src/mesa/drivers/dri/tdfx/tdfx_context.c

   1 /* -*- mode: c; c-basic-offset: 3 -*-
   2  *
   3  * Copyright 2000 VA Linux Systems Inc., Fremont, California.
   4  *
   5  * All Rights Reserved.
   6  *
   7  * Permission is hereby granted, free of charge, to any person obtaining a
   8  * copy of this software and associated documentation files (the "Software"),
   9  * to deal in the Software without restriction, including without limitation
  10  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  11  * and/or sell copies of the Software, and to permit persons to whom the
  12  * Software is furnished to do so, subject to the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the next
  15  * paragraph) shall be included in all copies or substantial portions of the
  16  * Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  21  * VA LINUX SYSTEMS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  22  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  23  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26 /* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_context.c,v 1.12 2003/05/08 09:25:35 herrb Exp $ */
  27
  28 /*
  29  * Original rewrite:
  30  *      Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
  31  *
  32  * Authors:
  33  *      Gareth Hughes <gareth@valinux.com>
  34  *      Brian Paul <brianp@valinux.com>
  35  *
  36  */
  37
  38 #include <dlfcn.h>
  39 #include "tdfx_context.h"
  40 #include "tdfx_dd.h"
  41 #include "tdfx_state.h"
  42 #include "tdfx_vb.h"
  43 #include "tdfx_tris.h"
  44 #include "tdfx_render.h"
  45 #include "tdfx_span.h"
  46 #include "tdfx_texman.h"
  47 #include "extensions.h"
  48
  49
  50 #include "swrast/swrast.h"
  51 #include "swrast_setup/swrast_setup.h"
  52 #include "array_cache/acache.h"
  53
  54 #include "tnl/tnl.h"
  55 #include "tnl/t_pipeline.h"
  56
  57
  58 /*
  59  * Enable/Disable the extensions for this context.
  60  */
  61 static void tdfxDDInitExtensions( GLcontext *ctx )
  62 {
  63    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
  64
  65    _mesa_enable_extension( ctx, "GL_HP_occlusion_test" );
  66    _mesa_enable_extension( ctx, "GL_EXT_paletted_texture" );
  67    _mesa_enable_extension( ctx, "GL_EXT_texture_lod_bias" );
  68
  69    if ( fxMesa->haveTwoTMUs ) {
  70       _mesa_enable_extension( ctx, "GL_EXT_texture_env_add" );
  71       _mesa_enable_extension( ctx, "GL_ARB_multitexture" );
  72    }
  73
  74    if ( TDFX_IS_NAPALM( fxMesa ) ) {
  75 #if 0
  76       _mesa_enable_extension( ctx, "GL_ARB_texture_compression" );
  77       _mesa_enable_extension( ctx, "GL_3DFX_texture_compression_FXT1" );
  78 #endif
  79       _mesa_enable_extension( ctx, "GL_EXT_texture_env_combine" );
  80    }
  81
  82 #if 0
  83    _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map");
  84    _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
  85 #endif
  86
  87    if (fxMesa->haveHwStencil) {
  88       _mesa_enable_extension( ctx, "GL_EXT_stencil_wrap" );
  89    }
  90 }
  91
  92
  93
  94 static const struct tnl_pipeline_stage *tdfx_pipeline[] = {
  95    &_tnl_vertex_transform_stage,
  96    &_tnl_normal_transform_stage,
  97    &_tnl_lighting_stage,        /* REMOVE: fog coord stage */
  98    &_tnl_texgen_stage,
  99    &_tnl_texture_transform_stage,
 100                                 /* REMOVE: point attenuation stage */
 101    &_tnl_render_stage,
 102    0,
 103 };
 104
 105
 106 GLboolean tdfxCreateContext( const __GLcontextModes *mesaVis,
 107                              __DRIcontextPrivate *driContextPriv,
 108                              void *sharedContextPrivate )
 109 {
 110    tdfxContextPtr fxMesa;
 111    GLcontext *ctx, *shareCtx;
 112    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 113    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 114    TDFXSAREAPriv *saPriv = (TDFXSAREAPriv *) ((char *) sPriv->pSAREA +
