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 #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
  71 /**
  72  * Map all the memory regions described by the screen.
  73  * \return GL_TRUE if success, GL_FALSE if error.
  74  */
  75 GLboolean
  76 intelMapScreenRegions(__DRIscreenPrivate * sPriv)
  77 {
  78    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
  79
  80    if (intelScreen->front.handle) {
  81       if (drmMap(sPriv->fd,
  82                  intelScreen->front.handle,
  83                  intelScreen->front.size,
  84                  (drmAddress *) & intelScreen->front.map) != 0) {
  85          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  86          return GL_FALSE;
  87       }
  88    }
  89    else {
  90       _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
  91    }
  92
  93    if (0)
  94       _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
  95    if (drmMap(sPriv->fd,
  96               intelScreen->back.handle,
  97               intelScreen->back.size,
  98               (drmAddress *) & intelScreen->back.map) != 0) {
  99       intelUnmapScreenRegions(intelScreen);
 100       return GL_FALSE;
 101    }
 102
 103    if (intelScreen->third.handle) {
 104       if (0)
 105          _mesa_printf("Third 0x%08x ", intelScreen->third.handle);
 106       if (drmMap(sPriv->fd,
 107                  intelScreen->third.handle,
 108                  intelScreen->third.size,
 109                  (drmAddress *) & intelScreen->third.map) != 0) {
 110          intelUnmapScreenRegions(intelScreen);
 111          return GL_FALSE;
 112       }
 113    }
 114
 115    if (0)
 116       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 117    if (drmMap(sPriv->fd,
 118               intelScreen->depth.handle,
 119               intelScreen->depth.size,
 120               (drmAddress *) & intelScreen->depth.map) != 0) {
 121       intelUnmapScreenRegions(intelScreen);
 122       return GL_FALSE;
 123    }
 124
 125    if (0)
 126       _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 127    if (intelScreen->tex.size != 0) {
 128       if (drmMap(sPriv->fd,
 129                  intelScreen->tex.handle,
 130                  intelScreen->tex.size,
 131                  (drmAddress *) & intelScreen->tex.map) != 0) {
 132          intelUnmapScreenRegions(intelScreen);
 133          return GL_FALSE;
 134       }
 135    }
 136
 137    if (0)
 138       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 139              intelScreen->front.map,
 140              intelScreen->back.map, intelScreen->third.map,
 141              intelScreen->depth.map, intelScreen->tex.map);
 142    return GL_TRUE;
 143 }
 144
 145 /** Driver-specific fence emit implementation for the fake memory manager. */
 146 static unsigned int
 147 intel_fence_emit(void *private)
 148 {
 149    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 150    unsigned int fence;
 151
 152    /* XXX: Need to emit a flush, if we haven't already (at least with the
 153     * current batchbuffer implementation, we have).
 154     */
 155
 156    fence = intelEmitIrqLocked(intelScreen);
 157
 158    return fence;
 159 }
 160
 161 /** Driver-specific fence wait implementation for the fake memory manager. */
 162 static int
 163 intel_fence_wait(void *private, unsigned int cookie)
 164 {
 165    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 166
 167    intelWaitIrq(intelScreen, cookie);
 168
 169    return 0;
 170 }
 171
 172 static struct intel_region *
 173 intel_recreate_static(intelScreenPrivate *intelScreen,
 174                       struct intel_region *region,
 175                       intelRegion *region_desc,
 176                       GLuint mem_type)
 177 {
 178   if (region) {
 179     intel_region_update_static(intelScreen, region, mem_type,
 180                                region_desc->bo_handle, region_desc->offset,
 181                                region_desc->map, intelScreen->cpp,
 182                                region_desc->pitch / intelScreen->cpp,
 183                                intelScreen->height);
 184   } else {
 185     region = intel_region_create_static(intelScreen, mem_type,
 186                                         region_desc->bo_handle,
 187                                         region_desc->offset,
 188                                         region_desc->map, intelScreen->cpp,
 189                                         region_desc->pitch / intelScreen->cpp,
 190                                         intelScreen->height);
 191   }
 192
 193   assert(region->buffer != NULL);
 194
 195   return region;
 196 }
 197
 198
 199 /* Create intel_region structs to describe the static front,back,depth
 200  * buffers created by the xserver.
