Awt Panel now supports gamma correct pipeline. Default stays non srgb for backward compatibility. But IMO it should be set to srgb by default to promote the srgb pipeline.

jme3-desktop/src/main/java/com/jme3/system/awt/AwtPanel.java

@@ -58,6 +58,7 @@ public class AwtPanel extends Canvas implements SceneProcessor {
     
     private BufferedImage img;
     private FrameBuffer fb;
+    private boolean srgb = false;
     private ByteBuffer byteBuf;
     private IntBuffer intBuf;
     private RenderManager rm;
@@ -78,8 +79,12 @@ public class AwtPanel extends Canvas implements SceneProcessor {
     private final Object lock = new Object();
     
     public AwtPanel(PaintMode paintMode){
+        this(paintMode, false);
+    }
+    
+    public AwtPanel(PaintMode paintMode, boolean srgb){
         this.paintMode = paintMode;
-        
+        this.srgb = srgb;
         if (paintMode == PaintMode.Accelerated){
             setIgnoreRepaint(true);
         }
@@ -246,6 +251,7 @@ public class AwtPanel extends Canvas implements SceneProcessor {
         fb = new FrameBuffer(width, height, 1);
         fb.setDepthBuffer(Format.Depth);
         fb.setColorBuffer(Format.RGB8);
+        fb.setSrgb(srgb);
         
         if (attachAsMain){
             rm.getRenderer().setMainFrameBufferOverride(fb);

jme3-desktop/src/main/java/com/jme3/system/awt/AwtPanelsContext.java

@@ -153,6 +153,12 @@ public class AwtPanelsContext implements JmeContext {
         panels.add(panel);
         return panel;
     }
+    
+    public AwtPanel createPanel(PaintMode paintMode, boolean srgb){
+        AwtPanel panel = new AwtPanel(paintMode, srgb);
+        panels.add(panel);
+        return panel;
+    }
 
     private void initInThread(){
         listener.initialize();