GraphUI: Scene/Shape: Decouple PMVMatrix operations (picking, obj<->win) by using a local instance, enable performing on any thread (not using a blocking GL renderer thread)

Shape got 2 win<->obj and size-retrieval variants:
(a) using given PMVMatrix and viewport
(b) using a local PMVMatrix w/ Scene's viewport and using Scene's setupMatrix()

7 files changed, 220 insertions, 184 deletions

diff --git a/src/demos/com/jogamp/opengl/demos/graph/ui/GPUUISceneTextAnim01.java b/src/demos/com/jogamp/opengl/demos/graph/ui/GPUUISceneTextAnim01.java
index 8658fdf4d..19fa5f0a6 100644
--- a/src/demos/com/jogamp/opengl/demos/graph/ui/GPUUISceneTextAnim01.java
+++ b/src/demos/com/jogamp/opengl/demos/graph/ui/GPUUISceneTextAnim01.java
@@ -35,21 +35,15 @@ import java.util.Locale;
 import com.jogamp.common.util.IOUtil;
 import com.jogamp.graph.curve.Region;
 import com.jogamp.graph.curve.opengl.RegionRenderer;
-import com.jogamp.graph.curve.opengl.RenderState;
 import com.jogamp.graph.font.Font;
 import com.jogamp.graph.font.FontFactory;
 import com.jogamp.graph.font.FontScale;
-import com.jogamp.graph.geom.SVertex;
 import com.jogamp.graph.ui.gl.Scene;
 import com.jogamp.graph.ui.gl.Shape;
 import com.jogamp.graph.ui.gl.shapes.Label;
 import com.jogamp.newt.MonitorDevice;
 import com.jogamp.newt.Window;
-import com.jogamp.newt.event.GestureHandler.GestureEvent;
-import com.jogamp.newt.event.InputEvent;
 import com.jogamp.newt.event.MouseEvent;
-import com.jogamp.newt.event.MouseEvent.PointerClass;
-import com.jogamp.newt.event.PinchToZoomGesture;
 import com.jogamp.newt.opengl.GLWindow;
 import com.jogamp.opengl.GL;
 import com.jogamp.opengl.GL2ES2;
@@ -61,7 +55,6 @@ import com.jogamp.opengl.JoglVersion;
 import com.jogamp.opengl.demos.graph.FontSetDemos;
 import com.jogamp.opengl.demos.graph.MSAATool;
 import com.jogamp.opengl.math.FloatUtil;
-import com.jogamp.opengl.math.VectorUtil;
 import com.jogamp.opengl.util.GLReadBufferUtil;
 
 public class GPUUISceneTextAnim01 implements GLEventListener {
@@ -70,7 +63,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
     private boolean trace = false;
 
     private final float noAADPIThreshold;
-    private final Scene sceneUICntrl;
+    private final Scene scene;
 
     /** -1 == AUTO, TBD @ init(..) */
     private int renderModes;
@@ -78,9 +71,6 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
     private final Font font;
     private final Font fontFPS;
 
-    private final float sceneDist = 3000f;
-    private final float zNear = 0.1f, zFar = 7000f;
-
     // private final float relTop = 80f/100f;
     private final float relMiddle = 22f/100f;
     // private final float relLeft = 11f/100f;
@@ -135,23 +125,15 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
             throw new RuntimeException(ioe);
         }
 
-        {
-            final RenderState rs = RenderState.createRenderState(SVertex.factory());
-            final RegionRenderer renderer = RegionRenderer.create(rs, RegionRenderer.defaultBlendEnable, RegionRenderer.defaultBlendDisable);
-            rs.setHintMask(RenderState.BITHINT_GLOBAL_DEPTH_TEST_ENABLED);
-            // renderer = RegionRenderer.create(rs, null, null);
-
-            sceneUICntrl = new Scene(renderer, sceneDist, zNear, zFar);
-            // sceneUIController.setSampleCount(3); // easy on embedded devices w/ just 3 samples (default is 4)?
-        }
+        scene = new Scene();
         screenshot = new GLReadBufferUtil(false, false);
     }
 
     private void setupUI(final GLAutoDrawable drawable) {
         final float pixelSizeFixed = fontSizeFixedPVP * drawable.getSurfaceHeight();
-        jogampLabel = new Label(sceneUICntrl.getVertexFactory(), renderModes, font, pixelSizeFixed, jogamp);
+        jogampLabel = new Label(scene.getVertexFactory(), renderModes, font, pixelSizeFixed, jogamp);
         jogampLabel.addMouseListener(dragZoomRotateListener);
-        sceneUICntrl.addShape(jogampLabel);
+        scene.addShape(jogampLabel);
         jogampLabel.setEnabled(true);
 
