src/mesa/drivers/dri/r200/r200_context.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/r200/r200_context.c,v 1.3 2003/05/06 23:52:08 daenzer Exp $ */
   2 /*
   3 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   4
   5 The Weather Channel (TM) funded Tungsten Graphics to develop the
   6 initial release of the Radeon 8500 driver under the XFree86 license.
   7 This notice must be preserved.
   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  *   Keith Whitwell <keith@tungstengraphics.com>
  34  */
  35
  36 #include "glheader.h"
  37 #include "api_arrayelt.h"
  38 #include "context.h"
  39 #include "simple_list.h"
  40 #include "imports.h"
  41 #include "matrix.h"
  42 #include "extensions.h"
  43 #include "framebuffer.h"
  44 #include "state.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 "r200_context.h"
  56 #include "r200_ioctl.h"
  57 #include "r200_state.h"
  58 #include "r200_span.h"
  59 #include "r200_pixel.h"
  60 #include "r200_tex.h"
  61 #include "r200_swtcl.h"
  62 #include "r200_tcl.h"
  63 #include "r200_vtxfmt.h"
  64 #include "r200_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_ARB_vertex_program
  70 #define need_GL_EXT_blend_minmax
  71 #define need_GL_EXT_fog_coord
  72 #define need_GL_EXT_secondary_color
  73 #define need_GL_EXT_blend_equation_separate
  74 #define need_GL_EXT_blend_func_separate
  75 #define need_GL_NV_vertex_program
  76 #include "extension_helper.h"
  77
  78 #define DRIVER_DATE     "20041207"
  79
  80 #include "vblank.h"
  81 #include "utils.h"
  82 #include "xmlpool.h" /* for symbolic values of enum-type options */
  83 #ifndef R200_DEBUG
  84 int R200_DEBUG = (0);
  85 #endif
  86
  87
  88 /* Return the width and height of the given buffer.
  89  */
  90 static void r200GetBufferSize( GLframebuffer *buffer,
  91                                GLuint *width, GLuint *height )
  92 {
  93    GET_CURRENT_CONTEXT(ctx);
  94    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  95
  96    LOCK_HARDWARE( rmesa );
  97    *width  = rmesa->dri.drawable->w;
  98    *height = rmesa->dri.drawable->h;
  99    UNLOCK_HARDWARE( rmesa );
 100 }
 101
 102 /* Return various strings for glGetString().
 103  */
 104 static const GLubyte *r200GetString( GLcontext *ctx, GLenum name )
 105 {
 106    r200ContextPtr rmesa = R200_CONTEXT(ctx);
 107    static char buffer[128];
 108    unsigned   offset;
 109    GLuint agp_mode = rmesa->r200Screen->IsPCI ? 0 :
 110       rmesa->r200Screen->AGPMode;
 111
 112    switch ( name ) {
 113    case GL_VENDOR:
 114       return (GLubyte *)"Tungsten Graphics, Inc.";
 115
 116    case GL_RENDERER:
 117       offset = driGetRendererString( buffer, "R200", DRIVER_DATE,
 118                                      agp_mode );
 119
 120       sprintf( & buffer[ offset ], " %sTCL",
 121                !(rmesa->TclFallback & R200_TCL_FALLBACK_TCL_DISABLE)
 122                ? "" : "NO-" );
 123
 124       return (GLubyte *)buffer;
 125
 126    default:
 127       return NULL;
 128    }
 129 }
 130
 131
 132 /* Extension strings exported by the R200 driver.
