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/*
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* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.java2d.opengl;
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import sun.lwawt.macosx.CFRetainedResource;
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import sun.lwawt.LWWindowPeer;
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import sun.java2d.SurfaceData;
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import sun.java2d.NullSurfaceData;
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import sun.awt.CGraphicsConfig;
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import java.awt.Rectangle;
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import java.awt.GraphicsConfiguration;
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import java.awt.Transparency;
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public class CGLLayer extends CFRetainedResource {
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private native long nativeCreateLayer();
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private static native void validate(long layerPtr, CGLSurfaceData cglsd);
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private static native void blitTexture(long layerPtr);
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private LWWindowPeer peer;
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private SurfaceData surfaceData; // represents intermediate buffer (texture)
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public CGLLayer(LWWindowPeer peer) {
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super(0, true);
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setPtr(nativeCreateLayer());
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this.peer = peer;
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}
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public long getPointer() {
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return ptr;
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}
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public Rectangle getBounds() {
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return peer.getBounds();
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}
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public GraphicsConfiguration getGraphicsConfiguration() {
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return peer.getGraphicsConfiguration();
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}
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public boolean isOpaque() {
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return !peer.isTranslucent();
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}
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public int getTransparency() {
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return peer.isTranslucent() ? Transparency.TRANSLUCENT :
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Transparency.OPAQUE;
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}
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public Object getDestination() {
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return peer;
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}
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public SurfaceData replaceSurfaceData() {
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if (peer.getBounds().isEmpty()) {
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surfaceData = NullSurfaceData.theInstance;
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return surfaceData;
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}
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// the layer redirects all painting to the buffer's graphics
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// and blits the buffer to the layer surface (in drawInCGLContext callback)
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CGraphicsConfig gc = (CGraphicsConfig)peer.getGraphicsConfiguration();
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surfaceData = gc.createSurfaceData(this);
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// the layer holds a reference to the buffer, which in
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// turn has a reference back to this layer
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if (surfaceData instanceof CGLSurfaceData) {
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validate((CGLSurfaceData)surfaceData);
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}
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return surfaceData;
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}
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public SurfaceData getSurfaceData() {
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return surfaceData;
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}
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public void validate(final CGLSurfaceData cglsd) {
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OGLRenderQueue rq = OGLRenderQueue.getInstance();
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rq.lock();
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try {
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validate(getPointer(), cglsd);
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} finally {
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rq.unlock();
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}
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}
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@Override
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public void dispose() {
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// break the connection between the layer and the buffer
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validate(null);
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super.dispose();
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}
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// ----------------------------------------------------------------------
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// NATIVE CALLBACKS
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// ----------------------------------------------------------------------
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private void drawInCGLContext() {
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// tell the flusher thread not to update the intermediate buffer
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// until we are done blitting from it
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OGLRenderQueue rq = OGLRenderQueue.getInstance();
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rq.lock();
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try {
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blitTexture(getPointer());
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} finally {
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rq.unlock();
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}
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}
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}
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