src/mesa/drivers/dri/intel/intel_context.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
  29 #include "main/glheader.h"
  30 #include "main/context.h"
  31 #include "main/arrayobj.h"
  32 #include "main/extensions.h"
  33 #include "main/framebuffer.h"
  34 #include "main/imports.h"
  35 #include "main/points.h"
  36
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "drivers/common/driverfuncs.h"
  41
  42 #include "i830_dri.h"
  43
  44 #include "intel_chipset.h"
  45 #include "intel_buffers.h"
  46 #include "intel_tex.h"
  47 #include "intel_batchbuffer.h"
  48 #include "intel_clear.h"
  49 #include "intel_extensions.h"
  50 #include "intel_pixel.h"
  51 #include "intel_regions.h"
  52 #include "intel_buffer_objects.h"
  53 #include "intel_fbo.h"
  54 #include "intel_decode.h"
  55 #include "intel_bufmgr.h"
  56 #include "intel_screen.h"
  57 #include "intel_swapbuffers.h"
  58
  59 #include "drirenderbuffer.h"
  60 #include "vblank.h"
  61 #include "utils.h"
  62 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  63
  64
  65 #ifndef INTEL_DEBUG
  66 int INTEL_DEBUG = (0);
  67 #endif
  68
  69
  70 #define DRIVER_DATE                     "20090712 2009Q2 RC3"
  71 #define DRIVER_DATE_GEM                 "GEM " DRIVER_DATE
  72
  73
  74 static void intel_flush(GLcontext *ctx, GLboolean needs_mi_flush);
  75
  76 static const GLubyte *
  77 intelGetString(GLcontext * ctx, GLenum name)
  78 {
  79    const struct intel_context *const intel = intel_context(ctx);
  80    const char *chipset;
  81    static char buffer[128];
  82
  83    switch (name) {
  84    case GL_VENDOR:
  85       return (GLubyte *) "Tungsten Graphics, Inc";
  86       break;
  87
  88    case GL_RENDERER:
  89       switch (intel->intelScreen->deviceID) {
  90       case PCI_CHIP_845_G:
  91          chipset = "Intel(R) 845G";
  92          break;
  93       case PCI_CHIP_I830_M:
  94          chipset = "Intel(R) 830M";
  95          break;
  96       case PCI_CHIP_I855_GM:
  97          chipset = "Intel(R) 852GM/855GM";
  98          break;
  99       case PCI_CHIP_I865_G:
 100          chipset = "Intel(R) 865G";
 101          break;
 102       case PCI_CHIP_I915_G:
 103          chipset = "Intel(R) 915G";
 104          break;
 105       case PCI_CHIP_E7221_G:
 106          chipset = "Intel (R) E7221G (i915)";
 107          break;
 108       case PCI_CHIP_I915_GM:
 109          chipset = "Intel(R) 915GM";
 110          break;
 111       case PCI_CHIP_I945_G:
 112          chipset = "Intel(R) 945G";
 113          break;
 114       case PCI_CHIP_I945_GM:
 115          chipset = "Intel(R) 945GM";
 116          break;
 117       case PCI_CHIP_I945_GME:
 118          chipset = "Intel(R) 945GME";
 119          break;
 120       case PCI_CHIP_G33_G:
 121          chipset = "Intel(R) G33";
 122          break;
 123       case PCI_CHIP_Q35_G:
 124          chipset = "Intel(R) Q35";
 125          break;
 126       case PCI_CHIP_Q33_G:
 127          chipset = "Intel(R) Q33";
 128          break;
 129       case PCI_CHIP_IGD_GM:
 130       case PCI_CHIP_IGD_G:
 131          chipset = "Intel(R) IGD";
 132          break;
 133       case PCI_CHIP_I965_Q:
 134          chipset = "Intel(R) 965Q";
 135          break;
 136       case PCI_CHIP_I965_G:
 137       case PCI_CHIP_I965_G_1:
 138          chipset = "Intel(R) 965G";
 139          break;
 140       case PCI_CHIP_I946_GZ:
 141          chipset = "Intel(R) 946GZ";
 142          break;
 143       case PCI_CHIP_I965_GM:
 144          chipset = "Intel(R) 965GM";
 145          break;
 146       case PCI_CHIP_I965_GME:
 147          chipset = "Intel(R) 965GME/GLE";
 148          break;
 149       case PCI_CHIP_GM45_GM:
 150          chipset = "Mobile Intel® GM45 Express Chipset";
 151          break;
 152       case PCI_CHIP_IGD_E_G:
 153          chipset = "Intel(R) Integrated Graphics Device";
 154          break;
 155       case PCI_CHIP_G45_G:
 156          chipset = "Intel(R) G45/G43";
 157          break;
 158       case PCI_CHIP_Q45_G:
 159          chipset = "Intel(R) Q45/Q43";
 160          break;
 161       case PCI_CHIP_G41_G:
 162          chipset = "Intel(R) G41";
 163          break;
 164       case PCI_CHIP_B43_G:
 165          chipset = "Intel(R) B43";
 166          break;
 167       default:
 168          chipset = "Unknown Intel Chipset";
 169          break;
 170       }
 171
 172       (void) driGetRendererString(buffer, chipset,
 173                                   (intel->ttm) ? DRIVER_DATE_GEM : DRIVER_DATE,
 174                                   0);
 175       return (GLubyte *) buffer;