 133  */
 134 static const struct dri_extension card_extensions[] =
 135 {
 136     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 137     { "GL_ARB_multitexture",               NULL },
 138     { "GL_ARB_texture_border_clamp",       NULL },
 139     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 140     { "GL_ARB_texture_env_add",            NULL },
 141     { "GL_ARB_texture_env_combine",        NULL },
 142     { "GL_ARB_texture_env_dot3",           NULL },
 143     { "GL_ARB_texture_mirrored_repeat",    NULL },
 144     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 145     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 146     { "GL_EXT_blend_subtract",             NULL },
 147     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 148     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 149     { "GL_EXT_stencil_wrap",               NULL },
 150     { "GL_EXT_texture_edge_clamp",         NULL },
 151     { "GL_EXT_texture_env_combine",        NULL },
 152     { "GL_EXT_texture_env_dot3",           NULL },
 153     { "GL_EXT_texture_filter_anisotropic", NULL },
 154     { "GL_EXT_texture_lod_bias",           NULL },
 155     { "GL_EXT_texture_mirror_clamp",       NULL },
 156     { "GL_EXT_texture_rectangle",          NULL },
 157     { "GL_ATI_texture_env_combine3",       NULL },
 158     { "GL_ATI_texture_mirror_once",        NULL },
 159     { "GL_MESA_pack_invert",               NULL },
 160     { "GL_NV_blend_square",                NULL },
 161     { "GL_SGIS_generate_mipmap",           NULL },
 162     { NULL,                                NULL }
 163 };
 164
 165 static const struct dri_extension blend_extensions[] = {
 166     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 167     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 168     { NULL,                                NULL }
 169 };
 170
 171 static const struct dri_extension ARB_vp_extension[] = {
 172     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions }
 173 };
 174
 175 static const struct dri_extension NV_vp_extension[] = {
 176     { "GL_NV_vertex_program",              GL_NV_vertex_program_functions }
 177 };
 178
 179 extern const struct tnl_pipeline_stage _r200_render_stage;
 180 extern const struct tnl_pipeline_stage _r200_tcl_stage;
 181
 182 static const struct tnl_pipeline_stage *r200_pipeline[] = {
 183
 184    /* Try and go straight to t&l
 185     */
 186    &_r200_tcl_stage,
 187
 188    /* Catch any t&l fallbacks
 189     */
 190    &_tnl_vertex_transform_stage,
 191    &_tnl_normal_transform_stage,
 192    &_tnl_lighting_stage,
 193    &_tnl_fog_coordinate_stage,
 194    &_tnl_texgen_stage,
 195    &_tnl_texture_transform_stage,
 196    &_tnl_vertex_program_stage,
 197
 198    /* Try again to go to tcl?
 199     *     - no good for asymmetric-twoside (do with multipass)
 200     *     - no good for asymmetric-unfilled (do with multipass)
 201     *     - good for material
 202     *     - good for texgen
 203     *     - need to manipulate a bit of state
 204     *
 205     * - worth it/not worth it?
 206     */
 207
 208    /* Else do them here.
 209     */
 210 /*    &_r200_render_stage,  */ /* FIXME: bugs with ut2003 */
 211    &_tnl_render_stage,          /* FALLBACK:  */
 212    NULL,
 213 };
 214
 215
 216
 217 /* Initialize the driver's misc functions.
 218  */
 219 static void r200InitDriverFuncs( struct dd_function_table *functions )
 220 {
 221     functions->GetBufferSize            = r200GetBufferSize;
 222     functions->ResizeBuffers            = _mesa_resize_framebuffer;
 223     functions->GetString                = r200GetString;
 224
 225     functions->Error                    = NULL;
 226     functions->DrawPixels               = NULL;
 227     functions->Bitmap                   = NULL;
 228 }
 229
 230 static const struct dri_debug_control debug_control[] =
 231 {
 232     { "fall",  DEBUG_FALLBACKS },
 233     { "tex",   DEBUG_TEXTURE },
 234     { "ioctl", DEBUG_IOCTL },
 235     { "prim",  DEBUG_PRIMS },
 236     { "vert",  DEBUG_VERTS },
 237     { "state", DEBUG_STATE },
 238     { "code",  DEBUG_CODEGEN },
 239     { "vfmt",  DEBUG_VFMT },
 240     { "vtxf",  DEBUG_VFMT },
 241     { "verb",  DEBUG_VERBOSE },
 242     { "dri",   DEBUG_DRI },
 243     { "dma",   DEBUG_DMA },
 244     { "san",   DEBUG_SANITY },
 245     { "sync",  DEBUG_SYNC },
 246     { "pix",   DEBUG_PIXEL },
 247     { "mem",   DEBUG_MEMORY },
 248     { NULL,    0 }
 249 };
 250
 251
 252 static int
 253 get_ust_nop( int64_t * ust )
 254 {
 255    *ust = 1;
 256    return 0;
 257 }
 258
 259
 260 /* Create the device specific rendering context.