 201  *
 202  * Although FBO's mean we now no longer use these as render targets in
 203  * all circumstances, they won't go away until the back and depth
 204  * buffers become private, and the front and rotated buffers will
 205  * 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    /* The rotated region is only used for old DDXes that didn't handle rotation
 220 \    * on their own.
 221     */
 222    if (intelScreen->driScrnPriv->ddx_version.minor < 8) {
 223       intelScreen->rotated_region =
 224          intel_recreate_static(intelScreen,
 225                                intelScreen->rotated_region,
 226                                &intelScreen->rotated,
 227                                DRM_BO_FLAG_MEM_TT);
 228    }
 229
 230    intelScreen->back_region =
 231       intel_recreate_static(intelScreen,
 232                             intelScreen->back_region,
 233                             &intelScreen->back,
 234                             DRM_BO_FLAG_MEM_TT);
 235
 236    if (intelScreen->third.handle) {
 237       intelScreen->third_region =
 238          intel_recreate_static(intelScreen,
 239                                intelScreen->third_region,
 240                                &intelScreen->third,
 241                                DRM_BO_FLAG_MEM_TT);
 242    }
 243
 244    /* Still assumes front.cpp == depth.cpp.  We can kill this when we move to
 245     * private buffers.
 246     */
 247    intelScreen->depth_region =
 248       intel_recreate_static(intelScreen,
 249                             intelScreen->depth_region,
 250                             &intelScreen->depth,
 251                             DRM_BO_FLAG_MEM_TT);
 252 }
 253
 254 /**
 255  * Use the information in the sarea to update the screen parameters
 256  * related to screen rotation. Needs to be called locked.
 257  */
 258 void
 259 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 260 {
 261    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 262
 263    intelUnmapScreenRegions(intelScreen);
 264    intelUpdateScreenFromSAREA(intelScreen, sarea);
 265    if (!intelMapScreenRegions(sPriv)) {
 266       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 267    }
 268    intel_recreate_static_regions(intelScreen);
 269 }
 270
 271
 272 void
 273 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 274 {
 275 #define REALLY_UNMAP 1
 276    if (intelScreen->front.map) {
 277 #if REALLY_UNMAP
 278       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 279          printf("drmUnmap front failed!\n");
 280 #endif
 281       intelScreen->front.map = NULL;
 282    }
 283    if (intelScreen->back.map) {
 284 #if REALLY_UNMAP
 285       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 286          printf("drmUnmap back failed!\n");
 287 #endif
 288       intelScreen->back.map = NULL;
 289    }
 290    if (intelScreen->third.map) {
 291 #if REALLY_UNMAP
 292       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 293          printf("drmUnmap third failed!\n");
 294 #endif
 295       intelScreen->third.map = NULL;
 296    }
 297    if (intelScreen->depth.map) {
 298 #if REALLY_UNMAP
 299       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 300       intelScreen->depth.map = NULL;
 301 #endif
 302    }
 303    if (intelScreen->tex.map) {
 304 #if REALLY_UNMAP
 305       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 306       intelScreen->tex.map = NULL;
 307 #endif
 308    }
 309 }
 310
 311
 312 static void
 313 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 314                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 315 {
 316    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 317            intelScreen->front.size, intelScreen->front.offset,
 318            intelScreen->front.pitch);
 319    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 320            intelScreen->back.size, intelScreen->back.offset,
 321            intelScreen->back.pitch);
 322    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 323            intelScreen->depth.size, intelScreen->depth.offset,
 324            intelScreen->depth.pitch);
 325    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 326            intelScreen->rotated.size, intelScreen->rotated.offset,
 327            intelScreen->rotated.pitch);
 328    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 329            intelScreen->tex.size, intelScreen->tex.offset);
 330    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 331 }
 332
 333
 334 static void
 335 intelPrintSAREA(const drmI830Sarea * sarea)
 336 {
 337    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 338            sarea->height);
 339    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 340    fprintf(stderr,
 341            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 342            sarea->front_offset, sarea->front_size,
 343            (unsigned) sarea->front_handle);
 344    fprintf(stderr,
 345            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 346            sarea->back_offset, sarea->back_size,
 347            (unsigned) sarea->back_handle);
 348    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 349            sarea->depth_offset, sarea->depth_size,
 350            (unsigned) sarea->depth_handle);
 351    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 352            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 353    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 354    fprintf(stderr,
 355            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 356            sarea->rotated_offset, sarea->rotated_size);
 357    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 358 }
 359
 360
 361 /**
 362  * A number of the screen parameters are obtained/computed from
 363  * information in the SAREA.  This function updates those parameters.
