sync viewport

vtm/src/org/oscim/map/Map.java

@@ -340,7 +340,9 @@ public abstract class Map implements TaskQueue {
 		return mLayers.handleGesture(g, e);
 	}
 
+	/** Called on render thread, use synchronized! */
 	public abstract void beginFrame();
 
-	public abstract void doneFrame();
+	/** Called on render thread, use synchronized! */
+	public abstract void doneFrame(boolean needsRedraw);
 }

vtm/src/org/oscim/renderer/MapRenderer.java

@@ -70,33 +70,22 @@ public class MapRenderer {
 		mClearColor = GLUtils.colorToFloat(color);
 	}
 
-	private final Runnable renderBegin = new Runnable() {
-		@Override
-		public void run() {
-			mMap.beginFrame();
-		}
-	};
-	private final Runnable renderDone = new Runnable() {
-		@Override
-		public void run() {
-			mMap.doneFrame();
-		}
-	};
-
 	public void onDrawFrame() {
 		frametime = System.currentTimeMillis();
+		rerender = false;
 
-		mMap.post(renderBegin);
+		mMap.beginFrame();
 
 		draw();
 
-		mMap.post(renderDone);
+		mMap.doneFrame(rerender);
 
 		mBufferPool.releaseBuffers();
 		TextureItem.disposeTextures();
 	}
 
 	private void draw() {
+
 		GLState.setClearColor(mClearColor);
 
 		gl.depthMask(true);
@@ -150,10 +139,6 @@ public class MapRenderer {
 			BufferObject.checkBufferUsage(true);
 			// FIXME also throw out some textures etc
 		}
-		if (rerender) {
-			mMap.render();
-			rerender = false;
-		}
 	}
 
 	public void onSurfaceChanged(int width, int height) {