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 const char __driConfigOptions[] = { 0 };
  58 const GLuint __driNConfigOptions = 0;
  59
  60 /*
  61  * Enable/Disable the extensions for this context.
  62  */
  63 static void tdfxDDInitExtensions( GLcontext *ctx )
  64 {
  65    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
  66
  67    _mesa_enable_extension( ctx, "GL_HP_occlusion_test" );
  68    _mesa_enable_extension( ctx, "GL_EXT_paletted_texture" );
  69    _mesa_enable_extension( ctx, "GL_EXT_texture_lod_bias" );
  70
  71    if ( fxMesa->haveTwoTMUs ) {
  72       _mesa_enable_extension( ctx, "GL_EXT_texture_env_add" );
  73       _mesa_enable_extension( ctx, "GL_ARB_multitexture" );
  74    }
  75
  76    if ( TDFX_IS_NAPALM( fxMesa ) ) {
  77 #if 0
  78       _mesa_enable_extension( ctx, "GL_ARB_texture_compression" );
  79       _mesa_enable_extension( ctx, "GL_3DFX_texture_compression_FXT1" );
  80 #endif
  81       _mesa_enable_extension( ctx, "GL_EXT_texture_env_combine" );
  82    }
  83
  84 #if 0
  85    _mesa_enable_extension( ctx, "GL_ARB_texture_cube_map");
  86    _mesa_enable_extension( ctx, "GL_NV_texture_rectangle");
  87 #endif
  88
  89    if (fxMesa->haveHwStencil) {
  90       _mesa_enable_extension( ctx, "GL_EXT_stencil_wrap" );
  91    }
  92 }
  93
  94
  95
  96 static const struct tnl_pipeline_stage *tdfx_pipeline[] = {
  97    &_tnl_vertex_transform_stage,
  98    &_tnl_normal_transform_stage,
  99    &_tnl_lighting_stage,        /* REMOVE: fog coord stage */
 100    &_tnl_texgen_stage,
 101    &_tnl_texture_transform_stage,
 102                                 /* REMOVE: point attenuation stage */
 103    &_tnl_render_stage,
 104    0,
 105 };
 106
 107
 108 GLboolean tdfxCreateContext( const __GLcontextModes *mesaVis,
 109                              __DRIcontextPrivate *driContextPriv,
 110                              void *sharedContextPrivate )
 111 {
 112    tdfxContextPtr fxMesa;
 113    GLcontext *ctx, *shareCtx;
 114    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 115    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 116    TDFXSAREAPriv *saPriv = (TDFXSAREAPriv *) ((char *) sPriv->pSAREA +
 117                                               sizeof(XF86DRISAREARec));
 118
 119    /* Allocate tdfx context */
 120    fxMesa = (tdfxContextPtr) CALLOC( sizeof(tdfxContextRec) );
 121    if (!fxMesa)
 122       return GL_FALSE;
 123
 124    /* Allocate the Mesa context */
 125    if (sharedContextPrivate)
 126       shareCtx = ((tdfxContextPtr) sharedContextPrivate)->glCtx;
 127    else
 128       shareCtx = NULL;
 129
 130    fxMesa->glCtx = _mesa_create_context(mesaVis, shareCtx, (void *) fxMesa, GL_TRUE);
 131    if (!fxMesa->glCtx) {
 132       FREE(fxMesa);
 133       return GL_FALSE;
 134    }
 135    driContextPriv->driverPrivate = fxMesa;
 136
 137    /* Mirror some important DRI state
 138     */
 139    fxMesa->hHWContext = driContextPriv->hHWContext;
 140    fxMesa->driHwLock = &sPriv->pSAREA->lock;
 141    fxMesa->driFd = sPriv->fd;
 142
 143    fxMesa->driScreen = sPriv;
 144    fxMesa->driContext = driContextPriv;
 145    fxMesa->fxScreen = fxScreen;
 146    fxMesa->sarea = saPriv;
 147
 148    fxMesa->haveHwStencil = ( TDFX_IS_NAPALM( fxMesa ) &&
 149                              mesaVis->stencilBits &&
 150                              mesaVis->depthBits == 24 );
 151
 152    fxMesa->screen_width = fxScreen->width;
 153    fxMesa->screen_height = fxScreen->height;
 154
 155    fxMesa->new_gl_state = ~0;
 156    fxMesa->new_state = ~0;
 157    fxMesa->dirty = ~0;
 158
 159    /* NOTE: This must be here before any Glide calls! */
 160    if (!tdfxInitGlide( fxMesa )) {
 161       FREE(fxMesa);
 162       return GL_FALSE;
 163    }
 164
