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
  27 /**
  28  * \file tdfx_context.c
  29  * Context management functions for 3Dfx hardware.
  30  *
  31  * \author Gareth Hughes <gareth@valinux.com> (original rewrite 29 Sep - 1 Oct 2000)
  32  * \author Brian Paul <brianp@valinux.com>
  33  * \author Daniel Borca <dborca@users.sourceforge.net> (new fixes 19 Jul 2004)
  34  */
  35
  36 #include <dlfcn.h>
  37 #include "tdfx_context.h"
  38 #include "tdfx_dd.h"
  39 #include "tdfx_state.h"
  40 #include "tdfx_vb.h"
  41 #include "tdfx_tex.h"
  42 #include "tdfx_tris.h"
  43 #include "tdfx_render.h"
  44 #include "tdfx_span.h"
  45 #include "tdfx_texman.h"
  46 #include "main/extensions.h"
  47 #include "main/hash.h"
  48 #include "main/texobj.h"
  49
  50 #include "swrast/swrast.h"
  51 #include "swrast_setup/swrast_setup.h"
  52 #include "vbo/vbo.h"
  53
  54 #include "tnl/tnl.h"
  55 #include "tnl/t_pipeline.h"
  56
  57 #include "drivers/common/driverfuncs.h"
  58
  59 #include "utils.h"
  60
  61 #define need_GL_ARB_multisample
  62 /* #define need_GL_ARB_point_parameters */
  63 #define need_GL_ARB_occlusion_query
  64 #define need_GL_ARB_texture_compression
  65 #define need_GL_ARB_vertex_buffer_object
  66 /* #define need_GL_ARB_vertex_program */
  67 #define need_GL_EXT_blend_equation_separate
  68 #define need_GL_EXT_blend_func_separate
  69 #define need_GL_EXT_blend_minmax
  70 #define need_GL_EXT_fog_coord
  71 #define need_GL_EXT_multi_draw_arrays
  72 #define need_GL_EXT_paletted_texture
  73 /* #define need_GL_EXT_secondary_color */
  74 #define need_GL_IBM_multimode_draw_arrays
  75 /* #define need_GL_MESA_program_debug */
  76 /* #define need_GL_NV_vertex_program */
  77 #include "extension_helper.h"
  78
  79
  80 /**
  81  * Common extension strings exported by all cards
  82  */
  83 const struct dri_extension card_extensions[] =
  84 {
  85     { "GL_ARB_multisample",                GL_ARB_multisample_functions },
  86     { "GL_ARB_occlusion_query",            GL_ARB_occlusion_query_functions },
  87     { "GL_ARB_texture_mirrored_repeat",    NULL },
  88     { "GL_ARB_vertex_buffer_object",       GL_ARB_vertex_buffer_object_functions },
  89
  90     { "GL_EXT_blend_func_separate",        GL_EXT_blend_func_separate_functions },
  91     { "GL_EXT_fog_coord",                  GL_EXT_fog_coord_functions },
  92     { "GL_EXT_multi_draw_arrays",          GL_EXT_multi_draw_arrays_functions },
  93     { "GL_EXT_paletted_texture",           GL_EXT_paletted_texture_functions },
  94     { "GL_EXT_shared_texture_palette",     NULL },
  95     { "GL_EXT_stencil_wrap",               NULL },
  96     { "GL_EXT_texture_env_add",            NULL },
  97     { "GL_EXT_texture_lod_bias",           NULL },
  98     { "GL_IBM_multimode_draw_arrays",      GL_IBM_multimode_draw_arrays_functions },
  99
 100 #ifdef need_GL_ARB_point_parameters
 101     { "GL_ARB_point_parameters",           GL_ARB_point_parameters_functions },
 102     { "GL_ARB_point_sprite",               NULL },
 103 #endif
 104 #ifdef need_GL_EXT_secondary_color
 105     { "GL_EXT_secondary_color",            GL_EXT_secondary_color_functions },
 106 #endif
 107 #ifdef need_GL_ARB_vertex_program
 108     { "GL_ARB_vertex_program",             GL_ARB_vertex_program_functions }
 109 #endif
 110 #ifdef need_GL_NV_vertex_program
 111     { "GL_NV_vertex_program",              GL_NV_vertex_program_functions }
 112     { "GL_NV_vertex_program1_1",           NULL },
 113 #endif
 114 #ifdef need_GL_MESA_program_debug
 115     { "GL_MESA_program_debug",             GL_MESA_program_debug_functions },
 116 #endif
 117     { NULL,                                NULL }
 118 };
 119
 120 /**
 121  * Extension strings exported only by Naplam (e.g., Voodoo4 & Voodoo5) cards.
 122  */
 123 const struct dri_extension napalm_extensions[] =
 124 {
 125     { "GL_ARB_texture_compression",        GL_ARB_texture_compression_functions },
 126     { "GL_ARB_texture_env_combine",        NULL },
 127     { "GL_EXT_blend_equation_separate",    GL_EXT_blend_equation_separate_functions },
 128     { "GL_EXT_blend_subtract",             GL_EXT_blend_minmax_functions },
 129     { "GL_EXT_texture_compression_s3tc",   NULL },
 130     { "GL_EXT_texture_env_combine",        NULL },
 131
 132     { "GL_3DFX_texture_compression_FXT1",  NULL },
 133     { "GL_NV_blend_square",                NULL },
 134     { "GL_S3_s3tc",                        NULL },
 135     { NULL,                                NULL }
 136 };
 137
 138 /*
 139  * Enable/Disable the extensions for this context.
