src/mesa/drivers/dri/intel/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 #include "intel_bufmgr_ttm.h"
  54
  55 PUBLIC const char __driConfigOptions[] =
  56    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  57    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  58    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  59    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  60    DRI_CONF_FORCE_S3TC_ENABLE(false)
  61    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  62    DRI_CONF_SECTION_END DRI_CONF_END;
  63      const GLuint __driNConfigOptions = 4;
  64
  65 #ifdef USE_NEW_INTERFACE
  66      static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  67 #endif /*USE_NEW_INTERFACE */
  68
  69      extern const struct dri_extension card_extensions[];
  70      extern const struct dri_extension ttm_extensions[];
  71
  72 /**
  73  * Map all the memory regions described by the screen.
  74  * \return GL_TRUE if success, GL_FALSE if error.
  75  */
  76 GLboolean
  77 intelMapScreenRegions(__DRIscreenPrivate * sPriv)
  78 {
  79    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
  80
  81    if (intelScreen->front.handle) {
  82       if (drmMap(sPriv->fd,
  83                  intelScreen->front.handle,
  84                  intelScreen->front.size,
  85                  (drmAddress *) & intelScreen->front.map) != 0) {
  86          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  87          return GL_FALSE;
  88       }
  89    }
  90    else {
  91       _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
  92    }
  93
  94    if (0)
  95       _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
  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 (intelScreen->third.handle) {
 105       if (0)
 106          _mesa_printf("Third 0x%08x ", intelScreen->third.handle);
 107       if (drmMap(sPriv->fd,
 108                  intelScreen->third.handle,
 109                  intelScreen->third.size,
 110                  (drmAddress *) & intelScreen->third.map) != 0) {
 111          intelUnmapScreenRegions(intelScreen);
 112          return GL_FALSE;
 113       }
 114    }
 115
 116    if (0)
 117       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 118    if (drmMap(sPriv->fd,
 119               intelScreen->depth.handle,
 120               intelScreen->depth.size,
 121               (drmAddress *) & intelScreen->depth.map) != 0) {
 122       intelUnmapScreenRegions(intelScreen);
 123       return GL_FALSE;
 124    }
 125
 126    if (0)
 127       _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 128    if (intelScreen->tex.size != 0) {
 129       if (drmMap(sPriv->fd,
 130                  intelScreen->tex.handle,
 131                  intelScreen->tex.size,
 132                  (drmAddress *) & intelScreen->tex.map) != 0) {
 133          intelUnmapScreenRegions(intelScreen);
 134          return GL_FALSE;
 135       }
 136    }
 137
 138    if (0)
 139       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 140              intelScreen->front.map,
 141              intelScreen->back.map, intelScreen->third.map,
 142              intelScreen->depth.map, intelScreen->tex.map);
 143    return GL_TRUE;
 144 }
 145
 146 /** Driver-specific fence emit implementation for the fake memory manager. */
 147 static unsigned int
 148 intel_fence_emit(void *private)
 149 {
 150    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 151    unsigned int fence;
 152
 153    /* XXX: Need to emit a flush, if we haven't already (at least with the
 154     * current batchbuffer implementation, we have).
 155     */
 156
 157    fence = intelEmitIrqLocked(intelScreen);
 158
 159    return fence;
 160 }
 161
 162 /** Driver-specific fence wait implementation for the fake memory manager. */
 163 static int
 164 intel_fence_wait(void *private, unsigned int cookie)
 165 {
 166    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 167
 168    intelWaitIrq(intelScreen, cookie);
 169
 170    return 0;
 171 }
 172
 173 static struct intel_region *
 174 intel_recreate_static(intelScreenPrivate *intelScreen,
 175                       struct intel_region *region,
 176                       intelRegion *region_desc,
 177                       GLuint mem_type)
 178 {
 179   if (region) {
 180     intel_region_update_static(intelScreen, region, mem_type,
 181                                region_desc->bo_handle, region_desc->offset,
 182                                region_desc->map, intelScreen->cpp,
 183                                region_desc->pitch / intelScreen->cpp,
 184                                intelScreen->height);
 185   } else {
 186     region = intel_region_create_static(intelScreen, mem_type,
 187                                         region_desc->bo_handle,
 188                                         region_desc->offset,
 189                                         region_desc->map, intelScreen->cpp,
 190                                         region_desc->pitch / intelScreen->cpp,
 191                                         intelScreen->height);
 192   }
 193
 194   assert(region->buffer != NULL);
 195
 196   return region;
 197 }
 198
 199
 200 /* Create intel_region structs to describe the static front,back,depth
 201  * buffers created by the xserver.
