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
  37 #include "swrast/swrast.h"
  38 #include "swrast_setup/swrast_setup.h"
  39 #include "tnl/tnl.h"
  40 #include "array_cache/acache.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 #include "i830_common.h"
  51
  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
  58 #include "vblank.h"
  59 #include "utils.h"
  60 #include "xmlpool.h" /* for symbolic values of enum-type options */
  61 #ifndef INTEL_DEBUG
  62 int INTEL_DEBUG = (0);
  63 #endif
  64
  65 #define need_GL_ARB_multisample
  66 #define need_GL_ARB_point_parameters
  67 #define need_GL_ARB_texture_compression
  68 #define need_GL_ARB_vertex_buffer_object
  69 #define need_GL_ARB_vertex_program
  70 #define need_GL_ARB_window_pos
  71 #define need_GL_EXT_blend_color
  72 #define need_GL_EXT_blend_equation_separate
  73 #define need_GL_EXT_blend_func_separate
  74 #define need_GL_EXT_blend_minmax
  75 #define need_GL_EXT_cull_vertex
  76 #define need_GL_EXT_fog_coord
  77 #define need_GL_EXT_multi_draw_arrays
  78 #define need_GL_EXT_secondary_color
  79 #define need_GL_NV_vertex_program
  80 #include "extension_helper.h"
  81
  82 #ifndef VERBOSE
  83 int VERBOSE = 0;
  84 #endif
  85
  86 #if DEBUG_LOCKING
  87 char *prevLockFile;
  88 int prevLockLine;
  89 #endif
  90
  91 /***************************************
  92  * Mesa's Driver Functions
  93  ***************************************/
  94
  95 #define DRIVER_DATE                     "20050225"
  96
  97 const GLubyte *intelGetString( GLcontext *ctx, GLenum name )
  98 {
  99    const char * chipset;
 100    static char buffer[128];
 101
 102    switch (name) {
 103    case GL_VENDOR:
 104       return (GLubyte *)"Tungsten Graphics, Inc";
 105       break;
 106
 107    case GL_RENDERER:
 108       switch (INTEL_CONTEXT(ctx)->intelScreen->deviceID) {
 109       case PCI_CHIP_845_G:
 110          chipset = "Intel(R) 845G"; break;
 111       case PCI_CHIP_I830_M:
 112          chipset = "Intel(R) 830M"; break;
 113       case PCI_CHIP_I855_GM:
 114          chipset = "Intel(R) 852GM/855GM"; break;
 115       case PCI_CHIP_I865_G:
 116          chipset = "Intel(R) 865G"; break;
 117       case PCI_CHIP_I915_G:
 118          chipset = "Intel(R) 915G"; break;
 119       case PCI_CHIP_I915_GM:
 120          chipset = "Intel(R) 915GM"; break;
 121       case PCI_CHIP_I945_G:
 122          chipset = "Intel(R) 945G"; break;
 123       case PCI_CHIP_I945_GM:
 124          chipset = "Intel(R) 945GM"; break;
 125       default:
 126          chipset = "Unknown Intel Chipset"; break;
 127       }
 128
 129       (void) driGetRendererString( buffer, chipset, DRIVER_DATE, 0 );
 130       return (GLubyte *) buffer;
 131
 132    default:
 133       return NULL;
 134    }
 135 }
 136
 137 static void intelBufferSize(GLframebuffer *buffer,
 138                            GLuint *width, GLuint *height)
 139 {
 140    GET_CURRENT_CONTEXT(ctx);
 141    intelContextPtr intel = INTEL_CONTEXT(ctx);
 142    /* Need to lock to make sure the driDrawable is uptodate.  This
 143     * information is used to resize Mesa's software buffers, so it has
 144     * to be correct.
 145     */
 146    LOCK_HARDWARE(intel);
 147    if (intel->driDrawable) {
 148       *width = intel->driDrawable->w;
 149       *height = intel->driDrawable->h;
 150    }
 151    else {
 152       *width = 0;
 153       *height = 0;
 154    }
 155    UNLOCK_HARDWARE(intel);
 156 }
 157
 158
 159 /**
 160  * Extension strings exported by the intel driver.
