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                       const char *name,
 176                       struct intel_region *region,
 177                       intelRegion *region_desc,
 178                       GLuint mem_type)
 179 {
 180   if (region) {
 181     intel_region_update_static(intelScreen, region, name, mem_type,
 182                                region_desc->bo_handle, region_desc->offset,
 183                                region_desc->map, intelScreen->cpp,
 184                                region_desc->pitch / intelScreen->cpp,
 185                                intelScreen->height, region_desc->tiled);
 186   } else {
 187     region = intel_region_create_static(intelScreen, name, mem_type,
 188                                         region_desc->bo_handle,
 189                                         region_desc->offset,
 190                                         region_desc->map, intelScreen->cpp,
 191                                         region_desc->pitch / intelScreen->cpp,
 192                                         intelScreen->height,
 193                                         region_desc->tiled);
 194   }
 195
 196   assert(region->buffer != NULL);
 197
 198   return region;
 199 }
 200
 201
 202 /* Create intel_region structs to describe the static front,back,depth
 203  * buffers created by the xserver.
 204  *
 205  * Although FBO's mean we now no longer use these as render targets in
 206  * all circumstances, they won't go away until the back and depth
 207  * buffers become private, and the front buffer will remain even then.
 208  *
 209  * Note that these don't allocate video memory, just describe
 210  * allocations alread made by the X server.
 211  */
 212 static void
 213 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 214 {
 215    intelScreen->front_region =
 216       intel_recreate_static(intelScreen, "front",
 217                             intelScreen->front_region,
 218                             &intelScreen->front,
 219                             DRM_BO_FLAG_MEM_TT);
 220
 221    intelScreen->back_region =
 222       intel_recreate_static(intelScreen, "back",
 223                             intelScreen->back_region,
 224                             &intelScreen->back,
 225                             DRM_BO_FLAG_MEM_TT);
 226
 227    if (intelScreen->third.handle) {
 228       intelScreen->third_region =
 229          intel_recreate_static(intelScreen, "third",
 230                                intelScreen->third_region,
 231                                &intelScreen->third,
 232                                DRM_BO_FLAG_MEM_TT);
 233    }
 234
 235    /* Still assumes front.cpp == depth.cpp.  We can kill this when we move to
 236     * private buffers.
 237     */
 238    intelScreen->depth_region =
 239       intel_recreate_static(intelScreen, "depth",
 240                             intelScreen->depth_region,
 241                             &intelScreen->depth,
 242                             DRM_BO_FLAG_MEM_TT);
 243 }
 244
 245 void
 246 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 247 {
 248 #define REALLY_UNMAP 1
 249    if (intelScreen->front.map) {
 250 #if REALLY_UNMAP
 251       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 252          printf("drmUnmap front failed!\n");
 253 #endif
 254       intelScreen->front.map = NULL;
 255    }
 256    if (intelScreen->back.map) {
 257 #if REALLY_UNMAP
 258       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 259          printf("drmUnmap back failed!\n");
 260 #endif
 261       intelScreen->back.map = NULL;
 262    }
 263    if (intelScreen->third.map) {
 264 #if REALLY_UNMAP
 265       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 266          printf("drmUnmap third failed!\n");
 267 #endif
 268       intelScreen->third.map = NULL;
 269    }
 270    if (intelScreen->depth.map) {
 271 #if REALLY_UNMAP
 272       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 273       intelScreen->depth.map = NULL;
 274 #endif
 275    }
 276    if (intelScreen->tex.map) {
 277 #if REALLY_UNMAP
 278       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 279       intelScreen->tex.map = NULL;
 280 #endif
 281    }
 282 }
 283
 284
 285 static void
 286 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 287                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 288 {
 289    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 290            intelScreen->front.size, intelScreen->front.offset,
 291            intelScreen->front.pitch);
 292    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 293            intelScreen->back.size, intelScreen->back.offset,
 294            intelScreen->back.pitch);
 295    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 296            intelScreen->depth.size, intelScreen->depth.offset,
 297            intelScreen->depth.pitch);
 298    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 299            intelScreen->tex.size, intelScreen->tex.offset);
 300    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 301 }
 302
 303
 304 static void
 305 intelPrintSAREA(const drmI830Sarea * sarea)
 306 {
 307    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 308            sarea->height);
 309    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 310    fprintf(stderr,
 311            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 312            sarea->front_offset, sarea->front_size,
 313            (unsigned) sarea->front_handle);
 314    fprintf(stderr,
 315            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 316            sarea->back_offset, sarea->back_size,
 317            (unsigned) sarea->back_handle);
 318    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 319            sarea->depth_offset, sarea->depth_size,
 320            (unsigned) sarea->depth_handle);
 321    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 322            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 323 }
 324
 325
 326 /**
 327  * A number of the screen parameters are obtained/computed from
 328  * information in the SAREA.  This function updates those parameters.
