src/mesa/drivers/dri/intel/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_ioctl.h"
  45 #include "intel_fbo.h"
  46 #include "intel_chipset.h"
  47
  48 #include "i915_drm.h"
  49 #include "i830_dri.h"
  50 #include "intel_regions.h"
  51 #include "intel_batchbuffer.h"
  52 #include "intel_bufmgr_gem.h"
  53
  54 PUBLIC const char __driConfigOptions[] =
  55    DRI_CONF_BEGIN
  56    DRI_CONF_SECTION_PERFORMANCE
  57       DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
  58       DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
  59       /* Options correspond to DRI_CONF_BO_REUSE_DISABLED,
  60        * DRI_CONF_BO_REUSE_ALL
  61        */
  62       DRI_CONF_OPT_BEGIN_V(bo_reuse, enum, 0, "0:1")
  63          DRI_CONF_DESC_BEGIN(en, "Buffer object reuse")
  64             DRI_CONF_ENUM(0, "Disable buffer object reuse")
  65             DRI_CONF_ENUM(1, "Enable reuse of all sizes of buffer objects")
  66          DRI_CONF_DESC_END
  67       DRI_CONF_OPT_END
  68    DRI_CONF_SECTION_END
  69    DRI_CONF_SECTION_QUALITY
  70       DRI_CONF_FORCE_S3TC_ENABLE(false)
  71       DRI_CONF_ALLOW_LARGE_TEXTURES(2)
  72    DRI_CONF_SECTION_END
  73    DRI_CONF_SECTION_DEBUG
  74      DRI_CONF_NO_RAST(false)
  75    DRI_CONF_SECTION_END
  76 DRI_CONF_END;
  77
  78 const GLuint __driNConfigOptions = 6;
  79
  80 #ifdef USE_NEW_INTERFACE
  81 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
  82 #endif /*USE_NEW_INTERFACE */
  83
  84 /**
  85  * Map all the memory regions described by the screen.
  86  * \return GL_TRUE if success, GL_FALSE if error.
  87  */
  88 GLboolean
  89 intelMapScreenRegions(__DRIscreenPrivate * sPriv)
  90 {
  91    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
  92
  93    if (intelScreen->front.handle) {
  94       if (drmMap(sPriv->fd,
  95                  intelScreen->front.handle,
  96                  intelScreen->front.size,
  97                  (drmAddress *) & intelScreen->front.map) != 0) {
  98          _mesa_problem(NULL, "drmMap(frontbuffer) failed!");
  99          return GL_FALSE;
 100       }
 101    }
 102    else {
 103       _mesa_warning(NULL, "no front buffer handle in intelMapScreenRegions!");
 104    }
 105
 106    if (0)
 107       _mesa_printf("Back 0x%08x ", intelScreen->back.handle);
 108    if (drmMap(sPriv->fd,
 109               intelScreen->back.handle,
 110               intelScreen->back.size,
 111               (drmAddress *) & intelScreen->back.map) != 0) {
 112       intelUnmapScreenRegions(intelScreen);
 113       return GL_FALSE;
 114    }
 115
 116    if (intelScreen->third.handle) {
 117       if (0)
 118          _mesa_printf("Third 0x%08x ", intelScreen->third.handle);
 119       if (drmMap(sPriv->fd,
 120                  intelScreen->third.handle,
 121                  intelScreen->third.size,
 122                  (drmAddress *) & intelScreen->third.map) != 0) {
 123          intelUnmapScreenRegions(intelScreen);
 124          return GL_FALSE;
 125       }
 126    }
 127
 128    if (0)
 129       _mesa_printf("Depth 0x%08x ", intelScreen->depth.handle);
 130    if (drmMap(sPriv->fd,
 131               intelScreen->depth.handle,
 132               intelScreen->depth.size,
 133               (drmAddress *) & intelScreen->depth.map) != 0) {
 134       intelUnmapScreenRegions(intelScreen);
 135       return GL_FALSE;
 136    }
 137
 138    if (0)
 139       _mesa_printf("TEX 0x%08x ", intelScreen->tex.handle);
 140    if (intelScreen->tex.size != 0) {
 141       if (drmMap(sPriv->fd,
 142                  intelScreen->tex.handle,
 143                  intelScreen->tex.size,
 144                  (drmAddress *) & intelScreen->tex.map) != 0) {
 145          intelUnmapScreenRegions(intelScreen);
