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diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/VolatileImageProvider.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/VolatileImageProvider.java
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+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/VolatileImageProvider.java
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+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.utils;
+
+import java.awt.GraphicsConfiguration;
+import java.awt.image.VolatileImage;
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * @author Antti Villberg
+ */
+public interface VolatileImageProvider {
+
+    /**
+     * @param gc
+     * @param createdNew set to <code>true</code> if the provider created a new
+     *        VolatileImage or <code>false</code> if a previously cached image
+     *        is returned. A <code>null</code> value will simply be ignored.
+     * @return
+     */
+    VolatileImage get(GraphicsConfiguration gc, AtomicInteger validateResult);
+
+    void dispose();
+
+}