 115                                               sizeof(XF86DRISAREARec));
 116
 117    /* Allocate tdfx context */
 118    fxMesa = (tdfxContextPtr) CALLOC( sizeof(tdfxContextRec) );
 119    if (!fxMesa)
 120       return GL_FALSE;
 121
 122    /* Allocate the Mesa context */
 123    if (sharedContextPrivate)
 124       shareCtx = ((tdfxContextPtr) sharedContextPrivate)->glCtx;
 125    else
 126       shareCtx = NULL;
 127
 128    fxMesa->glCtx = _mesa_create_context(mesaVis, shareCtx, (void *) fxMesa, GL_TRUE);
 129    if (!fxMesa->glCtx) {
 130       FREE(fxMesa);
 131       return GL_FALSE;
 132    }
 133    driContextPriv->driverPrivate = fxMesa;
 134
 135    /* Mirror some important DRI state
 136     */
 137    fxMesa->hHWContext = driContextPriv->hHWContext;
 138    fxMesa->driHwLock = &sPriv->pSAREA->lock;
 139    fxMesa->driFd = sPriv->fd;
 140
 141    fxMesa->driScreen = sPriv;
 142    fxMesa->driContext = driContextPriv;
 143    fxMesa->fxScreen = fxScreen;
 144    fxMesa->sarea = saPriv;
 145
 146    fxMesa->haveHwStencil = ( TDFX_IS_NAPALM( fxMesa ) &&
 147                              mesaVis->stencilBits &&
 148                              mesaVis->depthBits == 24 );
 149
 150    fxMesa->screen_width = fxScreen->width;
 151    fxMesa->screen_height = fxScreen->height;
 152
 153    fxMesa->new_gl_state = ~0;
 154    fxMesa->new_state = ~0;
 155    fxMesa->dirty = ~0;
 156
 157    /* NOTE: This must be here before any Glide calls! */
 158    if (!tdfxInitGlide( fxMesa )) {
 159       FREE(fxMesa);
 160       return GL_FALSE;
 161    }
 162
 163    fxMesa->Glide.grDRIOpen( (char*) sPriv->pFB, fxScreen->regs.map, fxScreen->deviceID,
 164               fxScreen->width, fxScreen->height, fxScreen->mem, fxScreen->cpp,
 165               fxScreen->stride, fxScreen->fifoOffset, fxScreen->fifoSize,
 166               fxScreen->fbOffset, fxScreen->backOffset, fxScreen->depthOffset,
 167               fxScreen->textureOffset, fxScreen->textureSize, &saPriv->fifoPtr,
 168               &saPriv->fifoRead );
 169
 170    if ( getenv( "FX_GLIDE_SWAPINTERVAL" ) ) {
 171       fxMesa->Glide.SwapInterval = atoi( getenv( "FX_GLIDE_SWAPINTERVAL" ) );
 172    } else {
 173       fxMesa->Glide.SwapInterval = 0;
 174    }
 175    if ( getenv( "FX_MAX_PENDING_SWAPS" ) ) {
 176       fxMesa->Glide.MaxPendingSwaps = atoi( getenv( "FX_MAX_PENDING_SWAPS" ) );
 177    } else {
 178       fxMesa->Glide.MaxPendingSwaps = 2;
 179    }
 180
 181    fxMesa->Glide.Initialized = GL_FALSE;
 182    fxMesa->Glide.Board = 0;
 183
 184
 185    if (getenv("FX_EMULATE_SINGLE_TMU")) {
 186       fxMesa->haveTwoTMUs = GL_FALSE;
 187    }
 188    else {
 189       if ( TDFX_IS_BANSHEE( fxMesa ) ) {
 190          fxMesa->haveTwoTMUs = GL_FALSE;
 191       } else {
 192          fxMesa->haveTwoTMUs = GL_TRUE;
 193       }
 194    }
 195
 196    fxMesa->stats.swapBuffer = 0;
 197    fxMesa->stats.reqTexUpload = 0;
 198    fxMesa->stats.texUpload = 0;
 199    fxMesa->stats.memTexUpload = 0;
 200
 201    fxMesa->tmuSrc = TDFX_TMU_NONE;
 202
 203    ctx = fxMesa->glCtx;
 204    if ( TDFX_IS_NAPALM( fxMesa ) ) {
 205       ctx->Const.MaxTextureLevels = 12;
 206    } else {
 207       ctx->Const.MaxTextureLevels = 9;
 208    }
 209    ctx->Const.MaxTextureUnits = TDFX_IS_BANSHEE( fxMesa ) ? 1 : 2;
 210
 211    /* No wide points.
 212     */
 213    ctx->Const.MinPointSize = 1.0;
 214    ctx->Const.MinPointSizeAA = 1.0;
 215    ctx->Const.MaxPointSize = 1.0;
 216    ctx->Const.MaxPointSizeAA = 1.0;
 217
 218    /* Disable wide lines as we can't antialias them correctly in
 219     * hardware.
 220     */
 221    ctx->Const.MinLineWidth = 1.0;
 222    ctx->Const.MinLineWidthAA = 1.0;
 223    ctx->Const.MaxLineWidth = 1.0;
 224    ctx->Const.MaxLineWidthAA = 1.0;
 225    ctx->Const.LineWidthGranularity = 1.0;
 226
 227    /* Initialize the software rasterizer and helper modules.
