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    _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
  92    if (drmMap(sPriv->fd,
  93               intelScreen->back.handle,
  94               intelScreen->back.size,
  95               (drmAddress *) & intelScreen->back.map) != 0) {
  96       intelUnmapScreenRegions(intelScreen);
  97       return GL_FALSE;
  98    }
  99
 100    _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 101    if (drmMap(sPriv->fd,
 102               intelScreen->depth.handle,
 103               intelScreen->depth.size,
 104               (drmAddress *) & intelScreen->depth.map) != 0) {
 105       intelUnmapScreenRegions(intelScreen);
 106       return GL_FALSE;
 107    }
 108
 109 #if 0
 110    _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 111    if (drmMap(sPriv->fd,
 112               intelScreen->tex.handle,
 113               intelScreen->tex.size,
 114               (drmAddress *) & intelScreen->tex.map) != 0) {
 115       intelUnmapScreenRegions(intelScreen);
 116       return GL_FALSE;
 117    }
 118 #endif
 119    if (0)
 120       printf("Mappings:  front: %p  back: %p  depth: %p  tex: %p\n",
 121              intelScreen->front.map,
 122              intelScreen->back.map,
 123              intelScreen->depth.map, intelScreen->tex.map);
 124    return GL_TRUE;
 125 }
 126
 127
 128 static struct intel_region *
 129 intel_recreate_static(intelScreenPrivate *intelScreen,
 130                       struct intel_region *region,
 131                       GLuint mem_type,
 132                       GLuint offset,
 133                       void *virtual,
 134                       GLuint cpp, GLuint pitch, GLuint height)
 135 {
 136   if (region) {
 137     intel_region_update_static(intelScreen, region, mem_type, offset,
 138                                virtual, cpp, pitch, height);
 139   } else {
 140     region = intel_region_create_static(intelScreen, mem_type, offset,
 141                                         virtual, cpp, pitch, height);
 142   }
 143   return region;
 144 }
 145
 146
 147 /* Create intel_region structs to describe the static front,back,depth
 148  * buffers created by the xserver.
 149  *
 150  * Although FBO's mean we now no longer use these as render targets in
 151  * all circumstances, they won't go away until the back and depth
 152  * buffers become private, and the front and rotated buffers will
 153  * remain even then.
 154  *
 155  * Note that these don't allocate video memory, just describe
 156  * allocations alread made by the X server.
 157  */
 158 static void
 159 intel_recreate_static_regions(intelScreenPrivate *intelScreen)
 160 {
 161    intelScreen->front_region =
 162       intel_recreate_static(intelScreen,
 163                             intelScreen->front_region,
 164                             DRM_BO_FLAG_MEM_TT,
 165                             intelScreen->front.offset,
 166                             intelScreen->front.map,
 167                             intelScreen->cpp,
 168                             intelScreen->front.pitch / intelScreen->cpp,
 169                             intelScreen->height);
 170
 171    intelScreen->rotated_region =
 172       intel_recreate_static(intelScreen,
 173                             intelScreen->rotated_region,
 174                             DRM_BO_FLAG_MEM_TT,
 175                             intelScreen->rotated.offset,
 176                             intelScreen->rotated.map,
 177                             intelScreen->cpp,
 178                             intelScreen->rotated.pitch /
 179                             intelScreen->cpp, intelScreen->height);
 180
 181
 182    intelScreen->back_region =
 183       intel_recreate_static(intelScreen,
 184                             intelScreen->back_region,
 185                             DRM_BO_FLAG_MEM_TT,
 186                             intelScreen->back.offset,
 187                             intelScreen->back.map,
 188                             intelScreen->cpp,
 189                             intelScreen->back.pitch / intelScreen->cpp,
 190                             intelScreen->height);
 191
 192    /* Still assuming front.cpp == depth.cpp
 193     */
 194    intelScreen->depth_region =
 195       intel_recreate_static(intelScreen,
 196                             intelScreen->depth_region,
 197                             DRM_BO_FLAG_MEM_TT,
 198                             intelScreen->depth.offset,
 199                             intelScreen->depth.map,
 200                             intelScreen->cpp,
 201                             intelScreen->depth.pitch / intelScreen->cpp,
 202                             intelScreen->height);
 203 }
 204
 205 /**
 206  * Use the information in the sarea to update the screen parameters
 207  * related to screen rotation. Needs to be called locked.
