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_flush_vertices(radeonContextPtr rmesa)
 270 {
 271   R200_FIREVERTICES(((r200ContextPtr)rmesa));
 272 }
 273
 274 static void r200_vtbl_set_all_dirty(GLcontext *ctx)
 275 {
 276    r200ContextPtr rmesa = R200_CONTEXT(ctx);
 277    rmesa->hw.all_dirty = GL_TRUE;
 278 }
 279
 280 static void r200_vtbl_emit_cs_header(struct radeon_cs *cs, radeonContextPtr rmesa)
 281 {
 282 }
 283
 284 static void r200_vtbl_emit_state(radeonContextPtr rmesa)
 285 {
 286         r200EmitState((r200ContextPtr)rmesa);
 287 }
 288
 289
 290 static void r200_init_vtbl(radeonContextPtr radeon)
 291 {
 292    radeon->vtbl.get_lock = r200_get_lock;
 293    radeon->vtbl.update_viewport_offset = r200UpdateViewportOffset;
 294    radeon->vtbl.flush = r200_vtbl_flush;
 295    radeon->vtbl.flush_vertices = r200_vtbl_flush_vertices;
 296    radeon->vtbl.set_all_dirty = r200_vtbl_set_all_dirty;
 297    radeon->vtbl.update_draw_buffer = r200UpdateDrawBuffer;
 298    radeon->vtbl.emit_cs_header = r200_vtbl_emit_cs_header;
 299    radeon->vtbl.emit_state = r200_vtbl_emit_state;
 300    radeon->vtbl.swtcl_flush = r200_swtcl_flush;
 301 }
 302
 303
 304 /* Create the device specific rendering context.
 305  */
 306 GLboolean r200CreateContext( const __GLcontextModes *glVisual,
 307                              __DRIcontextPrivate *driContextPriv,
 308                              void *sharedContextPrivate)
 309 {
 310    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 311    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 312    struct dd_function_table functions;
 313    r200ContextPtr rmesa;
 314    GLcontext *ctx;
 315    int i;
 316    int tcl_mode;
 317
 318    assert(glVisual);
 319    assert(driContextPriv);
 320    assert(screen);
 321
 322    /* Allocate the R200 context */
 323    rmesa = (r200ContextPtr) CALLOC( sizeof(*rmesa) );
 324    if ( !rmesa )
 325       return GL_FALSE;
 326
 327    r200_init_vtbl(&rmesa->radeon);
 328    /* init exp fog table data */
 329    r200InitStaticFogData();
 330
 331    /* Parse configuration files.
 332     * Do this here so that initialMaxAnisotropy is set before we create
 333     * the default textures.
 334     */
 335    driParseConfigFiles (&rmesa->radeon.optionCache, &screen->optionCache,
 336                         screen->driScreen->myNum, "r200");
 337    rmesa->radeon.initialMaxAnisotropy = driQueryOptionf(&rmesa->radeon.optionCache,
 338                                                         "def_max_anisotropy");
 339
 340    if ( driQueryOptionb( &rmesa->radeon.optionCache, "hyperz" ) ) {
 341       if ( sPriv->drm_version.minor < 13 )
 342          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 343                           "disabling.\n", sPriv->drm_version.minor );
 344       else
 345          rmesa->using_hyperz = GL_TRUE;
 346    }
 347
 348    if ( sPriv->drm_version.minor >= 15 )
 349       rmesa->texmicrotile = GL_TRUE;
 350
 351    /* Init default driver functions then plug in our R200-specific functions
 352     * (the texture functions are especially important)
 353     */
 354    _mesa_init_driver_functions(&functions);
 355    r200InitDriverFuncs(&functions);
 356    r200InitIoctlFuncs(&functions);
 357    r200InitStateFuncs(&functions);
 358    r200InitTextureFuncs(&functions);
 359    r200InitShaderFuncs(&functions);
 360
 361    if (!radeonInitContext(&rmesa->radeon, &functions,
 362                           glVisual, driContextPriv,
 363                           sharedContextPrivate)) {
 364      FREE(rmesa);
 365      return GL_FALSE;
 366    }
 367
 368
 369    (void) memset( rmesa->radeon.texture_heaps, 0, sizeof( rmesa->radeon.texture_heaps ) );
 370    make_empty_list( & rmesa->radeon.swapped );
 371
 372    rmesa->radeon.nr_heaps = 1 /* screen->numTexHeaps */ ;
