src/mesa/drivers/dri/gamma/gamma_lock.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/gamma/gamma_lock.c,v 1.4 2002/11/05 17:46:07 tsi Exp $ */
   2
   3 #include "gamma_context.h"
   4 #include "gamma_lock.h"
   5
   6 #ifdef DEBUG_LOCKING
   7 char *prevLockFile = NULL;
   8 int prevLockLine = 0;
   9 #endif
  10
  11
  12 /* Update the hardware state.  This is called if another context has
  13  * grabbed the hardware lock, which includes the X server.  This
  14  * function also updates the driver's window state after the X server
  15  * moves, resizes or restacks a window -- the change will be reflected
  16  * in the drawable position and clip rects.  Since the X server grabs
  17  * the hardware lock when it changes the window state, this routine will
  18  * automatically be called after such a change.
  19  */
  20 void gammaGetLock( gammaContextPtr gmesa, GLuint flags )
  21 {
  22    __DRIdrawablePrivate *dPriv = gmesa->driDrawable;
  23    __DRIscreenPrivate *sPriv = gmesa->driScreen;
  24
  25    drmGetLock( gmesa->driFd, gmesa->hHWContext, flags );
  26
  27    /* The window might have moved, so we might need to get new clip
  28     * rects.
  29     *
  30     * NOTE: This releases and regrabs the hw lock to allow the X server
  31     * to respond to the DRI protocol request for new drawable info.
  32     * Since the hardware state depends on having the latest drawable
  33     * clip rects, all state checking must be done _after_ this call.
  34     */
  35    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
  36
  37    if ( gmesa->lastStamp != dPriv->lastStamp ) {
  38       gmesa->lastStamp = dPriv->lastStamp;
  39       gmesa->new_state |= GAMMA_NEW_WINDOW | GAMMA_NEW_CLIP;
  40    }
  41
  42    gmesa->numClipRects = dPriv->numClipRects;
  43    gmesa->pClipRects = dPriv->pClipRects;
  44
  45 #if 0
  46    gmesa->dirty = ~0;
  47
  48    if ( sarea->ctxOwner != gmesa->hHWContext ) {
  49       sarea->ctxOwner = gmesa->hHWContext;
  50       gmesa->dirty = GAMMA_UPLOAD_ALL;
  51    }
  52
  53    for ( i = 0 ; i < gmesa->lastTexHeap ; i++ ) {
  54       if ( sarea->texAge[i] != gmesa->lastTexAge[i] ) {
  55          gammaAgeTextures( gmesa, i );
  56       }
  57    }
  58 #endif
  59 }