 140  */
 141 static void tdfxDDInitExtensions( GLcontext *ctx )
 142 {
 143    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 144
 145    driInitExtensions( ctx, card_extensions, GL_FALSE );
 146
 147    if ( fxMesa->haveTwoTMUs ) {
 148       _mesa_enable_extension( ctx, "GL_ARB_multitexture" );
 149    }
 150
 151    if ( TDFX_IS_NAPALM( fxMesa ) ) {
 152       driInitExtensions( ctx, napalm_extensions, GL_FALSE );
 153    } else {
 154       _mesa_enable_extension( ctx, "GL_SGIS_generate_mipmap" );
 155    }
 156 }
 157
 158
 159
 160 static const struct tnl_pipeline_stage *tdfx_pipeline[] = {
 161    &_tnl_vertex_transform_stage,
 162    &_tnl_normal_transform_stage,
 163    &_tnl_lighting_stage,
 164    &_tnl_fog_coordinate_stage,
 165    &_tnl_texgen_stage,
 166    &_tnl_texture_transform_stage,
 167    &_tnl_point_attenuation_stage,
 168    &_tnl_render_stage,
 169    0,
 170 };
 171
 172 static const struct dri_debug_control debug_control[] =
 173 {
 174     { "dri",   DEBUG_VERBOSE_DRI },
 175     { "sync",  DEBUG_ALWAYS_SYNC },
 176     { "api",   DEBUG_VERBOSE_API },
 177     { "fall",  DEBUG_VERBOSE_FALL },
 178     { NULL,    0 }
 179 };
 180
 181 GLboolean tdfxCreateContext( const __GLcontextModes *mesaVis,
 182                              __DRIcontextPrivate *driContextPriv,
 183                              void *sharedContextPrivate )
 184 {
 185    tdfxContextPtr fxMesa;
 186    GLcontext *ctx, *shareCtx;
 187    __DRIscreenPrivate *sPriv = driContextPriv->driScreenPriv;
 188    tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
 189    TDFXSAREAPriv *saPriv = (TDFXSAREAPriv *) ((char *) sPriv->pSAREA +
 190                                               sizeof(drm_sarea_t));
 191    struct dd_function_table functions;
 192
 193    /* Allocate tdfx context */
 194    fxMesa = (tdfxContextPtr) CALLOC( sizeof(tdfxContextRec) );
 195    if (!fxMesa)
 196       return GL_FALSE;
 197
 198    /* Init default driver functions then plug in our tdfx-specific functions
 199     * (the texture functions are especially important)
 200     */
 201    _mesa_init_driver_functions(&functions);
 202    tdfxDDInitDriverFuncs(mesaVis, &functions);
 203    tdfxInitTextureFuncs(&functions);
 204    tdfxInitRenderFuncs(&functions);
 205
 206    /* Allocate the Mesa context */
 207    if (sharedContextPrivate)
 208       shareCtx = ((tdfxContextPtr) sharedContextPrivate)->glCtx;
 209    else
 210       shareCtx = NULL;
 211
 212    fxMesa->glCtx = _mesa_create_context(mesaVis, shareCtx,
 213                                         &functions, (void *) fxMesa);
 214    if (!fxMesa->glCtx) {
 215       FREE(fxMesa);
 216       return GL_FALSE;
 217    }
 218    driContextPriv->driverPrivate = fxMesa;
 219
 220    /* Mirror some important DRI state
 221     */
 222    fxMesa->hHWContext = driContextPriv->hHWContext;
 223    fxMesa->driHwLock = &sPriv->pSAREA->lock;
 224    fxMesa->driFd = sPriv->fd;
 225
 226    fxMesa->driScreen = sPriv;
 227    fxMesa->driContext = driContextPriv;
 228    fxMesa->fxScreen = fxScreen;
 229    fxMesa->sarea = saPriv;
 230
 231    /*JJJ - really?*/
 232    fxMesa->haveHwAlpha = ( mesaVis->alphaBits &&
 233                            ((mesaVis->greenBits == 8) ||
 234                             (mesaVis->depthBits == 0)) );
 235    fxMesa->haveHwStencil = ( TDFX_IS_NAPALM( fxMesa ) &&
 236                              mesaVis->stencilBits &&
 237                              mesaVis->depthBits == 24 );
 238
 239    fxMesa->screen_width = fxScreen->width;
 240    fxMesa->screen_height = fxScreen->height;
 241
 242    fxMesa->new_gl_state = ~0;
 243    fxMesa->new_state = ~0;
 244    fxMesa->dirty = ~0;
 245
 246    /* Parse configuration files */
 247    driParseConfigFiles (&fxMesa->optionCache, &fxScreen->optionCache,
 248                         fxMesa->driScreen->myNum, "tdfx");
 249
 250    /* NOTE: This must be here before any Glide calls! */
 251    if (!tdfxInitGlide( fxMesa )) {
 252       FREE(fxMesa);
 253       return GL_FALSE;
 254    }
 255
 256    fxMesa->Glide.grDRIOpen( (char*) sPriv->pFB, fxScreen->regs.map, fxScreen->deviceID,
 257               fxScreen->width, fxScreen->height, fxScreen->mem, fxScreen->cpp,
 258               fxScreen->stride, fxScreen->fifoOffset, fxScreen->fifoSize,
 259               fxScreen->fbOffset, fxScreen->backOffset, fxScreen->depthOffset,
 260               fxScreen->textureOffset, fxScreen->textureSize, &saPriv->fifoPtr,
 261               &saPriv->fifoRead );
 262
 263    if ( getenv( "FX_GLIDE_SWAPINTERVAL" ) ) {
 264       fxMesa->Glide.SwapInterval = atoi( getenv( "FX_GLIDE_SWAPINTERVAL" ) );
 265    } else {
 266       fxMesa->Glide.SwapInterval = 0;
 267    }
 268    if ( getenv( "FX_MAX_PENDING_SWAPS" ) ) {
 269       fxMesa->Glide.MaxPendingSwaps = atoi( getenv( "FX_MAX_PENDING_SWAPS" ) );
 270    } else {
 271       fxMesa->Glide.MaxPendingSwaps = 2;
 272    }
 273
 274    fxMesa->Glide.Initialized = GL_FALSE;
 275    fxMesa->Glide.Board = 0;
 276
 277
 278    if (getenv("FX_EMULATE_SINGLE_TMU")) {
 279       fxMesa->haveTwoTMUs = GL_FALSE;
 280    }
 281    else {
 282       if ( TDFX_IS_BANSHEE( fxMesa ) ) {
 283          fxMesa->haveTwoTMUs = GL_FALSE;
 284       } else {
 285          fxMesa->haveTwoTMUs = GL_TRUE;
 286       }
 287    }
 288
 289    fxMesa->stats.swapBuffer = 0;
 290    fxMesa->stats.reqTexUpload = 0;
 291    fxMesa->stats.texUpload = 0;
 292    fxMesa->stats.memTexUpload = 0;
 293
 294    fxMesa->tmuSrc = TDFX_TMU_NONE;
 295
 296    ctx = fxMesa->glCtx;
 297    if ( TDFX_IS_NAPALM( fxMesa ) ) {
 298       ctx->Const.MaxTextureLevels = 12;
 299    } else {
 300       ctx->Const.MaxTextureLevels = 9;
 301    }
 302    ctx->Const.MaxTextureUnits = TDFX_IS_BANSHEE( fxMesa ) ? 1 : 2;
 303    ctx->Const.MaxTextureImageUnits = ctx->Const.MaxTextureUnits;
 304    ctx->Const.MaxTextureCoordUnits = ctx->Const.MaxTextureUnits;
 305
 306    /* No wide points.
