src/mesa/drivers/dri/r128/r128_lock.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/r128/r128_lock.c,v 1.5 2002/10/30 12:51:38 alanh Exp $ */
   2 /**************************************************************************
   3
   4 Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
   5                                                Cedar Park, Texas.
   6 All Rights Reserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining a
   9 copy of this software and associated documentation files (the "Software"),
  10 to deal in the Software without restriction, including without limitation
  11 on the rights to use, copy, modify, merge, publish, distribute, sub
  12 license, and/or sell copies of the Software, and to permit persons to whom
  13 the Software is furnished to do so, subject to the following conditions:
  14
  15 The above copyright notice and this permission notice (including the next
  16 paragraph) shall be included in all copies or substantial portions of the
  17 Software.
  18
  19 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  22 ATI, PRECISION INSIGHT AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  23 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  24 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  25 USE OR OTHER DEALINGS IN THE SOFTWARE.
  26
  27 **************************************************************************/
  28
  29 /*
  30  * Authors:
  31  *   Gareth Hughes <gareth@valinux.com>
  32  *
  33  */
  34
  35 #include "r128_context.h"
  36 #include "r128_lock.h"
  37 #include "r128_tex.h"
  38 #include "r128_state.h"
  39
  40 #include "drirenderbuffer.h"
  41
  42
  43 #if DEBUG_LOCKING
  44 char *prevLockFile = NULL;
  45 int prevLockLine = 0;
  46 #endif
  47
  48
  49 /* Turn on/off page flipping according to the flags in the sarea:
  50  */
  51 static void
  52 r128UpdatePageFlipping( r128ContextPtr rmesa )
  53 {
  54    rmesa->doPageFlip = rmesa->sarea->pfAllowPageFlip;
  55    if (rmesa->glCtx->WinSysDrawBuffer) {
  56       driFlipRenderbuffers(rmesa->glCtx->WinSysDrawBuffer,
  57                            rmesa->sarea->pfCurrentPage);
  58    }
  59    rmesa->new_state |= R128_NEW_WINDOW;
  60 }
  61
  62 /* Update the hardware state.  This is called if another context has
  63  * grabbed the hardware lock, which includes the X server.  This
  64  * function also updates the driver's window state after the X server
  65  * moves, resizes or restacks a window -- the change will be reflected
  66  * in the drawable position and clip rects.  Since the X server grabs
  67  * the hardware lock when it changes the window state, this routine will
  68  * automatically be called after such a change.
  69  */
  70 void r128GetLock( r128ContextPtr rmesa, GLuint flags )
  71 {
  72    __DRIdrawablePrivate *dPriv = rmesa->driDrawable;
  73    __DRIscreenPrivate *sPriv = rmesa->driScreen;
  74    drm_r128_sarea_t *sarea = rmesa->sarea;
  75    int i;
  76
  77    drmGetLock( rmesa->driFd, rmesa->hHWContext, flags );
  78
  79    /* The window might have moved, so we might need to get new clip
  80     * rects.
  81     *
  82     * NOTE: This releases and regrabs the hw lock to allow the X server
  83     * to respond to the DRI protocol request for new drawable info.
  84     * Since the hardware state depends on having the latest drawable
  85     * clip rects, all state checking must be done _after_ this call.
  86     */
  87    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
  88
  89    if ( rmesa->lastStamp != dPriv->lastStamp ) {
  90       r128UpdatePageFlipping( rmesa );
  91       driUpdateFramebufferSize(rmesa->glCtx, dPriv);
  92       rmesa->lastStamp = dPriv->lastStamp;
  93       rmesa->new_state |= R128_NEW_CLIP;
  94       RENDERINPUTS_ONES( rmesa->tnl_state_bitset );
  95    }
  96
  97    rmesa->dirty |= R128_UPLOAD_CONTEXT | R128_UPLOAD_CLIPRECTS;
  98
  99    rmesa->numClipRects = dPriv->numClipRects;
 100    rmesa->pClipRects = dPriv->pClipRects;
 101
 102    if ( sarea->ctx_owner != rmesa->hHWContext ) {
 103       sarea->ctx_owner = rmesa->hHWContext;
 104       rmesa->dirty = R128_UPLOAD_ALL;
 105    }
 106
 107    for ( i = 0 ; i < rmesa->nr_heaps ; i++ ) {
 108       DRI_AGE_TEXTURES( rmesa->texture_heaps[i] );
 109    }
 110 }