/**
* Copyright 2010 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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*/
package com.jogamp.opengl.test.junit.jogl.offscreen;
import com.jogamp.opengl.*;
import com.jogamp.opengl.util.GLReadBufferUtil;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import com.jogamp.nativewindow.*;
public class Surface2File implements SurfaceUpdatedListener {
final String filename;
final boolean alpha;
final GLReadBufferUtil readBufferUtil;
int shotNum = 0;
public Surface2File(final String filename, final boolean alpha) {
this.filename = filename;
this.alpha = alpha;
this.readBufferUtil = new GLReadBufferUtil(alpha, false);
}
public void dispose(final GL gl) {
readBufferUtil.dispose(gl);
}
public void surfaceUpdated(final Object updater, final NativeSurface ns, final long when) {
if (updater instanceof GLDrawable) {
final GLDrawable drawable = (GLDrawable) updater;
final GLContext ctx = GLContext.getCurrent();
if (null != ctx && ctx.getGLDrawable() == drawable) {
final GL gl = ctx.getGL();
// FIXME glFinish() is an expensive paranoia sync, should not be necessary due to spec
gl.glFinish();
if(readBufferUtil.readPixels(gl, false)) {
gl.glFinish();
try {
surface2File();
} catch (final IOException ex) {
throw new RuntimeException("can not write survace to file", ex);
}
}
}
}
}
public void surface2File() throws IOException {
if (!readBufferUtil.isValid()) {
return;
}
final StringWriter sw = new StringWriter();
{
final String pfmt = alpha ? "rgba" : "rgb_" ;
new PrintWriter(sw).printf("%s-I_%s-%04d.png", filename, pfmt, shotNum);
}
final File file = new File(sw.toString());
readBufferUtil.write(file);
shotNum++;
}
}