src/mesa/drivers/dri/i915tex/intel_screen.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include "glheader.h"
  29 #include "context.h"
  30 #include "framebuffer.h"
  31 #include "matrix.h"
  32 #include "renderbuffer.h"
  33 #include "simple_list.h"
  34 #include "utils.h"
  35 #include "vblank.h"
  36 #include "xmlpool.h"
  37
  38
  39 #include "intel_screen.h"
  40
  41 #include "intel_buffers.h"
  42 #include "intel_tex.h"
  43 #include "intel_span.h"
  44 #include "intel_tris.h"
  45 #include "intel_ioctl.h"
  46 #include "intel_fbo.h"
  47
  48 #include "i830_dri.h"
  49 #include "dri_bufmgr.h"
  50 #include "intel_regions.h"
  51 #include "intel_batchbuffer.h"
  52
  53 PUBLIC const char __driConfigOptions[] =
  54    DRI_CONF_BEGIN DRI_CONF_SECTION_PERFORMANCE
  55    DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  56    DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  57    DRI_CONF_SECTION_END DRI_CONF_SECTION_QUALITY
  58    DRI_CONF_FORCE_S3TC_ENABLE(false)
  59    DRI_CONF_ALLOW_LARGE_TEXTURES(1)
  60    DRI_CONF_SECTION_END DRI_CONF_END;
  61      const GLuint __driNConfigOptions = 4;
  62
  63 #ifdef USE_NEW_INTERFACE
  64      static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  65 #endif /*USE_NEW_INTERFACE */
  66
  67      extern const struct dri_extension card_extensions[];
  68
  69 /**
  70  * Map all the memory regions described by the screen.
  71  * \return GL_TRUE if success, GL_FALSE if error.
  72  */
  73 GLboolean
  74 intelMapScreenRegions(__DRIscreenPrivate * sPriv)
  75 {
  76    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
  77
  78    if (intelScreen->front.handle) {
  79       if (drmMap(sPriv->fd,
  80                  intelScreen->front.handle,
  81                  intelScreen->front.size,
  82                  (drmAddress *) & intelScreen->front.map) != 0) {
  83          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  84          return GL_FALSE;
  85       }
  86    }
  87    else {
  88       _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
  89    }
  90
  91    if (0)
  92       _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
  93    if (drmMap(sPriv->fd,
  94               intelScreen->back.handle,
  95               intelScreen->back.size,
  96               (drmAddress *) & intelScreen->back.map) != 0) {
  97       intelUnmapScreenRegions(intelScreen);
  98       return GL_FALSE;
  99    }
 100
 101    if (intelScreen->third.handle) {
 102       if (0)
 103          _mesa_printf("Third 0x%08x ", intelScreen->third.handle);
 104       if (drmMap(sPriv->fd,
 105                  intelScreen->third.handle,
 106                  intelScreen->third.size,
 107                  (drmAddress *) & intelScreen->third.map) != 0) {
 108          intelUnmapScreenRegions(intelScreen);
 109          return GL_FALSE;
 110       }
 111    }
 112
 113    if (0)
 114       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 115    if (drmMap(sPriv->fd,
 116               intelScreen->depth.handle,
 117               intelScreen->depth.size,
 118               (drmAddress *) & intelScreen->depth.map) != 0) {
 119       intelUnmapScreenRegions(intelScreen);
 120       return GL_FALSE;
 121    }
 122
 123    if (0)
 124       _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 125    if (intelScreen->tex.size != 0) {
 126       intelScreen->ttm = GL_FALSE;
 127
 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    } else {
 136       intelScreen->ttm = GL_TRUE;
 137    }
 138
 139    if (0)
 140       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 141              intelScreen->front.map,
 142              intelScreen->back.map, intelScreen->third.map,
 143              intelScreen->depth.map, intelScreen->tex.map);
 144    return GL_TRUE;
 145 }
 146
 147 /** Driver-specific fence emit implementation for the fake memory manager. */
 148 static unsigned int
 149 intel_fence_emit(void *private)
 150 {
 151    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 152    unsigned int fence;
 153
 154    /* XXX: Need to emit a flush, if we haven't already (at least with the
 155     * current batchbuffer implementation, we have).
