src/mesa/drivers/dri/tdfx/tdfx_lock.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_lock.c,v 1.5 2002/12/16 16:19:00 dawes 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  *
  35  */
  36
  37 #include "tdfx_context.h"
  38 #include "tdfx_lock.h"
  39 #include "tdfx_state.h"
  40 #include "tdfx_render.h"
  41 #include "tdfx_texman.h"
  42 #include "tdfx_tris.h"
  43
  44
  45 void tdfxGetLock( tdfxContextPtr fxMesa )
  46 {
  47     __DRIcontextPrivate *cPriv = fxMesa->driContext;
  48     __DRIdrawablePrivate *dPriv = cPriv->driDrawablePriv;
  49     __DRIscreenPrivate *sPriv = dPriv->driScreenPriv;
  50     TDFXSAREAPriv *saPriv = (TDFXSAREAPriv *) (((char *) sPriv->pSAREA) +
  51                                         fxMesa->fxScreen->sarea_priv_offset);
  52     unsigned int stamp = dPriv->lastStamp;
  53
  54     drmGetLock( fxMesa->driFd, fxMesa->hHWContext, 0 );
  55
  56     /* This macro will update dPriv's cliprects if needed */
  57     DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
  58
  59     if ( saPriv->fifoOwner != fxMesa->hHWContext ) {
  60         fxMesa->Glide.grDRIImportFifo( saPriv->fifoPtr, saPriv->fifoRead );
  61     }
  62
  63     if ( saPriv->ctxOwner != fxMesa->hHWContext ) {
  64         /* This sequence looks a little odd. Glide mirrors the state, and
  65          * when you get the state you are forcing the mirror to be up to
  66          * date, and then getting a copy from the mirror. You can then force
  67          * that state onto the hardware when you set the state.
  68          */
  69         void *state;
  70         FxI32 stateSize;
  71         fxMesa->Glide.grGet(GR_GLIDE_STATE_SIZE, 4, &stateSize);
  72         state = malloc(stateSize);
  73         fxMesa->Glide.grGlideGetState( state );
  74         fxMesa->Glide.grGlideSetState( state );
  75         free( state );
  76     }
  77
  78 #if 0
  79     if ( saPriv->texOwner != fxMesa->hHWContext ) {
  80         tdfxTMRestoreTextures_NoLock( fxMesa );
  81     }
  82 #endif
  83
  84     if ( *dPriv->pStamp != stamp || saPriv->ctxOwner != fxMesa->hHWContext ) {
  85        tdfxUpdateClipping(fxMesa->glCtx);
  86        tdfxUploadClipping(fxMesa);
  87     }
  88
  89     DEBUG_LOCK();
  90 }