 307     */
 308    ctx->Const.MinPointSize = 1.0;
 309    ctx->Const.MinPointSizeAA = 1.0;
 310    ctx->Const.MaxPointSize = 1.0;
 311    ctx->Const.MaxPointSizeAA = 1.0;
 312
 313    /* Disable wide lines as we can't antialias them correctly in
 314     * hardware.
 315     */
 316    ctx->Const.MinLineWidth = 1.0;
 317    ctx->Const.MinLineWidthAA = 1.0;
 318    ctx->Const.MaxLineWidth = 1.0;
 319    ctx->Const.MaxLineWidthAA = 1.0;
 320    ctx->Const.LineWidthGranularity = 1.0;
 321
 322    /* Initialize the software rasterizer and helper modules.
 323     */
 324    _swrast_CreateContext( ctx );
 325    _vbo_CreateContext( ctx );
 326    _tnl_CreateContext( ctx );
 327    _swsetup_CreateContext( ctx );
 328
 329    /* Install the customized pipeline:
 330     */
 331    _tnl_destroy_pipeline( ctx );
 332    _tnl_install_pipeline( ctx, tdfx_pipeline );
 333
 334    /* Configure swrast and T&L to match hardware characteristics:
 335     */
 336    _swrast_allow_pixel_fog( ctx, GL_TRUE );
 337    _swrast_allow_vertex_fog( ctx, GL_FALSE );
 338    _tnl_allow_pixel_fog( ctx, GL_TRUE );
 339    _tnl_allow_vertex_fog( ctx, GL_FALSE );
 340
 341    tdfxDDInitExtensions( ctx );
 342    /* XXX these should really go right after _mesa_init_driver_functions() */
 343    tdfxDDInitSpanFuncs( ctx );
 344    tdfxDDInitStateFuncs( ctx );
 345    tdfxDDInitTriFuncs( ctx );
 346    tdfxInitVB( ctx );
 347    tdfxInitState( fxMesa );
 348
 349 #if DO_DEBUG
 350    TDFX_DEBUG = driParseDebugString( getenv( "TDFX_DEBUG" ), debug_control );
 351 #endif
 352
 353    if (driQueryOptionb(&fxMesa->optionCache, "no_rast")) {
 354       fprintf(stderr, "disabling 3D acceleration\n");
 355       FALLBACK(fxMesa, TDFX_FALLBACK_DISABLE, 1);
 356    }
 357
 358    return GL_TRUE;
 359 }
 360
 361
 362 static GLboolean tdfxInitVertexFormats( tdfxContextPtr fxMesa )
 363 {
 364    FxI32 result;
 365    int i;
 366
 367    LOCK_HARDWARE( fxMesa );
 368
 369    fxMesa->Glide.grGet( GR_GLIDE_VERTEXLAYOUT_SIZE, sizeof(FxI32), &result );
 370    for ( i = 0 ; i < TDFX_NUM_LAYOUTS ; i++ ) {
 371       fxMesa->layout[i] = MALLOC( result );
 372       if ( !fxMesa->layout[i] ) {
 373          UNLOCK_HARDWARE( fxMesa );
 374          return GL_FALSE;
 375       }
 376    }
 377
 378    /* Tiny vertex format - 16 bytes.
 379     */
 380    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 381    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 382    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 383    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 384    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 385    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_TINY] );
 386
 387    /* Non textured vertex format - 24 bytes (Need w for table fog)
 388     */
 389    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 390    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 391    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 392    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 393    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 394    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 395    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_NOTEX] );
 396
 397    /* Single textured vertex format - 32 bytes.
 398     */
 399    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 400    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 401    fxMesa->Glide.grVertexLayout( GR_PARAM_XY,   TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 402    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 403    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 404    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 405    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 406    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_SINGLE] );
 407
 408    /* Multitextured vertex format - 40 bytes.
 409     */
 410    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 411    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 412    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 413    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 414    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 415    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 416    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 417    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 418    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_MULTI] );
 419
 420    /* Projected texture vertex format - 36 bytes.
 421     */
 422    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 423    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 424    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 425    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 426    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 427    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 428    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 429    fxMesa->Glide.grVertexLayout( GR_PARAM_Q0, TDFX_Q0_OFFSET, GR_PARAM_ENABLE );
 430    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_PROJ1] );
 431
 432    /* Projected multitexture vertex format - 48 bytes.
