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

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /*
  31  * Authors:
  32  *   Keith Whitwell <keith@tungstengraphics.com>
  33  */
  34
  35 #include "main/glheader.h"
  36 #include "main/api_arrayelt.h"
  37 #include "main/context.h"
  38 #include "main/simple_list.h"
  39 #include "main/imports.h"
  40 #include "main/matrix.h"
  41 #include "main/extensions.h"
  42 #include "main/framebuffer.h"
  43 #include "main/state.h"
  44
  45 #include "swrast/swrast.h"
  46 #include "swrast_setup/swrast_setup.h"
  47 #include "vbo/vbo.h"
  48
  49 #include "tnl/tnl.h"
  50 #include "tnl/t_pipeline.h"
  51
  52 #include "drivers/common/driverfuncs.h"
  53
  54 #include "r200_context.h"
  55 #include "r200_ioctl.h"
  56 #include "r200_state.h"
  57 #include "r200_span.h"
  58 #include "r200_pixel.h"
  59 #include "r200_tex.h"
  60 #include "r200_swtcl.h"
  61 #include "r200_tcl.h"
  62 #include "r200_maos.h"
  63 #include "r200_vertprog.h"
  64
  65 #define need_GL_ARB_multisample
  66 #define need_GL_ARB_texture_compression
  67 #define need_GL_ARB_vertex_buffer_object
  68 #define need_GL_ARB_vertex_program
  69 #define need_GL_ATI_fragment_shader
  70 #define need_GL_EXT_blend_minmax
  71 #define need_GL_EXT_fog_coord
  72 #define need_GL_EXT_multi_draw_arrays
  73 #define need_GL_EXT_secondary_color
  74 #define need_GL_EXT_blend_equation_separate
  75 #define need_GL_EXT_blend_func_separate
  76 #define need_GL_NV_vertex_program
  77 #define need_GL_ARB_point_parameters
  78 #include "extension_helper.h"
  79
  80 #define DRIVER_DATE     "20060602"
  81
  82 #include "vblank.h"
  83 #include "utils.h"
  84 #include "xmlpool.h" /* for symbolic values of enum-type options */
  85
  86 /* Return various strings for glGetString().
  87  */
  88 static const GLubyte *r200GetString( GLcontext *ctx, GLenum name )
  89 {
  90    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  91    static char buffer[128];
  92    unsigned   offset;
  93    GLuint agp_mode = (rmesa->radeon.radeonScreen->card_type == RADEON_CARD_PCI)? 0 :
  94       rmesa->radeon.radeonScreen->AGPMode;
  95
  96    switch ( name ) {
  97    case GL_VENDOR:
  98       return (GLubyte *)"Tungsten Graphics, Inc.";
  99
 100    case GL_RENDERER:
 101       offset = driGetRendererString( buffer, "R200", DRIVER_DATE,
 102                                      agp_mode );
 103
 104       sprintf( & buffer[ offset ], " %sTCL",
 105                !(rmesa->radeon.TclFallback & R200_TCL_FALLBACK_TCL_DISABLE)
 106                ? "" : "NO-" );
 107
 108       return (GLubyte *)buffer;
 109
 110    default:
 111       return NULL;
 112    }
 113 }
 114
 115
 116 /* Extension strings exported by the R200 driver.
