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_ttm.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_ALWAYS_SYNC)
  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\n",
 225            sarea->front_offset, sarea->front_size,
 226            (unsigned) sarea->front_handle);
 227    fprintf(stderr,
 228            "SAREA: back  offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 229            sarea->back_offset, sarea->back_size,
 230            (unsigned) sarea->back_handle);
 231    fprintf(stderr, "SAREA: depth offset: 0x%08x  size: 0x%x  handle: 0x%x\n",
 232            sarea->depth_offset, sarea->depth_size,
 233            (unsigned) sarea->depth_handle);
 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
 295 /**
 296  * DRI2 entrypoint
 297  */
 298 static void
 299 intelHandleDrawableConfig(__DRIdrawablePrivate *dPriv,
 300                           __DRIcontextPrivate *pcp,
 301                           __DRIDrawableConfigEvent *event)
 302 {
 303    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 304    struct intel_region *region = NULL;
 305    struct intel_renderbuffer *rb, *depth_rb, *stencil_rb;
 306    struct intel_context *intel = pcp->driverPrivate;
 307    int cpp, pitch;
 308
 309    cpp = intel->ctx.Visual.rgbBits / 8;
 310    pitch = ((cpp * dPriv->w + 63) & ~63) / cpp;
 311
 312    rb = intel_fb->color_rb[1];
 313    if (rb) {
 314       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 315       intel_renderbuffer_set_region(rb, region);
 316    }
 317
 318    rb = intel_fb->color_rb[2];
 319    if (rb) {
 320       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 321       intel_renderbuffer_set_region(rb, region);
 322    }
 323
 324    depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 325    stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 326    if (depth_rb || stencil_rb)
 327       region = intel_region_alloc(intel, cpp, pitch, dPriv->h);
 328    if (depth_rb)
 329       intel_renderbuffer_set_region(depth_rb, region);
 330    if (stencil_rb)
 331       intel_renderbuffer_set_region(stencil_rb, region);
 332
 333    /* FIXME: Tell the X server about the regions we just allocated and
 334     * attached. */
 335 }
 336
 337 #define BUFFER_FLAG_TILED 0x0100
 338
 339 /**
 340  * DRI2 entrypoint
 341  */
 342 static void
 343 intelHandleBufferAttach(__DRIdrawablePrivate *dPriv,
 344                         __DRIcontextPrivate *pcp,
 345                         __DRIBufferAttachEvent *ba)
 346 {
 347    struct intel_framebuffer *intel_fb = dPriv->driverPrivate;
 348    struct intel_renderbuffer *rb;
 349    struct intel_region *region;
 350    struct intel_context *intel = pcp->driverPrivate;
 351    GLuint tiled;
 352
 353    switch (ba->buffer.attachment) {
 354    case DRI_DRAWABLE_BUFFER_FRONT_LEFT:
 355       rb = intel_fb->color_rb[0];
 356       break;
 357
 358    case DRI_DRAWABLE_BUFFER_BACK_LEFT:
 359       rb = intel_fb->color_rb[0];
 360       break;
 361
 362    case DRI_DRAWABLE_BUFFER_DEPTH:
 363      rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 364      break;
 365
 366    case DRI_DRAWABLE_BUFFER_STENCIL:
 367      rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 368      break;
 369
 370    case DRI_DRAWABLE_BUFFER_ACCUM:
 371    default:
 372       fprintf(stderr, "unhandled buffer attach event, attacment type %d\n",
 373               ba->buffer.attachment);
 374       return;
 375    }
 376
 377 #if 0
 378    /* FIXME: Add this so we can filter out when the X server sends us
 379     * attachment events for the buffers we just allocated.  Need to
 380     * get the BO handle for a render buffer. */
 381    if (intel_renderbuffer_get_region_handle(rb) == ba->buffer.handle)
 382       return;
 383 #endif
 384
 385    tiled = (ba->buffer.flags & BUFFER_FLAG_TILED) > 0;
 386    region = intel_region_alloc_for_handle(intel, ba->buffer.cpp,