         final float pixelSize10Pt = FontScale.toPixels(fontSizePt, dpiV);
@@ -163,9 +145,9 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
          * [FPS] Display 112.88889 dpi, fontSize 12.0 ppi -> pixelSize 15.679012
          */
         final float pixelSizeFPS = fontSizeFpsPVP * drawable.getSurfaceHeight();
-        fpsLabel = new Label(sceneUICntrl.getVertexFactory(), renderModes, fontFPS, pixelSizeFPS, "Nothing there yet");
+        fpsLabel = new Label(scene.getVertexFactory(), renderModes, fontFPS, pixelSizeFPS, "Nothing there yet");
         fpsLabel.addMouseListener(dragZoomRotateListener);
-        sceneUICntrl.addShape(fpsLabel);
+        scene.addShape(fpsLabel);
         fpsLabel.setEnabled(true);
         fpsLabel.setColor(0.1f, 0.1f, 0.1f, 1.0f);
         fpsLabel.move(0f, pixelSizeFPS * (fontFPS.getMetrics().getLineGap() - fontFPS.getMetrics().getDescent()), 0f);
@@ -196,7 +178,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
         if(drawable instanceof GLWindow) {
             System.err.println("GPUUISceneGLListener0A: init (1)");
             final GLWindow glw = (GLWindow) drawable;
-            sceneUICntrl.attachInputListenerTo(glw);
+            scene.attachInputListenerTo(glw);
         } else {
             System.err.println("GPUUISceneGLListener0A: init (0)");
         }
@@ -217,7 +199,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
         gl.glEnable(GL.GL_DEPTH_TEST);
         gl.glEnable(GL.GL_BLEND);
 
-        sceneUICntrl.init(drawable);
+        scene.init(drawable);
 
         final GLAnimatorControl a = drawable.getAnimator();
         if( null != a ) {
@@ -241,7 +223,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
         jogampLabel.setPosition(dxMiddleAbs, dyTopLabelAbs, dz);
         fpsLabel.move(0f, 0f, 0f);
 
-        sceneUICntrl.reshape(drawable, x, y, width, height);
+        scene.reshape(drawable, x, y, width, height);
 
         lastWidth = width;
         lastHeight = height;
@@ -252,7 +234,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
     public void dispose(final GLAutoDrawable drawable) {
         System.err.println("GPUUISceneGLListener0A: dispose");
 
-        sceneUICntrl.dispose(drawable); // disposes all registered UIShapes
+        scene.dispose(drawable); // disposes all registered UIShapes
 
         final GL2ES2 gl = drawable.getGL().getGL2ES2();
         screenshot.dispose(gl);
@@ -261,11 +243,11 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
     private int shotCount = 0;
 
     public void printScreen(final GL gl)  {
-        final RegionRenderer renderer = sceneUICntrl.getRenderer();
+        final RegionRenderer renderer = scene.getRenderer();
         final String modeS = Region.getRenderModeString(jogampLabel.getRenderModes());
         final String filename = String.format((Locale)null, "GraphUIDemo-shot%03d-%03dx%03d-S_%s_%02d.png",
                 shotCount++, renderer.getWidth(), renderer.getHeight(),
-                modeS, sceneUICntrl.getSampleCount());
+                modeS, scene.getSampleCount());
         gl.glFinish(); // just make sure rendering finished ..
         if(screenshot.readPixels(gl, false)) {
             screenshot.write(new File(filename));
@@ -278,7 +260,7 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
         if( fpsLabel.isEnabled() ) {
             final String text;
             if( null == actionText ) {
-                text = sceneUICntrl.getStatusText(drawable, renderModes, fpsLabel.getQuality(), dpiV);
+                text = scene.getStatusText(drawable, renderModes, fpsLabel.getQuality(), dpiV);
             } else if( null != drawable.getAnimator() ) {
                 text = Scene.getStatusText(drawable.getAnimator())+", "+actionText;
             } else {
@@ -288,15 +270,15 @@ public class GPUUISceneTextAnim01 implements GLEventListener {
                 System.err.println(text);
             }
         }
-        sceneUICntrl.display(drawable);
+        scene.display(drawable);
     }
 
     public void attachInputListenerTo(final GLWindow window) {
-        sceneUICntrl.attachInputListenerTo(window);
+        scene.attachInputListenerTo(window);
     }
 
     public void detachInputListenerFrom(final GLWindow window) {
-        sceneUICntrl.detachInputListenerFrom(window);
+        scene.detachInputListenerFrom(window);
     }
 
     /**
diff --git a/src/demos/com/jogamp/opengl/demos/graph/ui/UISceneDemo01.java b/src/demos/com/jogamp/opengl/demos/graph/ui/UISceneDemo01.java
index 7ac982a48..bc2353bb1 100644
--- a/src/demos/com/jogamp/opengl/demos/graph/ui/UISceneDemo01.java
+++ b/src/demos/com/jogamp/opengl/demos/graph/ui/UISceneDemo01.java
@@ -36,7 +36,6 @@ import com.jogamp.common.net.Uri;
 import com.jogamp.common.util.InterruptSource;
 import com.jogamp.graph.curve.Region;
 import com.jogamp.graph.curve.opengl.RegionRenderer;
-import com.jogamp.graph.curve.opengl.RenderState;
 import com.jogamp.graph.font.Font;
 import com.jogamp.graph.font.FontFactory;
 import com.jogamp.graph.font.FontSet;
@@ -44,7 +43,6 @@ import com.jogamp.graph.geom.SVertex;
 import com.jogamp.graph.geom.plane.AffineTransform;
 import com.jogamp.graph.ui.gl.Scene;
 import com.jogamp.graph.ui.gl.Shape;
-import com.jogamp.graph.ui.gl.Shape.EventInfo;
 import com.jogamp.graph.ui.gl.shapes.Button;
 import com.jogamp.graph.ui.gl.shapes.GLButton;
 import com.jogamp.graph.ui.gl.shapes.MediaButton;
@@ -62,10 +60,8 @@ import com.jogamp.opengl.GLCapabilities;
 import com.jogamp.opengl.GLEventListener;
 import com.jogamp.opengl.GLPipelineFactory;
 import com.jogamp.opengl.GLProfile;
-import com.jogamp.opengl.GLRunnable;
 import com.jogamp.opengl.demos.es2.GearsES2;
 import com.jogamp.opengl.demos.graph.MSAATool;
-import com.jogamp.opengl.fixedfunc.GLMatrixFunc;
 import com.jogamp.opengl.util.Animator;
 import com.jogamp.opengl.util.GLReadBufferUtil;
 import com.jogamp.opengl.util.PMVMatrix;
@@ -156,9 +152,6 @@ public class UISceneDemo01 implements GLEventListener {
 
     private final float[] position = new float[] {0,0,0};
 
