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 "main/glheader.h"
  39 #include "main/api_arrayelt.h"
  40 #include "main/context.h"
  41 #include "main/simple_list.h"
  42 #include "main/imports.h"
  43 #include "main/matrix.h"
  44 #include "main/extensions.h"
  45 #include "main/framebuffer.h"
  46 #include "main/state.h"
  47
  48 #include "swrast/swrast.h"
  49 #include "swrast_setup/swrast_setup.h"
  50 #include "vbo/vbo.h"
  51
  52 #include "tnl/tnl.h"
  53 #include "tnl/t_pipeline.h"
  54
  55 #include "drivers/common/driverfuncs.h"
  56
  57 #include "radeon_context.h"
  58 #include "radeon_ioctl.h"
  59 #include "radeon_state.h"
  60 #include "radeon_span.h"
  61 #include "radeon_tex.h"
  62 #include "radeon_swtcl.h"
  63 #include "radeon_tcl.h"
  64 #include "radeon_maos.h"
  65
  66 #define need_GL_ARB_multisample
  67 #define need_GL_ARB_texture_compression
  68 #define need_GL_ARB_vertex_buffer_object
  69 #define need_GL_EXT_blend_minmax
  70 #define need_GL_EXT_fog_coord
  71 #define need_GL_EXT_secondary_color
  72 #include "extension_helper.h"
  73
  74 #define DRIVER_DATE     "20061018"
  75
  76 #include "vblank.h"
  77 #include "utils.h"
  78 #include "xmlpool.h" /* for symbolic values of enum-type options */
  79 #ifndef RADEON_DEBUG
  80 int RADEON_DEBUG = (0);
  81 #endif
  82
  83
  84 /* Return various strings for glGetString().
  85  */
  86 static const GLubyte *radeonGetString( GLcontext *ctx, GLenum name )
  87 {
  88    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
  89    static char buffer[128];
  90    unsigned   offset;
  91    GLuint agp_mode = (rmesa->radeonScreen->card_type==RADEON_CARD_PCI) ? 0 :
  92       rmesa->radeonScreen->AGPMode;
  93
  94    switch ( name ) {
  95    case GL_VENDOR:
  96       return (GLubyte *)"Tungsten Graphics, Inc.";
  97
  98    case GL_RENDERER:
  99       offset = driGetRendererString( buffer, "Radeon", DRIVER_DATE,
 100                                      agp_mode );
 101
 102       sprintf( & buffer[ offset ], " %sTCL",
 103                !(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)
 104                ? "" : "NO-" );
 105
 106       return (GLubyte *)buffer;
 107
 108    default:
 109       return NULL;
 110    }
 111 }
 112
 113
 114 /* Extension strings exported by the R100 driver.
 115  */
 116 const struct dri_extension card_extensions[] =
 117 {
 118     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 119     { "GL_ARB_multitexture",               NULL },
 120     { "GL_ARB_texture_border_clamp",       NULL },
 121     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 122     { "GL_ARB_texture_env_add",            NULL },
 123     { "GL_ARB_texture_env_combine",        NULL },
 124     { "GL_ARB_texture_env_crossbar",       NULL },
 125     { "GL_ARB_texture_env_dot3",           NULL },
 126     { "GL_ARB_texture_mirrored_repeat",    NULL },
 127     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 128     { "GL_EXT_blend_logic_op",             NULL },
 129     { "GL_EXT_blend_subtract",             GL_EXT_blend_minmax_functions },
 130     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 131     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 132     { "GL_EXT_stencil_wrap",               NULL },