 261  */
 262 GLboolean r200CreateContext( const __GLcontextModes *glVisual,
 263                              __DRIcontextPrivate *driContextPriv,
 264                              void *sharedContextPrivate)
 265 {
 266    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 267    r200ScreenPtr screen = (r200ScreenPtr)(sPriv->private);
 268    struct dd_function_table functions;
 269    r200ContextPtr rmesa;
 270    GLcontext *ctx, *shareCtx;
 271    int i;
 272    int tcl_mode, fthrottle_mode;
 273
 274    assert(glVisual);
 275    assert(driContextPriv);
 276    assert(screen);
 277
 278    /* Allocate the R200 context */
 279    rmesa = (r200ContextPtr) CALLOC( sizeof(*rmesa) );
 280    if ( !rmesa )
 281       return GL_FALSE;
 282
 283    /* init exp fog table data */
 284    r200InitStaticFogData();
 285
 286    /* Parse configuration files.
 287     * Do this here so that initialMaxAnisotropy is set before we create
 288     * the default textures.
 289     */
 290    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 291                         screen->driScreen->myNum, "r200");
 292    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 293                                                  "def_max_anisotropy");
 294
 295    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 296       if ( sPriv->drmMinor < 13 )
 297          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 298                           "disabling.\n",sPriv->drmMinor );
 299       else
 300          rmesa->using_hyperz = GL_TRUE;
 301    }
 302
 303    if ( sPriv->drmMinor >= 15 )
 304       rmesa->texmicrotile = GL_TRUE;
 305
 306    /* Init default driver functions then plug in our R200-specific functions
 307     * (the texture functions are especially important)
 308     */
 309    _mesa_init_driver_functions(&functions);
 310    r200InitDriverFuncs(&functions);
 311    r200InitIoctlFuncs(&functions);
 312    r200InitStateFuncs(&functions);
 313    r200InitTextureFuncs(&functions);
 314
 315    /* Allocate and initialize the Mesa context */
 316    if (sharedContextPrivate)
 317       shareCtx = ((r200ContextPtr) sharedContextPrivate)->glCtx;
 318    else
 319       shareCtx = NULL;
 320    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 321                                        &functions, (void *) rmesa);
 322    if (!rmesa->glCtx) {
 323       FREE(rmesa);
 324       return GL_FALSE;
 325    }
 326    driContextPriv->driverPrivate = rmesa;
 327
 328    /* Init r200 context data */
 329    rmesa->dri.context = driContextPriv;
 330    rmesa->dri.screen = sPriv;
 331    rmesa->dri.drawable = NULL; /* Set by XMesaMakeCurrent */
 332    rmesa->dri.hwContext = driContextPriv->hHWContext;
 333    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 334    rmesa->dri.fd = sPriv->fd;
 335    rmesa->dri.drmMinor = sPriv->drmMinor;
 336
 337    rmesa->r200Screen = screen;
 338    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 339                                        screen->sarea_priv_offset);
 340
 341
 342    rmesa->dma.buf0_address = rmesa->r200Screen->buffers->list[0].address;
 343
 344    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 345    make_empty_list( & rmesa->swapped );
 346
 347    rmesa->nr_heaps = 1 /* screen->numTexHeaps */ ;
 348    assert(rmesa->nr_heaps < R200_NR_TEX_HEAPS);
 349    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 350       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 351             screen->texSize[i],
 352             12,
 353             RADEON_NR_TEX_REGIONS,
 354             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 355             & rmesa->sarea->tex_age[i],
 356             & rmesa->swapped,
 357             sizeof( r200TexObj ),
 358             (destroy_texture_object_t *) r200DestroyTexObj );
 359    }
 360    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 361                                            "texture_depth");
 362    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 363       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 364          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 365
 366    rmesa->swtcl.RenderIndex = ~0;
 367    rmesa->hw.all_dirty = 1;
 368
 369    /* Set the maximum texture size small enough that we can guarentee that
 370     * all texture units can bind a maximal texture and have them both in
 371     * texturable memory at once.