 364  */
 365 void
 366 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 367                            drmI830Sarea * sarea)
 368 {
 369    intelScreen->width = sarea->width;
 370    intelScreen->height = sarea->height;
 371
 372    intelScreen->front.offset = sarea->front_offset;
 373    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 374    intelScreen->front.handle = sarea->front_handle;
 375    intelScreen->front.size = sarea->front_size;
 376
 377    intelScreen->back.offset = sarea->back_offset;
 378    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 379    intelScreen->back.handle = sarea->back_handle;
 380    intelScreen->back.size = sarea->back_size;
 381
 382    if (intelScreen->driScrnPriv->ddx_version.minor >= 8) {
 383       intelScreen->third.offset = sarea->third_offset;
 384       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 385       intelScreen->third.handle = sarea->third_handle;
 386       intelScreen->third.size = sarea->third_size;
 387    }
 388
 389    intelScreen->depth.offset = sarea->depth_offset;
 390    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 391    intelScreen->depth.handle = sarea->depth_handle;
 392    intelScreen->depth.size = sarea->depth_size;
 393
 394    if (intelScreen->driScrnPriv->ddx_version.minor >= 9) {
 395       intelScreen->front.bo_handle = sarea->front_bo_handle;
 396       intelScreen->back.bo_handle = sarea->back_bo_handle;
 397       intelScreen->third.bo_handle = sarea->third_bo_handle;
 398       intelScreen->depth.bo_handle = sarea->depth_bo_handle;
 399    } else {
 400       intelScreen->front.bo_handle = -1;
 401       intelScreen->back.bo_handle = -1;
 402       intelScreen->third.bo_handle = -1;
 403       intelScreen->depth.bo_handle = -1;
 404    }
 405
 406    intelScreen->tex.offset = sarea->tex_offset;
 407    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 408    intelScreen->tex.handle = sarea->tex_handle;
 409    intelScreen->tex.size = sarea->tex_size;
 410
 411    intelScreen->rotated.offset = sarea->rotated_offset;
 412    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 413    intelScreen->rotated.size = sarea->rotated_size;
 414    intelScreen->current_rotation = sarea->rotation;
 415    matrix23Rotate(&intelScreen->rotMatrix,
 416                   sarea->width, sarea->height, sarea->rotation);
 417    intelScreen->rotatedWidth = sarea->virtualX;
 418    intelScreen->rotatedHeight = sarea->virtualY;
 419
 420    if (0)
 421       intelPrintSAREA(sarea);
 422 }
 423
 424 static const __DRIextension *intelExtensions[] = {
 425     &driReadDrawableExtension,
 426     &driCopySubBufferExtension.base,
 427     &driSwapControlExtension.base,
 428     &driFrameTrackingExtension.base,
 429     &driMediaStreamCounterExtension.base,
 430     NULL
 431 };
 432
 433
 434 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 435 {
 436    intelScreenPrivate *intelScreen;
 437    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 438    drmI830Sarea *sarea;
 439
 440    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 441       fprintf(stderr,
 442               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 443       return GL_FALSE;
 444    }
 445
 446    /* Allocate the private area */
 447    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 448    if (!intelScreen) {
 449       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 450       return GL_FALSE;
 451    }
 452    /* parse information in __driConfigOptions */
 453    driParseOptionInfo(&intelScreen->optionCache,
 454                       __driConfigOptions, __driNConfigOptions);
 455
 456    intelScreen->driScrnPriv = sPriv;
 457    sPriv->private = (void *) intelScreen;
 458    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 459    sarea = (drmI830Sarea *)
 460       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 461
 462    intelScreen->deviceID = gDRIPriv->deviceID;
 463    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 464       intelScreen->maxBatchSize = 4096;
 465    else
 466       intelScreen->maxBatchSize = BATCH_SZ;
 467