 146          return GL_FALSE;
 147       }
 148    }
 149
 150    if (0)
 151       printf("Mappings:  front: %p  back: %p  third: %p  depth: %p  tex: %p\n",
 152              intelScreen->front.map,
 153              intelScreen->back.map, intelScreen->third.map,
 154              intelScreen->depth.map, intelScreen->tex.map);
 155    return GL_TRUE;
 156 }
 157
 158 void
 159 intelUnmapScreenRegions(intelScreenPrivate * intelScreen)
 160 {
 161 #define REALLY_UNMAP 1
 162    if (intelScreen->front.map) {
 163 #if REALLY_UNMAP
 164       if (drmUnmap(intelScreen->front.map, intelScreen->front.size) != 0)
 165          printf("drmUnmap front failed!\n");
 166 #endif
 167       intelScreen->front.map = NULL;
 168    }
 169    if (intelScreen->back.map) {
 170 #if REALLY_UNMAP
 171       if (drmUnmap(intelScreen->back.map, intelScreen->back.size) != 0)
 172          printf("drmUnmap back failed!\n");
 173 #endif
 174       intelScreen->back.map = NULL;
 175    }
 176    if (intelScreen->third.map) {
 177 #if REALLY_UNMAP
 178       if (drmUnmap(intelScreen->third.map, intelScreen->third.size) != 0)
 179          printf("drmUnmap third failed!\n");
 180 #endif
 181       intelScreen->third.map = NULL;
 182    }
 183    if (intelScreen->depth.map) {
 184 #if REALLY_UNMAP
 185       drmUnmap(intelScreen->depth.map, intelScreen->depth.size);
 186       intelScreen->depth.map = NULL;
 187 #endif
 188    }
 189    if (intelScreen->tex.map) {
 190 #if REALLY_UNMAP
 191       drmUnmap(intelScreen->tex.map, intelScreen->tex.size);
 192       intelScreen->tex.map = NULL;
 193 #endif
 194    }
 195 }
 196
 197
 198 static void
 199 intelPrintDRIInfo(intelScreenPrivate * intelScreen,
 200                   __DRIscreenPrivate * sPriv, I830DRIPtr gDRIPriv)
 201 {
 202    fprintf(stderr, "*** Front size:   0x%x  offset: 0x%x  pitch: %d\n",
 203            intelScreen->front.size, intelScreen->front.offset,
 204            intelScreen->pitch);
 205    fprintf(stderr, "*** Back size:    0x%x  offset: 0x%x  pitch: %d\n",
 206            intelScreen->back.size, intelScreen->back.offset,
 207            intelScreen->pitch);
 208    fprintf(stderr, "*** Depth size:   0x%x  offset: 0x%x  pitch: %d\n",
 209            intelScreen->depth.size, intelScreen->depth.offset,
 210            intelScreen->pitch);
 211    fprintf(stderr, "*** Texture size: 0x%x  offset: 0x%x\n",
 212            intelScreen->tex.size, intelScreen->tex.offset);
 213    fprintf(stderr, "*** Memory : 0x%x\n", gDRIPriv->mem);
 214 }
 215
 216
 217 static void
 218 intelPrintSAREA(const struct drm_i915_sarea * sarea)
 219 {
 220    fprintf(stderr, "SAREA: sarea width %d  height %d\n", sarea->width,
 221            sarea->height);
 222    fprintf(stderr, "SAREA: pitch: %d\n", sarea->pitch);
 223    fprintf(stderr,
 224            "SAREA: front offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
 225            sarea->front_offset, sarea->front_size,
 226            (unsigned) sarea->front_handle, sarea->front_tiled);
 227    fprintf(stderr,
 228            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
 229            sarea->back_offset, sarea->back_size,
 230            (unsigned) sarea->back_handle, sarea->back_tiled);
 231    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x tiled: %d\n",
 232            sarea->depth_offset, sarea->depth_size,
 233            (unsigned) sarea->depth_handle, sarea->depth_tiled);
 234    fprintf(stderr, "SAREA: tex   offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 235            sarea->tex_offset, sarea->tex_size, (unsigned) sarea->tex_handle);
 236 }
 237
 238
 239 /**
 240  * A number of the screen parameters are obtained/computed from
 241  * information in the SAREA.  This function updates those parameters.