 165    fxMesa->Glide.grDRIOpen( (char*) sPriv->pFB, fxScreen->regs.map, fxScreen->deviceID,
 166               fxScreen->width, fxScreen->height, fxScreen->mem, fxScreen->cpp,
 167               fxScreen->stride, fxScreen->fifoOffset, fxScreen->fifoSize,
 168               fxScreen->fbOffset, fxScreen->backOffset, fxScreen->depthOffset,
 169               fxScreen->textureOffset, fxScreen->textureSize, &saPriv->fifoPtr,
 170               &saPriv->fifoRead );
 171
 172    if ( getenv( "FX_GLIDE_SWAPINTERVAL" ) ) {
 173       fxMesa->Glide.SwapInterval = atoi( getenv( "FX_GLIDE_SWAPINTERVAL" ) );
 174    } else {
 175       fxMesa->Glide.SwapInterval = 0;
 176    }
 177    if ( getenv( "FX_MAX_PENDING_SWAPS" ) ) {
 178       fxMesa->Glide.MaxPendingSwaps = atoi( getenv( "FX_MAX_PENDING_SWAPS" ) );
 179    } else {
 180       fxMesa->Glide.MaxPendingSwaps = 2;
 181    }
 182
 183    fxMesa->Glide.Initialized = GL_FALSE;
 184    fxMesa->Glide.Board = 0;
 185
 186
 187    if (getenv("FX_EMULATE_SINGLE_TMU")) {
 188       fxMesa->haveTwoTMUs = GL_FALSE;
 189    }
 190    else {
 191       if ( TDFX_IS_BANSHEE( fxMesa ) ) {
 192          fxMesa->haveTwoTMUs = GL_FALSE;
 193       } else {
 194          fxMesa->haveTwoTMUs = GL_TRUE;
 195       }
 196    }
 197
 198    fxMesa->stats.swapBuffer = 0;
 199    fxMesa->stats.reqTexUpload = 0;
 200    fxMesa->stats.texUpload = 0;
 201    fxMesa->stats.memTexUpload = 0;
 202
 203    fxMesa->tmuSrc = TDFX_TMU_NONE;
 204
 205    ctx = fxMesa->glCtx;
 206    if ( TDFX_IS_NAPALM( fxMesa ) ) {
 207       ctx->Const.MaxTextureLevels = 12;
 208    } else {
 209       ctx->Const.MaxTextureLevels = 9;
 210    }
 211    ctx->Const.MaxTextureUnits = TDFX_IS_BANSHEE( fxMesa ) ? 1 : 2;
 212    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 213    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 214
 215    /* No wide points.
 216     */
 217    ctx->Const.MinPointSize = 1.0;
 218    ctx->Const.MinPointSizeAA = 1.0;
 219    ctx->Const.MaxPointSize = 1.0;
 220    ctx->Const.MaxPointSizeAA = 1.0;
 221
 222    /* Disable wide lines as we can't antialias them correctly in
 223     * hardware.
 224     */
 225    ctx->Const.MinLineWidth = 1.0;
 226    ctx->Const.MinLineWidthAA = 1.0;
 227    ctx->Const.MaxLineWidth = 1.0;
 228    ctx->Const.MaxLineWidthAA = 1.0;
 229    ctx->Const.LineWidthGranularity = 1.0;
 230
 231    /* Initialize the software rasterizer and helper modules.
 232     */
 233    _swrast_CreateContext( ctx );
 234    _ac_CreateContext( ctx );
 235    _tnl_CreateContext( ctx );
 236    _swsetup_CreateContext( ctx );
 237
 238    /* Install the customized pipeline:
 239     */
 240    _tnl_destroy_pipeline( ctx );
 241    _tnl_install_pipeline( ctx, tdfx_pipeline );
 242
 243    /* Configure swrast to match hardware characteristics:
 244     */
 245    _swrast_allow_pixel_fog( ctx, GL_TRUE );
 246    _swrast_allow_vertex_fog( ctx, GL_FALSE );
 247
 248    tdfxDDInitExtensions( ctx );
 249    tdfxDDInitDriverFuncs( ctx );
 250    tdfxDDInitStateFuncs( ctx );
 251    tdfxDDInitRenderFuncs( ctx );
 252    tdfxDDInitSpanFuncs( ctx );
 253    tdfxDDInitTriFuncs( ctx );
 254    tdfxInitVB( ctx );
 255    tdfxInitState( fxMesa );
 256
 257    return GL_TRUE;
 258 }
 259
 260
 261 static GLboolean tdfxInitVertexFormats( tdfxContextPtr fxMesa )
 262 {
 263    FxI32 result;
 264    int i;
 265
 266    LOCK_HARDWARE( fxMesa );
 267
 268    fxMesa->Glide.grGet( GR_GLIDE_VERTEXLAYOUT_SIZE, sizeof(FxI32), &result );
 269    for ( i = 0 ; i < TDFX_NUM_LAYOUTS ; i++ ) {
 270       fxMesa->layout[i] = MALLOC( result );
 271       if ( !fxMesa->layout[i] ) {
 272          UNLOCK_HARDWARE( fxMesa );
 273          return GL_FALSE;
 274       }
 275    }
 276
 277    /* Tiny vertex format - 16 bytes.