 117  */
 118 const struct dri_extension card_extensions[] =
 119 {
 120     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
 121     { "GL_ARB_multitexture",               NULL },
 122     { "GL_ARB_texture_border_clamp",       NULL },
 123     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 124     { "GL_ARB_texture_env_add",            NULL },
 125     { "GL_ARB_texture_env_combine",        NULL },
 126     { "GL_ARB_texture_env_dot3",           NULL },
 127     { "GL_ARB_texture_env_crossbar",       NULL },
 128     { "GL_ARB_texture_mirrored_repeat",    NULL },
 129     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
 130     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 131     { "GL_EXT_blend_subtract",             NULL },
 132     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 133     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
 134     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 135     { "GL_EXT_stencil_wrap",               NULL },
 136     { "GL_EXT_texture_edge_clamp",         NULL },
 137     { "GL_EXT_texture_env_combine",        NULL },
 138     { "GL_EXT_texture_env_dot3",           NULL },
 139     { "GL_EXT_texture_filter_anisotropic", NULL },
 140     { "GL_EXT_texture_lod_bias",           NULL },
 141     { "GL_EXT_texture_mirror_clamp",       NULL },
 142     { "GL_EXT_texture_rectangle",          NULL },
 143     { "GL_ATI_texture_env_combine3",       NULL },
 144     { "GL_ATI_texture_mirror_once",        NULL },
 145     { "GL_MESA_pack_invert",               NULL },
 146     { "GL_NV_blend_square",                NULL },
 147     { "GL_SGIS_generate_mipmap",           NULL },
 148     { NULL,                                NULL }
 149 };
 150
 151 const struct dri_extension blend_extensions[] = {
 152     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 153     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 154     { NULL,                                NULL }
 155 };
 156
 157 const struct dri_extension ARB_vp_extension[] = {
 158     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions }
 159 };
 160
 161 const struct dri_extension NV_vp_extension[] = {
 162     { "GL_NV_vertex_program",              GL_NV_vertex_program_functions }
 163 };
 164
 165 const struct dri_extension ATI_fs_extension[] = {
 166     { "GL_ATI_fragment_shader",            GL_ATI_fragment_shader_functions }
 167 };
 168
 169 const struct dri_extension point_extensions[] = {
 170     { "GL_ARB_point_sprite",               NULL },
 171     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 172     { NULL,                                NULL }
 173 };
 174
 175 extern const struct tnl_pipeline_stage _r200_render_stage;
 176 extern const struct tnl_pipeline_stage _r200_tcl_stage;
 177
 178 static const struct tnl_pipeline_stage *r200_pipeline[] = {
 179
 180    /* Try and go straight to t&l
 181     */
 182    &_r200_tcl_stage,
 183
 184    /* Catch any t&l fallbacks
 185     */
 186    &_tnl_vertex_transform_stage,
 187    &_tnl_normal_transform_stage,
 188    &_tnl_lighting_stage,
 189    &_tnl_fog_coordinate_stage,
 190    &_tnl_texgen_stage,
 191    &_tnl_texture_transform_stage,
 192    &_tnl_point_attenuation_stage,
 193    &_tnl_vertex_program_stage,
 194    /* Try again to go to tcl?
 195     *     - no good for asymmetric-twoside (do with multipass)
 196     *     - no good for asymmetric-unfilled (do with multipass)
 197     *     - good for material
 198     *     - good for texgen
 199     *     - need to manipulate a bit of state
 200     *
 201     * - worth it/not worth it?
 202     */
 203
 204    /* Else do them here.
 205     */
 206 /*    &_r200_render_stage,  */ /* FIXME: bugs with ut2003 */
 207    &_tnl_render_stage,          /* FALLBACK:  */
 208    NULL,
 209 };
 210
 211
 212
 213 /* Initialize the driver's misc functions.