 176
 177    default:
 178       return NULL;
 179    }
 180 }
 181
 182 static unsigned
 183 intel_bits_per_pixel(const struct intel_renderbuffer *rb)
 184 {
 185    switch (rb->Base._ActualFormat) {
 186    case GL_RGB5:
 187    case GL_DEPTH_COMPONENT16:
 188       return 16;
 189    case GL_RGB8:
 190    case GL_RGBA8:
 191    case GL_DEPTH_COMPONENT24:
 192    case GL_DEPTH24_STENCIL8_EXT:
 193    case GL_STENCIL_INDEX8_EXT:
 194       return 32;
 195    default:
 196       return 0;
 197    }
 198 }
 199
 200 void
 201 intel_update_renderbuffers(__DRIcontext *context, __DRIdrawable *drawable)
 202 {
 203    struct intel_framebuffer *intel_fb = drawable->driverPrivate;
 204    struct intel_renderbuffer *rb;
 205    struct intel_region *region, *depth_region;
 206    struct intel_context *intel = context->driverPrivate;
 207    __DRIbuffer *buffers = NULL;
 208    __DRIscreen *screen;
 209    int i, count;
 210    unsigned int attachments[10];
 211    uint32_t name;
 212    const char *region_name;
 213
 214    if (INTEL_DEBUG & DEBUG_DRI)
 215       fprintf(stderr, "enter %s, drawable %p\n", __func__, drawable);
 216
 217    screen = intel->intelScreen->driScrnPriv;
 218
 219    if (screen->dri2.loader
 220        && (screen->dri2.loader->base.version > 2)
 221        && (screen->dri2.loader->getBuffersWithFormat != NULL)) {
 222       struct intel_renderbuffer *depth_rb;
 223       struct intel_renderbuffer *stencil_rb;
 224
 225       i = 0;
 226       if ((intel->is_front_buffer_rendering ||
 227            intel->is_front_buffer_reading ||
 228            !intel_fb->color_rb[1])
 229            && intel_fb->color_rb[0]) {
 230          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 231          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[0]);
 232       }
 233
 234       if (intel_fb->color_rb[1]) {
 235          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 236          attachments[i++] = intel_bits_per_pixel(intel_fb->color_rb[1]);
 237       }
 238
 239       depth_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 240       stencil_rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 241
 242       if ((depth_rb != NULL) && (stencil_rb != NULL)) {
 243          attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
 244          attachments[i++] = intel_bits_per_pixel(depth_rb);
 245       } else if (depth_rb != NULL) {
 246          attachments[i++] = __DRI_BUFFER_DEPTH;
 247          attachments[i++] = intel_bits_per_pixel(depth_rb);
 248       } else if (stencil_rb != NULL) {
 249          attachments[i++] = __DRI_BUFFER_STENCIL;
 250          attachments[i++] = intel_bits_per_pixel(stencil_rb);
 251       }
 252
 253       buffers =
 254          (*screen->dri2.loader->getBuffersWithFormat)(drawable,
 255                                                       &drawable->w,
 256                                                       &drawable->h,
 257                                                       attachments, i / 2,
 258                                                       &count,
 259                                                       drawable->loaderPrivate);
 260    } else if (screen->dri2.loader) {
 261       i = 0;
 262       if (intel_fb->color_rb[0])
 263          attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
 264       if (intel_fb->color_rb[1])
 265          attachments[i++] = __DRI_BUFFER_BACK_LEFT;
 266       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH))
 267          attachments[i++] = __DRI_BUFFER_DEPTH;
 268       if (intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL))
 269          attachments[i++] = __DRI_BUFFER_STENCIL;
 270
 271       buffers = (*screen->dri2.loader->getBuffers)(drawable,
 272                                                    &drawable->w,
 273                                                    &drawable->h,
 274                                                    attachments, i,
 275                                                    &count,
 276                                                    drawable->loaderPrivate);
 277    }
 278
 279    if (buffers == NULL)
 280       return;
 281
 282    drawable->x = 0;
 283    drawable->y = 0;
 284    drawable->backX = 0;
 285    drawable->backY = 0;
 286    drawable->numClipRects = 1;
 287    drawable->pClipRects[0].x1 = 0;
 288    drawable->pClipRects[0].y1 = 0;
 289    drawable->pClipRects[0].x2 = drawable->w;
 290    drawable->pClipRects[0].y2 = drawable->h;
 291    drawable->numBackClipRects = 1;
 292    drawable->pBackClipRects[0].x1 = 0;