 242  */
 243 void
 244 intelUpdateScreenFromSAREA(intelScreenPrivate * intelScreen,
 245                            struct drm_i915_sarea * sarea)
 246 {
 247    intelScreen->width = sarea->width;
 248    intelScreen->height = sarea->height;
 249    intelScreen->pitch = sarea->pitch;
 250
 251    intelScreen->front.offset = sarea->front_offset;
 252    intelScreen->front.handle = sarea->front_handle;
 253    intelScreen->front.size = sarea->front_size;
 254    intelScreen->front.tiled = sarea->front_tiled;
 255
 256    intelScreen->back.offset = sarea->back_offset;
 257    intelScreen->back.handle = sarea->back_handle;
 258    intelScreen->back.size = sarea->back_size;
 259    intelScreen->back.tiled = sarea->back_tiled;
 260
 261    if (intelScreen->driScrnPriv->ddx_version.minor >= 8) {
 262       intelScreen->third.offset = sarea->third_offset;
 263       intelScreen->third.handle = sarea->third_handle;
 264       intelScreen->third.size = sarea->third_size;
 265       intelScreen->third.tiled = sarea->third_tiled;
 266    }
 267
 268    intelScreen->depth.offset = sarea->depth_offset;
 269    intelScreen->depth.handle = sarea->depth_handle;
 270    intelScreen->depth.size = sarea->depth_size;
 271    intelScreen->depth.tiled = sarea->depth_tiled;
 272
 273    if (intelScreen->driScrnPriv->ddx_version.minor >= 9) {
 274       intelScreen->front.bo_handle = sarea->front_bo_handle;
 275       intelScreen->back.bo_handle = sarea->back_bo_handle;
 276       intelScreen->third.bo_handle = sarea->third_bo_handle;
 277       intelScreen->depth.bo_handle = sarea->depth_bo_handle;
 278    } else {
 279       intelScreen->front.bo_handle = -1;
 280       intelScreen->back.bo_handle = -1;
 281       intelScreen->third.bo_handle = -1;
 282       intelScreen->depth.bo_handle = -1;
 283    }
 284
 285    intelScreen->tex.offset = sarea->tex_offset;
 286    intelScreen->logTextureGranularity = sarea->log_tex_granularity;
 287    intelScreen->tex.handle = sarea->tex_handle;
 288    intelScreen->tex.size = sarea->tex_size;
 289
 290    if (0)
 291       intelPrintSAREA(sarea);
 292 }
 293
 294 static void
 295 intelHandleDrawableConfig(__DRIdrawablePrivate *dPriv,
 296                           __DRIcontextPrivate *pcp,
 297                           __DRIDrawableConfigEvent *event)
 298 {
 299    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 300    struct intel_region *region = NULL;
 301    struct intel_renderbuffer *rb, *depth_rb, *stencil_rb;
 302    struct intel_context *intel = pcp->driverPrivate;
 303    int cpp, pitch;
 304
 305    cpp = intel->ctx.Visual.rgbBits / 8;
 306    pitch = ((cpp * dPriv->w + 63) & ~63) / cpp;
 307
 308    rb = intel_fb->color_rb[1];
 309    if (rb) {
 310       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 311       intel_renderbuffer_set_region(rb, region);
 312    }
 313
 314    rb = intel_fb->color_rb[2];
 315    if (rb) {
 316       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 317       intel_renderbuffer_set_region(rb, region);
 318    }
 319
 320    depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 321    stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 322    if (depth_rb || stencil_rb)
 323       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 324    if (depth_rb)
 325       intel_renderbuffer_set_region(depth_rb, region);
 326    if (stencil_rb)
 327       intel_renderbuffer_set_region(stencil_rb, region);
 328
 329    /* FIXME: Tell the X server about the regions we just allocated and
 330     * attached. */
 331 }
 332
 333 #define BUFFER_FLAG_TILED 0x0100
 334
 335 static void
 336 intelHandleBufferAttach(__DRIdrawablePrivate *dPriv,
 337                         __DRIcontextPrivate *pcp,
 338                         __DRIBufferAttachEvent *ba)
 339 {
 340    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 341    struct intel_renderbuffer *rb;
 342    struct intel_region *region;
 343    struct intel_context *intel = pcp->driverPrivate;
 344    GLuint tiled;
 345
 346    switch (ba->buffer.attachment) {
 347    case DRI_DRAWABLE_BUFFER_FRONT_LEFT:
 348       rb = intel_fb->color_rb[0];
 349       break;
 350
 351    case DRI_DRAWABLE_BUFFER_BACK_LEFT:
 352       rb = intel_fb->color_rb[0];
 353       break;
 354
 355    case DRI_DRAWABLE_BUFFER_DEPTH:
 356      rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 357      break;
 358
 359    case DRI_DRAWABLE_BUFFER_STENCIL:
 360      rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 361      break;
 362