 208  */
 209 void
 210 intelUpdateScreenRotation(__DRIscreenPrivate * sPriv, drmI830Sarea * sarea)
 211 {
 212    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 213
 214    intelUnmapScreenRegions(intelScreen);
 215    intelUpdateScreenFromSAREA(intelScreen, sarea);
 216    if (!intelMapScreenRegions(sPriv)) {
 217       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 218    }
 219    intel_recreate_static_regions(intelScreen);
 220 }
 221
 222
 223 void
 224 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 225 {
 226 #define REALLY_UNMAP 1
 227    if (intelScreen->front.map) {
 228 #if REALLY_UNMAP
 229       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 230          printf("drmUnmap front failed!\n");
 231 #endif
 232       intelScreen->front.map = NULL;
 233    }
 234    if (intelScreen->back.map) {
 235 #if REALLY_UNMAP
 236       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 237          printf("drmUnmap back failed!\n");
 238 #endif
 239       intelScreen->back.map = NULL;
 240    }
 241    if (intelScreen->depth.map) {
 242 #if REALLY_UNMAP
 243       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 244       intelScreen->depth.map = NULL;
 245 #endif
 246    }
 247    if (intelScreen->tex.map) {
 248 #if REALLY_UNMAP
 249       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 250       intelScreen->tex.map = NULL;
 251 #endif
 252    }
 253 }
 254
 255
 256 static void
 257 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 258                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 259 {
 260    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 261            intelScreen->front.size, intelScreen->front.offset,
 262            intelScreen->front.pitch);
 263    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 264            intelScreen->back.size, intelScreen->back.offset,
 265            intelScreen->back.pitch);
 266    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 267            intelScreen->depth.size, intelScreen->depth.offset,
 268            intelScreen->depth.pitch);
 269    fprintf(stderr, "*** Rotated size: 0x%x  offset: 0x%x  pitch: %d\n",
 270            intelScreen->rotated.size, intelScreen->rotated.offset,
 271            intelScreen->rotated.pitch);
 272    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 273            intelScreen->tex.size, intelScreen->tex.offset);
 274    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 275 }
 276
 277
 278 static void
 279 intelPrintSAREA(const drmI830Sarea * sarea)
 280 {
 281    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 282            sarea->height);
 283    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 284    fprintf(stderr,
 285            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 286            sarea->front_offset, sarea->front_size,
 287            (unsigned) sarea->front_handle);
 288    fprintf(stderr,
 289            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 290            sarea->back_offset, sarea->back_size,
 291            (unsigned) sarea->back_handle);
 292    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 293            sarea->depth_offset, sarea->depth_size,
 294            (unsigned) sarea->depth_handle);
 295    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 296            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 297    fprintf(stderr, "SAREA: rotation: %d\n", sarea->rotation);
 298    fprintf(stderr,
 299            "SAREA: rotated offset: 0x%08x  size: 0x%x\n",
 300            sarea->rotated_offset, sarea->rotated_size);
 301    fprintf(stderr, "SAREA: rotated pitch: %d\n", sarea->rotated_pitch);
 302 }
 303
 304
 305 /**
 306  * A number of the screen parameters are obtained/computed from
 307  * information in the SAREA.  This function updates those parameters.