 468    intelScreen->mem = gDRIPriv->mem;
 469    intelScreen->cpp = gDRIPriv->cpp;
 470
 471    switch (gDRIPriv->bitsPerPixel) {
 472    case 16:
 473       intelScreen->fbFormat = DV_PF_565;
 474       break;
 475    case 32:
 476       intelScreen->fbFormat = DV_PF_8888;
 477       break;
 478    default:
 479       exit(1);
 480       break;
 481    }
 482
 483    intelUpdateScreenFromSAREA(intelScreen, sarea);
 484
 485    if (!intelMapScreenRegions(sPriv)) {
 486       fprintf(stderr, "\nERROR!  mapping regions\n");
 487       _mesa_free(intelScreen);
 488       sPriv->private = NULL;
 489       return GL_FALSE;
 490    }
 491
 492    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 493
 494    if (0)
 495       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 496
 497    intelScreen->drmMinor = sPriv->drm_version.minor;
 498
 499    /* Determine if IRQs are active? */
 500    {
 501       int ret;
 502       drmI830GetParam gp;
 503
 504       gp.param = I830_PARAM_IRQ_ACTIVE;
 505       gp.value = &intelScreen->irq_active;
 506
 507       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 508                                 &gp, sizeof(gp));
 509       if (ret) {
 510          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 511          return GL_FALSE;
 512       }
 513    }
 514
 515    /* Determine if batchbuffers are allowed */
 516    {
 517       int ret;
 518       drmI830GetParam gp;
 519
 520       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 521       gp.value = &intelScreen->allow_batchbuffer;
 522
 523       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 524                                 &gp, sizeof(gp));
 525       if (ret) {
 526          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 527          return GL_FALSE;
 528       }
 529    }
 530
 531    sPriv->extensions = intelExtensions;
 532
 533    /* If we've got a new enough DDX that's initializing TTM and giving us
 534     * object handles for the shared buffers, use that.
 535     */
 536    intelScreen->ttm = GL_FALSE;
 537    if (getenv("INTEL_NO_TTM") == NULL &&
 538        intelScreen->driScrnPriv->ddx_version.minor >= 9 &&
 539        intelScreen->drmMinor >= 11 &&
 540        intelScreen->front.bo_handle != -1) {
 541       intelScreen->bufmgr = intel_bufmgr_ttm_init(sPriv->fd,
 542                                                   DRM_FENCE_TYPE_EXE,
 543                                                   DRM_FENCE_TYPE_EXE |
 544                                                   DRM_I915_FENCE_TYPE_RW,
 545                                                   BATCH_SZ);
 546       if (intelScreen->bufmgr != NULL)
 547          intelScreen->ttm = GL_TRUE;
 548    }
 549    /* Otherwise, use the classic buffer manager. */
 550    if (intelScreen->bufmgr == NULL) {
 551       if (intelScreen->tex.size == 0) {
 552          fprintf(stderr, "[%s:%u] Error initializing buffer manager.\n",
 553                  __func__, __LINE__);
 554          return GL_FALSE;
 555       }
 556       fprintf(stderr, "[%s:%u] Failed to init TTM buffer manager, falling back"
 557               " to classic.\n", __func__, __LINE__);
 558       intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 559                                                  intelScreen->tex.map,
 560                                                  intelScreen->tex.size,
 561                                                  intel_fence_emit,
 562                                                  intel_fence_wait,
 563                                                  intelScreen);
 564    }
 565
 566    intel_recreate_static_regions(intelScreen);
 567
 568    return GL_TRUE;
 569 }
 570
 571
 572 static void
 573 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 574 {
 575    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 576
 577    intelUnmapScreenRegions(intelScreen);
 578
 579    dri_bufmgr_destroy(intelScreen->bufmgr);
 580    FREE(intelScreen);
 581    sPriv->private = NULL;
 582 }
 583
 584
 585 /**
 586  * This is called when we need to set up GL rendering to a new X window.