 202  *
 203  * Although FBO's mean we now no longer use these as render targets in
 204  * all circumstances, they won't go away until the back and depth
 205  * buffers become private, and the front buffer will remain even then.
 206  *
 207  * Note that these don't allocate video memory, just describe
 208  * allocations alread made by the X server.
 209  */
 210 static void
 211 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 212 {
 213    intelScreen->front_region =
 214       intel_recreate_static(intelScreen,
 215                             intelScreen->front_region,
 216                             &intelScreen->front,
 217                             DRM_BO_FLAG_MEM_TT);
 218
 219    intelScreen->back_region =
 220       intel_recreate_static(intelScreen,
 221                             intelScreen->back_region,
 222                             &intelScreen->back,
 223                             DRM_BO_FLAG_MEM_TT);
 224
 225    if (intelScreen->third.handle) {
 226       intelScreen->third_region =
 227          intel_recreate_static(intelScreen,
 228                                intelScreen->third_region,
 229                                &intelScreen->third,
 230                                DRM_BO_FLAG_MEM_TT);
 231    }
 232
 233    /* Still assumes front.cpp == depth.cpp.  We can kill this when we move to
 234     * private buffers.
 235     */
 236    intelScreen->depth_region =
 237       intel_recreate_static(intelScreen,
 238                             intelScreen->depth_region,
 239                             &intelScreen->depth,
 240                             DRM_BO_FLAG_MEM_TT);
 241 }
 242
 243 void
 244 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 245 {
 246 #define REALLY_UNMAP 1
 247    if (intelScreen->front.map) {
 248 #if REALLY_UNMAP
 249       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 250          printf("drmUnmap front failed!\n");
 251 #endif
 252       intelScreen->front.map = NULL;
 253    }
 254    if (intelScreen->back.map) {
 255 #if REALLY_UNMAP
 256       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 257          printf("drmUnmap back failed!\n");
 258 #endif
 259       intelScreen->back.map = NULL;
 260    }
 261    if (intelScreen->third.map) {
 262 #if REALLY_UNMAP
 263       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 264          printf("drmUnmap third failed!\n");
 265 #endif
 266       intelScreen->third.map = NULL;
 267    }
 268    if (intelScreen->depth.map) {
 269 #if REALLY_UNMAP
 270       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 271       intelScreen->depth.map = NULL;
 272 #endif
 273    }
 274    if (intelScreen->tex.map) {
 275 #if REALLY_UNMAP
 276       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 277       intelScreen->tex.map = NULL;
 278 #endif
 279    }
 280 }
 281
 282
 283 static void
 284 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 285                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 286 {
 287    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 288            intelScreen->front.size, intelScreen->front.offset,
 289            intelScreen->front.pitch);
 290    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 291            intelScreen->back.size, intelScreen->back.offset,
 292            intelScreen->back.pitch);
 293    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 294            intelScreen->depth.size, intelScreen->depth.offset,
 295            intelScreen->depth.pitch);
 296    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 297            intelScreen->tex.size, intelScreen->tex.offset);
 298    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 299 }
 300
 301
 302 static void
 303 intelPrintSAREA(const drmI830Sarea * sarea)
 304 {
 305    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 306            sarea->height);
 307    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 308    fprintf(stderr,
 309            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 310            sarea->front_offset, sarea->front_size,
 311            (unsigned) sarea->front_handle);
 312    fprintf(stderr,
 313            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 314            sarea->back_offset, sarea->back_size,
 315            (unsigned) sarea->back_handle);
 316    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 317            sarea->depth_offset, sarea->depth_size,
 318            (unsigned) sarea->depth_handle);
 319    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 320            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 321 }
 322
 323
 324 /**
 325  * A number of the screen parameters are obtained/computed from
 326  * information in the SAREA.  This function updates those parameters.