 308  */
 309 void
 310 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 311                            drmI830Sarea * sarea)
 312 {
 313    intelScreen->width = sarea->width;
 314    intelScreen->height = sarea->height;
 315
 316    intelScreen->front.offset = sarea->front_offset;
 317    intelScreen->front.pitch = sarea->pitch * intelScreen->cpp;
 318    intelScreen->front.handle = sarea->front_handle;
 319    intelScreen->front.size = sarea->front_size;
 320
 321    intelScreen->back.offset = sarea->back_offset;
 322    intelScreen->back.pitch = sarea->pitch * intelScreen->cpp;
 323    intelScreen->back.handle = sarea->back_handle;
 324    intelScreen->back.size = sarea->back_size;
 325
 326    intelScreen->depth.offset = sarea->depth_offset;
 327    intelScreen->depth.pitch = sarea->pitch * intelScreen->cpp;
 328    intelScreen->depth.handle = sarea->depth_handle;
 329    intelScreen->depth.size = sarea->depth_size;
 330
 331    intelScreen->tex.offset = sarea->tex_offset;
 332    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 333    intelScreen->tex.handle = sarea->tex_handle;
 334    intelScreen->tex.size = sarea->tex_size;
 335
 336    intelScreen->rotated.offset = sarea->rotated_offset;
 337    intelScreen->rotated.pitch = sarea->rotated_pitch * intelScreen->cpp;
 338    intelScreen->rotated.size = sarea->rotated_size;
 339    intelScreen->current_rotation = sarea->rotation;
 340    matrix23Rotate(&intelScreen->rotMatrix,
 341                   sarea->width, sarea->height, sarea->rotation);
 342    intelScreen->rotatedWidth = sarea->virtualX;
 343    intelScreen->rotatedHeight = sarea->virtualY;
 344
 345    if (0)
 346       intelPrintSAREA(sarea);
 347 }
 348
 349
 350 static GLboolean
 351 intelInitDriver(__DRIscreenPrivate * sPriv)
 352 {
 353    intelScreenPrivate *intelScreen;
 354    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 355    drmI830Sarea *sarea;
 356    unsigned batchPoolSize = 1024*1024;
 357
 358    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
 359       (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->
 360                                       getProcAddress("glxEnableExtension"));
 361    void *const psc = sPriv->psc->screenConfigs;
 362
 363    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 364       fprintf(stderr,
 365               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 366       return GL_FALSE;
 367    }
 368
 369    /* Allocate the private area */
 370    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 371    if (!intelScreen) {
 372       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 373       return GL_FALSE;
 374    }
 375    /* parse information in __driConfigOptions */
 376    driParseOptionInfo(&intelScreen->optionCache,
 377                       __driConfigOptions, __driNConfigOptions);
 378
 379    intelScreen->driScrnPriv = sPriv;
 380    sPriv->private = (void *) intelScreen;
 381    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 382    sarea = (drmI830Sarea *)
 383       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 384
 385    intelScreen->maxBatchSize = BATCH_SZ;
 386    intelScreen->deviceID = gDRIPriv->deviceID;
 387    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 388       intelScreen->maxBatchSize = 4096;
 389    batchPoolSize /= intelScreen->maxBatchSize;
 390
 391    intelScreen->mem = gDRIPriv->mem;
 392    intelScreen->cpp = gDRIPriv->cpp;
 393
 394    switch (gDRIPriv->bitsPerPixel) {
 395    case 16:
 396       intelScreen->fbFormat = DV_PF_565;
 397       break;
 398    case 32:
 399       intelScreen->fbFormat = DV_PF_8888;
 400       break;
 401    default:
 402       exit(1);
 403       break;
 404    }
 405
 406    intelUpdateScreenFromSAREA(intelScreen, sarea);
 407
 408    if (!intelMapScreenRegions(sPriv)) {
 409       fprintf(stderr, "\nERROR!  mapping regions\n");
 410       _mesa_free(intelScreen);
 411       sPriv->private = NULL;
 412       return GL_FALSE;
 413    }
 414
 415 #if 0
 416
 417    /*
 418     * FIXME: Remove this code and its references.