 161  *
 162  * \note
 163  * It appears that ARB_texture_env_crossbar has "disappeared" compared to the
 164  * old i830-specific driver.
 165  */
 166 const struct dri_extension card_extensions[] =
 167 {
 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",    GL_EXT_blend_equation_separate_functions },
 184     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 185     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 186     { "GL_EXT_blend_subtract",             NULL },
 187     { "GL_EXT_cull_vertex",                GL_EXT_cull_vertex_functions },
 188     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 189     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 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 extern const struct tnl_pipeline_stage _intel_render_stage;
 209
 210 static const struct tnl_pipeline_stage *intel_pipeline[] = {
 211    &_tnl_vertex_transform_stage,
 212    &_tnl_vertex_cull_stage,
 213    &_tnl_normal_transform_stage,
 214    &_tnl_lighting_stage,
 215    &_tnl_fog_coordinate_stage,
 216    &_tnl_texgen_stage,
 217    &_tnl_texture_transform_stage,
 218    &_tnl_point_attenuation_stage,
 219    &_tnl_arb_vertex_program_stage,
 220    &_tnl_vertex_program_stage,
 221 #if 1
 222    &_intel_render_stage,     /* ADD: unclipped rastersetup-to-dma */
 223 #endif
 224    &_tnl_render_stage,
 225    0,
 226 };
 227
 228
 229 static const struct dri_debug_control debug_control[] =
 230 {
 231     { "fall",  DEBUG_FALLBACKS },
 232     { "tex",   DEBUG_TEXTURE },
 233     { "ioctl", DEBUG_IOCTL },
 234     { "prim",  DEBUG_PRIMS },
 235     { "vert",  DEBUG_VERTS },
 236     { "state", DEBUG_STATE },
 237     { "verb",  DEBUG_VERBOSE },
 238     { "dri",   DEBUG_DRI },
 239     { "dma",   DEBUG_DMA },
 240     { "san",   DEBUG_SANITY },
 241     { "sync",  DEBUG_SYNC },
 242     { "sleep", DEBUG_SLEEP },
 243     { "pix",   DEBUG_PIXEL },
 244     { NULL,    0 }
 245 };
 246
 247
 248 static void intelInvalidateState( GLcontext *ctx, GLuint new_state )
 249 {
 250    _swrast_InvalidateState( ctx, new_state );
 251    _swsetup_InvalidateState( ctx, new_state );
 252    _ac_InvalidateState( ctx, new_state );
 253    _tnl_InvalidateState( ctx, new_state );
 254    _tnl_invalidate_vertex_state( ctx, new_state );
 255    INTEL_CONTEXT(ctx)->NewGLState |= new_state;
 256 }
 257
 258
 259 void intelInitDriverFunctions( struct dd_function_table *functions )
 260 {
 261    _mesa_init_driver_functions( functions );
 262
 263    functions->Clear = intelClear;
 264    functions->Flush = intelglFlush;
 265    functions->Finish = intelFinish;
 266    functions->GetBufferSize = intelBufferSize;
 267    functions->ResizeBuffers = _mesa_resize_framebuffer;
 268    functions->GetString = intelGetString;
 269    functions->UpdateState = intelInvalidateState;
 270    functions->CopyColorTable = _swrast_CopyColorTable;
 271    functions->CopyColorSubTable = _swrast_CopyColorSubTable;
 272    functions->CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
 273    functions->CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
 274
 275    intelInitTextureFuncs( functions );
 276    intelInitPixelFuncs( functions );
 277    intelInitStateFuncs( functions );
 278 }
 279
 280 static void intel_emit_invarient_state( GLcontext *ctx )
 281 {
 282    intelContextPtr intel = INTEL_CONTEXT(ctx);
 283
 284    intel->vtbl.emit_invarient_state( intel );
