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_bufpool.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 (drmMap(sPriv->fd,
 126               intelScreen->tex.handle,
 127               intelScreen->tex.size,
 128               (drmAddress *) & intelScreen->tex.map) != 0) {
 129       intelUnmapScreenRegions(intelScreen);
 130       return GL_FALSE;
 131    }
 132 #endif
 133    if (0)
 134       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 135              intelScreen->front.map,
 136              intelScreen->back.map, intelScreen->third.map,
 137              intelScreen->depth.map, intelScreen->tex.map);
 138    return GL_TRUE;
 139 }
 140
 141
 142 static struct intel_region *
 143 intel_recreate_static(intelScreenPrivate *intelScreen,
 144                       struct intel_region *region,
 145                       GLuint mem_type,
 146                       GLuint offset,
 147                       void *virtual,
 148                       GLuint cpp, GLuint pitch, GLuint height)
 149 {
 150   if (region) {
 151     intel_region_update_static(intelScreen, region, mem_type, offset,
 152                                virtual, cpp, pitch, height);
 153   } else {
 154     region = intel_region_create_static(intelScreen, mem_type, offset,
 155                                         virtual, cpp, pitch, height);
 156   }
 157   return region;
 158 }
 159
 160
 161 /* Create intel_region structs to describe the static front,back,depth
 162  * buffers created by the xserver.
 163  *
 164  * Although FBO's mean we now no longer use these as render targets in
 165  * all circumstances, they won't go away until the back and depth
 166  * buffers become private, and the front and rotated buffers will
 167  * remain even then.
 168  *
 169  * Note that these don't allocate video memory, just describe
 170  * allocations alread made by the X server.
 171  */
 172 static void
 173 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 174 {
 175    intelScreen->front_region =
 176       intel_recreate_static(intelScreen,
 177                             intelScreen->front_region,
 178                             DRM_BO_FLAG_MEM_TT,
 179                             intelScreen->front.offset,
 180                             intelScreen->front.map,
 181                             intelScreen->cpp,
 182                             intelScreen->front.pitch / intelScreen->cpp,
 183                             intelScreen->height);
 184
 185    intelScreen->rotated_region =
 186       intel_recreate_static(intelScreen,
 187                             intelScreen->rotated_region,
 188                             DRM_BO_FLAG_MEM_TT,
 189                             intelScreen->rotated.offset,
 190                             intelScreen->rotated.map,
 191                             intelScreen->cpp,
 192                             intelScreen->rotated.pitch /
 193                             intelScreen->cpp, intelScreen->height);
 194
 195
 196    intelScreen->back_region =
 197       intel_recreate_static(intelScreen,
 198                             intelScreen->back_region,
 199                             DRM_BO_FLAG_MEM_TT,
 200                             intelScreen->back.offset,
 201                             intelScreen->back.map,
 202                             intelScreen->cpp,
 203                             intelScreen->back.pitch / intelScreen->cpp,
 204                             intelScreen->height);
 205
 206    if (intelScreen->third.handle) {
 207       intelScreen->third_region =
 208          intel_recreate_static(intelScreen,
 209                                intelScreen->third_region,
 210                                DRM_BO_FLAG_MEM_TT,
 211                                intelScreen->third.offset,
 212                                intelScreen->third.map,
 213                                intelScreen->cpp,
 214                                intelScreen->third.pitch / intelScreen->cpp,
 215                                intelScreen->height);
 216    }
 217
 218    /* Still assuming front.cpp == depth.cpp
 219     */
 220    intelScreen->depth_region =
 221       intel_recreate_static(intelScreen,
 222                             intelScreen->depth_region,
 223                             DRM_BO_FLAG_MEM_TT,
 224                             intelScreen->depth.offset,
 225                             intelScreen->depth.map,
 226                             intelScreen->cpp,
 227                             intelScreen->depth.pitch / intelScreen->cpp,
 228                             intelScreen->height);
 229 }
 230
 231 /**
 232  * Use the information in the sarea to update the screen parameters
 233  * related to screen rotation. Needs to be called locked.