 293    drawable->pBackClipRects[0].y1 = 0;
 294    drawable->pBackClipRects[0].x2 = drawable->w;
 295    drawable->pBackClipRects[0].y2 = drawable->h;
 296
 297    depth_region = NULL;
 298    for (i = 0; i < count; i++) {
 299        switch (buffers[i].attachment) {
 300        case __DRI_BUFFER_FRONT_LEFT:
 301            rb = intel_fb->color_rb[0];
 302            region_name = "dri2 front buffer";
 303            break;
 304
 305        case __DRI_BUFFER_FAKE_FRONT_LEFT:
 306            rb = intel_fb->color_rb[0];
 307            region_name = "dri2 fake front buffer";
 308            break;
 309
 310        case __DRI_BUFFER_BACK_LEFT:
 311            rb = intel_fb->color_rb[1];
 312            region_name = "dri2 back buffer";
 313            break;
 314
 315        case __DRI_BUFFER_DEPTH:
 316            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 317            region_name = "dri2 depth buffer";
 318            break;
 319
 320        case __DRI_BUFFER_DEPTH_STENCIL:
 321            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 322            region_name = "dri2 depth / stencil buffer";
 323            break;
 324
 325        case __DRI_BUFFER_STENCIL:
 326            rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 327            region_name = "dri2 stencil buffer";
 328            break;
 329
 330        case __DRI_BUFFER_ACCUM:
 331        default:
 332            fprintf(stderr,
 333                    "unhandled buffer attach event, attacment type %d\n",
 334                    buffers[i].attachment);
 335            return;
 336        }
 337
 338        if (rb == NULL)
 339           continue;
 340
 341        if (rb->region) {
 342           dri_bo_flink(rb->region->buffer, &name);
 343           if (name == buffers[i].name)
 344              continue;
 345        }
 346
 347        if (INTEL_DEBUG & DEBUG_DRI)
 348           fprintf(stderr,
 349                   "attaching buffer %d, at %d, cpp %d, pitch %d\n",
 350                   buffers[i].name, buffers[i].attachment,
 351                   buffers[i].cpp, buffers[i].pitch);
 352
 353        if (buffers[i].attachment == __DRI_BUFFER_STENCIL && depth_region) {
 354           if (INTEL_DEBUG & DEBUG_DRI)
 355              fprintf(stderr, "(reusing depth buffer as stencil)\n");
 356           intel_region_reference(&region, depth_region);
 357        }
 358        else
 359           region = intel_region_alloc_for_handle(intel, buffers[i].cpp,
 360                                                  drawable->w,
 361                                                  drawable->h,
 362                                                  buffers[i].pitch / buffers[i].cpp,
 363                                                  buffers[i].name,
 364                                                  region_name);
 365
 366        if (buffers[i].attachment == __DRI_BUFFER_DEPTH)
 367           depth_region = region;
 368
 369        intel_renderbuffer_set_region(rb, region);
 370        intel_region_release(&region);
 371
 372        if (buffers[i].attachment == __DRI_BUFFER_DEPTH_STENCIL) {
 373           rb = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 374           if (rb != NULL) {
 375              struct intel_region *stencil_region = NULL;
 376
 377              if (rb->region) {
 378                 dri_bo_flink(rb->region->buffer, &name);
 379                 if (name == buffers[i].name)
 380                    continue;
 381              }
 382
 383              intel_region_reference(&stencil_region, region);
 384              intel_renderbuffer_set_region(rb, stencil_region);
 385              intel_region_release(&stencil_region);
 386           }
 387        }
 388    }
 389
 390    driUpdateFramebufferSize(&intel->ctx, drawable);
 391 }
 392
 393 void
 394 intel_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
 395 {
 396     struct intel_context *intel = intel_context(ctx);
 397     __DRIcontext *driContext = intel->driContext;
 398     void (*old_viewport)(GLcontext *ctx, GLint x, GLint y,
 399                          GLsizei w, GLsizei h);
 400
 401     if (!driContext->driScreenPriv->dri2.enabled)
 402         return;
 403
 404     if (!intel->internal_viewport_call && ctx->DrawBuffer->Name == 0) {
 405        /* If we're rendering to the fake front buffer, make sure all the pending
 406         * drawing has landed on the real front buffer.  Otherwise when we
 407         * eventually get to DRI2GetBuffersWithFormat the stale real front
 408         * buffer contents will get copied to the new fake front buffer.