 363    case DRI_DRAWABLE_BUFFER_ACCUM:
 364    default:
 365       fprintf(stderr, "unhandled buffer attach event, attacment type %d\n",
 366               ba->buffer.attachment);
 367       return;
 368    }
 369
 370 #if 0
 371    /* FIXME: Add this so we can filter out when the X server sends us
 372     * attachment events for the buffers we just allocated.  Need to
 373     * get the BO handle for a render buffer. */
 374    if (intel_renderbuffer_get_region_handle(rb) == ba->buffer.handle)
 375       return;
 376 #endif
 377
 378    tiled = (ba->buffer.flags & BUFFER_FLAG_TILED) > 0;
 379    region = intel_region_alloc_for_handle(intel, ba->buffer.cpp,
 380                                           ba->buffer.pitch / ba->buffer.cpp,
 381                                           dPriv->h, tiled,
 382                                           ba->buffer.handle);
 383
 384    intel_renderbuffer_set_region(rb, region);
 385 }
 386
 387 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 388    { __DRI_TEX_OFFSET },
 389    intelSetTexOffset,
 390 };
 391
 392 static const __DRItexBufferExtension intelTexBufferExtension = {
 393     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 394    intelSetTexBuffer,
 395 };
 396
 397 static const __DRIextension *intelScreenExtensions[] = {
 398     &driReadDrawableExtension,
 399     &driCopySubBufferExtension.base,
 400     &driSwapControlExtension.base,
 401     &driFrameTrackingExtension.base,
 402     &driMediaStreamCounterExtension.base,
 403     &intelTexOffsetExtension.base,
 404     &intelTexBufferExtension.base,
 405     NULL
 406 };
 407
 408 static GLboolean
 409 intel_get_param(__DRIscreenPrivate *psp, int param, int *value)
 410 {
 411    int ret;
 412    struct drm_i915_getparam gp;
 413
 414    gp.param = param;
 415    gp.value = value;
 416
 417    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 418    if (ret) {
 419       fprintf(stderr, "drm_i915_getparam: %d\n", ret);
 420       return GL_FALSE;
 421    }
 422
 423    return GL_TRUE;
 424 }
 425
 426 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 427 {
 428    intelScreenPrivate *intelScreen;
 429    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 430    struct drm_i915_sarea *sarea;
 431
 432    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 433       fprintf(stderr,
 434               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 435       return GL_FALSE;
 436    }
 437
 438    /* Allocate the private area */
 439    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 440    if (!intelScreen) {
 441       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 442       return GL_FALSE;
 443    }
 444    /* parse information in __driConfigOptions */
 445    driParseOptionInfo(&intelScreen->optionCache,
 446                       __driConfigOptions, __driNConfigOptions);
 447
 448    intelScreen->driScrnPriv = sPriv;
 449    sPriv->private = (void *) intelScreen;
 450    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 451    sarea = (struct drm_i915_sarea *)
 452       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 453
 454    intelScreen->deviceID = gDRIPriv->deviceID;
 455
 456    intelUpdateScreenFromSAREA(intelScreen, sarea);
 457
 458    if (!intelMapScreenRegions(sPriv)) {
 459       fprintf(stderr, "\nERROR!  mapping regions\n");
 460       _mesa_free(intelScreen);
 461       sPriv->private = NULL;
 462       return GL_FALSE;
 463    }
 464
 465    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 466
 467    if (0)
 468       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 469
 470    intelScreen->drmMinor = sPriv->drm_version.minor;
 471
 472    /* Determine if IRQs are active? */
 473    if (!intel_get_param(sPriv, I915_PARAM_IRQ_ACTIVE,
 474                         &intelScreen->irq_active))
 475       return GL_FALSE;
 476
 477    /* Determine if batchbuffers are allowed */
 478    if (!intel_get_param(sPriv, I915_PARAM_ALLOW_BATCHBUFFER,
 479                         &intelScreen->allow_batchbuffer))
 480       return GL_FALSE;
 481
 482    sPriv->extensions = intelScreenExtensions;
 483
 484    return GL_TRUE;
 485 }
 486
 487
 488 static void
 489 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 490 {
 491    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 492
 493    intelUnmapScreenRegions(intelScreen);
 494
 495    FREE(intelScreen);
 496    sPriv->private = NULL;
 497 }
 498
 499
 500 /**
 501  * This is called when we need to set up GL rendering to a new X window.