 214  */
 215 static void r200InitDriverFuncs( struct dd_function_table *functions )
 216 {
 217     functions->GetBufferSize            = NULL; /* OBSOLETE */
 218     functions->GetString                = r200GetString;
 219 }
 220
 221 static const struct dri_debug_control debug_control[] =
 222 {
 223     { "fall",  DEBUG_FALLBACKS },
 224     { "tex",   DEBUG_TEXTURE },
 225     { "ioctl", DEBUG_IOCTL },
 226     { "prim",  DEBUG_PRIMS },
 227     { "vert",  DEBUG_VERTS },
 228     { "state", DEBUG_STATE },
 229     { "code",  DEBUG_CODEGEN },
 230     { "vfmt",  DEBUG_VFMT },
 231     { "vtxf",  DEBUG_VFMT },
 232     { "verb",  DEBUG_VERBOSE },
 233     { "dri",   DEBUG_DRI },
 234     { "dma",   DEBUG_DMA },
 235     { "san",   DEBUG_SANITY },
 236     { "sync",  DEBUG_SYNC },
 237     { "pix",   DEBUG_PIXEL },
 238     { "mem",   DEBUG_MEMORY },
 239     { NULL,    0 }
 240 };
 241
 242 static void r200_get_lock(radeonContextPtr radeon)
 243 {
 244    r200ContextPtr rmesa = (r200ContextPtr)radeon;
 245    drm_radeon_sarea_t *sarea = radeon->sarea;
 246    int i;
 247
 248    R200_STATECHANGE( rmesa, ctx );
 249    if (rmesa->radeon.sarea->tiling_enabled) {
 250       rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] |= R200_COLOR_TILE_ENABLE;
 251    }
 252    else rmesa->hw.ctx.cmd[CTX_RB3D_COLORPITCH] &= ~R200_COLOR_TILE_ENABLE;
 253
 254    if ( sarea->ctx_owner != rmesa->radeon.dri.hwContext ) {
 255       sarea->ctx_owner = rmesa->radeon.dri.hwContext;
 256    }
 257
 258    for ( i = 0 ; i < rmesa->radeon.nr_heaps ; i++ ) {
 259       DRI_AGE_TEXTURES( rmesa->radeon.texture_heaps[ i ] );
 260    }
 261 }
 262
 263
 264 static void r200_vtbl_flush(GLcontext *ctx)
 265 {
 266    R200_FIREVERTICES(R200_CONTEXT(ctx));
 267 }
 268
 269 static void r200_vtbl_set_all_dirty(GLcontext *ctx)
 270 {
 271    r200ContextPtr rmesa = R200_CONTEXT(ctx);
 272    rmesa->hw.all_dirty = GL_TRUE;
 273 }
 274
 275 static void r200_vtbl_emit_cs_header(struct radeon_cs *cs, radeonContextPtr rmesa)
 276 {
 277 }
 278
 279 static void r200_init_vtbl(radeonContextPtr radeon)
 280 {
 281    radeon->vtbl.get_lock = r200_get_lock;
 282    radeon->vtbl.update_viewport_offset = r200UpdateViewportOffset;
 283    radeon->vtbl.flush = r200_vtbl_flush;
 284    radeon->vtbl.set_all_dirty = r200_vtbl_set_all_dirty;
 285    radeon->vtbl.update_draw_buffer = r200UpdateDrawBuffer;
 286    radeon->vtbl.emit_cs_header = r200_vtbl_emit_cs_header;
 287 }
 288
 289
 290 /* Create the device specific rendering context.
 291  */
 292 GLboolean r200CreateContext( const __GLcontextModes *glVisual,
 293                              __DRIcontextPrivate *driContextPriv,
 294                              void *sharedContextPrivate)
 295 {
 296    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 297    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 298    struct dd_function_table functions;
 299    r200ContextPtr rmesa;
 300    GLcontext *ctx;
 301    int i;
 302    int tcl_mode;
 303
 304    assert(glVisual);
 305    assert(driContextPriv);
 306    assert(screen);
 307
 308    /* Allocate the R200 context */
 309    rmesa = (r200ContextPtr) CALLOC( sizeof(*rmesa) );
 310    if ( !rmesa )
 311       return GL_FALSE;
 312
 313    r200_init_vtbl(&rmesa->radeon);
 314    /* init exp fog table data */
 315    r200InitStaticFogData();
 316
 317    /* Parse configuration files.
 318     * Do this here so that initialMaxAnisotropy is set before we create
 319     * the default textures.