 373    assert(rmesa->radeon.nr_heaps < RADEON_NR_TEX_HEAPS);
 374 #if 0
 375    for ( i = 0 ; i < rmesa->radeon.nr_heaps ; i++ ) {
 376       rmesa->radeon.texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 377             screen->texSize[i],
 378             12,
 379             RADEON_NR_TEX_REGIONS,
 380             (drmTextureRegionPtr)rmesa->radeon.sarea->tex_list[i],
 381             & rmesa->radeon.sarea->tex_age[i],
 382             & rmesa->radeon.swapped,
 383             sizeof( radeonTexObj ),
 384             (destroy_texture_object_t *) r200DestroyTexObj );
 385    }
 386 #endif
 387    rmesa->radeon.texture_depth = driQueryOptioni (&rmesa->radeon.optionCache,
 388                                            "texture_depth");
 389    if (rmesa->radeon.texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 390       rmesa->radeon.texture_depth = ( screen->cpp == 4 ) ?
 391          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 392
 393    rmesa->radeon.swtcl.RenderIndex = ~0;
 394    rmesa->hw.all_dirty = 1;
 395
 396    /* Set the maximum texture size small enough that we can guarentee that
 397     * all texture units can bind a maximal texture and have all of them in
 398     * texturable memory at once. Depending on the allow_large_textures driconf
 399     * setting allow larger textures.
 400     */
 401
 402    ctx = rmesa->radeon.glCtx;
 403    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->radeon.optionCache,
 404                                                  "texture_units");
 405    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 406    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 407
 408    i = driQueryOptioni( &rmesa->radeon.optionCache, "allow_large_textures");
 409
 410    driCalculateMaxTextureLevels( rmesa->radeon.texture_heaps,
 411                                  rmesa->radeon.nr_heaps,
 412                                  & ctx->Const,
 413                                  4,
 414                                  11, /* max 2D texture size is 2048x2048 */
 415 #if ENABLE_HW_3D_TEXTURE
 416                                  8,  /* max 3D texture size is 256^3 */
 417 #else
 418                                  0,  /* 3D textures unsupported */
 419 #endif
 420                                  11, /* max cube texture size is 2048x2048 */
 421                                  11, /* max texture rectangle size is 2048x2048 */
 422                                  12,
 423                                  GL_FALSE,
 424                                  i );
 425
 426    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 427
 428    /* No wide AA points.
 429     */
 430    ctx->Const.MinPointSize = 1.0;
 431    ctx->Const.MinPointSizeAA = 1.0;
 432    ctx->Const.MaxPointSizeAA = 1.0;
 433    ctx->Const.PointSizeGranularity = 0.0625;
 434    if (rmesa->radeon.radeonScreen->drmSupportsPointSprites)
 435       ctx->Const.MaxPointSize = 2047.0;
 436    else
 437       ctx->Const.MaxPointSize = 1.0;
 438
 439    /* mesa initialization problem - _mesa_init_point was already called */
 440    ctx->Point.MaxSize = ctx->Const.MaxPointSize;
 441
 442    ctx->Const.MinLineWidth = 1.0;
 443    ctx->Const.MinLineWidthAA = 1.0;
 444    ctx->Const.MaxLineWidth = 10.0;
 445    ctx->Const.MaxLineWidthAA = 10.0;
 446    ctx->Const.LineWidthGranularity = 0.0625;
 447
 448    ctx->Const.VertexProgram.MaxNativeInstructions = R200_VSF_MAX_INST;
 449    ctx->Const.VertexProgram.MaxNativeAttribs = 12;
 450    ctx->Const.VertexProgram.MaxNativeTemps = R200_VSF_MAX_TEMPS;
 451    ctx->Const.VertexProgram.MaxNativeParameters = R200_VSF_MAX_PARAM;
 452    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 453
 454    /* Initialize the software rasterizer and helper modules.
