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 #include "i915_disasm.h"
  63
  64 #include "drirenderbuffer.h"
  65 #include "vblank.h"
  66 #include "utils.h"
  67 #include "xmlpool.h"            /* for symbolic values of enum-type options */
  68 #ifndef INTEL_DEBUG
  69 int INTEL_DEBUG = (0);
  70 #endif
  71
  72 #define need_GL_ARB_multisample
  73 #define need_GL_ARB_point_parameters
  74 #define need_GL_ARB_texture_compression
  75 #define need_GL_ARB_vertex_buffer_object
  76 #define need_GL_ARB_vertex_program
  77 #define need_GL_ARB_window_pos
  78 #define need_GL_EXT_blend_color
  79 #define need_GL_EXT_blend_equation_separate
  80 #define need_GL_EXT_blend_func_separate
  81 #define need_GL_EXT_blend_minmax
  82 #define need_GL_EXT_cull_vertex
  83 #define need_GL_EXT_fog_coord
  84 #define need_GL_EXT_framebuffer_object
  85 #define need_GL_EXT_multi_draw_arrays
  86 #define need_GL_EXT_secondary_color
  87 #define need_GL_NV_vertex_program
  88 #include "extension_helper.h"
  89
  90
  91 #define DRIVER_DATE                     "20061102"
  92
  93 _glthread_Mutex lockMutex;
  94 static GLboolean lockMutexInit = GL_FALSE;
  95
  96
  97 static const GLubyte *
  98 intelGetString(GLcontext * ctx, GLenum name)
  99 {
 100    const char *chipset;
 101    static char buffer[128];
 102
 103    switch (name) {
 104    case GL_VENDOR:
 105       return (GLubyte *) "Tungsten Graphics, Inc";
 106       break;
 107
 108    case GL_RENDERER:
 109       switch (intel_context(ctx)->intelScreen->deviceID) {
 110       case PCI_CHIP_845_G:
 111          chipset = "Intel(R) 845G";
 112          break;
 113       case PCI_CHIP_I830_M:
 114          chipset = "Intel(R) 830M";
 115          break;
 116       case PCI_CHIP_I855_GM:
 117          chipset = "Intel(R) 852GM/855GM";
 118          break;
 119       case PCI_CHIP_I865_G:
 120          chipset = "Intel(R) 865G";
 121          break;
 122       case PCI_CHIP_I915_G:
 123          chipset = "Intel(R) 915G";
 124          break;
 125       case PCI_CHIP_I915_GM:
 126          chipset = "Intel(R) 915GM";
 127          break;
 128       case PCI_CHIP_I945_G:
 129          chipset = "Intel(R) 945G";
 130          break;
 131       case PCI_CHIP_I945_GM:
 132          chipset = "Intel(R) 945GM";
 133          break;
 134       case PCI_CHIP_I945_GME:
 135          chipset = "Intel(R) 945GME";
 136          break;
 137       case PCI_CHIP_G33_G:
 138          chipset = "Intel(R) G33";
 139          break;
 140       case PCI_CHIP_Q35_G:
 141          chipset = "Intel(R) Q35";
 142          break;
 143       case PCI_CHIP_Q33_G:
 144          chipset = "Intel(R) Q33";
 145          break;
 146       default:
 147          chipset = "Unknown Intel Chipset";
 148          break;
 149       }
 150
 151       (void) driGetRendererString(buffer, chipset, DRIVER_DATE, 0);
 152       return (GLubyte *) buffer;
 153
 154    default:
 155       return NULL;
 156    }
 157 }
 158
 159
 160 /**
 161  * Extension strings exported by the intel driver.
 162  *
 163  * \note
 164  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 165  * old i830-specific driver.