 419     */
 420
 421    intelScreen->tex.offset = gDRIPriv->textureOffset;
 422    intelScreen->logTextureGranularity = gDRIPriv->logTextureGranularity;
 423    intelScreen->tex.handle = gDRIPriv->textures;
 424    intelScreen->tex.size = gDRIPriv->textureSize;
 425
 426 #else
 427    intelScreen->tex.offset = 0;
 428    intelScreen->logTextureGranularity = 0;
 429    intelScreen->tex.handle = 0;
 430    intelScreen->tex.size = 0;
 431 #endif
 432
 433    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 434
 435    if (1)
 436       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 437
 438    intelScreen->drmMinor = sPriv->drmMinor;
 439
 440    /* Determine if IRQs are active? */
 441    {
 442       int ret;
 443       drmI830GetParam gp;
 444
 445       gp.param = I830_PARAM_IRQ_ACTIVE;
 446       gp.value = &intelScreen->irq_active;
 447
 448       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 449                                 &gp, sizeof(gp));
 450       if (ret) {
 451          fprintf(stderr, "drmI830GetParam: %d\n", ret);
 452          return GL_FALSE;
 453       }
 454    }
 455
 456    /* Determine if batchbuffers are allowed */
 457    {
 458       int ret;
 459       drmI830GetParam gp;
 460
 461       gp.param = I830_PARAM_ALLOW_BATCHBUFFER;
 462       gp.value = &intelScreen->allow_batchbuffer;
 463
 464       ret = drmCommandWriteRead(sPriv->fd, DRM_I830_GETPARAM,
 465                                 &gp, sizeof(gp));
 466       if (ret) {
 467          fprintf(stderr, "drmI830GetParam: (%d) %d\n", gp.param, ret);
 468          return GL_FALSE;
 469       }
 470    }
 471
 472    if (glx_enable_extension != NULL) {
 473       (*glx_enable_extension) (psc, "GLX_SGI_swap_control");
 474       (*glx_enable_extension) (psc, "GLX_SGI_video_sync");
 475       (*glx_enable_extension) (psc, "GLX_MESA_swap_control");
 476       (*glx_enable_extension) (psc, "GLX_MESA_swap_frame_usage");
 477       (*glx_enable_extension) (psc, "GLX_SGI_make_current_read");
 478    }
 479
 480    intelScreen->regionPool = driDRMPoolInit(sPriv->fd);
 481
 482    if (!intelScreen->regionPool)
 483       return GL_FALSE;
 484
 485    intelScreen->staticPool = driDRMStaticPoolInit(sPriv->fd);
 486
 487    if (!intelScreen->staticPool)
 488       return GL_FALSE;
 489
 490    intelScreen->texPool = intelScreen->regionPool;
 491
 492    intelScreen->batchPool = driBatchPoolInit(sPriv->fd,
 493                                              DRM_BO_FLAG_EXE |
 494                                              DRM_BO_FLAG_MEM_TT |
 495                                              DRM_BO_FLAG_MEM_LOCAL,
 496                                              intelScreen->maxBatchSize,
 497                                              batchPoolSize, 5);
 498    if (!intelScreen->batchPool) {
 499       fprintf(stderr, "Failed to initialize batch pool - possible incorrect agpgart installed\n");
 500       return GL_FALSE;
 501    }
 502
 503    intel_recreate_static_regions(intelScreen);
 504
 505    return GL_TRUE;
 506 }
 507
 508
 509 static void
 510 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 511 {
 512    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 513
 514    intelUnmapScreenRegions(intelScreen);
 515
 516    driPoolTakeDown(intelScreen->regionPool);
 517    driPoolTakeDown(intelScreen->staticPool);
 518    driPoolTakeDown(intelScreen->batchPool);
 519    FREE(intelScreen);
 520    sPriv->private = NULL;
 521 }
 522
 523
 524 /**
 525  * This is called when we need to set up GL rendering to a new X window.
