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_vertex_program
  66 #define need_GL_ATI_fragment_shader
  67 #define need_GL_EXT_blend_minmax
  68 #define need_GL_EXT_fog_coord
  69 #define need_GL_EXT_secondary_color
  70 #define need_GL_EXT_blend_equation_separate
  71 #define need_GL_EXT_blend_func_separate
  72 #define need_GL_NV_vertex_program
  73 #define need_GL_ARB_point_parameters
  74 #include "extension_helper.h"
  75
  76 #define DRIVER_DATE     "20060602"
  77
  78 #include "vblank.h"
  79 #include "utils.h"
  80 #include "xmlpool.h" /* for symbolic values of enum-type options */
  81 #ifndef R200_DEBUG
  82 int R200_DEBUG = (0);
  83 #endif
  84
  85 /* Return various strings for glGetString().
  86  */
  87 static const GLubyte *r200GetString( GLcontext *ctx, GLenum name )
  88 {
  89    r200ContextPtr rmesa = R200_CONTEXT(ctx);
  90    static char buffer[128];
  91    unsigned   offset;
  92    GLuint agp_mode = (rmesa->r200Screen->card_type == RADEON_CARD_PCI)? 0 :
  93       rmesa->r200Screen->AGPMode;
  94
  95    switch ( name ) {
  96    case GL_VENDOR:
  97       return (GLubyte *)"Tungsten Graphics, Inc.";
  98
  99    case GL_RENDERER:
 100       offset = driGetRendererString( buffer, "R200", DRIVER_DATE,
 101                                      agp_mode );
 102
 103       sprintf( & buffer[ offset ], " %sTCL",
 104                !(rmesa->TclFallback & R200_TCL_FALLBACK_TCL_DISABLE)
 105                ? "" : "NO-" );
 106
 107       return (GLubyte *)buffer;
 108
 109    default:
 110       return NULL;
 111    }
 112 }
 113
 114
 115 /* Extension strings exported by the R200 driver.
 116  */
 117 const struct dri_extension card_extensions[] =
 118 {
 119     { "GL_ARB_multitexture",               NULL },
 120     { "GL_ARB_texture_border_clamp",       NULL },
 121     { "GL_ARB_texture_env_add",            NULL },
 122     { "GL_ARB_texture_env_combine",        NULL },
 123     { "GL_ARB_texture_env_dot3",           NULL },
 124     { "GL_ARB_texture_env_crossbar",       NULL },
 125     { "GL_ARB_texture_mirrored_repeat",    NULL },
 126     { "GL_EXT_blend_minmax",               GL_EXT_blend_minmax_functions },
 127     { "GL_EXT_blend_subtract",             NULL },
 128     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
 129     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 130     { "GL_EXT_stencil_wrap",               NULL },
 131     { "GL_EXT_texture_edge_clamp",         NULL },
 132     { "GL_EXT_texture_env_combine",        NULL },
 133     { "GL_EXT_texture_env_dot3",           NULL },
 134     { "GL_EXT_texture_filter_anisotropic", NULL },
 135     { "GL_EXT_texture_lod_bias",           NULL },
 136     { "GL_EXT_texture_mirror_clamp",       NULL },
 137     { "GL_EXT_texture_rectangle",          NULL },
 138     { "GL_ATI_texture_env_combine3",       NULL },
 139     { "GL_ATI_texture_mirror_once",        NULL },
 140     { "GL_MESA_pack_invert",               NULL },
 141     { "GL_NV_blend_square",                NULL },
 142     { "GL_SGIS_generate_mipmap",           NULL },
 143     { NULL,                                NULL }
 144 };
 145
 146 const struct dri_extension blend_extensions[] = {
 147     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 148     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
 149     { NULL,                                NULL }
 150 };
 151
 152 const struct dri_extension ARB_vp_extension[] = {
 153     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions }
 154 };
 155
 156 const struct dri_extension NV_vp_extension[] = {
 157     { "GL_NV_vertex_program",              GL_NV_vertex_program_functions }
 158 };
 159
 160 const struct dri_extension ATI_fs_extension[] = {
 161     { "GL_ATI_fragment_shader",            GL_ATI_fragment_shader_functions }
 162 };
 163
 164 const struct dri_extension point_extensions[] = {
 165     { "GL_ARB_point_sprite",               NULL },
 166     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 167     { NULL,                                NULL }
 168 };
 169
 170 extern const struct tnl_pipeline_stage _r200_render_stage;
 171 extern const struct tnl_pipeline_stage _r200_tcl_stage;
 172
 173 static const struct tnl_pipeline_stage *r200_pipeline[] = {
 174
 175    /* Try and go straight to t&l
 176     */
 177    &_r200_tcl_stage,
 178
 179    /* Catch any t&l fallbacks
 180     */
 181    &_tnl_vertex_transform_stage,
 182    &_tnl_normal_transform_stage,
 183    &_tnl_lighting_stage,
 184    &_tnl_fog_coordinate_stage,
 185    &_tnl_texgen_stage,
 186    &_tnl_texture_transform_stage,
 187    &_tnl_point_attenuation_stage,
 188    &_tnl_vertex_program_stage,
 189    /* Try again to go to tcl?