 156     */
 157
 158    fence = intelEmitIrqLocked(intelScreen);
 159
 160    return fence;
 161 }
 162
 163 /** Driver-specific fence wait implementation for the fake memory manager. */
 164 static int
 165 intel_fence_wait(void *private, unsigned int cookie)
 166 {
 167    intelScreenPrivate *intelScreen = (intelScreenPrivate *)private;
 168
 169    intelWaitIrq(intelScreen, cookie);
 170
 171    return 0;
 172 }
 173
 174 static struct intel_region *
 175 intel_recreate_static(intelScreenPrivate *intelScreen,
 176                       struct intel_region *region,
 177                       GLuint mem_type,
 178                       GLuint offset,
 179                       void *virtual,
 180                       GLuint cpp, GLuint pitch, GLuint height)
 181 {
 182   if (region) {
 183     intel_region_update_static(intelScreen, region, mem_type, offset,
 184                                virtual, cpp, pitch, height);
 185   } else {
 186     region = intel_region_create_static(intelScreen, mem_type, offset,
 187                                         virtual, cpp, pitch, height);
 188   }
 189   return region;
 190 }
 191
 192
 193 /* Create intel_region structs to describe the static front,back,depth
 194  * buffers created by the xserver.
 195  *
 196  * Although FBO's mean we now no longer use these as render targets in
 197  * all circumstances, they won't go away until the back and depth
 198  * buffers become private, and the front and rotated buffers will
 199  * remain even then.
 200  *
 201  * Note that these don't allocate video memory, just describe
 202  * allocations alread made by the X server.
 203  */
 204 static void
 205 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 206 {
 207    intelScreen->front_region =
 208       intel_recreate_static(intelScreen,
 209                             intelScreen->front_region,
 210                             DRM_BO_FLAG_MEM_TT,
 211                             intelScreen->front.offset,
 212                             intelScreen->front.map,
 213                             intelScreen->cpp,
 214                             intelScreen->front.pitch / intelScreen->cpp,
 215                             intelScreen->height);
 216
 217    intelScreen->rotated_region =
 218       intel_recreate_static(intelScreen,
 219                             intelScreen->rotated_region,
 220                             DRM_BO_FLAG_MEM_TT,
 221                             intelScreen->rotated.offset,
 222                             intelScreen->rotated.map,
 223                             intelScreen->cpp,
 224                             intelScreen->rotated.pitch /
 225                             intelScreen->cpp, intelScreen->height);
 226
 227
 228    intelScreen->back_region =
 229       intel_recreate_static(intelScreen,
 230                             intelScreen->back_region,
 231                             DRM_BO_FLAG_MEM_TT,
 232                             intelScreen->back.offset,
 233                             intelScreen->back.map,
 234                             intelScreen->cpp,
 235                             intelScreen->back.pitch / intelScreen->cpp,
 236                             intelScreen->height);
 237
 238    if (intelScreen->third.handle) {
 239       intelScreen->third_region =
 240          intel_recreate_static(intelScreen,
 241                                intelScreen->third_region,
 242                                DRM_BO_FLAG_MEM_TT,
 243                                intelScreen->third.offset,
 244                                intelScreen->third.map,
 245                                intelScreen->cpp,
 246                                intelScreen->third.pitch / intelScreen->cpp,
 247                                intelScreen->height);
 248    }
 249
 250    /* Still assuming front.cpp == depth.cpp
 251     */
 252    intelScreen->depth_region =
 253       intel_recreate_static(intelScreen,
 254                             intelScreen->depth_region,
 255                             DRM_BO_FLAG_MEM_TT,
 256                             intelScreen->depth.offset,
 257                             intelScreen->depth.map,
 258                             intelScreen->cpp,
 259                             intelScreen->depth.pitch / intelScreen->cpp,
 260                             intelScreen->height);
 261 }
 262
 263 /**
 264  * Use the information in the sarea to update the screen parameters
 265  * related to screen rotation. Needs to be called locked.