-    private final float sceneDist = -1/5f;
-    private final float zNear = 0.1f, zFar = 7000f;
-
     boolean ignoreInput = false;
 
     protected final AffineTransform tempT1 = new AffineTransform();
@@ -253,11 +246,11 @@ public class UISceneDemo01 implements GLEventListener {
                 s.setTransform(pmv);
 
                 final float[] objPos = new float[3];
-                s.winToObjCoord(renderer, glWinX, glWinY, objPos);
+                s.winToObjCoord(pmv, viewport, glWinX, glWinY, objPos);
                 System.err.println("Button: Click: Win "+glWinX+"/"+glWinY+" -> Obj "+objPos[0]+"/"+objPos[1]+"/"+objPos[1]);
 
                 final int[] surfaceSize = new int[2];
-                s.getSurfaceSize(renderer, surfaceSize);
+                s.getSurfaceSize(pmv, viewport, surfaceSize);
                 System.err.println("Button: Size: Pixel "+surfaceSize[0]+" x "+surfaceSize[1]);
 
                 pmv.glPopMatrix();
@@ -314,6 +307,22 @@ public class UISceneDemo01 implements GLEventListener {
     @Override
     public void display(final GLAutoDrawable drawable) {
         scene.display(drawable);
+        if( once ) {
+            once = false;
+            final RegionRenderer renderer = scene.getRenderer();
+            final PMVMatrix pmv = renderer.getMatrix();
+            pmv.glPushMatrix();
+            shape.setTransform(pmv);
+
+            final int[] winPosSize = { 0, 0 };
+            System.err.println("draw.0: "+shape);
+            boolean ok = shape.getSurfaceSize(pmv, renderer.getViewport(), winPosSize);
+            System.err.println("draw.1: ok "+ok+", surfaceSize "+winPosSize[0]+" x "+winPosSize[1]);
+            ok = shape.objToWinCoord(pmv, renderer.getViewport(), shape.getPosition(), winPosSize);
+            System.err.println("draw.2: ok "+ok+",    winCoord "+winPosSize[0]+" x "+winPosSize[1]);
+
+            pmv.glPopMatrix();
+        }
     }
     static boolean once = true;
 
diff --git a/src/demos/com/jogamp/opengl/demos/graph/ui/UIShapeDemo01.java b/src/demos/com/jogamp/opengl/demos/graph/ui/UIShapeDemo01.java
index 81d657385..61f5a37ac 100644
--- a/src/demos/com/jogamp/opengl/demos/graph/ui/UIShapeDemo01.java
+++ b/src/demos/com/jogamp/opengl/demos/graph/ui/UIShapeDemo01.java
@@ -104,8 +104,10 @@ public class UIShapeDemo01 implements GLEventListener {
         final GLProfile glp = GLProfile.getGL2ES2();
         final GLCapabilities caps = new GLCapabilities(glp);
         caps.setAlphaBits(4);
-        caps.setSampleBuffers(true);
-        caps.setNumSamples(4);
+        if( false ) {
+            caps.setSampleBuffers(true);
+            caps.setNumSamples(4);
+        }
         System.out.println("Requested: " + caps);
 
         final GLWindow window = GLWindow.create(caps);
@@ -180,7 +182,9 @@ public class UIShapeDemo01 implements GLEventListener {
         this.trace = trace;
         this.screenshot = new GLReadBufferUtil(false, false);
 
-        button = new Button(SVertex.factory(), renderModes, font, "Click me!", 1/8f, 1/16f);
+        final float sz1_w = 1/8f;
+        final float sz2 = 1/20f;
+        button = new Button(SVertex.factory(), renderModes, font, "Click me!", sz1_w, sz1_w/2f);
         button.setLabelColor(0.0f,0.0f,0.0f);
         /** Button defaults !
                 button.setLabelColor(1.0f,1.0f,1.0f);
@@ -189,7 +193,7 @@ public class UIShapeDemo01 implements GLEventListener {
                 button.setSpacing(2.0f);
          */
         System.err.println(button);
-        crossHair = new CrossHair(SVertex.factory(), renderModes, 1/20f, 1/20f, 1/1000f);
+        crossHair = new CrossHair(SVertex.factory(), renderModes, sz2, sz2, 1/1000f);
         crossHair.setColor(0f,0f,1f,1f);
         crossHair.setEnabled(true);
     }
@@ -218,25 +222,37 @@ public class UIShapeDemo01 implements GLEventListener {
 