 133     { "GL_EXT_texture_edge_clamp",         NULL },
 134     { "GL_EXT_texture_env_combine",        NULL },
 135     { "GL_EXT_texture_env_dot3",           NULL },
 136     { "GL_EXT_texture_filter_anisotropic", NULL },
 137     { "GL_EXT_texture_lod_bias",           NULL },
 138     { "GL_EXT_texture_mirror_clamp",       NULL },
 139     { "GL_ATI_texture_env_combine3",       NULL },
 140     { "GL_ATI_texture_mirror_once",        NULL },
 141     { "GL_MESA_ycbcr_texture",             NULL },
 142     { "GL_NV_blend_square",                NULL },
 143     { "GL_SGIS_generate_mipmap",           NULL },
 144     { NULL,                                NULL }
 145 };
 146
 147 extern const struct tnl_pipeline_stage _radeon_render_stage;
 148 extern const struct tnl_pipeline_stage _radeon_tcl_stage;
 149
 150 static const struct tnl_pipeline_stage *radeon_pipeline[] = {
 151
 152    /* Try and go straight to t&l
 153     */
 154    &_radeon_tcl_stage,
 155
 156    /* Catch any t&l fallbacks
 157     */
 158    &_tnl_vertex_transform_stage,
 159    &_tnl_normal_transform_stage,
 160    &_tnl_lighting_stage,
 161    &_tnl_fog_coordinate_stage,
 162    &_tnl_texgen_stage,
 163    &_tnl_texture_transform_stage,
 164
 165    &_radeon_render_stage,
 166    &_tnl_render_stage,          /* FALLBACK:  */
 167    NULL,
 168 };
 169
 170
 171
 172 /* Initialize the driver's misc functions.
 173  */
 174 static void radeonInitDriverFuncs( struct dd_function_table *functions )
 175 {
 176     functions->GetString        = radeonGetString;
 177 }
 178
 179 static const struct dri_debug_control debug_control[] =
 180 {
 181     { "fall",  DEBUG_FALLBACKS },
 182     { "tex",   DEBUG_TEXTURE },
 183     { "ioctl", DEBUG_IOCTL },
 184     { "prim",  DEBUG_PRIMS },
 185     { "vert",  DEBUG_VERTS },
 186     { "state", DEBUG_STATE },
 187     { "code",  DEBUG_CODEGEN },
 188     { "vfmt",  DEBUG_VFMT },
 189     { "vtxf",  DEBUG_VFMT },
 190     { "verb",  DEBUG_VERBOSE },
 191     { "dri",   DEBUG_DRI },
 192     { "dma",   DEBUG_DMA },
 193     { "san",   DEBUG_SANITY },
 194     { "sync",  DEBUG_SYNC },
 195     { NULL,    0 }
 196 };
 197
 198
 199 /* Create the device specific context.
 200  */
 201 GLboolean
 202 radeonCreateContext( const __GLcontextModes *glVisual,
 203                      __DRIcontextPrivate *driContextPriv,
 204                      void *sharedContextPrivate)
 205 {
 206    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 207    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 208    struct dd_function_table functions;
 209    radeonContextPtr rmesa;
 210    GLcontext *ctx, *shareCtx;
 211    int i;
 212    int tcl_mode, fthrottle_mode;
 213
 214    assert(glVisual);
 215    assert(driContextPriv);
 216    assert(screen);
 217
 218    /* Allocate the Radeon context */
 219    rmesa = (radeonContextPtr) CALLOC( sizeof(*rmesa) );
 220    if ( !rmesa )
 221       return GL_FALSE;
 222
 223    /* init exp fog table data */
 224    radeonInitStaticFogData();
 225
 226    /* Parse configuration files.
 227     * Do this here so that initialMaxAnisotropy is set before we create
 228     * the default textures.