 166  */
 167 const struct dri_extension card_extensions[] = {
 168    {"GL_ARB_multisample", GL_ARB_multisample_functions},
 169    {"GL_ARB_multitexture", NULL},
 170    {"GL_ARB_point_parameters", GL_ARB_point_parameters_functions},
 171    {"GL_ARB_texture_border_clamp", NULL},
 172    {"GL_ARB_texture_compression", GL_ARB_texture_compression_functions},
 173    {"GL_ARB_texture_cube_map", NULL},
 174    {"GL_ARB_texture_env_add", NULL},
 175    {"GL_ARB_texture_env_combine", NULL},
 176    {"GL_ARB_texture_env_dot3", NULL},
 177    {"GL_ARB_texture_mirrored_repeat", NULL},
 178    {"GL_ARB_texture_rectangle", NULL},
 179    {"GL_ARB_vertex_buffer_object", GL_ARB_vertex_buffer_object_functions},
 180    {"GL_ARB_vertex_program", GL_ARB_vertex_program_functions},
 181    {"GL_ARB_window_pos", GL_ARB_window_pos_functions},
 182    {"GL_EXT_blend_color", GL_EXT_blend_color_functions},
 183    {"GL_EXT_blend_equation_separate",
 184     GL_EXT_blend_equation_separate_functions},
 185    {"GL_EXT_blend_func_separate", GL_EXT_blend_func_separate_functions},
 186    {"GL_EXT_blend_minmax", GL_EXT_blend_minmax_functions},
 187    {"GL_EXT_blend_subtract", NULL},
 188    {"GL_EXT_cull_vertex", GL_EXT_cull_vertex_functions},
 189    {"GL_EXT_fog_coord", GL_EXT_fog_coord_functions},
 190    {"GL_EXT_multi_draw_arrays", GL_EXT_multi_draw_arrays_functions},
 191 #if 1                           /* XXX FBO temporary? */
 192    {"GL_EXT_packed_depth_stencil", NULL},
 193 #endif
 194    {"GL_EXT_secondary_color", GL_EXT_secondary_color_functions},
 195    {"GL_EXT_stencil_wrap", NULL},
 196    {"GL_EXT_texture_edge_clamp", NULL},
 197    {"GL_EXT_texture_env_combine", NULL},
 198    {"GL_EXT_texture_env_dot3", NULL},
 199    {"GL_EXT_texture_filter_anisotropic", NULL},
 200    {"GL_EXT_texture_lod_bias", NULL},
 201    {"GL_3DFX_texture_compression_FXT1", NULL},
 202    {"GL_APPLE_client_storage", NULL},
 203    {"GL_MESA_pack_invert", NULL},
 204    {"GL_MESA_ycbcr_texture", NULL},
 205    {"GL_NV_blend_square", NULL},
 206    {"GL_NV_vertex_program", GL_NV_vertex_program_functions},
 207    {"GL_NV_vertex_program1_1", NULL},
 208 /*     { "GL_SGIS_generate_mipmap",           NULL }, */
 209    {NULL, NULL}
 210 };
 211
 212 const struct dri_extension ttm_extensions[] = {
 213    {"GL_EXT_framebuffer_object", GL_EXT_framebuffer_object_functions},
 214    {"GL_ARB_pixel_buffer_object", NULL},
 215    {NULL, NULL}
 216 };
 217
 218 extern const struct tnl_pipeline_stage _intel_render_stage;
 219
 220 static const struct tnl_pipeline_stage *intel_pipeline[] = {
 221    &_tnl_vertex_transform_stage,
 222    &_tnl_vertex_cull_stage,
 223    &_tnl_normal_transform_stage,
 224    &_tnl_lighting_stage,
 225    &_tnl_fog_coordinate_stage,
 226    &_tnl_texgen_stage,
 227    &_tnl_texture_transform_stage,
 228    &_tnl_point_attenuation_stage,
 229    &_tnl_vertex_program_stage,
 230 #if 1
 231    &_intel_render_stage,        /* ADD: unclipped rastersetup-to-dma */
 232 #endif
 233    &_tnl_render_stage,
 234    0,
 235 };
 236
 237
 238 static const struct dri_debug_control debug_control[] = {
 239    {"tex", DEBUG_TEXTURE},
 240    {"state", DEBUG_STATE},
 241    {"ioctl", DEBUG_IOCTL},
 242    {"blit", DEBUG_BLIT},
 243    {"mip", DEBUG_MIPTREE},
 244    {"fall", DEBUG_FALLBACKS},
 245    {"verb", DEBUG_VERBOSE},
 246    {"bat", DEBUG_BATCH},
 247    {"pix", DEBUG_PIXEL},
 248    {"buf", DEBUG_BUFMGR},
 249    {"reg", DEBUG_REGION},
 250    {"fbo", DEBUG_FBO},
 251    {"lock", DEBUG_LOCK},
 252    {NULL, 0}
 253 };
 254
 255
 256 static void
 257 intelInvalidateState(GLcontext * ctx, GLuint new_state)
 258 {
 259    _swrast_InvalidateState(ctx, new_state);
 260    _swsetup_InvalidateState(ctx, new_state);
 261    _vbo_InvalidateState(ctx, new_state);
 262    _tnl_InvalidateState(ctx, new_state);
 263    _tnl_invalidate_vertex_state(ctx, new_state);
 264    intel_context(ctx)->NewGLState |= new_state;
 265 }
 266
 267
 268 void
 269 intelFlush(GLcontext * ctx)
 270 {