 228     */
 229    _swrast_CreateContext( ctx );
 230    _ac_CreateContext( ctx );
 231    _tnl_CreateContext( ctx );
 232    _swsetup_CreateContext( ctx );
 233
 234    /* Install the customized pipeline:
 235     */
 236    _tnl_destroy_pipeline( ctx );
 237    _tnl_install_pipeline( ctx, tdfx_pipeline );
 238
 239    /* Configure swrast to match hardware characteristics:
 240     */
 241    _swrast_allow_pixel_fog( ctx, GL_TRUE );
 242    _swrast_allow_vertex_fog( ctx, GL_FALSE );
 243
 244    tdfxDDInitExtensions( ctx );
 245    tdfxDDInitDriverFuncs( ctx );
 246    tdfxDDInitStateFuncs( ctx );
 247    tdfxDDInitRenderFuncs( ctx );
 248    tdfxDDInitSpanFuncs( ctx );
 249    tdfxDDInitTriFuncs( ctx );
 250    tdfxInitVB( ctx );
 251    tdfxInitState( fxMesa );
 252
 253    return GL_TRUE;
 254 }
 255
 256
 257 static GLboolean tdfxInitVertexFormats( tdfxContextPtr fxMesa )
 258 {
 259    FxI32 result;
 260    int i;
 261
 262    LOCK_HARDWARE( fxMesa );
 263
 264    fxMesa->Glide.grGet( GR_GLIDE_VERTEXLAYOUT_SIZE, sizeof(FxI32), &result );
 265    for ( i = 0 ; i < TDFX_NUM_LAYOUTS ; i++ ) {
 266       fxMesa->layout[i] = MALLOC( result );
 267       if ( !fxMesa->layout[i] ) {
 268          UNLOCK_HARDWARE( fxMesa );
 269          return GL_FALSE;
 270       }
 271    }
 272
 273    /* Tiny vertex format - 16 bytes.
 274     */
 275    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 276    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 277    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 278    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 279    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 280    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_TINY] );
 281
 282    /* Non textured vertex format - 24 bytes (Need w for table fog)
 283     */
 284    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 285    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 286    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 287    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 288    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 289    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 290    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_NOTEX] );
 291
 292    /* Single textured vertex format - 32 bytes.
 293     */
 294    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 295    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 296    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 297    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 298    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 299    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 300    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 301    /*grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 302    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_SINGLE] );
 303
 304    /* Multitextured vertex format - 40 bytes.
 305     */
 306    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 307    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 308    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 309    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 310    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 311    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 312    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 313    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 314    /*fxMesa->Glide.grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 315    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_MULTI] );
 316
 317    /* Projected texture vertex format - 48 bytes.
 318     */
 319    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 320    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 321    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 322    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 323    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 324    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 325    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 326    fxMesa->Glide.grVertexLayout( GR_PARAM_Q0, TDFX_Q0_OFFSET, GR_PARAM_ENABLE );
 327    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 328    fxMesa->Glide.grVertexLayout( GR_PARAM_Q1, TDFX_Q1_OFFSET, GR_PARAM_ENABLE );
 329    /*fxMesa->Glide.grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 330    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_PROJECT] );
 331
 332    UNLOCK_HARDWARE( fxMesa );
 333
 334    return GL_TRUE;
 335 }
 336
 337
 338 /*
 339  * Initialize the state in an tdfxContextPtr struct.
 340  */
 341 static GLboolean
 342 tdfxInitContext( __DRIdrawablePrivate *driDrawPriv, tdfxContextPtr fxMesa )
 343 {
 344    /* KW: Would be nice to make one of these a member of the other.
 345     */
 346    FxI32 result[2];
 347
 348    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 349       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 350    }
 351
 352 #if DEBUG_LOCKING
 353    fprintf(stderr, "Debug locking enabled\n");
 354 #endif
 355
 356    if ( fxMesa->Glide.Initialized )
 357       return GL_TRUE;
 358
 359    fxMesa->width = driDrawPriv->w;
 360    fxMesa->height = driDrawPriv->h;
 361
 362    /* We have to use a light lock here, because we can't do any glide
 363     * operations yet. No use of FX_* functions in this function.
 364     */
 365    DRM_LIGHT_LOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 366
 367    fxMesa->Glide.grGlideInit();
 368    fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 369
 370    fxMesa->Glide.Context = fxMesa->Glide.grSstWinOpen( (FxU32) -1,
 371                                          GR_RESOLUTION_NONE,
 372                                          GR_REFRESH_NONE,
 373                                          fxMesa->Glide.ColorFormat,
 374                                          fxMesa->Glide.Origin,
 375                                          2, 1 );
 376
 377    fxMesa->Glide.grDRIResetSAREA();
 378
 379    DRM_UNLOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 380
 381    if ( !fxMesa->Glide.Context )
 382       return GL_FALSE;
 383
 384
 385    /* Perform the Glide-dependant part of the context initialization.