 278     */
 279    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 280    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 281    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 282    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 283    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 284    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_TINY] );
 285
 286    /* Non textured vertex format - 24 bytes (Need w for table fog)
 287     */
 288    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 289    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 290    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 291    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 292    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 293    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 294    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_NOTEX] );
 295
 296    /* Single textured vertex format - 32 bytes.
 297     */
 298    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 299    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 300    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 301    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 302    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 303    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 304    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 305    /*grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 306    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_SINGLE] );
 307
 308    /* Multitextured vertex format - 40 bytes.
 309     */
 310    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 311    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 312    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 313    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 314    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 315    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 316    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 317    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 318    /*fxMesa->Glide.grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 319    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_MULTI] );
 320
 321    /* Projected texture vertex format - 48 bytes.
 322     */
 323    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 324    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 325    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 326    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 327    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 328    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 329    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 330    fxMesa->Glide.grVertexLayout( GR_PARAM_Q0, TDFX_Q0_OFFSET, GR_PARAM_ENABLE );
 331    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 332    fxMesa->Glide.grVertexLayout( GR_PARAM_Q1, TDFX_Q1_OFFSET, GR_PARAM_ENABLE );
 333    /*fxMesa->Glide.grVertexLayout( GR_PARAM_FOG_EXT, TDFX_FOG_OFFSET, GR_PARAM_ENABLE );*/
 334    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_PROJECT] );
 335
 336    UNLOCK_HARDWARE( fxMesa );
 337
 338    return GL_TRUE;
 339 }
 340
 341
 342 /*
 343  * Initialize the state in an tdfxContextPtr struct.
 344  */
 345 static GLboolean
 346 tdfxInitContext( __DRIdrawablePrivate *driDrawPriv, tdfxContextPtr fxMesa )
 347 {
 348    /* KW: Would be nice to make one of these a member of the other.
 349     */
 350    FxI32 result[2];
 351
 352    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 353       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 354    }
 355
 356 #if DEBUG_LOCKING
 357    fprintf(stderr, "Debug locking enabled\n");
 358 #endif
 359
 360    if ( fxMesa->Glide.Initialized )
 361       return GL_TRUE;
 362
 363    fxMesa->width = driDrawPriv->w;
 364    fxMesa->height = driDrawPriv->h;
 365
 366    /* We have to use a light lock here, because we can't do any glide
 367     * operations yet. No use of FX_* functions in this function.
 368     */
 369    DRM_LIGHT_LOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 370
 371    fxMesa->Glide.grGlideInit();
 372    fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 373
 374    fxMesa->Glide.Context = fxMesa->Glide.grSstWinOpen( (FxU32) -1,
 375                                          GR_RESOLUTION_NONE,
 376                                          GR_REFRESH_NONE,
 377                                          fxMesa->Glide.ColorFormat,
 378                                          fxMesa->Glide.Origin,
 379                                          2, 1 );
 380
 381    fxMesa->Glide.grDRIResetSAREA();
 382
 383    DRM_UNLOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 384
 385    if ( !fxMesa->Glide.Context )
 386       return GL_FALSE;
 387
 388
 389    /* Perform the Glide-dependant part of the context initialization.
 390     */
 391    FX_grColorMaskv( fxMesa->glCtx, true4 );
 392
 393    tdfxTMInit( fxMesa );
 394
 395    LOCK_HARDWARE( fxMesa );
