src/mesa/drivers/dri/radeon/radeon_context.c

   1 /**************************************************************************
   2
   3 Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
   4                      VA Linux Systems Inc., Fremont, California.
   5
   6 All Rights Reserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /*
  31  * Authors:
  32  *   Kevin E. Martin <martin@valinux.com>
  33  *   Gareth Hughes <gareth@valinux.com>
  34  *   Keith Whitwell <keith@tungstengraphics.com>
  35  */
  36
  37 #include "main/glheader.h"
  38 #include "main/api_arrayelt.h"
  39 #include "main/context.h"
  40 #include "main/simple_list.h"
  41 #include "main/imports.h"
  42 #include "main/matrix.h"
  43 #include "main/extensions.h"
  44 #include "main/framebuffer.h"
  45 #include "main/state.h"
  46
  47 #include "swrast/swrast.h"
  48 #include "swrast_setup/swrast_setup.h"
  49 #include "vbo/vbo.h"
  50
  51 #include "tnl/tnl.h"
  52 #include "tnl/t_pipeline.h"
  53
  54 #include "drivers/common/driverfuncs.h"
  55
  56 #include "radeon_context.h"
  57 #include "radeon_ioctl.h"
  58 #include "radeon_state.h"
  59 #include "radeon_span.h"
  60 #include "radeon_tex.h"
  61 #include "radeon_swtcl.h"
  62 #include "radeon_tcl.h"
  63 #include "radeon_maos.h"
  64
  65 #define need_GL_ARB_multisample
  66 #define need_GL_ARB_texture_compression
  67 #define need_GL_ARB_vertex_buffer_object
  68 #define need_GL_EXT_blend_minmax
  69 #define need_GL_EXT_fog_coord
  70 #define need_GL_EXT_secondary_color
  71 #include "extension_helper.h"
  72
  73 #define DRIVER_DATE     "20061018"
  74
  75 #include "vblank.h"
  76 #include "utils.h"
  77 #include "xmlpool.h" /* for symbolic values of enum-type options */
  78 #ifndef RADEON_DEBUG
  79 int RADEON_DEBUG = (0);
  80 #endif
  81
  82
  83 /* Return various strings for glGetString().
  84  */
  85 static const GLubyte *radeonGetString( GLcontext *ctx, GLenum name )
  86 {
  87    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
  88    static char buffer[128];
  89    unsigned   offset;
  90    GLuint agp_mode = (rmesa->radeonScreen->card_type==RADEON_CARD_PCI) ? 0 :
  91       rmesa->radeonScreen->AGPMode;
  92
  93    switch ( name ) {
  94    case GL_VENDOR:
  95       return (GLubyte *)"Tungsten Graphics, Inc.";
  96
  97    case GL_RENDERER:
  98       offset = driGetRendererString( buffer, "Radeon", DRIVER_DATE,
  99                                      agp_mode );
 100
 101       sprintf( & buffer[ offset ], " %sTCL",
 102                !(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)
 103                ? "" : "NO-" );
 104
 105       return (GLubyte *)buffer;
 106
 107    default:
 108       return NULL;
 109    }
 110 }
 111
 112
 113 /* Extension strings exported by the R100 driver.
 114  */
 115 const struct dri_extension card_extensions[] =
 116 {
 117     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 118     { "GL_ARB_multitexture",               NULL },
 119     { "GL_ARB_texture_border_clamp",       NULL },
 120     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 121     { "GL_ARB_texture_env_add",            NULL },
 122     { "GL_ARB_texture_env_combine",        NULL },
 123     { "GL_ARB_texture_env_crossbar",       NULL },
 124     { "GL_ARB_texture_env_dot3",           NULL },
 125     { "GL_ARB_texture_mirrored_repeat",    NULL },
 126     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 127     { "GL_EXT_blend_logic_op",             NULL },
 128     { "GL_EXT_blend_subtract",             GL_EXT_blend_minmax_functions },
 129     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 130     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 131     { "GL_EXT_stencil_wrap",               NULL },
 132     { "GL_EXT_texture_edge_clamp",         NULL },
 133     { "GL_EXT_texture_env_combine",        NULL },
 134     { "GL_EXT_texture_env_dot3",           NULL },
 135     { "GL_EXT_texture_filter_anisotropic", NULL },
 136     { "GL_EXT_texture_lod_bias",           NULL },
 137     { "GL_EXT_texture_mirror_clamp",       NULL },
 138     { "GL_ATI_texture_env_combine3",       NULL },
 139     { "GL_ATI_texture_mirror_once",        NULL },
 140     { "GL_MESA_ycbcr_texture",             NULL },
 141     { "GL_NV_blend_square",                NULL },
 142     { "GL_SGIS_generate_mipmap",           NULL },
 143     { NULL,                                NULL }
 144 };
 145
 146 extern const struct tnl_pipeline_stage _radeon_render_stage;
 147 extern const struct tnl_pipeline_stage _radeon_tcl_stage;
 148
 149 static const struct tnl_pipeline_stage *radeon_pipeline[] = {
 150
 151    /* Try and go straight to t&l
 152     */
 153    &_radeon_tcl_stage,
 154
 155    /* Catch any t&l fallbacks
 156     */
 157    &_tnl_vertex_transform_stage,
 158    &_tnl_normal_transform_stage,
 159    &_tnl_lighting_stage,
 160    &_tnl_fog_coordinate_stage,
 161    &_tnl_texgen_stage,
 162    &_tnl_texture_transform_stage,
 163
 164    &_radeon_render_stage,
 165    &_tnl_render_stage,          /* FALLBACK:  */
 166    NULL,
 167 };
 168
 169
 170
 171 /* Initialize the driver's misc functions.
