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

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/radeon/radeon_context.c,v 1.9 2003/09/24 02:43:12 dawes Exp $ */
   2 /**************************************************************************
   3
   4 Copyright 2000, 2001 ATI Technologies Inc., Ontario, Canada, and
   5                      VA Linux Systems Inc., Fremont, California.
   6
   7 All Rights Reserved.
   8
   9 Permission is hereby granted, free of charge, to any person obtaining
  10 a copy of this software and associated documentation files (the
  11 "Software"), to deal in the Software without restriction, including
  12 without limitation the rights to use, copy, modify, merge, publish,
  13 distribute, sublicense, and/or sell copies of the Software, and to
  14 permit persons to whom the Software is furnished to do so, subject to
  15 the following conditions:
  16
  17 The above copyright notice and this permission notice (including the
  18 next paragraph) shall be included in all copies or substantial
  19 portions of the Software.
  20
  21 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  24 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  25 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28
  29 **************************************************************************/
  30
  31 /*
  32  * Authors:
  33  *   Kevin E. Martin <martin@valinux.com>
  34  *   Gareth Hughes <gareth@valinux.com>
  35  *   Keith Whitwell <keith@tungstengraphics.com>
  36  */
  37
  38 #include "glheader.h"
  39 #include "api_arrayelt.h"
  40 #include "context.h"
  41 #include "simple_list.h"
  42 #include "imports.h"
  43 #include "matrix.h"
  44 #include "extensions.h"
  45 #include "framebuffer.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_EXT_blend_minmax
  68 #define need_GL_EXT_fog_coord
  69 #define need_GL_EXT_secondary_color
  70 #include "extension_helper.h"
  71
  72 #define DRIVER_DATE     "20061018"
  73
  74 #include "vblank.h"
  75 #include "utils.h"
  76 #include "xmlpool.h" /* for symbolic values of enum-type options */
  77 #ifndef RADEON_DEBUG
  78 int RADEON_DEBUG = (0);
  79 #endif
  80
  81
  82 /* Return various strings for glGetString().
  83  */
  84 static const GLubyte *radeonGetString( GLcontext *ctx, GLenum name )
  85 {
  86    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
  87    static char buffer[128];
  88    unsigned   offset;
  89    GLuint agp_mode = (rmesa->radeonScreen->card_type==RADEON_CARD_PCI) ? 0 :
  90       rmesa->radeonScreen->AGPMode;
  91
  92    switch ( name ) {
  93    case GL_VENDOR:
  94       return (GLubyte *)"Tungsten Graphics, Inc.";
  95
  96    case GL_RENDERER:
  97       offset = driGetRendererString( buffer, "Radeon", DRIVER_DATE,
  98                                      agp_mode );
  99
 100       sprintf( & buffer[ offset ], " %sTCL",
 101                !(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)
 102                ? "" : "NO-" );
 103
 104       return (GLubyte *)buffer;
 105
 106    default:
 107       return NULL;
 108    }
 109 }
 110
 111
 112 /* Extension strings exported by the R100 driver.
 113  */
 114 const struct dri_extension card_extensions[] =
 115 {
 116     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 117     { "GL_ARB_multitexture",               NULL },
 118     { "GL_ARB_texture_border_clamp",       NULL },
 119     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 120     { "GL_ARB_texture_env_add",            NULL },
 121     { "GL_ARB_texture_env_combine",        NULL },
 122     { "GL_ARB_texture_env_crossbar",       NULL },
 123     { "GL_ARB_texture_env_dot3",           NULL },
 124     { "GL_ARB_texture_mirrored_repeat",    NULL },
 125     { "GL_EXT_blend_logic_op",             NULL },
 126     { "GL_EXT_blend_subtract",             GL_EXT_blend_minmax_functions },
 127     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 128     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 129     { "GL_EXT_stencil_wrap",               NULL },
 130     { "GL_EXT_texture_edge_clamp",         NULL },
 131     { "GL_EXT_texture_env_combine",        NULL },
 132     { "GL_EXT_texture_env_dot3",           NULL },
 133     { "GL_EXT_texture_filter_anisotropic", NULL },
 134     { "GL_EXT_texture_lod_bias",           NULL },
 135     { "GL_EXT_texture_mirror_clamp",       NULL },
 136     { "GL_ATI_texture_env_combine3",       NULL },
 137     { "GL_ATI_texture_mirror_once",        NULL },
 138     { "GL_MESA_ycbcr_texture",             NULL },
 139     { "GL_NV_blend_square",                NULL },
 140     { "GL_SGIS_generate_mipmap",           NULL },
 141     { NULL,                                NULL }
 142 };
 143
 144 extern const struct tnl_pipeline_stage _radeon_render_stage;
 145 extern const struct tnl_pipeline_stage _radeon_tcl_stage;
 146
 147 static const struct tnl_pipeline_stage *radeon_pipeline[] = {
 148
 149    /* Try and go straight to t&l
 150     */
 151    &_radeon_tcl_stage,
 152
 153    /* Catch any t&l fallbacks
 154     */
 155    &_tnl_vertex_transform_stage,
 156    &_tnl_normal_transform_stage,
 157    &_tnl_lighting_stage,
 158    &_tnl_fog_coordinate_stage,
 159    &_tnl_texgen_stage,
 160    &_tnl_texture_transform_stage,
 161
 162    &_radeon_render_stage,
 163    &_tnl_render_stage,          /* FALLBACK:  */
 164    NULL,
 165 };
 166
 167
 168
 169 /* Initialize the driver's misc functions.