     @Override
     public void reshape(final GLAutoDrawable drawable, final int xstart, final int ystart, final int width, final int height) {
-        final GL2ES2 gl = drawable.getGL().getGL2ES2();
+        // final GL2ES2 gl = drawable.getGL().getGL2ES2();
+        // gl.glViewport(xstart, ystart, width, height);
 
         rRenderer.reshapePerspective(45.0f, width, height, zNear, zFar);
         // rRenderer.reshapeOrtho(width, height, zNear, zFar);
 
-        lastWidth = width;
-        lastHeight = height;
+        final PMVMatrix pmv = rRenderer.getMatrix();
+        pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+        pmv.glLoadIdentity();
+        pmv.glTranslatef(xTran, yTran, zTran);
+
         if( drawable instanceof Window ) {
             ((Window)drawable).setTitle(UIShapeDemo01.class.getSimpleName()+": "+drawable.getSurfaceWidth()+" x "+drawable.getSurfaceHeight());
         }
     }
-    float lastWidth = 0f, lastHeight = 0f;
 
     final int[] sampleCount = { 4 };
 
-    private void drawShape(final GL2ES2 gl, final PMVMatrix pmv, final RegionRenderer renderer, final Shape shape) {
+    private void drawShape(final GL2ES2 gl, final RegionRenderer renderer, final Shape shape) {
+        final PMVMatrix pmv = renderer.getMatrix();
         pmv.glPushMatrix();
         shape.setTransform(pmv);
         shape.drawShape(gl, renderer, sampleCount);
+        if( once ) {
+            final int[] winPosSize = { 0, 0 };
+            System.err.println("draw.0: "+shape);
+            boolean ok = shape.getSurfaceSize(pmv, renderer.getViewport(), winPosSize);
+            System.err.println("draw.1: ok "+ok+", surfaceSize "+winPosSize[0]+" x "+winPosSize[1]);
+            ok = shape.objToWinCoord(pmv, renderer.getViewport(), shape.getPosition(), winPosSize);
+            System.err.println("draw.2: ok "+ok+",    winCoord "+winPosSize[0]+" x "+winPosSize[1]);
+        }
         pmv.glPopMatrix();
     }
 
@@ -249,12 +265,9 @@ public class UIShapeDemo01 implements GLEventListener {
 
         final RegionRenderer renderer = getRegionRenderer();
         final PMVMatrix pmv = renderer.getMatrix();
-        pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
-        pmv.glLoadIdentity();
-        pmv.glTranslatef(xTran, yTran, zTran);
         renderer.enable(gl, true);
-        drawShape(gl, pmv, renderer, button);
-        drawShape(gl, pmv, renderer, crossHair);
+        drawShape(gl, renderer, button);
+        drawShape(gl, renderer, crossHair);
         {
             final String text = "Hello Origin.";
             final float full_width_o;
@@ -392,11 +405,11 @@ public class UIShapeDemo01 implements GLEventListener {
 
                         final float[] objPos = new float[3];
                         System.err.println("\n\nButton: "+button);
-                        button.winToObjCoord(renderer, glWinX, glWinY, objPos);
+                        button.winToObjCoord(pmv, viewport, glWinX, glWinY, objPos);
                         System.err.println("Button: Click: Win "+glWinX+"/"+glWinY+" -> Obj "+objPos[0]+"/"+objPos[1]+"/"+objPos[1]);
 
                         final int[] surfaceSize = new int[2];
-                        button.getSurfaceSize(renderer, surfaceSize);
+                        button.getSurfaceSize(pmv, viewport, surfaceSize);
                         System.err.println("Button: Size: Pixel "+surfaceSize[0]+" x "+surfaceSize[1]);
 
                         pmv.glPopMatrix();
@@ -408,16 +421,16 @@ public class UIShapeDemo01 implements GLEventListener {
                         final float[] objPosC = crossHair.getBounds().getCenter();
                         final int[] objWinPos = new int[2];
                         System.err.println("\n\nCrossHair: "+crossHair);
-                        if( crossHair.objToWinCoord(renderer, objPosC, objWinPos) ) {
+                        if( crossHair.objToWinCoord(pmv, viewport, objPosC, objWinPos) ) {
                             System.err.println("CrossHair: Obj: Obj "+objPosC[0]+"/"+objPosC[1]+"/"+objPosC[1]+" -> Win "+objWinPos[0]+"/"+objWinPos[1]);
                         }
 
                         final float[] objPos2 = new float[3];
-                        crossHair.winToObjCoord(renderer, objWinPos[0], objWinPos[1], objPos2);
+                        crossHair.winToObjCoord(pmv, viewport, objWinPos[0], objWinPos[1], objPos2);
                         System.err.println("CrossHair: Obj: Win "+objWinPos[0]+"/"+objWinPos[1]+" -> Obj "+objPos2[0]+"/"+objPos2[1]+"/"+objPos2[1]);
 
                         final float[] winObjPos = new float[3];
-                        if( crossHair.winToObjCoord(renderer, glWinX, glWinY, winObjPos) ) {
+                        if( crossHair.winToObjCoord(pmv, viewport, glWinX, glWinY, winObjPos) ) {
                             // final float[] translate = crossHair.getTranslate();
                             // final float[] objPosT = new float[] { objPosC[0]+translate[0], objPosC[1]+translate[1], objPosC[2]+translate[2] };
                             final float dx = winObjPos[0] - objPosC[0];
@@ -432,7 +445,7 @@ public class UIShapeDemo01 implements GLEventListener {
                         }
 