 234  */
 235 void
 236 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 237 {
 238    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 239
 240    intelUnmapScreenRegions(intelScreen);
 241    intelUpdateScreenFromSAREA(intelScreen, sarea);
 242    if (!intelMapScreenRegions(sPriv)) {
 243       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 244    }
 245    intel_recreate_static_regions(intelScreen);
 246 }
 247
 248
 249 void
 250 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 251 {
 252 #define REALLY_UNMAP 1
 253    if (intelScreen->front.map) {
 254 #if REALLY_UNMAP
 255       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 256          printf("drmUnmap front failed!\n");
 257 #endif
 258       intelScreen->front.map = NULL;
 259    }
 260    if (intelScreen->back.map) {
 261 #if REALLY_UNMAP
 262       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 263          printf("drmUnmap back failed!\n");
 264 #endif
 265       intelScreen->back.map = NULL;
 266    }
 267    if (intelScreen->third.map) {
 268 #if REALLY_UNMAP
 269       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 270          printf("drmUnmap third failed!\n");
 271 #endif
 272       intelScreen->third.map = NULL;
 273    }
 274    if (intelScreen->depth.map) {
 275 #if REALLY_UNMAP
 276       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 277       intelScreen->depth.map = NULL;
 278 #endif
 279    }
 280    if (intelScreen->tex.map) {
 281 #if REALLY_UNMAP
 282       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 283       intelScreen->tex.map = NULL;
 284 #endif
 285    }
 286 }
 287
 288
 289 static void
 290 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 291                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 292 {
 293    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 294            intelScreen->front.size, intelScreen->front.offset,
 295            intelScreen->front.pitch);
 296    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 297            intelScreen->back.size, intelScreen->back.offset,
 298            intelScreen->back.pitch);
 299    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 300            intelScreen->depth.size, intelScreen->depth.offset,
 301            intelScreen->depth.pitch);
 302    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 303            intelScreen->rotated.size, intelScreen->rotated.offset,
 304            intelScreen->rotated.pitch);
 305    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 306            intelScreen->tex.size, intelScreen->tex.offset);
 307    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 308 }
 309
 310
 311 static void
 312 intelPrintSAREA(const drmI830Sarea * sarea)
 313 {
 314    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 315            sarea->height);
 316    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 317    fprintf(stderr,
 318            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 319            sarea->front_offset, sarea->front_size,
 320            (unsigned) sarea->front_handle);
 321    fprintf(stderr,
 322            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 323            sarea->back_offset, sarea->back_size,
 324            (unsigned) sarea->back_handle);
 325    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 326            sarea->depth_offset, sarea->depth_size,
 327            (unsigned) sarea->depth_handle);
 328    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 329            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 330    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 331    fprintf(stderr,
 332            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 333            sarea->rotated_offset, sarea->rotated_size);
 334    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 335 }
 336
 337
 338 /**
 339  * A number of the screen parameters are obtained/computed from
 340  * information in the SAREA.  This function updates those parameters.
 341  */
 342 void
 343 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 344                            drmI830Sarea * sarea)
 345 {
 346    intelScreen->width = sarea->width;
 347    intelScreen->height = sarea->height;
 348
 349    intelScreen->front.offset = sarea->front_offset;
 350    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 351    intelScreen->front.handle = sarea->front_handle;
 352    intelScreen->front.size = sarea->front_size;
 353
 354    intelScreen->back.offset = sarea->back_offset;
 355    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 356    intelScreen->back.handle = sarea->back_handle;
 357    intelScreen->back.size = sarea->back_size;
 358
 359    if (intelScreen->driScrnPriv->ddxMinor >= 8) {
 360       intelScreen->third.offset = sarea->third_offset;
 361       intelScreen->third.pitch = sarea->pitch * intelScreen->cpp;
 362       intelScreen->third.handle = sarea->third_handle;
 363       intelScreen->third.size = sarea->third_size;
 364    }
 365
 366    intelScreen->depth.offset = sarea->depth_offset;
 367    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 368    intelScreen->depth.handle = sarea->depth_handle;
 369    intelScreen->depth.size = sarea->depth_size;
 370
 371    intelScreen->tex.offset = sarea->tex_offset;
 372    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 373    intelScreen->tex.handle = sarea->tex_handle;
 374    intelScreen->tex.size = sarea->tex_size;
 375
 376    intelScreen->rotated.offset = sarea->rotated_offset;
 377    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 378    intelScreen->rotated.size = sarea->rotated_size;
 379    intelScreen->current_rotation = sarea->rotation;
 380    matrix23Rotate(&intelScreen->rotMatrix,
 381                   sarea->width, sarea->height, sarea->rotation);
 382    intelScreen->rotatedWidth = sarea->virtualX;
 383    intelScreen->rotatedHeight = sarea->virtualY;
 384
 385    if (0)