 266  */
 267 void
 268 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 269 {
 270    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 271
 272    intelUnmapScreenRegions(intelScreen);
 273    intelUpdateScreenFromSAREA(intelScreen, sarea);
 274    if (!intelMapScreenRegions(sPriv)) {
 275       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 276    }
 277    intel_recreate_static_regions(intelScreen);
 278 }
 279
 280
 281 void
 282 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 283 {
 284 #define REALLY_UNMAP 1
 285    if (intelScreen->front.map) {
 286 #if REALLY_UNMAP
 287       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 288          printf("drmUnmap front failed!\n");
 289 #endif
 290       intelScreen->front.map = NULL;
 291    }
 292    if (intelScreen->back.map) {
 293 #if REALLY_UNMAP
 294       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 295          printf("drmUnmap back failed!\n");
 296 #endif
 297       intelScreen->back.map = NULL;
 298    }
 299    if (intelScreen->third.map) {
 300 #if REALLY_UNMAP
 301       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 302          printf("drmUnmap third failed!\n");
 303 #endif
 304       intelScreen->third.map = NULL;
 305    }
 306    if (intelScreen->depth.map) {
 307 #if REALLY_UNMAP
 308       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 309       intelScreen->depth.map = NULL;
 310 #endif
 311    }
 312    if (intelScreen->tex.map) {
 313 #if REALLY_UNMAP
 314       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 315       intelScreen->tex.map = NULL;
 316 #endif
 317    }
 318 }
 319
 320
 321 static void
 322 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 323                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 324 {
 325    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 326            intelScreen->front.size, intelScreen->front.offset,
 327            intelScreen->front.pitch);
 328    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 329            intelScreen->back.size, intelScreen->back.offset,
 330            intelScreen->back.pitch);
 331    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 332            intelScreen->depth.size, intelScreen->depth.offset,
 333            intelScreen->depth.pitch);
 334    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 335            intelScreen->rotated.size, intelScreen->rotated.offset,
 336            intelScreen->rotated.pitch);
 337    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 338            intelScreen->tex.size, intelScreen->tex.offset);
 339    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 340 }
 341
 342
 343 static void
 344 intelPrintSAREA(const drmI830Sarea * sarea)
 345 {
 346    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 347            sarea->height);
 348    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 349    fprintf(stderr,
 350            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 351            sarea->front_offset, sarea->front_size,
 352            (unsigned) sarea->front_handle);
 353    fprintf(stderr,
 354            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 355            sarea->back_offset, sarea->back_size,
 356            (unsigned) sarea->back_handle);
 357    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 358            sarea->depth_offset, sarea->depth_size,
 359            (unsigned) sarea->depth_handle);
 360    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 361            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 362    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 363    fprintf(stderr,
 364            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 365            sarea->rotated_offset, sarea->rotated_size);
 366    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 367 }
 368
 369
 370 /**
 371  * A number of the screen parameters are obtained/computed from
 372  * information in the SAREA.  This function updates those parameters.