 502  */
 503 static GLboolean
 504 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 505                   __DRIdrawablePrivate * driDrawPriv,
 506                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 507 {
 508    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 509
 510    if (isPixmap) {
 511       return GL_FALSE;          /* not implemented */
 512    }
 513    else {
 514       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 515                              mesaVis->depthBits != 24);
 516       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 517
 518       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 519
 520       if (!intel_fb)
 521          return GL_FALSE;
 522
 523       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 524
 525       /* setup the hardware-based renderbuffers */
 526       {
 527          intel_fb->color_rb[0] = intel_create_renderbuffer(rgbFormat,
 528                                                            screen->ttm ? screen->front.tiled : INTEL_TILE_NONE);
 529          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 530                                 &intel_fb->color_rb[0]->Base);
 531       }
 532
 533       if (mesaVis->doubleBufferMode) {
 534          intel_fb->color_rb[1] = intel_create_renderbuffer(rgbFormat,
 535                                                            screen->ttm ? screen->back.tiled : INTEL_TILE_NONE);
 536          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 537                                 &intel_fb->color_rb[1]->Base);
 538
 539          if (screen->third.handle) {
 540             struct gl_renderbuffer *tmp_rb = NULL;
 541
 542             intel_fb->color_rb[2] = intel_create_renderbuffer(rgbFormat,
 543                                                               screen->ttm ? screen->third.tiled : INTEL_TILE_NONE);
 544             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 545          }
 546       }
 547
 548       if (mesaVis->depthBits == 24) {
 549          if (mesaVis->stencilBits == 8) {
 550             /* combined depth/stencil buffer */
 551             struct intel_renderbuffer *depthStencilRb
 552                = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT,
 553                                            screen->ttm ? screen->depth.tiled : INTEL_TILE_NONE);
 554             /* note: bind RB to two attachment points */
 555             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 556                                    &depthStencilRb->Base);
 557             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 558                                    &depthStencilRb->Base);
 559          } else {
 560             struct intel_renderbuffer *depthRb
 561                = intel_create_renderbuffer(GL_DEPTH_COMPONENT24,
 562                                            screen->ttm ? screen->depth.tiled : INTEL_TILE_NONE);
 563             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 564                                    &depthRb->Base);
 565          }
 566       }
 567       else if (mesaVis->depthBits == 16) {
 568          /* just 16-bit depth buffer, no hw stencil */
 569          struct intel_renderbuffer *depthRb
 570             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16,
 571                                         screen->ttm ? screen->depth.tiled : INTEL_TILE_NONE);
 572          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 573       }
 574
 575       /* now add any/all software-based renderbuffers we may need */
 576       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 577                                    GL_FALSE, /* never sw color */
 578                                    GL_FALSE, /* never sw depth */
 579                                    swStencil, mesaVis->accumRedBits > 0,
 580                                    GL_FALSE, /* never sw alpha */
 581                                    GL_FALSE  /* never sw aux */ );
 582       driDrawPriv->driverPrivate = (void *) intel_fb;
 583
 584       return GL_TRUE;
 585    }
 586 }
 587
 588 static void
 589 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 590 {
 591    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 592 }
 593
 594
 595 /**
 596  * Get information about previous buffer swaps.
 597  */
 598 static int
 599 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 600 {
 601    struct intel_framebuffer *intel_fb;
 602
 603    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 604        || (sInfo == NULL)) {
 605       return -1;
 606    }
 607
 608    intel_fb = dPriv->driverPrivate;
 609    sInfo->swap_count = intel_fb->swap_count;
 610    sInfo->swap_ust = intel_fb->swap_ust;
 611    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 612
 613    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 614       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 615       : 0.0;
 616
 617    return 0;
 618 }
 619
 620
 621 /* There are probably better ways to do this, such as an
 622  * init-designated function to register chipids and createcontext
 623  * functions.