 386       intelPrintSAREA(sarea);
 387 }
 388
 389
 390 static GLboolean
 391 intelInitDriver(__DRIscreenPrivate * sPriv)
 392 {
 393    intelScreenPrivate *intelScreen;
 394    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 395    drmI830Sarea *sarea;
 396    unsigned batchPoolSize = 1024*1024;
 397
 398    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 399       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
 400                                       getProcAddress("glxEnableExtension"));
 401    void *const psc = sPriv->psc->screenConfigs;
 402
 403    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 404       fprintf(stderr,
 405               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 406       return GL_FALSE;
 407    }
 408
 409    /* Allocate the private area */
 410    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 411    if (!intelScreen) {
 412       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 413       return GL_FALSE;
 414    }
 415    /* parse information in __driConfigOptions */
 416    driParseOptionInfo(&intelScreen->optionCache,
 417                       __driConfigOptions, __driNConfigOptions);
 418
 419    intelScreen->driScrnPriv = sPriv;
 420    sPriv->private = (void *) intelScreen;
 421    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 422    sarea = (drmI830Sarea *)
 423       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 424
 425    intelScreen->maxBatchSize = BATCH_SZ;
 426    intelScreen->deviceID = gDRIPriv->deviceID;
 427    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 428       intelScreen->maxBatchSize = 4096;
 429    batchPoolSize /= intelScreen->maxBatchSize;
 430
 431    intelScreen->mem = gDRIPriv->mem;
 432    intelScreen->cpp = gDRIPriv->cpp;
 433
 434    switch (gDRIPriv->bitsPerPixel) {
 435    case 16:
 436       intelScreen->fbFormat = DV_PF_565;
 437       break;
 438    case 32:
 439       intelScreen->fbFormat = DV_PF_8888;
 440       break;
 441    default:
 442       exit(1);
 443       break;
 444    }
 445
 446    intelUpdateScreenFromSAREA(intelScreen, sarea);
 447
 448    if (!intelMapScreenRegions(sPriv)) {
 449       fprintf(stderr, "\nERROR!  mapping regions\n");
 450       _mesa_free(intelScreen);
 451       sPriv->private = NULL;
 452       return GL_FALSE;
 453    }
 454
 455 #if 0
 456
 457    /*
 458     * FIXME: Remove this code and its references.
 459     */
 460
 461    intelScreen->tex.offset = gDRIPriv->textureOffset;
 462    intelScreen->logTextureGranularity = gDRIPriv->logTextureGranularity;
 463    intelScreen->tex.handle = gDRIPriv->textures;
 464    intelScreen->tex.size = gDRIPriv->textureSize;
 465
 466 #else
 467    intelScreen->tex.offset = 0;
 468    intelScreen->logTextureGranularity = 0;
 469    intelScreen->tex.handle = 0;
 470    intelScreen->tex.size = 0;
 471 #endif
 472
 473    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 474
 475    if (0)
 476       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 477
 478    intelScreen->drmMinor = sPriv->drmMinor;
 479
 480    /* Determine if IRQs are active? */
 481    {
 482       int ret;
 483       drmI830GetParam gp;
 484
 485       gp.param = I830_PARAM_IRQ_ACTIVE;
 486       gp.value = &intelScreen->irq_active;
 487
 488       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 489                                 &gp, sizeof(gp));
 490       if (ret) {
 491          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 492          return GL_FALSE;
 493       }
 494    }
 495
 496    /* Determine if batchbuffers are allowed */
 497    {
 498       int ret;
 499       drmI830GetParam gp;
 500
 501       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 502       gp.value = &intelScreen->allow_batchbuffer;
 503
 504       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 505                                 &gp, sizeof(gp));
 506       if (ret) {
 507          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 508          return GL_FALSE;
 509       }
 510    }
 511
 512    if (glx_enable_extension != NULL) {
 513       (*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 514       (*glx_enable_extension) (psc, "GLX_SGI_video_sync");
 515       (*glx_enable_extension) (psc, "GLX_MESA_swap_control");
 516       (*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
 517       (*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
 518    }
 519
 520    intelScreen->regionPool = driDRMPoolInit(sPriv->fd);
 521
 522    if (!intelScreen->regionPool)
 523       return GL_FALSE;
 524
 525    intelScreen->staticPool = driDRMStaticPoolInit(sPriv->fd);
 526
 527    if (!intelScreen->staticPool)
 528       return GL_FALSE;
 529
 530    intelScreen->texPool = intelScreen->regionPool;
 531
 532    intelScreen->batchPool = driBatchPoolInit(sPriv->fd,
 533                                              DRM_BO_FLAG_EXE |
 534                                              DRM_BO_FLAG_MEM_TT |
 535                                              DRM_BO_FLAG_MEM_LOCAL,
 536                                              intelScreen->maxBatchSize,
 537                                              batchPoolSize, 5);
 538    if (!intelScreen->batchPool) {
 539       fprintf(stderr, "Failed to initialize batch pool - possible incorrect agpgart installed\n");
 540       return GL_FALSE;
 541    }
 542
 543    intel_recreate_static_regions(intelScreen);
 544
 545    return GL_TRUE;
 546 }
 547
 548
 549 static void
 550 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 551 {
 552    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 553
 554    intelUnmapScreenRegions(intelScreen);
 555
 556    driPoolTakeDown(intelScreen->regionPool);
 557    driPoolTakeDown(intelScreen->staticPool);
 558    driPoolTakeDown(intelScreen->batchPool);
 559    FREE(intelScreen);
 560    sPriv->private = NULL;
 561 }
 562
 563
 564 /**
 565  * This is called when we need to set up GL rendering to a new X window.