 271    struct intel_context *intel = intel_context(ctx);
 272
 273    if (intel->Fallback)
 274       _swrast_flush(ctx);
 275
 276    INTEL_FIREVERTICES(intel);
 277
 278    if (intel->batch->map != intel->batch->ptr)
 279       intel_batchbuffer_flush(intel->batch);
 280
 281    /* XXX: Need to do an MI_FLUSH here.
 282     */
 283 }
 284
 285
 286 /**
 287  * Check if we need to rotate/warp the front color buffer to the
 288  * rotated screen.  We generally need to do this when we get a glFlush
 289  * or glFinish after drawing to the front color buffer.
 290  */
 291 static void
 292 intelCheckFrontRotate(GLcontext * ctx)
 293 {
 294    struct intel_context *intel = intel_context(ctx);
 295    if (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] ==
 296        BUFFER_BIT_FRONT_LEFT) {
 297       intelScreenPrivate *screen = intel->intelScreen;
 298       if (screen->current_rotation != 0) {
 299          __DRIdrawablePrivate *dPriv = intel->driDrawable;
 300          intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT);
 301       }
 302    }
 303 }
 304
 305
 306 /**
 307  * Called via glFlush.
 308  */
 309 static void
 310 intelglFlush(GLcontext * ctx)
 311 {
 312    intelFlush(ctx);
 313    intelCheckFrontRotate(ctx);
 314 }
 315
 316 void
 317 intelFinish(GLcontext * ctx)
 318 {
 319    struct intel_context *intel = intel_context(ctx);
 320    intelFlush(ctx);
 321    if (intel->batch->last_fence) {
 322       dri_fence_wait(intel->batch->last_fence);
 323       dri_fence_unreference(intel->batch->last_fence);
 324       intel->batch->last_fence = NULL;
 325    }
 326    intelCheckFrontRotate(ctx);
 327 }
 328
 329
 330 void
 331 intelInitDriverFunctions(struct dd_function_table *functions)
 332 {
 333    _mesa_init_driver_functions(functions);
 334
 335    functions->Flush = intelglFlush;
 336    functions->Finish = intelFinish;
 337    functions->GetString = intelGetString;
 338    functions->UpdateState = intelInvalidateState;
 339    functions->CopyColorTable = _swrast_CopyColorTable;
 340    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 341    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 342    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 343
 344    intelInitTextureFuncs(functions);
 345    intelInitPixelFuncs(functions);
 346    intelInitStateFuncs(functions);
 347    intelInitBufferFuncs(functions);
 348 }
 349
 350
 351 GLboolean
 352 intelInitContext(struct intel_context *intel,
 353                  const __GLcontextModes * mesaVis,
 354                  __DRIcontextPrivate * driContextPriv,
 355                  void *sharedContextPrivate,
 356                  struct dd_function_table *functions)
 357 {
 358    GLcontext *ctx = &intel->ctx;
 359    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 360    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 361    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 362    drmI830Sarea *saPriv = (drmI830Sarea *)
 363       (((GLubyte *) sPriv->pSAREA) + intelScreen->sarea_priv_offset);
 364    int fthrottle_mode;
 365
 366    if (!_mesa_initialize_context(&intel->ctx,
 367                                  mesaVis, shareCtx,
 368                                  functions, (void *) intel))
 369       return GL_FALSE;
 370
 371    driContextPriv->driverPrivate = intel;
 372    intel->intelScreen = intelScreen;
 373    intel->driScreen = sPriv;
 374    intel->sarea = saPriv;
 375
 376    intel->width = intelScreen->width;
 377    intel->height = intelScreen->height;
 378    intel->current_rotation = intelScreen->current_rotation;
 379
 380    if (!lockMutexInit) {
 381       lockMutexInit = GL_TRUE;
 382       _glthread_INIT_MUTEX(lockMutex);
 383    }
 384
 385    driParseConfigFiles(&intel->optionCache, &intelScreen->optionCache,
 386                        intel->driScreen->myNum, "i915");
 387
 388    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 389
 390    /* This doesn't yet catch all non-conformant rendering, but it's a
 391     * start.