 455     */
 456    _swrast_CreateContext( ctx );
 457    _vbo_CreateContext( ctx );
 458    _tnl_CreateContext( ctx );
 459    _swsetup_CreateContext( ctx );
 460    _ae_create_context( ctx );
 461
 462    /* Install the customized pipeline:
 463     */
 464    _tnl_destroy_pipeline( ctx );
 465    _tnl_install_pipeline( ctx, r200_pipeline );
 466
 467    /* Try and keep materials and vertices separate:
 468     */
 469 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 470
 471
 472    /* Configure swrast and TNL to match hardware characteristics:
 473     */
 474    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 475    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 476    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 477    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 478
 479
 480    for ( i = 0 ; i < R200_MAX_TEXTURE_UNITS ; i++ ) {
 481       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 482       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 483    }
 484    _math_matrix_ctr( &rmesa->tmpmat );
 485    _math_matrix_set_identity( &rmesa->tmpmat );
 486
 487    driInitExtensions( ctx, card_extensions, GL_TRUE );
 488    if (!(rmesa->radeon.radeonScreen->chip_flags & R200_CHIPSET_YCBCR_BROKEN)) {
 489      /* yuv textures don't work with some chips - R200 / rv280 okay so far
 490         others get the bit ordering right but don't actually do YUV-RGB conversion */
 491       _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
 492    }
 493    if (rmesa->radeon.glCtx->Mesa_DXTn) {
 494       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 495       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 496    }
 497    else if (driQueryOptionb (&rmesa->radeon.optionCache, "force_s3tc_enable")) {
 498       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 499    }
 500
 501    if (rmesa->radeon.radeonScreen->drmSupportsCubeMapsR200)
 502       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 503    if (rmesa->radeon.radeonScreen->drmSupportsBlendColor) {
 504        driInitExtensions( ctx, blend_extensions, GL_FALSE );
 505    }
 506    if(rmesa->radeon.radeonScreen->drmSupportsVertexProgram)
 507       driInitSingleExtension( ctx, ARB_vp_extension );
 508    if(driQueryOptionb(&rmesa->radeon.optionCache, "nv_vertex_program"))
 509       driInitSingleExtension( ctx, NV_vp_extension );
 510
 511    if ((ctx->Const.MaxTextureUnits == 6) && rmesa->radeon.radeonScreen->drmSupportsFragShader)
 512       driInitSingleExtension( ctx, ATI_fs_extension );
 513    if (rmesa->radeon.radeonScreen->drmSupportsPointSprites)
 514       driInitExtensions( ctx, point_extensions, GL_FALSE );
 515 #if 0
 516    r200InitDriverFuncs( ctx );
 517    r200InitIoctlFuncs( ctx );
 518    r200InitStateFuncs( ctx );
 519    r200InitTextureFuncs( ctx );
 520 #endif
 521    /* plug in a few more device driver functions */
 522    /* XXX these should really go right after _mesa_init_driver_functions() */
 523    r200InitPixelFuncs( ctx );
 524    r200InitSpanFuncs( ctx );
 525    r200InitTnlFuncs( ctx );
 526    r200InitState( rmesa );
 527    r200InitSwtcl( ctx );
 528
 529    rmesa->prefer_gart_client_texturing =
 530       (getenv("R200_GART_CLIENT_TEXTURES") != 0);
 531
 532 #if DO_DEBUG
 533    R200_DEBUG  = driParseDebugString( getenv( "R200_DEBUG" ),
 534                                       debug_control );
 535    R200_DEBUG |= driParseDebugString( getenv( "RADEON_DEBUG" ),
 536                                       debug_control );
 537 #endif
 538
 539    tcl_mode = driQueryOptioni(&rmesa->radeon.optionCache, "tcl_mode");
 540    if (driQueryOptionb(&rmesa->radeon.optionCache, "no_rast")) {
 541       fprintf(stderr, "disabling 3D acceleration\n");
 542       FALLBACK(rmesa, R200_FALLBACK_DISABLE, 1);
 543    }
 544    else if (tcl_mode == DRI_CONF_TCL_SW || getenv("R200_NO_TCL") ||
 545             !(rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL)) {
 546       if (rmesa->radeon.radeonScreen->chip_flags & RADEON_CHIPSET_TCL) {
 547          rmesa->radeon.radeonScreen->chip_flags &= ~RADEON_CHIPSET_TCL;
 548          fprintf(stderr, "Disabling HW TCL support\n");
 549       }
 550       TCL_FALLBACK(rmesa->radeon.glCtx, R200_TCL_FALLBACK_TCL_DISABLE, 1);
 551    }
 552
 553    return GL_TRUE;
 554 }
 555
 556
 557 /* Destroy the device specific context.