 396
 397    if ( fxMesa->glCtx->Visual.depthBits > 0 ) {
 398       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
 399    } else {
 400       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_DISABLE);
 401    }
 402
 403    fxMesa->Glide.grLfbWriteColorFormat( GR_COLORFORMAT_ABGR );
 404
 405    fxMesa->Glide.grGet( GR_TEXTURE_ALIGN, sizeof(FxI32), result );
 406    fxMesa->Glide.TextureAlign = result[0];
 407
 408    fxMesa->Glide.State = NULL;
 409    fxMesa->Glide.grGet( GR_GLIDE_STATE_SIZE, sizeof(FxI32), result );
 410    fxMesa->Glide.State = MALLOC( result[0] );
 411
 412    fxMesa->Fog.Table = NULL;
 413    fxMesa->Glide.grGet( GR_FOG_TABLE_ENTRIES, sizeof(FxI32), result );
 414    fxMesa->Fog.Table = MALLOC( result[0] * sizeof(GrFog_t) );
 415
 416    UNLOCK_HARDWARE( fxMesa );
 417
 418    if ( !fxMesa->Glide.State || !fxMesa->Fog.Table ) {
 419       if ( fxMesa->Glide.State )
 420          FREE( fxMesa->Glide.State );
 421       if ( fxMesa->Fog.Table )
 422          FREE( fxMesa->Fog.Table );
 423       return GL_FALSE;
 424    }
 425
 426    if ( !tdfxInitVertexFormats( fxMesa ) ) {
 427       return GL_FALSE;
 428    }
 429
 430    LOCK_HARDWARE( fxMesa );
 431
 432    fxMesa->Glide.grGlideGetState( fxMesa->Glide.State );
 433
 434    if ( getenv( "FX_GLIDE_INFO" ) ) {
 435       printf( "GR_RENDERER  = %s\n", (char *) fxMesa->Glide.grGetString( GR_RENDERER ) );
 436       printf( "GR_VERSION   = %s\n", (char *) fxMesa->Glide.grGetString( GR_VERSION ) );
 437       printf( "GR_VENDOR    = %s\n", (char *) fxMesa->Glide.grGetString( GR_VENDOR ) );
 438       printf( "GR_HARDWARE  = %s\n", (char *) fxMesa->Glide.grGetString( GR_HARDWARE ) );
 439       printf( "GR_EXTENSION = %s\n", (char *) fxMesa->Glide.grGetString( GR_EXTENSION ) );
 440    }
 441
 442    UNLOCK_HARDWARE( fxMesa );
 443
 444    {
 445       const char *debug = getenv("LIBGL_DEBUG");
 446       if (debug && strstr(debug, "fallbacks")) {
 447          fxMesa->debugFallbacks = GL_TRUE;
 448       }
 449    }
 450
 451
 452    fxMesa->numClipRects = 0;
 453    fxMesa->pClipRects = NULL;
 454    fxMesa->scissoredClipRects = GL_FALSE;
 455
 456    fxMesa->Glide.Initialized = GL_TRUE;
 457
 458    return GL_TRUE;
 459 }
 460
 461
 462 void
 463 tdfxDestroyContext( __DRIcontextPrivate *driContextPriv )
 464 {
 465    tdfxContextPtr fxMesa = (tdfxContextPtr) driContextPriv->driverPrivate;
 466
 467    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 468       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 469    }
 470
 471    if ( fxMesa ) {
 472       if (fxMesa->glCtx->Shared->RefCount == 1 && fxMesa->driDrawable) {
 473          /* This share group is about to go away, free our private
 474           * texture object data.
 475           */
 476          struct gl_texture_object *tObj;
 477          tObj = fxMesa->glCtx->Shared->TexObjectList;
 478          while (tObj) {
 479             tdfxTMFreeTexture(fxMesa, tObj);
 480             tObj = tObj->Next;
 481          }
 482       }
 483
 484       tdfxTMClose(fxMesa);  /* free texture memory */
 485
 486       _swsetup_DestroyContext( fxMesa->glCtx );
 487       _tnl_DestroyContext( fxMesa->glCtx );
 488       _ac_DestroyContext( fxMesa->glCtx );
 489       _swrast_DestroyContext( fxMesa->glCtx );
 490
 491       tdfxFreeVB( fxMesa->glCtx );
 492
 493       /* Free Mesa context */
 494       fxMesa->glCtx->DriverCtx = NULL;
 495       _mesa_destroy_context(fxMesa->glCtx);
 496
 497       /* free the tdfx context */
 498       XFree( fxMesa );
 499    }
 500 }
 501
 502
 503 GLboolean
 504 tdfxUnbindContext( __DRIcontextPrivate *driContextPriv )
 505 {
 506    GET_CURRENT_CONTEXT(ctx);
 507    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 508
 509    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 510       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 511    }
 512
 513    if ( driContextPriv && (tdfxContextPtr) driContextPriv == fxMesa ) {
 514       LOCK_HARDWARE(fxMesa);
 515       fxMesa->Glide.grGlideGetState(fxMesa->Glide.State);
 516       UNLOCK_HARDWARE(fxMesa);
 517    }
 518    return GL_TRUE;
 519 }
 520
 521
 522 GLboolean
 523 tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
 524                  __DRIdrawablePrivate *driDrawPriv,
 525                  __DRIdrawablePrivate *driReadPriv )
 526 {
 527    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 528       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 529    }
 530
 531    if ( driContextPriv ) {
 532       tdfxContextPtr newFx = (tdfxContextPtr) driContextPriv->driverPrivate;
 533       GLcontext *newCtx = newFx->glCtx;
 534       GET_CURRENT_CONTEXT(curCtx);
 535
 536       if ( newFx->driDrawable != driDrawPriv ) {
 537          newFx->driDrawable = driDrawPriv;
 538          newFx->dirty = ~0;
 539       }
 540       else if (curCtx == newCtx) {
 541          /* same drawable, same context -> no-op */
 542          /* Need to call _mesa_make_current2() in order to make sure API
 543           * dispatch is set correctly.
