via: Responsiveness fix: Don't update video overlay when not strictly

    necessary

3 files changed, 23 insertions, 1 deletions

diff --git a/src/via_priv.h b/src/via_priv.h
index ac7c64d..2f0cf31 100644
--- a/src/via_priv.h
+++ b/src/via_priv.h
@@ -155,6 +155,8 @@ typedef struct  {
 /* For panning mode use */
     int panning_x;
     int panning_y;
+    int oldPanningX;
+    int oldPanningY;
 } swovRec, *swovPtr;
 
 #endif /* _VIA_PRIV_H_ */
diff --git a/src/via_swov.c b/src/via_swov.c
index 7bba031..530622c 100644
--- a/src/via_swov.c
+++ b/src/via_swov.c
@@ -1922,7 +1922,9 @@ VIAVidUpdateOverlay(ScrnInfoPtr pScrn, LPDDUPDATEOVERLAY pUpdate)
 
 
     panDX = pVia->swov.panning_x; 
-    panDY = pVia->swov.panning_y; 
+    panDY = pVia->swov.panning_y;
+    pVia->swov.oldPanningX = pVia->swov.panning_x;
+    pVia->swov.oldPanningY = pVia->swov.panning_y; 
 
     pUpdate->DstLeft   -= panDX;
     pUpdate->DstTop    -= panDY;
diff --git a/src/via_video.c b/src/via_video.c
index 0315df6..dfce4d6 100644
--- a/src/via_video.c
+++ b/src/via_video.c
@@ -502,6 +502,10 @@ void viaInitVideo(ScreenPtr pScreen)
 	ViaInitXVMC(pScreen);
 #endif
 	viaSetColorSpace(pVia,0,0,0,0,TRUE);
+	pVia->swov.panning_x = 0;
+	pVia->swov.panning_y = 0;
+	pVia->swov.oldPanningX = 0;
+	pVia->swov.oldPanningY = 0;
     }
 }
 
@@ -550,7 +554,21 @@ viaReputImage(ScrnInfoPtr pScrn,
     DDUPDATEOVERLAY      UpdateOverlay_Video;
     LPDDUPDATEOVERLAY    lpUpdateOverlay = &UpdateOverlay_Video;
     viaPortPrivPtr pPriv = (viaPortPrivPtr)data;
+    VIAPtr  pVia = VIAPTR(pScrn);
 
+    if(!RegionsEqual(&pPriv->clip, clipBoxes)) {
+	REGION_COPY(pScrn->pScreen, &pPriv->clip, clipBoxes);    
+	if (pPriv->autoPaint) 
+	    xf86XVFillKeyHelper(pScrn->pScreen, pPriv->colorKey, clipBoxes); 
+    } 
+
+    if (drw_x == pPriv->old_drw_x &&
+	drw_y == pPriv->old_drw_y &&
+	pVia->swov.oldPanningX == pVia->swov.panning_x &&
+	pVia->swov.oldPanningY == pVia->swov.panning_y)
+      
+	return Success;
+	
     lpUpdateOverlay->SrcLeft = pPriv->old_src_x;
     lpUpdateOverlay->SrcTop = pPriv->old_src_y;
     lpUpdateOverlay->SrcRight = pPriv->old_src_x + pPriv->old_src_w;