 373  */
 374 void
 375 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 376                            drmI830Sarea * sarea)
 377 {
 378    intelScreen->width = sarea->width;
 379    intelScreen->height = sarea->height;
 380
 381    intelScreen->front.offset = sarea->front_offset;
 382    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 383    intelScreen->front.handle = sarea->front_handle;
 384    intelScreen->front.size = sarea->front_size;
 385
 386    intelScreen->back.offset = sarea->back_offset;
 387    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 388    intelScreen->back.handle = sarea->back_handle;
 389    intelScreen->back.size = sarea->back_size;
 390
 391    if (intelScreen->driScrnPriv->ddxMinor >= 8) {
 392       intelScreen->third.offset = sarea->third_offset;
 393       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 394       intelScreen->third.handle = sarea->third_handle;
 395       intelScreen->third.size = sarea->third_size;
 396    }
 397
 398    intelScreen->depth.offset = sarea->depth_offset;
 399    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 400    intelScreen->depth.handle = sarea->depth_handle;
 401    intelScreen->depth.size = sarea->depth_size;
 402
 403    intelScreen->tex.offset = sarea->tex_offset;
 404    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 405    intelScreen->tex.handle = sarea->tex_handle;
 406    intelScreen->tex.size = sarea->tex_size;
 407
 408    intelScreen->rotated.offset = sarea->rotated_offset;
 409    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 410    intelScreen->rotated.size = sarea->rotated_size;
 411    intelScreen->current_rotation = sarea->rotation;
 412    matrix23Rotate(&intelScreen->rotMatrix,
 413                   sarea->width, sarea->height, sarea->rotation);
 414    intelScreen->rotatedWidth = sarea->virtualX;
 415    intelScreen->rotatedHeight = sarea->virtualY;
 416
 417    if (0)
 418       intelPrintSAREA(sarea);
 419 }
 420
 421
 422 static GLboolean
 423 intelInitDriver(__DRIscreenPrivate * sPriv)
 424 {
 425    intelScreenPrivate *intelScreen;
 426    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 427    drmI830Sarea *sarea;
 428
 429    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 430       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
 431                                       getProcAddress("glxEnableExtension"));
 432    void *const psc = sPriv->psc->screenConfigs;
 433
 434    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 435       fprintf(stderr,
 436               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 437       return GL_FALSE;
 438    }
 439
 440    /* Allocate the private area */
 441    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 442    if (!intelScreen) {
 443       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 444       return GL_FALSE;
 445    }
 446    /* parse information in __driConfigOptions */
 447    driParseOptionInfo(&intelScreen->optionCache,
 448                       __driConfigOptions, __driNConfigOptions);
 449
 450    intelScreen->driScrnPriv = sPriv;
 451    sPriv->private = (void *) intelScreen;
 452    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 453    sarea = (drmI830Sarea *)
 454       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 455
 456    intelScreen->deviceID = gDRIPriv->deviceID;
 457    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 458       intelScreen->maxBatchSize = 4096;
 459    else
 460       intelScreen->maxBatchSize = BATCH_SZ;
 461
 462    intelScreen->mem = gDRIPriv->mem;
 463    intelScreen->cpp = gDRIPriv->cpp;
 464
 465    switch (gDRIPriv->bitsPerPixel) {
 466    case 16:
 467       intelScreen->fbFormat = DV_PF_565;
 468       break;
 469    case 32:
 470       intelScreen->fbFormat = DV_PF_8888;
 471       break;
 472    default:
 473       exit(1);
 474       break;
 475    }
 476
 477    intelUpdateScreenFromSAREA(intelScreen, sarea);
 478
 479    if (!intelMapScreenRegions(sPriv)) {
 480       fprintf(stderr, "\nERROR!  mapping regions\n");
 481       _mesa_free(intelScreen);
 482       sPriv->private = NULL;
 483       return GL_FALSE;
 484    }
 485
 486    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 487
 488    if (0)
 489       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 490
 491    intelScreen->drmMinor = sPriv->drmMinor;
 492
 493    /* Determine if IRQs are active? */
 494    {
 495       int ret;
 496       drmI830GetParam gp;
 497
 498       gp.param = I830_PARAM_IRQ_ACTIVE;
 499       gp.value = &intelScreen->irq_active;
 500
 501       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 502                                 &gp, sizeof(gp));
 503       if (ret) {
 504          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 505          return GL_FALSE;
 506       }
 507    }
 508
 509    /* Determine if batchbuffers are allowed */
 510    {
 511       int ret;
 512       drmI830GetParam gp;
 513
 514       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 515       gp.value = &intelScreen->allow_batchbuffer;
 516
 517       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 518                                 &gp, sizeof(gp));
 519       if (ret) {
 520          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 521          return GL_FALSE;
 522       }
 523    }
 524
 525    if (glx_enable_extension != NULL) {
 526       (*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 527       (*glx_enable_extension) (psc, "GLX_SGI_video_sync");
 528       (*glx_enable_extension) (psc, "GLX_MESA_swap_control");
 529       (*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
 530       (*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
 531    }
 532
 533    if (intelScreen->ttm) {
 534       intelScreen->bufmgr = dri_bufmgr_ttm_init(sPriv->fd,
 535                                                 DRM_FENCE_TYPE_EXE,
 536                                                 DRM_FENCE_TYPE_EXE |
 537                                                 DRM_I915_FENCE_TYPE_RW);
 538    } else {
 539       intelScreen->bufmgr = dri_bufmgr_fake_init(intelScreen->tex.offset,
 540                                                  intelScreen->tex.map,
 541                                                  intelScreen->tex.size,
 542                                                  intel_fence_emit,
 543                                                  intel_fence_wait,
 544                                                  intelScreen);
 545    }
 546
 547    intel_recreate_static_regions(intelScreen);
 548
 549    return GL_TRUE;
 550 }
 551
 552
 553 static void
 554 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 555 {
 556    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 557
 558    intelUnmapScreenRegions(intelScreen);
 559
 560    /* XXX: bufmgr teardown */
 561    FREE(intelScreen);
 562    sPriv->private = NULL;
 563 }
 564
 565
 566 /**
 567  * This is called when we need to set up GL rendering to a new X window.