 386     */
 387    FX_grColorMaskv( fxMesa->glCtx, true4 );
 388
 389    tdfxTMInit( fxMesa );
 390
 391    LOCK_HARDWARE( fxMesa );
 392
 393    if ( fxMesa->glCtx->Visual.depthBits > 0 ) {
 394       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
 395    } else {
 396       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_DISABLE);
 397    }
 398
 399    fxMesa->Glide.grLfbWriteColorFormat( GR_COLORFORMAT_ABGR );
 400
 401    fxMesa->Glide.grGet( GR_TEXTURE_ALIGN, sizeof(FxI32), result );
 402    fxMesa->Glide.TextureAlign = result[0];
 403
 404    fxMesa->Glide.State = NULL;
 405    fxMesa->Glide.grGet( GR_GLIDE_STATE_SIZE, sizeof(FxI32), result );
 406    fxMesa->Glide.State = MALLOC( result[0] );
 407
 408    fxMesa->Fog.Table = NULL;
 409    fxMesa->Glide.grGet( GR_FOG_TABLE_ENTRIES, sizeof(FxI32), result );
 410    fxMesa->Fog.Table = MALLOC( result[0] * sizeof(GrFog_t) );
 411
 412    UNLOCK_HARDWARE( fxMesa );
 413
 414    if ( !fxMesa->Glide.State || !fxMesa->Fog.Table ) {
 415       if ( fxMesa->Glide.State )
 416          FREE( fxMesa->Glide.State );
 417       if ( fxMesa->Fog.Table )
 418          FREE( fxMesa->Fog.Table );
 419       return GL_FALSE;
 420    }
 421
 422    if ( !tdfxInitVertexFormats( fxMesa ) ) {
 423       return GL_FALSE;
 424    }
 425
 426    LOCK_HARDWARE( fxMesa );
 427
 428    fxMesa->Glide.grGlideGetState( fxMesa->Glide.State );
 429
 430    if ( getenv( "FX_GLIDE_INFO" ) ) {
 431       printf( "GR_RENDERER  = %s\n", (char *) fxMesa->Glide.grGetString( GR_RENDERER ) );
 432       printf( "GR_VERSION   = %s\n", (char *) fxMesa->Glide.grGetString( GR_VERSION ) );
 433       printf( "GR_VENDOR    = %s\n", (char *) fxMesa->Glide.grGetString( GR_VENDOR ) );
 434       printf( "GR_HARDWARE  = %s\n", (char *) fxMesa->Glide.grGetString( GR_HARDWARE ) );
 435       printf( "GR_EXTENSION = %s\n", (char *) fxMesa->Glide.grGetString( GR_EXTENSION ) );
 436    }
 437
 438    UNLOCK_HARDWARE( fxMesa );
 439
 440    {
 441       const char *debug = getenv("LIBGL_DEBUG");
 442       if (debug && strstr(debug, "fallbacks")) {
 443          fxMesa->debugFallbacks = GL_TRUE;
 444       }
 445    }
 446
 447
 448    fxMesa->numClipRects = 0;
 449    fxMesa->pClipRects = NULL;
 450    fxMesa->scissoredClipRects = GL_FALSE;
 451
 452    fxMesa->Glide.Initialized = GL_TRUE;
 453
 454    return GL_TRUE;
 455 }
 456
 457
 458 void
 459 tdfxDestroyContext( __DRIcontextPrivate *driContextPriv )
 460 {
 461    tdfxContextPtr fxMesa = (tdfxContextPtr) driContextPriv->driverPrivate;
 462
 463    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 464       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 465    }
 466
 467    if ( fxMesa ) {
 468       if (fxMesa->glCtx->Shared->RefCount == 1 && fxMesa->driDrawable) {
 469          /* This share group is about to go away, free our private
 470           * texture object data.
 471           */
 472          struct gl_texture_object *tObj;
 473          tObj = fxMesa->glCtx->Shared->TexObjectList;
 474          while (tObj) {
 475             tdfxTMFreeTexture(fxMesa, tObj);
 476             tObj = tObj->Next;
 477          }
 478       }
 479
 480       tdfxTMClose(fxMesa);  /* free texture memory */
 481
 482       _swsetup_DestroyContext( fxMesa->glCtx );
 483       _tnl_DestroyContext( fxMesa->glCtx );
 484       _ac_DestroyContext( fxMesa->glCtx );
 485       _swrast_DestroyContext( fxMesa->glCtx );
 486
 487       tdfxFreeVB( fxMesa->glCtx );
 488
 489       /* Free Mesa context */
 490       fxMesa->glCtx->DriverCtx = NULL;
 491       _mesa_destroy_context(fxMesa->glCtx);
 492
 493       /* free the tdfx context */
 494       XFree( fxMesa );
 495    }
 496 }
 497
 498
 499 GLboolean
 500 tdfxUnbindContext( __DRIcontextPrivate *driContextPriv )
 501 {
 502    GET_CURRENT_CONTEXT(ctx);
 503    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 504
 505    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 506       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 507    }
 508
 509    if ( driContextPriv && (tdfxContextPtr) driContextPriv == fxMesa ) {
 510       LOCK_HARDWARE(fxMesa);
 511       fxMesa->Glide.grGlideGetState(fxMesa->Glide.State);
 512       UNLOCK_HARDWARE(fxMesa);
 513    }
 514    return GL_TRUE;
 515 }
 516
 517
 518 GLboolean
 519 tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
 520                  __DRIdrawablePrivate *driDrawPriv,
 521                  __DRIdrawablePrivate *driReadPriv )
 522 {
 523    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 524       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 525    }
 526
 527    if ( driContextPriv ) {
 528       tdfxContextPtr newFx = (tdfxContextPtr) driContextPriv->driverPrivate;
 529       GLcontext *newCtx = newFx->glCtx;
 530       GET_CURRENT_CONTEXT(curCtx);
 531
 532       if ( newFx->driDrawable != driDrawPriv ) {
 533          newFx->driDrawable = driDrawPriv;
 534          newFx->dirty = ~0;
 535       }
 536       else if (curCtx == newCtx) {
 537          /* same drawable, same context -> no-op */
 538          /* Need to call _mesa_make_current2() in order to make sure API
 539           * dispatch is set correctly.