 372     */
 373
 374    ctx = rmesa->glCtx;
 375    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 376                                                  "texture_units");
 377    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 378    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 379
 380    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 381                                  rmesa->nr_heaps,
 382                                  & ctx->Const,
 383                                  4,
 384                                  11, /* max 2D texture size is 2048x2048 */
 385 #if ENABLE_HW_3D_TEXTURE
 386                                  8,  /* max 3D texture size is 256^3 */
 387 #else
 388                                  0,  /* 3D textures unsupported */
 389 #endif
 390                                  11, /* max cube texture size is 2048x2048 */
 391                                  11, /* max texture rectangle size is 2048x2048 */
 392                                  12,
 393                                  GL_FALSE );
 394
 395    /* adjust max texture size a bit. Hack, but I really want to use larger textures
 396       which will work just fine in 99.999999% of all cases, especially with texture compression... */
 397    if (driQueryOptionb( &rmesa->optionCache, "texture_level_hack" ))
 398    {
 399      if (ctx->Const.MaxTextureLevels < 12) ctx->Const.MaxTextureLevels += 1;
 400    }
 401
 402    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 403
 404    /* No wide points.
 405     */
 406    ctx->Const.MinPointSize = 1.0;
 407    ctx->Const.MinPointSizeAA = 1.0;
 408    ctx->Const.MaxPointSize = 1.0;
 409    ctx->Const.MaxPointSizeAA = 1.0;
 410
 411    ctx->Const.MinLineWidth = 1.0;
 412    ctx->Const.MinLineWidthAA = 1.0;
 413    ctx->Const.MaxLineWidth = 10.0;
 414    ctx->Const.MaxLineWidthAA = 10.0;
 415    ctx->Const.LineWidthGranularity = 0.0625;
 416
 417    /* Initialize the software rasterizer and helper modules.
 418     */
 419    _swrast_CreateContext( ctx );
 420    _ac_CreateContext( ctx );
 421    _tnl_CreateContext( ctx );
 422    _swsetup_CreateContext( ctx );
 423    _ae_create_context( ctx );
 424
 425    /* Install the customized pipeline:
 426     */
 427    _tnl_destroy_pipeline( ctx );
 428    _tnl_install_pipeline( ctx, r200_pipeline );
 429    ctx->Driver.FlushVertices = r200FlushVertices;
 430
 431    /* Try and keep materials and vertices separate:
 432     */
 433    _tnl_isolate_materials( ctx, GL_TRUE );
 434
 435
 436    /* Configure swrast and TNL to match hardware characteristics:
 437     */
 438    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 439    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 440    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 441    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 442
 443
 444    for ( i = 0 ; i < R200_MAX_TEXTURE_UNITS ; i++ ) {
 445       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 446       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 447    }
 448    _math_matrix_ctr( &rmesa->tmpmat );
 449    _math_matrix_set_identity( &rmesa->tmpmat );
 450
 451    driInitExtensions( ctx, card_extensions, GL_TRUE );
 452    if (!(rmesa->r200Screen->chipset & R200_CHIPSET_YCBCR_BROKEN)) {
 453      /* yuv textures don't work with some chips - R200 / rv280 okay so far
 454         others get the bit ordering right but don't actually do YUV-RGB conversion */
 455       _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
 456    }
 457    if (rmesa->glCtx->Mesa_DXTn) {
 458       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 459       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 460    }
 461    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 462       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 463    }
 464
 465    if (rmesa->r200Screen->drmSupportsCubeMaps)
 466       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 467    if (rmesa->r200Screen->drmSupportsBlendColor) {
 468        driInitExtensions( ctx, blend_extensions, GL_FALSE );
 469    }
 470    if(driQueryOptionb(&rmesa->optionCache, "arb_vertex_program"))
 471       driInitSingleExtension( ctx, ARB_vp_extension );
 472    if(driQueryOptionb(&rmesa->optionCache, "nv_vertex_program"))
 473       driInitSingleExtension( ctx, NV_vp_extension );
 474
 475 #if 0
 476    r200InitDriverFuncs( ctx );
 477    r200InitIoctlFuncs( ctx );
 478    r200InitStateFuncs( ctx );
 479    r200InitTextureFuncs( ctx );
 480 #endif
 481    /* plug in a few more device driver functions */
 482    /* XXX these should really go right after _mesa_init_driver_functions() */