 568  */
 569 static GLboolean
 570 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 571                   __DRIdrawablePrivate * driDrawPriv,
 572                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 573 {
 574    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 575
 576    if (isPixmap) {
 577       return GL_FALSE;          /* not implemented */
 578    }
 579    else {
 580       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 581                              mesaVis->depthBits != 24);
 582       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 583
 584       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 585
 586       if (!intel_fb)
 587          return GL_FALSE;
 588
 589       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 590
 591       /* setup the hardware-based renderbuffers */
 592       {
 593          intel_fb->color_rb[0]
 594             = intel_create_renderbuffer(rgbFormat,
 595                                         screen->width, screen->height,
 596                                         screen->front.offset,
 597                                         screen->front.pitch,
 598                                         screen->cpp,
 599                                         screen->front.map);
 600          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 601          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 602                                 &intel_fb->color_rb[0]->Base);
 603       }
 604
 605       if (mesaVis->doubleBufferMode) {
 606          intel_fb->color_rb[1]
 607             = intel_create_renderbuffer(rgbFormat,
 608                                         screen->width, screen->height,
 609                                         screen->back.offset,
 610                                         screen->back.pitch,
 611                                         screen->cpp,
 612                                         screen->back.map);
 613          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 614          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 615                                 &intel_fb->color_rb[1]->Base);
 616
 617          if (screen->third.handle) {
 618             struct gl_renderbuffer *tmp_rb = NULL;
 619
 620             intel_fb->color_rb[2]
 621                = intel_create_renderbuffer(rgbFormat,
 622                                            screen->width, screen->height,
 623                                            screen->third.offset,
 624                                            screen->third.pitch,
 625                                            screen->cpp,
 626                                            screen->third.map);
 627             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 628             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 629          }
 630       }
 631
 632       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 633          /* combined depth/stencil buffer */
 634          struct intel_renderbuffer *depthStencilRb
 635             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 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(&depthStencilRb->Base);
 642          /* note: bind RB to two attachment points */
 643          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 644                                 &depthStencilRb->Base);
 645          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 646                                 &depthStencilRb->Base);
 647       }
 648       else if (mesaVis->depthBits == 16) {
 649          /* just 16-bit depth buffer, no hw stencil */
 650          struct intel_renderbuffer *depthRb
 651             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 652                                         screen->width, screen->height,
 653                                         screen->depth.offset,
 654                                         screen->depth.pitch,
 655                                         screen->cpp,    /* 2! */
 656                                         screen->depth.map);
 657          intel_set_span_functions(&depthRb->Base);
 658          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 659       }
 660
 661       /* now add any/all software-based renderbuffers we may need */
 662       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 663                                    GL_FALSE, /* never sw color */
 664                                    GL_FALSE, /* never sw depth */
 665                                    swStencil, mesaVis->accumRedBits > 0,
 666                                    GL_FALSE, /* never sw alpha */
 667                                    GL_FALSE  /* never sw aux */ );
 668       driDrawPriv->driverPrivate = (void *) intel_fb;
 669
 670       return GL_TRUE;
 671    }
 672 }
 673
 674 static void
 675 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 676 {
 677    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 678 }
 679
 680
 681 /**
 682  * Get information about previous buffer swaps.