 392     */
 393    if (getenv("INTEL_STRICT_CONFORMANCE")) {
 394       intel->strict_conformance = 1;
 395    }
 396
 397    ctx->Const.MinLineWidth = 1.0;
 398    ctx->Const.MinLineWidthAA = 1.0;
 399    ctx->Const.MaxLineWidth = 3.0;
 400    ctx->Const.MaxLineWidthAA = 3.0;
 401    ctx->Const.LineWidthGranularity = 1.0;
 402
 403    ctx->Const.MinPointSize = 1.0;
 404    ctx->Const.MinPointSizeAA = 1.0;
 405    ctx->Const.MaxPointSize = 255.0;
 406    ctx->Const.MaxPointSizeAA = 3.0;
 407    ctx->Const.PointSizeGranularity = 1.0;
 408
 409    /* reinitialize the context point state.
 410     * It depend on constants in __GLcontextRec::Const
 411     */
 412    _mesa_init_point(ctx);
 413
 414    ctx->Const.MaxColorAttachments = 4;  /* XXX FBO: review this */
 415
 416    /* Initialize the software rasterizer and helper modules. */
 417    _swrast_CreateContext(ctx);
 418    _vbo_CreateContext(ctx);
 419    _tnl_CreateContext(ctx);
 420    _swsetup_CreateContext(ctx);
 421
 422    /* Install the customized pipeline: */
 423    _tnl_destroy_pipeline(ctx);
 424    _tnl_install_pipeline(ctx, intel_pipeline);
 425
 426    /* Configure swrast to match hardware characteristics: */
 427    _swrast_allow_pixel_fog(ctx, GL_FALSE);
 428    _swrast_allow_vertex_fog(ctx, GL_TRUE);
 429
 430    /* Dri stuff */
 431    intel->hHWContext = driContextPriv->hHWContext;
 432    intel->driFd = sPriv->fd;
 433    intel->driHwLock = (drmLock *) & sPriv->pSAREA->lock;
 434
 435    intel->hw_stipple = 1;
 436
 437    /* XXX FBO: this doesn't seem to be used anywhere */
 438    switch (mesaVis->depthBits) {
 439    case 0:                     /* what to do in this case? */
 440    case 16:
 441       intel->polygon_offset_scale = 1.0 / 0xffff;
 442       break;
 443    case 24:
 444       intel->polygon_offset_scale = 2.0 / 0xffffff;     /* req'd to pass glean */
 445       break;
 446    default:
 447       assert(0);
 448       break;
 449    }
 450
 451    /* Initialize swrast, tnl driver tables: */
 452    intelInitSpanFuncs(ctx);
 453    intelInitTriFuncs(ctx);
 454
 455
 456    intel->RenderIndex = ~0;
 457
 458    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 459    intel->irqsEmitted = 0;
 460
 461    intel->do_irqs = (intel->intelScreen->irq_active &&
 462                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 463
 464    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 465
 466    _math_matrix_ctr(&intel->ViewportMatrix);
 467
 468    /* Disable imaging extension until convolution is working in
 469     * teximage paths:
 470     */
 471    driInitExtensions(ctx, card_extensions,
 472 /*                    GL_TRUE, */
 473                      GL_FALSE);
 474
 475    if (intelScreen->ttm)
 476       driInitExtensions(ctx, ttm_extensions, GL_FALSE);
 477
 478
 479    intel->batch = intel_batchbuffer_alloc(intel);
 480    intel->last_swap_fence = NULL;
 481    intel->first_swap_fence = NULL;
 482
 483    intel_bufferobj_init(intel);
 484    intel_fbo_init(intel);
 485
 486    if (intel->ctx.Mesa_DXTn) {
 487       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 488       _mesa_enable_extension(ctx, "GL_S3_s3tc");
 489    }
 490    else if (driQueryOptionb(&intel->optionCache, "force_s3tc_enable")) {
 491       _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
 492    }
 493
 494    intel->prim.primitive = ~0;
 495
 496
 497 #if DO_DEBUG
 498    INTEL_DEBUG = driParseDebugString(getenv("INTEL_DEBUG"), debug_control);
 499 #endif
 500
 501    if (getenv("INTEL_NO_RAST")) {