 433     */
 434    fxMesa->Glide.grReset( GR_VERTEX_PARAMETER );
 435    fxMesa->Glide.grCoordinateSpace( GR_WINDOW_COORDS );
 436    fxMesa->Glide.grVertexLayout( GR_PARAM_XY, TDFX_XY_OFFSET, GR_PARAM_ENABLE );
 437    fxMesa->Glide.grVertexLayout( GR_PARAM_Z, TDFX_Z_OFFSET, GR_PARAM_ENABLE );
 438    fxMesa->Glide.grVertexLayout( GR_PARAM_Q, TDFX_Q_OFFSET, GR_PARAM_ENABLE );
 439    fxMesa->Glide.grVertexLayout( GR_PARAM_PARGB, TDFX_ARGB_OFFSET, GR_PARAM_ENABLE );
 440    fxMesa->Glide.grVertexLayout( GR_PARAM_ST0, TDFX_ST0_OFFSET, GR_PARAM_ENABLE );
 441    fxMesa->Glide.grVertexLayout( GR_PARAM_Q0, TDFX_Q0_OFFSET, GR_PARAM_ENABLE );
 442    fxMesa->Glide.grVertexLayout( GR_PARAM_ST1, TDFX_ST1_OFFSET, GR_PARAM_ENABLE );
 443    fxMesa->Glide.grVertexLayout( GR_PARAM_Q1, TDFX_Q1_OFFSET, GR_PARAM_ENABLE );
 444    fxMesa->Glide.grGlideGetVertexLayout( fxMesa->layout[TDFX_LAYOUT_PROJ2] );
 445
 446    UNLOCK_HARDWARE( fxMesa );
 447
 448    return GL_TRUE;
 449 }
 450
 451
 452 /*
 453  * Initialize the state in an tdfxContextPtr struct.
 454  */
 455 static GLboolean
 456 tdfxInitContext( __DRIdrawablePrivate *driDrawPriv, tdfxContextPtr fxMesa )
 457 {
 458    /* KW: Would be nice to make one of these a member of the other.
 459     */
 460    FxI32 result[2];
 461    const char *gext;
 462
 463    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 464       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 465    }
 466
 467 #if DEBUG_LOCKING
 468    fprintf(stderr, "Debug locking enabled\n");
 469 #endif
 470
 471    if ( fxMesa->Glide.Initialized )
 472       return GL_TRUE;
 473
 474    fxMesa->width = driDrawPriv->w;
 475    fxMesa->height = driDrawPriv->h;
 476
 477    /* We have to use a light lock here, because we can't do any glide
 478     * operations yet. No use of FX_* functions in this function.
 479     */
 480    DRM_LIGHT_LOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 481
 482    fxMesa->Glide.grGlideInit();
 483    fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
 484
 485    fxMesa->Glide.Context = fxMesa->Glide.grSstWinOpen( (FxU32) -1,
 486                                          GR_RESOLUTION_NONE,
 487                                          GR_REFRESH_NONE,
 488                                          fxMesa->Glide.ColorFormat,
 489                                          fxMesa->Glide.Origin,
 490                                          2, 1 );
 491
 492    fxMesa->Glide.grDRIResetSAREA();
 493
 494    DRM_UNLOCK( fxMesa->driFd, fxMesa->driHwLock, fxMesa->hHWContext );
 495
 496    if ( !fxMesa->Glide.Context )
 497       return GL_FALSE;
 498
 499
 500    /* Perform the Glide-dependant part of the context initialization.
 501     */
 502    FX_grColorMaskv( fxMesa->glCtx, true4 );
 503
 504    tdfxTMInit( fxMesa );
 505
 506    LOCK_HARDWARE( fxMesa );
 507
 508    /* JJJ - COMMAND_TRANSPORT, PALETTE6666 */
 509    gext = fxMesa->Glide.grGetString( GR_EXTENSION );
 510    fxMesa->Glide.HaveCombineExt = strstr(gext, "COMBINE") && !getenv("MESA_FX_IGNORE_CMBEXT");
 511    fxMesa->Glide.HaveCommandTransportExt = GL_FALSE;
 512    fxMesa->Glide.HaveFogCoordExt = GL_TRUE;
 513    fxMesa->Glide.HavePixelExt = strstr(gext, "PIXEXT") && !getenv("MESA_FX_IGNORE_PIXEXT");
 514    fxMesa->Glide.HaveTextureBufferExt = GL_TRUE;
 515    fxMesa->Glide.HaveTexFmtExt = strstr(gext, "TEXFMT") && !getenv("MESA_FX_IGNORE_TEXFMT");
 516    fxMesa->Glide.HaveTexUMAExt = strstr(gext, "TEXUMA") && !getenv("MESA_FX_IGNORE_TEXUMA");
 517    fxMesa->Glide.HaveMirrorExt = strstr(gext, "TEXMIRROR") && !getenv("MESA_FX_IGNORE_MIREXT");
 518    fxMesa->Glide.HaveTexus2 = GL_FALSE;
 519
 520    if ( fxMesa->glCtx->Visual.depthBits > 0 ) {
 521       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
 522    } else {
 523       fxMesa->Glide.grDepthBufferMode(GR_DEPTHBUFFER_DISABLE);
 524    }
 525
 526    fxMesa->Glide.grLfbWriteColorFormat( GR_COLORFORMAT_ABGR );
 527
 528    fxMesa->Glide.grGet( GR_TEXTURE_ALIGN, sizeof(FxI32), result );
 529    fxMesa->Glide.TextureAlign = result[0];
 530
 531    fxMesa->Glide.State = NULL;
 532    fxMesa->Glide.grGet( GR_GLIDE_STATE_SIZE, sizeof(FxI32), result );
 533    fxMesa->Glide.State = MALLOC( result[0] );
 534
 535    fxMesa->Fog.Table = NULL;
 536    fxMesa->Glide.grGet( GR_FOG_TABLE_ENTRIES, sizeof(FxI32), result );
 537    fxMesa->Fog.Table = MALLOC( result[0] * sizeof(GrFog_t) );
 538
 539    UNLOCK_HARDWARE( fxMesa );
 540
 541    if ( !fxMesa->Glide.State || !fxMesa->Fog.Table ) {
 542       if ( fxMesa->Glide.State )
 543          FREE( fxMesa->Glide.State );
 544       if ( fxMesa->Fog.Table )
 545          FREE( fxMesa->Fog.Table );
 546       return GL_FALSE;
 547    }
 548
 549    if ( !tdfxInitVertexFormats( fxMesa ) ) {
 550       return GL_FALSE;
 551    }
 552
 553    LOCK_HARDWARE( fxMesa );
 554
 555    fxMesa->Glide.grGlideGetState( fxMesa->Glide.State );
 556
 557    if ( getenv( "FX_GLIDE_INFO" ) ) {
 558       printf( "GR_RENDERER  = %s\n", (char *) fxMesa->Glide.grGetString( GR_RENDERER ) );
 559       printf( "GR_VERSION   = %s\n", (char *) fxMesa->Glide.grGetString( GR_VERSION ) );
 560       printf( "GR_VENDOR    = %s\n", (char *) fxMesa->Glide.grGetString( GR_VENDOR ) );
 561       printf( "GR_HARDWARE  = %s\n", (char *) fxMesa->Glide.grGetString( GR_HARDWARE ) );
 562       printf( "GR_EXTENSION = %s\n", (char *) gext );
 563    }
 564
 565    UNLOCK_HARDWARE( fxMesa );
 566
 567    fxMesa->numClipRects = 0;
 568    fxMesa->pClipRects = NULL;
 569    fxMesa->scissoredClipRects = GL_FALSE;
 570
 571    fxMesa->Glide.Initialized = GL_TRUE;
 572
 573    return GL_TRUE;
 574 }
 575
 576
 577 void
 578 tdfxDestroyContext( __DRIcontextPrivate *driContextPriv )
 579 {
 580    tdfxContextPtr fxMesa = (tdfxContextPtr) driContextPriv->driverPrivate;
 581
 582    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 583       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)fxMesa );
 584    }
 585
 586    if ( fxMesa ) {
 587       if (fxMesa->glCtx->Shared->RefCount == 1 && fxMesa->driDrawable) {
 588          /* This share group is about to go away, free our private
 589           * texture object data.
