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 (0)
 102       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 103    if (drmMap(sPriv->fd,
 104               intelScreen->depth.handle,
 105               intelScreen->depth.size,
 106               (drmAddress *) & intelScreen->depth.map) != 0) {
 107       intelUnmapScreenRegions(intelScreen);
 108       return GL_FALSE;
 109    }
 110
 111 #if 0
 112    _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 113    if (drmMap(sPriv->fd,
 114               intelScreen->tex.handle,
 115               intelScreen->tex.size,
 116               (drmAddress *) & intelScreen->tex.map) != 0) {
 117       intelUnmapScreenRegions(intelScreen);
 118       return GL_FALSE;
 119    }
 120 #endif
 121    if (0)
 122       printf("Mappings:  front: %p  back: %p  depth: %p  tex: %p\n",
 123              intelScreen->front.map,
 124              intelScreen->back.map,
 125              intelScreen->depth.map, intelScreen->tex.map);
 126    return GL_TRUE;
 127 }
 128
 129
 130 static struct intel_region *
 131 intel_recreate_static(intelScreenPrivate *intelScreen,
 132                       struct intel_region *region,
 133                       GLuint mem_type,
 134                       GLuint offset,
 135                       void *virtual,
 136                       GLuint cpp, GLuint pitch, GLuint height)
 137 {
 138   if (region) {
 139     intel_region_update_static(intelScreen, region, mem_type, offset,
 140                                virtual, cpp, pitch, height);
 141   } else {
 142     region = intel_region_create_static(intelScreen, mem_type, offset,
 143                                         virtual, cpp, pitch, height);
 144   }
 145   return region;
 146 }
 147
 148
 149 /* Create intel_region structs to describe the static front,back,depth
 150  * buffers created by the xserver.
 151  *
 152  * Although FBO's mean we now no longer use these as render targets in
 153  * all circumstances, they won't go away until the back and depth
 154  * buffers become private, and the front and rotated buffers will
 155  * remain even then.
 156  *
 157  * Note that these don't allocate video memory, just describe
 158  * allocations alread made by the X server.
 159  */
 160 static void
 161 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 162 {
 163    intelScreen->front_region =
 164       intel_recreate_static(intelScreen,
 165                             intelScreen->front_region,
 166                             DRM_BO_FLAG_MEM_TT,
 167                             intelScreen->front.offset,
 168                             intelScreen->front.map,
 169                             intelScreen->cpp,
 170                             intelScreen->front.pitch / intelScreen->cpp,
 171                             intelScreen->height);
 172
 173    intelScreen->rotated_region =
 174       intel_recreate_static(intelScreen,
 175                             intelScreen->rotated_region,
 176                             DRM_BO_FLAG_MEM_TT,
 177                             intelScreen->rotated.offset,
 178                             intelScreen->rotated.map,
 179                             intelScreen->cpp,
 180                             intelScreen->rotated.pitch /
 181                             intelScreen->cpp, intelScreen->height);
 182
 183
 184    intelScreen->back_region =
 185       intel_recreate_static(intelScreen,
 186                             intelScreen->back_region,
 187                             DRM_BO_FLAG_MEM_TT,
 188                             intelScreen->back.offset,
 189                             intelScreen->back.map,
 190                             intelScreen->cpp,
 191                             intelScreen->back.pitch / intelScreen->cpp,
 192                             intelScreen->height);
 193
 194    /* Still assuming front.cpp == depth.cpp
 195     */
 196    intelScreen->depth_region =
 197       intel_recreate_static(intelScreen,
 198                             intelScreen->depth_region,
 199                             DRM_BO_FLAG_MEM_TT,
 200                             intelScreen->depth.offset,
 201                             intelScreen->depth.map,
 202                             intelScreen->cpp,
 203                             intelScreen->depth.pitch / intelScreen->cpp,
 204                             intelScreen->height);
 205 }
 206
 207 /**
 208  * Use the information in the sarea to update the screen parameters
 209  * related to screen rotation. Needs to be called locked.
