Bug1044: Offscreen drawable AWT/ImageIO results in black image on OSX…

…/[Java7-Java8]

- Using our PNGJ writer results in proper images (RGB and RGBA) on all platforms
- Seems to be a bug w/ AWT/ImageIO

make/scripts/tests.sh

@@ -440,7 +440,7 @@ function testawtswt() {
 #
 #testnoawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001RawInit00NEWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001GLJPanelInit01AWT $*
-testawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001GLJPanelInit02AWT $*
+#testawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001GLJPanelInit02AWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001GLWindowInit03NEWT $*
 
 #
@@ -533,6 +533,7 @@ testawt com.jogamp.opengl.test.junit.jogl.perf.TestPerf001GLJPanelInit02AWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.acore.TestGLAutoDrawableGLCanvasOnOffscrnCapsAWT $*
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.TestGLAutoDrawableGLWindowOnOffscrnCapsNEWT $*
 #testawt com.jogamp.opengl.test.junit.jogl.acore.TestGLAutoDrawableNewtCanvasAWTOnOffscrnCapsAWT $*
+testawt com.jogamp.opengl.test.junit.jogl.acore.TestGLOffscreenAutoDrawableBug1044AWT $*
 
 #testnoawt com.jogamp.opengl.test.junit.jogl.acore.ect.TestExclusiveContext01VSyncAnimNEWT $*
 #testawt   com.jogamp.opengl.test.junit.jogl.acore.ect.TestExclusiveContext01VSyncAnimAWT $*

src/test/com/jogamp/opengl/test/junit/jogl/acore/TestGLOffscreenAutoDrawableBug1044AWT.java

@@ -0,0 +1,106 @@
+/**
+ * Copyright 2014 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.test.junit.jogl.acore;
+
+import java.awt.image.BufferedImage;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLContext;
+import javax.media.opengl.GLDrawable;
+import javax.media.opengl.GLDrawableFactory;
+import javax.media.opengl.GLProfile;
+import javax.media.opengl.fixedfunc.GLLightingFunc;
+
+import org.junit.FixMethodOrder;
+import org.junit.Test;
+import org.junit.runners.MethodSorters;
+
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.GLReadBufferUtil;
+import com.jogamp.opengl.util.awt.AWTGLReadBufferUtil;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestGLOffscreenAutoDrawableBug1044AWT extends UITestCase {
+
+    @Test
+    public void test01GLOffscreenDrawable() throws InterruptedException {
+        final GLReadBufferUtil readBufferUtilRGB888 = new GLReadBufferUtil(false, false);
+        final GLReadBufferUtil readBufferUtilRGBA8888 = new GLReadBufferUtil(true, false);
+        final GLDrawableFactory fac = GLDrawableFactory.getFactory(GLProfile.getDefault());
+        final GLCapabilities glCap = new GLCapabilities(GLProfile.getMaxFixedFunc(true));
+        // Without line below, there is an error on Windows.
+        glCap.setDoubleBuffered(false);
+        //makes a new buffer 100x100
+        final GLDrawable glad = fac.createOffscreenDrawable(null, glCap, null, 100, 100);
+        glad.setRealized(true);
+        final GLContext context =  glad.createContext(null);
+        context.makeCurrent();
+
+        System.err.println("Chosen: "+glad.getChosenGLCapabilities());
+
+        final GL2 gl2 = context.getGL().getGL2();
+        gl2.glViewport(0, 0, 100, 100);
+
+        gl2.glShadeModel(GLLightingFunc.GL_SMOOTH);
+        gl2.glClearColor(1.0f, 0.80f, 0.80f, 1);    // This Will Clear The Background Color
+        gl2.glClearDepth(1.0);                    // Enables Clearing Of The Depth Buffer
+        gl2.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+        gl2.glLoadIdentity();                    // Reset The Projection Matrix
+
+        final AWTGLReadBufferUtil agb = new AWTGLReadBufferUtil(glad.getGLProfile(), true);
+        final BufferedImage image = agb.readPixelsToBufferedImage(context.getGL(), true);
+        try {
+            ImageIO.write(image, "PNG", new File(getSimpleTestName(".")+"-AWTImageIO.png"));
+        } catch (final IOException e) {
+            e.printStackTrace();
+        }
+
+        if(readBufferUtilRGB888.readPixels(gl2, false)) {
+            readBufferUtilRGB888.write(new File(getSimpleTestName(".")+"-PNGJ-rgb_.png"));
+        }
+        readBufferUtilRGB888.dispose(gl2);
+        if(readBufferUtilRGBA8888.readPixels(gl2, false)) {
+            readBufferUtilRGBA8888.write(new File(getSimpleTestName(".")+"-PNGJ-rgba.png"));
+        }
+        readBufferUtilRGBA8888.dispose(gl2);
+
+        context.destroy();
+        glad.setRealized(false);
+        System.out.println("Done!");
+    }
+
+    public static void main(final String[] args) {
+        org.junit.runner.JUnitCore.main(TestGLOffscreenAutoDrawableBug1044AWT.class.getName());
+    }
+}
+