 190     *     - no good for asymmetric-twoside (do with multipass)
 191     *     - no good for asymmetric-unfilled (do with multipass)
 192     *     - good for material
 193     *     - good for texgen
 194     *     - need to manipulate a bit of state
 195     *
 196     * - worth it/not worth it?
 197     */
 198
 199    /* Else do them here.
 200     */
 201 /*    &_r200_render_stage,  */ /* FIXME: bugs with ut2003 */
 202    &_tnl_render_stage,          /* FALLBACK:  */
 203    NULL,
 204 };
 205
 206
 207
 208 /* Initialize the driver's misc functions.
 209  */
 210 static void r200InitDriverFuncs( struct dd_function_table *functions )
 211 {
 212     functions->GetBufferSize            = NULL; /* OBSOLETE */
 213     functions->GetString                = r200GetString;
 214 }
 215
 216 static const struct dri_debug_control debug_control[] =
 217 {
 218     { "fall",  DEBUG_FALLBACKS },
 219     { "tex",   DEBUG_TEXTURE },
 220     { "ioctl", DEBUG_IOCTL },
 221     { "prim",  DEBUG_PRIMS },
 222     { "vert",  DEBUG_VERTS },
 223     { "state", DEBUG_STATE },
 224     { "code",  DEBUG_CODEGEN },
 225     { "vfmt",  DEBUG_VFMT },
 226     { "vtxf",  DEBUG_VFMT },
 227     { "verb",  DEBUG_VERBOSE },
 228     { "dri",   DEBUG_DRI },
 229     { "dma",   DEBUG_DMA },
 230     { "san",   DEBUG_SANITY },
 231     { "sync",  DEBUG_SYNC },
 232     { "pix",   DEBUG_PIXEL },
 233     { "mem",   DEBUG_MEMORY },
 234     { NULL,    0 }
 235 };
 236
 237
 238 /* Create the device specific rendering context.
 239  */
 240 GLboolean r200CreateContext( const __GLcontextModes *glVisual,
 241                              __DRIcontextPrivate *driContextPriv,
 242                              void *sharedContextPrivate)
 243 {
 244    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 245    radeonScreenPtr screen = (radeonScreenPtr)(sPriv->private);
 246    struct dd_function_table functions;
 247    r200ContextPtr rmesa;
 248    GLcontext *ctx, *shareCtx;
 249    int i;
 250    int tcl_mode, fthrottle_mode;
 251
 252    assert(glVisual);
 253    assert(driContextPriv);
 254    assert(screen);
 255
 256    /* Allocate the R200 context */
 257    rmesa = (r200ContextPtr) CALLOC( sizeof(*rmesa) );
 258    if ( !rmesa )
 259       return GL_FALSE;
 260
 261    /* init exp fog table data */
 262    r200InitStaticFogData();
 263
 264    /* Parse configuration files.
 265     * Do this here so that initialMaxAnisotropy is set before we create
 266     * the default textures.