 540           */
 541          _mesa_make_current2( newCtx,
 542                               (GLframebuffer *) driDrawPriv->driverPrivate,
 543                               (GLframebuffer *) driReadPriv->driverPrivate );
 544          return GL_TRUE;
 545       }
 546
 547       if ( !newFx->Glide.Initialized ) {
 548          if ( !tdfxInitContext( driDrawPriv, newFx ) )
 549             return GL_FALSE;
 550
 551          LOCK_HARDWARE( newFx );
 552
 553          /* FIXME: Force loading of window information */
 554          newFx->width = 0;
 555          tdfxUpdateClipping(newCtx);
 556          tdfxUploadClipping(newFx);
 557
 558          UNLOCK_HARDWARE( newFx );
 559       } else {
 560          LOCK_HARDWARE( newFx );
 561
 562          newFx->Glide.grSstSelect( newFx->Glide.Board );
 563          newFx->Glide.grGlideSetState( newFx->Glide.State );
 564
 565          tdfxUpdateClipping(newCtx);
 566          tdfxUploadClipping(newFx);
 567
 568          UNLOCK_HARDWARE( newFx );
 569       }
 570
 571       _mesa_make_current2( newCtx,
 572                            (GLframebuffer *) driDrawPriv->driverPrivate,
 573                            (GLframebuffer *) driReadPriv->driverPrivate );
 574
 575       if ( !newCtx->Viewport.Width ) {
 576          _mesa_set_viewport( newCtx, 0, 0, driDrawPriv->w, driDrawPriv->h );
 577       }
 578    } else {
 579       _mesa_make_current( 0, 0 );
 580    }
 581
 582    return GL_TRUE;
 583 }
 584
 585
 586 /*
 587  * Enable this to trace calls to various Glide functions.
 588  */
 589 /*#define DEBUG_TRAP*/
 590 #ifdef DEBUG_TRAP
 591 static void (*real_grDrawTriangle)( const void *a, const void *b, const void *c );
 592 static void (*real_grDrawPoint)( const void *a );
 593 static void (*real_grDrawVertexArray)(FxU32 mode, FxU32 Count, void *pointers);
 594 static void (*real_grDrawVertexArrayContiguous)(FxU32 mode, FxU32 Count,
 595                                        void *pointers, FxU32 stride);
 596 static void (*real_grClipWindow)( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy );
 597
 598 static void (*real_grVertexLayout)(FxU32 param, FxI32 offset, FxU32 mode);
 599 static void (*real_grGlideGetVertexLayout)( void *layout );
 600 static void (*real_grGlideSetVertexLayout)( const void *layout );
 601
 602 static void (*real_grTexDownloadMipMapLevel)( GrChipID_t        tmu,
 603                                      FxU32             startAddress,
 604                                      GrLOD_t           thisLod,
 605                                      GrLOD_t           largeLod,
 606                                      GrAspectRatio_t   aspectRatio,
 607                                      GrTextureFormat_t format,
 608                                      FxU32             evenOdd,
 609                                               void              *data );
 610
 611
 612 static void debug_grDrawTriangle( const void *a, const void *b, const void *c )
 613 {
 614    printf("%s\n", __FUNCTION__);
 615    (*real_grDrawTriangle)(a, b, c);
 616 }
 617
 618 static void debug_grDrawPoint( const void *a )
 619 {
 620    const float *f = (const float *) a;
 621    printf("%s %g %g\n", __FUNCTION__, f[0], f[1]);
 622    (*real_grDrawPoint)(a);
 623 }
 624
 625 static void debug_grDrawVertexArray(FxU32 mode, FxU32 Count, void *pointers)
 626 {
 627    printf("%s count=%d\n", __FUNCTION__, (int) Count);
 628    (*real_grDrawVertexArray)(mode, Count, pointers);
 629 }
 630
 631 static void debug_grDrawVertexArrayContiguous(FxU32 mode, FxU32 Count,
 632                                        void *pointers, FxU32 stride)
 633 {
 634    printf("%s mode=0x%x count=%d\n", __FUNCTION__, (int) mode, (int) Count);
 635    (*real_grDrawVertexArrayContiguous)(mode, Count, pointers, stride);
 636 }
 637
 638 static void debug_grClipWindow( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy )
 639 {
 640    printf("%s %d,%d .. %d,%d\n", __FUNCTION__,
 641           (int) minx, (int) miny, (int) maxx, (int) maxy);
 642    (*real_grClipWindow)(minx, miny, maxx, maxy);
 643 }
 644
 645 static void debug_grVertexLayout(FxU32 param, FxI32 offset, FxU32 mode)
 646 {
 647    (*real_grVertexLayout)(param, offset, mode);
 648 }
 649
 650 static void debug_grGlideGetVertexLayout( void *layout )
 651 {
 652    (*real_grGlideGetVertexLayout)(layout);
 653 }
 654
 655 static void debug_grGlideSetVertexLayout( const void *layout )
 656 {
 657    (*real_grGlideSetVertexLayout)(layout);
 658 }
 659
 660 static void debug_grTexDownloadMipMapLevel( GrChipID_t        tmu,
 661                                      FxU32             startAddress,
 662                                      GrLOD_t           thisLod,
 663                                      GrLOD_t           largeLod,
 664                                      GrAspectRatio_t   aspectRatio,
 665                                      GrTextureFormat_t format,
 666                                      FxU32             evenOdd,
 667                                      void              *data )
 668 {
 669    (*real_grTexDownloadMipMapLevel)(tmu, startAddress, thisLod, largeLod,
 670                                     aspectRatio, format, evenOdd, data);
 671 }
 672
 673 #endif
 674
 675
 676 /*
 677  * Examine the context's deviceID to determine what kind of 3dfx hardware
 678  * is installed.  dlopen() the appropriate Glide library and initialize
 679  * this context's Glide function pointers.