 683  */
 684 static int
 685 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 686 {
 687    struct intel_framebuffer *intel_fb;
 688
 689    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 690        || (sInfo == NULL)) {
 691       return -1;
 692    }
 693
 694    intel_fb = dPriv->driverPrivate;
 695    sInfo->swap_count = intel_fb->swap_count;
 696    sInfo->swap_ust = intel_fb->swap_ust;
 697    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 698
 699    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 700       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 701       : 0.0;
 702
 703    return 0;
 704 }
 705
 706
 707 /* There are probably better ways to do this, such as an
 708  * init-designated function to register chipids and createcontext
 709  * functions.
 710  */
 711 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 712                                    __DRIcontextPrivate * driContextPriv,
 713                                    void *sharedContextPrivate);
 714
 715 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 716                                    __DRIcontextPrivate * driContextPriv,
 717                                    void *sharedContextPrivate);
 718
 719
 720
 721
 722 static GLboolean
 723 intelCreateContext(const __GLcontextModes * mesaVis,
 724                    __DRIcontextPrivate * driContextPriv,
 725                    void *sharedContextPrivate)
 726 {
 727    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 728    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 729
 730    switch (intelScreen->deviceID) {
 731       /* Don't deal with i830 until texture work complete:
 732        */
 733    case PCI_CHIP_845_G:
 734    case PCI_CHIP_I830_M:
 735    case PCI_CHIP_I855_GM:
 736    case PCI_CHIP_I865_G:
 737       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 738
 739    case PCI_CHIP_I915_G:
 740    case PCI_CHIP_I915_GM:
 741    case PCI_CHIP_I945_G:
 742    case PCI_CHIP_I945_GM:
 743       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 744
 745    default:
 746       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 747       return GL_FALSE;
 748    }
 749 }
 750
 751
 752 static const struct __DriverAPIRec intelAPI = {
 753    .InitDriver = intelInitDriver,
 754    .DestroyScreen = intelDestroyScreen,
 755    .CreateContext = intelCreateContext,
 756    .DestroyContext = intelDestroyContext,
 757    .CreateBuffer = intelCreateBuffer,
 758    .DestroyBuffer = intelDestroyBuffer,
 759    .SwapBuffers = intelSwapBuffers,
 760    .MakeCurrent = intelMakeCurrent,
 761    .UnbindContext = intelUnbindContext,
 762    .GetSwapInfo = intelGetSwapInfo,
 763    .GetMSC = driGetMSC32,
 764    .WaitForMSC = driWaitForMSC32,
 765    .WaitForSBC = NULL,
 766    .SwapBuffersMSC = NULL,
 767    .CopySubBuffer = intelCopySubBuffer
 768 };
 769
 770
 771 static __GLcontextModes *
 772 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 773                  unsigned stencil_bits, GLboolean have_back_buffer)
 774 {
 775    __GLcontextModes *modes;
 776    __GLcontextModes *m;
 777    unsigned num_modes;
 778    unsigned depth_buffer_factor;
 779    unsigned back_buffer_factor;
 780    GLenum fb_format;
 781    GLenum fb_type;
 782
 783    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 784     * support pageflipping at all.
 785     */
 786    static const GLenum back_buffer_modes[] = {
 787       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 788    };
 789
 790    u_int8_t depth_bits_array[3];
 791    u_int8_t stencil_bits_array[3];
 792
 793
 794    depth_bits_array[0] = 0;
 795    depth_bits_array[1] = depth_bits;
 796    depth_bits_array[2] = depth_bits;
 797
 798    /* Just like with the accumulation buffer, always provide some modes
 799     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 800     * care about that.