 267     */
 268    driParseConfigFiles (&rmesa->optionCache, &screen->optionCache,
 269                         screen->driScreen->myNum, "r200");
 270    rmesa->initialMaxAnisotropy = driQueryOptionf(&rmesa->optionCache,
 271                                                  "def_max_anisotropy");
 272
 273    if ( driQueryOptionb( &rmesa->optionCache, "hyperz" ) ) {
 274       if ( sPriv->drm_version.minor < 13 )
 275          fprintf( stderr, "DRM version 1.%d too old to support HyperZ, "
 276                           "disabling.\n", sPriv->drm_version.minor );
 277       else
 278          rmesa->using_hyperz = GL_TRUE;
 279    }
 280
 281    if ( sPriv->drm_version.minor >= 15 )
 282       rmesa->texmicrotile = GL_TRUE;
 283
 284    /* Init default driver functions then plug in our R200-specific functions
 285     * (the texture functions are especially important)
 286     */
 287    _mesa_init_driver_functions(&functions);
 288    r200InitDriverFuncs(&functions);
 289    r200InitIoctlFuncs(&functions);
 290    r200InitStateFuncs(&functions);
 291    r200InitTextureFuncs(&functions);
 292    r200InitShaderFuncs(&functions);
 293
 294    /* Allocate and initialize the Mesa context */
 295    if (sharedContextPrivate)
 296       shareCtx = ((r200ContextPtr) sharedContextPrivate)->glCtx;
 297    else
 298       shareCtx = NULL;
 299    rmesa->glCtx = _mesa_create_context(glVisual, shareCtx,
 300                                        &functions, (void *) rmesa);
 301    if (!rmesa->glCtx) {
 302       FREE(rmesa);
 303       return GL_FALSE;
 304    }
 305    driContextPriv->driverPrivate = rmesa;
 306
 307    /* Init r200 context data */
 308    rmesa->dri.context = driContextPriv;
 309    rmesa->dri.screen = sPriv;
 310    rmesa->dri.drawable = NULL; /* Set by XMesaMakeCurrent */
 311    rmesa->dri.hwContext = driContextPriv->hHWContext;
 312    rmesa->dri.hwLock = &sPriv->pSAREA->lock;
 313    rmesa->dri.fd = sPriv->fd;
 314    rmesa->dri.drmMinor = sPriv->drm_version.minor;
 315
 316    rmesa->r200Screen = screen;
 317    rmesa->sarea = (drm_radeon_sarea_t *)((GLubyte *)sPriv->pSAREA +
 318                                        screen->sarea_priv_offset);
 319
 320
 321    rmesa->dma.buf0_address = rmesa->r200Screen->buffers->list[0].address;
 322
 323    (void) memset( rmesa->texture_heaps, 0, sizeof( rmesa->texture_heaps ) );
 324    make_empty_list( & rmesa->swapped );
 325
 326    rmesa->nr_heaps = 1 /* screen->numTexHeaps */ ;
 327    assert(rmesa->nr_heaps < RADEON_NR_TEX_HEAPS);
 328    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 329       rmesa->texture_heaps[i] = driCreateTextureHeap( i, rmesa,
 330             screen->texSize[i],
 331             12,
 332             RADEON_NR_TEX_REGIONS,
 333             (drmTextureRegionPtr)rmesa->sarea->tex_list[i],
 334             & rmesa->sarea->tex_age[i],
 335             & rmesa->swapped,
 336             sizeof( r200TexObj ),
 337             (destroy_texture_object_t *) r200DestroyTexObj );
 338    }
 339    rmesa->texture_depth = driQueryOptioni (&rmesa->optionCache,
 340                                            "texture_depth");
 341    if (rmesa->texture_depth == DRI_CONF_TEXTURE_DEPTH_FB)
 342       rmesa->texture_depth = ( screen->cpp == 4 ) ?
 343          DRI_CONF_TEXTURE_DEPTH_32 : DRI_CONF_TEXTURE_DEPTH_16;
 344
 345    rmesa->swtcl.RenderIndex = ~0;
 346    rmesa->hw.all_dirty = 1;
 347
 348    /* Set the maximum texture size small enough that we can guarentee that
 349     * all texture units can bind a maximal texture and have all of them in
 350     * texturable memory at once. Depending on the allow_large_textures driconf
 351     * setting allow larger textures.