 327  */
 328 void
 329 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 330                            drmI830Sarea * sarea)
 331 {
 332    intelScreen->width = sarea->width;
 333    intelScreen->height = sarea->height;
 334
 335    intelScreen->front.offset = sarea->front_offset;
 336    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 337    intelScreen->front.handle = sarea->front_handle;
 338    intelScreen->front.size = sarea->front_size;
 339
 340    intelScreen->back.offset = sarea->back_offset;
 341    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 342    intelScreen->back.handle = sarea->back_handle;
 343    intelScreen->back.size = sarea->back_size;
 344
 345    if (intelScreen->driScrnPriv->ddx_version.minor >= 8) {
 346       intelScreen->third.offset = sarea->third_offset;
 347       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 348       intelScreen->third.handle = sarea->third_handle;
 349       intelScreen->third.size = sarea->third_size;
 350    }
 351
 352    intelScreen->depth.offset = sarea->depth_offset;
 353    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 354    intelScreen->depth.handle = sarea->depth_handle;
 355    intelScreen->depth.size = sarea->depth_size;
 356
 357    if (intelScreen->driScrnPriv->ddx_version.minor >= 9) {
 358       intelScreen->front.bo_handle = sarea->front_bo_handle;
 359       intelScreen->back.bo_handle = sarea->back_bo_handle;
 360       intelScreen->third.bo_handle = sarea->third_bo_handle;
 361       intelScreen->depth.bo_handle = sarea->depth_bo_handle;
 362    } else {
 363       intelScreen->front.bo_handle = -1;
 364       intelScreen->back.bo_handle = -1;
 365       intelScreen->third.bo_handle = -1;
 366       intelScreen->depth.bo_handle = -1;
 367    }
 368
 369    intelScreen->tex.offset = sarea->tex_offset;
 370    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 371    intelScreen->tex.handle = sarea->tex_handle;
 372    intelScreen->tex.size = sarea->tex_size;
 373
 374    if (0)
 375       intelPrintSAREA(sarea);
 376 }
 377
 378 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 379    { __DRI_TEX_OFFSET },
 380    intelSetTexOffset,
 381 };
 382
 383 static const __DRIextension *intelExtensions[] = {
 384     &driReadDrawableExtension,
 385     &driCopySubBufferExtension.base,
 386     &driSwapControlExtension.base,
 387     &driFrameTrackingExtension.base,
 388     &driMediaStreamCounterExtension.base,
 389     &intelTexOffsetExtension.base,
 390     NULL
 391 };
 392
 393
 394 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 395 {
 396    intelScreenPrivate *intelScreen;
 397    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 398    drmI830Sarea *sarea;
 399
 400    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 401       fprintf(stderr,
 402               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 403       return GL_FALSE;
 404    }
 405
 406    /* Allocate the private area */
 407    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 408    if (!intelScreen) {
 409       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 410       return GL_FALSE;
 411    }
 412    /* parse information in __driConfigOptions */
 413    driParseOptionInfo(&intelScreen->optionCache,
 414                       __driConfigOptions, __driNConfigOptions);
 415
 416    intelScreen->driScrnPriv = sPriv;
 417    sPriv->private = (void *) intelScreen;
 418    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 419    sarea = (drmI830Sarea *)
 420       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 421
 422    intelScreen->deviceID = gDRIPriv->deviceID;
 423    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 424       intelScreen->maxBatchSize = 4096;
 425    else
 426       intelScreen->maxBatchSize = BATCH_SZ;
 427
 428    intelScreen->mem = gDRIPriv->mem;
 429    intelScreen->cpp = gDRIPriv->cpp;
 430
 431    switch (gDRIPriv->bitsPerPixel) {
 432    case 16:
 433       intelScreen->fbFormat = DV_PF_565;
 434       break;
 435    case 32:
 436       intelScreen->fbFormat = DV_PF_8888;
 437       break;
 438    default:
 439       exit(1);
 440       break;
 441    }
 442
 443    intelUpdateScreenFromSAREA(intelScreen, sarea);
 444
 445    if (!intelMapScreenRegions(sPriv)) {
 446       fprintf(stderr, "\nERROR!  mapping regions\n");
 447       _mesa_free(intelScreen);
 448       sPriv->private = NULL;
 449       return GL_FALSE;
 450    }
 451
 452    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 453
 454    if (0)
 455       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 456
 457    intelScreen->drmMinor = sPriv->drm_version.minor;
 458
 459    /* Determine if IRQs are active? */
 460    {
 461       int ret;
 462       drmI830GetParam gp;
 463
 464       gp.param = I830_PARAM_IRQ_ACTIVE;
 465       gp.value = &intelScreen->irq_active;
 466
 467       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 468                                 &gp, sizeof(gp));
 469       if (ret) {
 470          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 471          return GL_FALSE;
 472       }
 473    }
 474
 475    /* Determine if batchbuffers are allowed */
 476    {
 477       int ret;
 478       drmI830GetParam gp;
 479
 480       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 481       gp.value = &intelScreen->allow_batchbuffer;
 482
 483       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 484                                 &gp, sizeof(gp));
 485       if (ret) {
 486          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 487          return GL_FALSE;
 488       }
 489    }
 490
 491    sPriv->extensions = intelExtensions;
 492
 493    /* If we've got a new enough DDX that's initializing TTM and giving us
 494     * object handles for the shared buffers, use that.
 495     */
 496    intelScreen->ttm = GL_FALSE;
 497    if (getenv("INTEL_NO_TTM") == NULL &&
 498        intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 499        intelScreen->drmMinor >= 11 &&
 500        intelScreen->front.bo_handle != -1) {
 501       intelScreen->bufmgr = intel_bufmgr_ttm_init(sPriv->fd,
 502                                                   DRM_FENCE_TYPE_EXE,
 503                                                   DRM_FENCE_TYPE_EXE |
 504                                                   DRM_I915_FENCE_TYPE_RW,
 505                                                   BATCH_SZ);
 506       if (intelScreen->bufmgr != NULL)
 507          intelScreen->ttm = GL_TRUE;
 508    }
 509    /* Otherwise, use the classic buffer manager. */
 510    if (intelScreen->bufmgr == NULL) {
 511       if (intelScreen->tex.size == 0) {
 512          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 513                  __func__, __LINE__);
 514          return GL_FALSE;
 515       }
 516       fprintf(stderr, "[%s:%u] Failed to init TTM buffer manager, falling back"
 517               " to classic.\n", __func__, __LINE__);
 518       intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 519                                                  intelScreen->tex.map,
 520                                                  intelScreen->tex.size,
 521                                                  intel_fence_emit,
 522                                                  intel_fence_wait,
 523                                                  intelScreen);
 524    }
 525
 526    intel_recreate_static_regions(intelScreen);
 527
 528    return GL_TRUE;
 529 }
 530
 531
 532 static void
 533 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 534 {
 535    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 536
 537    intelUnmapScreenRegions(intelScreen);
 538
 539    dri_bufmgr_destroy(intelScreen->bufmgr);
 540    FREE(intelScreen);
 541    sPriv->private = NULL;
 542 }
 543
 544
 545 /**
 546  * This is called when we need to set up GL rendering to a new X window.