                         final int[] surfaceSize = new int[2];
-                        crossHair.getSurfaceSize(renderer, surfaceSize);
+                        crossHair.getSurfaceSize(pmv, viewport, surfaceSize);
                         System.err.println("CrossHair: Size: Pixel "+surfaceSize[0]+" x "+surfaceSize[1]);
 
                         pmv.glPopMatrix();
@@ -448,20 +461,14 @@ public class UIShapeDemo01 implements GLEventListener {
 
         @Override
         public void mouseMoved(final MouseEvent e) {
-            // TODO Auto-generated method stub
-
         }
 
         @Override
         public void mouseDragged(final MouseEvent e) {
-            // TODO Auto-generated method stub
-
         }
 
         @Override
         public void mouseWheelMoved(final MouseEvent e) {
-            // TODO Auto-generated method stub
-
         }
 
     }
diff --git a/src/demos/com/jogamp/opengl/demos/graph/ui/UITypeDemo01.java b/src/demos/com/jogamp/opengl/demos/graph/ui/UITypeDemo01.java
index 56962e110..41235077e 100644
--- a/src/demos/com/jogamp/opengl/demos/graph/ui/UITypeDemo01.java
+++ b/src/demos/com/jogamp/opengl/demos/graph/ui/UITypeDemo01.java
@@ -475,16 +475,16 @@ public class UITypeDemo01 implements GLEventListener {
                         final float[] objPosC = crossHair.getBounds().getCenter();
                         final int[] objWinPos = new int[2];
                         System.err.println("\n\nCrossHair: "+crossHair);
-                        if( crossHair.objToWinCoord(renderer, objPosC, objWinPos) ) {
+                        if( crossHair.objToWinCoord(pmv, viewport, objPosC, objWinPos) ) {
                             System.err.println("CrossHair: Obj: Obj "+objPosC[0]+"/"+objPosC[1]+"/"+objPosC[1]+" -> Win "+objWinPos[0]+"/"+objWinPos[1]);
                         }
 
                         final float[] objPos2 = new float[3];
-                        crossHair.winToObjCoord(renderer, objWinPos[0], objWinPos[1], objPos2);
+                        crossHair.winToObjCoord(pmv, viewport, objWinPos[0], objWinPos[1], objPos2);
                         System.err.println("CrossHair: Obj: Win "+objWinPos[0]+"/"+objWinPos[1]+" -> Obj "+objPos2[0]+"/"+objPos2[1]+"/"+objPos2[1]);
 
                         final float[] winObjPos = new float[3];
-                        if( crossHair.winToObjCoord(renderer, glWinX, glWinY, winObjPos) ) {
+                        if( crossHair.winToObjCoord(pmv, viewport, glWinX, glWinY, winObjPos) ) {
                             // final float[] translate = crossHair.getTranslate();
                             // final float[] objPosT = new float[] { objPosC[0]+translate[0], objPosC[1]+translate[1], objPosC[2]+translate[2] };
                             final float dx = winObjPos[0] - objPosC[0];
@@ -499,7 +499,7 @@ public class UITypeDemo01 implements GLEventListener {
                         }
 
                         final int[] surfaceSize = new int[2];
-                        crossHair.getSurfaceSize(renderer, surfaceSize);
+                        crossHair.getSurfaceSize(pmv, viewport, surfaceSize);
                         System.err.println("CrossHair: Size: Pixel "+surfaceSize[0]+" x "+surfaceSize[1]);
 
                         pmv.glPopMatrix();
diff --git a/src/graphui/classes/com/jogamp/graph/ui/gl/Scene.java b/src/graphui/classes/com/jogamp/graph/ui/gl/Scene.java
index 88e87b6cf..ac5258595 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/gl/Scene.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/gl/Scene.java
@@ -66,7 +66,7 @@ import com.jogamp.opengl.util.PMVMatrix;
  * </p>
  * @see Shape
  */
-public class Scene implements GLEventListener {
+public final class Scene implements GLEventListener {
     /** Default scene distance on z-axis to projection is -1/5f. */
     public static final float DEFAULT_SCENE_DIST = -1/5f;
     /** Default projection angle in degrees value is 45.0. */
@@ -208,7 +208,7 @@ public class Scene implements GLEventListener {
     public void removeShape(final Shape b) {
         shapes.remove(b);
     }
-    public final Shape getShapeByIdx(final int id) {
+    public Shape getShapeByIdx(final int id) {
         if( 0 > id ) {
             return null;
         }
@@ -303,19 +303,26 @@ public class Scene implements GLEventListener {
         renderer.enable(gl, false);
     }
 
