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/**
* Copyright 2013 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
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.opengl.util.awt;
import java.awt.image.BufferedImage;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GLDrawable;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.util.GLPixelBuffer;
import com.jogamp.opengl.util.GLReadBufferUtil;
import com.jogamp.opengl.util.GLPixelBuffer.GLPixelBufferProvider;
/**
* {@link GLReadBufferUtil} specialization allowing to
* read out a frambuffer to an AWT BufferedImage
* utilizing {@link AWTPixelBufferProviderInt} for further AWT processing.
*/
public class AWTGLReadBufferUtil extends GLReadBufferUtil {
/**
* {@inheritDoc}
*
* Using the AWT {@link GLPixelBuffer}: {@link AWTGLPixelBuffer.AWTGLPixelBufferProvider}, always using alpha on OpenGL operations.
* <p>
* The host {@link PixelFormat} will be a 32bit INT compatible to AWT, capable to store the GL RGBA read data, regardless whether AWT utilizes the alpha component.
* </p>
*
* @param requestAlpha true for RGBA readPixels, otherwise RGB readPixels. Disclaimer: {@link #hasAlpha()}==true is forced due to the used {@link AWTGLPixelBuffer.AWTGLPixelBufferProvider} when calling {@link #readPixels(GL, int, int, int, int, boolean) readPixels}.
*/
public AWTGLReadBufferUtil(final GLProfile glp, final boolean requestAlpha) {
super(new AWTGLPixelBuffer.AWTGLPixelBufferProvider( glp.isGL2ES3() /* allowRowStride */ ), requestAlpha /* See Bug 1381 */, false);
}
/**
* Returns the {@link AWTGLPixelBuffer}, as filled by previous call to {@link #readPixels(GL, int, int, int, int, boolean)}.
*/
public AWTGLPixelBuffer getAWTGLPixelBuffer() { return (AWTGLPixelBuffer)this.getPixelBuffer(); }
/**
* Read the drawable's pixels to TextureData and Texture, if requested at construction,
* and returns an aligned {@link BufferedImage}.
*
* @param gl the current GL context object. It's read drawable is being used as the pixel source.
* @param awtOrientation flips the data vertically if <code>true</code>.
* The context's drawable {@link GLDrawable#isGLOriented()} state
* is taken into account.
* Vertical flipping is propagated to TextureData
* and handled in a efficient manner there (TextureCoordinates and TextureIO writer).
* @see #AWTGLReadBufferUtil(GLProfile, boolean)
*/
public BufferedImage readPixelsToBufferedImage(final GL gl, final boolean awtOrientation) {
return readPixelsToBufferedImage(gl, 0, 0, 0, 0, awtOrientation);
}
/**
* Read the drawable's pixels to TextureData and Texture, if requested at construction,
* and returns an aligned {@link BufferedImage}.
*
* @param gl the current GL context object. It's read drawable is being used as the pixel source.
* @param inX readPixel x offset
* @param inY readPixel y offset
* @param inWidth optional readPixel width value, used if [1 .. drawable.width], otherwise using drawable.width
* @param inHeight optional readPixel height, used if [1 .. drawable.height], otherwise using drawable.height
* @param awtOrientation flips the data vertically if <code>true</code>.
* The context's drawable {@link GLDrawable#isGLOriented()} state
* is taken into account.
* Vertical flipping is propagated to TextureData
* and handled in a efficient manner there (TextureCoordinates and TextureIO writer).
* @see #AWTGLReadBufferUtil(GLProfile, boolean)
*/
public BufferedImage readPixelsToBufferedImage(final GL gl, final int inX, final int inY, final int inWidth, final int inHeight, final boolean awtOrientation) {
final GLDrawable drawable = gl.getContext().getGLReadDrawable();
final int width, height;
if( 0 >= inWidth || drawable.getSurfaceWidth() < inWidth ) {
width = drawable.getSurfaceWidth();
} else {
width = inWidth;
}
if( 0 >= inHeight || drawable.getSurfaceHeight() < inHeight ) {
height = drawable.getSurfaceHeight();
} else {
height= inHeight;
}
if( readPixelsImpl(drawable, gl, inX, inY, width, height, awtOrientation) ) {
final BufferedImage image = getAWTGLPixelBuffer().getAlignedImage(width, height);
if( getTextureData().getMustFlipVertically() ) {
ImageUtil.flipImageVertically(image);
}
return image;
}
return null;
}
}
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