 285    intel->prim.flush = 0;
 286
 287    /* Make sure this gets to the hardware, even if we have no cliprects:
 288     */
 289    LOCK_HARDWARE( intel );
 290    intelFlushBatchLocked( intel, GL_TRUE, GL_FALSE, GL_TRUE );
 291    UNLOCK_HARDWARE( intel );
 292 }
 293
 294
 295
 296 GLboolean intelInitContext( intelContextPtr intel,
 297                             const __GLcontextModes *mesaVis,
 298                             __DRIcontextPrivate *driContextPriv,
 299                             void *sharedContextPrivate,
 300                             struct dd_function_table *functions )
 301 {
 302    GLcontext *ctx = &intel->ctx;
 303    GLcontext *shareCtx = (GLcontext *) sharedContextPrivate;
 304    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 305    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 306    drmI830Sarea *saPriv = (drmI830Sarea *)
 307       (((GLubyte *)sPriv->pSAREA)+intelScreen->sarea_priv_offset);
 308    int fthrottle_mode;
 309
 310    if (!_mesa_initialize_context(&intel->ctx,
 311                                  mesaVis, shareCtx,
 312                                  functions,
 313                                  (void*) intel))
 314       return GL_FALSE;
 315
 316    driContextPriv->driverPrivate = intel;
 317    intel->intelScreen = intelScreen;
 318    intel->driScreen = sPriv;
 319    intel->sarea = saPriv;
 320
 321
 322    (void) memset( intel->texture_heaps, 0, sizeof( intel->texture_heaps ) );
 323    make_empty_list( & intel->swapped );
 324
 325    driParseConfigFiles (&intel->optionCache, &intelScreen->optionCache,
 326                         intel->driScreen->myNum, "i915");
 327
 328    ctx->Const.MaxTextureMaxAnisotropy = 2.0;
 329
 330    ctx->Const.MinLineWidth = 1.0;
 331    ctx->Const.MinLineWidthAA = 1.0;
 332    ctx->Const.MaxLineWidth = 3.0;
 333    ctx->Const.MaxLineWidthAA = 3.0;
 334    ctx->Const.LineWidthGranularity = 1.0;
 335
 336    ctx->Const.MinPointSize = 1.0;
 337    ctx->Const.MinPointSizeAA = 1.0;
 338    ctx->Const.MaxPointSize = 255.0;
 339    ctx->Const.MaxPointSizeAA = 3.0;
 340    ctx->Const.PointSizeGranularity = 1.0;
 341
 342    /* Initialize the software rasterizer and helper modules. */
 343    _swrast_CreateContext( ctx );
 344    _ac_CreateContext( ctx );
 345    _tnl_CreateContext( ctx );
 346    _swsetup_CreateContext( ctx );
 347
 348    /* Install the customized pipeline: */
 349    _tnl_destroy_pipeline( ctx );
 350    _tnl_install_pipeline( ctx, intel_pipeline );
 351
 352    /* Configure swrast to match hardware characteristics: */
 353    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 354    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 355
 356    /* Dri stuff */
 357    intel->hHWContext = driContextPriv->hHWContext;
 358    intel->driFd = sPriv->fd;
 359    intel->driHwLock = (drmLock *) &sPriv->pSAREA->lock;
 360
 361    intel->hw_stencil = mesaVis->stencilBits && mesaVis->depthBits == 24;
 362    intel->hw_stipple = 1;
 363
 364    switch(mesaVis->depthBits) {
 365    case 0:                      /* what to do in this case? */
 366    case 16:
 367       intel->depth_scale = 1.0/0xffff;
 368       intel->polygon_offset_scale = 1.0/0xffff;
 369       intel->depth_clear_mask = ~0;
 370       intel->ClearDepth = 0xffff;
 371       break;
 372    case 24:
 373       intel->depth_scale = 1.0/0xffffff;