 409         */
 410        if (intel->is_front_buffer_rendering) {
 411           intel_flush(ctx, GL_FALSE);
 412        }
 413
 414        intel_update_renderbuffers(driContext, driContext->driDrawablePriv);
 415        if (driContext->driDrawablePriv != driContext->driReadablePriv)
 416           intel_update_renderbuffers(driContext, driContext->driReadablePriv);
 417     }
 418
 419     old_viewport = ctx->Driver.Viewport;
 420     ctx->Driver.Viewport = NULL;
 421     intel->driDrawable = driContext->driDrawablePriv;
 422     intelWindowMoved(intel);
 423     intel_draw_buffer(ctx, intel->ctx.DrawBuffer);
 424     ctx->Driver.Viewport = old_viewport;
 425 }
 426
 427
 428 static const struct dri_debug_control debug_control[] = {
 429    { "tex",   DEBUG_TEXTURE},
 430    { "state", DEBUG_STATE},
 431    { "ioctl", DEBUG_IOCTL},
 432    { "blit",  DEBUG_BLIT},
 433    { "mip",   DEBUG_MIPTREE},
 434    { "fall",  DEBUG_FALLBACKS},
 435    { "verb",  DEBUG_VERBOSE},
 436    { "bat",   DEBUG_BATCH},
 437    { "pix",   DEBUG_PIXEL},
 438    { "buf",   DEBUG_BUFMGR},
 439    { "reg",   DEBUG_REGION},
 440    { "fbo",   DEBUG_FBO},
 441    { "lock",  DEBUG_LOCK},
 442    { "sync",  DEBUG_SYNC},
 443    { "prim",  DEBUG_PRIMS },
 444    { "vert",  DEBUG_VERTS },
 445    { "dri",   DEBUG_DRI },
 446    { "dma",   DEBUG_DMA },
 447    { "san",   DEBUG_SANITY },
 448    { "sleep", DEBUG_SLEEP },
 449    { "stats", DEBUG_STATS },
 450    { "tile",  DEBUG_TILE },
 451    { "sing",  DEBUG_SINGLE_THREAD },
 452    { "thre",  DEBUG_SINGLE_THREAD },
 453    { "wm",    DEBUG_WM },
 454    { "urb",   DEBUG_URB },
 455    { "vs",    DEBUG_VS },
 456    { NULL,    0 }
 457 };
 458
 459
 460 static void
 461 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 462 {
 463     struct intel_context *intel = intel_context(ctx);
 464
 465    _swrast_InvalidateState(ctx, new_state);
 466    _swsetup_InvalidateState(ctx, new_state);
 467    _vbo_InvalidateState(ctx, new_state);
 468    _tnl_InvalidateState(ctx, new_state);
 469    _tnl_invalidate_vertex_state(ctx, new_state);
 470
 471    intel->NewGLState |= new_state;
 472
 473    if (intel->vtbl.invalidate_state)
 474       intel->vtbl.invalidate_state( intel, new_state );
 475 }
 476
 477 static void
 478 intel_flush(GLcontext *ctx, GLboolean needs_mi_flush)
 479 {
 480    struct intel_context *intel = intel_context(ctx);
 481
 482    if (intel->Fallback)
 483       _swrast_flush(ctx);
 484
 485    if (!IS_965(intel->intelScreen->deviceID))
 486       INTEL_FIREVERTICES(intel);
 487
 488    /* Emit a flush so that any frontbuffer rendering that might have occurred
 489     * lands onscreen in a timely manner, even if the X Server doesn't trigger
 490     * a flush for us.
 491     */
 492    if (needs_mi_flush)
 493       intel_batchbuffer_emit_mi_flush(intel->batch);
 494
 495    if (intel->batch->map != intel->batch->ptr)
 496       intel_batchbuffer_flush(intel->batch);
 497
 498    if ((ctx->DrawBuffer->Name == 0) && intel->front_buffer_dirty) {
 499       __DRIscreen *const screen = intel->intelScreen->driScrnPriv;
 500
 501       if (screen->dri2.loader &&
 502           (screen->dri2.loader->base.version >= 2)
 503           && (screen->dri2.loader->flushFrontBuffer != NULL) &&
 504           intel->driDrawable && intel->driDrawable->loaderPrivate) {
 505          (*screen->dri2.loader->flushFrontBuffer)(intel->driDrawable,
 506                                                   intel->driDrawable->loaderPrivate);
 507
 508          /* Only clear the dirty bit if front-buffer rendering is no longer
 509           * enabled.  This is done so that the dirty bit can only be set in
 510           * glDrawBuffer.  Otherwise the dirty bit would have to be set at
 511           * each of N places that do rendering.  This has worse performances,
 512           * but it is much easier to get correct.
 513           */
 514          if (!intel->is_front_buffer_rendering) {
 515             intel->front_buffer_dirty = GL_FALSE;
 516          }
 517       }
 518    }
 519 }
 520
 521 void
 522 intelFlush(GLcontext * ctx)
 523 {
 524    intel_flush(ctx, GL_FALSE);
 525 }
 526
 527 static void
 528 intel_glFlush(GLcontext *ctx)
 529 {
 530    struct intel_context *intel = intel_context(ctx);
 531
 532    intel_flush(ctx, GL_TRUE);
 533
 534    /* We're using glFlush as an indicator that a frame is done, which is
 535     * what DRI2 does before calling SwapBuffers (and means we should catch
 536     * people doing front-buffer rendering, as well)..
 537     *
 538     * Wait for the swapbuffers before the one we just emitted, so we don't
 539     * get too many swaps outstanding for apps that are GPU-heavy but not
 540     * CPU-heavy.