 590           */
 591          struct _mesa_HashTable *textures = fxMesa->glCtx->Shared->TexObjects;
 592          GLuint id;
 593          for (id = _mesa_HashFirstEntry(textures);
 594               id;
 595               id = _mesa_HashNextEntry(textures, id)) {
 596             struct gl_texture_object *tObj
 597                = _mesa_lookup_texture(fxMesa->glCtx, id);
 598             tdfxTMFreeTexture(fxMesa, tObj);
 599          }
 600       }
 601
 602       tdfxTMClose(fxMesa);  /* free texture memory */
 603
 604       _swsetup_DestroyContext( fxMesa->glCtx );
 605       _tnl_DestroyContext( fxMesa->glCtx );
 606       _vbo_DestroyContext( fxMesa->glCtx );
 607       _swrast_DestroyContext( fxMesa->glCtx );
 608
 609       tdfxFreeVB( fxMesa->glCtx );
 610
 611       /* Free Mesa context */
 612       fxMesa->glCtx->DriverCtx = NULL;
 613       _mesa_destroy_context(fxMesa->glCtx);
 614
 615       /* free the tdfx context */
 616       FREE( fxMesa );
 617    }
 618 }
 619
 620
 621 GLboolean
 622 tdfxUnbindContext( __DRIcontextPrivate *driContextPriv )
 623 {
 624    GET_CURRENT_CONTEXT(ctx);
 625    tdfxContextPtr fxMesa = TDFX_CONTEXT(ctx);
 626
 627    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 628       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 629    }
 630
 631    if ( driContextPriv && (tdfxContextPtr) driContextPriv == fxMesa ) {
 632       LOCK_HARDWARE(fxMesa);
 633       fxMesa->Glide.grGlideGetState(fxMesa->Glide.State);
 634       UNLOCK_HARDWARE(fxMesa);
 635    }
 636    return GL_TRUE;
 637 }
 638
 639
 640 GLboolean
 641 tdfxMakeCurrent( __DRIcontextPrivate *driContextPriv,
 642                  __DRIdrawablePrivate *driDrawPriv,
 643                  __DRIdrawablePrivate *driReadPriv )
 644 {
 645    if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
 646       fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driContextPriv );
 647    }
 648
 649    if ( driContextPriv ) {
 650       tdfxContextPtr newFx = (tdfxContextPtr) driContextPriv->driverPrivate;
 651       GLcontext *newCtx = newFx->glCtx;
 652       GET_CURRENT_CONTEXT(curCtx);
 653
 654       if ((newFx->driDrawable != driDrawPriv)
 655           || (newFx->driReadable != driReadPriv)) {
 656          newFx->driDrawable = driDrawPriv;
 657          newFx->driReadable = driReadPriv;
 658          newFx->dirty = ~0;
 659       }
 660       else {
 661          if (curCtx == newCtx) {
 662             /* same drawable, same context -> no-op */
 663             /* Need to call _mesa_make_current2() in order to make sure API
 664              * dispatch is set correctly.
 665              */
 666             _mesa_make_current( newCtx,
 667                                 (GLframebuffer *) driDrawPriv->driverPrivate,
 668                                 (GLframebuffer *) driReadPriv->driverPrivate );
 669             return GL_TRUE;
 670          }
 671          /* [dBorca] tunnel2 requires this */
 672          newFx->dirty = ~0;
 673       }
 674
 675       driUpdateFramebufferSize(newCtx, driDrawPriv);
 676       if (driDrawPriv != driReadPriv) {
 677          driUpdateFramebufferSize(newCtx, driReadPriv);
 678       }
 679
 680       if ( !newFx->Glide.Initialized ) {
 681          if ( !tdfxInitContext( driDrawPriv, newFx ) )
 682             return GL_FALSE;
 683
 684          LOCK_HARDWARE( newFx );
 685
 686          /* FIXME: Force loading of window information */
 687          newFx->width = 0;
 688          tdfxUpdateClipping(newCtx);
 689          tdfxUploadClipping(newFx);
 690
 691          UNLOCK_HARDWARE( newFx );
 692       } else {
 693          LOCK_HARDWARE( newFx );
 694
 695          newFx->Glide.grSstSelect( newFx->Glide.Board );
 696          newFx->Glide.grGlideSetState( newFx->Glide.State );
 697
 698          tdfxUpdateClipping(newCtx);
 699          tdfxUploadClipping(newFx);
 700
 701          UNLOCK_HARDWARE( newFx );
 702       }
 703
 704       _mesa_make_current( newCtx,
 705                           (GLframebuffer *) driDrawPriv->driverPrivate,
 706                           (GLframebuffer *) driReadPriv->driverPrivate );
 707    } else {
 708       _mesa_make_current( NULL, NULL, NULL );
 709    }
 710
 711    return GL_TRUE;
 712 }
 713
 714
 715 /*
 716  * Enable this to trace calls to various Glide functions.