 680  * Return:  true/false = success/failure
 681  */
 682 GLboolean tdfxInitGlide(tdfxContextPtr tmesa)
 683 {
 684    static const char *defaultGlide = "libglide3.so";
 685    const char *libName;
 686    void *libHandle;
 687
 688    /*
 689     * XXX this code which selects a Glide library filename given the
 690     * deviceID may need to be cleaned up a bit.
 691     * Non-Linux systems may have different filenames, for example.
 692     */
 693    switch (tmesa->fxScreen->deviceID) {
 694    case PCI_CHIP_BANSHEE:
 695    case PCI_CHIP_VOODOO3:
 696       libName = "libglide3-v3.so";
 697       break;
 698    case PCI_CHIP_VOODOO5:   /* same as PCI_CHIP_VOODOO4 */
 699       libName = "libglide3-v5.so";
 700       break;
 701    default:
 702       {
 703          __driUtilMessage("unrecognized 3dfx deviceID: 0x%x",
 704                  tmesa->fxScreen->deviceID);
 705       }
 706       return GL_FALSE;
 707    }
 708
 709    libHandle = dlopen(libName, RTLD_NOW);
 710    if (!libHandle) {
 711       /* The device-specific Glide library filename didn't work, try the
 712        * old, generic libglide3.so library.
 713        */
 714       libHandle = dlopen(defaultGlide, RTLD_NOW);
 715       if (!libHandle) {
 716          __driUtilMessage(
 717             "can't find Glide library, dlopen(%s) and dlopen(%s) both failed.",
 718             libName, defaultGlide);
 719          __driUtilMessage("dlerror() message: %s", dlerror());
 720          return GL_FALSE;
 721       }
 722       libName = defaultGlide;
 723    }
 724
 725    {
 726       const char *env = getenv("LIBGL_DEBUG");
 727       if (env && strstr(env, "verbose")) {
 728          fprintf(stderr, "libGL: using Glide library %s\n", libName);
 729       }
 730    }
 731
 732 #define GET_FUNCTION(PTR, NAME)                                         \
 733    tmesa->Glide.PTR = dlsym(libHandle, NAME);                           \
 734    if (!tmesa->Glide.PTR) {                                             \
 735       __driUtilMessage("couldn't find Glide function %s in %s.",        \
 736               NAME, libName);                                           \
 737    }
 738
 739    GET_FUNCTION(grDrawPoint, "grDrawPoint");
 740    GET_FUNCTION(grDrawLine, "grDrawLine");
 741    GET_FUNCTION(grDrawTriangle, "grDrawTriangle");
 742    GET_FUNCTION(grVertexLayout, "grVertexLayout");
 743    GET_FUNCTION(grDrawVertexArray, "grDrawVertexArray");
 744    GET_FUNCTION(grDrawVertexArrayContiguous, "grDrawVertexArrayContiguous");
 745    GET_FUNCTION(grBufferClear, "grBufferClear");
 746    /*GET_FUNCTION(grBufferSwap, "grBufferSwap");*/
 747    GET_FUNCTION(grRenderBuffer, "grRenderBuffer");
 748    GET_FUNCTION(grErrorSetCallback, "grErrorSetCallback");
 749    GET_FUNCTION(grFinish, "grFinish");
 750    GET_FUNCTION(grFlush, "grFlush");
 751    GET_FUNCTION(grSstWinOpen, "grSstWinOpen");
 752    GET_FUNCTION(grSstWinClose, "grSstWinClose");
 753 #if 0
 754    /* Not in V3 lib, and not used anyway. */
 755    GET_FUNCTION(grSetNumPendingBuffers, "grSetNumPendingBuffers");
 756 #endif
 757    GET_FUNCTION(grSelectContext, "grSelectContext");
 758    GET_FUNCTION(grSstOrigin, "grSstOrigin");
 759    GET_FUNCTION(grSstSelect, "grSstSelect");
 760    GET_FUNCTION(grAlphaBlendFunction, "grAlphaBlendFunction");
 761    GET_FUNCTION(grAlphaCombine, "grAlphaCombine");
 762    GET_FUNCTION(grAlphaControlsITRGBLighting, "grAlphaControlsITRGBLighting");
 763    GET_FUNCTION(grAlphaTestFunction, "grAlphaTestFunction");
 764    GET_FUNCTION(grAlphaTestReferenceValue, "grAlphaTestReferenceValue");
 765    GET_FUNCTION(grChromakeyMode, "grChromakeyMode");
 766    GET_FUNCTION(grChromakeyValue, "grChromakeyValue");
 767    GET_FUNCTION(grClipWindow, "grClipWindow");
 768    GET_FUNCTION(grColorCombine, "grColorCombine");
 769    GET_FUNCTION(grColorMask, "grColorMask");
 770    GET_FUNCTION(grCullMode, "grCullMode");
 771    GET_FUNCTION(grConstantColorValue, "grConstantColorValue");
 772    GET_FUNCTION(grDepthBiasLevel, "grDepthBiasLevel");