 387                                           ba->buffer.pitch / ba->buffer.cpp,
 388                                           dPriv->h, tiled,
 389                                           ba->buffer.handle);
 390
 391    intel_renderbuffer_set_region(rb, region);
 392 }
 393
 394 static const __DRItexOffsetExtension intelTexOffsetExtension = {
 395    { __DRI_TEX_OFFSET },
 396    intelSetTexOffset,
 397 };
 398
 399 static const __DRItexBufferExtension intelTexBufferExtension = {
 400     { __DRI_TEX_BUFFER, __DRI_TEX_BUFFER_VERSION },
 401    intelSetTexBuffer,
 402 };
 403
 404 static const __DRIextension *intelScreenExtensions[] = {
 405     &driReadDrawableExtension,
 406     &driCopySubBufferExtension.base,
 407     &driSwapControlExtension.base,
 408     &driFrameTrackingExtension.base,
 409     &driMediaStreamCounterExtension.base,
 410     &intelTexOffsetExtension.base,
 411     &intelTexBufferExtension.base,
 412     NULL
 413 };
 414
 415 static GLboolean
 416 intel_get_param(__DRIscreenPrivate *psp, int param, int *value)
 417 {
 418    int ret;
 419    struct drm_i915_getparam gp;
 420
 421    gp.param = param;
 422    gp.value = value;
 423
 424    ret = drmCommandWriteRead(psp->fd, DRM_I915_GETPARAM, &gp, sizeof(gp));
 425    if (ret) {
 426       fprintf(stderr, "drm_i915_getparam: %d\n", ret);
 427       return GL_FALSE;
 428    }
 429
 430    return GL_TRUE;
 431 }
 432
 433 static GLboolean intelInitDriver(__DRIscreenPrivate *sPriv)
 434 {
 435    intelScreenPrivate *intelScreen;
 436    I830DRIPtr gDRIPriv = (I830DRIPtr) sPriv->pDevPriv;
 437    struct drm_i915_sarea *sarea;
 438
 439    if (sPriv->devPrivSize != sizeof(I830DRIRec)) {
 440       fprintf(stderr,
 441               "\nERROR!  sizeof(I830DRIRec) does not match passed size from device driver\n");
 442       return GL_FALSE;
 443    }
 444
 445    /* Allocate the private area */
 446    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 447    if (!intelScreen) {
 448       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 449       return GL_FALSE;
 450    }
 451    /* parse information in __driConfigOptions */
 452    driParseOptionInfo(&intelScreen->optionCache,
 453                       __driConfigOptions, __driNConfigOptions);
 454
 455    intelScreen->driScrnPriv = sPriv;
 456    sPriv->private = (void *) intelScreen;
 457    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 458    sarea = (struct drm_i915_sarea *)
 459       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 460
 461    intelScreen->deviceID = gDRIPriv->deviceID;
 462
 463    intelUpdateScreenFromSAREA(intelScreen, sarea);
 464
 465    if (!intelMapScreenRegions(sPriv)) {
 466       fprintf(stderr, "\nERROR!  mapping regions\n");
 467       _mesa_free(intelScreen);
 468       sPriv->private = NULL;
 469       return GL_FALSE;
 470    }
 471
 472    intelScreen->sarea_priv_offset = gDRIPriv->sarea_priv_offset;
 473
 474    if (0)
 475       intelPrintDRIInfo(intelScreen, sPriv, gDRIPriv);
 476
 477    intelScreen->drmMinor = sPriv->drm_version.minor;
 478
 479    /* Determine if IRQs are active? */
 480    if (!intel_get_param(sPriv, I915_PARAM_IRQ_ACTIVE,
 481                         &intelScreen->irq_active))
 482       return GL_FALSE;
 483
 484    /* Determine if batchbuffers are allowed */
 485    if (!intel_get_param(sPriv, I915_PARAM_ALLOW_BATCHBUFFER,
 486                         &intelScreen->allow_batchbuffer))
 487       return GL_FALSE;
 488
 489    sPriv->extensions = intelScreenExtensions;
 490
 491    return GL_TRUE;
 492 }
 493
 494
 495 static void
 496 intelDestroyScreen(__DRIscreenPrivate * sPriv)
 497 {
 498    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 499
 500    intelUnmapScreenRegions(intelScreen);
 501
 502    FREE(intelScreen);
 503    sPriv->private = NULL;
 504 }
 505
 506
 507 /**
 508  * This is called when we need to set up GL rendering to a new X window.