 374       intel->polygon_offset_scale = 2.0/0xffffff; /* req'd to pass glean */
 375       intel->depth_clear_mask = 0x00ffffff;
 376       intel->stencil_clear_mask = 0xff000000;
 377       intel->ClearDepth = 0x00ffffff;
 378       break;
 379    default:
 380       assert(0);
 381       break;
 382    }
 383
 384    /* Initialize swrast, tnl driver tables: */
 385    intelInitSpanFuncs( ctx );
 386    intelInitTriFuncs( ctx );
 387
 388
 389    intel->RenderIndex = ~0;
 390
 391    fthrottle_mode = driQueryOptioni(&intel->optionCache, "fthrottle_mode");
 392    intel->iw.irq_seq = -1;
 393    intel->irqsEmitted = 0;
 394
 395    intel->do_irqs = (intel->intelScreen->irq_active &&
 396                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 397
 398    intel->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 399
 400    intel->vblank_flags = (intel->intelScreen->irq_active != 0)
 401        ? driGetDefaultVBlankFlags(&intelScreen->optionCache) : VBLANK_FLAG_NO_IRQ;
 402
 403    (*dri_interface->getUST)(&intel->swap_ust);
 404    _math_matrix_ctr (&intel->ViewportMatrix);
 405
 406    driInitExtensions( ctx, card_extensions, GL_TRUE );
 407
 408    if (intel->ctx.Mesa_DXTn) {
 409      _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 410      _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 411    }
 412    else if (driQueryOptionb (&intelScreen->optionCache, "force_s3tc_enable")) {
 413      _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 414    }
 415
 416 /*    driInitTextureObjects( ctx, & intel->swapped, */
 417 /*                        DRI_TEXMGR_DO_TEXTURE_1D | */
 418 /*                        DRI_TEXMGR_DO_TEXTURE_2D |  */
 419 /*                        DRI_TEXMGR_DO_TEXTURE_RECT ); */
 420
 421
 422    intelInitBatchBuffer(&intel->ctx);
 423    intel->prim.flush = intel_emit_invarient_state;
 424    intel->prim.primitive = ~0;
 425
 426
 427 #if DO_DEBUG
 428    INTEL_DEBUG  = driParseDebugString( getenv( "INTEL_DEBUG" ),
 429                                        debug_control );
 430    INTEL_DEBUG |= driParseDebugString( getenv( "INTEL_DEBUG" ),
 431                                        debug_control );
 432 #endif
 433
 434 #ifndef VERBOSE
 435    if (getenv("INTEL_VERBOSE"))
 436       VERBOSE=1;
 437 #endif
 438
 439    if (getenv("INTEL_NO_RAST") ||
 440        getenv("INTEL_NO_RAST")) {
 441       fprintf(stderr, "disabling 3D rasterization\n");
 442       FALLBACK(intel, INTEL_FALLBACK_USER, 1);
 443    }
 444
 445    return GL_TRUE;
 446 }
 447
 448 void intelDestroyContext(__DRIcontextPrivate *driContextPriv)
 449 {
 450    intelContextPtr intel = (intelContextPtr) driContextPriv->driverPrivate;
 451
 452    assert(intel); /* should never be null */
 453    if (intel) {
 454       GLboolean   release_texture_heaps;
 455
 456
 457       intel->vtbl.destroy( intel );
 458
 459       release_texture_heaps = (intel->ctx.Shared->RefCount == 1);
 460       _swsetup_DestroyContext (&intel->ctx);
 461       _tnl_DestroyContext (&intel->ctx);
 462       _ac_DestroyContext (&intel->ctx);
 463
 464       _swrast_DestroyContext (&intel->ctx);
 465       intel->Fallback = 0;      /* don't call _swrast_Flush later */
 466
 467       intelDestroyBatchBuffer(&intel->ctx);
 468
 469
 470       if ( release_texture_heaps ) {
 471          /* This share group is about to go away, free our private
 472           * texture object data.