 352     */
 353
 354    ctx = rmesa->glCtx;
 355    ctx->Const.MaxTextureUnits = driQueryOptioni (&rmesa->optionCache,
 356                                                  "texture_units");
 357    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 358    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 359
 360    i = driQueryOptioni( &rmesa->optionCache, "allow_large_textures");
 361
 362    driCalculateMaxTextureLevels( rmesa->texture_heaps,
 363                                  rmesa->nr_heaps,
 364                                  & ctx->Const,
 365                                  4,
 366                                  11, /* max 2D texture size is 2048x2048 */
 367 #if ENABLE_HW_3D_TEXTURE
 368                                  8,  /* max 3D texture size is 256^3 */
 369 #else
 370                                  0,  /* 3D textures unsupported */
 371 #endif
 372                                  11, /* max cube texture size is 2048x2048 */
 373                                  11, /* max texture rectangle size is 2048x2048 */
 374                                  12,
 375                                  GL_FALSE,
 376                                  i );
 377
 378    ctx->Const.MaxTextureMaxAnisotropy = 16.0;
 379
 380    /* No wide AA points.
 381     */
 382    ctx->Const.MinPointSize = 1.0;
 383    ctx->Const.MinPointSizeAA = 1.0;
 384    ctx->Const.MaxPointSizeAA = 1.0;
 385    ctx->Const.PointSizeGranularity = 0.0625;
 386    if (rmesa->r200Screen->drmSupportsPointSprites)
 387       ctx->Const.MaxPointSize = 2047.0;
 388    else
 389       ctx->Const.MaxPointSize = 1.0;
 390
 391    /* mesa initialization problem - _mesa_init_point was already called */
 392    ctx->Point.MaxSize = ctx->Const.MaxPointSize;
 393
 394    ctx->Const.MinLineWidth = 1.0;
 395    ctx->Const.MinLineWidthAA = 1.0;
 396    ctx->Const.MaxLineWidth = 10.0;
 397    ctx->Const.MaxLineWidthAA = 10.0;
 398    ctx->Const.LineWidthGranularity = 0.0625;
 399
 400    ctx->Const.VertexProgram.MaxNativeInstructions = R200_VSF_MAX_INST;
 401    ctx->Const.VertexProgram.MaxNativeAttribs = 12;
 402    ctx->Const.VertexProgram.MaxNativeTemps = R200_VSF_MAX_TEMPS;
 403    ctx->Const.VertexProgram.MaxNativeParameters = R200_VSF_MAX_PARAM;
 404    ctx->Const.VertexProgram.MaxNativeAddressRegs = 1;
 405
 406    ctx->Const.MaxDrawBuffers = 1;
 407
 408    /* Initialize the software rasterizer and helper modules.