 509  */
 510 static GLboolean
 511 intelCreateBuffer(__DRIscreenPrivate * driScrnPriv,
 512                   __DRIdrawablePrivate * driDrawPriv,
 513                   const __GLcontextModes * mesaVis, GLboolean isPixmap)
 514 {
 515    intelScreenPrivate *screen = (intelScreenPrivate *) driScrnPriv->private;
 516
 517    if (isPixmap) {
 518       return GL_FALSE;          /* not implemented */
 519    }
 520    else {
 521       GLboolean swStencil = (mesaVis->stencilBits > 0 &&
 522                              mesaVis->depthBits != 24);
 523       GLenum rgbFormat = (mesaVis->redBits == 5 ? GL_RGB5 : GL_RGBA8);
 524
 525       struct intel_framebuffer *intel_fb = CALLOC_STRUCT(intel_framebuffer);
 526
 527       if (!intel_fb)
 528          return GL_FALSE;
 529
 530       _mesa_initialize_framebuffer(&intel_fb->Base, mesaVis);
 531
 532       /* setup the hardware-based renderbuffers */
 533       {
 534          intel_fb->color_rb[0] = intel_create_renderbuffer(rgbFormat);
 535          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_FRONT_LEFT,
 536                                 &intel_fb->color_rb[0]->Base);
 537       }
 538
 539       if (mesaVis->doubleBufferMode) {
 540          intel_fb->color_rb[1] = intel_create_renderbuffer(rgbFormat);
 541          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_BACK_LEFT,
 542                                 &intel_fb->color_rb[1]->Base);
 543
 544          if (screen->third.handle) {
 545             struct gl_renderbuffer *tmp_rb = NULL;
 546
 547             intel_fb->color_rb[2] = intel_create_renderbuffer(rgbFormat);
 548             _mesa_reference_renderbuffer(&tmp_rb, &intel_fb->color_rb[2]->Base);
 549          }
 550       }
 551
 552       if (mesaVis->depthBits == 24) {
 553          if (mesaVis->stencilBits == 8) {
 554             /* combined depth/stencil buffer */
 555             struct intel_renderbuffer *depthStencilRb
 556                = intel_create_renderbuffer(GL_DEPTH24_STENCIL8_EXT);
 557             /* note: bind RB to two attachment points */
 558             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 559                                    &depthStencilRb->Base);
 560             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_STENCIL,
 561                                    &depthStencilRb->Base);
 562          } else {
 563             struct intel_renderbuffer *depthRb
 564                = intel_create_renderbuffer(GL_DEPTH_COMPONENT24);
 565             _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH,
 566                                    &depthRb->Base);
 567          }
 568       }
 569       else if (mesaVis->depthBits == 16) {
 570          /* just 16-bit depth buffer, no hw stencil */
 571          struct intel_renderbuffer *depthRb
 572             = intel_create_renderbuffer(GL_DEPTH_COMPONENT16);
 573          _mesa_add_renderbuffer(&intel_fb->Base, BUFFER_DEPTH, &depthRb->Base);
 574       }
 575
 576       /* now add any/all software-based renderbuffers we may need */
 577       _mesa_add_soft_renderbuffers(&intel_fb->Base,
 578                                    GL_FALSE, /* never sw color */
 579                                    GL_FALSE, /* never sw depth */
 580                                    swStencil, mesaVis->accumRedBits > 0,
 581                                    GL_FALSE, /* never sw alpha */
 582                                    GL_FALSE  /* never sw aux */ );
 583       driDrawPriv->driverPrivate = (void *) intel_fb;
 584
 585       return GL_TRUE;
 586    }
 587 }
 588
 589 static void
 590 intelDestroyBuffer(__DRIdrawablePrivate * driDrawPriv)
 591 {
 592    _mesa_unreference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)));
 593 }
 594
 595
 596 /**
 597  * Get information about previous buffer swaps.
