src/mesa/drivers/dri/i915tex/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 "glheader.h"
  30 #include "context.h"
  31 #include "matrix.h"
  32 #include "simple_list.h"
  33 #include "extensions.h"
  34 #include "framebuffer.h"
  35 #include "imports.h"
  36 #include "points.h"
  37
  38 #include "swrast/swrast.h"
  39 #include "swrast_setup/swrast_setup.h"
  40 #include "tnl/tnl.h"
  41
  42 #include "tnl/t_pipeline.h"
  43 #include "tnl/t_vertex.h"
  44
  45 #include "drivers/common/driverfuncs.h"
  46
  47 #include "intel_screen.h"
  48
  49 #include "i830_dri.h"
  50
  51 #include "intel_buffers.h"
  52 #include "intel_tex.h"
  53 #include "intel_span.h"
  54 #include "intel_tris.h"
  55 #include "intel_ioctl.h"
  56 #include "intel_batchbuffer.h"
  57 #include "intel_blit.h"
  58 #include "intel_pixel.h"
  59 #include "intel_regions.h"
  60 #include "intel_buffer_objects.h"
  61 #include "intel_fbo.h"
  62
  63 #include "pipe/softpipe/sp_context.h"
  64 #include "state_tracker/st_public.h"
  65
  66
  67 #include "drirenderbuffer.h"
  68 #include "vblank.h"
  69 #include "utils.h"
  70 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  71 #ifndef INTEL_DEBUG
  72 int INTEL_DEBUG = (0);
  73 #endif
  74
  75 #define need_GL_ARB_multisample
  76 #define need_GL_ARB_point_parameters
  77 #define need_GL_ARB_texture_compression
  78 #define need_GL_ARB_vertex_buffer_object
  79 #define need_GL_ARB_vertex_program
  80 #define need_GL_ARB_window_pos
  81 #define need_GL_EXT_blend_color
  82 #define need_GL_EXT_blend_equation_separate
  83 #define need_GL_EXT_blend_func_separate
  84 #define need_GL_EXT_blend_minmax
  85 #define need_GL_EXT_cull_vertex
  86 #define need_GL_EXT_fog_coord
  87 #define need_GL_EXT_framebuffer_object
  88 #define need_GL_EXT_multi_draw_arrays
  89 #define need_GL_EXT_secondary_color
  90 #define need_GL_NV_vertex_program
  91 #include "extension_helper.h"
  92
  93
  94 #define DRIVER_DATE                     "20061102"
  95
  96 _glthread_Mutex lockMutex;
  97 static GLboolean lockMutexInit = GL_FALSE;
  98
  99
 100 static const GLubyte *
 101 intelGetString(GLcontext * ctx, GLenum name)
 102 {
 103    const char *chipset;
 104    static char buffer[128];
 105
 106    switch (name) {
 107    case GL_VENDOR:
 108       return (GLubyte *) "Tungsten Graphics, Inc";
 109       break;
 110
 111    case GL_RENDERER:
 112       switch (intel_context(ctx)->intelScreen->deviceID) {
 113       case PCI_CHIP_845_G:
 114          chipset = "Intel(R) 845G";
 115          break;
 116       case PCI_CHIP_I830_M:
 117          chipset = "Intel(R) 830M";
 118          break;
 119       case PCI_CHIP_I855_GM:
 120          chipset = "Intel(R) 852GM/855GM";
 121          break;
 122       case PCI_CHIP_I865_G:
 123          chipset = "Intel(R) 865G";
 124          break;
 125       case PCI_CHIP_I915_G:
 126          chipset = "Intel(R) 915G";
 127          break;
 128       case PCI_CHIP_I915_GM:
 129          chipset = "Intel(R) 915GM";
 130          break;
 131       case PCI_CHIP_I945_G:
 132          chipset = "Intel(R) 945G";
 133          break;
 134       case PCI_CHIP_I945_GM:
 135          chipset = "Intel(R) 945GM";
 136          break;
 137       case PCI_CHIP_I945_GME:
 138          chipset = "Intel(R) 945GME";
 139          break;
 140       case PCI_CHIP_G33_G:
 141          chipset = "Intel(R) G33";
 142          break;
 143       case PCI_CHIP_Q35_G:
 144          chipset = "Intel(R) Q35";
 145          break;
 146       case PCI_CHIP_Q33_G:
 147          chipset = "Intel(R) Q33";
 148          break;
 149       default:
 150          chipset = "Unknown Intel Chipset";
 151          break;
 152       }
 153
 154       (void) driGetRendererString(buffer, chipset, DRIVER_DATE, 0);
 155       return (GLubyte *) buffer;
 156
 157    default:
 158       return NULL;
 159    }
 160 }
 161
 162
 163 /**
 164  * Extension strings exported by the intel driver.
