GLCapabilities Native Aquisition: Set alpha bits at last - due to it's auto setting by setSampleBuffers(true) and setBackgroundOpaque(false)

This bug lead to X11 GLCapabilities rgba: 8/8/8/1 - which ofc is invalid. Sideeffect was a bad selected GLXFB configuration
and the GLContext couldn't be made current.

Patch sets alpha bits reflecting reality carefully after opaque/samples. Added API doc note.

3 files changed, 4 insertions, 7 deletions

diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestMultisampleES2NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestMultisampleES2NEWT.java
index b2dad1f39..02fcae6ef 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestMultisampleES2NEWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestMultisampleES2NEWT.java
@@ -57,7 +57,6 @@ import com.jogamp.opengl.util.texture.TextureIO;
 
 public class TestMultisampleES2NEWT extends UITestCase {
   static long durationPerTest = 60; // ms
-  private GLWindow window;
 
   public static void main(String[] args) {
      for(int i=0; i<args.length; i++) {
@@ -70,17 +69,17 @@ public class TestMultisampleES2NEWT extends UITestCase {
      org.junit.runner.JUnitCore.main(tstname);
   }
 
-  @Test(timeout = 3000) // 3s timeout
+  @Test
   public void testOnscreenMultiSampleAA0() throws InterruptedException {
     testMultiSampleAAImpl(false, false, 0);
   }
 
-  @Test(timeout = 3000) // 3s timeout
+  @Test
   public void testOnscreenMultiSampleAA8() throws InterruptedException {
     testMultiSampleAAImpl(false, false, 8);
   }
 
-  @Test(timeout = 3000) // 3s timeout
+  @Test
   public void testOffscreenPBufferMultiSampleAA0() throws InterruptedException {
     testMultiSampleAAImpl(false, true, 0);
   }
@@ -119,7 +118,7 @@ public class TestMultisampleES2NEWT extends UITestCase {
         caps.setNumSamples(reqSamples);
     }
 
-    window = GLWindow.create(caps);
+    final GLWindow window = GLWindow.create(caps);
     window.setCapabilitiesChooser(chooser);
     window.addGLEventListener(new MultisampleDemoES2(reqSamples>0?true:false));
     window.addGLEventListener(new GLEventListener() {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestTranslucencyAWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestTranslucencyAWT.java
index 8e720965c..7cce5d1e4 100644
--- a/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestTranslucencyAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/caps/TestTranslucencyAWT.java
@@ -65,7 +65,6 @@ public class TestTranslucencyAWT extends UITestCase {
     public static void initClass() {
         size = new Dimension(400,200);
         glCaps = new GLCapabilities(null);
-        glCaps.setAlphaBits(8);
         glCaps.setBackgroundOpaque(false);
     }
 
diff --git a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestTranslucentParentingAWT.java b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestTranslucentParentingAWT.java
index 57b8517a6..373c83fce 100644
--- a/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestTranslucentParentingAWT.java
+++ b/src/test/com/jogamp/opengl/test/junit/newt/parenting/TestTranslucentParentingAWT.java
@@ -69,7 +69,6 @@ public class TestTranslucentParentingAWT extends UITestCase {
     public static void initClass() {
         size = new Dimension(400,200);
         glCaps = new GLCapabilities(null);
-        glCaps.setAlphaBits(8);
         glCaps.setBackgroundOpaque(false);
     }