* Render off screen surfaces even if main screen isn't visible

* AWTLoader now supports 16-bit grayscale PNG loading as Luminance16
 * AWTLoader uses try/finally on stream
 * Fix exception in MaterialLoader (was it really that hard to fix, normen?)

git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@8185 75d07b2b-3a1a-0410-a2c5-0572b91ccdca

engine/src/core/com/jme3/app/SimpleApplication.java

@@ -260,9 +260,7 @@ public abstract class SimpleApplication extends Application {
 
         // render states
         stateManager.render(renderManager);
-        if (context.isRenderable()){
-            renderManager.render(tpf);
-        }
+        renderManager.render(tpf, context.isRenderable());
         simpleRender(renderManager);
         stateManager.postRender();
     }

engine/src/core/com/jme3/renderer/RenderManager.java

@@ -1148,7 +1148,7 @@ public class RenderManager {
      * 
      * @param tpf Time per frame value
      */
-    public void render(float tpf) {
+    public void render(float tpf, boolean mainFrameBufferActive) {
         if (renderer instanceof NullRenderer) {
             return;
         }
@@ -1156,13 +1156,22 @@ public class RenderManager {
         this.shader = renderer.getCaps().contains(Caps.GLSL100);
 
         for (int i = 0; i < preViewPorts.size(); i++) {
-            renderViewPort(preViewPorts.get(i), tpf);
+            ViewPort vp = preViewPorts.get(i);
+            if (vp.getOutputFrameBuffer() != null || mainFrameBufferActive){
+                renderViewPort(vp, tpf);
+            }
         }
         for (int i = 0; i < viewPorts.size(); i++) {
-            renderViewPort(viewPorts.get(i), tpf);
+            ViewPort vp = viewPorts.get(i);
+            if (vp.getOutputFrameBuffer() != null || mainFrameBufferActive){
+                renderViewPort(vp, tpf);
+            }
         }
         for (int i = 0; i < postViewPorts.size(); i++) {
-            renderViewPort(postViewPorts.get(i), tpf);
+            ViewPort vp = postViewPorts.get(i);
+            if (vp.getOutputFrameBuffer() != null || mainFrameBufferActive){
+                renderViewPort(vp, tpf);
+            }
         }
     }
 }

engine/src/desktop/com/jme3/texture/plugins/AWTLoader.java

@@ -43,6 +43,7 @@ import java.awt.image.ColorModel;
 import java.awt.image.ComponentColorModel;
 import java.awt.image.DataBuffer;
 import java.awt.image.DataBufferByte;
+import java.awt.image.DataBufferUShort;
 import java.awt.image.DirectColorModel;
 import java.io.IOException;
 import java.io.InputStream;
@@ -65,12 +66,15 @@ public class AWTLoader implements AssetLoader {
                                       Transparency.BITMASK,
                                       DataBuffer.TYPE_BYTE);
 
-    private byte[] extractImageData(BufferedImage img){
+    private Object extractImageData(BufferedImage img){
         DataBuffer buf = img.getRaster().getDataBuffer();
         switch (buf.getDataType()){
             case DataBuffer.TYPE_BYTE:
                 DataBufferByte byteBuf = (DataBufferByte) buf;
                 return byteBuf.getData();
+            case DataBuffer.TYPE_USHORT:
+                DataBufferUShort shortBuf = (DataBufferUShort) buf;
+                return shortBuf.getData();
         }
         return null;
     }
@@ -87,25 +91,55 @@ public class AWTLoader implements AssetLoader {
         }
     }
     
+    private void flipImage(short[] img, int width, int height, int bpp){
+        int scSz = (width * bpp) / 8;
+        scSz /= 2; // Because shorts are 2 bytes
+        byte[] sln = new byte[scSz];
+        int y2 = 0;
+        for (int y1 = 0; y1 < height / 2; y1++){
+            y2 = height - y1 - 1;
+            System.arraycopy(img, y1 * scSz, sln, 0,         scSz);
+            System.arraycopy(img, y2 * scSz, img, y1 * scSz, scSz);
+            System.arraycopy(sln, 0,         img, y2 * scSz, scSz);
+        }
+    }
+
     public Image load(BufferedImage img, boolean flipY){
         int width = img.getWidth();
         int height = img.getHeight();
 
         switch (img.getType()){
+            case BufferedImage.TYPE_4BYTE_ABGR: // most common in PNG images w/ alpha
+               byte[] dataBuf1 = (byte[]) extractImageData(img);
+               if (flipY)
+                   flipImage(dataBuf1, width, height, 32);
+                
+               ByteBuffer data1 = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight()*4);
+               data1.put(dataBuf1);
+               return new Image(Format.ABGR8, width, height, data1);
             case BufferedImage.TYPE_3BYTE_BGR: // most common in JPEG images
-               byte[] dataBuf = extractImageData(img);
+               byte[] dataBuf2 = (byte[]) extractImageData(img);
                if (flipY)
-                   flipImage(dataBuf, width, height, 24);
-               ByteBuffer data = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight()*3);
-               data.put(dataBuf);
-               return new Image(Format.BGR8, width, height, data);
+                   flipImage(dataBuf2, width, height, 24);
+               
+               ByteBuffer data2 = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight()*3);
+               data2.put(dataBuf2);
+               return new Image(Format.BGR8, width, height, data2);
             case BufferedImage.TYPE_BYTE_GRAY: // grayscale fonts
-                byte[] dataBuf2 = extractImageData(img);
+                byte[] dataBuf3 = (byte[]) extractImageData(img);
                 if (flipY)
-                    flipImage(dataBuf2, width, height, 8);
-                ByteBuffer data2 = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight());
-                data2.put(dataBuf2);
-                return new Image(Format.Luminance8, width, height, data2);
+                    flipImage(dataBuf3, width, height, 8);
+                ByteBuffer data3 = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight());
+                data3.put(dataBuf3);
+                return new Image(Format.Luminance8, width, height, data3);
+            case BufferedImage.TYPE_USHORT_GRAY: // grayscale heightmap
+                short[] dataBuf4 = (short[]) extractImageData(img);
+                if (flipY)
+                    flipImage(dataBuf4, width, height, 16);
+                
+                ByteBuffer data4 = BufferUtils.createByteBuffer(img.getWidth()*img.getHeight()*2);
+                data4.asShortBuffer().put(dataBuf4);
+                return new Image(Format.Luminance16, width, height, data4);
             default:
                 break;
         }
@@ -163,11 +197,18 @@ public class AWTLoader implements AssetLoader {
 
     public Object load(AssetInfo info) throws IOException {
         if (ImageIO.getImageWritersBySuffix(info.getKey().getExtension()) != null){
-            InputStream in = info.openStream();
+            
             boolean flip = ((TextureKey) info.getKey()).isFlipY();
+            InputStream in = null;
+            try {
+                in = info.openStream();
                 Image img = load(in, flip);
-            in.close();
                 return img;
+            } finally {
+                if (in != null){
+                    in.close();
+                }
+            }
         }
         return null;
     }

engine/src/ogre/com/jme3/scene/plugins/ogre/MaterialLoader.java

@@ -458,6 +458,8 @@ public class MaterialLoader implements AssetLoader {
                 list.put(matName, mat);
             }
         }
+        
+        return list;
     }
 
     public Object load(AssetInfo info) throws IOException {