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
  46 #include "swrast/swrast.h"
  47 #include "swrast_setup/swrast_setup.h"
  48 #include "array_cache/acache.h"
  49
  50 #include "tnl/tnl.h"
  51 #include "tnl/t_pipeline.h"
  52
  53 #include "drivers/common/driverfuncs.h"
  54
  55 #include "radeon_context.h"
  56 #include "radeon_ioctl.h"
  57 #include "radeon_state.h"
  58 #include "radeon_span.h"
  59 #include "radeon_tex.h"
  60 #include "radeon_swtcl.h"
  61 #include "radeon_tcl.h"
  62 #include "radeon_vtxfmt.h"
  63 #include "radeon_maos.h"
  64
  65 #define DRIVER_DATE     "20041207"
  66
  67 #include "vblank.h"
  68 #include "utils.h"
  69 #include "xmlpool.h" /* for symbolic values of enum-type options */
  70 #ifndef RADEON_DEBUG
  71 int RADEON_DEBUG = (0);
  72 #endif
  73
  74
  75 /* Return the width and height of the given buffer.
  76  */
  77 static void radeonGetBufferSize( GLframebuffer *buffer,
  78                                  GLuint *width, GLuint *height )
  79 {
  80    GET_CURRENT_CONTEXT(ctx);
  81    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
  82
  83    LOCK_HARDWARE( rmesa );
  84    *width  = rmesa->dri.drawable->w;
  85    *height = rmesa->dri.drawable->h;
  86    UNLOCK_HARDWARE( rmesa );
  87 }
  88
  89 /* Return various strings for glGetString().
  90  */
  91 static const GLubyte *radeonGetString( GLcontext *ctx, GLenum name )
  92 {
  93    radeonContextPtr rmesa = RADEON_CONTEXT(ctx);
  94    static char buffer[128];
  95    unsigned   offset;
  96    GLuint agp_mode = rmesa->radeonScreen->IsPCI ? 0 :
  97       rmesa->radeonScreen->AGPMode;
  98
  99    switch ( name ) {
 100    case GL_VENDOR:
 101       return (GLubyte *)"Tungsten Graphics, Inc.";
 102
 103    case GL_RENDERER:
 104       offset = driGetRendererString( buffer, "Radeon", DRIVER_DATE,
 105                                      agp_mode );
 106
 107       sprintf( & buffer[ offset ], " %sTCL",
 108                !(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)
 109                ? "" : "NO-" );
 110
 111       return (GLubyte *)buffer;
 112
 113    default:
 114       return NULL;
 115    }
 116 }
 117
 118
 119 /* Extension strings exported by the R100 driver.
 120  */
 121 static const char * const card_extensions[] =
 122 {
 123     "GL_ARB_multisample",
 124     "GL_ARB_multitexture",
 125     "GL_ARB_texture_border_clamp",
 126     "GL_ARB_texture_compression",
 127     "GL_ARB_texture_env_add",
 128     "GL_ARB_texture_env_combine",
 129     "GL_ARB_texture_env_crossbar",
 130     "GL_ARB_texture_env_dot3",
 131     "GL_ARB_texture_mirrored_repeat",
 132     "GL_EXT_blend_logic_op",
 133     "GL_EXT_blend_subtract",
 134     "GL_EXT_secondary_color",
 135     "GL_EXT_stencil_wrap",
 136     "GL_EXT_texture_edge_clamp",
 137     "GL_EXT_texture_env_combine",
 138     "GL_EXT_texture_env_dot3",
 139     "GL_EXT_texture_filter_anisotropic",
 140     "GL_EXT_texture_lod_bias",
 141     "GL_EXT_texture_mirror_clamp",
 142     "GL_ATI_texture_env_combine3",
 143     "GL_ATI_texture_mirror_once",
 144     "GL_MESA_ycbcr_texture",
 145     "GL_NV_blend_square",
 146     "GL_SGIS_generate_mipmap",
 147     NULL
 148 };
 149
 150 extern const struct tnl_pipeline_stage _radeon_texrect_stage;
 151 extern const struct tnl_pipeline_stage _radeon_render_stage;
 152 extern const struct tnl_pipeline_stage _radeon_tcl_stage;
 153
 154 static const struct tnl_pipeline_stage *radeon_pipeline[] = {
 155
 156    /* Try and go straight to t&l
 157     */
 158    &_radeon_tcl_stage,
 159
 160    /* Catch any t&l fallbacks
 161     */
 162    &_tnl_vertex_transform_stage,
 163    &_tnl_normal_transform_stage,
 164    &_tnl_lighting_stage,
 165    &_tnl_fog_coordinate_stage,
 166    &_tnl_texgen_stage,
 167    &_tnl_texture_transform_stage,
 168
 169    /* Scale texture rectangle to 0..1.