 329  */
 330 void
 331 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 332                            drmI830Sarea * sarea)
 333 {
 334    intelScreen->width = sarea->width;
 335    intelScreen->height = sarea->height;
 336
 337    intelScreen->front.offset = sarea->front_offset;
 338    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 339    intelScreen->front.handle = sarea->front_handle;
 340    intelScreen->front.size = sarea->front_size;
 341    intelScreen->front.tiled = sarea->front_tiled;
 342
 343    intelScreen->back.offset = sarea->back_offset;
 344    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 345    intelScreen->back.handle = sarea->back_handle;
 346    intelScreen->back.size = sarea->back_size;
 347    intelScreen->back.tiled = sarea->back_tiled;
 348
 349    if (intelScreen->driScrnPriv->ddx_version.minor >= 8) {
 350       intelScreen->third.offset = sarea->third_offset;
 351       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 352       intelScreen->third.handle = sarea->third_handle;
 353       intelScreen->third.size = sarea->third_size;
 354       intelScreen->third.tiled = sarea->third_tiled;
 355    }
 356
 357    intelScreen->depth.offset = sarea->depth_offset;
 358    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 359    intelScreen->depth.handle = sarea->depth_handle;
 360    intelScreen->depth.size = sarea->depth_size;
 361    intelScreen->depth.tiled = sarea->depth_tiled;
 362
 363    if (intelScreen->driScrnPriv->ddx_version.minor >= 9) {
 364       intelScreen->front.bo_handle = sarea->front_bo_handle;
 365       intelScreen->back.bo_handle = sarea->back_bo_handle;
 366       intelScreen->third.bo_handle = sarea->third_bo_handle;
 367       intelScreen->depth.bo_handle = sarea->depth_bo_handle;
 368    } else {
 369       intelScreen->front.bo_handle = -1;
 370       intelScreen->back.bo_handle = -1;
 371       intelScreen->third.bo_handle = -1;
 372       intelScreen->depth.bo_handle = -1;
 373    }
 374
 375    intelScreen->tex.offset = sarea->tex_offset;
 376    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 377    intelScreen->tex.handle = sarea->tex_handle;
 378    intelScreen->tex.size = sarea->tex_size;
 379
 380    if (0)
 381       intelPrintSAREA(sarea);
 382 }
 383
 384 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 385    { __DRI_TEX_OFFSET },
 386    intelSetTexOffset,
 387 };
 388
 389 static const __DRIextension *intelExtensions[] = {
 390     &driReadDrawableExtension,
 391     &driCopySubBufferExtension.base,
 392     &driSwapControlExtension.base,
 393     &driFrameTrackingExtension.base,
 394     &driMediaStreamCounterExtension.base,
 395     &intelTexOffsetExtension.base,
 396     NULL
 397 };
 398
 399
 400 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 401 {
 402    intelScreenPrivate *intelScreen;
 403    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 404    drmI830Sarea *sarea;
 405
 406    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 407       fprintf(stderr,
 408               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 409       return GL_FALSE;
 410    }
 411
 412    /* Allocate the private area */
 413    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 414    if (!intelScreen) {
 415       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 416       return GL_FALSE;
 417    }
 418    /* parse information in __driConfigOptions */
 419    driParseOptionInfo(&intelScreen->optionCache,
 420                       __driConfigOptions, __driNConfigOptions);
 421
 422    intelScreen->driScrnPriv = sPriv;
 423    sPriv->private = (void *) intelScreen;
 424    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 425    sarea = (drmI830Sarea *)
 426       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 427
 428    intelScreen->deviceID = gDRIPriv->deviceID;
 429    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 430       intelScreen->maxBatchSize = 4096;
 431    else
 432       intelScreen->maxBatchSize = BATCH_SZ;
 433
 434    intelScreen->mem = gDRIPriv->mem;