 773    GET_FUNCTION(grDepthBufferFunction, "grDepthBufferFunction");
 774    GET_FUNCTION(grDepthBufferMode, "grDepthBufferMode");
 775    GET_FUNCTION(grDepthMask, "grDepthMask");
 776    GET_FUNCTION(grDisableAllEffects, "grDisableAllEffects");
 777    GET_FUNCTION(grDitherMode, "grDitherMode");
 778    GET_FUNCTION(grFogColorValue, "grFogColorValue");
 779    GET_FUNCTION(grFogMode, "grFogMode");
 780    GET_FUNCTION(grFogTable, "grFogTable");
 781    GET_FUNCTION(grLoadGammaTable, "grLoadGammaTable");
 782    GET_FUNCTION(grSplash, "grSplash");
 783    GET_FUNCTION(grGet, "grGet");
 784    GET_FUNCTION(grGetString, "grGetString");
 785    GET_FUNCTION(grQueryResolutions, "grQueryResolutions");
 786    GET_FUNCTION(grReset, "grReset");
 787    GET_FUNCTION(grGetProcAddress, "grGetProcAddress");
 788    GET_FUNCTION(grEnable, "grEnable");
 789    GET_FUNCTION(grDisable, "grDisable");
 790    GET_FUNCTION(grCoordinateSpace, "grCoordinateSpace");
 791    GET_FUNCTION(grDepthRange, "grDepthRange");
 792    GET_FUNCTION(grStippleMode, "grStippleMode");
 793    GET_FUNCTION(grStipplePattern, "grStipplePattern");
 794    GET_FUNCTION(grViewport, "grViewport");
 795    GET_FUNCTION(grTexCalcMemRequired, "grTexCalcMemRequired");
 796    GET_FUNCTION(grTexTextureMemRequired, "grTexTextureMemRequired");
 797    GET_FUNCTION(grTexMinAddress, "grTexMinAddress");
 798    GET_FUNCTION(grTexMaxAddress, "grTexMaxAddress");
 799    GET_FUNCTION(grTexNCCTable, "grTexNCCTable");
 800    GET_FUNCTION(grTexSource, "grTexSource");
 801    GET_FUNCTION(grTexClampMode, "grTexClampMode");
 802    GET_FUNCTION(grTexCombine, "grTexCombine");
 803    GET_FUNCTION(grTexDetailControl, "grTexDetailControl");
 804    GET_FUNCTION(grTexFilterMode, "grTexFilterMode");
 805    GET_FUNCTION(grTexLodBiasValue, "grTexLodBiasValue");
 806    GET_FUNCTION(grTexDownloadMipMap, "grTexDownloadMipMap");
 807    GET_FUNCTION(grTexDownloadMipMapLevel, "grTexDownloadMipMapLevel");
 808    GET_FUNCTION(grTexDownloadMipMapLevelPartial, "grTexDownloadMipMapLevelPartial");
 809    GET_FUNCTION(grTexDownloadTable, "grTexDownloadTable");
 810    GET_FUNCTION(grTexDownloadTablePartial, "grTexDownloadTablePartial");
 811    GET_FUNCTION(grTexMipMapMode, "grTexMipMapMode");
 812    GET_FUNCTION(grTexMultibase, "grTexMultibase");
 813    GET_FUNCTION(grTexMultibaseAddress, "grTexMultibaseAddress");
 814    GET_FUNCTION(grLfbLock, "grLfbLock");
 815    GET_FUNCTION(grLfbUnlock, "grLfbUnlock");
 816    GET_FUNCTION(grLfbConstantAlpha, "grLfbConstantAlpha");
 817    GET_FUNCTION(grLfbConstantDepth, "grLfbConstantDepth");
 818    GET_FUNCTION(grLfbWriteColorSwizzle, "grLfbWriteColorSwizzle");
 819    GET_FUNCTION(grLfbWriteColorFormat, "grLfbWriteColorFormat");
 820    GET_FUNCTION(grLfbWriteRegion, "grLfbWriteRegion");
 821    GET_FUNCTION(grLfbReadRegion, "grLfbReadRegion");
 822    GET_FUNCTION(grGlideInit, "grGlideInit");
 823    GET_FUNCTION(grGlideShutdown, "grGlideShutdown");
 824    GET_FUNCTION(grGlideGetState, "grGlideGetState");
 825    GET_FUNCTION(grGlideSetState, "grGlideSetState");
 826    GET_FUNCTION(grGlideGetVertexLayout, "grGlideGetVertexLayout");
 827    GET_FUNCTION(grGlideSetVertexLayout, "grGlideSetVertexLayout");
 828
 829    /* Glide utility functions */
 830    GET_FUNCTION(guFogGenerateExp, "guFogGenerateExp");
 831    GET_FUNCTION(guFogGenerateExp2, "guFogGenerateExp2");
 832    GET_FUNCTION(guFogGenerateLinear, "guFogGenerateLinear");
 833
 834    /* DRI functions */
 835    GET_FUNCTION(grDRIOpen, "grDRIOpen");
 836    GET_FUNCTION(grDRIPosition, "grDRIPosition");
 837    /*GET_FUNCTION(grDRILostContext, "grDRILostContext");*/
 838    GET_FUNCTION(grDRIImportFifo, "grDRIImportFifo");
 839    GET_FUNCTION(grDRIInvalidateAll, "grDRIInvalidateAll");
 840    GET_FUNCTION(grDRIResetSAREA, "grDRIResetSAREA");
 841    GET_FUNCTION(grDRIBufferSwap, "grDRIBufferSwap");
 842
 843    /*
 844     * Extension functions:
 845     * Just use dlysm() because we want a NULL pointer if the function is
 846     * not found.