 587  */
 588 static GLboolean
 589 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 590                   __DRIdrawablePrivate * driDrawPriv,
 591                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 592 {
 593    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 594
 595    if (isPixmap) {
 596       return GL_FALSE;          /* not implemented */
 597    }
 598    else {
 599       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 600                              mesaVis->depthBits != 24);
 601       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 602
 603       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 604
 605       if (!intel_fb)
 606          return GL_FALSE;
 607
 608       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 609
 610       /* setup the hardware-based renderbuffers */
 611       {
 612          intel_fb->color_rb[0]
 613             = intel_create_renderbuffer(rgbFormat,
 614                                         screen->width, screen->height,
 615                                         screen->front.offset,
 616                                         screen->front.pitch,
 617                                         screen->cpp,
 618                                         screen->front.map);
 619          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 620          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 621                                 &intel_fb->color_rb[0]->Base);
 622       }
 623
 624       if (mesaVis->doubleBufferMode) {
 625          intel_fb->color_rb[1]
 626             = intel_create_renderbuffer(rgbFormat,
 627                                         screen->width, screen->height,
 628                                         screen->back.offset,
 629                                         screen->back.pitch,
 630                                         screen->cpp,
 631                                         screen->back.map);
 632          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 633          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 634                                 &intel_fb->color_rb[1]->Base);
 635
 636          if (screen->third.handle) {
 637             struct gl_renderbuffer *tmp_rb = NULL;
 638
 639             intel_fb->color_rb[2]
 640                = intel_create_renderbuffer(rgbFormat,
 641                                            screen->width, screen->height,
 642                                            screen->third.offset,
 643                                            screen->third.pitch,
 644                                            screen->cpp,
 645                                            screen->third.map);
 646             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 647             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 648          }
 649       }
 650
 651       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 652          /* combined depth/stencil buffer */
 653          struct intel_renderbuffer *depthStencilRb
 654             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 655                                         screen->width, screen->height,
 656                                         screen->depth.offset,
 657                                         screen->depth.pitch,
 658                                         screen->cpp,    /* 4! */
 659                                         screen->depth.map);
 660          intel_set_span_functions(&depthStencilRb->Base);
 661          /* note: bind RB to two attachment points */
 662          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 663                                 &depthStencilRb->Base);
 664          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 665                                 &depthStencilRb->Base);
 666       }
 667       else if (mesaVis->depthBits == 16) {
 668          /* just 16-bit depth buffer, no hw stencil */
 669          struct intel_renderbuffer *depthRb
 670             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 671                                         screen->width, screen->height,
 672                                         screen->depth.offset,
 673                                         screen->depth.pitch,
 674                                         screen->cpp,    /* 2! */
 675                                         screen->depth.map);
 676          intel_set_span_functions(&depthRb->Base);
 677          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 678       }
 679
 680       /* now add any/all software-based renderbuffers we may need */
 681       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 682                                    GL_FALSE, /* never sw color */
 683                                    GL_FALSE, /* never sw depth */
 684                                    swStencil, mesaVis->accumRedBits > 0,
 685                                    GL_FALSE, /* never sw alpha */
 686                                    GL_FALSE  /* never sw aux */ );
 687       driDrawPriv->driverPrivate = (void *) intel_fb;
 688
 689       return GL_TRUE;
 690    }
 691 }
 692
 693 static void
 694 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 695 {
 696    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 697 }
 698
 699
 700 /**
 701  * Get information about previous buffer swaps.