 526  */
 527 static GLboolean
 528 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 529                   __DRIdrawablePrivate * driDrawPriv,
 530                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 531 {
 532    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 533
 534    if (isPixmap) {
 535       return GL_FALSE;          /* not implemented */
 536    }
 537    else {
 538       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 539                              mesaVis->depthBits != 24);
 540       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 541
 542       struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
 543
 544       /* setup the hardware-based renderbuffers */
 545       {
 546          struct intel_renderbuffer *frontRb
 547             = intel_create_renderbuffer(rgbFormat,
 548                                         screen->width, screen->height,
 549                                         screen->front.offset,
 550                                         screen->front.pitch,
 551                                         screen->cpp,
 552                                         screen->front.map);
 553          intel_set_span_functions(&frontRb->Base);
 554          _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
 555       }
 556
 557       if (mesaVis->doubleBufferMode) {
 558          struct intel_renderbuffer *backRb
 559             = intel_create_renderbuffer(rgbFormat,
 560                                         screen->width, screen->height,
 561                                         screen->back.offset,
 562                                         screen->back.pitch,
 563                                         screen->cpp,
 564                                         screen->back.map);
 565          intel_set_span_functions(&backRb->Base);
 566          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
 567       }
 568
 569       if (mesaVis->depthBits == 24 && mesaVis->stencilBits == 8) {
 570          /* combined depth/stencil buffer */
 571          struct intel_renderbuffer *depthStencilRb
 572             = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 573                                         screen->width, screen->height,
 574                                         screen->depth.offset,
 575                                         screen->depth.pitch,
 576                                         screen->cpp,    /* 4! */
 577                                         screen->depth.map);
 578          intel_set_span_functions(&depthStencilRb->Base);
 579          /* note: bind RB to two attachment points */
 580          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthStencilRb->Base);
 581          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &depthStencilRb->Base);
 582       }
 583       else if (mesaVis->depthBits == 16) {
 584          /* just 16-bit depth buffer, no hw stencil */
 585          struct intel_renderbuffer *depthRb
 586             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 587                                         screen->width, screen->height,
 588                                         screen->depth.offset,
 589                                         screen->depth.pitch,
 590                                         screen->cpp,    /* 2! */
 591                                         screen->depth.map);
 592          intel_set_span_functions(&depthRb->Base);
 593          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
 594       }
 595
 596       /* now add any/all software-based renderbuffers we may need */
 597       _mesa_add_soft_renderbuffers(fb, GL_FALSE,        /* never sw color */
 598                                    GL_FALSE,    /* never sw depth */
 599                                    swStencil, mesaVis->accumRedBits > 0, GL_FALSE,      /* never sw alpha */
 600                                    GL_FALSE /* never sw aux */ );
 601       driDrawPriv->driverPrivate = (void *) fb;
 602
 603       return (driDrawPriv->driverPrivate != NULL);
 604    }
 605 }
 606
 607 static void
 608 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 609 {
 610    _mesa_destroy_framebuffer((GLframebuffer *) (driDrawPriv->driverPrivate));
 611 }
 612
 613
 614 /**
 615  * Get information about previous buffer swaps.
 616  */
 617 static int
 618 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 619 {
 620    struct intel_context *intel;
 621
 622    if ((dPriv == NULL) || (dPriv->driContextPriv == NULL)
 623        || (dPriv->driContextPriv->driverPrivate == NULL)
 624        || (sInfo == NULL)) {
 625       return -1;
 626    }
 627
 628    intel = dPriv->driContextPriv->driverPrivate;
 629    sInfo->swap_count = intel->swap_count;
 630    sInfo->swap_ust = intel->swap_ust;
 631    sInfo->swap_missed_count = intel->swap_missed_count;
 632
 633    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 634       ? driCalculateSwapUsage(dPriv, 0, intel->swap_missed_ust)
 635       : 0.0;
 636
 637    return 0;
 638 }
 639
 640
 641 /* There are probably better ways to do this, such as an
 642  * init-designated function to register chipids and createcontext
 643  * functions.