 566  */
 567 static GLboolean
 568 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 569                   __DRIdrawablePrivate * driDrawPriv,
 570                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 571 {
 572    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 573
 574    if (isPixmap) {
 575       return GL_FALSE;          /* not implemented */
 576    }
 577    else {
 578       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 579                              mesaVis->depthBits != 24);
 580       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 581
 582       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 583
 584       if (!intel_fb)
 585          return GL_FALSE;
 586
 587       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 588
 589       /* setup the hardware-based renderbuffers */
 590       {
 591          intel_fb->color_rb[0]
 592             = intel_create_renderbuffer(rgbFormat,
 593                                         screen->width, screen->height,
 594                                         screen->front.offset,
 595                                         screen->front.pitch,
 596                                         screen->cpp,
 597                                         screen->front.map);
 598          intel_set_span_functions(&intel_fb->color_rb[0]->Base);
 599          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 600                                 &intel_fb->color_rb[0]->Base);
 601       }
 602
 603       if (mesaVis->doubleBufferMode) {
 604          intel_fb->color_rb[1]
 605             = intel_create_renderbuffer(rgbFormat,
 606                                         screen->width, screen->height,
 607                                         screen->back.offset,
 608                                         screen->back.pitch,
 609                                         screen->cpp,
 610                                         screen->back.map);
 611          intel_set_span_functions(&intel_fb->color_rb[1]->Base);
 612          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 613                                 &intel_fb->color_rb[1]->Base);
 614
 615          if (screen->third.handle) {
 616             struct gl_renderbuffer *tmp_rb = NULL;
 617
 618             intel_fb->color_rb[2]
 619                = intel_create_renderbuffer(rgbFormat,
 620                                            screen->width, screen->height,
 621                                            screen->third.offset,
 622                                            screen->third.pitch,
 623                                            screen->cpp,
 624                                            screen->third.map);
 625             intel_set_span_functions(&intel_fb->color_rb[2]->Base);
 626             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 627          }
 628       }
 629
 630       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 631          /* combined depth/stencil buffer */
 632          struct intel_renderbuffer *depthStencilRb
 633             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 634                                         screen->width, screen->height,
 635                                         screen->depth.offset,
 636                                         screen->depth.pitch,
 637                                         screen->cpp,    /* 4! */
 638                                         screen->depth.map);
 639          intel_set_span_functions(&depthStencilRb->Base);
 640          /* note: bind RB to two attachment points */
 641          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 642                                 &depthStencilRb->Base);
 643          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 644                                 &depthStencilRb->Base);
 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       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 742
 743    default:
 744       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 745       return GL_FALSE;
 746    }
 747 }
 748
 749
 750 static const struct __DriverAPIRec intelAPI = {
 751    .InitDriver = intelInitDriver,
 752    .DestroyScreen = intelDestroyScreen,
 753    .CreateContext = intelCreateContext,
 754    .DestroyContext = intelDestroyContext,
 755    .CreateBuffer = intelCreateBuffer,
 756    .DestroyBuffer = intelDestroyBuffer,
 757    .SwapBuffers = intelSwapBuffers,
 758    .MakeCurrent = intelMakeCurrent,
 759    .UnbindContext = intelUnbindContext,
 760    .GetSwapInfo = intelGetSwapInfo,
 761    .GetMSC = driGetMSC32,
 762    .WaitForMSC = driWaitForMSC32,
 763    .WaitForSBC = NULL,
 764    .SwapBuffersMSC = NULL,
 765    .CopySubBuffer = intelCopySubBuffer
 766 };
 767
 768
 769 static __GLcontextModes *
 770 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 771                  unsigned stencil_bits, GLboolean have_back_buffer)
 772 {
 773    __GLcontextModes *modes;
 774    __GLcontextModes *m;
 775    unsigned num_modes;
 776    unsigned depth_buffer_factor;
 777    unsigned back_buffer_factor;
 778    GLenum fb_format;
 779    GLenum fb_type;
 780
 781    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 782     * support pageflipping at all.
