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 #include "drirenderbuffer.h"
   6
   7 #ifdef DEBUG_LOCKING
   8 char *prevLockFile = NULL;
   9 int prevLockLine = 0;
  10 #endif
  11
  12
  13 /* Update the hardware state.  This is called if another context has
  14  * grabbed the hardware lock, which includes the X server.  This
  15  * function also updates the driver's window state after the X server
  16  * moves, resizes or restacks a window -- the change will be reflected
  17  * in the drawable position and clip rects.  Since the X server grabs
  18  * the hardware lock when it changes the window state, this routine will
  19  * automatically be called after such a change.
  20  */
  21 void gammaGetLock( gammaContextPtr gmesa, GLuint flags )
  22 {
  23    __DRIdrawablePrivate *dPriv = gmesa->driDrawable;
  24    __DRIscreenPrivate *sPriv = gmesa->driScreen;
  25
  26    drmGetLock( gmesa->driFd, gmesa->hHWContext, flags );
  27
  28    /* The window might have moved, so we might need to get new clip
  29     * rects.
  30     *
  31     * NOTE: This releases and regrabs the hw lock to allow the X server
  32     * to respond to the DRI protocol request for new drawable info.
  33     * Since the hardware state depends on having the latest drawable
  34     * clip rects, all state checking must be done _after_ this call.
  35     */
  36    DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
  37
  38    if ( gmesa->lastStamp != dPriv->lastStamp ) {
  39       driUpdateFramebufferSize(gmesa->glCtx, dPriv);
  40       gmesa->lastStamp = dPriv->lastStamp;
  41       gmesa->new_state |= GAMMA_NEW_WINDOW | GAMMA_NEW_CLIP;
  42    }
  43
  44    gmesa->numClipRects = dPriv->numClipRects;
  45    gmesa->pClipRects = dPriv->pClipRects;
  46
  47 #if 0
  48    gmesa->dirty = ~0;
  49
  50    if ( sarea->ctxOwner != gmesa->hHWContext ) {
  51       sarea->ctxOwner = gmesa->hHWContext;
  52       gmesa->dirty = GAMMA_UPLOAD_ALL;
  53    }
  54
  55    for ( i = 0 ; i < gmesa->lastTexHeap ; i++ ) {
  56       if ( sarea->texAge[i] != gmesa->lastTexAge[i] ) {
  57          gammaAgeTextures( gmesa, i );
  58       }
  59    }
  60 #endif
  61 }