 170     */
 171    &_radeon_texrect_stage,
 172
 173    &_radeon_render_stage,
 174    &_tnl_render_stage,          /* FALLBACK:  */
 175    0,
 176 };
 177
 178
 179
 180 /* Initialize the driver's misc functions.
 181  */
 182 static void radeonInitDriverFuncs( struct dd_function_table *functions )
 183 {
 184     functions->GetBufferSize    = radeonGetBufferSize;
 185     functions->ResizeBuffers    = _swrast_alloc_buffers;
 186     functions->GetString        = radeonGetString;
 187 }
 188
 189 static const struct dri_debug_control debug_control[] =
 190 {
 191     { "fall",  DEBUG_FALLBACKS },
 192     { "tex",   DEBUG_TEXTURE },
 193     { "ioctl", DEBUG_IOCTL },
 194     { "prim",  DEBUG_PRIMS },
 195     { "vert",  DEBUG_VERTS },
 196     { "state", DEBUG_STATE },
 197     { "code",  DEBUG_CODEGEN },
 198     { "vfmt",  DEBUG_VFMT },
 199     { "vtxf",  DEBUG_VFMT },
 200     { "verb",  DEBUG_VERBOSE },
 201     { "dri",   DEBUG_DRI },
 202     { "dma",   DEBUG_DMA },
 203     { "san",   DEBUG_SANITY },
 204     { NULL,    0 }
 205 };
 206
 207
 208 static int
 209 get_ust_nop( int64_t * ust )
 210 {
 211    *ust = 1;
 212    return 0;
 213 }
 214
 215
 216 /* Create the device specific context.
 217  */
 218 GLboolean
 219 radeonCreateContext( const __GLcontextModes *glVisual,
 220                      __DRIcontextPrivate *driContextPriv,
 221                      void *sharedContextPrivate)
 222 {
 223    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 224    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 225    struct dd_function_table functions;
 226    radeonContextPtr rmesa;
 227    GLcontext *ctx, *shareCtx;
 228    int i;
 229    int tcl_mode, fthrottle_mode;
 230
 231    assert(glVisual);
 232    assert(driContextPriv);
 233    assert(screen);
 234
 235    /* Allocate the Radeon context */
 236    rmesa = (radeonContextPtr) CALLOC( sizeof(*rmesa) );
 237    if ( !rmesa )
 238       return GL_FALSE;
 239
 240    /* Parse configuration files.
 241     * Do this here so that initialMaxAnisotropy is set before we create
 242     * the default textures.
 243     */
 244    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 245                         screen->driScreen->myNum, "radeon");
 246    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 247                                                  "def_max_anisotropy");
 248
 249    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 250       if ( sPriv->drmMinor < 13 )
 251          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 252                           "disabling.\n",sPriv->drmMinor );
 253       else
 254          rmesa->using_hyperz = GL_TRUE;
 255    }
 256
 257    /* Init default driver functions then plug in our Radeon-specific functions
 258     * (the texture functions are especially important)
 259     */
 260    _mesa_init_driver_functions( &functions );
 261    radeonInitDriverFuncs( &functions );
 262    radeonInitTextureFuncs( &functions );
 263
 264    /* Allocate the Mesa context */
 265    if (sharedContextPrivate)
 266       shareCtx = ((radeonContextPtr) sharedContextPrivate)->glCtx;
 267    else
 268       shareCtx = NULL;
 269    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 270                                        &functions, (void *) rmesa);
 271    if (!rmesa->glCtx) {
 272       FREE(rmesa);
 273       return GL_FALSE;
 274    }
 275    driContextPriv->driverPrivate = rmesa;
 276
 277    /* Init radeon context data */
 278    rmesa->dri.context = driContextPriv;
 279    rmesa->dri.screen = sPriv;
 280    rmesa->dri.drawable = NULL; /* Set by XMesaMakeCurrent */
 281    rmesa->dri.hwContext = driContextPriv->hHWContext;
 282    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 283    rmesa->dri.fd = sPriv->fd;
 284    rmesa->dri.drmMinor = sPriv->drmMinor;
 285
 286    rmesa->radeonScreen = screen;
 287    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 288                                        screen->sarea_priv_offset);
 289
 290
 291    rmesa->dma.buf0_address = rmesa->radeonScreen->buffers->list[0].address;
 292
 293    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 294    make_empty_list( & rmesa->swapped );
 295
 296    rmesa->nr_heaps = screen->numTexHeaps;
 297    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 298       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 299             screen->texSize[i],
 300             12,
 301             RADEON_NR_TEX_REGIONS,
 302             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 303             & rmesa->sarea->tex_age[i],
 304             & rmesa->swapped,
 305             sizeof( radeonTexObj ),
 306             (destroy_texture_object_t *) radeonDestroyTexObj );
 307
 308       driSetTextureSwapCounterLocation( rmesa->texture_heaps[i],
 309                                         & rmesa->c_textureSwaps );
 310    }
 311    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 312                                            "texture_depth");
 313    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 314       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 315          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 316
 317    rmesa->swtcl.RenderIndex = ~0;
 318    rmesa->hw.all_dirty = GL_TRUE;
 319
 320    /* Set the maximum texture size small enough that we can guarentee that
 321     * all texture units can bind a maximal texture and have them both in
 322     * texturable memory at once.