 598  */
 599 static int
 600 intelGetSwapInfo(__DRIdrawablePrivate * dPriv, __DRIswapInfo * sInfo)
 601 {
 602    struct intel_framebuffer *intel_fb;
 603
 604    if ((dPriv == NULL) || (dPriv->driverPrivate == NULL)
 605        || (sInfo == NULL)) {
 606       return -1;
 607    }
 608
 609    intel_fb = dPriv->driverPrivate;
 610    sInfo->swap_count = intel_fb->swap_count;
 611    sInfo->swap_ust = intel_fb->swap_ust;
 612    sInfo->swap_missed_count = intel_fb->swap_missed_count;
 613
 614    sInfo->swap_missed_usage = (sInfo->swap_missed_count != 0)
 615       ? driCalculateSwapUsage(dPriv, 0, intel_fb->swap_missed_ust)
 616       : 0.0;
 617
 618    return 0;
 619 }
 620
 621
 622 /* There are probably better ways to do this, such as an
 623  * init-designated function to register chipids and createcontext
 624  * functions.
 625  */
 626 extern GLboolean i830CreateContext(const __GLcontextModes * mesaVis,
 627                                    __DRIcontextPrivate * driContextPriv,
 628                                    void *sharedContextPrivate);
 629
 630 extern GLboolean i915CreateContext(const __GLcontextModes * mesaVis,
 631                                    __DRIcontextPrivate * driContextPriv,
 632                                    void *sharedContextPrivate);
 633 extern GLboolean brwCreateContext(const __GLcontextModes * mesaVis,
 634                                   __DRIcontextPrivate * driContextPriv,
 635                                   void *sharedContextPrivate);
 636
 637 static GLboolean
 638 intelCreateContext(const __GLcontextModes * mesaVis,
 639                    __DRIcontextPrivate * driContextPriv,
 640                    void *sharedContextPrivate)
 641 {
 642    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 643    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 644
 645 #ifdef I915
 646    if (IS_9XX(intelScreen->deviceID)) {
 647       if (!IS_965(intelScreen->deviceID)) {
 648          return i915CreateContext(mesaVis, driContextPriv,
 649                                   sharedContextPrivate);
 650       }
 651    } else {
 652       return i830CreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 653    }
 654 #else
 655    if (IS_965(intelScreen->deviceID))
 656       return brwCreateContext(mesaVis, driContextPriv, sharedContextPrivate);
 657 #endif
 658    fprintf(stderr, "Unrecognized deviceID %x\n", intelScreen->deviceID);
 659    return GL_FALSE;
 660 }
 661
 662
 663 static __DRIconfig **
 664 intelFillInModes(__DRIscreenPrivate *psp,
 665                  unsigned pixel_bits, unsigned depth_bits,
 666                  unsigned stencil_bits, GLboolean have_back_buffer)
 667 {
 668    __DRIconfig **configs;
 669    __GLcontextModes *m;
 670    unsigned depth_buffer_factor;
 671    unsigned back_buffer_factor;
 672    GLenum fb_format;
 673    GLenum fb_type;
 674    int i;
 675
 676    /* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
 677     * support pageflipping at all.
 678     */
 679    static const GLenum back_buffer_modes[] = {
 680       GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
 681    };
 682
 683    u_int8_t depth_bits_array[3];
 684    u_int8_t stencil_bits_array[3];
 685
 686    depth_bits_array[0] = 0;
 687    depth_bits_array[1] = depth_bits;
 688    depth_bits_array[2] = depth_bits;
 689
 690    /* Just like with the accumulation buffer, always provide some modes
 691     * with a stencil buffer.  It will be a sw fallback, but some apps won't
 692     * care about that.