 473           */
 474          int i;
 475
 476          for ( i = 0 ; i < intel->nr_heaps ; i++ ) {
 477             driDestroyTextureHeap( intel->texture_heaps[ i ] );
 478             intel->texture_heaps[ i ] = NULL;
 479          }
 480
 481          assert( is_empty_list( & intel->swapped ) );
 482       }
 483
 484       /* free the Mesa context */
 485       _mesa_destroy_context(&intel->ctx);
 486    }
 487 }
 488
 489 void intelSetFrontClipRects( intelContextPtr intel )
 490 {
 491    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 492
 493    if (!dPriv) return;
 494
 495    intel->numClipRects = dPriv->numClipRects;
 496    intel->pClipRects = dPriv->pClipRects;
 497    intel->drawX = dPriv->x;
 498    intel->drawY = dPriv->y;
 499 }
 500
 501
 502 void intelSetBackClipRects( intelContextPtr intel )
 503 {
 504    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 505
 506    if (!dPriv) return;
 507
 508    if (intel->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0) {
 509       intel->numClipRects = dPriv->numClipRects;
 510       intel->pClipRects = dPriv->pClipRects;
 511       intel->drawX = dPriv->x;
 512       intel->drawY = dPriv->y;
 513    } else {
 514       intel->numClipRects = dPriv->numBackClipRects;
 515       intel->pClipRects = dPriv->pBackClipRects;
 516       intel->drawX = dPriv->backX;
 517       intel->drawY = dPriv->backY;
 518
 519       if (dPriv->numBackClipRects == 1 &&
 520           dPriv->x == dPriv->backX &&
 521           dPriv->y == dPriv->backY) {
 522
 523          /* Repeat the calculation of the back cliprect dimensions here
 524           * as early versions of dri.a in the Xserver are incorrect.  Try
 525           * very hard not to restrict future versions of dri.a which
 526           * might eg. allocate truly private back buffers.
 527           */
 528          int x1, y1;
 529          int x2, y2;
 530
 531          x1 = dPriv->x;
 532          y1 = dPriv->y;
 533          x2 = dPriv->x + dPriv->w;
 534          y2 = dPriv->y + dPriv->h;
 535
 536          if (x1 < 0) x1 = 0;
 537          if (y1 < 0) y1 = 0;
 538          if (x2 > intel->intelScreen->width) x2 = intel->intelScreen->width;
 539          if (y2 > intel->intelScreen->height) y2 = intel->intelScreen->height;
 540
 541          if (x1 == dPriv->pBackClipRects[0].x1 &&
 542              y1 == dPriv->pBackClipRects[0].y1) {
 543
 544             dPriv->pBackClipRects[0].x2 = x2;
 545             dPriv->pBackClipRects[0].y2 = y2;
 546          }
 547       }
 548    }
 549 }
 550
 551
 552 void intelWindowMoved( intelContextPtr intel )
 553 {
 554    if (!intel->ctx.DrawBuffer) {
 555       intelSetFrontClipRects( intel );
 556    }
 557    else {
 558       switch (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0]) {
 559       case BUFFER_BIT_FRONT_LEFT:
 560          intelSetFrontClipRects( intel );
 561          break;
 562       case BUFFER_BIT_BACK_LEFT:
 563          intelSetBackClipRects( intel );
 564          break;
 565       default:
 566          /* glDrawBuffer(GL_NONE or GL_FRONT_AND_BACK): software fallback */
 567          intelSetFrontClipRects( intel );
 568       }
 569    }
 570
 571    /* Set state we know depends on drawable parameters:
 572     */
 573    {
 574       GLcontext *ctx = &intel->ctx;
 575
 576       ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 577                            ctx->Scissor.Width, ctx->Scissor.Height );
 578
 579       ctx->Driver.DepthRange( ctx,
 580                               ctx->Viewport.Near,
 581                               ctx->Viewport.Far );
 582    }
 583 }
 584
 585 GLboolean intelUnbindContext(__DRIcontextPrivate *driContextPriv)
 586 {
 587    return GL_TRUE;
 588 }
 589
 590 GLboolean intelMakeCurrent(__DRIcontextPrivate *driContextPriv,
 591                           __DRIdrawablePrivate *driDrawPriv,
 592                           __DRIdrawablePrivate *driReadPriv)
 593 {
 594
 595    if (driContextPriv) {
 596       intelContextPtr intel = (intelContextPtr) driContextPriv->driverPrivate;
 597
 598       if ( intel->driDrawable != driDrawPriv ) {
 599          /* Shouldn't the readbuffer be stored also? */
 600          driDrawableInitVBlank( driDrawPriv, intel->vblank_flags );
 601
 602          intel->driDrawable = driDrawPriv;
 603          intelWindowMoved( intel );
 604       }
 605
 606       _mesa_make_current(&intel->ctx,
 607                          (GLframebuffer *) driDrawPriv->driverPrivate,
 608                          (GLframebuffer *) driReadPriv->driverPrivate);
 609
 610       intel->ctx.Driver.DrawBuffer( &intel->ctx, intel->ctx.Color.DrawBuffer[0] );
 611    } else {
 612       _mesa_make_current(NULL, NULL, NULL);
 613    }
 614
 615    return GL_TRUE;
 616 }
 617
 618 /**
 619  * Use the information in the sarea to update the screen parameters
 620  * related to screen rotation.