 170  */
 171 static void radeonInitDriverFuncs( struct dd_function_table *functions )
 172 {
 173     functions->GetString        = radeonGetString;
 174 }
 175
 176 static const struct dri_debug_control debug_control[] =
 177 {
 178     { "fall",  DEBUG_FALLBACKS },
 179     { "tex",   DEBUG_TEXTURE },
 180     { "ioctl", DEBUG_IOCTL },
 181     { "prim",  DEBUG_PRIMS },
 182     { "vert",  DEBUG_VERTS },
 183     { "state", DEBUG_STATE },
 184     { "code",  DEBUG_CODEGEN },
 185     { "vfmt",  DEBUG_VFMT },
 186     { "vtxf",  DEBUG_VFMT },
 187     { "verb",  DEBUG_VERBOSE },
 188     { "dri",   DEBUG_DRI },
 189     { "dma",   DEBUG_DMA },
 190     { "san",   DEBUG_SANITY },
 191     { "sync",  DEBUG_SYNC },
 192     { NULL,    0 }
 193 };
 194
 195
 196 /* Create the device specific context.
 197  */
 198 GLboolean
 199 radeonCreateContext( const __GLcontextModes *glVisual,
 200                      __DRIcontextPrivate *driContextPriv,
 201                      void *sharedContextPrivate)
 202 {
 203    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 204    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 205    struct dd_function_table functions;
 206    radeonContextPtr rmesa;
 207    GLcontext *ctx, *shareCtx;
 208    int i;
 209    int tcl_mode, fthrottle_mode;
 210
 211    assert(glVisual);
 212    assert(driContextPriv);
 213    assert(screen);
 214
 215    /* Allocate the Radeon context */
 216    rmesa = (radeonContextPtr) CALLOC( sizeof(*rmesa) );
 217    if ( !rmesa )
 218       return GL_FALSE;
 219
 220    /* init exp fog table data */
 221    radeonInitStaticFogData();
 222
 223    /* Parse configuration files.
 224     * Do this here so that initialMaxAnisotropy is set before we create
 225     * the default textures.