 502       fprintf(stderr, "disabling 3D rasterization\n");
 503       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 504    }
 505
 506    return GL_TRUE;
 507 }
 508
 509 void
 510 intelDestroyContext(__DRIcontextPrivate * driContextPriv)
 511 {
 512    struct intel_context *intel =
 513       (struct intel_context *) driContextPriv->driverPrivate;
 514
 515    assert(intel);               /* should never be null */
 516    if (intel) {
 517       GLboolean release_texture_heaps;
 518
 519       INTEL_FIREVERTICES(intel);
 520
 521       intel->vtbl.destroy(intel);
 522
 523       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 524       _swsetup_DestroyContext(&intel->ctx);
 525       _tnl_DestroyContext(&intel->ctx);
 526       _vbo_DestroyContext(&intel->ctx);
 527
 528       _swrast_DestroyContext(&intel->ctx);
 529       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 530
 531       intel_batchbuffer_free(intel->batch);
 532
 533       if (intel->last_swap_fence) {
 534          dri_fence_wait(intel->last_swap_fence);
 535          dri_fence_unreference(intel->last_swap_fence);
 536          intel->last_swap_fence = NULL;
 537       }
 538       if (intel->first_swap_fence) {
 539          dri_fence_wait(intel->first_swap_fence);
 540          dri_fence_unreference(intel->first_swap_fence);
 541          intel->first_swap_fence = NULL;
 542       }
 543
 544
 545       if (release_texture_heaps) {
 546          /* This share group is about to go away, free our private
 547           * texture object data.
 548           */
 549          if (INTEL_DEBUG & DEBUG_TEXTURE)
 550             fprintf(stderr, "do something to free texture heaps\n");
 551       }
 552
 553       /* free the Mesa context */
 554       _mesa_free_context_data(&intel->ctx);
 555    }
 556 }
 557
 558 GLboolean
 559 intelUnbindContext(__DRIcontextPrivate * driContextPriv)
 560 {
 561    return GL_TRUE;
 562 }
 563
 564 GLboolean
 565 intelMakeCurrent(__DRIcontextPrivate * driContextPriv,
 566                  __DRIdrawablePrivate * driDrawPriv,
 567                  __DRIdrawablePrivate * driReadPriv)
 568 {
 569
 570    if (driContextPriv) {
 571       struct intel_context *intel =
 572          (struct intel_context *) driContextPriv->driverPrivate;
 573       struct intel_framebuffer *intel_fb =
 574          (struct intel_framebuffer *) driDrawPriv->driverPrivate;
 575       GLframebuffer *readFb = (GLframebuffer *) driReadPriv->driverPrivate;
 576
 577
 578       /* XXX FBO temporary fix-ups! */
 579       /* if the renderbuffers don't have regions, init them from the context */
 580       {
 581          struct intel_renderbuffer *irbDepth
 582             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_DEPTH);
 583          struct intel_renderbuffer *irbStencil
 584             = intel_get_renderbuffer(&intel_fb->Base, BUFFER_STENCIL);
 585
 586          if (intel_fb->color_rb[0] && !intel_fb->color_rb[0]->region) {
 587             intel_region_reference(&intel_fb->color_rb[0]->region,
 588                                    intel->intelScreen->front_region);
 589          }
 590          if (intel_fb->color_rb[1] && !intel_fb->color_rb[1]->region) {
 591             intel_region_reference(&intel_fb->color_rb[1]->region,
 592                                    intel->intelScreen->back_region);
 593          }
 594          if (intel_fb->color_rb[2] && !intel_fb->color_rb[2]->region) {
 595             intel_region_reference(&intel_fb->color_rb[2]->region,
 596                                    intel->intelScreen->third_region);