 558  */
 559 /* Destroy the Mesa and driver specific context data.
 560  */
 561 void r200DestroyContext( __DRIcontextPrivate *driContextPriv )
 562 {
 563    GET_CURRENT_CONTEXT(ctx);
 564    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 565    r200ContextPtr current = ctx ? R200_CONTEXT(ctx) : NULL;
 566
 567    /* check if we're deleting the currently bound context */
 568    if (rmesa == current) {
 569       R200_FIREVERTICES( rmesa );
 570       _mesa_make_current(NULL, NULL, NULL);
 571    }
 572
 573    /* Free r200 context resources */
 574    assert(rmesa); /* should never be null */
 575    if ( rmesa ) {
 576       GLboolean   release_texture_heaps;
 577
 578
 579       release_texture_heaps = (rmesa->radeon.glCtx->Shared->RefCount == 1);
 580       _swsetup_DestroyContext( rmesa->radeon.glCtx );
 581       _tnl_DestroyContext( rmesa->radeon.glCtx );
 582       _vbo_DestroyContext( rmesa->radeon.glCtx );
 583       _swrast_DestroyContext( rmesa->radeon.glCtx );
 584
 585       r200DestroySwtcl( rmesa->radeon.glCtx );
 586       r200ReleaseArrays( rmesa->radeon.glCtx, ~0 );
 587
 588       if (rmesa->radeon.dma.current) {
 589          rcommonFlushCmdBuf( &rmesa->radeon, __FUNCTION__ );
 590       }
 591
 592       if (rmesa->radeon.state.scissor.pClipRects) {
 593          FREE(rmesa->radeon.state.scissor.pClipRects);
 594          rmesa->radeon.state.scissor.pClipRects = NULL;
 595       }
 596
 597
 598       if ( release_texture_heaps ) {
 599          /* This share group is about to go away, free our private
 600           * texture object data.
 601           */
 602          int i;
 603
 604          for ( i = 0 ; i < rmesa->radeon.nr_heaps ; i++ ) {
 605             driDestroyTextureHeap( rmesa->radeon.texture_heaps[ i ] );
 606             rmesa->radeon.texture_heaps[ i ] = NULL;
 607          }
 608
 609          assert( is_empty_list( & rmesa->radeon.swapped ) );
 610       }
 611
 612       radeonCleanupContext(&rmesa->radeon);
 613
 614       FREE( rmesa );
 615    }
 616 }
 617
 618
 619
 620 /* Force the context `c' to be unbound from its buffer.
 621  */
 622 GLboolean
 623 r200UnbindContext( __DRIcontextPrivate *driContextPriv )
 624 {
 625    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 626
 627    if (R200_DEBUG & DEBUG_DRI)
 628       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)rmesa->radeon.glCtx);
 629
 630    return GL_TRUE;
 631 }