 693     */
 694    stencil_bits_array[0] = 0;
 695    stencil_bits_array[1] = 0;
 696    if (depth_bits == 24)
 697       stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
 698
 699    stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
 700
 701    depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
 702    back_buffer_factor = (have_back_buffer) ? 3 : 1;
 703
 704    if (pixel_bits == 16) {
 705       fb_format = GL_RGB;
 706       fb_type = GL_UNSIGNED_SHORT_5_6_5;
 707    }
 708    else {
 709       fb_format = GL_BGRA;
 710       fb_type = GL_UNSIGNED_INT_8_8_8_8_REV;
 711    }
 712
 713    configs = driCreateConfigs(fb_format, fb_type,
 714                               depth_bits_array, stencil_bits_array,
 715                               depth_buffer_factor, back_buffer_modes,
 716                               back_buffer_factor);
 717    if (configs == NULL) {
 718     fprintf(stderr, "[%s:%u] Error creating FBConfig!\n", __func__,
 719               __LINE__);
 720       return NULL;
 721    }
 722
 723    /* Mark the visual as slow if there are "fake" stencil bits.
 724     */
 725    for (i = 0; configs[i]; i++) {
 726       m = &configs[i]->modes;
 727       if ((m->stencilBits != 0) && (m->stencilBits != stencil_bits)) {
 728          m->visualRating = GLX_SLOW_CONFIG;
 729       }
 730    }
 731
 732    return configs;
 733 }
 734
 735
 736 /**
 737  * This is the driver specific part of the createNewScreen entry point.
 738  * Called when using legacy DRI.
 739  *
 740  * \todo maybe fold this into intelInitDriver
 741  *
 742  * \return the __GLcontextModes supported by this driver
 743  */
 744 static const __DRIconfig **intelInitScreen(__DRIscreenPrivate *psp)
 745 {
 746 #ifdef I915
 747    static const __DRIversion ddx_expected = { 1, 5, 0 };
 748 #else
 749    static const __DRIversion ddx_expected = { 1, 6, 0 };
 750 #endif
 751    static const __DRIversion dri_expected = { 4, 0, 0 };
 752    static const __DRIversion drm_expected = { 1, 5, 0 };
 753    I830DRIPtr dri_priv = (I830DRIPtr) psp->pDevPriv;
 754
 755    if (!driCheckDriDdxDrmVersions2("i915",
 756                                    &psp->dri_version, &dri_expected,
 757                                    &psp->ddx_version, &ddx_expected,
 758                                    &psp->drm_version, &drm_expected)) {
 759       return NULL;
 760    }
 761
 762    /* Calling driInitExtensions here, with a NULL context pointer,
 763     * does not actually enable the extensions.  It just makes sure
 764     * that all the dispatch offsets for all the extensions that
 765     * *might* be enables are known.  This is needed because the
 766     * dispatch offsets need to be known when _mesa_context_create is
 767     * called, but we can't enable the extensions until we have a
 768     * context pointer.
 769     *
 770     * Hello chicken.  Hello egg.  How are you two today?
 771     */
 772    intelInitExtensions(NULL, GL_TRUE);
 773
 774    if (!intelInitDriver(psp))
 775        return NULL;
 776
 777    psp->extensions = intelScreenExtensions;
 778
 779    return (const __DRIconfig **)
 780        intelFillInModes(psp, dri_priv->cpp * 8,
 781                         (dri_priv->cpp == 2) ? 16 : 24,
 782                         (dri_priv->cpp == 2) ? 0  : 8, 1);
 783 }
 784
 785 struct intel_context *intelScreenContext(intelScreenPrivate *intelScreen)
 786 {
 787   /*
 788    * This should probably change to have the screen allocate a dummy
 789    * context at screen creation. For now just use the current context.