 323     */
 324
 325    ctx = rmesa->glCtx;
 326    ctx->Const.MaxTextureUnits = 2;
 327    ctx->Const.MaxTextureImageUnits = 2;
 328    ctx->Const.MaxTextureCoordUnits = 2;
 329
 330    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 331                                  rmesa->nr_heaps,
 332                                  & ctx->Const,
 333                                  4,
 334                                  11, /* max 2D texture size is 2048x2048 */
 335                                  0,  /* 3D textures unsupported. */
 336                                  0,  /* cube textures unsupported. */
 337                                  11, /* max rect texture size is 2048x2048. */
 338                                  12,
 339                                  GL_FALSE );
 340
 341    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 342
 343    /* No wide points.
 344     */
 345    ctx->Const.MinPointSize = 1.0;
 346    ctx->Const.MinPointSizeAA = 1.0;
 347    ctx->Const.MaxPointSize = 1.0;
 348    ctx->Const.MaxPointSizeAA = 1.0;
 349
 350    ctx->Const.MinLineWidth = 1.0;
 351    ctx->Const.MinLineWidthAA = 1.0;
 352    ctx->Const.MaxLineWidth = 10.0;
 353    ctx->Const.MaxLineWidthAA = 10.0;
 354    ctx->Const.LineWidthGranularity = 0.0625;
 355
 356    /* Set maxlocksize (and hence vb size) small enough to avoid
 357     * fallbacks in radeon_tcl.c.  ie. guarentee that all vertices can
 358     * fit in a single dma buffer for indexed rendering of quad strips,
 359     * etc.
 360     */
 361    ctx->Const.MaxArrayLockSize =
 362       MIN2( ctx->Const.MaxArrayLockSize,
 363             RADEON_BUFFER_SIZE / RADEON_MAX_TCL_VERTSIZE );
 364
 365    rmesa->boxes = 0;
 366
 367    /* Initialize the software rasterizer and helper modules.
