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
  27 /*
  28  * Original rewrite:
  29  *      Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
  30  *
  31  * Authors:
  32  *      Gareth Hughes <gareth@valinux.com>
  33  *
  34  */
  35
  36 #include "tdfx_context.h"
  37 #include "tdfx_lock.h"
  38 #include "tdfx_state.h"
  39 #include "tdfx_render.h"
  40 #include "tdfx_texman.h"
  41 #include "tdfx_tris.h"
  42
  43 #include "drirenderbuffer.h"
  44
  45
  46 void tdfxGetLock( tdfxContextPtr fxMesa )
  47 {
  48     __DRIcontextPrivate *cPriv = fxMesa->driContext;
  49     __DRIdrawablePrivate *const drawable = cPriv->driDrawablePriv;
  50     __DRIdrawablePrivate *const readable = cPriv->driReadablePriv;
  51     __DRIscreenPrivate *sPriv = drawable->driScreenPriv;
  52     TDFXSAREAPriv *saPriv = (TDFXSAREAPriv *) (((char *) sPriv->pSAREA) +
  53                                         fxMesa->fxScreen->sarea_priv_offset);
  54     unsigned int stamp = drawable->lastStamp;
  55
  56     drmGetLock( fxMesa->driFd, fxMesa->hHWContext, 0 );
  57
  58     /* This macro will update drawable's cliprects if needed */
  59     DRI_VALIDATE_DRAWABLE_INFO(sPriv, drawable);
  60     if (drawable != readable) {
  61         DRI_VALIDATE_DRAWABLE_INFO(sPriv, readable);
  62     }
  63
  64     if ( saPriv->fifoOwner != fxMesa->hHWContext ) {
  65         fxMesa->Glide.grDRIImportFifo( saPriv->fifoPtr, saPriv->fifoRead );
  66     }
  67
  68     if ( saPriv->ctxOwner != fxMesa->hHWContext ) {
  69         /* This sequence looks a little odd. Glide mirrors the state, and
  70          * when you get the state you are forcing the mirror to be up to
  71          * date, and then getting a copy from the mirror. You can then force
  72          * that state onto the hardware when you set the state.
  73          */
  74         void *state;
  75         FxI32 stateSize;
  76         fxMesa->Glide.grGet(GR_GLIDE_STATE_SIZE, 4, &stateSize);
  77         state = malloc(stateSize);
  78         fxMesa->Glide.grGlideGetState( state );
  79         fxMesa->Glide.grGlideSetState( state );
  80         free( state );
  81     }
  82
  83 #if 0
  84     if ( saPriv->texOwner != fxMesa->hHWContext ) {
  85         tdfxTMRestoreTextures_NoLock( fxMesa );
  86     }
  87 #endif
  88
  89     if ((*drawable->pStamp != stamp)
  90         || (saPriv->ctxOwner != fxMesa->hHWContext)) {
  91        driUpdateFramebufferSize(fxMesa->glCtx, drawable);
  92        if (drawable != readable) {
  93            driUpdateFramebufferSize(fxMesa->glCtx, readable);
  94        }
  95
  96        tdfxUpdateClipping(fxMesa->glCtx);
  97        tdfxUploadClipping(fxMesa);
  98     }
  99
 100     DEBUG_LOCK();
 101 }