 597          }
 598          if (irbDepth && !irbDepth->region) {
 599             intel_region_reference(&irbDepth->region, intel->intelScreen->depth_region);
 600          }
 601          if (irbStencil && !irbStencil->region) {
 602             intel_region_reference(&irbStencil->region, intel->intelScreen->depth_region);
 603          }
 604       }
 605
 606       /* set GLframebuffer size to match window, if needed */
 607       driUpdateFramebufferSize(&intel->ctx, driDrawPriv);
 608
 609       if (driReadPriv != driDrawPriv) {
 610          driUpdateFramebufferSize(&intel->ctx, driReadPriv);
 611       }
 612
 613       _mesa_make_current(&intel->ctx, &intel_fb->Base, readFb);
 614
 615       /* The drawbuffer won't always be updated by _mesa_make_current:
 616        */
 617       if (intel->ctx.DrawBuffer == &intel_fb->Base) {
 618
 619          if (intel->driDrawable != driDrawPriv) {
 620             intel_fb->vblank_flags = (intel->intelScreen->irq_active != 0)
 621                ? driGetDefaultVBlankFlags(&intel->optionCache)
 622                : VBLANK_FLAG_NO_IRQ;
 623             (*dri_interface->getUST) (&intel_fb->swap_ust);
 624             driDrawableInitVBlank(driDrawPriv, intel_fb->vblank_flags,
 625                                   &intel_fb->vbl_seq);
 626             intel->driDrawable = driDrawPriv;
 627             intelWindowMoved(intel);
 628          }
 629
 630          intel_draw_buffer(&intel->ctx, &intel_fb->Base);
 631       }
 632    }
 633    else {
 634       _mesa_make_current(NULL, NULL, NULL);
 635    }
 636
 637    return GL_TRUE;
 638 }
 639
 640 static void
 641 intelContendedLock(struct intel_context *intel, GLuint flags)
 642 {
 643    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 644    __DRIscreenPrivate *sPriv = intel->driScreen;
 645    intelScreenPrivate *intelScreen = (intelScreenPrivate *) sPriv->private;
 646    drmI830Sarea *sarea = intel->sarea;
 647
 648    drmGetLock(intel->driFd, intel->hHWContext, flags);
 649
 650    if (INTEL_DEBUG & DEBUG_LOCK)
 651       _mesa_printf("%s - got contended lock\n", __progname);
 652
 653    /* If the window moved, may need to set a new cliprect now.
 654     *
 655     * NOTE: This releases and regains the hw lock, so all state
 656     * checking must be done *after* this call:
 657     */
 658    if (dPriv)
 659       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 660
 661    /* If the last consumer of the texture memory wasn't us, notify the fake
 662     * bufmgr and record the new owner.  We should have the memory shared
 663     * between contexts of a single fake bufmgr, but this will at least make
 664     * things correct for now.
 665     */
 666    if (!intel->intelScreen->ttm && sarea->texAge != intel->hHWContext) {
 667       sarea->texAge = intel->hHWContext;
 668       dri_bufmgr_fake_contended_lock_take(intel->intelScreen->bufmgr);
 669       if (INTEL_DEBUG & DEBUG_BATCH)
 670          i915_disasm_context_reset();
 671    }
 672
 673    if (sarea->width != intelScreen->width ||
 674        sarea->height != intelScreen->height ||
 675        sarea->rotation != intelScreen->current_rotation) {
 676
 677       intelUpdateScreenRotation(sPriv, sarea);
 678    }
 679
 680    if (sarea->width != intel->width ||
 681        sarea->height != intel->height ||
 682        sarea->rotation != intel->current_rotation) {
 683
 684       void *batchMap = intel->batch->map;
 685
 686       /*
 687        * FIXME: Really only need to do this when drawing to a
 688        * common back- or front buffer.