 621  */
 622 static void
 623 intelUpdateScreenRotation(intelContextPtr intel,
 624                           __DRIscreenPrivate *sPriv,
 625                           drmI830Sarea *sarea)
 626 {
 627    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 628    intelRegion *colorBuf;
 629
 630    intelUnmapScreenRegions(intelScreen);
 631
 632    intelUpdateScreenFromSAREA(intelScreen, sarea);
 633
 634    /* update the current hw offsets for the color and depth buffers */
 635    if (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0] == BUFFER_BIT_BACK_LEFT)
 636       colorBuf = &intelScreen->back;
 637    else
 638       colorBuf = &intelScreen->front;
 639    intel->vtbl.update_color_z_regions(intel, colorBuf, &intelScreen->depth);
 640
 641    if (!intelMapScreenRegions(sPriv)) {
 642       fprintf(stderr, "ERROR Remapping screen regions!!!\n");
 643    }
 644 }
 645
 646 void intelGetLock( intelContextPtr intel, GLuint flags )
 647 {
 648    __DRIdrawablePrivate *dPriv = intel->driDrawable;
 649    __DRIscreenPrivate *sPriv = intel->driScreen;
 650    intelScreenPrivate *intelScreen = (intelScreenPrivate *)sPriv->private;
 651    drmI830Sarea * sarea = intel->sarea;
 652    unsigned   i;
 653
 654    drmGetLock(intel->driFd, intel->hHWContext, flags);
 655
 656    /* If the window moved, may need to set a new cliprect now.
 657     *
 658     * NOTE: This releases and regains the hw lock, so all state
 659     * checking must be done *after* this call:
 660     */
 661    if (dPriv)
 662       DRI_VALIDATE_DRAWABLE_INFO(sPriv, dPriv);
 663
 664    if (dPriv && intel->lastStamp != dPriv->lastStamp) {
 665       intelWindowMoved( intel );
 666       intel->lastStamp = dPriv->lastStamp;
 667    }
 668
 669    /* If we lost context, need to dump all registers to hardware.
 670     * Note that we don't care about 2d contexts, even if they perform
 671     * accelerated commands, so the DRI locking in the X server is even
 672     * more broken than usual.
 673     */
 674
 675    if (sarea->width != intelScreen->width ||
 676        sarea->height != intelScreen->height ||
 677        sarea->rotation != intelScreen->current_rotation) {
 678       intelUpdateScreenRotation(intel, sPriv, sarea);
 679
 680       /* This will drop the outstanding batchbuffer on the floor */
 681       intel->batch.ptr -= (intel->batch.size - intel->batch.space);
 682       intel->batch.space = intel->batch.size;
 683       /* lose all primitives */
 684       intel->prim.primitive = ~0;
 685       intel->prim.start_ptr = 0;
 686       intel->prim.flush = 0;
 687       intel->vtbl.lost_hardware( intel );
 688
 689       intel->lastStamp = 0; /* force window update */
 690
 691       /* Release batch buffer
 692        */
 693       intelDestroyBatchBuffer(&intel->ctx);
 694       intelInitBatchBuffer(&intel->ctx);
 695       intel->prim.flush = intel_emit_invarient_state;
 696
 697       /* Still need to reset the global LRU?
 698        */
 699       intel_driReinitTextureHeap( intel->texture_heaps[0], intel->intelScreen->tex.size );
 700    }
 701
 702    /* Shared texture managment - if another client has played with
 703     * texture space, figure out which if any of our textures have been
 704     * ejected, and update our global LRU.