 226     */
 227    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 228                         screen->driScreen->myNum, "radeon");
 229    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 230                                                  "def_max_anisotropy");
 231
 232    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 233       if ( sPriv->drmMinor < 13 )
 234          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 235                           "disabling.\n",sPriv->drmMinor );
 236       else
 237          rmesa->using_hyperz = GL_TRUE;
 238    }
 239
 240    if ( sPriv->drmMinor >= 15 )
 241       rmesa->texmicrotile = GL_TRUE;
 242
 243    /* Init default driver functions then plug in our Radeon-specific functions
 244     * (the texture functions are especially important)
 245     */
 246    _mesa_init_driver_functions( &functions );
 247    radeonInitDriverFuncs( &functions );
 248    radeonInitTextureFuncs( &functions );
 249
 250    /* Allocate the Mesa context */
 251    if (sharedContextPrivate)
 252       shareCtx = ((radeonContextPtr) sharedContextPrivate)->glCtx;
 253    else
 254       shareCtx = NULL;
 255    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 256                                        &functions, (void *) rmesa);
 257    if (!rmesa->glCtx) {
 258       FREE(rmesa);
 259       return GL_FALSE;
 260    }
 261    driContextPriv->driverPrivate = rmesa;
 262
 263    /* Init radeon context data */
 264    rmesa->dri.context = driContextPriv;
 265    rmesa->dri.screen = sPriv;
 266    rmesa->dri.drawable = NULL;
 267    rmesa->dri.readable = NULL;
 268    rmesa->dri.hwContext = driContextPriv->hHWContext;
 269    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 270    rmesa->dri.fd = sPriv->fd;
 271    rmesa->dri.drmMinor = sPriv->drmMinor;
 272
 273    rmesa->radeonScreen = screen;
 274    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 275                                        screen->sarea_priv_offset);
 276
 277
 278    rmesa->dma.buf0_address = rmesa->radeonScreen->buffers->list[0].address;
 279
 280    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 281    make_empty_list( & rmesa->swapped );
 282
 283    rmesa->nr_heaps = screen->numTexHeaps;
 284    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 285       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 286             screen->texSize[i],
 287             12,
 288             RADEON_NR_TEX_REGIONS,
 289             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 290             & rmesa->sarea->tex_age[i],
 291             & rmesa->swapped,
 292             sizeof( radeonTexObj ),
 293             (destroy_texture_object_t *) radeonDestroyTexObj );
 294
 295       driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
 296                                         & rmesa->c_textureSwaps );
 297    }
 298    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 299                                            "texture_depth");
 300    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 301       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 302          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 303
 304    rmesa->swtcl.RenderIndex = ~0;
 305    rmesa->hw.all_dirty = GL_TRUE;
 306
 307    /* Set the maximum texture size small enough that we can guarentee that
 308     * all texture units can bind a maximal texture and have all of them in
 309     * texturable memory at once. Depending on the allow_large_textures driconf
 310     * setting allow larger textures.
 311     */
 312
 313    ctx = rmesa->glCtx;
 314    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 315                                                  "texture_units");
 316    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 317    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 318
 319    i = driQueryOptioni( &rmesa->optionCache, "allow_large_textures");
 320
 321    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 322                                  rmesa->nr_heaps,
 323                                  & ctx->Const,
 324                                  4,
 325                                  11, /* max 2D texture size is 2048x2048 */
 326                                  8,  /* 256^3 */
 327                                  9,  /* \todo: max cube texture size seems to be 512x512(x6) */
 328                                  11, /* max rect texture size is 2048x2048. */
 329                                  12,
 330                                  GL_FALSE,
 331                                  i );
 332
 333
 334    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 335
 336    /* No wide points.
 337     */
 338    ctx->Const.MinPointSize = 1.0;
 339    ctx->Const.MinPointSizeAA = 1.0;
 340    ctx->Const.MaxPointSize = 1.0;
 341    ctx->Const.MaxPointSizeAA = 1.0;
 342
 343    ctx->Const.MinLineWidth = 1.0;
 344    ctx->Const.MinLineWidthAA = 1.0;
 345    ctx->Const.MaxLineWidth = 10.0;
 346    ctx->Const.MaxLineWidthAA = 10.0;
 347    ctx->Const.LineWidthGranularity = 0.0625;
 348
 349    /* Set maxlocksize (and hence vb size) small enough to avoid
 350     * fallbacks in radeon_tcl.c.  ie. guarentee that all vertices can
 351     * fit in a single dma buffer for indexed rendering of quad strips,
 352     * etc.
 353     */
 354    ctx->Const.MaxArrayLockSize =
 355       MIN2( ctx->Const.MaxArrayLockSize,
 356             RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE );
 357
 358    rmesa->boxes = 0;
 359
 360    /* Initialize the software rasterizer and helper modules.
