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 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 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 const struct dri_extension ARB_vp_extension[] = {
 172     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions }
 173 };
 174
 175 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 /* Create the device specific rendering context.
 253  */
 254 GLboolean r200CreateContext( const __GLcontextModes *glVisual,
 255                              __DRIcontextPrivate *driContextPriv,
 256                              void *sharedContextPrivate)
 257 {
 258    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 259    r200ScreenPtr screen = (r200ScreenPtr)(sPriv->private);
 260    struct dd_function_table functions;
 261    r200ContextPtr rmesa;
 262    GLcontext *ctx, *shareCtx;
 263    int i;
 264    int tcl_mode, fthrottle_mode;
 265
 266    assert(glVisual);
 267    assert(driContextPriv);
 268    assert(screen);
 269
 270    /* Allocate the R200 context */
 271    rmesa = (r200ContextPtr) CALLOC( sizeof(*rmesa) );
 272    if ( !rmesa )
 273       return GL_FALSE;
 274
 275    /* init exp fog table data */
 276    r200InitStaticFogData();
 277
 278    /* Parse configuration files.
 279     * Do this here so that initialMaxAnisotropy is set before we create
 280     * the default textures.
 281     */
 282    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 283                         screen->driScreen->myNum, "r200");
 284    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 285                                                  "def_max_anisotropy");
 286
 287    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 288       if ( sPriv->drmMinor < 13 )
 289          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 290                           "disabling.\n",sPriv->drmMinor );
 291       else
 292          rmesa->using_hyperz = GL_TRUE;
 293    }
 294
 295    if ( sPriv->drmMinor >= 15 )
 296       rmesa->texmicrotile = GL_TRUE;
 297
 298    /* Init default driver functions then plug in our R200-specific functions
 299     * (the texture functions are especially important)
 300     */
 301    _mesa_init_driver_functions(&functions);
 302    r200InitDriverFuncs(&functions);
 303    r200InitIoctlFuncs(&functions);
 304    r200InitStateFuncs(&functions);
 305    r200InitTextureFuncs(&functions);
 306
 307    /* Allocate and initialize the Mesa context */
 308    if (sharedContextPrivate)
 309       shareCtx = ((r200ContextPtr) sharedContextPrivate)->glCtx;
 310    else
 311       shareCtx = NULL;
 312    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 313                                        &functions, (void *) rmesa);
 314    if (!rmesa->glCtx) {
 315       FREE(rmesa);
 316       return GL_FALSE;
 317    }
 318    driContextPriv->driverPrivate = rmesa;
 319
 320    /* Init r200 context data */
 321    rmesa->dri.context = driContextPriv;
 322    rmesa->dri.screen = sPriv;
 323    rmesa->dri.drawable = NULL; /* Set by XMesaMakeCurrent */
 324    rmesa->dri.hwContext = driContextPriv->hHWContext;
 325    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 326    rmesa->dri.fd = sPriv->fd;
 327    rmesa->dri.drmMinor = sPriv->drmMinor;
 328
 329    rmesa->r200Screen = screen;
 330    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 331                                        screen->sarea_priv_offset);
 332
 333
 334    rmesa->dma.buf0_address = rmesa->r200Screen->buffers->list[0].address;
 335
 336    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 337    make_empty_list( & rmesa->swapped );
 338
 339    rmesa->nr_heaps = 1 /* screen->numTexHeaps */ ;
 340    assert(rmesa->nr_heaps < R200_NR_TEX_HEAPS);
 341    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 342       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 343             screen->texSize[i],
 344             12,
 345             RADEON_NR_TEX_REGIONS,
 346             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 347             & rmesa->sarea->tex_age[i],
 348             & rmesa->swapped,
 349             sizeof( r200TexObj ),
 350             (destroy_texture_object_t *) r200DestroyTexObj );
 351    }
 352    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 353                                            "texture_depth");
 354    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 355       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 356          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 357
 358    rmesa->swtcl.RenderIndex = ~0;
 359    rmesa->hw.all_dirty = 1;
 360
 361    /* Set the maximum texture size small enough that we can guarentee that
 362     * all texture units can bind a maximal texture and have them both in
 363     * texturable memory at once.