 705     */
 706    for ( i = 0 ; i < intel->nr_heaps ; i++ ) {
 707       DRI_AGE_TEXTURES( intel->texture_heaps[ i ] );
 708    }
 709 }
 710
 711
 712 void intelSwapBuffers( __DRIdrawablePrivate *dPriv )
 713 {
 714    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 715       intelContextPtr intel;
 716       GLcontext *ctx;
 717       intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;
 718       ctx = &intel->ctx;
 719       if (ctx->Visual.doubleBufferMode) {
 720          intelScreenPrivate *screen = intel->intelScreen;
 721          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 722          if ( 0 /*intel->doPageFlip*/ ) { /* doPageFlip is never set !!! */
 723             intelPageFlip( dPriv );
 724          } else {
 725              intelCopyBuffer( dPriv, NULL );
 726          }
 727          if (screen->current_rotation != 0) {
 728             intelRotateWindow(intel, dPriv, BUFFER_BIT_FRONT_LEFT);
 729          }
 730       }
 731    } else {
 732       /* XXX this shouldn't be an error but we can't handle it for now */
 733       fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
 734    }
 735 }
 736
 737 void intelCopySubBuffer( __DRIdrawablePrivate *dPriv,
 738                          int x, int y, int w, int h )
 739 {
 740    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 741       intelContextPtr intel;
 742       GLcontext *ctx;
 743       intel = (intelContextPtr) dPriv->driContextPriv->driverPrivate;
 744       ctx = &intel->ctx;
 745       if (ctx->Visual.doubleBufferMode) {
 746          intelScreenPrivate *screen = intel->intelScreen;
 747          drm_clip_rect_t rect;
 748          rect.x1 = x + dPriv->x;
 749          rect.y1 = (dPriv->h - y - h) + dPriv->y;
 750          rect.x2 = rect.x1 + w;
 751          rect.y2 = rect.y1 + h;
 752          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 753          intelCopyBuffer( dPriv, &rect );
 754       }
 755    } else {
 756       /* XXX this shouldn't be an error but we can't handle it for now */
 757       fprintf(stderr, "%s: drawable has no context!\n", __FUNCTION__);
 758    }
 759 }
 760
 761 void intelInitState( GLcontext *ctx )
 762 {
 763    /* Mesa should do this for us:
 764     */
 765    ctx->Driver.AlphaFunc( ctx,
 766                           ctx->Color.AlphaFunc,
 767                           ctx->Color.AlphaRef);
 768
 769    ctx->Driver.BlendColor( ctx,
 770                            ctx->Color.BlendColor );
 771
 772    ctx->Driver.BlendEquationSeparate( ctx,
 773                                       ctx->Color.BlendEquationRGB,
 774                                       ctx->Color.BlendEquationA);
 775
 776    ctx->Driver.BlendFuncSeparate( ctx,
 777                                   ctx->Color.BlendSrcRGB,
 778                                   ctx->Color.BlendDstRGB,
 779                                   ctx->Color.BlendSrcA,
 780                                   ctx->Color.BlendDstA);
 781
 782    ctx->Driver.ColorMask( ctx,
 783                           ctx->Color.ColorMask[RCOMP],
 784                           ctx->Color.ColorMask[GCOMP],
 785                           ctx->Color.ColorMask[BCOMP],
 786                           ctx->Color.ColorMask[ACOMP]);
 787
 788    ctx->Driver.CullFace( ctx, ctx->Polygon.CullFaceMode );
 789    ctx->Driver.DepthFunc( ctx, ctx->Depth.Func );
 790    ctx->Driver.DepthMask( ctx, ctx->Depth.Mask );
 791
 792    ctx->Driver.Enable( ctx, GL_ALPHA_TEST, ctx->Color.AlphaEnabled );