 717  */
 718 /*#define DEBUG_TRAP*/
 719 #ifdef DEBUG_TRAP
 720 static void (*real_grDrawTriangle)( const void *a, const void *b, const void *c );
 721 static void (*real_grDrawPoint)( const void *a );
 722 static void (*real_grDrawVertexArray)(FxU32 mode, FxU32 Count, void *pointers);
 723 static void (*real_grDrawVertexArrayContiguous)(FxU32 mode, FxU32 Count,
 724                                        void *pointers, FxU32 stride);
 725 static void (*real_grClipWindow)( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy );
 726
 727 static void (*real_grVertexLayout)(FxU32 param, FxI32 offset, FxU32 mode);
 728 static void (*real_grGlideGetVertexLayout)( void *layout );
 729 static void (*real_grGlideSetVertexLayout)( const void *layout );
 730
 731 static void (*real_grTexDownloadMipMapLevel)( GrChipID_t        tmu,
 732                                      FxU32             startAddress,
 733                                      GrLOD_t           thisLod,
 734                                      GrLOD_t           largeLod,
 735                                      GrAspectRatio_t   aspectRatio,
 736                                      GrTextureFormat_t format,
 737                                      FxU32             evenOdd,
 738                                               void              *data );
 739
 740
 741 static void debug_grDrawTriangle( const void *a, const void *b, const void *c )
 742 {
 743    printf("%s\n", __FUNCTION__);
 744    (*real_grDrawTriangle)(a, b, c);
 745 }
 746
 747 static void debug_grDrawPoint( const void *a )
 748 {
 749    const float *f = (const float *) a;
 750    printf("%s %g %g\n", __FUNCTION__, f[0], f[1]);
 751    (*real_grDrawPoint)(a);
 752 }
 753
 754 static void debug_grDrawVertexArray(FxU32 mode, FxU32 Count, void *pointers)
 755 {
 756    printf("%s count=%d\n", __FUNCTION__, (int) Count);
 757    (*real_grDrawVertexArray)(mode, Count, pointers);
 758 }
 759
 760 static void debug_grDrawVertexArrayContiguous(FxU32 mode, FxU32 Count,
 761                                        void *pointers, FxU32 stride)
 762 {
 763    printf("%s mode=0x%x count=%d\n", __FUNCTION__, (int) mode, (int) Count);
 764    (*real_grDrawVertexArrayContiguous)(mode, Count, pointers, stride);
 765 }
 766
 767 static void debug_grClipWindow( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy )
 768 {
 769    printf("%s %d,%d .. %d,%d\n", __FUNCTION__,
 770           (int) minx, (int) miny, (int) maxx, (int) maxy);
 771    (*real_grClipWindow)(minx, miny, maxx, maxy);
 772 }
 773
 774 static void debug_grVertexLayout(FxU32 param, FxI32 offset, FxU32 mode)
 775 {
 776    (*real_grVertexLayout)(param, offset, mode);
 777 }
 778
 779 static void debug_grGlideGetVertexLayout( void *layout )
 780 {
 781    (*real_grGlideGetVertexLayout)(layout);
 782 }
 783
 784 static void debug_grGlideSetVertexLayout( const void *layout )
 785 {
 786    (*real_grGlideSetVertexLayout)(layout);
 787 }
 788
 789 static void debug_grTexDownloadMipMapLevel( GrChipID_t        tmu,
 790                                      FxU32             startAddress,
 791                                      GrLOD_t           thisLod,
 792                                      GrLOD_t           largeLod,
 793                                      GrAspectRatio_t   aspectRatio,
 794                                      GrTextureFormat_t format,
 795                                      FxU32             evenOdd,
 796                                      void              *data )
 797 {
 798    (*real_grTexDownloadMipMapLevel)(tmu, startAddress, thisLod, largeLod,
 799                                     aspectRatio, format, evenOdd, data);
 800 }
 801
 802 #endif
 803
 804
 805 /*
 806  * Examine the context's deviceID to determine what kind of 3dfx hardware
 807  * is installed.  dlopen() the appropriate Glide library and initialize
 808  * this context's Glide function pointers.
 809  * Return:  true/false = success/failure
 810  */
 811 GLboolean tdfxInitGlide(tdfxContextPtr tmesa)
 812 {
 813    static const char *defaultGlide = "libglide3.so";
 814    const char *libName;
 815    void *libHandle;
 816
 817    /*
 818     * XXX this code which selects a Glide library filename given the
 819     * deviceID may need to be cleaned up a bit.
 820     * Non-Linux systems may have different filenames, for example.
 821     */
 822    switch (tmesa->fxScreen->deviceID) {
 823    case PCI_CHIP_BANSHEE:
 824    case PCI_CHIP_VOODOO3:
 825       libName = "libglide3-v3.so";
 826       break;
 827    case PCI_CHIP_VOODOO5:   /* same as PCI_CHIP_VOODOO4 */
 828       libName = "libglide3-v5.so";
 829       break;
 830    default:
 831       {
 832          __driUtilMessage("unrecognized 3dfx deviceID: 0x%x",
 833                  tmesa->fxScreen->deviceID);
 834       }
 835       return GL_FALSE;
 836    }
 837
 838    libHandle = dlopen(libName, RTLD_NOW);
 839    if (!libHandle) {
 840       /* The device-specific Glide library filename didn't work, try the
 841        * old, generic libglide3.so library.