 368     */
 369    _swrast_CreateContext( ctx );
 370    _ac_CreateContext( ctx );
 371    _tnl_CreateContext( ctx );
 372    _swsetup_CreateContext( ctx );
 373    _ae_create_context( ctx );
 374
 375    /* Install the customized pipeline:
 376     */
 377    _tnl_destroy_pipeline( ctx );
 378    _tnl_install_pipeline( ctx, radeon_pipeline );
 379    ctx->Driver.FlushVertices = radeonFlushVertices;
 380
 381    /* Try and keep materials and vertices separate:
 382     */
 383    _tnl_isolate_materials( ctx, GL_TRUE );
 384
 385
 386 /*     _mesa_allow_light_in_model( ctx, GL_FALSE ); */
 387
 388    /* Try and keep materials and vertices separate:
 389     */
 390    _tnl_isolate_materials( ctx, GL_TRUE );
 391
 392
 393    /* Configure swrast and T&L to match hardware characteristics:
 394     */
 395    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 396    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 397    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 398    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 399
 400
 401    _math_matrix_ctr( &rmesa->TexGenMatrix[0] );
 402    _math_matrix_ctr( &rmesa->TexGenMatrix[1] );
 403    _math_matrix_ctr( &rmesa->tmpmat );
 404    _math_matrix_set_identity( &rmesa->TexGenMatrix[0] );
 405    _math_matrix_set_identity( &rmesa->TexGenMatrix[1] );
 406    _math_matrix_set_identity( &rmesa->tmpmat );
 407
 408    driInitExtensions( ctx, card_extensions, GL_TRUE );
 409    if (rmesa->glCtx->Mesa_DXTn) {
 410       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 411       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 412    }
 413    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 414       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 415    }
 416
 417    if (rmesa->dri.drmMinor >= 9)
 418       _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
 419
 420    /* XXX these should really go right after _mesa_init_driver_functions() */
 421    radeonInitIoctlFuncs( ctx );
 422    radeonInitStateFuncs( ctx );
 423    radeonInitSpanFuncs( ctx );
 424    radeonInitState( rmesa );
 425    radeonInitSwtcl( ctx );
 426
 427    _mesa_vector4f_alloc( &rmesa->tcl.ObjClean, 0,
 428                          ctx->Const.MaxArrayLockSize, 32 );
 429
 430    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 431    rmesa->iw.irq_seq = -1;
 432    rmesa->irqsEmitted = 0;
 433    rmesa->do_irqs = (rmesa->radeonScreen->irq != 0 &&
 434                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS);
 435
 436    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 437
 438    rmesa->vblank_flags = (rmesa->radeonScreen->irq != 0)
 439        ? driGetDefaultVBlankFlags(&rmesa->optionCache) : VBLANK_FLAG_NO_IRQ;
 440
 441    rmesa->get_ust = (PFNGLXGETUSTPROC) glXGetProcAddress( (const GLubyte *) "__glXGetUST" );
 442    if ( rmesa->get_ust == NULL ) {
 443       rmesa->get_ust = get_ust_nop;
 444    }
 445    (*rmesa->get_ust)( & rmesa->swap_ust );
 446
 447
 448 #if DO_DEBUG
 449    RADEON_DEBUG = driParseDebugString( getenv( "RADEON_DEBUG" ),
 450                                        debug_control );
 451 #endif
 452
 453    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 454    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 455       fprintf(stderr, "disabling 3D acceleration\n");
 456       FALLBACK(rmesa, RADEON_FALLBACK_DISABLE, 1);
 457    } else if (tcl_mode == DRI_CONF_TCL_SW ||
 458               !(rmesa->radeonScreen->chipset & RADEON_CHIPSET_TCL)) {
 459       if (rmesa->radeonScreen->chipset & RADEON_CHIPSET_TCL) {
 460          rmesa->radeonScreen->chipset &= ~RADEON_CHIPSET_TCL;
 461          fprintf(stderr, "Disabling HW TCL support\n");
 462       }
 463       TCL_FALLBACK(rmesa->glCtx, RADEON_TCL_FALLBACK_TCL_DISABLE, 1);
 464    }
 465
 466    if (rmesa->radeonScreen->chipset & RADEON_CHIPSET_TCL) {
 467       if (tcl_mode >= DRI_CONF_TCL_VTXFMT)
 468          radeonVtxfmtInit( ctx, tcl_mode >= DRI_CONF_TCL_CODEGEN );
 469
 470       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE );
 471    }
 472    return GL_TRUE;
 473 }
 474
 475
 476 /* Destroy the device specific context.
 477  */
 478 /* Destroy the Mesa and driver specific context data.
 479  */
 480 void radeonDestroyContext( __DRIcontextPrivate *driContextPriv )
 481 {
 482    GET_CURRENT_CONTEXT(ctx);
 483    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 484    radeonContextPtr current = ctx ? RADEON_CONTEXT(ctx) : NULL;
 485
 486    /* check if we're deleting the currently bound context */
 487    if (rmesa == current) {
 488       RADEON_FIREVERTICES( rmesa );
 489       _mesa_make_current2(NULL, NULL, NULL);
 490    }
 491
 492    /* Free radeon context resources */
 493    assert(rmesa); /* should never be null */
 494    if ( rmesa ) {
 495       GLboolean   release_texture_heaps;
 496
 497
 498       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 499       _swsetup_DestroyContext( rmesa->glCtx );
 500       _tnl_DestroyContext( rmesa->glCtx );
 501       _ac_DestroyContext( rmesa->glCtx );
 502       _swrast_DestroyContext( rmesa->glCtx );
 503
 504       radeonDestroySwtcl( rmesa->glCtx );
 505       radeonReleaseArrays( rmesa->glCtx, ~0 );
 506       if (rmesa->dma.current.buf) {
 507          radeonReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 508          radeonFlushCmdBuf( rmesa, __FUNCTION__ );
 509       }
 510
 511       if (!(rmesa->TclFallback & RADEON_TCL_FALLBACK_TCL_DISABLE)) {
 512          int tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 513          if (tcl_mode >= DRI_CONF_TCL_VTXFMT)
 514             radeonVtxfmtDestroy( rmesa->glCtx );
 515       }
 516
 517       /* free the Mesa context */
 518       rmesa->glCtx->DriverCtx = NULL;
 519       _mesa_destroy_context( rmesa->glCtx );
 520
 521       _mesa_vector4f_free( &rmesa->tcl.ObjClean );
 522
 523       if (rmesa->state.scissor.pClipRects) {
 524          FREE(rmesa->state.scissor.pClipRects);
 525          rmesa->state.scissor.pClipRects = 0;
 526       }
 527
 528       if ( release_texture_heaps ) {
 529          /* This share group is about to go away, free our private
 530           * texture object data.