 364     */
 365
 366    ctx = rmesa->glCtx;
 367    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 368                                                  "texture_units");
 369    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 370    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 371
 372    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 373                                  rmesa->nr_heaps,
 374                                  & ctx->Const,
 375                                  4,
 376                                  11, /* max 2D texture size is 2048x2048 */
 377 #if ENABLE_HW_3D_TEXTURE
 378                                  8,  /* max 3D texture size is 256^3 */
 379 #else
 380                                  0,  /* 3D textures unsupported */
 381 #endif
 382                                  11, /* max cube texture size is 2048x2048 */
 383                                  11, /* max texture rectangle size is 2048x2048 */
 384                                  12,
 385                                  GL_FALSE );
 386
 387    /* adjust max texture size a bit. Hack, but I really want to use larger textures
 388       which will work just fine in 99.999999% of all cases, especially with texture compression... */
 389    if (driQueryOptionb( &rmesa->optionCache, "texture_level_hack" ))
 390    {
 391      if (ctx->Const.MaxTextureLevels < 12) ctx->Const.MaxTextureLevels += 1;
 392    }
 393
 394    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 395
 396    /* No wide points.
 397     */
 398    ctx->Const.MinPointSize = 1.0;
 399    ctx->Const.MinPointSizeAA = 1.0;
 400    ctx->Const.MaxPointSize = 1.0;
 401    ctx->Const.MaxPointSizeAA = 1.0;
 402
 403    ctx->Const.MinLineWidth = 1.0;
 404    ctx->Const.MinLineWidthAA = 1.0;
 405    ctx->Const.MaxLineWidth = 10.0;
 406    ctx->Const.MaxLineWidthAA = 10.0;
 407    ctx->Const.LineWidthGranularity = 0.0625;
 408
 409    /* Initialize the software rasterizer and helper modules.
 410     */
 411    _swrast_CreateContext( ctx );
 412    _ac_CreateContext( ctx );
 413    _tnl_CreateContext( ctx );
 414    _swsetup_CreateContext( ctx );
 415    _ae_create_context( ctx );
 416
 417    /* Install the customized pipeline:
 418     */
 419    _tnl_destroy_pipeline( ctx );
 420    _tnl_install_pipeline( ctx, r200_pipeline );
 421    ctx->Driver.FlushVertices = r200FlushVertices;
 422
 423    /* Try and keep materials and vertices separate:
 424     */
 425    _tnl_isolate_materials( ctx, GL_TRUE );
 426
 427
 428    /* Configure swrast and TNL to match hardware characteristics:
 429     */
 430    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 431    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 432    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 433    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 434
 435
 436    for ( i = 0 ; i < R200_MAX_TEXTURE_UNITS ; i++ ) {
 437       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 438       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 439    }
 440    _math_matrix_ctr( &rmesa->tmpmat );
 441    _math_matrix_set_identity( &rmesa->tmpmat );
 442
 443    driInitExtensions( ctx, card_extensions, GL_TRUE );
 444    if (!(rmesa->r200Screen->chipset & R200_CHIPSET_YCBCR_BROKEN)) {
 445      /* yuv textures don't work with some chips - R200 / rv280 okay so far
 446         others get the bit ordering right but don't actually do YUV-RGB conversion */
 447       _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
 448    }
 449    if (rmesa->glCtx->Mesa_DXTn) {
 450       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 451       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 452    }
 453    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 454       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 455    }
 456
 457    if (rmesa->r200Screen->drmSupportsCubeMaps)
 458       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 459    if (rmesa->r200Screen->drmSupportsBlendColor) {
 460        driInitExtensions( ctx, blend_extensions, GL_FALSE );
 461    }
 462    if(driQueryOptionb(&rmesa->optionCache, "arb_vertex_program"))
 463       driInitSingleExtension( ctx, ARB_vp_extension );
 464    if(driQueryOptionb(&rmesa->optionCache, "nv_vertex_program"))
 465       driInitSingleExtension( ctx, NV_vp_extension );
 466
 467 #if 0
 468    r200InitDriverFuncs( ctx );
 469    r200InitIoctlFuncs( ctx );
 470    r200InitStateFuncs( ctx );
 471    r200InitTextureFuncs( ctx );
 472 #endif
 473    /* plug in a few more device driver functions */