 483    r200InitPixelFuncs( ctx );
 484    r200InitSpanFuncs( ctx );
 485    r200InitTnlFuncs( ctx );
 486    r200InitState( rmesa );
 487    r200InitSwtcl( ctx );
 488
 489    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 490    rmesa->iw.irq_seq = -1;
 491    rmesa->irqsEmitted = 0;
 492    rmesa->do_irqs = (rmesa->dri.drmMinor >= 6 &&
 493                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS &&
 494                      rmesa->r200Screen->irq);
 495
 496    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 497
 498    if (!rmesa->do_irqs)
 499       fprintf(stderr,
 500               "IRQ's not enabled, falling back to %s: %d %d %d\n",
 501               rmesa->do_usleeps ? "usleeps" : "busy waits",
 502               rmesa->dri.drmMinor,
 503               fthrottle_mode,
 504               rmesa->r200Screen->irq);
 505
 506    rmesa->vblank_flags = (rmesa->r200Screen->irq != 0)
 507        ? driGetDefaultVBlankFlags(&rmesa->optionCache) : VBLANK_FLAG_NO_IRQ;
 508
 509    rmesa->prefer_gart_client_texturing =
 510       (getenv("R200_GART_CLIENT_TEXTURES") != 0);
 511
 512    rmesa->get_ust = (PFNGLXGETUSTPROC) glXGetProcAddress( (const GLubyte *) "__glXGetUST" );
 513    if ( rmesa->get_ust == NULL ) {
 514       rmesa->get_ust = get_ust_nop;
 515    }
 516    (*rmesa->get_ust)( & rmesa->swap_ust );
 517
 518
 519 #if DO_DEBUG
 520    R200_DEBUG  = driParseDebugString( getenv( "R200_DEBUG" ),
 521                                       debug_control );
 522    R200_DEBUG |= driParseDebugString( getenv( "RADEON_DEBUG" ),
 523                                       debug_control );
 524 #endif
 525
 526    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 527    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 528       fprintf(stderr, "disabling 3D acceleration\n");
 529       FALLBACK(rmesa, R200_FALLBACK_DISABLE, 1);
 530    }
 531    else if (tcl_mode == DRI_CONF_TCL_SW || getenv("R200_NO_TCL") ||
 532             !(rmesa->r200Screen->chipset & R200_CHIPSET_TCL)) {
 533       if (rmesa->r200Screen->chipset & R200_CHIPSET_TCL) {
 534          rmesa->r200Screen->chipset &= ~R200_CHIPSET_TCL;
 535          fprintf(stderr, "Disabling HW TCL support\n");
 536       }
 537       TCL_FALLBACK(rmesa->glCtx, R200_TCL_FALLBACK_TCL_DISABLE, 1);
 538    }
 539    if (rmesa->r200Screen->chipset & R200_CHIPSET_TCL) {
 540       if (tcl_mode >= DRI_CONF_TCL_VTXFMT && !getenv("R200_NO_VTXFMT")) {
 541          r200VtxfmtInit( ctx, tcl_mode >= DRI_CONF_TCL_CODEGEN );
 542       }
 543       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE );
 544    }
 545    return GL_TRUE;
 546 }
 547
 548
 549 /* Destroy the device specific context.
 550  */
 551 /* Destroy the Mesa and driver specific context data.
 552  */
 553 void r200DestroyContext( __DRIcontextPrivate *driContextPriv )
 554 {
 555    GET_CURRENT_CONTEXT(ctx);
 556    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 557    r200ContextPtr current = ctx ? R200_CONTEXT(ctx) : NULL;
 558
 559    /* check if we're deleting the currently bound context */
 560    if (rmesa == current) {
 561       R200_FIREVERTICES( rmesa );
 562       _mesa_make_current(NULL, NULL, NULL);
 563    }
 564
 565    /* Free r200 context resources */
 566    assert(rmesa); /* should never be null */
 567    if ( rmesa ) {
 568       GLboolean   release_texture_heaps;
 569
 570
 571       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 572       _swsetup_DestroyContext( rmesa->glCtx );
 573       _tnl_DestroyContext( rmesa->glCtx );
 574       _ac_DestroyContext( rmesa->glCtx );
 575       _swrast_DestroyContext( rmesa->glCtx );
 576
 577       r200DestroySwtcl( rmesa->glCtx );
 578       r200ReleaseArrays( rmesa->glCtx, ~0 );
 579
 580       if (rmesa->dma.current.buf) {
 581          r200ReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 582          r200FlushCmdBuf( rmesa, __FUNCTION__ );
 583       }
 584
 585       if (!(rmesa->TclFallback & R200_TCL_FALLBACK_TCL_DISABLE)) {
 586          int tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 587          if (tcl_mode >= DRI_CONF_TCL_VTXFMT)
 588             r200VtxfmtDestroy( rmesa->glCtx );
 589       }
 590
 591       /* free the Mesa context */
 592       rmesa->glCtx->DriverCtx = NULL;
 593       _mesa_destroy_context( rmesa->glCtx );
 594
 595       if (rmesa->state.scissor.pClipRects) {
 596          FREE(rmesa->state.scissor.pClipRects);
 597          rmesa->state.scissor.pClipRects = NULL;
 598       }
 599
 600       if ( release_texture_heaps ) {
 601          /* This share group is about to go away, free our private
 602           * texture object data.
