 918                                   frame_buffer, pSAREA, fd,
 919                                   internal_api_version, &intelAPI);
 920    if (psp != NULL) {
 921       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 922       *driver_modes = intelFillInModes(dri_priv->cpp * 8,
 923                                        (dri_priv->cpp == 2) ? 16 : 24,
 924                                        (dri_priv->cpp == 2) ? 0 : 8, 1);
 925
 926       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 927        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 928        * the extensions that *might* be enables are known.  This is needed because the
 929        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 930        * enable the extensions until we have a context pointer.
 931        *
 932        * Hello chicken.  Hello egg.  How are you two today?
 933        */
 934       driInitExtensions(NULL, card_extensions, GL_FALSE);
 935    }
 936
 937    return (void *) psp;
 938 }
 939
 940 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 941 {
 942   /*
 943    * This should probably change to have the screen allocate a dummy
 944    * context at screen creation. For now just use the current context.
 945    */
 946
 947   GET_CURRENT_CONTEXT(ctx);
 948   if (ctx == NULL) {
 949      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 950      return NULL;
 951   }
 952   return intel_context(ctx);
 953 }
 954