 409     */
 410    _swrast_CreateContext( ctx );
 411    _vbo_CreateContext( ctx );
 412    _tnl_CreateContext( ctx );
 413    _swsetup_CreateContext( ctx );
 414    _ae_create_context( ctx );
 415
 416    /* Install the customized pipeline:
 417     */
 418    _tnl_destroy_pipeline( ctx );
 419    _tnl_install_pipeline( ctx, r200_pipeline );
 420
 421    /* Try and keep materials and vertices separate:
 422     */
 423 /*    _tnl_isolate_materials( ctx, GL_TRUE ); */
 424
 425
 426    /* Configure swrast and TNL to match hardware characteristics:
 427     */
 428    _swrast_allow_pixel_fog( ctx, GL_FALSE );
 429    _swrast_allow_vertex_fog( ctx, GL_TRUE );
 430    _tnl_allow_pixel_fog( ctx, GL_FALSE );
 431    _tnl_allow_vertex_fog( ctx, GL_TRUE );
 432
 433
 434    for ( i = 0 ; i < R200_MAX_TEXTURE_UNITS ; i++ ) {
 435       _math_matrix_ctr( &rmesa->TexGenMatrix[i] );
 436       _math_matrix_set_identity( &rmesa->TexGenMatrix[i] );
 437    }
 438    _math_matrix_ctr( &rmesa->tmpmat );
 439    _math_matrix_set_identity( &rmesa->tmpmat );
 440
 441    driInitExtensions( ctx, card_extensions, GL_TRUE );
 442    if (!(rmesa->r200Screen->chip_flags & R200_CHIPSET_YCBCR_BROKEN)) {
 443      /* yuv textures don't work with some chips - R200 / rv280 okay so far
 444         others get the bit ordering right but don't actually do YUV-RGB conversion */
 445       _mesa_enable_extension( ctx, "GL_MESA_ycbcr_texture" );
 446    }
 447    if (rmesa->glCtx->Mesa_DXTn) {
 448       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 449       _mesa_enable_extension( ctx, "GL_S3_s3tc" );
 450    }
 451    else if (driQueryOptionb (&rmesa->optionCache, "force_s3tc_enable")) {
 452       _mesa_enable_extension( ctx, "GL_EXT_texture_compression_s3tc" );
 453    }
 454
 455    if (rmesa->r200Screen->drmSupportsCubeMapsR200)
 456       _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map" );
 457    if (rmesa->r200Screen->drmSupportsBlendColor) {
 458        driInitExtensions( ctx, blend_extensions, GL_FALSE );
 459    }
 460    if(rmesa->r200Screen->drmSupportsVertexProgram)
 461       driInitSingleExtension( ctx, ARB_vp_extension );
 462    if(driQueryOptionb(&rmesa->optionCache, "nv_vertex_program"))
 463       driInitSingleExtension( ctx, NV_vp_extension );
 464
 465    if ((ctx->Const.MaxTextureUnits == 6) && rmesa->r200Screen->drmSupportsFragShader)
 466       driInitSingleExtension( ctx, ATI_fs_extension );
 467    if (rmesa->r200Screen->drmSupportsPointSprites)
 468       driInitExtensions( ctx, point_extensions, GL_FALSE );
 469 #if 0
 470    r200InitDriverFuncs( ctx );
 471    r200InitIoctlFuncs( ctx );
 472    r200InitStateFuncs( ctx );
 473    r200InitTextureFuncs( ctx );
 474 #endif
 475    /* plug in a few more device driver functions */
 476    /* XXX these should really go right after _mesa_init_driver_functions() */
 477    r200InitPixelFuncs( ctx );
 478    r200InitSpanFuncs( ctx );
 479    r200InitTnlFuncs( ctx );
 480    r200InitState( rmesa );
 481    r200InitSwtcl( ctx );
 482
 483    fthrottle_mode = driQueryOptioni(&rmesa->optionCache, "fthrottle_mode");
 484    rmesa->iw.irq_seq = -1;
 485    rmesa->irqsEmitted = 0;
 486    rmesa->do_irqs = (fthrottle_mode == DRI_CONF_FTHROTTLE_IRQS &&
 487                      rmesa->r200Screen->irq);
 488
 489    rmesa->do_usleeps = (fthrottle_mode == DRI_CONF_FTHROTTLE_USLEEPS);
 490
 491    if (!rmesa->do_irqs)
 492       fprintf(stderr,
 493               "IRQ's not enabled, falling back to %s: %d %d\n",
 494               rmesa->do_usleeps ? "usleeps" : "busy waits",
 495               fthrottle_mode,
 496               rmesa->r200Screen->irq);
 497
 498    rmesa->prefer_gart_client_texturing =
 499       (getenv("R200_GART_CLIENT_TEXTURES") != 0);
 500
 501    (*sPriv->systemTime->getUST)( & rmesa->swap_ust );
 502
 503
 504 #if DO_DEBUG
 505    R200_DEBUG  = driParseDebugString( getenv( "R200_DEBUG" ),
 506                                       debug_control );
 507    R200_DEBUG |= driParseDebugString( getenv( "RADEON_DEBUG" ),
 508                                       debug_control );
 509 #endif
 510
 511    tcl_mode = driQueryOptioni(&rmesa->optionCache, "tcl_mode");
 512    if (driQueryOptionb(&rmesa->optionCache, "no_rast")) {
 513       fprintf(stderr, "disabling 3D acceleration\n");
 514       FALLBACK(rmesa, R200_FALLBACK_DISABLE, 1);
 515    }
 516    else if (tcl_mode == DRI_CONF_TCL_SW || getenv("R200_NO_TCL") ||
 517             !(rmesa->r200Screen->chip_flags & RADEON_CHIPSET_TCL)) {
 518       if (rmesa->r200Screen->chip_flags & RADEON_CHIPSET_TCL) {
 519          rmesa->r200Screen->chip_flags &= ~RADEON_CHIPSET_TCL;
 520          fprintf(stderr, "Disabling HW TCL support\n");
 521       }
 522       TCL_FALLBACK(rmesa->glCtx, R200_TCL_FALLBACK_TCL_DISABLE, 1);
 523    }
 524
 525    return GL_TRUE;
 526 }
 527
 528
 529 /* Destroy the device specific context.