 541     *
 542     * Unfortunately, we don't have a handle to the batch containing the swap,
 543     * and getting our hands on that doesn't seem worth it, so we just us the
 544     * first batch we emitted after the last swap.
 545     */
 546    if (intel->first_post_swapbuffers_batch != NULL) {
 547       drm_intel_bo_wait_rendering(intel->first_post_swapbuffers_batch);
 548       drm_intel_bo_unreference(intel->first_post_swapbuffers_batch);
 549       intel->first_post_swapbuffers_batch = NULL;
 550    }
 551 }
 552
 553 void
 554 intelFinish(GLcontext * ctx)
 555 {
 556    struct gl_framebuffer *fb = ctx->DrawBuffer;
 557    int i;
 558
 559    intelFlush(ctx);
 560
 561    for (i = 0; i < fb->_NumColorDrawBuffers; i++) {
 562        struct intel_renderbuffer *irb;
 563
 564        irb = intel_renderbuffer(fb->_ColorDrawBuffers[i]);
 565
 566        if (irb && irb->region)
 567           dri_bo_wait_rendering(irb->region->buffer);
 568    }
 569    if (fb->_DepthBuffer) {
 570       /* XXX: Wait on buffer idle */
 571    }
 572 }
 573
 574 void
 575 intelInitDriverFunctions(struct dd_function_table *functions)
 576 {
 577    _mesa_init_driver_functions(functions);
 578
 579    functions->Flush = intel_glFlush;
 580    functions->Finish = intelFinish;
 581    functions->GetString = intelGetString;
 582    functions->UpdateState = intelInvalidateState;
 583
 584    functions->CopyColorTable = _swrast_CopyColorTable;
 585    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 586    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 587    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 588
 589    intelInitTextureFuncs(functions);
 590    intelInitStateFuncs(functions);
 591    intelInitClearFuncs(functions);
 592    intelInitBufferFuncs(functions);
 593    intelInitPixelFuncs(functions);
 594 }
 595
 596
 597 GLboolean
 598 intelInitContext(struct intel_context *intel,
 599                  const __GLcontextModes * mesaVis,
 600                  __DRIcontextPrivate * driContextPriv,
 601                  void *sharedContextPrivate,
 602                  struct dd_function_table *functions)
 603 {
 604    GLcontext *ctx = &intel->ctx;
 605    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 606    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 607    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 608    int fthrottle_mode;
 609
 610    if (!_mesa_initialize_context(&intel->ctx, mesaVis, shareCtx,
 611                                  functions, (void *) intel)) {
 612       _mesa_printf("%s: failed to init mesa context\n", __FUNCTION__);
 613       return GL_FALSE;
 614    }
 615
 616    driContextPriv->driverPrivate = intel;
 617    intel->intelScreen = intelScreen;
 618    intel->driScreen = sPriv;
 619    intel->sarea = intelScreen->sarea;
 620    intel->driContext = driContextPriv;
 621
 622    /* Dri stuff */
 623    intel->hHWContext = driContextPriv->hHWContext;
 624    intel->driFd = sPriv->fd;
 625    intel->driHwLock = sPriv->lock;
 626
 627    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 628                        intel->driScreen->myNum,
 629                        IS_965(intelScreen->deviceID) ? "i965" : "i915");
 630    if (intelScreen->deviceID == PCI_CHIP_I865_G)
 631       intel->maxBatchSize = 4096;
 632    else
 633       intel->maxBatchSize = BATCH_SZ;
 634
 635    intel->bufmgr = intelScreen->bufmgr;
 636    intel->ttm = intelScreen->ttm;
 637    if (intel->ttm) {
 638       int bo_reuse_mode;
 639
 640       bo_reuse_mode = driQueryOptioni(&intel->optionCache, "bo_reuse");
 641       switch (bo_reuse_mode) {
 642       case DRI_CONF_BO_REUSE_DISABLED:
 643          break;
 644       case DRI_CONF_BO_REUSE_ALL:
 645          intel_bufmgr_gem_enable_reuse(intel->bufmgr);
 646          break;
 647       }
 648    }
 649
 650    /* This doesn't yet catch all non-conformant rendering, but it's a
 651     * start.
 652     */
 653    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 654       unsigned int value = atoi(getenv("INTEL_STRICT_CONFORMANCE"));
 655       if (value > 0) {
 656          intel->conformance_mode = value;
 657       }
 658       else {
 659          intel->conformance_mode = 1;
 660       }
 661    }
 662
 663    if (intel->conformance_mode > 0) {
 664       ctx->Const.MinLineWidth = 1.0;
 665       ctx->Const.MinLineWidthAA = 1.0;
 666       ctx->Const.MaxLineWidth = 1.0;
 667       ctx->Const.MaxLineWidthAA = 1.0;
 668       ctx->Const.LineWidthGranularity = 1.0;
 669    }
 670    else {
 671       ctx->Const.MinLineWidth = 1.0;
 672       ctx->Const.MinLineWidthAA = 1.0;
 673       ctx->Const.MaxLineWidth = 5.0;
 674       ctx->Const.MaxLineWidthAA = 5.0;
 675       ctx->Const.LineWidthGranularity = 0.5;
 676    }
 677
 678    ctx->Const.MinPointSize = 1.0;
 679    ctx->Const.MinPointSizeAA = 1.0;
 680    ctx->Const.MaxPointSize = 255.0;
 681    ctx->Const.MaxPointSizeAA = 3.0;
 682    ctx->Const.PointSizeGranularity = 1.0;
 683
 684    /* reinitialize the context point state.