 172  */
 173 static void radeonInitDriverFuncs( struct dd_function_table *functions )
 174 {
 175     functions->GetString        = radeonGetString;
 176 }
 177
 178 static const struct dri_debug_control debug_control[] =
 179 {
 180     { "fall",  DEBUG_FALLBACKS },
 181     { "tex",   DEBUG_TEXTURE },
 182     { "ioctl", DEBUG_IOCTL },
 183     { "prim",  DEBUG_PRIMS },
 184     { "vert",  DEBUG_VERTS },
 185     { "state", DEBUG_STATE },
 186     { "code",  DEBUG_CODEGEN },
 187     { "vfmt",  DEBUG_VFMT },
 188     { "vtxf",  DEBUG_VFMT },
 189     { "verb",  DEBUG_VERBOSE },
 190     { "dri",   DEBUG_DRI },
 191     { "dma",   DEBUG_DMA },
 192     { "san",   DEBUG_SANITY },
 193     { "sync",  DEBUG_SYNC },
 194     { NULL,    0 }
 195 };
 196
 197
 198 /* Create the device specific context.
 199  */
 200 GLboolean
 201 radeonCreateContext( const __GLcontextModes *glVisual,
 202                      __DRIcontextPrivate *driContextPriv,
 203                      void *sharedContextPrivate)
 204 {
 205    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 206    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 207    struct dd_function_table functions;
 208    radeonContextPtr rmesa;
 209    GLcontext *ctx, *shareCtx;
 210    int i;
 211    int tcl_mode, fthrottle_mode;
 212
 213    assert(glVisual);
 214    assert(driContextPriv);
 215    assert(screen);
 216
 217    /* Allocate the Radeon context */
 218    rmesa = (radeonContextPtr) CALLOC( sizeof(*rmesa) );
 219    if ( !rmesa )
 220       return GL_FALSE;
 221
 222    /* init exp fog table data */
 223    radeonInitStaticFogData();
 224
 225    /* Parse configuration files.
 226     * Do this here so that initialMaxAnisotropy is set before we create
 227     * the default textures.