 530  */
 531 /* Destroy the Mesa and driver specific context data.
 532  */
 533 void r200DestroyContext( __DRIcontextPrivate *driContextPriv )
 534 {
 535    GET_CURRENT_CONTEXT(ctx);
 536    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 537    r200ContextPtr current = ctx ? R200_CONTEXT(ctx) : NULL;
 538
 539    /* check if we're deleting the currently bound context */
 540    if (rmesa == current) {
 541       R200_FIREVERTICES( rmesa );
 542       _mesa_make_current(NULL, NULL, NULL);
 543    }
 544
 545    /* Free r200 context resources */
 546    assert(rmesa); /* should never be null */
 547    if ( rmesa ) {
 548       GLboolean   release_texture_heaps;
 549
 550
 551       release_texture_heaps = (rmesa->glCtx->Shared->RefCount == 1);
 552       _swsetup_DestroyContext( rmesa->glCtx );
 553       _tnl_DestroyContext( rmesa->glCtx );
 554       _vbo_DestroyContext( rmesa->glCtx );
 555       _swrast_DestroyContext( rmesa->glCtx );
 556
 557       r200DestroySwtcl( rmesa->glCtx );
 558       r200ReleaseArrays( rmesa->glCtx, ~0 );
 559
 560       if (rmesa->dma.current.buf) {
 561          r200ReleaseDmaRegion( rmesa, &rmesa->dma.current, __FUNCTION__ );
 562          r200FlushCmdBuf( rmesa, __FUNCTION__ );
 563       }
 564
 565       if (rmesa->state.scissor.pClipRects) {
 566          FREE(rmesa->state.scissor.pClipRects);
 567          rmesa->state.scissor.pClipRects = NULL;
 568       }
 569
 570       if ( release_texture_heaps ) {
 571          /* This share group is about to go away, free our private
 572           * texture object data.
 573           */
 574          int i;
 575
 576          for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 577             driDestroyTextureHeap( rmesa->texture_heaps[ i ] );
 578             rmesa->texture_heaps[ i ] = NULL;
 579          }
 580
 581          assert( is_empty_list( & rmesa->swapped ) );
 582       }
 583
 584       /* free the Mesa context */
 585       rmesa->glCtx->DriverCtx = NULL;
 586       _mesa_destroy_context( rmesa->glCtx );
 587
 588       /* free the option cache */
 589       driDestroyOptionCache (&rmesa->optionCache);
 590
 591       FREE( rmesa );
 592    }
 593 }
 594
 595
 596
 597
 598 void
 599 r200SwapBuffers( __DRIdrawablePrivate *dPriv )
 600 {
 601    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 602       r200ContextPtr rmesa;
 603       GLcontext *ctx;
 604       rmesa = (r200ContextPtr) dPriv->driContextPriv->driverPrivate;
 605       ctx = rmesa->glCtx;
 606       if (ctx->Visual.doubleBufferMode) {
 607          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 608          if ( rmesa->doPageFlip ) {
 609             r200PageFlip( dPriv );
 610          }
 611          else {
 612              r200CopyBuffer( dPriv, NULL );
 613          }
 614       }
 615    }
 616    else {
 617       /* XXX this shouldn't be an error but we can't handle it for now */
 618       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 619    }
 620 }
 621
 622 void
 623 r200CopySubBuffer( __DRIdrawablePrivate *dPriv,
 624                    int x, int y, int w, int h )