+    /**
+     * Attempt to pick a {@link Shape} using the window coordinates and contained {@ling Shape}'s {@link AABBox} {@link Shape#getBounds() bounds}
+     * using a ray-intersection algorithm.
+     * <p>
+     * If {@link Shape} was found the given action is performed.
+     * </p>
+     * <p>
+     * Method performs on current thread and returns after probing every {@link Shape}.
+     * </p>
+     * @param glWinX window X coordinate, bottom-left origin
+     * @param glWinY window Y coordinate, bottom-left origin
+     * @param objPos storage for found object position in model-space of found {@link Shape}
+     * @param shape storage for found {@link Shape} or null
+     * @param runnable the action to perform if {@link Shape} was found
+     */
     public void pickShape(final int glWinX, final int glWinY, final float[] objPos, final Shape[] shape, final Runnable runnable) {
-        if( null == cDrawable ) {
-            return;
+        shape[0] = pickShapeImpl(glWinX, glWinY, objPos);
+        if( null != shape[0] ) {
+            runnable.run();
         }
-        cDrawable.invoke(false, new GLRunnable() {
-            @Override
-            public boolean run(final GLAutoDrawable drawable) {
-                shape[0] = pickShapeImpl(glWinX, glWinY, objPos);
-                if( null != shape[0] ) {
-                    runnable.run();
-                }
-                return true;
-            } } );
     }
     @SuppressWarnings({ "unchecked", "rawtypes" })
     private Shape pickShapeImpl(final int glWinX, final int glWinY, final float[] objPos) {
@@ -326,8 +333,8 @@ public class Scene implements GLEventListener {
             gl.glReadPixels( x, y, 1, 1, GL2ES2.GL_DEPTH_COMPONENT, GL.GL_FLOAT, winZRB);
             winZ1 = winZRB.get(0); // dir
         */
-        final PMVMatrix pmv = renderer.getMatrix();
-        pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+        final PMVMatrix pmv = new PMVMatrix();
+        setupMatrix(pmv);
 
         final Ray ray = new Ray();
 
@@ -370,26 +377,9 @@ public class Scene implements GLEventListener {
      * @param runnable action
      */
     public void winToObjCoord(final Shape shape, final int glWinX, final int glWinY, final float[] objPos, final Runnable runnable) {
-        if( null == cDrawable || null == shape ) {
-            return;
+        if( null != shape && shape.winToObjCoord(this, glWinX, glWinY, objPos) ) {
+            runnable.run();
         }
-        cDrawable.invoke(false, new GLRunnable() {
-            @Override
-            public boolean run(final GLAutoDrawable drawable) {
-                final boolean ok;
-                {
-                    final PMVMatrix pmv = renderer.getMatrix();
-                    pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
-                    pmv.glPushMatrix();
-                    shape.setTransform(pmv);
-                    ok = shape.winToObjCoord(renderer, glWinX, glWinY, objPos);
-                    pmv.glPopMatrix();
-                }
-                if( ok ) {
-                    runnable.run();
-                }
-                return true;
-            } } );
     }
 
     /**
@@ -450,17 +440,7 @@ public class Scene implements GLEventListener {
         final int[] viewport = { 0, 0, width, height };
 
         final PMVMatrix pmv = new PMVMatrix();
-        {
-            final float ratio = (float)width/(float)height;
-            pmv.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
-            pmv.glLoadIdentity();
-            pmv.gluPerspective(projAngle, ratio, zNear, zFar);
-        }
-        {
-            pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
-            pmv.glLoadIdentity();
-            pmv.glTranslatef(0f, 0f, sceneDist);
-        }
+        setupMatrix(pmv, width, height);
         {
             final float orthoDist = -sceneDist;
             final float[] obj00Coord = new float[3];
@@ -477,10 +457,10 @@ public class Scene implements GLEventListener {
     /**
      * Reshape scene {@link #setupMatrix(PMVMatrix, int, int)}.
      * <p>
-     * Projection will be setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
+     * {@link GLMatrixFunc#GL_PROJECTION} is setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
      * </p>
      * <p>
-     * Modelview is translated to given {@link #getProjSceneDist()}
+     * {@link GLMatrixFunc#GL_MODELVIEW} is translated to given {@link #getProjSceneDist()}
      * and and origin 0/0 becomes the bottom-left corner.
      * </p>
      * @see #setupMatrix(PMVMatrix, int, int)
@@ -493,7 +473,8 @@ public class Scene implements GLEventListener {
         renderer.reshapeNotify(x, y, width, height);
 
         final PMVMatrix pmv = renderer.getMatrix();
-        setupMatrix(pmv, width, height);
+        setupMatrix0(pmv, width, height);
+        pmv.glTranslatef(0f, 0f, sceneDist);
         {
             final float orthoDist = -sceneDist;
             final float[] obj00Coord = new float[3];
@@ -549,32 +530,43 @@ public class Scene implements GLEventListener {
     public final int[/*4*/] getViewport(final int[/*4*/] target) { return renderer.getViewport(target); }
 
     /** Borrows the current int[4] viewport w/o copying. It is set after initial {@link #reshape(GLAutoDrawable, int, int, int, int)}. */
-    public final int[/*4*/] getViewport() { return renderer.getViewport(); }
+    public int[/*4*/] getViewport() { return renderer.getViewport(); }
 
     /** Returns the {@link #getViewport()}'s width, set after initial {@link #reshape(GLAutoDrawable, int, int, int, int)}. */
     public int getWidth() { return renderer.getWidth(); }
     /** Returns the {@link #getViewport()}'s height, set after initial {@link #reshape(GLAutoDrawable, int, int, int, int)}. */
     public int getHeight() { return renderer.getHeight(); }
 
+    /** Borrow the current {@link PMVMatrix}. */
+    public PMVMatrix getMatrix() { return renderer.getMatrix(); }
+
     /** Translate current matrix to {@link #getBounds()}'s origin (minx/miny) and {@link #getProjSceneDist()}, a convenience method. */
-    public void translate(final PMVMatrix pmv) {
+    private void translate(final PMVMatrix pmv) {
         pmv.glTranslatef(planeBoxCtr.getMinX(), planeBoxCtr.getMinY(), sceneDist);
     }
 