 229     */
 230    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 231                         screen->driScreen->myNum, "radeon");
 232    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 233                                                  "def_max_anisotropy");
 234
 235    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 236       if ( sPriv->drm_version.minor < 13 )
 237          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 238                           "disabling.\n", sPriv->drm_version.minor );
 239       else
 240          rmesa->using_hyperz = GL_TRUE;
 241    }
 242
 243    if ( sPriv->drm_version.minor >= 15 )
 244       rmesa->texmicrotile = GL_TRUE;
 245
 246    /* Init default driver functions then plug in our Radeon-specific functions
 247     * (the texture functions are especially important)
 248     */
 249    _mesa_init_driver_functions( &functions );
 250    radeonInitDriverFuncs( &functions );
 251    radeonInitTextureFuncs( &functions );
 252
 253    /* Allocate the Mesa context */
 254    if (sharedContextPrivate)
 255       shareCtx = ((radeonContextPtr) sharedContextPrivate)->glCtx;
 256    else
 257       shareCtx = NULL;
 258    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 259                                        &functions, (void *) rmesa);
 260    if (!rmesa->glCtx) {
 261       FREE(rmesa);
 262       return GL_FALSE;
 263    }
 264    driContextPriv->driverPrivate = rmesa;
 265
 266    /* Init radeon context data */
 267    rmesa->dri.context = driContextPriv;
 268    rmesa->dri.screen = sPriv;
 269    rmesa->dri.drawable = NULL;
 270    rmesa->dri.readable = NULL;
 271    rmesa->dri.hwContext = driContextPriv->hHWContext;
 272    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 273    rmesa->dri.fd = sPriv->fd;
 274    rmesa->dri.drmMinor = sPriv->drm_version.minor;
 275
 276    rmesa->radeonScreen = screen;
 277    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 278                                        screen->sarea_priv_offset);
 279
 280
 281    rmesa->dma.buf0_address = rmesa->radeonScreen->buffers->list[0].address;
 282
 283    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 284    make_empty_list( & rmesa->swapped );
 285
 286    rmesa->nr_heaps = screen->numTexHeaps;
 287    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 288       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 289             screen->texSize[i],
 290             12,
 291             RADEON_NR_TEX_REGIONS,
 292             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 293             & rmesa->sarea->tex_age[i],
 294             & rmesa->swapped,
 295             sizeof( radeonTexObj ),
 296             (destroy_texture_object_t *) radeonDestroyTexObj );
 297
 298       driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
 299                                         & rmesa->c_textureSwaps );
 300    }
 301    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 302                                            "texture_depth");
 303    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 304       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 305          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 306
 307    rmesa->swtcl.RenderIndex = ~0;
 308    rmesa->hw.all_dirty = GL_TRUE;
 309
 310    /* Set the maximum texture size small enough that we can guarentee that
 311     * all texture units can bind a maximal texture and have all of them in
 312     * texturable memory at once. Depending on the allow_large_textures driconf
 313     * setting allow larger textures.
 314     */
 315
 316    ctx = rmesa->glCtx;
 317    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 318                                                  "texture_units");
 319    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 320    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 321
 322    i = driQueryOptioni( &rmesa->optionCache, "allow_large_textures");
 323
 324    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 325                                  rmesa->nr_heaps,
 326                                  & ctx->Const,
 327                                  4,
 328                                  11, /* max 2D texture size is 2048x2048 */
 329                                  8,  /* 256^3 */
 330                                  9,  /* \todo: max cube texture size seems to be 512x512(x6) */
 331                                  11, /* max rect texture size is 2048x2048. */
 332                                  12,
 333                                  GL_FALSE,
 334                                  i );
 335
 336
 337    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 338
 339    /* No wide points.
 340     */
 341    ctx->Const.MinPointSize = 1.0;
 342    ctx->Const.MinPointSizeAA = 1.0;
 343    ctx->Const.MaxPointSize = 1.0;
 344    ctx->Const.MaxPointSizeAA = 1.0;
 345
 346    ctx->Const.MinLineWidth = 1.0;
 347    ctx->Const.MinLineWidthAA = 1.0;
 348    ctx->Const.MaxLineWidth = 10.0;
 349    ctx->Const.MaxLineWidthAA = 10.0;
 350    ctx->Const.LineWidthGranularity = 0.0625;
 351
 352    /* Set maxlocksize (and hence vb size) small enough to avoid
 353     * fallbacks in radeon_tcl.c.  ie. guarentee that all vertices can
 354     * fit in a single dma buffer for indexed rendering of quad strips,
 355     * etc.
 356     */
 357    ctx->Const.MaxArrayLockSize =
 358       MIN2( ctx->Const.MaxArrayLockSize,
 359             RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE );
 360
 361    rmesa->boxes = 0;
 362
 363    /* Initialize the software rasterizer and helper modules.