 165  *
 166  * \note
 167  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 168  * old i830-specific driver.
 169  */
 170 const struct dri_extension card_extensions[] = {
 171    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 172    {"GL_ARB_multitexture", NULL},
 173    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 174    {"GL_ARB_texture_border_clamp", NULL},
 175    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 176    {"GL_ARB_texture_cube_map", NULL},
 177    {"GL_ARB_texture_env_add", NULL},
 178    {"GL_ARB_texture_env_combine", NULL},
 179    {"GL_ARB_texture_env_dot3", NULL},
 180    {"GL_ARB_texture_mirrored_repeat", NULL},
 181    {"GL_ARB_texture_rectangle", NULL},
 182    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 183    {"GL_ARB_pixel_buffer_object", NULL},
 184    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 185    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 186    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 187    {"GL_EXT_blend_equation_separate",
 188     GL_EXT_blend_equation_separate_functions},
 189    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 190    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 191    {"GL_EXT_blend_subtract", NULL},
 192    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 193    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 194    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 195    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 196 #if 1                           /* XXX FBO temporary? */
 197    {"GL_EXT_packed_depth_stencil", NULL},
 198 #endif
 199    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 200    {"GL_EXT_stencil_wrap", NULL},
 201    {"GL_EXT_texture_edge_clamp", NULL},
 202    {"GL_EXT_texture_env_combine", NULL},
 203    {"GL_EXT_texture_env_dot3", NULL},
 204    {"GL_EXT_texture_filter_anisotropic", NULL},
 205    {"GL_EXT_texture_lod_bias", NULL},
 206    {"GL_3DFX_texture_compression_FXT1", NULL},
 207    {"GL_APPLE_client_storage", NULL},
 208    {"GL_MESA_pack_invert", NULL},
 209    {"GL_MESA_ycbcr_texture", NULL},
 210    {"GL_NV_blend_square", NULL},
 211    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 212    {"GL_NV_vertex_program1_1", NULL},
 213 /*     { "GL_SGIS_generate_mipmap",           NULL }, */
 214    {NULL, NULL}
 215 };
 216
 217 extern const struct tnl_pipeline_stage _intel_render_stage;
 218
 219 static const struct tnl_pipeline_stage *intel_pipeline[] = {
 220    &_tnl_vertex_transform_stage,
 221    &_tnl_vertex_cull_stage,
 222    &_tnl_normal_transform_stage,
 223    &_tnl_lighting_stage,
 224    &_tnl_fog_coordinate_stage,
 225    &_tnl_texgen_stage,
 226    &_tnl_texture_transform_stage,
 227    &_tnl_point_attenuation_stage,
 228    &_tnl_vertex_program_stage,
 229 #if 1
 230    &_intel_render_stage,        /* ADD: unclipped rastersetup-to-dma */
 231 #endif
 232    &_tnl_render_stage,
 233    0,
 234 };
 235
 236
 237 static const struct dri_debug_control debug_control[] = {
 238    {"tex", DEBUG_TEXTURE},
 239    {"state", DEBUG_STATE},
 240    {"ioctl", DEBUG_IOCTL},
 241    {"blit", DEBUG_BLIT},
 242    {"mip", DEBUG_MIPTREE},
 243    {"fall", DEBUG_FALLBACKS},
 244    {"verb", DEBUG_VERBOSE},
 245    {"bat", DEBUG_BATCH},
 246    {"pix", DEBUG_PIXEL},
 247    {"buf", DEBUG_BUFMGR},
 248    {"reg", DEBUG_REGION},
 249    {"fbo", DEBUG_FBO},