 320     */
 321    driParseConfigFiles (&rmesa->radeon.optionCache, &screen->optionCache,
 322                         screen->driScreen->myNum, "r200");
 323    rmesa->radeon.initialMaxAnisotropy = driQueryOptionf(&rmesa->radeon.optionCache,
 324                                                         "def_max_anisotropy");
 325
 326    if ( driQueryOptionb( &rmesa->radeon.optionCache, "hyperz" ) ) {
 327       if ( sPriv->drm_version.minor < 13 )
 328          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 329                           "disabling.\n", sPriv->drm_version.minor );
 330       else
 331          rmesa->using_hyperz = GL_TRUE;
 332    }
 333
 334    if ( sPriv->drm_version.minor >= 15 )
 335       rmesa->texmicrotile = GL_TRUE;
 336
 337    /* Init default driver functions then plug in our R200-specific functions
 338     * (the texture functions are especially important)
 339     */
 340    _mesa_init_driver_functions(&functions);
 341    r200InitDriverFuncs(&functions);
 342    r200InitIoctlFuncs(&functions);
 343    r200InitStateFuncs(&functions);
 344    r200InitTextureFuncs(&functions);
 345    r200InitShaderFuncs(&functions);
 346
 347    if (!radeonInitContext(&rmesa->radeon, &functions,
 348                           glVisual, driContextPriv,
 349                           sharedContextPrivate)) {
 350      FREE(rmesa);
 351      return GL_FALSE;
 352    }
 353
 354
 355    rmesa->dma.buf0_address = rmesa->radeon.radeonScreen->buffers->list[0].address;
 356
 357    (void) memset( rmesa->radeon.texture_heaps, 0, sizeof( rmesa->radeon.texture_heaps ) );
 358    make_empty_list( & rmesa->radeon.swapped );
 359
 360    rmesa->radeon.nr_heaps = 1 /* screen->numTexHeaps */ ;
 361    assert(rmesa->radeon.nr_heaps < RADEON_NR_TEX_HEAPS);
 362    for ( i = 0 ; i < rmesa->radeon.nr_heaps ; i++ ) {
 363       rmesa->radeon.texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 364             screen->texSize[i],
 365             12,
 366             RADEON_NR_TEX_REGIONS,
 367             (drmTextureRegionPtr)rmesa->radeon.sarea->tex_list[i],
 368             & rmesa->radeon.sarea->tex_age[i],
 369             & rmesa->radeon.swapped,
 370             sizeof( radeonTexObj ),
 371             (destroy_texture_object_t *) r200DestroyTexObj );
 372    }
 373    rmesa->radeon.texture_depth = driQueryOptioni (&rmesa->radeon.optionCache,
 374                                            "texture_depth");
 375    if (rmesa->radeon.texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 376       rmesa->radeon.texture_depth = ( screen->cpp == 4 ) ?
 377          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 378
 379    rmesa->swtcl.RenderIndex = ~0;
 380    rmesa->hw.all_dirty = 1;
 381
 382    /* Set the maximum texture size small enough that we can guarentee that
 383     * all texture units can bind a maximal texture and have all of them in
 384     * texturable memory at once. Depending on the allow_large_textures driconf
 385     * setting allow larger textures.
 386     */
 387
 388    ctx = rmesa->radeon.glCtx;
 389    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->radeon.optionCache,
 390                                                  "texture_units");
 391    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 392    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 393
 394    i = driQueryOptioni( &rmesa->radeon.optionCache, "allow_large_textures");
 395
 396    driCalculateMaxTextureLevels( rmesa->radeon.texture_heaps,
 397                                  rmesa->radeon.nr_heaps,
 398                                  & ctx->Const,
 399                                  4,
 400                                  11, /* max 2D texture size is 2048x2048 */
 401 #if ENABLE_HW_3D_TEXTURE
 402                                  8,  /* max 3D texture size is 256^3 */
 403 #else
 404                                  0,  /* 3D textures unsupported */
 405 #endif
 406                                  11, /* max cube texture size is 2048x2048 */
 407                                  11, /* max texture rectangle size is 2048x2048 */
 408                                  12,
 409                                  GL_FALSE,
 410                                  i );
 411
 412    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 413
 414    /* No wide AA points.