 531           */
 532          int i;
 533
 534          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 535             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 536             rmesa->texture_heaps[ i ] = NULL;
 537          }
 538
 539          assert( is_empty_list( & rmesa->swapped ) );
 540       }
 541
 542       /* free the option cache */
 543       driDestroyOptionCache (&rmesa->optionCache);
 544
 545       FREE( rmesa );
 546    }
 547 }
 548
 549
 550
 551
 552 void
 553 radeonSwapBuffers( __DRIdrawablePrivate *dPriv )
 554 {
 555
 556    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 557       radeonContextPtr rmesa;
 558       GLcontext *ctx;
 559       rmesa = (radeonContextPtr) dPriv->driContextPriv->driverPrivate;
 560       ctx = rmesa->glCtx;
 561       if (ctx->Visual.doubleBufferMode) {
 562          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 563
 564          if ( rmesa->doPageFlip ) {
 565             radeonPageFlip( dPriv );
 566          }
 567          else {
 568             radeonCopyBuffer( dPriv );
 569          }
 570       }
 571    }
 572    else {
 573       /* XXX this shouldn't be an error but we can't handle it for now */
 574       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 575    }
 576 }
 577
 578
 579 /* Force the context `c' to be the current context and associate with it
 580  * buffer `b'.
 581  */
 582 GLboolean
 583 radeonMakeCurrent( __DRIcontextPrivate *driContextPriv,
 584                    __DRIdrawablePrivate *driDrawPriv,
 585                    __DRIdrawablePrivate *driReadPriv )
 586 {
 587    if ( driContextPriv ) {
 588       radeonContextPtr newCtx =
 589          (radeonContextPtr) driContextPriv->driverPrivate;
 590
 591       if (RADEON_DEBUG & DEBUG_DRI)
 592          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) newCtx->glCtx);
 593
 594       if ( newCtx->dri.drawable != driDrawPriv ) {
 595          driDrawableInitVBlank( driDrawPriv, newCtx->vblank_flags );
 596          newCtx->dri.drawable = driDrawPriv;
 597          radeonUpdateWindow( newCtx->glCtx );
 598          radeonUpdateViewportOffset( newCtx->glCtx );
 599       }
 600
 601       _mesa_make_current2( newCtx->glCtx,
 602                            (GLframebuffer *) driDrawPriv->driverPrivate,
 603                            (GLframebuffer *) driReadPriv->driverPrivate );
 604
 605       if (newCtx->vb.enabled)
 606          radeonVtxfmtMakeCurrent( newCtx->glCtx );
 607
 608    } else {
 609       if (RADEON_DEBUG & DEBUG_DRI)
 610          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 611       _mesa_make_current( 0, 0 );
 612    }
 613
 614    if (RADEON_DEBUG & DEBUG_DRI)
 615       fprintf(stderr, "End %s\n", __FUNCTION__);
 616    return GL_TRUE;
 617 }
 618
 619 /* Force the context `c' to be unbound from its buffer.
 620  */
 621 GLboolean
 622 radeonUnbindContext( __DRIcontextPrivate *driContextPriv )
 623 {
 624    radeonContextPtr rmesa = (radeonContextPtr) driContextPriv->driverPrivate;
 625
 626    if (RADEON_DEBUG & DEBUG_DRI)
 627       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *) rmesa->glCtx);
 628
 629    return GL_TRUE;
 630 }