 435    intelScreen->cpp = gDRIPriv->cpp;
 436
 437    switch (gDRIPriv->bitsPerPixel) {
 438    case 16:
 439       intelScreen->fbFormat = DV_PF_565;
 440       break;
 441    case 32:
 442       intelScreen->fbFormat = DV_PF_8888;
 443       break;
 444    default:
 445       exit(1);
 446       break;
 447    }
 448
 449    intelUpdateScreenFromSAREA(intelScreen, sarea);
 450
 451    if (!intelMapScreenRegions(sPriv)) {
 452       fprintf(stderr, "\nERROR!  mapping regions\n");
 453       _mesa_free(intelScreen);
 454       sPriv->private = NULL;
 455       return GL_FALSE;
 456    }
 457
 458    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 459
 460    if (0)
 461       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 462
 463    intelScreen->drmMinor = sPriv->drm_version.minor;
 464
 465    /* Determine if IRQs are active? */
 466    {
 467       int ret;
 468       drmI830GetParam gp;
 469
 470       gp.param = I830_PARAM_IRQ_ACTIVE;
 471       gp.value = &intelScreen->irq_active;
 472
 473       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 474                                 &gp, sizeof(gp));
 475       if (ret) {
 476          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 477          return GL_FALSE;
 478       }
 479    }
 480
 481    /* Determine if batchbuffers are allowed */
 482    {
 483       int ret;
 484       drmI830GetParam gp;
 485
 486       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 487       gp.value = &intelScreen->allow_batchbuffer;
 488
 489       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 490                                 &gp, sizeof(gp));
 491       if (ret) {
 492          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 493          return GL_FALSE;
 494       }
 495    }
 496
 497    sPriv->extensions = intelExtensions;
 498
 499    /* If we've got a new enough DDX that's initializing TTM and giving us
 500     * object handles for the shared buffers, use that.
 501     */
 502    intelScreen->ttm = GL_FALSE;
 503    if (getenv("INTEL_NO_TTM") == NULL &&
 504        intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 505        intelScreen->drmMinor >= 11 &&
 506        intelScreen->front.bo_handle != -1) {
 507       intelScreen->bufmgr = intel_bufmgr_ttm_init(sPriv->fd,
 508                                                   DRM_FENCE_TYPE_EXE,
 509                                                   DRM_FENCE_TYPE_EXE |
 510                                                   DRM_I915_FENCE_TYPE_RW,
 511                                                   BATCH_SZ);
 512       if (intelScreen->bufmgr != NULL)
 513          intelScreen->ttm = GL_TRUE;
 514    }
 515    /* Otherwise, use the classic buffer manager. */
 516    if (intelScreen->bufmgr == NULL) {
 517       if (intelScreen->tex.size == 0) {
 518          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 519                  __func__, __LINE__);
 520          return GL_FALSE;
 521       }
 522       fprintf(stderr, "[%s:%u] Failed to init TTM buffer manager, falling back"
 523               " to classic.\n", __func__, __LINE__);
 524       intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 525                                                  intelScreen->tex.map,
 526                                                  intelScreen->tex.size,
 527                                                  intel_fence_emit,
 528                                                  intel_fence_wait,
 529                                                  intelScreen);
 530    }
 531
 532    intel_recreate_static_regions(intelScreen);
 533
 534    return GL_TRUE;
 535 }
 536
 537
 538 static void
 539 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 540 {
 541    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 542
 543    intelUnmapScreenRegions(intelScreen);
 544
 545    dri_bufmgr_destroy(intelScreen->bufmgr);
 546    FREE(intelScreen);
 547    sPriv->private = NULL;
 548 }
 549
 550
 551 /**
 552  * This is called when we need to set up GL rendering to a new X window.