 210  */
 211 void
 212 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 213 {
 214    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 215
 216    intelUnmapScreenRegions(intelScreen);
 217    intelUpdateScreenFromSAREA(intelScreen, sarea);
 218    if (!intelMapScreenRegions(sPriv)) {
 219       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 220    }
 221    intel_recreate_static_regions(intelScreen);
 222 }
 223
 224
 225 void
 226 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 227 {
 228 #define REALLY_UNMAP 1
 229    if (intelScreen->front.map) {
 230 #if REALLY_UNMAP
 231       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 232          printf("drmUnmap front failed!\n");
 233 #endif
 234       intelScreen->front.map = NULL;
 235    }
 236    if (intelScreen->back.map) {
 237 #if REALLY_UNMAP
 238       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 239          printf("drmUnmap back failed!\n");
 240 #endif
 241       intelScreen->back.map = NULL;
 242    }
 243    if (intelScreen->depth.map) {
 244 #if REALLY_UNMAP
 245       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 246       intelScreen->depth.map = NULL;
 247 #endif
 248    }
 249    if (intelScreen->tex.map) {
 250 #if REALLY_UNMAP
 251       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 252       intelScreen->tex.map = NULL;
 253 #endif
 254    }
 255 }
 256
 257
 258 static void
 259 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 260                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 261 {
 262    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 263            intelScreen->front.size, intelScreen->front.offset,
 264            intelScreen->front.pitch);
 265    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 266            intelScreen->back.size, intelScreen->back.offset,
 267            intelScreen->back.pitch);
 268    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 269            intelScreen->depth.size, intelScreen->depth.offset,
 270            intelScreen->depth.pitch);
 271    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 272            intelScreen->rotated.size, intelScreen->rotated.offset,
 273            intelScreen->rotated.pitch);
 274    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 275            intelScreen->tex.size, intelScreen->tex.offset);
 276    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 277 }
 278
 279
 280 static void
 281 intelPrintSAREA(const drmI830Sarea * sarea)
 282 {
 283    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 284            sarea->height);
 285    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 286    fprintf(stderr,
 287            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 288            sarea->front_offset, sarea->front_size,
 289            (unsigned) sarea->front_handle);
 290    fprintf(stderr,
 291            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 292            sarea->back_offset, sarea->back_size,
 293            (unsigned) sarea->back_handle);
 294    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 295            sarea->depth_offset, sarea->depth_size,
 296            (unsigned) sarea->depth_handle);
 297    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 298            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 299    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 300    fprintf(stderr,
 301            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 302            sarea->rotated_offset, sarea->rotated_size);
 303    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 304 }
 305
 306
 307 /**
 308  * A number of the screen parameters are obtained/computed from
 309  * information in the SAREA.  This function updates those parameters.
 310  */
 311 void
 312 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 313                            drmI830Sarea * sarea)
 314 {
 315    intelScreen->width = sarea->width;
 316    intelScreen->height = sarea->height;
 317
 318    intelScreen->front.offset = sarea->front_offset;
 319    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 320    intelScreen->front.handle = sarea->front_handle;
 321    intelScreen->front.size = sarea->front_size;
 322
 323    intelScreen->back.offset = sarea->back_offset;
 324    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 325    intelScreen->back.handle = sarea->back_handle;
 326    intelScreen->back.size = sarea->back_size;
 327
 328    intelScreen->depth.offset = sarea->depth_offset;
 329    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 330    intelScreen->depth.handle = sarea->depth_handle;
 331    intelScreen->depth.size = sarea->depth_size;
 332
 333    intelScreen->tex.offset = sarea->tex_offset;
 334    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 335    intelScreen->tex.handle = sarea->tex_handle;
 336    intelScreen->tex.size = sarea->tex_size;
 337
 338    intelScreen->rotated.offset = sarea->rotated_offset;
 339    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 340    intelScreen->rotated.size = sarea->rotated_size;
 341    intelScreen->current_rotation = sarea->rotation;
 342    matrix23Rotate(&intelScreen->rotMatrix,