 689        */
 690
 691       /*
 692        * This will drop the outstanding batchbuffer on the floor
 693        */
 694
 695       if (batchMap != NULL) {
 696          dri_bo_unmap(intel->batch->buf);
 697          intel->batch->map = NULL;
 698       }
 699
 700       intel_batchbuffer_reset(intel->batch);
 701
 702       if (batchMap == NULL) {
 703          dri_bo_unmap(intel->batch->buf);
 704          intel->batch->map = NULL;
 705       }
 706
 707       /* lose all primitives */
 708       intel->prim.primitive = ~0;
 709       intel->prim.start_ptr = 0;
 710       intel->prim.flush = 0;
 711
 712       /* re-emit all state */
 713       intel->vtbl.lost_hardware(intel);
 714
 715       /* force window update */
 716       intel->lastStamp = 0;
 717
 718       intel->width = sarea->width;
 719       intel->height = sarea->height;
 720       intel->current_rotation = sarea->rotation;
 721    }
 722
 723    /* Drawable changed?
 724     */
 725    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 726       intelWindowMoved(intel);
 727       intel->lastStamp = dPriv->lastStamp;
 728    }
 729 }
 730
 731
 732
 733 /* Lock the hardware and validate our state.
 734  */
 735 void LOCK_HARDWARE( struct intel_context *intel )
 736 {
 737     char __ret=0;
 738     struct intel_framebuffer *intel_fb = NULL;
 739     struct intel_renderbuffer *intel_rb = NULL;
 740     _glthread_LOCK_MUTEX(lockMutex);
 741     assert(!intel->locked);
 742
 743     if (intel->driDrawable) {
 744        intel_fb = intel->driDrawable->driverPrivate;
 745
 746        if (intel_fb)
 747           intel_rb =
 748              intel_get_renderbuffer(&intel_fb->Base,
 749                                     intel_fb->Base._ColorDrawBufferMask[0] ==
 750                                     BUFFER_BIT_FRONT_LEFT ? BUFFER_FRONT_LEFT :
 751                                     BUFFER_BACK_LEFT);
 752     }
 753
 754     if (intel_rb && (intel_fb->vbl_waited - intel_rb->vbl_pending) > (1<<23)) {
 755         drmVBlank vbl;
 756
 757         vbl.request.type = DRM_VBLANK_ABSOLUTE;
 758
 759         if ( intel_fb->vblank_flags & VBLANK_FLAG_SECONDARY ) {
 760             vbl.request.type |= DRM_VBLANK_SECONDARY;
 761         }
 762
 763         vbl.request.sequence = intel_rb->vbl_pending;
 764         drmWaitVBlank(intel->driFd, &vbl);
 765         intel_fb->vbl_waited = vbl.reply.sequence;
 766     }
 767
 768     DRM_CAS(intel->driHwLock, intel->hHWContext,
 769         (DRM_LOCK_HELD|intel->hHWContext), __ret);
 770
 771     if (__ret)
 772         intelContendedLock( intel, 0 );
 773
 774     if (INTEL_DEBUG & DEBUG_LOCK)
 775       _mesa_printf("%s - locked\n", __progname);
 776
 777     intel->locked = 1;
 778 }
 779
 780
 781   /* Unlock the hardware using the global current context
 782    */
 783 void UNLOCK_HARDWARE( struct intel_context *intel )
 784 {
 785    intel->locked = 0;
 786
 787    DRM_UNLOCK(intel->driFd, intel->driHwLock, intel->hHWContext);
 788
 789    _glthread_UNLOCK_MUTEX(lockMutex);
 790
 791    if (INTEL_DEBUG & DEBUG_LOCK)
 792       _mesa_printf("%s - unlocked\n", __progname);
 793 }
 794