add comments and adjust formatting

src/itdelatrisu/opsu/render/CurveRenderState.java

@@ -76,6 +76,11 @@ public class CurveRenderState {
 		FrameBufferCache.init(width, height);
 	}
 
+	/**
+	 * Undo the static state. Static state setup caused by calls to 
+	 * {@link #draw(org.newdawn.slick.Color, org.newdawn.slick.Color, itdelatrisu.opsu.objects.curves.Vec2f[])}
+	 * are undone.
+	 */
 	public static void shutdown()
 	{
 		staticState.shutdown();
@@ -144,7 +149,7 @@ public class CurveRenderState {
 	}
 
 	/**
-	 * Discard the cache.
+	 * Discard the cache mapping for this curve object
 	 */
 	public void discardCache() {
 		fbo = null;
@@ -454,6 +459,9 @@ public class CurveRenderState {
 			}
 		}
 
+		/**
+		 * Cleanup any OpenGL objects that may have been initialized.
+		 */
 		private void shutdown()
 		{
 			if(gradientTexture != 0)

src/itdelatrisu/opsu/render/FrameBufferCache.java

@@ -122,11 +122,14 @@ public class FrameBufferCache {
 		return buffer;
 	}
 
+	/**
+	 * Clear the cache pool of Framebuffers.
+	 * If there were any previous Framebuffers in the cache delete them
+	 * this is necessary for cases when the game gets re-started with a
+	 * different resolution without closing the process
+	 */
 	public static void shutdown()
 	{
-		//if there were any previous Framebuffers in the cache delete them
-		//this is necessary for cases when the game gets re-started with a
-		//different resolution without closing the process
 		FrameBufferCache fbcInstance = FrameBufferCache.getInstance();
 		for(Rendertarget target: fbcInstance.cache)
 		{