 343                   sarea->width, sarea->height, sarea->rotation);
 344    intelScreen->rotatedWidth = sarea->virtualX;
 345    intelScreen->rotatedHeight = sarea->virtualY;
 346
 347    if (0)
 348       intelPrintSAREA(sarea);
 349 }
 350
 351
 352 static GLboolean
 353 intelInitDriver(__DRIscreenPrivate * sPriv)
 354 {
 355    intelScreenPrivate *intelScreen;
 356    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 357    drmI830Sarea *sarea;
 358    unsigned batchPoolSize = 1024*1024;
 359
 360    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 361       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
 362                                       getProcAddress("glxEnableExtension"));
 363    void *const psc = sPriv->psc->screenConfigs;
 364
 365    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 366       fprintf(stderr,
 367               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 368       return GL_FALSE;
 369    }
 370
 371    /* Allocate the private area */
 372    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 373    if (!intelScreen) {
 374       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 375       return GL_FALSE;
 376    }
 377    /* parse information in __driConfigOptions */
 378    driParseOptionInfo(&intelScreen->optionCache,
 379                       __driConfigOptions, __driNConfigOptions);
 380
 381    intelScreen->driScrnPriv = sPriv;
 382    sPriv->private = (void *) intelScreen;
 383    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 384    sarea = (drmI830Sarea *)
 385       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 386
 387    intelScreen->maxBatchSize = BATCH_SZ;
 388    intelScreen->deviceID = gDRIPriv->deviceID;
 389    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 390       intelScreen->maxBatchSize = 4096;
 391    batchPoolSize /= intelScreen->maxBatchSize;
 392
 393    intelScreen->mem = gDRIPriv->mem;
 394    intelScreen->cpp = gDRIPriv->cpp;
 395
 396    switch (gDRIPriv->bitsPerPixel) {
 397    case 16:
 398       intelScreen->fbFormat = DV_PF_565;
 399       break;
 400    case 32:
 401       intelScreen->fbFormat = DV_PF_8888;
 402       break;
 403    default:
 404       exit(1);
 405       break;
 406    }
 407
 408    intelUpdateScreenFromSAREA(intelScreen, sarea);
 409
 410    if (!intelMapScreenRegions(sPriv)) {
 411       fprintf(stderr, "\nERROR!  mapping regions\n");
 412       _mesa_free(intelScreen);
 413       sPriv->private = NULL;
 414       return GL_FALSE;
 415    }
 416
 417 #if 0
 418
 419    /*
 420     * FIXME: Remove this code and its references.
 421     */
 422
 423    intelScreen->tex.offset = gDRIPriv->textureOffset;
 424    intelScreen->logTextureGranularity = gDRIPriv->logTextureGranularity;
 425    intelScreen->tex.handle = gDRIPriv->textures;
 426    intelScreen->tex.size = gDRIPriv->textureSize;
 427
 428 #else
 429    intelScreen->tex.offset = 0;
 430    intelScreen->logTextureGranularity = 0;
 431    intelScreen->tex.handle = 0;
 432    intelScreen->tex.size = 0;
 433 #endif
 434
 435    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 436
 437    if (0)
 438       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 439
 440    intelScreen->drmMinor = sPriv->drmMinor;
 441
 442    /* Determine if IRQs are active? */
 443    {
 444       int ret;
 445       drmI830GetParam gp;
 446
 447       gp.param = I830_PARAM_IRQ_ACTIVE;
 448       gp.value = &intelScreen->irq_active;
 449
 450       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 451                                 &gp, sizeof(gp));
 452       if (ret) {
 453          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 454          return GL_FALSE;
 455       }
 456    }
 457
 458    /* Determine if batchbuffers are allowed */
 459    {
 460       int ret;
 461       drmI830GetParam gp;
 462
 463       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 464       gp.value = &intelScreen->allow_batchbuffer;
 465
 466       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 467                                 &gp, sizeof(gp));
 468       if (ret) {
 469          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 470          return GL_FALSE;
 471       }
 472    }
 473
 474    if (glx_enable_extension != NULL) {
 475       (*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 476       (*glx_enable_extension) (psc, "GLX_SGI_video_sync");
 477       (*glx_enable_extension) (psc, "GLX_MESA_swap_control");
 478       (*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
 479       (*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
 480    }
 481
 482    intelScreen->regionPool = driDRMPoolInit(sPriv->fd);
 483
 484    if (!intelScreen->regionPool)
 485       return GL_FALSE;
 486
 487    intelScreen->staticPool = driDRMStaticPoolInit(sPriv->fd);
 488
 489    if (!intelScreen->staticPool)
 490       return GL_FALSE;
 491
 492    intelScreen->texPool = intelScreen->regionPool;
 493
 494    intelScreen->batchPool = driBatchPoolInit(sPriv->fd,
 495                                              DRM_BO_FLAG_EXE |
 496                                              DRM_BO_FLAG_MEM_TT |
 497                                              DRM_BO_FLAG_MEM_LOCAL,