 685     * It depend on constants in __GLcontextRec::Const
 686     */
 687    _mesa_init_point(ctx);
 688
 689    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 690
 691    /* Initialize the software rasterizer and helper modules. */
 692    _swrast_CreateContext(ctx);
 693    _vbo_CreateContext(ctx);
 694    _tnl_CreateContext(ctx);
 695    _swsetup_CreateContext(ctx);
 696
 697    /* Configure swrast to match hardware characteristics: */
 698    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 699    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 700
 701    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 702    intel->hw_stipple = 1;
 703
 704    /* XXX FBO: this doesn't seem to be used anywhere */
 705    switch (mesaVis->depthBits) {
 706    case 0:                     /* what to do in this case? */
 707    case 16:
 708       intel->polygon_offset_scale = 1.0;
 709       break;
 710    case 24:
 711       intel->polygon_offset_scale = 2.0;     /* req'd to pass glean */
 712       break;
 713    default:
 714       assert(0);
 715       break;
 716    }
 717
 718    if (IS_965(intelScreen->deviceID))
 719       intel->polygon_offset_scale /= 0xffff;
 720
 721    intel->RenderIndex = ~0;
 722
 723    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 724    intel->irqsEmitted = 0;
 725
 726    intel->do_irqs = (intel->intelScreen->irq_active &&
 727                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 728
 729    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 730
 731    if (IS_965(intelScreen->deviceID) && !intel->intelScreen->irq_active) {
 732       _mesa_printf("IRQs not active.  Exiting\n");
 733       exit(1);
 734    }
 735
 736    intelInitExtensions(ctx, GL_FALSE);
 737
 738    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 739    if (INTEL_DEBUG & DEBUG_BUFMGR)
 740       dri_bufmgr_set_debug(intel->bufmgr, GL_TRUE);
 741
 742    if (!sPriv->dri2.enabled)
 743       intel_recreate_static_regions(intel);
 744
 745    intel->batch = intel_batchbuffer_alloc(intel);
 746
 747    intel_bufferobj_init(intel);
 748    intel_fbo_init(intel);
 749
 750    if (intel->ctx.Mesa_DXTn) {
 751       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 752       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 753    }
 754    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 755       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 756    }
 757
 758    intel->prim.primitive = ~0;
 759
 760    /* Force all software fallbacks */
 761    if (driQueryOptionb(&intel->optionCache, "no_rast")) {
 762       fprintf(stderr, "disabling 3D rasterization\n");
 763       intel->no_rast = 1;
 764    }
 765
 766    if (driQueryOptionb(&intel->optionCache, "always_flush_batch")) {
 767       fprintf(stderr, "flushing batchbuffer before/after each draw call\n");
 768       intel->always_flush_batch = 1;
 769    }
 770
 771    if (driQueryOptionb(&intel->optionCache, "always_flush_cache")) {
 772       fprintf(stderr, "flushing GPU caches before/after each draw call\n");
 773       intel->always_flush_cache = 1;
 774    }
 775
 776    /* Disable all hardware rendering (skip emitting batches and fences/waits
 777     * to the kernel)
 778     */
 779    intel->no_hw = getenv("INTEL_NO_HW") != NULL;
 780
 781    return GL_TRUE;
 782 }
 783
 784 void
 785 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 786 {
 787    struct intel_context *intel =
 788       (struct intel_context *) driContextPriv->driverPrivate;
 789
 790    assert(intel);               /* should never be null */
 791    if (intel) {
 792       GLboolean release_texture_heaps;
 793
 794       INTEL_FIREVERTICES(intel);
 795
 796       if (intel->clear.arrayObj)
 797          _mesa_delete_array_object(&intel->ctx, intel->clear.arrayObj);
 798
 799       intel->vtbl.destroy(intel);
 800
 801       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 802       _swsetup_DestroyContext(&intel->ctx);
 803       _tnl_DestroyContext(&intel->ctx);
 804       _vbo_DestroyContext(&intel->ctx);
 805
 806       _swrast_DestroyContext(&intel->ctx);
 807       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 808
 809       intel_batchbuffer_free(intel->batch);
 810       intel->batch = NULL;
 811
 812       free(intel->prim.vb);
 813       intel->prim.vb = NULL;
 814       dri_bo_unreference(intel->prim.vb_bo);
 815       intel->prim.vb_bo = NULL;
 816       dri_bo_unreference(intel->first_post_swapbuffers_batch);
 817       intel->first_post_swapbuffers_batch = NULL;
 818
 819       if (release_texture_heaps) {
 820          /* This share group is about to go away, free our private
 821           * texture object data.