 547  */
 548 static GLboolean
 549 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 550                   __DRIdrawablePrivate * driDrawPriv,
 551                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 552 {
 553    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 554
 555    if (isPixmap) {
 556       return GL_FALSE;          /* not implemented */
 557    }
 558    else {
 559       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 560                              mesaVis->depthBits != 24);
 561       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 562
 563       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 564
 565       if (!intel_fb)
 566          return GL_FALSE;
 567
 568       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 569
 570       /* setup the hardware-based renderbuffers */
 571       {
 572          intel_fb->color_rb[0]
 573             = intel_create_renderbuffer(rgbFormat,
 574                                         screen->width, screen->height,
 575                                         screen->front.offset,
 576                                         screen->front.pitch,
 577                                         screen->cpp,
 578                                         screen->front.map);
 579          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 580          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 581                                 &intel_fb->color_rb[0]->Base);
 582       }
 583
 584       if (mesaVis->doubleBufferMode) {
 585          intel_fb->color_rb[1]
 586             = intel_create_renderbuffer(rgbFormat,
 587                                         screen->width, screen->height,
 588                                         screen->back.offset,
 589                                         screen->back.pitch,
 590                                         screen->cpp,
 591                                         screen->back.map);
 592          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 593          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 594                                 &intel_fb->color_rb[1]->Base);
 595
 596          if (screen->third.handle) {
 597             struct gl_renderbuffer *tmp_rb = NULL;
 598
 599             intel_fb->color_rb[2]
 600                = intel_create_renderbuffer(rgbFormat,
 601                                            screen->width, screen->height,
 602                                            screen->third.offset,
 603                                            screen->third.pitch,
 604                                            screen->cpp,
 605                                            screen->third.map);
 606             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 607             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 608          }
 609       }
 610
 611       if (mesaVis->depthBits == 24) {
 612          if (mesaVis->stencilBits == 8) {
 613             /* combined depth/stencil buffer */
 614             struct intel_renderbuffer *depthStencilRb
 615                = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 616                                            screen->width, screen->height,
 617                                            screen->depth.offset,
 618                                            screen->depth.pitch,
 619                                            screen->cpp,    /* 4! */
 620                                            screen->depth.map);
 621             intel_set_span_functions(&depthStencilRb->Base);
 622             /* note: bind RB to two attachment points */
 623             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 624                                    &depthStencilRb->Base);
 625             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 626                                    &depthStencilRb->Base);
 627          } else {
 628             struct intel_renderbuffer *depthRb
 629                = intel_create_renderbuffer(GL_DEPTH_COMPONENT24,
 630                                            screen->width, screen->height,
 631                                            screen->depth.offset,
 632                                            screen->depth.pitch,
 633                                            screen->cpp,    /* 4! */
 634                                            screen->depth.map);
 635             intel_set_span_functions(&depthRb->Base);
 636             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 637                                    &depthRb->Base);
 638          }
 639       }
 640       else if (mesaVis->depthBits == 16) {
 641          /* just 16-bit depth buffer, no hw stencil */
 642          struct intel_renderbuffer *depthRb
 643             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 644                                         screen->width, screen->height,
 645                                         screen->depth.offset,
 646                                         screen->depth.pitch,
 647                                         screen->cpp,    /* 2! */
 648                                         screen->depth.map);
 649          intel_set_span_functions(&depthRb->Base);
 650          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 651       }
 652
 653       /* now add any/all software-based renderbuffers we may need */
 654       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 655                                    GL_FALSE, /* never sw color */
 656                                    GL_FALSE, /* never sw depth */
 657                                    swStencil, mesaVis->accumRedBits > 0,
 658                                    GL_FALSE, /* never sw alpha */
 659                                    GL_FALSE  /* never sw aux */ );
 660       driDrawPriv->driverPrivate = (void *) intel_fb;
 661
 662       return GL_TRUE;
 663    }
 664 }
 665
 666 static void
 667 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 668 {
 669    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 670 }
 671
 672
 673 /**
 674  * Get information about previous buffer swaps.