 801     */
 802    stencil_bits_array[0] = 0;
 803    stencil_bits_array[1] = 0;
 804    if (depth_bits == 24)
 805       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 806
 807    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 808
 809    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 810    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 811
 812    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 813
 814    if (pixel_bits == 16) {
 815       fb_format = GL_RGB;
 816       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 817    }
 818    else {
 819       fb_format = GL_BGRA;
 820       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 821    }
 822
 823    modes =
 824       (*dri_interface->createContextModes) (num_modes,
 825                                             sizeof(__GLcontextModes));
 826    m = modes;
 827    if (!driFillInModes(&m, fb_format, fb_type,
 828                        depth_bits_array, stencil_bits_array,
 829                        depth_buffer_factor, back_buffer_modes,
 830                        back_buffer_factor, GLX_TRUE_COLOR)) {
 831       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 832               __LINE__);
 833       return NULL;
 834    }
 835    if (!driFillInModes(&m, fb_format, fb_type,
 836                        depth_bits_array, stencil_bits_array,
 837                        depth_buffer_factor, back_buffer_modes,
 838                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 839       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 840               __LINE__);
 841       return NULL;
 842    }
 843
 844    /* Mark the visual as slow if there are "fake" stencil bits.
 845     */
 846    for (m = modes; m != NULL; m = m->next) {
 847       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 848          m->visualRating = GLX_SLOW_CONFIG;
 849       }
 850    }
 851
 852    return modes;
 853 }
 854
 855
 856 /**
 857  * This is the bootstrap function for the driver.  libGL supplies all of the
 858  * requisite information about the system, and the driver initializes itself.
 859  * This routine also fills in the linked list pointed to by \c driver_modes
 860  * with the \c __GLcontextModes that the driver can support for windows or
 861  * pbuffers.
 862  *
 863  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 864  *         failure.
 865  */
 866 PUBLIC void *
 867 __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
 868                               __DRIscreen * psc,
 869                               const __GLcontextModes * modes,
 870                               const __DRIversion * ddx_version,
 871                               const __DRIversion * dri_version,
 872                               const __DRIversion * drm_version,
 873                               const __DRIframebuffer * frame_buffer,
 874                               drmAddress pSAREA, int fd,
 875                               int internal_api_version,
 876                               const __DRIinterfaceMethods * interface,
 877                               __GLcontextModes ** driver_modes)
 878 {
 879    __DRIscreenPrivate *psp;
 880    static const __DRIversion ddx_expected = { 1, 5, 0 };
 881    static const __DRIversion dri_expected = { 4, 0, 0 };
 882    static const __DRIversion drm_expected = { 1, 5, 0 };
 883
 884    dri_interface = interface;
 885
 886    if (!driCheckDriDdxDrmVersions2("i915",
 887                                    dri_version, &dri_expected,
 888                                    ddx_version, &ddx_expected,
 889                                    drm_version, &drm_expected)) {
 890       return NULL;
 891    }
 892
 893    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 894                                   ddx_version, dri_version, drm_version,
 895                                   frame_buffer, pSAREA, fd,
 896                                   internal_api_version, &intelAPI);
 897
 898    if (psp != NULL) {
 899       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 900       *driver_modes = intelFillInModes(dri_priv->cpp * 8,
 901                                        (dri_priv->cpp == 2) ? 16 : 24,
 902                                        (dri_priv->cpp == 2) ? 0 : 8, 1);
 903
 904       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 905        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 906        * the extensions that *might* be enables are known.  This is needed because the
 907        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 908        * enable the extensions until we have a context pointer.
 909        *
 910        * Hello chicken.  Hello egg.  How are you two today?
 911        */
 912       driInitExtensions(NULL, card_extensions, GL_FALSE);
 913    }
 914
 915    return (void *) psp;
 916 }
 917
 918 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 919 {
 920   /*
 921    * This should probably change to have the screen allocate a dummy
 922    * context at screen creation. For now just use the current context.
 923    */
 924
 925   GET_CURRENT_CONTEXT(ctx);
 926   if (ctx == NULL) {
 927      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 928      return NULL;
 929   }
 930   return intel_context(ctx);
 931 }
 932