st/xorg: Add a function to flush pending rendering and damage

This is needed to properly sync with host side rendering. For example,
make sure we flush colorkey painting before updating the overlay.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>

2 files changed, 37 insertions, 30 deletions

diff --git a/src/gallium/state_trackers/xorg/xorg_driver.c b/src/gallium/state_trackers/xorg/xorg_driver.c
index 1ee79ae177..66685ecec6 100644
--- a/src/gallium/state_trackers/xorg/xorg_driver.c
+++ b/src/gallium/state_trackers/xorg/xorg_driver.c
@@ -538,44 +538,37 @@ drv_pre_init(ScrnInfoPtr pScrn, int flags)
     return TRUE;
 }
 
-static void drv_block_handler(int i, pointer blockData, pointer pTimeout,
-                              pointer pReadmask)
+void xorg_flush(ScreenPtr pScreen)
 {
-    ScreenPtr pScreen = screenInfo.screens[i];
     modesettingPtr ms = modesettingPTR(xf86Screens[pScreen->myNum]);
 
-    pScreen->BlockHandler = ms->blockHandler;
-    pScreen->BlockHandler(i, blockData, pTimeout, pReadmask);
-    pScreen->BlockHandler = drv_block_handler;
-
     if (ms->ctx) {
-       int j;
+	int j;
 
-       ms->ctx->flush(ms->ctx, PIPE_FLUSH_RENDER_CACHE,
-		      ms->dirtyThrottling ?
-		      &ms->fence[XORG_NR_FENCES-1] :
-		      NULL);
+	ms->ctx->flush(ms->ctx, PIPE_FLUSH_RENDER_CACHE,
+		       ms->dirtyThrottling ?
+		       &ms->fence[XORG_NR_FENCES-1] :
+		       NULL);
        
-       if (ms->dirtyThrottling) {
-	   if (ms->fence[0])
-	       ms->ctx->screen->fence_finish(ms->ctx->screen,
-					     ms->fence[0], 0);
+	if (ms->dirtyThrottling) {
+	    if (ms->fence[0])
+		ms->ctx->screen->fence_finish(ms->ctx->screen,
+					      ms->fence[0], 0);
   
-	   /* The amount of rendering generated by a block handler can be
-	    * quite small.  Let us get a fair way ahead of hardware before
-	    * throttling.
-	    */
-	   for (j = 0; j < XORG_NR_FENCES - 1; j++)
-	       ms->screen->fence_reference(ms->screen,
-					   &ms->fence[j],
-					   ms->fence[j+1]);
-
-	   ms->screen->fence_reference(ms->screen,
-				       &ms->fence[XORG_NR_FENCES-1],
-				       NULL);
-       }
+	    /* The amount of rendering generated by a block handler can be
+	     * quite small.  Let us get a fair way ahead of hardware before
+	     * throttling.
+	     */
+	    for (j = 0; j < XORG_NR_FENCES - 1; j++)
+		ms->screen->fence_reference(ms->screen,
+					    &ms->fence[j],
+					    ms->fence[j+1]);
+
+	    ms->screen->fence_reference(ms->screen,
+					&ms->fence[XORG_NR_FENCES-1],
+					NULL);
+	}
     }
-        
 
 #ifdef DRM_MODE_FEATURE_DIRTYFB
     {
@@ -608,6 +601,19 @@ static void drv_block_handler(int i, pointer blockData, pointer pTimeout,
 #endif
 }
 
+static void drv_block_handler(int i, pointer blockData, pointer pTimeout,
+                              pointer pReadmask)
+{
+    ScreenPtr pScreen = screenInfo.screens[i];
+    modesettingPtr ms = modesettingPTR(xf86Screens[pScreen->myNum]);
+
+    pScreen->BlockHandler = ms->blockHandler;
+    pScreen->BlockHandler(i, blockData, pTimeout, pReadmask);
+    pScreen->BlockHandler = drv_block_handler;
+
+    xorg_flush(pScreen);
+}
+
 static Bool
 drv_create_screen_resources(ScreenPtr pScreen)
 {
diff --git a/src/gallium/state_trackers/xorg/xorg_tracker.h b/src/gallium/state_trackers/xorg/xorg_tracker.h
index a3fb5e5dad..56397b8fea 100644
--- a/src/gallium/state_trackers/xorg/xorg_tracker.h
+++ b/src/gallium/state_trackers/xorg/xorg_tracker.h
@@ -156,6 +156,7 @@ CustomizerPtr xorg_customizer(ScrnInfoPtr pScrn);
 
 Bool xorg_has_gallium(ScrnInfoPtr pScrn);
 
+void xorg_flush(ScreenPtr pScreen);
 /***********************************************************************
  * xorg_exa.c
  */