 544           */
 545          _mesa_make_current2( newCtx,
 546                               (GLframebuffer *) driDrawPriv->driverPrivate,
 547                               (GLframebuffer *) driReadPriv->driverPrivate );
 548          return GL_TRUE;
 549       }
 550
 551       if ( !newFx->Glide.Initialized ) {
 552          if ( !tdfxInitContext( driDrawPriv, newFx ) )
 553             return GL_FALSE;
 554
 555          LOCK_HARDWARE( newFx );
 556
 557          /* FIXME: Force loading of window information */
 558          newFx->width = 0;
 559          tdfxUpdateClipping(newCtx);
 560          tdfxUploadClipping(newFx);
 561
 562          UNLOCK_HARDWARE( newFx );
 563       } else {
 564          LOCK_HARDWARE( newFx );
 565
 566          newFx->Glide.grSstSelect( newFx->Glide.Board );
 567          newFx->Glide.grGlideSetState( newFx->Glide.State );
 568
 569          tdfxUpdateClipping(newCtx);
 570          tdfxUploadClipping(newFx);
 571
 572          UNLOCK_HARDWARE( newFx );
 573       }
 574
 575       _mesa_make_current2( newCtx,
 576                            (GLframebuffer *) driDrawPriv->driverPrivate,
 577                            (GLframebuffer *) driReadPriv->driverPrivate );
 578
 579       if ( !newCtx->Viewport.Width ) {
 580          _mesa_set_viewport( newCtx, 0, 0, driDrawPriv->w, driDrawPriv->h );
 581       }
 582    } else {
 583       _mesa_make_current( 0, 0 );
 584    }
 585
 586    return GL_TRUE;
 587 }
 588
 589
 590 /*
 591  * Enable this to trace calls to various Glide functions.
 592  */
 593 /*#define DEBUG_TRAP*/
 594 #ifdef DEBUG_TRAP
 595 static void (*real_grDrawTriangle)( const void *a, const void *b, const void *c );
 596 static void (*real_grDrawPoint)( const void *a );
 597 static void (*real_grDrawVertexArray)(FxU32 mode, FxU32 Count, void *pointers);
 598 static void (*real_grDrawVertexArrayContiguous)(FxU32 mode, FxU32 Count,
 599                                        void *pointers, FxU32 stride);
 600 static void (*real_grClipWindow)( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy );
 601
 602 static void (*real_grVertexLayout)(FxU32 param, FxI32 offset, FxU32 mode);
 603 static void (*real_grGlideGetVertexLayout)( void *layout );
 604 static void (*real_grGlideSetVertexLayout)( const void *layout );
 605
 606 static void (*real_grTexDownloadMipMapLevel)( GrChipID_t        tmu,
 607                                      FxU32             startAddress,
 608                                      GrLOD_t           thisLod,
 609                                      GrLOD_t           largeLod,
 610                                      GrAspectRatio_t   aspectRatio,
 611                                      GrTextureFormat_t format,
 612                                      FxU32             evenOdd,
 613                                               void              *data );
 614
 615
 616 static void debug_grDrawTriangle( const void *a, const void *b, const void *c )
 617 {
 618    printf("%s\n", __FUNCTION__);
 619    (*real_grDrawTriangle)(a, b, c);
 620 }
 621
 622 static void debug_grDrawPoint( const void *a )
 623 {
 624    const float *f = (const float *) a;
 625    printf("%s %g %g\n", __FUNCTION__, f[0], f[1]);
 626    (*real_grDrawPoint)(a);
 627 }
 628
 629 static void debug_grDrawVertexArray(FxU32 mode, FxU32 Count, void *pointers)
 630 {
 631    printf("%s count=%d\n", __FUNCTION__, (int) Count);
 632    (*real_grDrawVertexArray)(mode, Count, pointers);
 633 }
 634
 635 static void debug_grDrawVertexArrayContiguous(FxU32 mode, FxU32 Count,
 636                                        void *pointers, FxU32 stride)
 637 {
 638    printf("%s mode=0x%x count=%d\n", __FUNCTION__, (int) mode, (int) Count);
 639    (*real_grDrawVertexArrayContiguous)(mode, Count, pointers, stride);
 640 }
 641
 642 static void debug_grClipWindow( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy )
 643 {
 644    printf("%s %d,%d .. %d,%d\n", __FUNCTION__,
 645           (int) minx, (int) miny, (int) maxx, (int) maxy);
 646    (*real_grClipWindow)(minx, miny, maxx, maxy);
 647 }
 648
 649 static void debug_grVertexLayout(FxU32 param, FxI32 offset, FxU32 mode)
 650 {
 651    (*real_grVertexLayout)(param, offset, mode);
 652 }
 653
 654 static void debug_grGlideGetVertexLayout( void *layout )
 655 {
 656    (*real_grGlideGetVertexLayout)(layout);
 657 }
 658
 659 static void debug_grGlideSetVertexLayout( const void *layout )
 660 {
 661    (*real_grGlideSetVertexLayout)(layout);
 662 }
 663
 664 static void debug_grTexDownloadMipMapLevel( GrChipID_t        tmu,
 665                                      FxU32             startAddress,
 666                                      GrLOD_t           thisLod,
 667                                      GrLOD_t           largeLod,
 668                                      GrAspectRatio_t   aspectRatio,
 669                                      GrTextureFormat_t format,
 670                                      FxU32             evenOdd,
 671                                      void              *data )
 672 {
 673    (*real_grTexDownloadMipMapLevel)(tmu, startAddress, thisLod, largeLod,
 674                                     aspectRatio, format, evenOdd, data);
 675 }
 676
 677 #endif
 678
 679
 680 /*
 681  * Examine the context's deviceID to determine what kind of 3dfx hardware
 682  * is installed.  dlopen() the appropriate Glide library and initialize
 683  * this context's Glide function pointers.