 415     */
 416    ctx->Const.MinPointSize = 1.0;
 417    ctx->Const.MinPointSizeAA = 1.0;
 418    ctx->Const.MaxPointSizeAA = 1.0;
 419    ctx->Const.PointSizeGranularity = 0.0625;
 420    if (rmesa->radeon.radeonScreen->drmSupportsPointSprites)
 421       ctx->Const.MaxPointSize = 2047.0;
 422    else
 423       ctx->Const.MaxPointSize = 1.0;
 424
 425    /* mesa initialization problem - _mesa_init_point was already called */
 426    ctx->Point.MaxSize = ctx->Const.MaxPointSize;
 427
 428    ctx->Const.MinLineWidth = 1.0;
 429    ctx->Const.MinLineWidthAA = 1.0;
 430    ctx->Const.MaxLineWidth = 10.0;
 431    ctx->Const.MaxLineWidthAA = 10.0;
 432    ctx->Const.LineWidthGranularity = 0.0625;
 433
 434    ctx->Const.VertexProgram.MaxNativeInstructions = R200_VSF_MAX_INST;
 435    ctx->Const.VertexProgram.MaxNativeAttribs = 12;
 436    ctx->Const.VertexProgram.MaxNativeTemps = R200_VSF_MAX_TEMPS;
 437    ctx->Const.VertexProgram.MaxNativeParameters = R200_VSF_MAX_PARAM;
 438    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 439
 440    /* Initialize the software rasterizer and helper modules.
 441     */
 442    _swrast_CreateContext( ctx );
 443    _vbo_CreateContext( ctx );
 444    _tnl_CreateContext( ctx );
 445    _swsetup_CreateContext( ctx );
 446    _ae_create_context( ctx );
 447
 448    /* Install the customized pipeline:
 449     */
 450    _tnl_destroy_pipeline( ctx );
 451    _tnl_install_pipeline( ctx, r200_pipeline );
 452
 453    /* Try and keep materials and vertices separate:
 454     */
 455 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 456
 457
 458    /* Configure swrast and TNL to match hardware characteristics:
 459     */
 460    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 461    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 462    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 463    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 464
 465
 466    for ( i = 0 ; i < R200_MAX_TEXTURE_UNITS ; i++ ) {
 467       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 468       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 469    }
 470    _math_matrix_ctr( &rmesa->tmpmat );
 471    _math_matrix_set_identity( &rmesa->tmpmat );
 472
 473    driInitExtensions( ctx, card_extensions, GL_TRUE );
 474    if (!(rmesa->radeon.radeonScreen->chip_flags & R200_CHIPSET_YCBCR_BROKEN)) {
 475      /* yuv textures don't work with some chips - R200 / rv280 okay so far
 476         others get the bit ordering right but don't actually do YUV-RGB conversion */
 477       _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
 478    }
 479    if (rmesa->radeon.glCtx->Mesa_DXTn) {
 480       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 481       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 482    }
 483    else if (driQueryOptionb (&rmesa->radeon.optionCache, "force_s3tc_enable")) {
 484       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 485    }
 486
 487    if (rmesa->radeon.radeonScreen->drmSupportsCubeMapsR200)
 488       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 489    if (rmesa->radeon.radeonScreen->drmSupportsBlendColor) {
 490        driInitExtensions( ctx, blend_extensions, GL_FALSE );
 491    }
 492    if(rmesa->radeon.radeonScreen->drmSupportsVertexProgram)
 493       driInitSingleExtension( ctx, ARB_vp_extension );
 494    if(driQueryOptionb(&rmesa->radeon.optionCache, "nv_vertex_program"))
 495       driInitSingleExtension( ctx, NV_vp_extension );
 496
 497    if ((ctx->Const.MaxTextureUnits == 6) && rmesa->radeon.radeonScreen->drmSupportsFragShader)
 498       driInitSingleExtension( ctx, ATI_fs_extension );
 499    if (rmesa->radeon.radeonScreen->drmSupportsPointSprites)
 500       driInitExtensions( ctx, point_extensions, GL_FALSE );
 501 #if 0
 502    r200InitDriverFuncs( ctx );
 503    r200InitIoctlFuncs( ctx );
 504    r200InitStateFuncs( ctx );
 505    r200InitTextureFuncs( ctx );
 506 #endif
 507    /* plug in a few more device driver functions */