 250    {"lock", DEBUG_LOCK},
 251    {NULL, 0}
 252 };
 253
 254
 255 static void
 256 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 257 {
 258    _swrast_InvalidateState(ctx, new_state);
 259    _swsetup_InvalidateState(ctx, new_state);
 260    _vbo_InvalidateState(ctx, new_state);
 261    _tnl_InvalidateState(ctx, new_state);
 262    _tnl_invalidate_vertex_state(ctx, new_state);
 263
 264    st_invalidate_state( ctx, new_state );
 265
 266    intel_context(ctx)->NewGLState |= new_state;
 267 }
 268
 269
 270 void
 271 intelFlush(GLcontext * ctx)
 272 {
 273    struct intel_context *intel = intel_context(ctx);
 274
 275    if (intel->Fallback)
 276       _swrast_flush(ctx);
 277
 278    INTEL_FIREVERTICES(intel);
 279
 280    if (intel->batch->map != intel->batch->ptr)
 281       intel_batchbuffer_flush(intel->batch);
 282
 283    /* XXX: Need to do an MI_FLUSH here.
 284     */
 285 }
 286
 287
 288 /**
 289  * Check if we need to rotate/warp the front color buffer to the
 290  * rotated screen.  We generally need to do this when we get a glFlush
 291  * or glFinish after drawing to the front color buffer.
 292  * If no rotation, just copy the private fake front buffer to the real one.
 293  */
 294 static void
 295 intelCheckFrontUpdate(GLcontext * ctx)
 296 {
 297    struct intel_context *intel = intel_context(ctx);
 298    if (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] ==
 299        BUFFER_BIT_FRONT_LEFT) {
 300       intelScreenPrivate *screen = intel->intelScreen;
 301       __DRIdrawablePrivate *dPriv = intel->driDrawable;
 302       if (screen->current_rotation != 0) {
 303          intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT);
 304       }
 305       else {
 306          intelCopyBuffer(dPriv, NULL);
 307       }
 308    }
 309 }
 310
 311
 312 /**
 313  * Called via glFlush.
 314  */
 315 static void
 316 intelglFlush(GLcontext * ctx)
 317 {
 318    intelFlush(ctx);
 319    intelCheckFrontUpdate(ctx);
 320 }
 321
 322 void
 323 intelFinish(GLcontext * ctx)
 324 {
 325    struct intel_context *intel = intel_context(ctx);
 326    intelFlush(ctx);
 327    if (intel->batch->last_fence) {
 328       driFenceFinish(intel->batch->last_fence,
 329                      0, GL_FALSE);
 330       driFenceUnReference(intel->batch->last_fence);
 331       intel->batch->last_fence = NULL;
 332    }
 333    intelCheckFrontUpdate(ctx);
 334 }
 335
 336
 337 void
 338 intelInitDriverFunctions(struct dd_function_table *functions)
 339 {
 340    _mesa_init_driver_functions(functions);
 341
 342    functions->Flush = intelglFlush;
 343    functions->Finish = intelFinish;
 344    functions->GetString = intelGetString;
 345    functions->UpdateState = intelInvalidateState;
 346    functions->CopyColorTable = _swrast_CopyColorTable;
 347    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 348    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 349    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 350
 351    intelInitTextureFuncs(functions);
 352    intelInitPixelFuncs(functions);
 353    intelInitStateFuncs(functions);
 354    intelInitBufferFuncs(functions);
 355 }
 356
 357
 358 GLboolean
 359 intelInitContext(struct intel_context *intel,
 360                  const __GLcontextModes * mesaVis,
 361                  __DRIcontextPrivate * driContextPriv,
 362                  void *sharedContextPrivate,