 822           */
 823          if (INTEL_DEBUG & DEBUG_TEXTURE)
 824             fprintf(stderr, "do something to free texture heaps\n");
 825       }
 826
 827       intel_region_release(&intel->front_region);
 828       intel_region_release(&intel->back_region);
 829       intel_region_release(&intel->depth_region);
 830
 831       driDestroyOptionCache(&intel->optionCache);
 832
 833       /* free the Mesa context */
 834       _mesa_free_context_data(&intel->ctx);
 835
 836       FREE(intel);
 837       driContextPriv->driverPrivate = NULL;
 838    }
 839 }
 840
 841 GLboolean
 842 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 843 {
 844    struct intel_context *intel =
 845       (struct intel_context *) driContextPriv->driverPrivate;
 846
 847    /* Deassociate the context with the drawables.
 848     */
 849    intel->driDrawable = NULL;
 850    intel->driReadDrawable = NULL;
 851
 852    return GL_TRUE;
 853 }
 854
 855 GLboolean
 856 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 857                  __DRIdrawablePrivate * driDrawPriv,
 858                  __DRIdrawablePrivate * driReadPriv)
 859 {
 860    __DRIscreenPrivate *psp = driDrawPriv->driScreenPriv;
 861
 862    if (driContextPriv) {
 863       struct intel_context *intel =
 864          (struct intel_context *) driContextPriv->driverPrivate;
 865       struct intel_framebuffer *intel_fb =
 866          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 867       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 868
 869       if (driContextPriv->driScreenPriv->dri2.enabled) {
 870           intel_update_renderbuffers(driContextPriv, driDrawPriv);
 871           if (driDrawPriv != driReadPriv)
 872               intel_update_renderbuffers(driContextPriv, driReadPriv);
 873       } else {
 874           /* XXX FBO temporary fix-ups! */
 875           /* if the renderbuffers don't have regions, init them from the context */
 876          struct intel_renderbuffer *irbDepth
 877             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 878          struct intel_renderbuffer *irbStencil
 879             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 880
 881          if (intel_fb->color_rb[0]) {
 882             intel_renderbuffer_set_region(intel_fb->color_rb[0],
 883                                           intel->front_region);
 884          }
 885          if (intel_fb->color_rb[1]) {
 886             intel_renderbuffer_set_region(intel_fb->color_rb[1],
 887                                           intel->back_region);
 888          }
 889
 890          if (irbDepth) {
 891             intel_renderbuffer_set_region(irbDepth, intel->depth_region);
 892          }
 893          if (irbStencil) {
 894             intel_renderbuffer_set_region(irbStencil, intel->depth_region);
 895          }
 896       }
 897
 898       /* set GLframebuffer size to match window, if needed */
 899       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 900
 901       if (driReadPriv != driDrawPriv) {
 902          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 903       }
 904
 905       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 906
 907       /* The drawbuffer won't always be updated by _mesa_make_current:
 908        */
 909       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 910
 911          if (intel->driReadDrawable != driReadPriv)
 912             intel->driReadDrawable = driReadPriv;
 913
 914          if (intel->driDrawable != driDrawPriv) {
 915             if (driDrawPriv->swap_interval == (unsigned)-1) {
 916                int i;
 917
 918                driDrawPriv->vblFlags = (intel->intelScreen->irq_active != 0)
 919                   ? driGetDefaultVBlankFlags(&intel->optionCache)
 920                  : VBLANK_FLAG_NO_IRQ;
 921
 922                /* Prevent error printf if one crtc is disabled, this will
 923                 * be properly calculated in intelWindowMoved() next.
 924                 */
 925                 driDrawPriv->vblFlags = intelFixupVblank(intel, driDrawPriv);
 926
 927                (*psp->systemTime->getUST) (&intel_fb->swap_ust);
 928                driDrawableInitVBlank(driDrawPriv);
 929                intel_fb->vbl_waited = driDrawPriv->vblSeq;
 930
 931                for (i = 0; i < 2; i++) {
 932                   if (intel_fb->color_rb[i])
 933                      intel_fb->color_rb[i]->vbl_pending = driDrawPriv->vblSeq;
 934                }
 935             }
 936             intel->driDrawable = driDrawPriv;
 937             intelWindowMoved(intel);
 938          }
 939
 940          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 941       }
 942    }
 943    else {
 944       _mesa_make_current(NULL, NULL, NULL);
 945    }
 946
 947    return GL_TRUE;
 948 }
 949
 950 static void
 951 intelContendedLock(struct intel_context *intel, GLuint flags)
 952 {
 953    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 954    __DRIscreenPrivate *sPriv = intel->driScreen;
 955    volatile drm_i915_sarea_t *sarea = intel->sarea;
 956    int me = intel->hHWContext;
 957
 958    drmGetLock(intel->driFd, intel->hHWContext, flags);
 959    intel->locked = 1;
 960
 961    if (INTEL_DEBUG & DEBUG_LOCK)
 962       _mesa_printf("%s - got contended lock\n", __progname);
 963
 964    /* If the window moved, may need to set a new cliprect now.