 228     */
 229    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 230                         screen->driScreen->myNum, "radeon");
 231    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 232                                                  "def_max_anisotropy");
 233
 234    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 235       if ( sPriv->drm_version.minor < 13 )
 236          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 237                           "disabling.\n", sPriv->drm_version.minor );
 238       else
 239          rmesa->using_hyperz = GL_TRUE;
 240    }
 241
 242    if ( sPriv->drm_version.minor >= 15 )
 243       rmesa->texmicrotile = GL_TRUE;
 244
 245    /* Init default driver functions then plug in our Radeon-specific functions
 246     * (the texture functions are especially important)
 247     */
 248    _mesa_init_driver_functions( &functions );
 249    radeonInitDriverFuncs( &functions );
 250    radeonInitTextureFuncs( &functions );
 251
 252    /* Allocate the Mesa context */
 253    if (sharedContextPrivate)
 254       shareCtx = ((radeonContextPtr) sharedContextPrivate)->glCtx;
 255    else
 256       shareCtx = NULL;
 257    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 258                                        &functions, (void *) rmesa);
 259    if (!rmesa->glCtx) {
 260       FREE(rmesa);
 261       return GL_FALSE;
 262    }
 263    driContextPriv->driverPrivate = rmesa;
 264
 265    /* Init radeon context data */
 266    rmesa->dri.context = driContextPriv;
 267    rmesa->dri.screen = sPriv;
 268    rmesa->dri.drawable = NULL;
 269    rmesa->dri.readable = NULL;
 270    rmesa->dri.hwContext = driContextPriv->hHWContext;
 271    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 272    rmesa->dri.fd = sPriv->fd;
 273    rmesa->dri.drmMinor = sPriv->drm_version.minor;
 274
 275    rmesa->radeonScreen = screen;
 276    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 277                                        screen->sarea_priv_offset);
 278
 279
 280    rmesa->dma.buf0_address = rmesa->radeonScreen->buffers->list[0].address;
 281
 282    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 283    make_empty_list( & rmesa->swapped );
 284
 285    rmesa->nr_heaps = screen->numTexHeaps;
 286    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 287       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 288             screen->texSize[i],
 289             12,
 290             RADEON_NR_TEX_REGIONS,
 291             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 292             & rmesa->sarea->tex_age[i],
 293             & rmesa->swapped,
 294             sizeof( radeonTexObj ),
 295             (destroy_texture_object_t *) radeonDestroyTexObj );
 296
 297       driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
 298                                         & rmesa->c_textureSwaps );
 299    }
 300    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 301                                            "texture_depth");
 302    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 303       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 304          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 305
 306    rmesa->swtcl.RenderIndex = ~0;
 307    rmesa->hw.all_dirty = GL_TRUE;
 308
 309    /* Set the maximum texture size small enough that we can guarentee that
 310     * all texture units can bind a maximal texture and have all of them in
 311     * texturable memory at once. Depending on the allow_large_textures driconf
 312     * setting allow larger textures.
 313     */
 314
 315    ctx = rmesa->glCtx;
 316    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 317                                                  "texture_units");
 318    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 319    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 320
 321    i = driQueryOptioni( &rmesa->optionCache, "allow_large_textures");
 322
 323    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 324                                  rmesa->nr_heaps,
 325                                  & ctx->Const,
 326                                  4,
 327                                  11, /* max 2D texture size is 2048x2048 */
 328                                  8,  /* 256^3 */
 329                                  9,  /* \todo: max cube texture size seems to be 512x512(x6) */
 330                                  11, /* max rect texture size is 2048x2048. */
 331                                  12,
 332                                  GL_FALSE,
 333                                  i );
 334
 335
 336    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 337
 338    /* No wide points.
 339     */
 340    ctx->Const.MinPointSize = 1.0;
 341    ctx->Const.MinPointSizeAA = 1.0;
 342    ctx->Const.MaxPointSize = 1.0;
 343    ctx->Const.MaxPointSizeAA = 1.0;
 344
 345    ctx->Const.MinLineWidth = 1.0;
 346    ctx->Const.MinLineWidthAA = 1.0;
 347    ctx->Const.MaxLineWidth = 10.0;
 348    ctx->Const.MaxLineWidthAA = 10.0;
 349    ctx->Const.LineWidthGranularity = 0.0625;
 350
 351    /* Set maxlocksize (and hence vb size) small enough to avoid
 352     * fallbacks in radeon_tcl.c.  ie. guarentee that all vertices can
 353     * fit in a single dma buffer for indexed rendering of quad strips,
 354     * etc.
 355     */
 356    ctx->Const.MaxArrayLockSize =
 357       MIN2( ctx->Const.MaxArrayLockSize,
 358             RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE );
 359
 360    rmesa->boxes = 0;
 361
 362    /* Initialize the software rasterizer and helper modules.