 363                  struct dd_function_table *functions)
 364 {
 365    GLcontext *ctx = &intel->ctx;
 366    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 367    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 368    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 369    drmI830Sarea *saPriv = (drmI830Sarea *)
 370       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 371    int fthrottle_mode;
 372    GLboolean havePools;
 373
 374    DRM_LIGHT_LOCK(sPriv->fd, &sPriv->pSAREA->lock, driContextPriv->hHWContext);
 375    havePools = intelCreatePools(intelScreen);
 376    DRM_UNLOCK(sPriv->fd, &sPriv->pSAREA->lock, driContextPriv->hHWContext);
 377
 378    if (!havePools)
 379       return GL_FALSE;
 380
 381    if (!_mesa_initialize_context(&intel->ctx,
 382                                  mesaVis, shareCtx,
 383                                  functions, (void *) intel))
 384       return GL_FALSE;
 385
 386    driContextPriv->driverPrivate = intel;
 387    intel->intelScreen = intelScreen;
 388    intel->driScreen = sPriv;
 389    intel->sarea = saPriv;
 390
 391    intel->width = intelScreen->width;
 392    intel->height = intelScreen->height;
 393    intel->current_rotation = intelScreen->current_rotation;
 394
 395    if (!lockMutexInit) {
 396       lockMutexInit = GL_TRUE;
 397       _glthread_INIT_MUTEX(lockMutex);
 398    }
 399
 400    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 401                        intel->driScreen->myNum, "i915");
 402
 403    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 404
 405    /* This doesn't yet catch all non-conformant rendering, but it's a
 406     * start.
 407     */
 408    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 409       intel->strict_conformance = 1;
 410    }
 411
 412    ctx->Const.MinLineWidth = 1.0;
 413    ctx->Const.MinLineWidthAA = 1.0;
 414    ctx->Const.MaxLineWidth = 3.0;
 415    ctx->Const.MaxLineWidthAA = 3.0;
 416    ctx->Const.LineWidthGranularity = 1.0;
 417
 418    ctx->Const.MinPointSize = 1.0;
 419    ctx->Const.MinPointSizeAA = 1.0;
 420    ctx->Const.MaxPointSize = 255.0;
 421    ctx->Const.MaxPointSizeAA = 3.0;
 422    ctx->Const.PointSizeGranularity = 1.0;
 423
 424    /* reinitialize the context point state.
 425     * It depend on constants in __GLcontextRec::Const
 426     */
 427    _mesa_init_point(ctx);
 428
 429    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 430
 431    /* Initialize the software rasterizer and helper modules. */
 432    _swrast_CreateContext(ctx);
 433    _vbo_CreateContext(ctx);
 434    _tnl_CreateContext(ctx);
 435    _swsetup_CreateContext(ctx);
 436
 437    /* Install the customized pipeline: */
 438    _tnl_destroy_pipeline(ctx);
 439    _tnl_install_pipeline(ctx, intel_pipeline);
 440
 441    /* Configure swrast to match hardware characteristics: */
 442    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 443    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 444
 445    /* Dri stuff */
 446    intel->hHWContext = driContextPriv->hHWContext;
 447    intel->driFd = sPriv->fd;
 448    intel->driHwLock = (drmLock *) & sPriv->pSAREA->lock;
 449
 450    intel->hw_stipple = 1;
 451
 452    /* XXX FBO: this doesn't seem to be used anywhere */
 453    switch (mesaVis->depthBits) {
 454    case 0:                     /* what to do in this case? */
 455    case 16:
 456       intel->polygon_offset_scale = 1.0 / 0xffff;