 702  */
 703 static int
 704 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 705 {
 706    struct intel_framebuffer *intel_fb;
 707
 708    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 709        || (sInfo == NULL)) {
 710       return -1;
 711    }
 712
 713    intel_fb = dPriv->driverPrivate;
 714    sInfo->swap_count = intel_fb->swap_count;
 715    sInfo->swap_ust = intel_fb->swap_ust;
 716    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 717
 718    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 719       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 720       : 0.0;
 721
 722    return 0;
 723 }
 724
 725
 726 /* There are probably better ways to do this, such as an
 727  * init-designated function to register chipids and createcontext
 728  * functions.
 729  */
 730 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 731                                    __DRIcontextPrivate * driContextPriv,
 732                                    void *sharedContextPrivate);
 733
 734 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 735                                    __DRIcontextPrivate * driContextPriv,
 736                                    void *sharedContextPrivate);
 737
 738
 739
 740
 741 static GLboolean
 742 intelCreateContext(const __GLcontextModes * mesaVis,
 743                    __DRIcontextPrivate * driContextPriv,
 744                    void *sharedContextPrivate)
 745 {
 746    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 747    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 748
 749    switch (intelScreen->deviceID) {
 750       /* Don't deal with i830 until texture work complete:
 751        */
 752    case PCI_CHIP_845_G:
 753    case PCI_CHIP_I830_M:
 754    case PCI_CHIP_I855_GM:
 755    case PCI_CHIP_I865_G:
 756       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 757
 758    case PCI_CHIP_I915_G:
 759    case PCI_CHIP_I915_GM:
 760    case PCI_CHIP_I945_G:
 761    case PCI_CHIP_I945_GM:
 762    case PCI_CHIP_I945_GME:
 763    case PCI_CHIP_G33_G:
 764    case PCI_CHIP_Q35_G:
 765    case PCI_CHIP_Q33_G:
 766       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 767
 768    default:
 769       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 770       return GL_FALSE;
 771    }
 772 }
 773
 774
 775 static const struct __DriverAPIRec intelAPI = {
 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 driver specific part of the createNewScreen entry point.
 881  *
 882  * \todo maybe fold this into intelInitDriver
 883  *
 884  * \return the __GLcontextModes supported by this driver
 885  */
 886 PUBLIC __GLcontextModes *__driDriverInitScreen(__DRIscreenPrivate *psp)
 887 {
 888    static const __DRIversion ddx_expected = { 1, 5, 0 };
 889    static const __DRIversion dri_expected = { 4, 0, 0 };
 890    static const __DRIversion drm_expected = { 1, 5, 0 };
 891    I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 892
 893    psp->DriverAPI = intelAPI;
 894
 895    if (!driCheckDriDdxDrmVersions2("i915",
 896                                    &psp->dri_version, &dri_expected,
 897                                    &psp->ddx_version, &ddx_expected,
 898                                    &psp->drm_version, &drm_expected)) {
 899       return NULL;
 900    }
 901
 902    /* Calling driInitExtensions here, with a NULL context pointer,
 903     * does not actually enable the extensions.  It just makes sure
 904     * that all the dispatch offsets for all the extensions that
 905     * *might* be enables are known.  This is needed because the
 906     * dispatch offsets need to be known when _mesa_context_create is
 907     * called, but we can't enable the extensions until we have a
 908     * context pointer.
 909     *
 910     * Hello chicken.  Hello egg.  How are you two today?
 911     */
 912    driInitExtensions(NULL, card_extensions, GL_FALSE);
 913
 914    if (!intelInitDriver(psp))
 915        return NULL;
 916
 917    return intelFillInModes(dri_priv->cpp * 8,
 918                            (dri_priv->cpp == 2) ? 16 : 24,
 919                            (dri_priv->cpp == 2) ? 0  : 8, 1);
 920 }
 921
 922 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 923 {
 924   /*
 925    * This should probably change to have the screen allocate a dummy
 926    * context at screen creation. For now just use the current context.
 927    */
 928
 929   GET_CURRENT_CONTEXT(ctx);
 930   if (ctx == NULL) {
 931      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 932      return NULL;
 933   }
 934   return intel_context(ctx);
 935 }
 936