 842        */
 843       libHandle = dlopen(defaultGlide, RTLD_NOW);
 844       if (!libHandle) {
 845          __driUtilMessage(
 846             "can't find Glide library, dlopen(%s) and dlopen(%s) both failed.",
 847             libName, defaultGlide);
 848          __driUtilMessage("dlerror() message: %s", dlerror());
 849          return GL_FALSE;
 850       }
 851       libName = defaultGlide;
 852    }
 853
 854    {
 855       const char *env = getenv("LIBGL_DEBUG");
 856       if (env && strstr(env, "verbose")) {
 857          fprintf(stderr, "libGL: using Glide library %s\n", libName);
 858       }
 859    }
 860
 861 #define GET_FUNCTION(PTR, NAME)                                         \
 862    tmesa->Glide.PTR = dlsym(libHandle, NAME);                           \
 863    if (!tmesa->Glide.PTR) {                                             \
 864       __driUtilMessage("couldn't find Glide function %s in %s.",        \
 865               NAME, libName);                                           \
 866    }
 867
 868    GET_FUNCTION(grDrawPoint, "grDrawPoint");
 869    GET_FUNCTION(grDrawLine, "grDrawLine");
 870    GET_FUNCTION(grDrawTriangle, "grDrawTriangle");
 871    GET_FUNCTION(grVertexLayout, "grVertexLayout");
 872    GET_FUNCTION(grDrawVertexArray, "grDrawVertexArray");
 873    GET_FUNCTION(grDrawVertexArrayContiguous, "grDrawVertexArrayContiguous");
 874    GET_FUNCTION(grBufferClear, "grBufferClear");
 875    /*GET_FUNCTION(grBufferSwap, "grBufferSwap");*/
 876    GET_FUNCTION(grRenderBuffer, "grRenderBuffer");
 877    GET_FUNCTION(grErrorSetCallback, "grErrorSetCallback");
 878    GET_FUNCTION(grFinish, "grFinish");
 879    GET_FUNCTION(grFlush, "grFlush");
 880    GET_FUNCTION(grSstWinOpen, "grSstWinOpen");
 881    GET_FUNCTION(grSstWinClose, "grSstWinClose");
 882 #if 0
 883    /* Not in V3 lib, and not used anyway. */
 884    GET_FUNCTION(grSetNumPendingBuffers, "grSetNumPendingBuffers");
 885 #endif
 886    GET_FUNCTION(grSelectContext, "grSelectContext");
 887    GET_FUNCTION(grSstOrigin, "grSstOrigin");
 888    GET_FUNCTION(grSstSelect, "grSstSelect");
 889    GET_FUNCTION(grAlphaBlendFunction, "grAlphaBlendFunction");
 890    GET_FUNCTION(grAlphaCombine, "grAlphaCombine");
 891    GET_FUNCTION(grAlphaControlsITRGBLighting, "grAlphaControlsITRGBLighting");
 892    GET_FUNCTION(grAlphaTestFunction, "grAlphaTestFunction");
 893    GET_FUNCTION(grAlphaTestReferenceValue, "grAlphaTestReferenceValue");
 894    GET_FUNCTION(grChromakeyMode, "grChromakeyMode");
 895    GET_FUNCTION(grChromakeyValue, "grChromakeyValue");
 896    GET_FUNCTION(grClipWindow, "grClipWindow");
 897    GET_FUNCTION(grColorCombine, "grColorCombine");
 898    GET_FUNCTION(grColorMask, "grColorMask");
 899    GET_FUNCTION(grCullMode, "grCullMode");
 900    GET_FUNCTION(grConstantColorValue, "grConstantColorValue");
 901    GET_FUNCTION(grDepthBiasLevel, "grDepthBiasLevel");
 902    GET_FUNCTION(grDepthBufferFunction, "grDepthBufferFunction");
 903    GET_FUNCTION(grDepthBufferMode, "grDepthBufferMode");
 904    GET_FUNCTION(grDepthMask, "grDepthMask");
 905    GET_FUNCTION(grDisableAllEffects, "grDisableAllEffects");
 906    GET_FUNCTION(grDitherMode, "grDitherMode");
 907    GET_FUNCTION(grFogColorValue, "grFogColorValue");
 908    GET_FUNCTION(grFogMode, "grFogMode");
 909    GET_FUNCTION(grFogTable, "grFogTable");
 910    GET_FUNCTION(grLoadGammaTable, "grLoadGammaTable");
 911    GET_FUNCTION(grSplash, "grSplash");
 912    GET_FUNCTION(grGet, "grGet");
 913    GET_FUNCTION(grGetString, "grGetString");
 914    GET_FUNCTION(grQueryResolutions, "grQueryResolutions");
 915    GET_FUNCTION(grReset, "grReset");
 916    GET_FUNCTION(grGetProcAddress, "grGetProcAddress");
 917    GET_FUNCTION(grEnable, "grEnable");
 918    GET_FUNCTION(grDisable, "grDisable");
 919    GET_FUNCTION(grCoordinateSpace, "grCoordinateSpace");
 920    GET_FUNCTION(grDepthRange, "grDepthRange");
 921    GET_FUNCTION(grStippleMode, "grStippleMode");
 922    GET_FUNCTION(grStipplePattern, "grStipplePattern");
 923    GET_FUNCTION(grViewport, "grViewport");
 924    GET_FUNCTION(grTexCalcMemRequired, "grTexCalcMemRequired");
 925    GET_FUNCTION(grTexTextureMemRequired, "grTexTextureMemRequired");
 926    GET_FUNCTION(grTexMinAddress, "grTexMinAddress");
 927    GET_FUNCTION(grTexMaxAddress, "grTexMaxAddress");
 928    GET_FUNCTION(grTexNCCTable, "grTexNCCTable");
 929    GET_FUNCTION(grTexSource, "grTexSource");
 930    GET_FUNCTION(grTexClampMode, "grTexClampMode");
 931    GET_FUNCTION(grTexCombine, "grTexCombine");
 932    GET_FUNCTION(grTexDetailControl, "grTexDetailControl");
 933    GET_FUNCTION(grTexFilterMode, "grTexFilterMode");
 934    GET_FUNCTION(grTexLodBiasValue, "grTexLodBiasValue");
 935    GET_FUNCTION(grTexDownloadMipMap, "grTexDownloadMipMap");