     /**
-     * Setup {@link PMVMatrix} projection and modelview using explicit surface width and height before {@link #reshape(GLAutoDrawable, int, int, int, int)} happened, a convenience method.
+     * Setup {@link PMVMatrix} {@link GLMatrixFunc#GL_PROJECTION} and {@link GLMatrixFunc#GL_MODELVIEW}
+     * using explicit surface width and height before {@link #reshape(GLAutoDrawable, int, int, int, int)} happened, a convenience method.
      * <p>
-     * Projection will be setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
+     * {@link GLMatrixFunc#GL_PROJECTION} is setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
      * </p>
      * <p>
-     * Modelview is translated to given {@link #getProjSceneDist()}
+     * {@link GLMatrixFunc#GL_MODELVIEW} is translated to given {@link #getProjSceneDist()}
      * and and origin 0/0 becomes the bottom-left corner.
      * </p>
+     * <p>
+     * At the end of operations, the {@link GLMatrixFunc#GL_MODELVIEW} matrix is selected.
+     * </p>
      * @param pmv the {@link PMVMatrix} to setup
      * @param surface_width explicit surface width
      * @param surface_height explicit surface height
      */
     public void setupMatrix(final PMVMatrix pmv, final int surface_width, final int surface_height) {
+        setupMatrix0(pmv, surface_width, surface_height);
+        translate(pmv);
+    }
+    private void setupMatrix0(final PMVMatrix pmv, final int surface_width, final int surface_height) {
         final float ratio = (float)surface_width/(float)surface_height;
         pmv.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
         pmv.glLoadIdentity();
@@ -582,23 +574,26 @@ public class Scene implements GLEventListener {
 
         pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
         pmv.glLoadIdentity();
-        translate(pmv);
     }
 
     /**
-     * Setup {@link PMVMatrix} projection and modelview using implicit {@link #getViewport()} surface dimension after {@link #reshape(GLAutoDrawable, int, int, int, int)} happened, a convenience method.
+     * Setup {@link PMVMatrix} {@link GLMatrixFunc#GL_PROJECTION} and {@link GLMatrixFunc#GL_MODELVIEW}
+     * using implicit {@link #getViewport()} surface dimension after {@link #reshape(GLAutoDrawable, int, int, int, int)} happened, a convenience method.
      * <p>
-     * Projection will be setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
+     * {@link GLMatrixFunc#GL_PROJECTION} is setup using perspective {@link #getProjAngle()} with {@link #getProjZNear()} and {@link #getProjZFar()}.
      * </p>
      * <p>
-     * Modelview is translated to given {@link #getProjSceneDist()}
+     * {@link GLMatrixFunc#GL_MODELVIEW} is translated to given {@link #getProjSceneDist()}
      * and and origin 0/0 becomes the bottom-left corner.
      * </p>
+     * <p>
+     * At the end of operations, the {@link GLMatrixFunc#GL_MODELVIEW} matrix is selected.
+     * </p>
      * @param pmv the {@link PMVMatrix} to setup
      * @param surface_width explicit surface width
      * @param surface_height explicit surface height
      */
-    public void setup(final PMVMatrix pmv) {
+    public void setupMatrix(final PMVMatrix pmv) {
         setupMatrix(pmv, getWidth(), getHeight());
     }
 
@@ -651,11 +646,9 @@ public class Scene implements GLEventListener {
                     final int glWinY = getHeight() - e.getY() - 1;
                     final float[] objPos = new float[3];
                     final Shape shape = activeShape;
-                    winToObjCoord(shape, glWinX, glWinY, objPos, new Runnable() {
-                        @Override
-                        public void run() {
-                            shape.dispatchGestureEvent(renderer, gh, glWinX, glWinY, objPos);
-                        } } );
+                    winToObjCoord(shape, glWinX, glWinY, objPos, () -> {
+                        shape.dispatchGestureEvent(Scene.this, gh, glWinX, glWinY, objPos);
+                    });
                 }
             }
         }
@@ -684,14 +677,12 @@ public class Scene implements GLEventListener {
     final void dispatchMouseEventPickShape(final MouseEvent e, final int glWinX, final int glWinY, final boolean setActive) {
         final float[] objPos = new float[3];
         final Shape[] shape = { null };
-        pickShape(glWinX, glWinY, objPos, shape, new Runnable() {
-           @Override
-        public void run() {
+        pickShape(glWinX, glWinY, objPos, shape, () -> {
                if( setActive ) {
                    setActiveShape(shape[0]);
                }
                shape[0].dispatchMouseEvent(e, glWinX, glWinY, objPos);
-           } } );
+           } );
     }
     /**
      * Dispatch event to shape
@@ -702,11 +693,7 @@ public class Scene implements GLEventListener {
      */
     final void dispatchMouseEventForShape(final Shape shape, final MouseEvent e, final int glWinX, final int glWinY) {
         final float[] objPos = new float[3];
-        winToObjCoord(shape, glWinX, glWinY, objPos, new Runnable() {
-            @Override
-            public void run() {
-                shape.dispatchMouseEvent(e, glWinX, glWinY, objPos);
-            } } );
+        winToObjCoord(shape, glWinX, glWinY, objPos, () -> { shape.dispatchMouseEvent(e, glWinX, glWinY, objPos); });
     }
 