 553  */
 554 static GLboolean
 555 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 556                   __DRIdrawablePrivate * driDrawPriv,
 557                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 558 {
 559    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 560
 561    if (isPixmap) {
 562       return GL_FALSE;          /* not implemented */
 563    }
 564    else {
 565       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 566                              mesaVis->depthBits != 24);
 567       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 568
 569       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 570
 571       if (!intel_fb)
 572          return GL_FALSE;
 573
 574       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 575
 576       /* setup the hardware-based renderbuffers */
 577       {
 578          intel_fb->color_rb[0]
 579             = intel_create_renderbuffer(rgbFormat,
 580                                         screen->width, screen->height,
 581                                         screen->front.offset,
 582                                         screen->front.pitch,
 583                                         screen->cpp,
 584                                         screen->front.map);
 585          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 586          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 587                                 &intel_fb->color_rb[0]->Base);
 588       }
 589
 590       if (mesaVis->doubleBufferMode) {
 591          intel_fb->color_rb[1]
 592             = intel_create_renderbuffer(rgbFormat,
 593                                         screen->width, screen->height,
 594                                         screen->back.offset,
 595                                         screen->back.pitch,
 596                                         screen->cpp,
 597                                         screen->back.map);
 598          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 599          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 600                                 &intel_fb->color_rb[1]->Base);
 601
 602          if (screen->third.handle) {
 603             struct gl_renderbuffer *tmp_rb = NULL;
 604
 605             intel_fb->color_rb[2]
 606                = intel_create_renderbuffer(rgbFormat,
 607                                            screen->width, screen->height,
 608                                            screen->third.offset,
 609                                            screen->third.pitch,
 610                                            screen->cpp,
 611                                            screen->third.map);
 612             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 613             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 614          }
 615       }
 616
 617       if (mesaVis->depthBits == 24) {
 618          if (mesaVis->stencilBits == 8) {
 619             /* combined depth/stencil buffer */
 620             struct intel_renderbuffer *depthStencilRb
 621                = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 622                                            screen->width, screen->height,
 623                                            screen->depth.offset,
 624                                            screen->depth.pitch,
 625                                            screen->cpp,    /* 4! */
 626                                            screen->depth.map);
 627             intel_set_span_functions(&depthStencilRb->Base);
 628             /* note: bind RB to two attachment points */
 629             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 630                                    &depthStencilRb->Base);
 631             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 632                                    &depthStencilRb->Base);
 633          } else {
 634             struct intel_renderbuffer *depthRb
 635                = intel_create_renderbuffer(GL_DEPTH_COMPONENT24,
 636                                            screen->width, screen->height,
 637                                            screen->depth.offset,
 638                                            screen->depth.pitch,
 639                                            screen->cpp,    /* 4! */
 640                                            screen->depth.map);
 641             intel_set_span_functions(&depthRb->Base);
 642             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 643                                    &depthRb->Base);
 644          }
 645       }
 646       else if (mesaVis->depthBits == 16) {
 647          /* just 16-bit depth buffer, no hw stencil */
 648          struct intel_renderbuffer *depthRb
 649             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 650                                         screen->width, screen->height,
 651                                         screen->depth.offset,
 652                                         screen->depth.pitch,
 653                                         screen->cpp,    /* 2! */
 654                                         screen->depth.map);
 655          intel_set_span_functions(&depthRb->Base);
 656          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 657       }
 658
 659       /* now add any/all software-based renderbuffers we may need */
 660       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 661                                    GL_FALSE, /* never sw color */
 662                                    GL_FALSE, /* never sw depth */
 663                                    swStencil, mesaVis->accumRedBits > 0,
 664                                    GL_FALSE, /* never sw alpha */
 665                                    GL_FALSE  /* never sw aux */ );
 666       driDrawPriv->driverPrivate = (void *) intel_fb;
 667
 668       return GL_TRUE;
 669    }
 670 }
 671
 672 static void
 673 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 674 {
 675    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 676 }
 677
 678
 679 /**
 680  * Get information about previous buffer swaps.