 965     *
 966     * NOTE: This releases and regains the hw lock, so all state
 967     * checking must be done *after* this call:
 968     */
 969    if (dPriv)
 970        DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 971
 972    if (sarea && sarea->ctxOwner != me) {
 973       if (INTEL_DEBUG & DEBUG_BUFMGR) {
 974          fprintf(stderr, "Lost Context: sarea->ctxOwner %x me %x\n",
 975                  sarea->ctxOwner, me);
 976       }
 977       sarea->ctxOwner = me;
 978    }
 979
 980    /* If the last consumer of the texture memory wasn't us, notify the fake
 981     * bufmgr and record the new owner.  We should have the memory shared
 982     * between contexts of a single fake bufmgr, but this will at least make
 983     * things correct for now.
 984     */
 985    if (!intel->ttm && sarea->texAge != intel->hHWContext) {
 986       sarea->texAge = intel->hHWContext;
 987       intel_bufmgr_fake_contended_lock_take(intel->bufmgr);
 988       if (INTEL_DEBUG & DEBUG_BATCH)
 989          intel_decode_context_reset();
 990       if (INTEL_DEBUG & DEBUG_BUFMGR)
 991          fprintf(stderr, "Lost Textures: sarea->texAge %x hw context %x\n",
 992                  sarea->ctxOwner, intel->hHWContext);
 993    }
 994
 995    /* Drawable changed?
 996     */
 997    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 998        intelWindowMoved(intel);
 999        intel->lastStamp = dPriv->lastStamp;
1000    }
1001 }
1002
1003
1004 _glthread_DECLARE_STATIC_MUTEX(lockMutex);
1005
1006 /* Lock the hardware and validate our state.
1007  */
1008 void LOCK_HARDWARE( struct intel_context *intel )
1009 {
1010     __DRIdrawable *dPriv = intel->driDrawable;
1011     __DRIscreen *sPriv = intel->driScreen;
1012     char __ret = 0;
1013     struct intel_framebuffer *intel_fb = NULL;
1014     struct intel_renderbuffer *intel_rb = NULL;
1015
1016     _glthread_LOCK_MUTEX(lockMutex);
1017     assert(!intel->locked);
1018     intel->locked = 1;
1019
1020     if (intel->driDrawable) {
1021        intel_fb = intel->driDrawable->driverPrivate;
1022
1023        if (intel_fb)
1024           intel_rb =
1025              intel_get_renderbuffer(&intel_fb->Base,
1026                                     intel_fb->Base._ColorDrawBufferIndexes[0]);
1027     }
1028
1029     if (intel_rb && dPriv->vblFlags &&
1030         !(dPriv->vblFlags & VBLANK_FLAG_NO_IRQ) &&
1031         (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
1032         drmVBlank vbl;
1033
1034         vbl.request.type = DRM_VBLANK_ABSOLUTE;
1035
1036         if ( dPriv->vblFlags & VBLANK_FLAG_SECONDARY ) {
1037             vbl.request.type |= DRM_VBLANK_SECONDARY;
1038         }
1039
1040         vbl.request.sequence = intel_rb->vbl_pending;
1041         drmWaitVBlank(intel->driFd, &vbl);
1042         intel_fb->vbl_waited = vbl.reply.sequence;
1043     }
1044
1045     if (!sPriv->dri2.enabled) {
1046         DRM_CAS(intel->driHwLock, intel->hHWContext,
1047                 (DRM_LOCK_HELD|intel->hHWContext), __ret);
1048
1049         if (__ret)
1050             intelContendedLock( intel, 0 );
1051     }
1052
1053
1054     if (INTEL_DEBUG & DEBUG_LOCK)
1055       _mesa_printf("%s - locked\n", __progname);
1056 }
1057
1058
1059 /* Unlock the hardware using the global current context
1060  */
1061 void UNLOCK_HARDWARE( struct intel_context *intel )
1062 {
1063     __DRIscreen *sPriv = intel->driScreen;
1064
1065    intel->vtbl.note_unlock( intel );
1066    intel->locked = 0;
1067
1068    if (!sPriv->dri2.enabled)
1069       DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
1070
1071    _glthread_UNLOCK_MUTEX(lockMutex);
1072
1073    if (INTEL_DEBUG & DEBUG_LOCK)
1074       _mesa_printf("%s - unlocked\n", __progname);
1075
1076    /**
1077     * Nothing should be left in batch outside of LOCK/UNLOCK which references
1078     * cliprects.
1079     */
1080    if (intel->batch->cliprect_mode == REFERENCES_CLIPRECTS)
1081       intel_batchbuffer_flush(intel->batch);
1082 }
1083