 644  */
 645 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 646                                    __DRIcontextPrivate * driContextPriv,
 647                                    void *sharedContextPrivate);
 648
 649 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 650                                    __DRIcontextPrivate * driContextPriv,
 651                                    void *sharedContextPrivate);
 652
 653
 654
 655
 656 static GLboolean
 657 intelCreateContext(const __GLcontextModes * mesaVis,
 658                    __DRIcontextPrivate * driContextPriv,
 659                    void *sharedContextPrivate)
 660 {
 661    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 662    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 663
 664    switch (intelScreen->deviceID) {
 665       /* Don't deal with i830 until texture work complete:
 666        */
 667    case PCI_CHIP_845_G:
 668    case PCI_CHIP_I830_M:
 669    case PCI_CHIP_I855_GM:
 670    case PCI_CHIP_I865_G:
 671       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 672
 673    case PCI_CHIP_I915_G:
 674    case PCI_CHIP_I915_GM:
 675    case PCI_CHIP_I945_G:
 676    case PCI_CHIP_I945_GM:
 677       return i915CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 678
 679    default:
 680       fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 681       return GL_FALSE;
 682    }
 683 }
 684
 685
 686 static const struct __DriverAPIRec intelAPI = {
 687    .InitDriver = intelInitDriver,
 688    .DestroyScreen = intelDestroyScreen,
 689    .CreateContext = intelCreateContext,
 690    .DestroyContext = intelDestroyContext,
 691    .CreateBuffer = intelCreateBuffer,
 692    .DestroyBuffer = intelDestroyBuffer,
 693    .SwapBuffers = intelSwapBuffers,
 694    .MakeCurrent = intelMakeCurrent,
 695    .UnbindContext = intelUnbindContext,
 696    .GetSwapInfo = intelGetSwapInfo,
 697    .GetMSC = driGetMSC32,
 698    .WaitForMSC = driWaitForMSC32,
 699    .WaitForSBC = NULL,
 700    .SwapBuffersMSC = NULL,
 701    .CopySubBuffer = intelCopySubBuffer
 702 };
 703
 704
 705 static __GLcontextModes *
 706 intelFillInModes(unsigned pixel_bits, unsigned depth_bits,
 707                  unsigned stencil_bits, GLboolean have_back_buffer)
 708 {
 709    __GLcontextModes *modes;
 710    __GLcontextModes *m;
 711    unsigned num_modes;
 712    unsigned depth_buffer_factor;
 713    unsigned back_buffer_factor;
 714    GLenum fb_format;
 715    GLenum fb_type;
 716
 717    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 718     * support pageflipping at all.
 719     */
 720    static const GLenum back_buffer_modes[] = {
 721       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 722    };
 723
 724    u_int8_t depth_bits_array[3];
 725    u_int8_t stencil_bits_array[3];
 726
 727
 728    depth_bits_array[0] = 0;
 729    depth_bits_array[1] = depth_bits;
 730    depth_bits_array[2] = depth_bits;
 731
 732    /* Just like with the accumulation buffer, always provide some modes
 733     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 734     * care about that.
 735     */
 736    stencil_bits_array[0] = 0;
 737    stencil_bits_array[1] = 0;
 738    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 739
 740    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 741    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 742
 743    num_modes = depth_buffer_factor * back_buffer_factor * 4;
 744
 745    if (pixel_bits == 16) {
 746       fb_format = GL_RGB;
 747       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 748    }
 749    else {
 750       fb_format = GL_BGRA;
 751       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 752    }
 753
 754    modes =
 755       (*dri_interface->createContextModes) (num_modes,
 756                                             sizeof(__GLcontextModes));
 757    m = modes;
 758    if (!driFillInModes(&m, fb_format, fb_type,
 759                        depth_bits_array, stencil_bits_array,
 760                        depth_buffer_factor, back_buffer_modes,
 761                        back_buffer_factor, GLX_TRUE_COLOR)) {
 762       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 763               __LINE__);
 764       return NULL;
 765    }
 766    if (!driFillInModes(&m, fb_format, fb_type,
 767                        depth_bits_array, stencil_bits_array,
 768                        depth_buffer_factor, back_buffer_modes,
 769                        back_buffer_factor, GLX_DIRECT_COLOR)) {
 770       fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 771               __LINE__);
 772       return NULL;
 773    }
 774
 775    /* Mark the visual as slow if there are "fake" stencil bits.