 474    /* XXX these should really go right after _mesa_init_driver_functions() */
 475    r200InitPixelFuncs( ctx );
 476    r200InitSpanFuncs( ctx );
 477    r200InitTnlFuncs( ctx );
 478    r200InitState( rmesa );
 479    r200InitSwtcl( ctx );
 480
 481    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 482    rmesa->iw.irq_seq = -1;
 483    rmesa->irqsEmitted = 0;
 484    rmesa->do_irqs = (rmesa->dri.drmMinor >= 6 &&
 485                      fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS &&
 486                      rmesa->r200Screen->irq);
 487
 488    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 489
 490    if (!rmesa->do_irqs)
 491       fprintf(stderr,
 492               "IRQ's not enabled, falling back to %s: %d %d %d\n",
 493               rmesa->do_usleeps ? "usleeps" : "busy waits",
 494               rmesa->dri.drmMinor,
 495               fthrottle_mode,
 496               rmesa->r200Screen->irq);
 497
 498    rmesa->vblank_flags = (rmesa->r200Screen->irq != 0)
 499        ? driGetDefaultVBlankFlags(&rmesa->optionCache) : VBLANK_FLAG_NO_IRQ;
 500
 501    rmesa->prefer_gart_client_texturing =
 502       (getenv("R200_GART_CLIENT_TEXTURES") != 0);
 503
 504    (*dri_interface->getUST)( & rmesa->swap_ust );
 505
 506
 507 #if DO_DEBUG
 508    R200_DEBUG  = driParseDebugString( getenv( "R200_DEBUG" ),
 509                                       debug_control );
 510    R200_DEBUG |= driParseDebugString( getenv( "RADEON_DEBUG" ),
 511                                       debug_control );
 512 #endif
 513
 514    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 515    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 516       fprintf(stderr, "disabling 3D acceleration\n");
 517       FALLBACK(rmesa, R200_FALLBACK_DISABLE, 1);
 518    }
 519    else if (tcl_mode == DRI_CONF_TCL_SW || getenv("R200_NO_TCL") ||
 520             !(rmesa->r200Screen->chipset & R200_CHIPSET_TCL)) {
 521       if (rmesa->r200Screen->chipset & R200_CHIPSET_TCL) {
 522          rmesa->r200Screen->chipset &= ~R200_CHIPSET_TCL;
 523          fprintf(stderr, "Disabling HW TCL support\n");
 524       }
 525       TCL_FALLBACK(rmesa->glCtx, R200_TCL_FALLBACK_TCL_DISABLE, 1);
 526    }
 527
 528    if (rmesa->r200Screen->chipset & R200_CHIPSET_TCL) {
 529       if (tcl_mode >= DRI_CONF_TCL_VTXFMT)
 530          r200VtxfmtInit( ctx, tcl_mode >= DRI_CONF_TCL_CODEGEN );
 531
 532       _tnl_need_dlist_norm_lengths( ctx, GL_FALSE );
 533    }
 534    return GL_TRUE;
 535 }
 536
 537
 538 /* Destroy the device specific context.
 539  */
 540 /* Destroy the Mesa and driver specific context data.
 541  */
 542 void r200DestroyContext( __DRIcontextPrivate *driContextPriv )
 543 {
 544    GET_CURRENT_CONTEXT(ctx);
 545    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 546    r200ContextPtr current = ctx ? R200_CONTEXT(ctx) : NULL;
 547
 548    /* check if we're deleting the currently bound context */
 549    if (rmesa == current) {
 550       R200_FIREVERTICES( rmesa );
 551       _mesa_make_current(NULL, NULL, NULL);
 552    }
 553
 554    /* Free r200 context resources */
 555    assert(rmesa); /* should never be null */
 556    if ( rmesa ) {
 557       GLboolean   release_texture_heaps;
 558
 559
 560       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 561       _swsetup_DestroyContext( rmesa->glCtx );
 562       _tnl_DestroyContext( rmesa->glCtx );
 563       _ac_DestroyContext( rmesa->glCtx );
 564       _swrast_DestroyContext( rmesa->glCtx );
 565
 566       r200DestroySwtcl( rmesa->glCtx );
 567       r200ReleaseArrays( rmesa->glCtx, ~0 );
 568
 569       if (rmesa->dma.current.buf) {
 570          r200ReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 571          r200FlushCmdBuf( rmesa, __FUNCTION__ );
 572       }
 573
 574       if (!(rmesa->TclFallback & R200_TCL_FALLBACK_TCL_DISABLE)) {
 575          int tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 576          if (tcl_mode >= DRI_CONF_TCL_VTXFMT)
 577             r200VtxfmtDestroy( rmesa->glCtx );
 578       }
 579
 580       /* free the Mesa context */
 581       rmesa->glCtx->DriverCtx = NULL;
 582       _mesa_destroy_context( rmesa->glCtx );
 583
 584       if (rmesa->state.scissor.pClipRects) {
 585          FREE(rmesa->state.scissor.pClipRects);
 586          rmesa->state.scissor.pClipRects = NULL;
 587       }
 588
 589       if ( release_texture_heaps ) {
 590          /* This share group is about to go away, free our private
 591           * texture object data.