 361     */
 362    _swrast_CreateContext( ctx );
 363    _vbo_CreateContext( ctx );
 364    _tnl_CreateContext( ctx );
 365    _swsetup_CreateContext( ctx );
 366    _ae_create_context( ctx );
 367
 368    /* Install the customized pipeline:
 369     */
 370    _tnl_destroy_pipeline( ctx );
 371    _tnl_install_pipeline( ctx, radeon_pipeline );
 372
 373    /* Try and keep materials and vertices separate:
 374     */
 375 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 376
 377    /* Configure swrast and T&L to match hardware characteristics:
 378     */
 379    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 380    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 381    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 382    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 383
 384
 385    for ( i = 0 ; i < RADEON_MAX_TEXTURE_UNITS ; i++ ) {
 386       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 387       _math_matrix_ctr( &rmesa->tmpmat[i] );
 388       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 389       _math_matrix_set_identity( &rmesa->tmpmat[i] );
 390    }
 391
 392    driInitExtensions( ctx, card_extensions, GL_TRUE );
 393    if (rmesa->radeonScreen->drmSupportsCubeMapsR100)
 394       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 395    if (rmesa->glCtx->Mesa_DXTn) {
 396       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 397       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 398    }
 399    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 400       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 401    }
 402
 403    if (rmesa->dri.drmMinor >= 9)
 404       _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
 405
 406    /* XXX these should really go right after _mesa_init_driver_functions() */
 407    radeonInitIoctlFuncs( ctx );
 408    radeonInitStateFuncs( ctx );
 409    radeonInitSpanFuncs( ctx );
 410    radeonInitState( rmesa );
 411    radeonInitSwtcl( ctx );
 412
 413    _mesa_vector4f_alloc( &rmesa->tcl.ObjClean, 0,
 414                          ctx->Const.MaxArrayLockSize, 32 );
 415
 416    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 417    rmesa->iw.irq_seq = -1;
 418    rmesa->irqsEmitted = 0;
 419    rmesa->do_irqs = (rmesa->radeonScreen->irq != 0 &&
 420                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 421
 422    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 423
 424    rmesa->vblank_flags = (rmesa->radeonScreen->irq != 0)
 425        ? driGetDefaultVBlankFlags(&rmesa->optionCache) : VBLANK_FLAG_NO_IRQ;
 426
 427    (*dri_interface->getUST)( & rmesa->swap_ust );
 428
 429
 430 #if DO_DEBUG
 431    RADEON_DEBUG = driParseDebugString( getenv( "RADEON_DEBUG" ),
 432                                        debug_control );
 433 #endif
 434
 435    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 436    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 437       fprintf(stderr, "disabling 3D acceleration\n");
 438       FALLBACK(rmesa, RADEON_FALLBACK_DISABLE, 1);
 439    } else if (tcl_mode == DRI_CONF_TCL_SW ||
 440               !(rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL)) {
 441       if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 442          rmesa->radeonScreen->chip_flags &= ~RADEON_CHIPSET_TCL;
 443          fprintf(stderr, "Disabling HW TCL support\n");
 444       }
 445       TCL_FALLBACK(rmesa->glCtx, RADEON_TCL_FALLBACK_TCL_DISABLE, 1);
 446    }
 447
 448    if (rmesa->radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 449 /*       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE ); */
 450    }
 451    return GL_TRUE;
 452 }
 453
 454
 455 /* Destroy the device specific context.
 456  */
 457 /* Destroy the Mesa and driver specific context data.
 458  */
 459 void radeonDestroyContext( __DRIcontextPrivate *driContextPriv )
 460 {
 461    GET_CURRENT_CONTEXT(ctx);
 462    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 463    radeonContextPtr current = ctx ? RADEON_CONTEXT(ctx) : NULL;
 464
 465    /* check if we're deleting the currently bound context */
 466    if (rmesa == current) {
 467       RADEON_FIREVERTICES( rmesa );
 468       _mesa_make_current(NULL, NULL, NULL);
 469    }
 470
 471    /* Free radeon context resources */
 472    assert(rmesa); /* should never be null */
 473    if ( rmesa ) {
 474       GLboolean   release_texture_heaps;
 475
 476
 477       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 478       _swsetup_DestroyContext( rmesa->glCtx );
 479       _tnl_DestroyContext( rmesa->glCtx );
 480       _vbo_DestroyContext( rmesa->glCtx );
 481       _swrast_DestroyContext( rmesa->glCtx );
 482
 483       radeonDestroySwtcl( rmesa->glCtx );
 484       radeonReleaseArrays( rmesa->glCtx, ~0 );
 485       if (rmesa->dma.current.buf) {
 486          radeonReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 487          radeonFlushCmdBuf( rmesa, __FUNCTION__ );
 488       }
 489
 490       _mesa_vector4f_free( &rmesa->tcl.ObjClean );
 491
 492       if (rmesa->state.scissor.pClipRects) {
 493          FREE(rmesa->state.scissor.pClipRects);
 494          rmesa->state.scissor.pClipRects = NULL;
 495       }
 496
 497       if ( release_texture_heaps ) {
 498          /* This share group is about to go away, free our private
 499           * texture object data.