 457       break;
 458    case 24:
 459       intel->polygon_offset_scale = 2.0 / 0xffffff;     /* req'd to pass glean */
 460       break;
 461    default:
 462       assert(0);
 463       break;
 464    }
 465
 466    /* Initialize swrast, tnl driver tables: */
 467    intelInitSpanFuncs(ctx);
 468    intelInitTriFuncs(ctx);
 469
 470
 471    intel->RenderIndex = ~0;
 472
 473    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 474    intel->iw.irq_seq = -1;
 475    intel->irqsEmitted = 0;
 476
 477    intel->do_irqs = (intel->intelScreen->irq_active &&
 478                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 479
 480    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 481
 482    _math_matrix_ctr(&intel->ViewportMatrix);
 483
 484    /* Disable imaging extension until convolution is working in
 485     * teximage paths:
 486     */
 487    driInitExtensions(ctx, card_extensions,
 488 /*                    GL_TRUE, */
 489                      GL_FALSE);
 490
 491
 492    intel->batch = intel_batchbuffer_alloc(intel);
 493    intel->last_swap_fence = NULL;
 494    intel->first_swap_fence = NULL;
 495
 496    intel_bufferobj_init(intel);
 497    intel_fbo_init(intel);
 498
 499    if (intel->ctx.Mesa_DXTn) {
 500       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 501       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 502    }
 503    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 504       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 505    }
 506
 507    intel->prim.primitive = ~0;
 508
 509
 510 #if DO_DEBUG
 511    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 512 #endif
 513
 514    if (getenv("INTEL_NO_RAST")) {
 515       fprintf(stderr, "disabling 3D rasterization\n");
 516       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 517    }
 518
 519
 520    st_create_context( &intel->ctx,
 521                       softpipe_create() );
 522
 523
 524    return GL_TRUE;
 525 }
 526
 527 void
 528 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 529 {
 530    struct intel_context *intel =
 531       (struct intel_context *) driContextPriv->driverPrivate;
 532
 533    assert(intel);               /* should never be null */
 534    if (intel) {
 535       GLboolean release_texture_heaps;
 536
 537       INTEL_FIREVERTICES(intel);
 538
 539       intel->vtbl.destroy(intel);
 540
 541       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 542       _swsetup_DestroyContext(&intel->ctx);
 543       _tnl_DestroyContext(&intel->ctx);
 544       _vbo_DestroyContext(&intel->ctx);
 545
 546       _swrast_DestroyContext(&intel->ctx);
 547       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 548
 549       intel_batchbuffer_free(intel->batch);
 550
 551       if (intel->last_swap_fence) {
 552          driFenceFinish(intel->last_swap_fence, DRM_FENCE_TYPE_EXE, GL_TRUE);
 553          driFenceUnReference(intel->last_swap_fence);
 554          intel->last_swap_fence = NULL;
 555       }
 556       if (intel->first_swap_fence) {
 557          driFenceFinish(intel->first_swap_fence, DRM_FENCE_TYPE_EXE, GL_TRUE);
 558          driFenceUnReference(intel->first_swap_fence);
 559          intel->first_swap_fence = NULL;
 560       }
 561
 562
 563       if (release_texture_heaps) {
 564          /* This share group is about to go away, free our private
 565           * texture object data.