 847     */
 848    /* PIXEXT extension */
 849    tmesa->Glide.grStencilFunc = dlsym(libHandle, "grStencilFunc");
 850    tmesa->Glide.grStencilMask = dlsym(libHandle, "grStencilMask");
 851    tmesa->Glide.grStencilOp = dlsym(libHandle, "grStencilOp");
 852    tmesa->Glide.grBufferClearExt = dlsym(libHandle, "grBufferClearExt");
 853    tmesa->Glide.grColorMaskExt = dlsym(libHandle, "grColorMaskExt");
 854    /* COMBINE extension */
 855    tmesa->Glide.grColorCombineExt = dlsym(libHandle, "grColorCombineExt");
 856    tmesa->Glide.grTexColorCombineExt = dlsym(libHandle, "grTexColorCombineExt");
 857    tmesa->Glide.grAlphaCombineExt = dlsym(libHandle, "grAlphaCombineExt");
 858    tmesa->Glide.grTexAlphaCombineExt = dlsym(libHandle, "grTexAlphaCombineExt");
 859    tmesa->Glide.grAlphaBlendFunctionExt = dlsym(libHandle, "grAlphaBlendFunctionExt");
 860    tmesa->Glide.grConstantColorValueExt = dlsym(libHandle, "grConstantColorValueExt");
 861    /* Texus 2 */
 862    tmesa->Glide.txImgQuantize = dlsym(libHandle, "txImgQuantize");
 863    tmesa->Glide.txImgDequantizeFXT1 = dlsym(libHandle, "_txImgDequantizeFXT1");
 864    tmesa->Glide.txErrorSetCallback = dlsym(libHandle, "txErrorSetCallback");
 865
 866 #ifdef DEBUG_TRAP
 867    /* wrap the drawing functions so we can trap them */
 868    real_grDrawTriangle = tmesa->Glide.grDrawTriangle;
 869    tmesa->Glide.grDrawTriangle = debug_grDrawTriangle;
 870
 871    real_grDrawPoint = tmesa->Glide.grDrawPoint;
 872    tmesa->Glide.grDrawPoint = debug_grDrawPoint;
 873
 874    real_grDrawVertexArray = tmesa->Glide.grDrawVertexArray;
 875    tmesa->Glide.grDrawVertexArray = debug_grDrawVertexArray;
 876
 877    real_grDrawVertexArrayContiguous = tmesa->Glide.grDrawVertexArrayContiguous;
 878    tmesa->Glide.grDrawVertexArrayContiguous = debug_grDrawVertexArrayContiguous;
 879
 880    real_grClipWindow = tmesa->Glide.grClipWindow;
 881    tmesa->Glide.grClipWindow = debug_grClipWindow;
 882
 883    real_grVertexLayout = tmesa->Glide.grVertexLayout;
 884    tmesa->Glide.grVertexLayout = debug_grVertexLayout;
 885
 886    real_grGlideGetVertexLayout = tmesa->Glide.grGlideGetVertexLayout;
 887    tmesa->Glide.grGlideGetVertexLayout = debug_grGlideGetVertexLayout;
 888
 889    real_grGlideSetVertexLayout = tmesa->Glide.grGlideSetVertexLayout;
 890    tmesa->Glide.grGlideSetVertexLayout = debug_grGlideSetVertexLayout;
 891
 892    real_grTexDownloadMipMapLevel = tmesa->Glide.grTexDownloadMipMapLevel;
 893    tmesa->Glide.grTexDownloadMipMapLevel = debug_grTexDownloadMipMapLevel;
 894
 895 #endif
 896    return GL_TRUE;
 897 }