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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * accompanied this code).
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package test.com.sun.glass.ui.monocle;

import java.nio.ByteBuffer;
import org.junit.jupiter.api.Test;
import com.sun.glass.ui.monocle.FramebufferShim;

public class FramebufferTest {

    @Test
    public void testOverflow32() {
        ByteBuffer screenBuffer = ByteBuffer.allocate(100 * 100 * 4);
        FramebufferShim fb = new FramebufferShim(screenBuffer, 100, 100, 4, false);
        ByteBuffer windowBuffer = ByteBuffer.allocate(200 * 200 * 4);
        fb.reset();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 1f);
        windowBuffer.clear();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 1f);
        windowBuffer.clear();
        fb.reset();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 0.5f);
        windowBuffer.clear();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 0.5f);
        windowBuffer.clear();
    }

    @Test
    public void testOverflow16() {
        // A 16-bit framebuffer stores its content in 32-bits and writes out
        // to a 32-bit target. So it needs four bytes per pixel in its buffer.
        ByteBuffer screenBuffer = ByteBuffer.allocate(100 * 100 * 4);
        FramebufferShim fb = new FramebufferShim(screenBuffer, 100, 100, 2, false);
        ByteBuffer windowBuffer = ByteBuffer.allocate(200 * 200 * 4);
        fb.reset();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 1f);
        windowBuffer.clear();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 1f);
        windowBuffer.clear();
        fb.reset();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 0.5f);
        windowBuffer.clear();
        fb.composePixels(windowBuffer, -50, -50, 200, 200, 0.5f);
        windowBuffer.clear();
    }

}