 684  * Return:  true/false = success/failure
 685  */
 686 GLboolean tdfxInitGlide(tdfxContextPtr tmesa)
 687 {
 688    static const char *defaultGlide = "libglide3.so";
 689    const char *libName;
 690    void *libHandle;
 691
 692    /*
 693     * XXX this code which selects a Glide library filename given the
 694     * deviceID may need to be cleaned up a bit.
 695     * Non-Linux systems may have different filenames, for example.
 696     */
 697    switch (tmesa->fxScreen->deviceID) {
 698    case PCI_CHIP_BANSHEE:
 699    case PCI_CHIP_VOODOO3:
 700       libName = "libglide3-v3.so";
 701       break;
 702    case PCI_CHIP_VOODOO5:   /* same as PCI_CHIP_VOODOO4 */
 703       libName = "libglide3-v5.so";
 704       break;
 705    default:
 706       {
 707          __driUtilMessage("unrecognized 3dfx deviceID: 0x%x",
 708                  tmesa->fxScreen->deviceID);
 709       }
 710       return GL_FALSE;
 711    }
 712
 713    libHandle = dlopen(libName, RTLD_NOW);
 714    if (!libHandle) {
 715       /* The device-specific Glide library filename didn't work, try the
 716        * old, generic libglide3.so library.
 717        */
 718       libHandle = dlopen(defaultGlide, RTLD_NOW);
 719       if (!libHandle) {
 720          __driUtilMessage(
 721             "can't find Glide library, dlopen(%s) and dlopen(%s) both failed.",
 722             libName, defaultGlide);
 723          __driUtilMessage("dlerror() message: %s", dlerror());
 724          return GL_FALSE;
 725       }
 726       libName = defaultGlide;
 727    }
 728
 729    {
 730       const char *env = getenv("LIBGL_DEBUG");
 731       if (env && strstr(env, "verbose")) {
 732          fprintf(stderr, "libGL: using Glide library %s\n", libName);
 733       }
 734    }
 735
 736 #define GET_FUNCTION(PTR, NAME)                                         \
 737    tmesa->Glide.PTR = dlsym(libHandle, NAME);                           \
 738    if (!tmesa->Glide.PTR) {                                             \
 739       __driUtilMessage("couldn't find Glide function %s in %s.",        \
 740               NAME, libName);                                           \
 741    }
 742
 743    GET_FUNCTION(grDrawPoint, "grDrawPoint");
 744    GET_FUNCTION(grDrawLine, "grDrawLine");
 745    GET_FUNCTION(grDrawTriangle, "grDrawTriangle");
 746    GET_FUNCTION(grVertexLayout, "grVertexLayout");
 747    GET_FUNCTION(grDrawVertexArray, "grDrawVertexArray");
 748    GET_FUNCTION(grDrawVertexArrayContiguous, "grDrawVertexArrayContiguous");
 749    GET_FUNCTION(grBufferClear, "grBufferClear");
 750    /*GET_FUNCTION(grBufferSwap, "grBufferSwap");*/
 751    GET_FUNCTION(grRenderBuffer, "grRenderBuffer");
 752    GET_FUNCTION(grErrorSetCallback, "grErrorSetCallback");
 753    GET_FUNCTION(grFinish, "grFinish");
 754    GET_FUNCTION(grFlush, "grFlush");
 755    GET_FUNCTION(grSstWinOpen, "grSstWinOpen");
 756    GET_FUNCTION(grSstWinClose, "grSstWinClose");
 757 #if 0
 758    /* Not in V3 lib, and not used anyway. */
 759    GET_FUNCTION(grSetNumPendingBuffers, "grSetNumPendingBuffers");
 760 #endif
 761    GET_FUNCTION(grSelectContext, "grSelectContext");
 762    GET_FUNCTION(grSstOrigin, "grSstOrigin");
 763    GET_FUNCTION(grSstSelect, "grSstSelect");
 764    GET_FUNCTION(grAlphaBlendFunction, "grAlphaBlendFunction");
 765    GET_FUNCTION(grAlphaCombine, "grAlphaCombine");
 766    GET_FUNCTION(grAlphaControlsITRGBLighting, "grAlphaControlsITRGBLighting");
 767    GET_FUNCTION(grAlphaTestFunction, "grAlphaTestFunction");
 768    GET_FUNCTION(grAlphaTestReferenceValue, "grAlphaTestReferenceValue");
 769    GET_FUNCTION(grChromakeyMode, "grChromakeyMode");
 770    GET_FUNCTION(grChromakeyValue, "grChromakeyValue");
 771    GET_FUNCTION(grClipWindow, "grClipWindow");
 772    GET_FUNCTION(grColorCombine, "grColorCombine");
 773    GET_FUNCTION(grColorMask, "grColorMask");
 774    GET_FUNCTION(grCullMode, "grCullMode");
 775    GET_FUNCTION(grConstantColorValue, "grConstantColorValue");
 776    GET_FUNCTION(grDepthBiasLevel, "grDepthBiasLevel");