 364     */
 365    _swrast_CreateContext( ctx );
 366    _vbo_CreateContext( ctx );
 367    _tnl_CreateContext( ctx );
 368    _swsetup_CreateContext( ctx );
 369    _ae_create_context( ctx );
 370
 371    /* Install the customized pipeline:
 372     */
 373    _tnl_destroy_pipeline( ctx );
 374    _tnl_install_pipeline( ctx, radeon_pipeline );
 375
 376    /* Try and keep materials and vertices separate:
 377     */
 378 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 379
 380    /* Configure swrast and T&L to match hardware characteristics:
 381     */
 382    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 383    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 384    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 385    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 386
 387
 388    for ( i = 0 ; i < RADEON_MAX_TEXTURE_UNITS ; i++ ) {
 389       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 390       _math_matrix_ctr( &rmesa->tmpmat[i] );
 391       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 392       _math_matrix_set_identity( &rmesa->tmpmat[i] );
 393    }
 394
 395    driInitExtensions( ctx, card_extensions, GL_TRUE );
 396    if (rmesa->radeonScreen->drmSupportsCubeMapsR100)
 397       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 398    if (rmesa->glCtx->Mesa_DXTn) {
 399       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 400       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 401    }
 402    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 403       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 404    }
 405
 406    if (rmesa->dri.drmMinor >= 9)
 407       _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
 408
 409    /* XXX these should really go right after _mesa_init_driver_functions() */
 410    radeonInitIoctlFuncs( ctx );
 411    radeonInitStateFuncs( ctx );
 412    radeonInitSpanFuncs( ctx );
 413    radeonInitState( rmesa );
 414    radeonInitSwtcl( ctx );
 415
 416    _mesa_vector4f_alloc( &rmesa->tcl.ObjClean, 0,
 417                          ctx->Const.MaxArrayLockSize, 32 );
 418
 419    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 420    rmesa->iw.irq_seq = -1;
 421    rmesa->irqsEmitted = 0;
 422    rmesa->do_irqs = (rmesa->radeonScreen->irq != 0 &&
 423                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 424
 425    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 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       newCtx->dri.readable = driReadPriv;
 593
 594       if ( (newCtx->dri.drawable != driDrawPriv) ||
 595            newCtx->lastStamp != driDrawPriv->lastStamp ) {
 596          if (driDrawPriv->swap_interval == (unsigned)-1) {
 597             driDrawPriv->vblFlags = (newCtx->radeonScreen->irq != 0)
 598                ? driGetDefaultVBlankFlags(&newCtx->optionCache)
 599                : VBLANK_FLAG_NO_IRQ;
 600
 601             driDrawableInitVBlank( driDrawPriv );
 602          }
 603
 604          newCtx->dri.drawable = driDrawPriv;
 605
 606          radeonSetCliprects(newCtx);
 607          radeonUpdateViewportOffset( newCtx->glCtx );
 608       }
 609
 610       _mesa_make_current( newCtx->glCtx,
 611                           (GLframebuffer *) driDrawPriv->driverPrivate,
 612                           (GLframebuffer *) driReadPriv->driverPrivate );
 613
 614       _mesa_update_state( newCtx->glCtx );
 615    } else {
 616       if (RADEON_DEBUG & DEBUG_DRI)
 617          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 618       _mesa_make_current( NULL, NULL, NULL );
 619    }
 620
 621    if (RADEON_DEBUG & DEBUG_DRI)
 622       fprintf(stderr, "End %s\n", __FUNCTION__);
 623    return GL_TRUE;
 624 }
 625
 626 /* Force the context `c' to be unbound from its buffer.
 627  */
 628 GLboolean
 629 radeonUnbindContext( __DRIcontextPrivate *driContextPriv )
 630 {
 631    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 632
 633    if (RADEON_DEBUG & DEBUG_DRI)
 634       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) rmesa->glCtx);
 635
 636    return GL_TRUE;
 637 }