 681  */
 682 static int
 683 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 684 {
 685    struct intel_framebuffer *intel_fb;
 686
 687    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 688        || (sInfo == NULL)) {
 689       return -1;
 690    }
 691
 692    intel_fb = dPriv->driverPrivate;
 693    sInfo->swap_count = intel_fb->swap_count;
 694    sInfo->swap_ust = intel_fb->swap_ust;
 695    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 696
 697    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 698       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 699       : 0.0;
 700
 701    return 0;
 702 }
 703
 704
 705 /* There are probably better ways to do this, such as an
 706  * init-designated function to register chipids and createcontext
 707  * functions.
 708  */
 709 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 710                                    __DRIcontextPrivate * driContextPriv,
 711                                    void *sharedContextPrivate);
 712
 713 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 714                                    __DRIcontextPrivate * driContextPriv,
 715                                    void *sharedContextPrivate);
 716
 717
 718
 719
 720 static GLboolean
 721 intelCreateContext(const __GLcontextModes * mesaVis,
 722                    __DRIcontextPrivate * driContextPriv,
 723                    void *sharedContextPrivate)
 724 {
 725    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 726    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 727
 728    switch (intelScreen->deviceID) {
 729       /* Don't deal with i830 until texture work complete:
 730        */
 731    case PCI_CHIP_845_G:
 732    case PCI_CHIP_I830_M:
 733    case PCI_CHIP_I855_GM:
 734    case PCI_CHIP_I865_G:
 735       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 736
 737    case PCI_CHIP_I915_G:
 738    case PCI_CHIP_I915_GM:
 739    case PCI_CHIP_I945_G:
 740    case PCI_CHIP_I945_GM:
 741    case PCI_CHIP_I945_GME:
 742    case PCI_CHIP_G33_G:
 743    case PCI_CHIP_Q35_G:
 744    case PCI_CHIP_Q33_G:
 745       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 746
 747    default:
 748       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 749       return GL_FALSE;
 750    }
 751 }
 752
 753
 754 static const struct __DriverAPIRec intelAPI = {
 755    .DestroyScreen = intelDestroyScreen,
 756    .CreateContext = intelCreateContext,
 757    .DestroyContext = intelDestroyContext,
 758    .CreateBuffer = intelCreateBuffer,
 759    .DestroyBuffer = intelDestroyBuffer,
 760    .SwapBuffers = intelSwapBuffers,
 761    .MakeCurrent = intelMakeCurrent,
 762    .UnbindContext = intelUnbindContext,
 763    .GetSwapInfo = intelGetSwapInfo,
 764    .GetMSC = driGetMSC32,
 765    .GetDrawableMSC = driDrawableGetMSC32,
 766    .WaitForMSC = driWaitForMSC32,
 767    .WaitForSBC = NULL,
 768    .SwapBuffersMSC = NULL,
 769    .CopySubBuffer = intelCopySubBuffer,
 770    .setTexOffset = intelSetTexOffset,
 771 };
 772
 773
 774 static __GLcontextModes *
 775 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 776                  unsigned stencil_bits, GLboolean have_back_buffer)
 777 {
 778    __GLcontextModes *modes;
 779    __GLcontextModes *m;
 780    unsigned num_modes;
 781    unsigned depth_buffer_factor;
 782    unsigned back_buffer_factor;
 783    GLenum fb_format;
 784    GLenum fb_type;
 785
 786    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 787     * support pageflipping at all.
