Graph GPUUISceneNewtDemo: Filter out all FSAA (multisample) caps if undesired (Graph VBAA + MSAA); Add NonFSAAGLCapabilitiesChooser

Notable: On RaspiPi4b w/ Mesa3D's Broadcom/VC driver,
the chosen capabilities is a multisamnple one even though not requested.

This causes
- extra performance overhead
- doubled AA: 1st our VBAA, then the FSAA (multisample) -> loss of sharpness

Simply dropping the undersired FSAA helps and ups performance
on the Raspi board (22 -> 35 fps).

1 files changed, 73 insertions, 0 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/util/caps/NonFSAAGLCapabilitiesChooser.java b/src/jogl/classes/com/jogamp/opengl/util/caps/NonFSAAGLCapabilitiesChooser.java
new file mode 100644
index 000000000..27d04e8b9
--- /dev/null
+++ b/src/jogl/classes/com/jogamp/opengl/util/caps/NonFSAAGLCapabilitiesChooser.java
@@ -0,0 +1,73 @@
+/**
+ * Copyright 2023 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.util.caps;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.jogamp.nativewindow.CapabilitiesImmutable;
+import com.jogamp.opengl.DefaultGLCapabilitiesChooser;
+import com.jogamp.opengl.GLCapabilitiesImmutable;
+import com.jogamp.opengl.GLCapabilitiesChooser;
+
+/**
+ * Custom {@link GLCapabilitiesChooser}, filtering out all full screen anti-aliasing (FSAA, multisample) capabilities,
+ * i.e. all matching {@link GLCapabilitiesImmutable} with {@link GLCapabilitiesImmutable#getSampleBuffers()}.
+ */
+public class NonFSAAGLCapabilitiesChooser extends DefaultGLCapabilitiesChooser {
+    @Override
+    public int chooseCapabilities(final CapabilitiesImmutable desired,
+                                  final List<? extends CapabilitiesImmutable> available,
+                                  int recommendedIdx) {
+        final GLCapabilitiesImmutable recommended;
+        if( 0 <= recommendedIdx && recommendedIdx < available.size() ) {
+            recommended = (GLCapabilitiesImmutable) available.get(recommendedIdx);
+        } else {
+            recommended = null;
+            recommendedIdx = -1;
+        }
+        final List<GLCapabilitiesImmutable> clean = new ArrayList<GLCapabilitiesImmutable>();
+        for (int i = 0; i < available.size(); i++) {
+            final GLCapabilitiesImmutable caps = (GLCapabilitiesImmutable) available.get(i);
+            if ( caps.getSampleBuffers() ) {
+                /** if( caps.equals(recommended) ) { // the matching index is enough!
+                    System.err.println("Dropping["+i+"] "+caps+", matched recommended["+recommendedIdx+"] = "+recommended);
+                    recommendedIdx = -1;
+                } else */ if( recommendedIdx == i ) {
+                    System.err.println("Dropping["+i+"] "+caps+", sameidx recommended["+recommendedIdx+"] = "+recommended);
+                    recommendedIdx = -1;
+                } else {
+                    System.err.println("Dropping "+caps+" != recommended["+recommendedIdx+"]");
+                }
+            } else {
+                clean.add(caps);
+            }
+        }
+        return super.chooseCapabilities(desired, clean, recommendedIdx);
+    }
+}