 500           */
 501          int i;
 502
 503          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 504             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 505             rmesa->texture_heaps[ i ] = NULL;
 506          }
 507
 508          assert( is_empty_list( & rmesa->swapped ) );
 509       }
 510
 511       /* free the Mesa context */
 512       rmesa->glCtx->DriverCtx = NULL;
 513       _mesa_destroy_context( rmesa->glCtx );
 514
 515       /* free the option cache */
 516       driDestroyOptionCache (&rmesa->optionCache);
 517
 518       FREE( rmesa );
 519    }
 520 }
 521
 522
 523
 524
 525 void
 526 radeonSwapBuffers( __DRIdrawablePrivate *dPriv )
 527 {
 528
 529    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 530       radeonContextPtr rmesa;
 531       GLcontext *ctx;
 532       rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 533       ctx = rmesa->glCtx;
 534       if (ctx->Visual.doubleBufferMode) {
 535          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 536
 537          if ( rmesa->doPageFlip ) {
 538             radeonPageFlip( dPriv );
 539          }
 540          else {
 541              radeonCopyBuffer( dPriv, NULL );
 542          }
 543       }
 544    }
 545    else {
 546       /* XXX this shouldn't be an error but we can't handle it for now */
 547       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 548    }
 549 }
 550
 551 void radeonCopySubBuffer(__DRIdrawablePrivate * dPriv,
 552                          int x, int y, int w, int h )
 553 {
 554     if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 555         radeonContextPtr radeon;
 556         GLcontext *ctx;
 557
 558         radeon = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 559         ctx = radeon->glCtx;
 560
 561         if (ctx->Visual.doubleBufferMode) {
 562             drm_clip_rect_t rect;
 563             rect.x1 = x + dPriv->x;
 564             rect.y1 = (dPriv->h - y - h) + dPriv->y;
 565             rect.x2 = rect.x1 + w;
 566             rect.y2 = rect.y1 + h;
 567             _mesa_notifySwapBuffers(ctx);       /* flush pending rendering comands */
 568             radeonCopyBuffer(dPriv, &rect);
 569         }
 570     } else {
 571         /* XXX this shouldn't be an error but we can't handle it for now */
 572         _mesa_problem(NULL, "%s: drawable has no context!",
 573                       __FUNCTION__);
 574     }
 575 }
 576
 577 /* Make context `c' the current context and bind it to the given
 578  * drawing and reading surfaces.
 579  */
 580 GLboolean
 581 radeonMakeCurrent( __DRIcontextPrivate *driContextPriv,
 582                    __DRIdrawablePrivate *driDrawPriv,
 583                    __DRIdrawablePrivate *driReadPriv )
 584 {
 585    if ( driContextPriv ) {
 586       radeonContextPtr newCtx =
 587          (radeonContextPtr) driContextPriv->driverPrivate;
 588
 589       if (RADEON_DEBUG & DEBUG_DRI)
 590          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) newCtx->glCtx);
 591
 592       if ( newCtx->dri.drawable != driDrawPriv ) {
 593          /* XXX we may need to validate the drawable here!!! */
 594          driDrawableInitVBlank( driDrawPriv, newCtx->vblank_flags,
 595                                 &newCtx->vbl_seq );
 596       }
 597
 598       if ( (newCtx->dri.drawable != driDrawPriv)
 599            || (newCtx->dri.readable != driReadPriv) ) {
 600          newCtx->dri.drawable = driDrawPriv;
 601          newCtx->dri.readable = driReadPriv;
 602
 603          radeonUpdateWindow( newCtx->glCtx );
 604          radeonUpdateViewportOffset( newCtx->glCtx );
 605       }
 606
 607       _mesa_make_current( newCtx->glCtx,
 608                           (GLframebuffer *) driDrawPriv->driverPrivate,
 609                           (GLframebuffer *) driReadPriv->driverPrivate );
 610
 611    } else {
 612       if (RADEON_DEBUG & DEBUG_DRI)
 613          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 614       _mesa_make_current( NULL, NULL, NULL );
 615    }
 616
 617    if (RADEON_DEBUG & DEBUG_DRI)
 618       fprintf(stderr, "End %s\n", __FUNCTION__);
 619    return GL_TRUE;
 620 }
 621
 622 /* Force the context `c' to be unbound from its buffer.
 623  */
 624 GLboolean
 625 radeonUnbindContext( __DRIcontextPrivate *driContextPriv )
 626 {
 627    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 628
 629    if (RADEON_DEBUG & DEBUG_DRI)
 630       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) rmesa->glCtx);
 631
 632    return GL_TRUE;
 633 }