SDK scene viewer and previews are now gamma corrected

jme3-core/src/com/jme3/gde/core/scene/SceneApplication.java

@@ -136,9 +136,11 @@ public class SceneApplication extends Application implements LookupProvider {
     public SceneApplication() {
         Logger.getLogger("com.jme3").addHandler(logHandler);
         useCanvas = "true".equals(NbPreferences.forModule(Installer.class).get("use_lwjgl_canvas", "false"));
+        Logger.getLogger("com.jme3.renderer.opengl.TextureUtil").setLevel(Level.SEVERE);
         try {
             AppSettings newSetting = new AppSettings(true);
             newSetting.setFrameRate(30);
+            newSetting.setGammaCorrection(true);
             if (!useCanvas) {
                 newSetting.setCustomRenderer(AwtPanelsContext.class);
             }
@@ -169,7 +171,7 @@ public class SceneApplication extends Application implements LookupProvider {
             return ((JmeCanvasContext) getContext()).getCanvas();
         } else {
             if (panel == null) {
-                panel = ((AwtPanelsContext) getContext()).createPanel(PaintMode.Accelerated);
+                panel = ((AwtPanelsContext) getContext()).createPanel(PaintMode.Accelerated, true);
                 ((AwtPanelsContext) getContext()).setInputSource(panel);
                 attachPanel();
             }

jme3-core/src/com/jme3/gde/core/scene/ScenePreviewProcessor.java

@@ -37,6 +37,7 @@ import com.jme3.math.ColorRGBA;
 import com.jme3.math.Vector3f;
 import com.jme3.post.SceneProcessor;
 import com.jme3.renderer.Camera;
+import com.jme3.renderer.Caps;
 import com.jme3.renderer.RenderManager;
 import com.jme3.renderer.ViewPort;
 import com.jme3.renderer.queue.RenderQueue;
@@ -49,6 +50,8 @@ import java.awt.image.DataBufferByte;
 import java.awt.image.WritableRaster;
 import java.nio.ByteBuffer;
 import java.util.concurrent.ConcurrentLinkedQueue;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 /**
  *
@@ -113,8 +116,9 @@ public class ScenePreviewProcessor implements SceneProcessor {
         offCamera.lookAt(new Vector3f(0f, 0f, 0f), Vector3f.UNIT_Y);
 
         //setup framebuffer to use texture
-        offBuffer.setDepthBuffer(Format.Depth);
+        offBuffer.setDepthBuffer(Format.Depth);        
         offBuffer.setColorBuffer(Format.RGBA8);
+        offBuffer.setSrgb(true);
 
         //set viewport to render to offscreen framebuffer
         offView.setOutputFrameBuffer(offBuffer);
@@ -182,7 +186,7 @@ public class ScenePreviewProcessor implements SceneProcessor {
                 byte g = cpuArray[i + 1];
                 byte r = cpuArray[i + 2];
                 byte a = cpuArray[i + 3];
-
+                
                 cpuArray[i + 0] = a;
                 cpuArray[i + 1] = b;
                 cpuArray[i + 2] = g;