 603           */
 604          int i;
 605
 606          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 607             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 608             rmesa->texture_heaps[ i ] = NULL;
 609          }
 610
 611          assert( is_empty_list( & rmesa->swapped ) );
 612       }
 613
 614       /* free the option cache */
 615       driDestroyOptionCache (&rmesa->optionCache);
 616
 617       FREE( rmesa );
 618    }
 619 }
 620
 621
 622
 623
 624 void
 625 r200SwapBuffers( __DRIdrawablePrivate *dPriv )
 626 {
 627    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 628       r200ContextPtr rmesa;
 629       GLcontext *ctx;
 630       rmesa = (r200ContextPtr) dPriv->driContextPriv->driverPrivate;
 631       ctx = rmesa->glCtx;
 632       if (ctx->Visual.doubleBufferMode) {
 633          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 634          if ( rmesa->doPageFlip ) {
 635             r200PageFlip( dPriv );
 636          }
 637          else {
 638             r200CopyBuffer( dPriv );
 639          }
 640       }
 641    }
 642    else {
 643       /* XXX this shouldn't be an error but we can't handle it for now */
 644       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 645    }
 646 }
 647
 648
 649 /* Force the context `c' to be the current context and associate with it
 650  * buffer `b'.
 651  */
 652 GLboolean
 653 r200MakeCurrent( __DRIcontextPrivate *driContextPriv,
 654                    __DRIdrawablePrivate *driDrawPriv,
 655                    __DRIdrawablePrivate *driReadPriv )
 656 {
 657    if ( driContextPriv ) {
 658       r200ContextPtr newCtx =
 659          (r200ContextPtr) driContextPriv->driverPrivate;
 660
 661       if (R200_DEBUG & DEBUG_DRI)
 662          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)newCtx->glCtx);
 663
 664       if ( newCtx->dri.drawable != driDrawPriv ) {
 665          driDrawableInitVBlank( driDrawPriv, newCtx->vblank_flags );
 666          newCtx->dri.drawable = driDrawPriv;
 667          r200UpdateWindow( newCtx->glCtx );
 668          r200UpdateViewportOffset( newCtx->glCtx );
 669       }
 670
 671       _mesa_make_current( newCtx->glCtx,
 672                           (GLframebuffer *) driDrawPriv->driverPrivate,
 673                           (GLframebuffer *) driReadPriv->driverPrivate );
 674
 675       if (newCtx->vb.enabled)
 676          r200VtxfmtMakeCurrent( newCtx->glCtx );
 677
 678       _mesa_update_state( newCtx->glCtx );
 679       r200ValidateState( newCtx->glCtx );
 680
 681    } else {
 682       if (R200_DEBUG & DEBUG_DRI)
 683          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 684       _mesa_make_current( NULL, NULL, NULL );
 685    }
 686
 687    if (R200_DEBUG & DEBUG_DRI)
 688       fprintf(stderr, "End %s\n", __FUNCTION__);
 689    return GL_TRUE;
 690 }
 691
 692 /* Force the context `c' to be unbound from its buffer.
 693  */
 694 GLboolean
 695 r200UnbindContext( __DRIcontextPrivate *driContextPriv )
 696 {
 697    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 698
 699    if (R200_DEBUG & DEBUG_DRI)
 700       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)rmesa->glCtx);
 701
 702    r200VtxfmtUnbindContext( rmesa->glCtx );
 703    return GL_TRUE;
 704 }