 566           */
 567          if (INTEL_DEBUG & DEBUG_TEXTURE)
 568             fprintf(stderr, "do something to free texture heaps\n");
 569       }
 570
 571       /* free the Mesa context */
 572       _mesa_free_context_data(&intel->ctx);
 573    }
 574 }
 575
 576 GLboolean
 577 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 578 {
 579    return GL_TRUE;
 580 }
 581
 582 GLboolean
 583 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 584                  __DRIdrawablePrivate * driDrawPriv,
 585                  __DRIdrawablePrivate * driReadPriv)
 586 {
 587
 588 #if 0
 589    if (driDrawPriv) {
 590       fprintf(stderr, "x %d, y %d, width %d, height %d\n",
 591               driDrawPriv->x, driDrawPriv->y, driDrawPriv->w, driDrawPriv->h);
 592    }
 593 #endif
 594
 595    if (driContextPriv) {
 596       struct intel_context *intel =
 597          (struct intel_context *) driContextPriv->driverPrivate;
 598       struct intel_framebuffer *intel_fb =
 599          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 600       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 601
 602       /* this is a hack so we have a valid context when the region allocation
 603          is done. Need a per-screen context? */
 604       intel->intelScreen->dummyctxptr = intel;
 605
 606       /* XXX FBO temporary fix-ups! */
 607       /* if the renderbuffers don't have regions, init them from the context */
 608       {
 609          struct intel_renderbuffer *irbDepth
 610             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 611          struct intel_renderbuffer *irbStencil
 612             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 613
 614          if (intel_fb->color_rb[0] && !intel_fb->color_rb[0]->region) {
 615             intel_region_reference(&intel_fb->color_rb[0]->region,
 616                                    intel->intelScreen->front_region);
 617          }
 618          if (intel_fb->color_rb[1] && !intel_fb->color_rb[1]->region) {
 619             intel_region_reference(&intel_fb->color_rb[1]->region,
 620                                    intel->intelScreen->back_region);
 621          }
 622          if (intel_fb->color_rb[2] && !intel_fb->color_rb[2]->region) {
 623             intel_region_reference(&intel_fb->color_rb[2]->region,
 624                                    intel->intelScreen->third_region);
 625          }
 626          if (irbDepth && !irbDepth->region) {
 627             intel_region_reference(&irbDepth->region, intel->intelScreen->depth_region);
 628          }
 629          if (irbStencil && !irbStencil->region) {
 630             intel_region_reference(&irbStencil->region, intel->intelScreen->depth_region);
 631          }
 632       }
 633
 634       /* set GLframebuffer size to match window, if needed */
 635       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 636
 637       if (driReadPriv != driDrawPriv) {
 638          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 639       }
 640
 641       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 642       intel->intelScreen->dummyctxptr = &intel->ctx;
 643
 644       /* The drawbuffer won't always be updated by _mesa_make_current:
 645        */
 646       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 647
 648          if (intel->driDrawable != driDrawPriv) {
 649             intel_fb->vblank_flags = (intel->intelScreen->irq_active != 0)
 650                ? driGetDefaultVBlankFlags(&intel->optionCache)
 651                : VBLANK_FLAG_NO_IRQ;
 652             (*dri_interface->getUST) (&intel_fb->swap_ust);
 653             driDrawableInitVBlank(driDrawPriv, intel_fb->vblank_flags,
 654                                   &intel_fb->vbl_seq);
 655             intel->driDrawable = driDrawPriv;
 656             intelWindowMoved(intel);
 657          }
 658
 659          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 660       }
 661    }
 662    else {
 663       _mesa_make_current(NULL, NULL, NULL);
 664    }
 665
 666    return GL_TRUE;
 667 }
 668
 669 static void
 670 intelContendedLock(struct intel_context *intel, GLuint flags)
 671 {
 672    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 673    __DRIscreenPrivate *sPriv = intel->driScreen;
 674    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 675    drmI830Sarea *sarea = intel->sarea;
 676
 677    drmGetLock(intel->driFd, intel->hHWContext, flags);
 678
 679    if (INTEL_DEBUG & DEBUG_LOCK)
 680       _mesa_printf("%s - got contended lock\n", __progname);
 681
 682    /* If the window moved, may need to set a new cliprect now.