 363     */
 364    _swrast_CreateContext( ctx );
 365    _vbo_CreateContext( ctx );
 366    _tnl_CreateContext( ctx );
 367    _swsetup_CreateContext( ctx );
 368    _ae_create_context( ctx );
 369
 370    /* Install the customized pipeline:
 371     */
 372    _tnl_destroy_pipeline( ctx );
 373    _tnl_install_pipeline( ctx, radeon_pipeline );
 374
 375    /* Try and keep materials and vertices separate:
 376     */
 377 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 378
 379    /* Configure swrast and T&L to match hardware characteristics:
 380     */
 381    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 382    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 383    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 384    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 385
 386
 387    for ( i = 0 ; i < RADEON_MAX_TEXTURE_UNITS ; i++ ) {
 388       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 389       _math_matrix_ctr( &rmesa->tmpmat[i] );
 390       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 391       _math_matrix_set_identity( &rmesa->tmpmat[i] );
 392    }
 393
 394    driInitExtensions( ctx, card_extensions, GL_TRUE );
 395    if (rmesa->radeonScreen->drmSupportsCubeMapsR100)
 396       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 397    if (rmesa->glCtx->Mesa_DXTn) {
 398       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 399       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 400    }
 401    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 402       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 403    }
 404
 405    if (rmesa->dri.drmMinor >= 9)
 406       _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
 407
 408    /* XXX these should really go right after _mesa_init_driver_functions() */
 409    radeonInitIoctlFuncs( ctx );
 410    radeonInitStateFuncs( ctx );
 411    radeonInitSpanFuncs( ctx );
 412    radeonInitState( rmesa );
 413    radeonInitSwtcl( ctx );
 414
 415    _mesa_vector4f_alloc( &rmesa->tcl.ObjClean, 0,
 416                          ctx->Const.MaxArrayLockSize, 32 );
 417
 418    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 419    rmesa->iw.irq_seq = -1;
 420    rmesa->irqsEmitted = 0;
 421    rmesa->do_irqs = (rmesa->radeonScreen->irq != 0 &&
 422                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 423
 424    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 425
 426    (*sPriv->systemTime->getUST)( & rmesa->swap_ust );
 427
 428
 429 #if DO_DEBUG
 430    RADEON_DEBUG = driParseDebugString( getenv( "RADEON_DEBUG" ),
 431                                        debug_control );
 432 #endif
 433
 434    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 435    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 436       fprintf(stderr, "disabling 3D acceleration\n");
 437       FALLBACK(rmesa, RADEON_FALLBACK_DISABLE, 1);
 438    } else if (tcl_mode == DRI_CONF_TCL_SW ||
 439               !(rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL)) {
 440       if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 441          rmesa->radeonScreen->chip_flags &= ~RADEON_CHIPSET_TCL;
 442          fprintf(stderr, "Disabling HW TCL support\n");
 443       }
 444       TCL_FALLBACK(rmesa->glCtx, RADEON_TCL_FALLBACK_TCL_DISABLE, 1);
 445    }
 446
 447    if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 448 /*       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE ); */
 449    }
 450    return GL_TRUE;
 451 }
 452
 453
 454 /* Destroy the device specific context.
 455  */
 456 /* Destroy the Mesa and driver specific context data.
 457  */
 458 void radeonDestroyContext( __DRIcontextPrivate *driContextPriv )
 459 {
 460    GET_CURRENT_CONTEXT(ctx);
 461    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 462    radeonContextPtr current = ctx ? RADEON_CONTEXT(ctx) : NULL;
 463
 464    /* check if we're deleting the currently bound context */
 465    if (rmesa == current) {
 466       RADEON_FIREVERTICES( rmesa );
 467       _mesa_make_current(NULL, NULL, NULL);
 468    }
 469
 470    /* Free radeon context resources */
 471    assert(rmesa); /* should never be null */
 472    if ( rmesa ) {
 473       GLboolean   release_texture_heaps;
 474
 475
 476       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 477       _swsetup_DestroyContext( rmesa->glCtx );
 478       _tnl_DestroyContext( rmesa->glCtx );
 479       _vbo_DestroyContext( rmesa->glCtx );
 480       _swrast_DestroyContext( rmesa->glCtx );
 481
 482       radeonDestroySwtcl( rmesa->glCtx );
 483       radeonReleaseArrays( rmesa->glCtx, ~0 );
 484       if (rmesa->dma.current.buf) {
 485          radeonReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 486          radeonFlushCmdBuf( rmesa, __FUNCTION__ );
 487       }
 488
 489       _mesa_vector4f_free( &rmesa->tcl.ObjClean );
 490
 491       if (rmesa->state.scissor.pClipRects) {
 492          FREE(rmesa->state.scissor.pClipRects);
 493          rmesa->state.scissor.pClipRects = NULL;
 494       }
 495
 496       if ( release_texture_heaps ) {
 497          /* This share group is about to go away, free our private
 498           * texture object data.