 777    GET_FUNCTION(grDepthBufferFunction, "grDepthBufferFunction");
 778    GET_FUNCTION(grDepthBufferMode, "grDepthBufferMode");
 779    GET_FUNCTION(grDepthMask, "grDepthMask");
 780    GET_FUNCTION(grDisableAllEffects, "grDisableAllEffects");
 781    GET_FUNCTION(grDitherMode, "grDitherMode");
 782    GET_FUNCTION(grFogColorValue, "grFogColorValue");
 783    GET_FUNCTION(grFogMode, "grFogMode");
 784    GET_FUNCTION(grFogTable, "grFogTable");
 785    GET_FUNCTION(grLoadGammaTable, "grLoadGammaTable");
 786    GET_FUNCTION(grSplash, "grSplash");
 787    GET_FUNCTION(grGet, "grGet");
 788    GET_FUNCTION(grGetString, "grGetString");
 789    GET_FUNCTION(grQueryResolutions, "grQueryResolutions");
 790    GET_FUNCTION(grReset, "grReset");
 791    GET_FUNCTION(grGetProcAddress, "grGetProcAddress");
 792    GET_FUNCTION(grEnable, "grEnable");
 793    GET_FUNCTION(grDisable, "grDisable");
 794    GET_FUNCTION(grCoordinateSpace, "grCoordinateSpace");
 795    GET_FUNCTION(grDepthRange, "grDepthRange");
 796    GET_FUNCTION(grStippleMode, "grStippleMode");
 797    GET_FUNCTION(grStipplePattern, "grStipplePattern");
 798    GET_FUNCTION(grViewport, "grViewport");
 799    GET_FUNCTION(grTexCalcMemRequired, "grTexCalcMemRequired");
 800    GET_FUNCTION(grTexTextureMemRequired, "grTexTextureMemRequired");
 801    GET_FUNCTION(grTexMinAddress, "grTexMinAddress");
 802    GET_FUNCTION(grTexMaxAddress, "grTexMaxAddress");
 803    GET_FUNCTION(grTexNCCTable, "grTexNCCTable");
 804    GET_FUNCTION(grTexSource, "grTexSource");
 805    GET_FUNCTION(grTexClampMode, "grTexClampMode");
 806    GET_FUNCTION(grTexCombine, "grTexCombine");
 807    GET_FUNCTION(grTexDetailControl, "grTexDetailControl");
 808    GET_FUNCTION(grTexFilterMode, "grTexFilterMode");
 809    GET_FUNCTION(grTexLodBiasValue, "grTexLodBiasValue");
 810    GET_FUNCTION(grTexDownloadMipMap, "grTexDownloadMipMap");
 811    GET_FUNCTION(grTexDownloadMipMapLevel, "grTexDownloadMipMapLevel");
 812    GET_FUNCTION(grTexDownloadMipMapLevelPartial, "grTexDownloadMipMapLevelPartial");
 813    GET_FUNCTION(grTexDownloadTable, "grTexDownloadTable");
 814    GET_FUNCTION(grTexDownloadTablePartial, "grTexDownloadTablePartial");
 815    GET_FUNCTION(grTexMipMapMode, "grTexMipMapMode");
 816    GET_FUNCTION(grTexMultibase, "grTexMultibase");
 817    GET_FUNCTION(grTexMultibaseAddress, "grTexMultibaseAddress");
 818    GET_FUNCTION(grLfbLock, "grLfbLock");
 819    GET_FUNCTION(grLfbUnlock, "grLfbUnlock");
 820    GET_FUNCTION(grLfbConstantAlpha, "grLfbConstantAlpha");
 821    GET_FUNCTION(grLfbConstantDepth, "grLfbConstantDepth");
 822    GET_FUNCTION(grLfbWriteColorSwizzle, "grLfbWriteColorSwizzle");
 823    GET_FUNCTION(grLfbWriteColorFormat, "grLfbWriteColorFormat");
 824    GET_FUNCTION(grLfbWriteRegion, "grLfbWriteRegion");
 825    GET_FUNCTION(grLfbReadRegion, "grLfbReadRegion");
 826    GET_FUNCTION(grGlideInit, "grGlideInit");
 827    GET_FUNCTION(grGlideShutdown, "grGlideShutdown");
 828    GET_FUNCTION(grGlideGetState, "grGlideGetState");
 829    GET_FUNCTION(grGlideSetState, "grGlideSetState");
 830    GET_FUNCTION(grGlideGetVertexLayout, "grGlideGetVertexLayout");
 831    GET_FUNCTION(grGlideSetVertexLayout, "grGlideSetVertexLayout");
 832
 833    /* Glide utility functions */
 834    GET_FUNCTION(guFogGenerateExp, "guFogGenerateExp");
 835    GET_FUNCTION(guFogGenerateExp2, "guFogGenerateExp2");
 836    GET_FUNCTION(guFogGenerateLinear, "guFogGenerateLinear");
 837
 838    /* DRI functions */
 839    GET_FUNCTION(grDRIOpen, "grDRIOpen");
 840    GET_FUNCTION(grDRIPosition, "grDRIPosition");
 841    /*GET_FUNCTION(grDRILostContext, "grDRILostContext");*/
 842    GET_FUNCTION(grDRIImportFifo, "grDRIImportFifo");
 843    GET_FUNCTION(grDRIInvalidateAll, "grDRIInvalidateAll");
 844    GET_FUNCTION(grDRIResetSAREA, "grDRIResetSAREA");
 845    GET_FUNCTION(grDRIBufferSwap, "grDRIBufferSwap");
 846
 847    /*
 848     * Extension functions:
 849     * Just use dlysm() because we want a NULL pointer if the function is
 850     * not found.