 776     */
 777    for (m = modes; m != NULL; m = m->next) {
 778       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 779          m->visualRating = GLX_SLOW_CONFIG;
 780       }
 781    }
 782
 783    return modes;
 784 }
 785
 786
 787 /**
 788  * This is the bootstrap function for the driver.  libGL supplies all of the
 789  * requisite information about the system, and the driver initializes itself.
 790  * This routine also fills in the linked list pointed to by \c driver_modes
 791  * with the \c __GLcontextModes that the driver can support for windows or
 792  * pbuffers.
 793  *
 794  * \return A pointer to a \c __DRIscreenPrivate on success, or \c NULL on
 795  *         failure.
 796  */
 797 PUBLIC void *
 798 __driCreateNewScreen_20050727(__DRInativeDisplay * dpy, int scrn,
 799                               __DRIscreen * psc,
 800                               const __GLcontextModes * modes,
 801                               const __DRIversion * ddx_version,
 802                               const __DRIversion * dri_version,
 803                               const __DRIversion * drm_version,
 804                               const __DRIframebuffer * frame_buffer,
 805                               drmAddress pSAREA, int fd,
 806                               int internal_api_version,
 807                               const __DRIinterfaceMethods * interface,
 808                               __GLcontextModes ** driver_modes)
 809 {
 810    __DRIscreenPrivate *psp;
 811    static const __DRIversion ddx_expected = { 1, 5, 0 };
 812    static const __DRIversion dri_expected = { 4, 0, 0 };
 813    static const __DRIversion drm_expected = { 1, 7, 0 };
 814
 815    dri_interface = interface;
 816
 817    if (!driCheckDriDdxDrmVersions2("i915",
 818                                    dri_version, &dri_expected,
 819                                    ddx_version, &ddx_expected,
 820                                    drm_version, &drm_expected)) {
 821       return NULL;
 822    }
 823
 824    psp = __driUtilCreateNewScreen(dpy, scrn, psc, NULL,
 825                                   ddx_version, dri_version, drm_version,
 826                                   frame_buffer, pSAREA, fd,
 827                                   internal_api_version, &intelAPI);
 828    if (psp != NULL) {
 829       I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 830       *driver_modes = intelFillInModes(dri_priv->cpp * 8,
 831                                        (dri_priv->cpp == 2) ? 16 : 24,
 832                                        (dri_priv->cpp == 2) ? 0 : 8, 1);
 833
 834       /* Calling driInitExtensions here, with a NULL context pointer, does not actually
 835        * enable the extensions.  It just makes sure that all the dispatch offsets for all
 836        * the extensions that *might* be enables are known.  This is needed because the
 837        * dispatch offsets need to be known when _mesa_context_create is called, but we can't
 838        * enable the extensions until we have a context pointer.
 839        *
 840        * Hello chicken.  Hello egg.  How are you two today?
 841        */
 842       driInitExtensions(NULL, card_extensions, GL_FALSE);
 843    }
 844
 845    return (void *) psp;
 846 }
 847
 848 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 849 {
 850   /*
 851    * This should probably change to have the screen allocate a dummy
 852    * context at screen creation. For now just use the current context.
 853    */
 854
 855   GET_CURRENT_CONTEXT(ctx);
 856   if (ctx == NULL) {
 857      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 858      return NULL;
 859   }
 860   return intel_context(ctx);
 861 }
 862