 508    /* XXX these should really go right after _mesa_init_driver_functions() */
 509    r200InitPixelFuncs( ctx );
 510    r200InitSpanFuncs( ctx );
 511    r200InitTnlFuncs( ctx );
 512    r200InitState( rmesa );
 513    r200InitSwtcl( ctx );
 514
 515    rmesa->prefer_gart_client_texturing =
 516       (getenv("R200_GART_CLIENT_TEXTURES") != 0);
 517
 518 #if DO_DEBUG
 519    R200_DEBUG  = driParseDebugString( getenv( "R200_DEBUG" ),
 520                                       debug_control );
 521    R200_DEBUG |= driParseDebugString( getenv( "RADEON_DEBUG" ),
 522                                       debug_control );
 523 #endif
 524
 525    tcl_mode = driQueryOptioni(&rmesa->radeon.optionCache, "tcl_mode");
 526    if (driQueryOptionb(&rmesa->radeon.optionCache, "no_rast")) {
 527       fprintf(stderr, "disabling 3D acceleration\n");
 528       FALLBACK(rmesa, R200_FALLBACK_DISABLE, 1);
 529    }
 530    else if (tcl_mode == DRI_CONF_TCL_SW || getenv("R200_NO_TCL") ||
 531             !(rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL)) {
 532       if (rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 533          rmesa->radeon.radeonScreen->chip_flags &= ~RADEON_CHIPSET_TCL;
 534          fprintf(stderr, "Disabling HW TCL support\n");
 535       }
 536       TCL_FALLBACK(rmesa->radeon.glCtx, R200_TCL_FALLBACK_TCL_DISABLE, 1);
 537    }
 538
 539    return GL_TRUE;
 540 }
 541
 542
 543 /* Destroy the device specific context.
 544  */
 545 /* Destroy the Mesa and driver specific context data.
 546  */
 547 void r200DestroyContext( __DRIcontextPrivate *driContextPriv )
 548 {
 549    GET_CURRENT_CONTEXT(ctx);
 550    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 551    r200ContextPtr current = ctx ? R200_CONTEXT(ctx) : NULL;
 552
 553    /* check if we're deleting the currently bound context */
 554    if (rmesa == current) {
 555       R200_FIREVERTICES( rmesa );
 556       _mesa_make_current(NULL, NULL, NULL);
 557    }
 558
 559    /* Free r200 context resources */
 560    assert(rmesa); /* should never be null */
 561    if ( rmesa ) {
 562       GLboolean   release_texture_heaps;
 563
 564
 565       release_texture_heaps = (rmesa->radeon.glCtx->Shared->RefCount == 1);
 566       _swsetup_DestroyContext( rmesa->radeon.glCtx );
 567       _tnl_DestroyContext( rmesa->radeon.glCtx );
 568       _vbo_DestroyContext( rmesa->radeon.glCtx );
 569       _swrast_DestroyContext( rmesa->radeon.glCtx );
 570
 571       r200DestroySwtcl( rmesa->radeon.glCtx );
 572       r200ReleaseArrays( rmesa->radeon.glCtx, ~0 );
 573
 574       if (rmesa->dma.current.buf) {
 575         //       r200ReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 576          rcommonFlushCmdBuf( &rmesa->radeon, __FUNCTION__ );
 577       }
 578
 579       if (rmesa->radeon.state.scissor.pClipRects) {
 580          FREE(rmesa->radeon.state.scissor.pClipRects);
 581          rmesa->radeon.state.scissor.pClipRects = NULL;
 582       }
 583
 584
 585       if ( release_texture_heaps ) {
 586          /* This share group is about to go away, free our private
 587           * texture object data.
 588           */
 589          int i;
 590
 591          for ( i = 0 ; i < rmesa->radeon.nr_heaps ; i++ ) {
 592             driDestroyTextureHeap( rmesa->radeon.texture_heaps[ i ] );
 593             rmesa->radeon.texture_heaps[ i ] = NULL;
 594          }
 595
 596          assert( is_empty_list( & rmesa->radeon.swapped ) );
 597       }
 598
 599       radeonCleanupContext(&rmesa->radeon);
 600
 601       FREE( rmesa );
 602    }
 603 }
 604
 605
 606
 607 /* Force the context `c' to be unbound from its buffer.
 608  */
 609 GLboolean
 610 r200UnbindContext( __DRIcontextPrivate *driContextPriv )
 611 {
 612    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 613
 614    if (R200_DEBUG & DEBUG_DRI)
 615       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)rmesa->radeon.glCtx);
 616
 617    return GL_TRUE;
 618 }