 498                                              intelScreen->maxBatchSize,
 499                                              batchPoolSize, 5);
 500    if (!intelScreen->batchPool) {
 501       fprintf(stderr, "Failed to initialize batch pool - possible incorrect agpgart installed\n");
 502       return GL_FALSE;
 503    }
 504
 505    intel_recreate_static_regions(intelScreen);
 506
 507    return GL_TRUE;
 508 }
 509
 510
 511 static void
 512 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 513 {
 514    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 515
 516    intelUnmapScreenRegions(intelScreen);
 517
 518    driPoolTakeDown(intelScreen->regionPool);
 519    driPoolTakeDown(intelScreen->staticPool);
 520    driPoolTakeDown(intelScreen->batchPool);
 521    FREE(intelScreen);
 522    sPriv->private = NULL;
 523 }
 524
 525
 526 /**
 527  * This is called when we need to set up GL rendering to a new X window.
 528  */
 529 static GLboolean
 530 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 531                   __DRIdrawablePrivate * driDrawPriv,
 532                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 533 {
 534    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 535
 536    if (isPixmap) {
 537       return GL_FALSE;          /* not implemented */
 538    }
 539    else {
 540       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 541                              mesaVis->depthBits != 24);
 542       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 543
 544       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 545
 546       /* setup the hardware-based renderbuffers */
 547       {
 548          struct intel_renderbuffer *frontRb
 549             = intel_create_renderbuffer(rgbFormat,
 550                                         screen->width, screen->height,
 551                                         screen->front.offset,
 552                                         screen->front.pitch,
 553                                         screen->cpp,
 554                                         screen->front.map);
 555          intel_set_span_functions(&frontRb->Base);
 556          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 557       }
 558
 559       if (mesaVis->doubleBufferMode) {
 560          struct intel_renderbuffer *backRb
 561             = intel_create_renderbuffer(rgbFormat,
 562                                         screen->width, screen->height,
 563                                         screen->back.offset,
 564                                         screen->back.pitch,
 565                                         screen->cpp,
 566                                         screen->back.map);
 567          intel_set_span_functions(&backRb->Base);
 568          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 569       }
 570
 571       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 572          /* combined depth/stencil buffer */
 573          struct intel_renderbuffer *depthStencilRb
 574             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 575                                         screen->width, screen->height,
 576                                         screen->depth.offset,
 577                                         screen->depth.pitch,
 578                                         screen->cpp,    /* 4! */
 579                                         screen->depth.map);
 580          intel_set_span_functions(&depthStencilRb->Base);
 581          /* note: bind RB to two attachment points */
 582          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 583          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 584       }
 585       else if (mesaVis->depthBits == 16) {
 586          /* just 16-bit depth buffer, no hw stencil */
 587          struct intel_renderbuffer *depthRb
 588             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 589                                         screen->width, screen->height,
 590                                         screen->depth.offset,
 591                                         screen->depth.pitch,
 592                                         screen->cpp,    /* 2! */
 593                                         screen->depth.map);
 594          intel_set_span_functions(&depthRb->Base);
 595          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 596       }
 597
 598       /* now add any/all software-based renderbuffers we may need */
 599       _mesa_add_soft_renderbuffers(fb, GL_FALSE,        /* never sw color */
 600                                    GL_FALSE,    /* never sw depth */
 601                                    swStencil, mesaVis->accumRedBits > 0, GL_FALSE,      /* never sw alpha */
 602                                    GL_FALSE /* never sw aux */ );
 603       driDrawPriv->driverPrivate = (void *) fb;
 604
 605       return (driDrawPriv->driverPrivate != NULL);
 606    }
 607 }
 608
 609 static void
 610 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 611 {
 612    _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
 613 }
 614
 615
 616 /**
 617  * Get information about previous buffer swaps.
