/*

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 *

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

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 * 2 along with this work; if not, write to the Free Software Foundation,

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 *

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/*

 * @test

 * @bug 6764257

 * @summary Tests that the alpha in opaque images doesn't affect result of alpha

 * compositing

 * @author Dmitri.Trembovetski@sun.com: area=Graphics

 * @run main/othervm OpaqueImageToSurfaceBlitTest

 * @run main/othervm -Dsun.java2d.noddraw=true OpaqueImageToSurfaceBlitTest

 * @run main/othervm -Dsun.java2d.opengl=True OpaqueImageToSurfaceBlitTest

 */

import java.awt.AlphaComposite;

import java.awt.Graphics2D;

import java.awt.GraphicsConfiguration;

import java.awt.GraphicsDevice;

import java.awt.GraphicsEnvironment;

import java.awt.image.BufferedImage;

import java.awt.image.DataBufferInt;

import java.awt.image.VolatileImage;

public class OpaqueImageToSurfaceBlitTest {

    public static void main(String[] args) {

        GraphicsEnvironment ge =

            GraphicsEnvironment.getLocalGraphicsEnvironment();

        GraphicsDevice gd = ge.getDefaultScreenDevice();

        GraphicsConfiguration gc = gd.getDefaultConfiguration();

        VolatileImage vi = gc.createCompatibleVolatileImage(16, 16);

        vi.validate(gc);

        BufferedImage bi =

            new BufferedImage(2, 2, BufferedImage.TYPE_INT_RGB);

        int data[] = ((DataBufferInt)bi.getRaster().getDataBuffer()).getData();

        data[0] = 0x0000007f;

        data[1] = 0x0000007f;

        data[2] = 0xff00007f;

        data[3] = 0xff00007f;

        Graphics2D g = vi.createGraphics();

        g.setComposite(AlphaComposite.SrcOver.derive(0.999f));

        g.drawImage(bi, 0, 0, null);

        bi = vi.getSnapshot();

        if (bi.getRGB(0, 0) != bi.getRGB(1, 1)) {

            throw new RuntimeException("Test FAILED: color at 0x0 ="+

                Integer.toHexString(bi.getRGB(0, 0))+" differs from 1x1 ="+

                Integer.toHexString(bi.getRGB(1,1)));

        }

        System.out.println("Test PASSED.");

    }

}