 683     *
 684     * NOTE: This releases and regains the hw lock, so all state
 685     * checking must be done *after* this call:
 686     */
 687    if (dPriv)
 688       intel->revalidateDrawable = GL_TRUE;
 689 //      DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 690
 691    if (sarea->width != intelScreen->width ||
 692        sarea->height != intelScreen->height ||
 693        sarea->rotation != intelScreen->current_rotation) {
 694
 695       intelUpdateScreenRotation(sPriv, sarea);
 696    }
 697
 698 #if 0
 699    if (sarea->width != intel->width ||
 700        sarea->height != intel->height ||
 701        sarea->rotation != intel->current_rotation) {
 702
 703       void *batchMap = intel->batch->map;
 704
 705       /*
 706        * FIXME: Really only need to do this when drawing to a
 707        * common back- or front buffer.
 708        */
 709
 710       /*
 711        * This will drop the outstanding batchbuffer on the floor
 712        */
 713
 714       if (batchMap != NULL) {
 715          driBOUnmap(intel->batch->buffer);
 716          intel->batch->map = NULL;
 717       }
 718
 719       intel_batchbuffer_reset(intel->batch);
 720
 721       if (batchMap == NULL) {
 722          driBOUnmap(intel->batch->buffer);
 723          intel->batch->map = NULL;
 724       }
 725
 726       /* lose all primitives */
 727       intel->prim.primitive = ~0;
 728       intel->prim.start_ptr = 0;
 729       intel->prim.flush = 0;
 730
 731       /* re-emit all state */
 732       intel->vtbl.lost_hardware(intel);
 733
 734       /* force window update */
 735       intel->lastStamp = 0;
 736
 737       intel->width = sarea->width;
 738       intel->height = sarea->height;
 739       intel->current_rotation = sarea->rotation;
 740    }
 741 #endif
 742 }
 743
 744
 745
 746 /* Lock the hardware and validate our state.
 747  */
 748 void LOCK_HARDWARE( struct intel_context *intel )
 749 {
 750     char __ret=0;
 751     struct intel_framebuffer *intel_fb = NULL;
 752     struct intel_renderbuffer *intel_rb = NULL;
 753     _glthread_LOCK_MUTEX(lockMutex);
 754     assert(!intel->locked);
 755
 756     if (intel->driDrawable) {
 757        intel_fb = intel->driDrawable->driverPrivate;
 758
 759        if (intel_fb)
 760           intel_rb =
 761              intel_get_renderbuffer(&intel_fb->Base,
 762                                     intel_fb->Base._ColorDrawBufferMask[0] ==
 763                                     BUFFER_BIT_FRONT_LEFT ? BUFFER_FRONT_LEFT :
 764                                     BUFFER_BACK_LEFT);
 765     }
 766
 767     if (intel_rb && (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 768         drmVBlank vbl;
 769
 770         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 771
 772         if ( intel_fb->vblank_flags & VBLANK_FLAG_SECONDARY ) {
 773             vbl.request.type |= DRM_VBLANK_SECONDARY;
 774         }
 775
 776         vbl.request.sequence = intel_rb->vbl_pending;
 777         drmWaitVBlank(intel->driFd, &vbl);
 778         intel_fb->vbl_waited = vbl.reply.sequence;
 779     }
 780
 781     DRM_CAS(intel->driHwLock, intel->hHWContext,
 782         (DRM_LOCK_HELD|intel->hHWContext), __ret);
 783
 784     if (__ret)
 785         intelContendedLock( intel, 0 );
 786
 787     if (INTEL_DEBUG & DEBUG_LOCK)
 788       _mesa_printf("%s - locked\n", __progname);
 789
 790     intel->locked = 1;
 791 }
 792
 793
 794   /* Unlock the hardware using the global current context
 795    */
 796 void UNLOCK_HARDWARE( struct intel_context *intel )
 797 {
 798    intel->locked = 0;
 799
 800    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 801
 802    _glthread_UNLOCK_MUTEX(lockMutex);
 803
 804    if (INTEL_DEBUG & DEBUG_LOCK)
 805       _mesa_printf("%s - unlocked\n", __progname);
 806 }
 807