 675  */
 676 static int
 677 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 678 {
 679    struct intel_framebuffer *intel_fb;
 680
 681    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 682        || (sInfo == NULL)) {
 683       return -1;
 684    }
 685
 686    intel_fb = dPriv->driverPrivate;
 687    sInfo->swap_count = intel_fb->swap_count;
 688    sInfo->swap_ust = intel_fb->swap_ust;
 689    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 690
 691    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 692       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 693       : 0.0;
 694
 695    return 0;
 696 }
 697
 698
 699 /* There are probably better ways to do this, such as an
 700  * init-designated function to register chipids and createcontext
 701  * functions.
 702  */
 703 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 704                                    __DRIcontextPrivate * driContextPriv,
 705                                    void *sharedContextPrivate);
 706
 707 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 708                                    __DRIcontextPrivate * driContextPriv,
 709                                    void *sharedContextPrivate);
 710
 711
 712
 713
 714 static GLboolean
 715 intelCreateContext(const __GLcontextModes * mesaVis,
 716                    __DRIcontextPrivate * driContextPriv,
 717                    void *sharedContextPrivate)
 718 {
 719    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 720    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 721
 722    switch (intelScreen->deviceID) {
 723       /* Don't deal with i830 until texture work complete:
 724        */
 725    case PCI_CHIP_845_G:
 726    case PCI_CHIP_I830_M:
 727    case PCI_CHIP_I855_GM:
 728    case PCI_CHIP_I865_G:
 729       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 730
 731    case PCI_CHIP_I915_G:
 732    case PCI_CHIP_I915_GM:
 733    case PCI_CHIP_I945_G:
 734    case PCI_CHIP_I945_GM:
 735    case PCI_CHIP_I945_GME:
 736    case PCI_CHIP_G33_G:
 737    case PCI_CHIP_Q35_G:
 738    case PCI_CHIP_Q33_G:
 739       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 740
 741    default:
 742       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 743       return GL_FALSE;
 744    }
 745 }
 746
 747
 748 static const struct __DriverAPIRec intelAPI = {
 749    .DestroyScreen = intelDestroyScreen,
 750    .CreateContext = intelCreateContext,
 751    .DestroyContext = intelDestroyContext,
 752    .CreateBuffer = intelCreateBuffer,
 753    .DestroyBuffer = intelDestroyBuffer,
 754    .SwapBuffers = intelSwapBuffers,
 755    .MakeCurrent = intelMakeCurrent,
 756    .UnbindContext = intelUnbindContext,
 757    .GetSwapInfo = intelGetSwapInfo,
 758    .GetMSC = driGetMSC32,
 759    .GetDrawableMSC = driDrawableGetMSC32,
 760    .WaitForMSC = driWaitForMSC32,
 761    .WaitForSBC = NULL,
 762    .SwapBuffersMSC = NULL,
 763    .CopySubBuffer = intelCopySubBuffer,
 764    .setTexOffset = intelSetTexOffset,
 765 };
 766
 767
 768 static __GLcontextModes *
 769 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 770                  unsigned stencil_bits, GLboolean have_back_buffer)
 771 {
 772    __GLcontextModes *modes;
 773    __GLcontextModes *m;
 774    unsigned num_modes;
 775    unsigned depth_buffer_factor;
 776    unsigned back_buffer_factor;
 777    GLenum fb_format;
 778    GLenum fb_type;
 779
 780    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 781     * support pageflipping at all.
 782     */
 783    static const GLenum back_buffer_modes[] = {
 784       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 785    };
 786
 787    u_int8_t depth_bits_array[3];
 788    u_int8_t stencil_bits_array[3];
 789
 790
 791    depth_bits_array[0] = 0;
 792    depth_bits_array[1] = depth_bits;
 793    depth_bits_array[2] = depth_bits;
 794
 795    /* Just like with the accumulation buffer, always provide some modes
 796     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 797     * care about that.
