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