 618  */
 619 static int
 620 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 621 {
 622    struct intel_context *intel;
 623
 624    if ((dPriv == NULL) || (dPriv->driContextPriv == NULL)
 625        || (dPriv->driContextPriv->driverPrivate == NULL)
 626        || (sInfo == NULL)) {
 627       return -1;
 628    }
 629
 630    intel = dPriv->driContextPriv->driverPrivate;
 631    sInfo->swap_count = intel->swap_count;
 632    sInfo->swap_ust = intel->swap_ust;
 633    sInfo->swap_missed_count = intel->swap_missed_count;
 634
 635    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 636       ? driCalculateSwapUsage(dPriv, 0, intel->swap_missed_ust)
 637       : 0.0;
 638
 639    return 0;
 640 }
 641
 642
 643 /* There are probably better ways to do this, such as an
 644  * init-designated function to register chipids and createcontext
 645  * functions.
 646  */
 647 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 648                                    __DRIcontextPrivate * driContextPriv,
 649                                    void *sharedContextPrivate);
 650
 651 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 652                                    __DRIcontextPrivate * driContextPriv,
 653                                    void *sharedContextPrivate);
 654
 655
 656
 657
 658 static GLboolean
 659 intelCreateContext(const __GLcontextModes * mesaVis,
 660                    __DRIcontextPrivate * driContextPriv,
 661                    void *sharedContextPrivate)
 662 {
 663    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 664    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 665
 666    switch (intelScreen->deviceID) {
 667       /* Don't deal with i830 until texture work complete:
 668        */
 669    case PCI_CHIP_845_G:
 670    case PCI_CHIP_I830_M:
 671    case PCI_CHIP_I855_GM:
 672    case PCI_CHIP_I865_G:
 673       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 674
 675    case PCI_CHIP_I915_G:
 676    case PCI_CHIP_I915_GM:
 677    case PCI_CHIP_I945_G:
 678    case PCI_CHIP_I945_GM:
 679       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 680
 681    default:
 682       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 683       return GL_FALSE;
 684    }
 685 }
 686
 687
 688 static const struct __DriverAPIRec intelAPI = {
 689    .InitDriver = intelInitDriver,
 690    .DestroyScreen = intelDestroyScreen,
 691    .CreateContext = intelCreateContext,
 692    .DestroyContext = intelDestroyContext,
 693    .CreateBuffer = intelCreateBuffer,
 694    .DestroyBuffer = intelDestroyBuffer,
 695    .SwapBuffers = intelSwapBuffers,
 696    .MakeCurrent = intelMakeCurrent,
 697    .UnbindContext = intelUnbindContext,
 698    .GetSwapInfo = intelGetSwapInfo,
 699    .GetMSC = driGetMSC32,
 700    .WaitForMSC = driWaitForMSC32,
 701    .WaitForSBC = NULL,
 702    .SwapBuffersMSC = NULL,
 703    .CopySubBuffer = intelCopySubBuffer
 704 };
 705
 706
 707 static __GLcontextModes *
 708 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 709                  unsigned stencil_bits, GLboolean have_back_buffer)
 710 {
 711    __GLcontextModes *modes;
 712    __GLcontextModes *m;
 713    unsigned num_modes;
 714    unsigned depth_buffer_factor;
 715    unsigned back_buffer_factor;
 716    GLenum fb_format;
 717    GLenum fb_type;
 718
 719    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 720     * support pageflipping at all.
 721     */
 722    static const GLenum back_buffer_modes[] = {
 723       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 724    };
 725
 726    u_int8_t depth_bits_array[3];
 727    u_int8_t stencil_bits_array[3];
 728
 729
 730    depth_bits_array[0] = 0;
 731    depth_bits_array[1] = depth_bits;
 732    depth_bits_array[2] = depth_bits;
 733
 734    /* Just like with the accumulation buffer, always provide some modes
 735     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 736     * care about that.