 798     */
 799    stencil_bits_array[0] = 0;
 800    stencil_bits_array[1] = 0;
 801    if (depth_bits == 24)
 802       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 803
 804    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 805
 806    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 807    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 808
 809    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 810
 811    if (pixel_bits == 16) {
 812       fb_format = GL_RGB;
 813       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 814    }
 815    else {
 816       fb_format = GL_BGRA;
 817       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 818    }
 819
 820    modes =
 821       (*dri_interface->createContextModes) (num_modes,
 822                                             sizeof(__GLcontextModes));
 823    m = modes;
 824    if (!driFillInModes(&m, fb_format, fb_type,
 825                        depth_bits_array, stencil_bits_array,
 826                        depth_buffer_factor, back_buffer_modes,
 827                        back_buffer_factor, GLX_TRUE_COLOR)) {
 828       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 829               __LINE__);
 830       return NULL;
 831    }
 832    if (!driFillInModes(&m, fb_format, fb_type,
 833                        depth_bits_array, stencil_bits_array,
 834                        depth_buffer_factor, back_buffer_modes,
 835                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 836       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 837               __LINE__);
 838       return NULL;
 839    }
 840
 841    /* Mark the visual as slow if there are "fake" stencil bits.
 842     */
 843    for (m = modes; m != NULL; m = m->next) {
 844       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 845          m->visualRating = GLX_SLOW_CONFIG;
 846       }
 847    }
 848
 849    return modes;
 850 }
 851
 852
 853 /**
 854  * This is the driver specific part of the createNewScreen entry point.
 855  *
 856  * \todo maybe fold this into intelInitDriver
 857  *
 858  * \return the __GLcontextModes supported by this driver
 859  */
 860 PUBLIC __GLcontextModes *__driDriverInitScreen(__DRIscreenPrivate *psp)
 861 {
 862    static const __DRIversion ddx_expected = { 1, 5, 0 };
 863    static const __DRIversion dri_expected = { 4, 0, 0 };
 864    static const __DRIversion drm_expected = { 1, 5, 0 };
 865    I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 866
 867    psp->DriverAPI = intelAPI;
 868
 869    if (!driCheckDriDdxDrmVersions2("i915",
 870                                    &psp->dri_version, &dri_expected,
 871                                    &psp->ddx_version, &ddx_expected,
 872                                    &psp->drm_version, &drm_expected)) {
 873       return NULL;
 874    }
 875
 876    /* Calling driInitExtensions here, with a NULL context pointer,
 877     * does not actually enable the extensions.  It just makes sure
 878     * that all the dispatch offsets for all the extensions that
 879     * *might* be enables are known.  This is needed because the
 880     * dispatch offsets need to be known when _mesa_context_create is
 881     * called, but we can't enable the extensions until we have a
 882     * context pointer.
 883     *
 884     * Hello chicken.  Hello egg.  How are you two today?
 885     */
 886    driInitExtensions(NULL, card_extensions, GL_FALSE);
 887    driInitExtensions(NULL, ttm_extensions, GL_FALSE);
 888
 889    if (!intelInitDriver(psp))
 890        return NULL;
 891
 892    return intelFillInModes(dri_priv->cpp * 8,
 893                            (dri_priv->cpp == 2) ? 16 : 24,
 894                            (dri_priv->cpp == 2) ? 0  : 8, 1);
 895 }
 896
 897 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 898 {
 899   /*
 900    * This should probably change to have the screen allocate a dummy
 901    * context at screen creation. For now just use the current context.
 902    */
 903
 904   GET_CURRENT_CONTEXT(ctx);
 905   if (ctx == NULL) {
 906      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 907      return NULL;
 908   }
 909   return intel_context(ctx);
 910 }
 911