 499           */
 500          int i;
 501
 502          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 503             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 504             rmesa->texture_heaps[ i ] = NULL;
 505          }
 506
 507          assert( is_empty_list( & rmesa->swapped ) );
 508       }
 509
 510       /* free the Mesa context */
 511       rmesa->glCtx->DriverCtx = NULL;
 512       _mesa_destroy_context( rmesa->glCtx );
 513
 514       /* free the option cache */
 515       driDestroyOptionCache (&rmesa->optionCache);
 516
 517       FREE( rmesa );
 518    }
 519 }
 520
 521
 522
 523
 524 void
 525 radeonSwapBuffers( __DRIdrawablePrivate *dPriv )
 526 {
 527
 528    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 529       radeonContextPtr rmesa;
 530       GLcontext *ctx;
 531       rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 532       ctx = rmesa->glCtx;
 533       if (ctx->Visual.doubleBufferMode) {
 534          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 535
 536          if ( rmesa->doPageFlip ) {
 537             radeonPageFlip( dPriv );
 538          }
 539          else {
 540              radeonCopyBuffer( dPriv, NULL );
 541          }
 542       }
 543    }
 544    else {
 545       /* XXX this shouldn't be an error but we can't handle it for now */
 546       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 547    }
 548 }
 549
 550 void radeonCopySubBuffer(__DRIdrawablePrivate * dPriv,
 551                          int x, int y, int w, int h )
 552 {
 553     if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 554         radeonContextPtr radeon;
 555         GLcontext *ctx;
 556
 557         radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 558         ctx = radeon->glCtx;
 559
 560         if (ctx->Visual.doubleBufferMode) {
 561             drm_clip_rect_t rect;
 562             rect.x1 = x + dPriv->x;
 563             rect.y1 = (dPriv->h - y - h) + dPriv->y;
 564             rect.x2 = rect.x1 + w;
 565             rect.y2 = rect.y1 + h;
 566             _mesa_notifySwapBuffers(ctx);       /* flush pending rendering comands */
 567             radeonCopyBuffer(dPriv, &rect);
 568         }
 569     } else {
 570         /* XXX this shouldn't be an error but we can't handle it for now */
 571         _mesa_problem(NULL, "%s: drawable has no context!",
 572                       __FUNCTION__);
 573     }
 574 }
 575
 576 /* Make context `c' the current context and bind it to the given
 577  * drawing and reading surfaces.
 578  */
 579 GLboolean
 580 radeonMakeCurrent( __DRIcontextPrivate *driContextPriv,
 581                    __DRIdrawablePrivate *driDrawPriv,
 582                    __DRIdrawablePrivate *driReadPriv )
 583 {
 584    if ( driContextPriv ) {
 585       radeonContextPtr newCtx =
 586          (radeonContextPtr) driContextPriv->driverPrivate;
 587
 588       if (RADEON_DEBUG & DEBUG_DRI)
 589          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) newCtx->glCtx);
 590
 591       newCtx->dri.readable = driReadPriv;
 592
 593       if ( (newCtx->dri.drawable != driDrawPriv) ||
 594            newCtx->lastStamp != driDrawPriv->lastStamp ) {
 595          if (driDrawPriv->swap_interval == (unsigned)-1) {
 596             driDrawPriv->vblFlags = (newCtx->radeonScreen->irq != 0)
 597                ? driGetDefaultVBlankFlags(&newCtx->optionCache)
 598                : VBLANK_FLAG_NO_IRQ;
 599
 600             driDrawableInitVBlank( driDrawPriv );
 601          }
 602
 603          newCtx->dri.drawable = driDrawPriv;
 604
 605          radeonSetCliprects(newCtx);
 606          radeonUpdateViewportOffset( newCtx->glCtx );
 607       }
 608
 609       _mesa_make_current( newCtx->glCtx,
 610                           (GLframebuffer *) driDrawPriv->driverPrivate,
 611                           (GLframebuffer *) driReadPriv->driverPrivate );
 612
 613       _mesa_update_state( newCtx->glCtx );
 614    } else {
 615       if (RADEON_DEBUG & DEBUG_DRI)
 616          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 617       _mesa_make_current( NULL, NULL, NULL );
 618    }
 619
 620    if (RADEON_DEBUG & DEBUG_DRI)
 621       fprintf(stderr, "End %s\n", __FUNCTION__);
 622    return GL_TRUE;
 623 }
 624
 625 /* Force the context `c' to be unbound from its buffer.
 626  */
 627 GLboolean
 628 radeonUnbindContext( __DRIcontextPrivate *driContextPriv )
 629 {
 630    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 631
 632    if (RADEON_DEBUG & DEBUG_DRI)
 633       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) rmesa->glCtx);
 634
 635    return GL_TRUE;
 636 }