 737     */
 738    stencil_bits_array[0] = 0;
 739    stencil_bits_array[1] = 0;
 740    if (depth_bits == 24)
 741       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 742
 743    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 744
 745    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 746    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 747
 748    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 749
 750    if (pixel_bits == 16) {
 751       fb_format = GL_RGB;
 752       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 753    }
 754    else {
 755       fb_format = GL_BGRA;
 756       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 757    }
 758
 759    modes =
 760       (*dri_interface->createContextModes) (num_modes,
 761                                             sizeof(__GLcontextModes));
 762    m = modes;
 763    if (!driFillInModes(&m, fb_format, fb_type,
 764                        depth_bits_array, stencil_bits_array,
 765                        depth_buffer_factor, back_buffer_modes,
 766                        back_buffer_factor, GLX_TRUE_COLOR)) {
 767       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 768               __LINE__);
 769       return NULL;
 770    }
 771    if (!driFillInModes(&m, fb_format, fb_type,
 772                        depth_bits_array, stencil_bits_array,
 773                        depth_buffer_factor, back_buffer_modes,
 774                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 775       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 776               __LINE__);
 777       return NULL;
 778    }
 779
 780    /* Mark the visual as slow if there are "fake" stencil bits.
 781     */
 782    for (m = modes; m != NULL; m = m->next) {
 783       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 784          m->visualRating = GLX_SLOW_CONFIG;
 785       }
 786    }
 787
 788    return modes;
 789 }
 790
 791
 792 /**
 793  * This is the bootstrap function for the driver.  libGL supplies all of the
 794  * requisite information about the system, and the driver initializes itself.
 795  * This routine also fills in the linked list pointed to by \c driver_modes
 796  * with the \c __GLcontextModes that the driver can support for windows or
 797  * pbuffers.
 798  *
 799  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 800  *         failure.
 801  */
 802 PUBLIC void *
 803 __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
 804                               __DRIscreen * psc,
 805                               const __GLcontextModes * modes,
 806                               const __DRIversion * ddx_version,
 807                               const __DRIversion * dri_version,
 808                               const __DRIversion * drm_version,
 809                               const __DRIframebuffer * frame_buffer,
 810                               drmAddress pSAREA, int fd,
 811                               int internal_api_version,
 812                               const __DRIinterfaceMethods * interface,
 813                               __GLcontextModes ** driver_modes)
 814 {
 815    __DRIscreenPrivate *psp;
 816    static const __DRIversion ddx_expected = { 1, 5, 0 };
 817    static const __DRIversion dri_expected = { 4, 0, 0 };
 818    static const __DRIversion drm_expected = { 1, 7, 0 };
 819
 820    dri_interface = interface;
 821
 822    if (!driCheckDriDdxDrmVersions2("i915",
 823                                    dri_version, &dri_expected,
 824                                    ddx_version, &ddx_expected,
 825                                    drm_version, &drm_expected)) {
 826       return NULL;
 827    }
 828
 829    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 830                                   ddx_version, dri_version, drm_version,
 831                                   frame_buffer, pSAREA, fd,
 832                                   internal_api_version, &intelAPI);
 833    if (psp != NULL) {
 834       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 835       *driver_modes = intelFillInModes(dri_priv->cpp * 8,
 836                                        (dri_priv->cpp == 2) ? 16 : 24,
 837                                        (dri_priv->cpp == 2) ? 0 : 8, 1);
 838
 839       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 840        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 841        * the extensions that *might* be enables are known.  This is needed because the
 842        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 843        * enable the extensions until we have a context pointer.
 844        *
 845        * Hello chicken.  Hello egg.  How are you two today?
 846        */
 847       driInitExtensions(NULL, card_extensions, GL_FALSE);
 848    }
 849
 850    return (void *) psp;
 851 }
 852
 853 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 854 {
 855   /*
 856    * This should probably change to have the screen allocate a dummy
 857    * context at screen creation. For now just use the current context.
 858    */
 859
 860   GET_CURRENT_CONTEXT(ctx);
 861   if (ctx == NULL) {
 862      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 863      return NULL;
 864   }
 865   return intel_context(ctx);
 866 }
 867