 625 {
 626    if (dPriv->driContextPriv && dPriv->driContextPriv->driverPrivate) {
 627       r200ContextPtr rmesa;
 628       GLcontext *ctx;
 629       rmesa = (r200ContextPtr) dPriv->driContextPriv->driverPrivate;
 630       ctx = rmesa->glCtx;
 631       if (ctx->Visual.doubleBufferMode) {
 632          drm_clip_rect_t rect;
 633          rect.x1 = x + dPriv->x;
 634          rect.y1 = (dPriv->h - y - h) + dPriv->y;
 635          rect.x2 = rect.x1 + w;
 636          rect.y2 = rect.y1 + h;
 637          _mesa_notifySwapBuffers( ctx );  /* flush pending rendering comands */
 638          r200CopyBuffer( dPriv, &rect );
 639       }
 640    }
 641    else {
 642       /* XXX this shouldn't be an error but we can't handle it for now */
 643       _mesa_problem(NULL, "%s: drawable has no context!", __FUNCTION__);
 644    }
 645 }
 646
 647 /* Force the context `c' to be the current context and associate with it
 648  * buffer `b'.
 649  */
 650 GLboolean
 651 r200MakeCurrent( __DRIcontextPrivate *driContextPriv,
 652                    __DRIdrawablePrivate *driDrawPriv,
 653                    __DRIdrawablePrivate *driReadPriv )
 654 {
 655    if ( driContextPriv ) {
 656       r200ContextPtr newCtx =
 657          (r200ContextPtr) driContextPriv->driverPrivate;
 658
 659       if (R200_DEBUG & DEBUG_DRI)
 660          fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)newCtx->glCtx);
 661
 662       newCtx->dri.readable = driReadPriv;
 663
 664       if ( newCtx->dri.drawable != driDrawPriv ||
 665            newCtx->lastStamp != driDrawPriv->lastStamp ) {
 666          if (driDrawPriv->swap_interval == (unsigned)-1) {
 667             driDrawPriv->vblFlags = (newCtx->r200Screen->irq != 0)
 668                ? driGetDefaultVBlankFlags(&newCtx->optionCache)
 669                : VBLANK_FLAG_NO_IRQ;
 670
 671             driDrawableInitVBlank( driDrawPriv );
 672          }
 673
 674          newCtx->dri.drawable = driDrawPriv;
 675
 676          r200SetCliprects(newCtx);
 677          r200UpdateViewportOffset( newCtx->glCtx );
 678       }
 679
 680       _mesa_make_current( newCtx->glCtx,
 681                           (GLframebuffer *) driDrawPriv->driverPrivate,
 682                           (GLframebuffer *) driReadPriv->driverPrivate );
 683
 684       _mesa_update_state( newCtx->glCtx );
 685       r200ValidateState( newCtx->glCtx );
 686
 687    } else {
 688       if (R200_DEBUG & DEBUG_DRI)
 689          fprintf(stderr, "%s ctx is null\n", __FUNCTION__);
 690       _mesa_make_current( NULL, NULL, NULL );
 691    }
 692
 693    if (R200_DEBUG & DEBUG_DRI)
 694       fprintf(stderr, "End %s\n", __FUNCTION__);
 695    return GL_TRUE;
 696 }
 697
 698 /* Force the context `c' to be unbound from its buffer.
 699  */
 700 GLboolean
 701 r200UnbindContext( __DRIcontextPrivate *driContextPriv )
 702 {
 703    r200ContextPtr rmesa = (r200ContextPtr) driContextPriv->driverPrivate;
 704
 705    if (R200_DEBUG & DEBUG_DRI)
 706       fprintf(stderr, "%s ctx %p\n", __FUNCTION__, (void *)rmesa->glCtx);
 707
 708    return GL_TRUE;
 709 }