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package com.jogamp.opengl.test.junit.jogl.caps;
import java.nio.ByteBuffer;
import com.jogamp.opengl.GL;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLCapabilitiesImmutable;
import com.jogamp.opengl.GLDrawableFactory;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
import org.junit.Assert;
import org.junit.Test;
import org.junit.FixMethodOrder;
import org.junit.runners.MethodSorters;
import com.jogamp.opengl.test.junit.util.UITestCase;
import com.jogamp.opengl.util.GLReadBufferUtil;
@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestBug605FlippedImageNEWT extends UITestCase {
static class FlippedImageTest implements GLEventListener {
public void display(final GLAutoDrawable drawable) {
final GL2 gl = drawable.getGL().getGL2();
gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT | GL.GL_STENCIL_BUFFER_BIT | GL2.GL_ACCUM_BUFFER_BIT );
gl.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
gl.glLoadIdentity();
gl.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
gl.glLoadIdentity();
// red below
gl.glColor3f(1, 0, 0);
gl.glRectf(-1, -1, 1, 0);
// green above
gl.glColor3f(0, 1, 0);
gl.glRectf(-1, 0, 1, 1);
gl.glFinish();
final GLCapabilitiesImmutable caps = drawable.getChosenGLCapabilities();
if(caps.getAccumGreenBits() > 0) {
gl.glAccum(GL2.GL_ACCUM, 1.0f);
gl.glAccum(GL2.GL_RETURN, 1.0f);
}
gl.glFinish();
}
public void init(final GLAutoDrawable drawable) {
final GL gl = drawable.getGL();
System.err.println("GL_RENDERER: "+gl.glGetString(GL.GL_RENDERER));
System.err.println("GL_VERSION: "+gl.glGetString(GL.GL_VERSION));
}
public void reshape(final GLAutoDrawable glDrawable, final int x, final int y, final int w, final int h) {}
public void displayChanged(final GLAutoDrawable drawable, final boolean modeChanged, final boolean deviceChanged) {}
public void dispose(final GLAutoDrawable drawable) {}
}
static final int green = 0x0000ff00; // above
static final int red = 0x00ff0000; // below
private int getRGB(final ByteBuffer bb, final int o) {
return ( bb.get(o+0) & 0x000000ff ) << 16 |
( bb.get(o+1) & 0x000000ff ) << 8 |
( bb.get(o+2) & 0x000000ff );
}
private void testFlipped(final ByteBuffer bb, final int width, final int height, final int comp) {
// Default origin 0/0 is lower left corner, so is the memory layout
// x=0, y=0: RGB -> _RGB [high-byte .. low-byte]
final int below = getRGB(bb, 0);
System.err.println("below: 0x"+Integer.toHexString(below));
// x=0, y=height-1: RGB -> _RGB [high-byte .. low-byte]
final int above= getRGB(bb, ( height - 1 ) * ( width * comp ));
System.err.println("above: 0x"+Integer.toHexString(above));
if (above == green && below == red) {
System.out.println("Image right side up");
} else if (above == red && below == green) {
Assert.assertTrue("Image is flipped", false);
} else {
Assert.assertTrue("Error in test", false);
}
}
private void test(final GLCapabilitiesImmutable caps) {
final GLReadBufferUtil rbu = new GLReadBufferUtil(false, false);
final GLDrawableFactory glFactory = GLDrawableFactory.getFactory(caps.getGLProfile());
final GLAutoDrawable glad = glFactory.createOffscreenAutoDrawable(null, caps, null, 256, 256);
final FlippedImageTest tglel = new FlippedImageTest();
glad.addGLEventListener(tglel);
final SnapshotGLEventListener snap = new SnapshotGLEventListener(rbu);
glad.addGLEventListener(snap);
snap.setMakeSnapshotAlways(true);
// 1 frame incl. snapshot to memory & file
glad.display();
System.err.println("XXX "+glad.getChosenGLCapabilities());
System.err.println("XXX "+glad.getContext().getGLVersion());
testFlipped((ByteBuffer)rbu.getPixelBuffer().buffer, glad.getSurfaceWidth(), glad.getSurfaceHeight(), 3);
glad.destroy();
}
@Test
public void test01DefaultFBO() {
final GLProfile glp = GLProfile.get(GLProfile.GL2);
final GLCapabilities caps = new GLCapabilities(glp);
caps.setFBO(true);
test(caps);
}
@Test
public void test01StencilFBO() {
final GLProfile glp = GLProfile.get(GLProfile.GL2);
final GLCapabilities caps = new GLCapabilities(glp);
caps.setStencilBits(8);
caps.setFBO(true);
test(caps);
}
@Test
public void test01DefaultPBuffer() {
final GLProfile glp = GLProfile.get(GLProfile.GL2);
final GLCapabilities caps = new GLCapabilities(glp);
caps.setPBuffer(true);
test(caps);
}
@Test
public void test01AccumStencilPBuffer() {
final GLProfile glp = GLProfile.get(GLProfile.GL2);
final GLCapabilities caps = new GLCapabilities(glp);
caps.setAccumRedBits(16);
caps.setAccumGreenBits(16);
caps.setAccumBlueBits(16);
caps.setStencilBits(8);
caps.setPBuffer(true);
test(caps);
}
public static void main(final String[] args) {
org.junit.runner.JUnitCore.main(TestBug605FlippedImageNEWT.class.getName());
}
}