 624  */
 625 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 626                                    __DRIcontextPrivate * driContextPriv,
 627                                    void *sharedContextPrivate);
 628
 629 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 630                                    __DRIcontextPrivate * driContextPriv,
 631                                    void *sharedContextPrivate);
 632 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 633                                   __DRIcontextPrivate * driContextPriv,
 634                                   void *sharedContextPrivate);
 635
 636 static GLboolean
 637 intelCreateContext(const __GLcontextModes * mesaVis,
 638                    __DRIcontextPrivate * driContextPriv,
 639                    void *sharedContextPrivate)
 640 {
 641    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 642    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 643
 644 #ifdef I915
 645    if (IS_9XX(intelScreen->deviceID)) {
 646       if (!IS_965(intelScreen->deviceID)) {
 647          return i915CreateContext(mesaVis, driContextPriv,
 648                                   sharedContextPrivate);
 649       }
 650    } else {
 651       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 652    }
 653 #else
 654    if (IS_965(intelScreen->deviceID))
 655       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 656 #endif
 657    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 658    return GL_FALSE;
 659 }
 660
 661
 662 static __DRIconfig **
 663 intelFillInModes(__DRIscreenPrivate *psp,
 664                  unsigned pixel_bits, unsigned depth_bits,
 665                  unsigned stencil_bits, GLboolean have_back_buffer)
 666 {
 667    __DRIconfig **configs;
 668    __GLcontextModes *m;
 669    unsigned depth_buffer_factor;
 670    unsigned back_buffer_factor;
 671    GLenum fb_format;
 672    GLenum fb_type;
 673    int i;
 674
 675    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 676     * support pageflipping at all.
 677     */
 678    static const GLenum back_buffer_modes[] = {
 679       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 680    };
 681
 682    u_int8_t depth_bits_array[3];
 683    u_int8_t stencil_bits_array[3];
 684
 685    depth_bits_array[0] = 0;
 686    depth_bits_array[1] = depth_bits;
 687    depth_bits_array[2] = depth_bits;
 688
 689    /* Just like with the accumulation buffer, always provide some modes
 690     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 691     * care about that.
 692     */
 693    stencil_bits_array[0] = 0;
 694    stencil_bits_array[1] = 0;
 695    if (depth_bits == 24)
 696       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 697
 698    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 699
 700    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 701    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 702
 703    if (pixel_bits == 16) {
 704       fb_format = GL_RGB;
 705       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 706    }
 707    else {
 708       fb_format = GL_BGRA;
 709       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 710    }
 711
 712    configs = driCreateConfigs(fb_format, fb_type,
 713                               depth_bits_array, stencil_bits_array,
 714                               depth_buffer_factor, back_buffer_modes,
 715                               back_buffer_factor);
 716    if (configs == NULL) {
 717     fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 718               __LINE__);
 719       return NULL;
 720    }
 721
 722    /* Mark the visual as slow if there are "fake" stencil bits.
 723     */
 724    for (i = 0; configs[i]; i++) {
 725       m = &configs[i]->modes;
 726       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 727          m->visualRating = GLX_SLOW_CONFIG;
 728       }
 729    }
 730
 731    return configs;
 732 }
 733
 734
 735 /**
 736  * This is the driver specific part of the createNewScreen entry point.
 737  *
 738  * \todo maybe fold this into intelInitDriver
 739  *
 740  * \return the __GLcontextModes supported by this driver
 741  */
 742 static const __DRIconfig **intelInitScreen(__DRIscreenPrivate *psp)
 743 {
 744 #ifdef I915
 745    static const __DRIversion ddx_expected = { 1, 5, 0 };
 746 #else
 747    static const __DRIversion ddx_expected = { 1, 6, 0 };
 748 #endif
 749    static const __DRIversion dri_expected = { 4, 0, 0 };
 750    static const __DRIversion drm_expected = { 1, 5, 0 };
 751    I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 752
 753    if (!driCheckDriDdxDrmVersions2("i915",
 754                                    &psp->dri_version, &dri_expected,
 755                                    &psp->ddx_version, &ddx_expected,
 756                                    &psp->drm_version, &drm_expected)) {
 757       return NULL;
 758    }
 759
 760    /* Calling driInitExtensions here, with a NULL context pointer,
 761     * does not actually enable the extensions.  It just makes sure
 762     * that all the dispatch offsets for all the extensions that
 763     * *might* be enables are known.  This is needed because the
 764     * dispatch offsets need to be known when _mesa_context_create is
 765     * called, but we can't enable the extensions until we have a
 766     * context pointer.