 790    */
 791
 792   GET_CURRENT_CONTEXT(ctx);
 793   if (ctx == NULL) {
 794      _mesa_problem(NULL, "No current context in intelScreenContext\n");
 795      return NULL;
 796   }
 797   return intel_context(ctx);
 798 }
 799
 800 /**
 801  * This is the driver specific part of the createNewScreen entry point.
 802  * Called when using DRI2.
 803  *
 804  * \return the __GLcontextModes supported by this driver
 805  */
 806 static const
 807 __DRIconfig **intelInitScreen2(__DRIscreenPrivate *psp)
 808 {
 809    intelScreenPrivate *intelScreen;
 810
 811    /* Calling driInitExtensions here, with a NULL context pointer,
 812     * does not actually enable the extensions.  It just makes sure
 813     * that all the dispatch offsets for all the extensions that
 814     * *might* be enables are known.  This is needed because the
 815     * dispatch offsets need to be known when _mesa_context_create is
 816     * called, but we can't enable the extensions until we have a
 817     * context pointer.
 818     *
 819     * Hello chicken.  Hello egg.  How are you two today?
 820     */
 821    intelInitExtensions(NULL, GL_TRUE);
 822
 823    /* Allocate the private area */
 824    intelScreen = (intelScreenPrivate *) CALLOC(sizeof(intelScreenPrivate));
 825    if (!intelScreen) {
 826       fprintf(stderr, "\nERROR!  Allocating private area failed\n");
 827       return GL_FALSE;
 828    }
 829    /* parse information in __driConfigOptions */
 830    driParseOptionInfo(&intelScreen->optionCache,
 831                       __driConfigOptions, __driNConfigOptions);
 832
 833    intelScreen->driScrnPriv = psp;
 834    psp->private = (void *) intelScreen;
 835
 836    intelScreen->drmMinor = psp->drm_version.minor;
 837
 838    /* Determine chipset ID? */
 839    if (!intel_get_param(psp, I915_PARAM_CHIPSET_ID,
 840                         &intelScreen->deviceID))
 841       return GL_FALSE;
 842
 843    /* Determine if IRQs are active? */
 844    if (!intel_get_param(psp, I915_PARAM_IRQ_ACTIVE,
 845                         &intelScreen->irq_active))
 846       return GL_FALSE;
 847
 848    /* Determine if batchbuffers are allowed */
 849    if (!intel_get_param(psp, I915_PARAM_ALLOW_BATCHBUFFER,
 850                         &intelScreen->allow_batchbuffer))
 851       return GL_FALSE;
 852
 853    if (!intelScreen->allow_batchbuffer) {
 854       fprintf(stderr, "batch buffer not allowed\n");
 855       return GL_FALSE;
 856    }
 857
 858    psp->extensions = intelScreenExtensions;
 859
 860    return driConcatConfigs(intelFillInModes(psp, 16, 16, 0, 1),
 861                            intelFillInModes(psp, 32, 24, 8, 1));
 862 }
 863
 864 const struct __DriverAPIRec driDriverAPI = {
 865    .InitScreen           = intelInitScreen,
 866    .DestroyScreen        = intelDestroyScreen,
 867    .CreateContext        = intelCreateContext,
 868    .DestroyContext       = intelDestroyContext,
 869    .CreateBuffer         = intelCreateBuffer,
 870    .DestroyBuffer        = intelDestroyBuffer,
 871    .SwapBuffers          = intelSwapBuffers,
 872    .MakeCurrent          = intelMakeCurrent,
 873    .UnbindContext        = intelUnbindContext,
 874    .GetSwapInfo          = intelGetSwapInfo,
 875    .GetDrawableMSC       = driDrawableGetMSC32,
 876    .WaitForMSC           = driWaitForMSC32,
 877    .CopySubBuffer        = intelCopySubBuffer,
 878
 879    .InitScreen2          = intelInitScreen2,
 880    .HandleDrawableConfig = intelHandleDrawableConfig,
 881    .HandleBufferAttach   = intelHandleBufferAttach,
 882 };