 793    ctx->Driver.Enable( ctx, GL_BLEND, ctx->Color.BlendEnabled );
 794    ctx->Driver.Enable( ctx, GL_COLOR_LOGIC_OP, ctx->Color.ColorLogicOpEnabled );
 795    ctx->Driver.Enable( ctx, GL_COLOR_SUM, ctx->Fog.ColorSumEnabled );
 796    ctx->Driver.Enable( ctx, GL_CULL_FACE, ctx->Polygon.CullFlag );
 797    ctx->Driver.Enable( ctx, GL_DEPTH_TEST, ctx->Depth.Test );
 798    ctx->Driver.Enable( ctx, GL_DITHER, ctx->Color.DitherFlag );
 799    ctx->Driver.Enable( ctx, GL_FOG, ctx->Fog.Enabled );
 800    ctx->Driver.Enable( ctx, GL_LIGHTING, ctx->Light.Enabled );
 801    ctx->Driver.Enable( ctx, GL_LINE_SMOOTH, ctx->Line.SmoothFlag );
 802    ctx->Driver.Enable( ctx, GL_POLYGON_STIPPLE, ctx->Polygon.StippleFlag );
 803    ctx->Driver.Enable( ctx, GL_SCISSOR_TEST, ctx->Scissor.Enabled );
 804    ctx->Driver.Enable( ctx, GL_STENCIL_TEST, ctx->Stencil.Enabled );
 805    ctx->Driver.Enable( ctx, GL_TEXTURE_1D, GL_FALSE );
 806    ctx->Driver.Enable( ctx, GL_TEXTURE_2D, GL_FALSE );
 807    ctx->Driver.Enable( ctx, GL_TEXTURE_RECTANGLE_NV, GL_FALSE );
 808    ctx->Driver.Enable( ctx, GL_TEXTURE_3D, GL_FALSE );
 809    ctx->Driver.Enable( ctx, GL_TEXTURE_CUBE_MAP, GL_FALSE );
 810
 811    ctx->Driver.Fogfv( ctx, GL_FOG_COLOR, ctx->Fog.Color );
 812    ctx->Driver.Fogfv( ctx, GL_FOG_MODE, 0 );
 813    ctx->Driver.Fogfv( ctx, GL_FOG_DENSITY, &ctx->Fog.Density );
 814    ctx->Driver.Fogfv( ctx, GL_FOG_START, &ctx->Fog.Start );
 815    ctx->Driver.Fogfv( ctx, GL_FOG_END, &ctx->Fog.End );
 816
 817    ctx->Driver.FrontFace( ctx, ctx->Polygon.FrontFace );
 818
 819    {
 820       GLfloat f = (GLfloat)ctx->Light.Model.ColorControl;
 821       ctx->Driver.LightModelfv( ctx, GL_LIGHT_MODEL_COLOR_CONTROL, &f );
 822    }
 823
 824    ctx->Driver.LineWidth( ctx, ctx->Line.Width );
 825    ctx->Driver.LogicOpcode( ctx, ctx->Color.LogicOp );
 826    ctx->Driver.PointSize( ctx, ctx->Point.Size );
 827    ctx->Driver.PolygonStipple( ctx, (const GLubyte *)ctx->PolygonStipple );
 828    ctx->Driver.Scissor( ctx, ctx->Scissor.X, ctx->Scissor.Y,
 829                         ctx->Scissor.Width, ctx->Scissor.Height );
 830    ctx->Driver.ShadeModel( ctx, ctx->Light.ShadeModel );
 831    ctx->Driver.StencilFuncSeparate( ctx, GL_FRONT,
 832                                     ctx->Stencil.Function[0],
 833                                     ctx->Stencil.Ref[0],
 834                                     ctx->Stencil.ValueMask[0] );
 835    ctx->Driver.StencilFuncSeparate( ctx, GL_BACK,
 836                                     ctx->Stencil.Function[1],
 837                                     ctx->Stencil.Ref[1],
 838                                     ctx->Stencil.ValueMask[1] );
 839    ctx->Driver.StencilMaskSeparate( ctx, GL_FRONT, ctx->Stencil.WriteMask[0] );
 840    ctx->Driver.StencilMaskSeparate( ctx, GL_BACK, ctx->Stencil.WriteMask[1] );
 841    ctx->Driver.StencilOpSeparate( ctx, GL_FRONT,
 842                                   ctx->Stencil.FailFunc[0],
 843                                   ctx->Stencil.ZFailFunc[0],
 844                                   ctx->Stencil.ZPassFunc[0]);
 845    ctx->Driver.StencilOpSeparate( ctx, GL_BACK,
 846                                   ctx->Stencil.FailFunc[1],
 847                                   ctx->Stencil.ZFailFunc[1],
 848                                   ctx->Stencil.ZPassFunc[1]);
 849
 850
 851    ctx->Driver.DrawBuffer( ctx, ctx->Color.DrawBuffer[0] );
 852 }
 853
 854