 767     *
 768     * Hello chicken.  Hello egg.  How are you two today?
 769     */
 770    intelInitExtensions(NULL, GL_TRUE);
 771
 772    if (!intelInitDriver(psp))
 773        return NULL;
 774
 775    psp->extensions = intelScreenExtensions;
 776
 777    return (const __DRIconfig **)
 778        intelFillInModes(psp, dri_priv->cpp * 8,
 779                         (dri_priv->cpp == 2) ? 16 : 24,
 780                         (dri_priv->cpp == 2) ? 0  : 8, 1);
 781 }
 782
 783 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 784 {
 785   /*
 786    * This should probably change to have the screen allocate a dummy
 787    * context at screen creation. For now just use the current context.
 788    */
 789
 790   GET_CURRENT_CONTEXT(ctx);
 791   if (ctx == NULL) {
 792      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 793      return NULL;
 794   }
 795   return intel_context(ctx);
 796 }
 797
 798 /**
 799  * This is the driver specific part of the createNewScreen entry point.
 800  *
 801  * \return the __GLcontextModes supported by this driver
 802  */
 803 static const
 804 __DRIconfig **intelInitScreen2(__DRIscreenPrivate *psp)
 805 {
 806    intelScreenPrivate *intelScreen;
 807
 808    /* Calling driInitExtensions here, with a NULL context pointer,
 809     * does not actually enable the extensions.  It just makes sure
 810     * that all the dispatch offsets for all the extensions that
 811     * *might* be enables are known.  This is needed because the
 812     * dispatch offsets need to be known when _mesa_context_create is
 813     * called, but we can't enable the extensions until we have a
 814     * context pointer.
 815     *
 816     * Hello chicken.  Hello egg.  How are you two today?
 817     */
 818    intelInitExtensions(NULL, GL_TRUE);
 819
 820    /* Allocate the private area */
 821    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 822    if (!intelScreen) {
 823       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 824       return GL_FALSE;
 825    }
 826    /* parse information in __driConfigOptions */
 827    driParseOptionInfo(&intelScreen->optionCache,
 828                       __driConfigOptions, __driNConfigOptions);
 829
 830    intelScreen->driScrnPriv = psp;
 831    psp->private = (void *) intelScreen;
 832
 833    intelScreen->drmMinor = psp->drm_version.minor;
 834
 835    /* Determine chipset ID? */
 836    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 837                         &intelScreen->deviceID))
 838       return GL_FALSE;
 839
 840    /* Determine if IRQs are active? */
 841    if (!intel_get_param(psp, I915_PARAM_IRQ_ACTIVE,
 842                         &intelScreen->irq_active))
 843       return GL_FALSE;
 844
 845    /* Determine if batchbuffers are allowed */
 846    if (!intel_get_param(psp, I915_PARAM_ALLOW_BATCHBUFFER,
 847                         &intelScreen->allow_batchbuffer))
 848       return GL_FALSE;
 849
 850    if (!intelScreen->allow_batchbuffer) {
 851       fprintf(stderr, "batch buffer not allowed\n");
 852       return GL_FALSE;
 853    }
 854
 855    psp->extensions = intelScreenExtensions;
 856
 857    return driConcatConfigs(intelFillInModes(psp, 16, 16, 0, 1),
 858                            intelFillInModes(psp, 32, 24, 8, 1));
 859 }
 860
 861 const struct __DriverAPIRec driDriverAPI = {
 862    .InitScreen           = intelInitScreen,
 863    .DestroyScreen        = intelDestroyScreen,
 864    .CreateContext        = intelCreateContext,
 865    .DestroyContext       = intelDestroyContext,
 866    .CreateBuffer         = intelCreateBuffer,
 867    .DestroyBuffer        = intelDestroyBuffer,
 868    .SwapBuffers          = intelSwapBuffers,
 869    .MakeCurrent          = intelMakeCurrent,
 870    .UnbindContext        = intelUnbindContext,
 871    .GetSwapInfo          = intelGetSwapInfo,
 872    .GetDrawableMSC       = driDrawableGetMSC32,
 873    .WaitForMSC           = driWaitForMSC32,
 874    .CopySubBuffer        = intelCopySubBuffer,
 875
 876    .InitScreen2          = intelInitScreen2,
 877    .HandleDrawableConfig = intelHandleDrawableConfig,
 878    .HandleBufferAttach   = intelHandleBufferAttach,
 879 };