 788     */
 789    static const GLenum back_buffer_modes[] = {
 790       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 791    };
 792
 793    u_int8_t depth_bits_array[3];
 794    u_int8_t stencil_bits_array[3];
 795
 796
 797    depth_bits_array[0] = 0;
 798    depth_bits_array[1] = depth_bits;
 799    depth_bits_array[2] = depth_bits;
 800
 801    /* Just like with the accumulation buffer, always provide some modes
 802     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 803     * care about that.
 804     */
 805    stencil_bits_array[0] = 0;
 806    stencil_bits_array[1] = 0;
 807    if (depth_bits == 24)
 808       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 809
 810    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 811
 812    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 813    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 814
 815    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 816
 817    if (pixel_bits == 16) {
 818       fb_format = GL_RGB;
 819       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 820    }
 821    else {
 822       fb_format = GL_BGRA;
 823       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 824    }
 825
 826    modes =
 827       (*dri_interface->createContextModes) (num_modes,
 828                                             sizeof(__GLcontextModes));
 829    m = modes;
 830    if (!driFillInModes(&m, fb_format, fb_type,
 831                        depth_bits_array, stencil_bits_array,
 832                        depth_buffer_factor, back_buffer_modes,
 833                        back_buffer_factor, GLX_TRUE_COLOR)) {
 834       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 835               __LINE__);
 836       return NULL;
 837    }
 838    if (!driFillInModes(&m, fb_format, fb_type,
 839                        depth_bits_array, stencil_bits_array,
 840                        depth_buffer_factor, back_buffer_modes,
 841                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 842       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 843               __LINE__);
 844       return NULL;
 845    }
 846
 847    /* Mark the visual as slow if there are "fake" stencil bits.
 848     */
 849    for (m = modes; m != NULL; m = m->next) {
 850       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 851          m->visualRating = GLX_SLOW_CONFIG;
 852       }
 853    }
 854
 855    return modes;
 856 }
 857
 858
 859 /**
 860  * This is the driver specific part of the createNewScreen entry point.
 861  *
 862  * \todo maybe fold this into intelInitDriver
 863  *
 864  * \return the __GLcontextModes supported by this driver
 865  */
 866 PUBLIC __GLcontextModes *__driDriverInitScreen(__DRIscreenPrivate *psp)
 867 {
 868    static const __DRIversion ddx_expected = { 1, 5, 0 };
 869    static const __DRIversion dri_expected = { 4, 0, 0 };
 870    static const __DRIversion drm_expected = { 1, 5, 0 };
 871    I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 872
 873    psp->DriverAPI = intelAPI;
 874
 875    if (!driCheckDriDdxDrmVersions2("i915",
 876                                    &psp->dri_version, &dri_expected,
 877                                    &psp->ddx_version, &ddx_expected,
 878                                    &psp->drm_version, &drm_expected)) {
 879       return NULL;
 880    }
 881
 882    /* Calling driInitExtensions here, with a NULL context pointer,
 883     * does not actually enable the extensions.  It just makes sure
 884     * that all the dispatch offsets for all the extensions that
 885     * *might* be enables are known.  This is needed because the
 886     * dispatch offsets need to be known when _mesa_context_create is
 887     * called, but we can't enable the extensions until we have a
 888     * context pointer.
 889     *
 890     * Hello chicken.  Hello egg.  How are you two today?
 891     */
 892    driInitExtensions(NULL, card_extensions, GL_FALSE);
 893    driInitExtensions(NULL, ttm_extensions, GL_FALSE);
 894
 895    if (!intelInitDriver(psp))
 896        return NULL;
 897
 898    return intelFillInModes(dri_priv->cpp * 8,
 899                            (dri_priv->cpp == 2) ? 16 : 24,
 900                            (dri_priv->cpp == 2) ? 0  : 8, 1);
 901 }
 902
 903 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 904 {
 905   /*
 906    * This should probably change to have the screen allocate a dummy
 907    * context at screen creation. For now just use the current context.
 908    */
 909
 910   GET_CURRENT_CONTEXT(ctx);
 911   if (ctx == NULL) {
 912      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 913      return NULL;
 914   }
 915   return intel_context(ctx);
 916 }
 917