 592           */
 593          int i;
 594
 595          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 596             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 597             rmesa->texture_heaps[ i ] = NULL;
 598          }
 599
 600          assert( is_empty_list( & rmesa->swapped ) );
 601       }
 602
 603       /* free the option cache */
 604       driDestroyOptionCache (&rmesa->optionCache);
 605
 606       FREE( rmesa );
 607    }
 608 }
 609
 610
 611
 612
 613 void
 614 r200SwapBuffers( __DRIdrawablePrivate *dPriv )
 615 {
 616    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 617       r200ContextPtr rmesa;
 618       GLcontext *ctx;
 619       rmesa = (r200ContextPtr) dPriv->driContextPriv->driverPrivate;
 620       ctx = rmesa->glCtx;
 621       if (ctx->Visual.doubleBufferMode) {
 622          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 623          if ( rmesa->doPageFlip ) {
 624             r200PageFlip( dPriv );
 625          }
 626          else {
 627             r200CopyBuffer( dPriv );
 628          }
 629       }
 630    }
 631    else {
 632       /* XXX this shouldn't be an error but we can't handle it for now */
 633       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 634    }
 635 }
 636
 637
 638 /* Force the context `c' to be the current context and associate with it
 639  * buffer `b'.
 640  */
 641 GLboolean
 642 r200MakeCurrent( __DRIcontextPrivate *driContextPriv,
 643                    __DRIdrawablePrivate *driDrawPriv,
 644                    __DRIdrawablePrivate *driReadPriv )
 645 {
 646    if ( driContextPriv ) {
 647       r200ContextPtr newCtx =
 648          (r200ContextPtr) driContextPriv->driverPrivate;
 649
 650       if (R200_DEBUG & DEBUG_DRI)
 651          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)newCtx->glCtx);
 652
 653       if ( newCtx->dri.drawable != driDrawPriv ) {
 654          driDrawableInitVBlank( driDrawPriv, newCtx->vblank_flags );
 655          newCtx->dri.drawable = driDrawPriv;
 656          r200UpdateWindow( newCtx->glCtx );
 657          r200UpdateViewportOffset( newCtx->glCtx );
 658       }
 659
 660       _mesa_make_current( newCtx->glCtx,
 661                           (GLframebuffer *) driDrawPriv->driverPrivate,
 662                           (GLframebuffer *) driReadPriv->driverPrivate );
 663
 664       if (newCtx->vb.enabled)
 665          r200VtxfmtMakeCurrent( newCtx->glCtx );
 666
 667       _mesa_update_state( newCtx->glCtx );
 668       r200ValidateState( newCtx->glCtx );
 669
 670    } else {
 671       if (R200_DEBUG & DEBUG_DRI)
 672          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 673       _mesa_make_current( NULL, NULL, NULL );
 674    }
 675
 676    if (R200_DEBUG & DEBUG_DRI)
 677       fprintf(stderr, "End %s\n", __FUNCTION__);
 678    return GL_TRUE;
 679 }
 680
 681 /* Force the context `c' to be unbound from its buffer.
 682  */
 683 GLboolean
 684 r200UnbindContext( __DRIcontextPrivate *driContextPriv )
 685 {
 686    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 687
 688    if (R200_DEBUG & DEBUG_DRI)
 689       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)rmesa->glCtx);
 690
 691    r200VtxfmtUnbindContext( rmesa->glCtx );
 692    return GL_TRUE;
 693 }