 851     */
 852    /* PIXEXT extension */
 853    tmesa->Glide.grStencilFunc = dlsym(libHandle, "grStencilFunc");
 854    tmesa->Glide.grStencilMask = dlsym(libHandle, "grStencilMask");
 855    tmesa->Glide.grStencilOp = dlsym(libHandle, "grStencilOp");
 856    tmesa->Glide.grBufferClearExt = dlsym(libHandle, "grBufferClearExt");
 857    tmesa->Glide.grColorMaskExt = dlsym(libHandle, "grColorMaskExt");
 858    /* COMBINE extension */
 859    tmesa->Glide.grColorCombineExt = dlsym(libHandle, "grColorCombineExt");
 860    tmesa->Glide.grTexColorCombineExt = dlsym(libHandle, "grTexColorCombineExt");
 861    tmesa->Glide.grAlphaCombineExt = dlsym(libHandle, "grAlphaCombineExt");
 862    tmesa->Glide.grTexAlphaCombineExt = dlsym(libHandle, "grTexAlphaCombineExt");
 863    tmesa->Glide.grAlphaBlendFunctionExt = dlsym(libHandle, "grAlphaBlendFunctionExt");
 864    tmesa->Glide.grConstantColorValueExt = dlsym(libHandle, "grConstantColorValueExt");
 865    /* Texus 2 */
 866    tmesa->Glide.txImgQuantize = dlsym(libHandle, "txImgQuantize");
 867    tmesa->Glide.txImgDequantizeFXT1 = dlsym(libHandle, "_txImgDequantizeFXT1");
 868    tmesa->Glide.txErrorSetCallback = dlsym(libHandle, "txErrorSetCallback");
 869
 870 #ifdef DEBUG_TRAP
 871    /* wrap the drawing functions so we can trap them */
 872    real_grDrawTriangle = tmesa->Glide.grDrawTriangle;
 873    tmesa->Glide.grDrawTriangle = debug_grDrawTriangle;
 874
 875    real_grDrawPoint = tmesa->Glide.grDrawPoint;
 876    tmesa->Glide.grDrawPoint = debug_grDrawPoint;
 877
 878    real_grDrawVertexArray = tmesa->Glide.grDrawVertexArray;
 879    tmesa->Glide.grDrawVertexArray = debug_grDrawVertexArray;
 880
 881    real_grDrawVertexArrayContiguous = tmesa->Glide.grDrawVertexArrayContiguous;
 882    tmesa->Glide.grDrawVertexArrayContiguous = debug_grDrawVertexArrayContiguous;
 883
 884    real_grClipWindow = tmesa->Glide.grClipWindow;
 885    tmesa->Glide.grClipWindow = debug_grClipWindow;
 886
 887    real_grVertexLayout = tmesa->Glide.grVertexLayout;
 888    tmesa->Glide.grVertexLayout = debug_grVertexLayout;
 889
 890    real_grGlideGetVertexLayout = tmesa->Glide.grGlideGetVertexLayout;
 891    tmesa->Glide.grGlideGetVertexLayout = debug_grGlideGetVertexLayout;
 892
 893    real_grGlideSetVertexLayout = tmesa->Glide.grGlideSetVertexLayout;
 894    tmesa->Glide.grGlideSetVertexLayout = debug_grGlideSetVertexLayout;
 895
 896    real_grTexDownloadMipMapLevel = tmesa->Glide.grTexDownloadMipMapLevel;
 897    tmesa->Glide.grTexDownloadMipMapLevel = debug_grTexDownloadMipMapLevel;
 898
 899 #endif
 900    return GL_TRUE;
 901 }