 936    GET_FUNCTION(grTexDownloadMipMapLevel, "grTexDownloadMipMapLevel");
 937    GET_FUNCTION(grTexDownloadMipMapLevelPartial, "grTexDownloadMipMapLevelPartial");
 938    GET_FUNCTION(grTexDownloadTable, "grTexDownloadTable");
 939    GET_FUNCTION(grTexDownloadTablePartial, "grTexDownloadTablePartial");
 940    GET_FUNCTION(grTexMipMapMode, "grTexMipMapMode");
 941    GET_FUNCTION(grTexMultibase, "grTexMultibase");
 942    GET_FUNCTION(grTexMultibaseAddress, "grTexMultibaseAddress");
 943    GET_FUNCTION(grLfbLock, "grLfbLock");
 944    GET_FUNCTION(grLfbUnlock, "grLfbUnlock");
 945    GET_FUNCTION(grLfbConstantAlpha, "grLfbConstantAlpha");
 946    GET_FUNCTION(grLfbConstantDepth, "grLfbConstantDepth");
 947    GET_FUNCTION(grLfbWriteColorSwizzle, "grLfbWriteColorSwizzle");
 948    GET_FUNCTION(grLfbWriteColorFormat, "grLfbWriteColorFormat");
 949    GET_FUNCTION(grLfbWriteRegion, "grLfbWriteRegion");
 950    GET_FUNCTION(grLfbReadRegion, "grLfbReadRegion");
 951    GET_FUNCTION(grGlideInit, "grGlideInit");
 952    GET_FUNCTION(grGlideShutdown, "grGlideShutdown");
 953    GET_FUNCTION(grGlideGetState, "grGlideGetState");
 954    GET_FUNCTION(grGlideSetState, "grGlideSetState");
 955    GET_FUNCTION(grGlideGetVertexLayout, "grGlideGetVertexLayout");
 956    GET_FUNCTION(grGlideSetVertexLayout, "grGlideSetVertexLayout");
 957
 958    /* Glide utility functions */
 959    GET_FUNCTION(guFogGenerateExp, "guFogGenerateExp");
 960    GET_FUNCTION(guFogGenerateExp2, "guFogGenerateExp2");
 961    GET_FUNCTION(guFogGenerateLinear, "guFogGenerateLinear");
 962
 963    /* DRI functions */
 964    GET_FUNCTION(grDRIOpen, "grDRIOpen");
 965    GET_FUNCTION(grDRIPosition, "grDRIPosition");
 966    /*GET_FUNCTION(grDRILostContext, "grDRILostContext");*/
 967    GET_FUNCTION(grDRIImportFifo, "grDRIImportFifo");
 968    GET_FUNCTION(grDRIInvalidateAll, "grDRIInvalidateAll");
 969    GET_FUNCTION(grDRIResetSAREA, "grDRIResetSAREA");
 970    GET_FUNCTION(grDRIBufferSwap, "grDRIBufferSwap");
 971
 972    /*
 973     * Extension functions:
 974     * Just use dlysm() because we want a NULL pointer if the function is
 975     * not found.
 976     */
 977    /* PIXEXT extension */
 978    tmesa->Glide.grStencilFunc = dlsym(libHandle, "grStencilFunc");
 979    tmesa->Glide.grStencilMask = dlsym(libHandle, "grStencilMask");
 980    tmesa->Glide.grStencilOp = dlsym(libHandle, "grStencilOp");
 981    tmesa->Glide.grBufferClearExt = dlsym(libHandle, "grBufferClearExt");
 982    tmesa->Glide.grColorMaskExt = dlsym(libHandle, "grColorMaskExt");
 983    /* COMBINE extension */
 984    tmesa->Glide.grColorCombineExt = dlsym(libHandle, "grColorCombineExt");
 985    tmesa->Glide.grTexColorCombineExt = dlsym(libHandle, "grTexColorCombineExt");
 986    tmesa->Glide.grAlphaCombineExt = dlsym(libHandle, "grAlphaCombineExt");
 987    tmesa->Glide.grTexAlphaCombineExt = dlsym(libHandle, "grTexAlphaCombineExt");
 988    tmesa->Glide.grAlphaBlendFunctionExt = dlsym(libHandle, "grAlphaBlendFunctionExt");
 989    tmesa->Glide.grConstantColorValueExt = dlsym(libHandle, "grConstantColorValueExt");
 990    /* Texus 2 */
 991    tmesa->Glide.txImgQuantize = dlsym(libHandle, "txImgQuantize");
 992    tmesa->Glide.txImgDequantizeFXT1 = dlsym(libHandle, "_txImgDequantizeFXT1");
 993    tmesa->Glide.txErrorSetCallback = dlsym(libHandle, "txErrorSetCallback");
 994
 995 #ifdef DEBUG_TRAP
 996    /* wrap the drawing functions so we can trap them */
 997    real_grDrawTriangle = tmesa->Glide.grDrawTriangle;
 998    tmesa->Glide.grDrawTriangle = debug_grDrawTriangle;
 999
1000    real_grDrawPoint = tmesa->Glide.grDrawPoint;
1001    tmesa->Glide.grDrawPoint = debug_grDrawPoint;
1002
1003    real_grDrawVertexArray = tmesa->Glide.grDrawVertexArray;
1004    tmesa->Glide.grDrawVertexArray = debug_grDrawVertexArray;
1005
1006    real_grDrawVertexArrayContiguous = tmesa->Glide.grDrawVertexArrayContiguous;
1007    tmesa->Glide.grDrawVertexArrayContiguous = debug_grDrawVertexArrayContiguous;
1008
1009    real_grClipWindow = tmesa->Glide.grClipWindow;
1010    tmesa->Glide.grClipWindow = debug_grClipWindow;
1011
1012    real_grVertexLayout = tmesa->Glide.grVertexLayout;
1013    tmesa->Glide.grVertexLayout = debug_grVertexLayout;
1014
1015    real_grGlideGetVertexLayout = tmesa->Glide.grGlideGetVertexLayout;
1016    tmesa->Glide.grGlideGetVertexLayout = debug_grGlideGetVertexLayout;
1017
1018    real_grGlideSetVertexLayout = tmesa->Glide.grGlideSetVertexLayout;
1019    tmesa->Glide.grGlideSetVertexLayout = debug_grGlideSetVertexLayout;
1020
1021    real_grTexDownloadMipMapLevel = tmesa->Glide.grTexDownloadMipMapLevel;
1022    tmesa->Glide.grTexDownloadMipMapLevel = debug_grTexDownloadMipMapLevel;
1023
1024 #endif
1025    return GL_TRUE;
1026 }