 783     */
 784    static const GLenum back_buffer_modes[] = {
 785       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 786    };
 787
 788    u_int8_t depth_bits_array[3];
 789    u_int8_t stencil_bits_array[3];
 790
 791
 792    depth_bits_array[0] = 0;
 793    depth_bits_array[1] = depth_bits;
 794    depth_bits_array[2] = depth_bits;
 795
 796    /* Just like with the accumulation buffer, always provide some modes
 797     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 798     * care about that.
 799     */
 800    stencil_bits_array[0] = 0;
 801    stencil_bits_array[1] = 0;
 802    if (depth_bits == 24)
 803       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 804
 805    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 806
 807    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 808    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 809
 810    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 811
 812    if (pixel_bits == 16) {
 813       fb_format = GL_RGB;
 814       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 815    }
 816    else {
 817       fb_format = GL_BGRA;
 818       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 819    }
 820
 821    modes =
 822       (*dri_interface->createContextModes) (num_modes,
 823                                             sizeof(__GLcontextModes));
 824    m = modes;
 825    if (!driFillInModes(&m, fb_format, fb_type,
 826                        depth_bits_array, stencil_bits_array,
 827                        depth_buffer_factor, back_buffer_modes,
 828                        back_buffer_factor, GLX_TRUE_COLOR)) {
 829       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 830               __LINE__);
 831       return NULL;
 832    }
 833    if (!driFillInModes(&m, fb_format, fb_type,
 834                        depth_bits_array, stencil_bits_array,
 835                        depth_buffer_factor, back_buffer_modes,
 836                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 837       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 838               __LINE__);
 839       return NULL;
 840    }
 841
 842    /* Mark the visual as slow if there are "fake" stencil bits.
 843     */
 844    for (m = modes; m != NULL; m = m->next) {
 845       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 846          m->visualRating = GLX_SLOW_CONFIG;
 847       }
 848    }
 849
 850    return modes;
 851 }
 852
 853
 854 /**
 855  * This is the bootstrap function for the driver.  libGL supplies all of the
 856  * requisite information about the system, and the driver initializes itself.
 857  * This routine also fills in the linked list pointed to by \c driver_modes
 858  * with the \c __GLcontextModes that the driver can support for windows or
 859  * pbuffers.
 860  *
 861  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 862  *         failure.
 863  */
 864 PUBLIC void *
 865 __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
 866                               __DRIscreen * psc,
 867                               const __GLcontextModes * modes,
 868                               const __DRIversion * ddx_version,
 869                               const __DRIversion * dri_version,
 870                               const __DRIversion * drm_version,
 871                               const __DRIframebuffer * frame_buffer,
 872                               drmAddress pSAREA, int fd,
 873                               int internal_api_version,
 874                               const __DRIinterfaceMethods * interface,
 875                               __GLcontextModes ** driver_modes)
 876 {
 877    __DRIscreenPrivate *psp;
 878    static const __DRIversion ddx_expected = { 1, 5, 0 };
 879    static const __DRIversion dri_expected = { 4, 0, 0 };
 880    static const __DRIversion drm_expected = { 1, 7, 0 };
 881
 882    dri_interface = interface;
 883
 884    if (!driCheckDriDdxDrmVersions2("i915",
 885                                    dri_version, &dri_expected,
 886                                    ddx_version, &ddx_expected,
 887                                    drm_version, &drm_expected)) {
 888       return NULL;
 889    }
 890
 891    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 892                                   ddx_version, dri_version, drm_version,
 893                                   frame_buffer, pSAREA, fd,
 894                                   internal_api_version, &intelAPI);
 895    if (psp != NULL) {
 896       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 897       *driver_modes = intelFillInModes(dri_priv->cpp * 8,
 898                                        (dri_priv->cpp == 2) ? 16 : 24,
 899                                        (dri_priv->cpp == 2) ? 0 : 8, 1);
 900
 901       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 902        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 903        * the extensions that *might* be enables are known.  This is needed because the
 904        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 905        * enable the extensions until we have a context pointer.
 906        *
 907        * Hello chicken.  Hello egg.  How are you two today?
 908        */
 909       driInitExtensions(NULL, card_extensions, GL_FALSE);
 910    }
 911
 912    return (void *) psp;
 913 }
 914
 915 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 916 {
 917   /*
 918    * This should probably change to have the screen allocate a dummy
 919    * context at screen creation. For now just use the current context.
 920    */
 921
 922   GET_CURRENT_CONTEXT(ctx);
 923   if (ctx == NULL) {
 924      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 925      return NULL;
 926   }
 927   return intel_context(ctx);
 928 }
 929