     private class SBCMouseListener implements MouseListener {
diff --git a/src/graphui/classes/com/jogamp/graph/ui/gl/Shape.java b/src/graphui/classes/com/jogamp/graph/ui/gl/Shape.java
index f8967e437..4f81f4ff7 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/gl/Shape.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/gl/Shape.java
@@ -235,9 +235,9 @@ public abstract class Shape {
      * <p>
      * No matrix operations (translate, scale, ..) are performed.
      * </p>
-     * @param gl
-     * @param renderer
-     * @param sampleCount
+     * @param gl the current GL object
+     * @param renderer the used {@link RegionRenderer}, also source of {@link RegionRenderer#getMatrix()} and {@link RegionRenderer#getViewport()}.
+     * @param sampleCount sample count if used by Graph renderModes
      */
     public void drawShape(final GL2ES2 gl, final RegionRenderer renderer, final int[] sampleCount) {
         final float r, g, b, a;
@@ -361,24 +361,25 @@ public abstract class Shape {
     }
 
     /**
-     * Retrieve window surface size of this shape
+     * Retrieve window surface size of this shape reusing a given setup {@link PMVMatrix}.
      * <p>
-     * The {@link RegionRenderer#getMatrix()} has to be setup properly for this object,
-     * i.e. reshape for {@link GLMatrixFunc#GL_PROJECTION} and {@link #setTransform(PMVMatrix)} for {@link GLMatrixFunc#GL_MODELVIEW}.
+     * The given {@link PMVMatrix} has to be setup properly for this object,
+     * i.e. its {@link GLMatrixFunc#GL_PROJECTION} and {@link GLMatrixFunc#GL_MODELVIEW} for the surrounding scene
+     * including this shape's {@link #setTransform(PMVMatrix)}.
      * </p>
-     * @param renderer source of viewport and {@link PMVMatrix}
+     * @param pmv well formed {@link PMVMatrix}, e.g. could have been setup via {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)} and {@link #setTransform(PMVMatrix)}.
+     * @param viewport the int[4] viewport
      * @param surfaceSize int[2] target surface size
      * @return true for successful gluProject(..) operation, otherwise false
+     * @see #getSurfaceSize(Scene, int[])
      */
-    public boolean getSurfaceSize(final RegionRenderer renderer, final int[/*2*/] surfaceSize) {
+    public boolean getSurfaceSize(final PMVMatrix pmv, final int[/*4*/] viewport, final int[/*2*/] surfaceSize) {
         boolean res = false;
-        final int[/*4*/] viewport = renderer.getViewport(new int[4]);
         // System.err.println("UIShape::getSurfaceSize.VP "+viewport[0]+"/"+viewport[1]+" "+viewport[2]+"x"+viewport[3]);
         final float[] winCoordHigh = new float[3];
         final float[] winCoordLow = new float[3];
         final float[] high = getBounds().getHigh();
         final float[] low = getBounds().getLow();
-        final PMVMatrix pmv = renderer.getMatrix();
 
         if( pmv.gluProject(high[0], high[1], high[2], viewport, 0, winCoordHigh, 0) ) {
             // System.err.printf("UIShape::surfaceSize.H: shape %d: obj [%f, %f, %f] -> win [%f, %f, %f]%n", getName(), high[0], high[1], high[2], winCoordHigh[0], winCoordHigh[1], winCoordHigh[2]);
@@ -394,22 +395,40 @@ public abstract class Shape {
     }
 
     /**
-     * Map given object coordinate relative to this shape to window coordinates
+     * Retrieve window surface size of this shape using a local {@link PMVMatrix}.
+     * <p>
+     * The {@link Scene} has be {@link Scene#reshape(com.jogamp.opengl.GLAutoDrawable, int, int, int, int) reshape(..)}ed once.
+     * </p>
+     * @param scene {@link Scene} source of viewport and local {@link PMVMatrix} {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)}.
+     * @param surfaceSize int[2] target surface size
+     * @return true for successful gluProject(..) operation, otherwise false
+     * @see #getSurfaceSize(PMVMatrix, int[], int[])
+     */
+    public boolean getSurfaceSize(final Scene scene, final int[/*2*/] surfaceSize) {
+        final PMVMatrix pmv = new PMVMatrix();
+        scene.setupMatrix(pmv);
+        setTransform(pmv);
+        return getSurfaceSize(pmv, scene.getViewport(), surfaceSize);
+    }
+
+    /**
+     * Map given object coordinate relative to this shape to window coordinates reusing a given setup {@link PMVMatrix}.
      * <p>
-     * The {@link RegionRenderer#getMatrix()} has to be setup properly for this object,
-     * i.e. reshape for {@link GLMatrixFunc#GL_PROJECTION} and {@link #setTransform(PMVMatrix)} for {@link GLMatrixFunc#GL_MODELVIEW}.
+     * The given {@link PMVMatrix} has to be setup properly for this object,
+     * i.e. its {@link GLMatrixFunc#GL_PROJECTION} and {@link GLMatrixFunc#GL_MODELVIEW} for the surrounding scene
+     * including this shape's {@link #setTransform(PMVMatrix)}.
      * </p>
-     * @param renderer source of viewport and {@link PMVMatrix}
+     * @param pmv well formed {@link PMVMatrix}, e.g. could have been setup via {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)} and {@link #setTransform(PMVMatrix)}.
+     * @param viewport the int[4] viewport
      * @param objPos float[3] object position relative to this shape's center
      * @param glWinPos int[2] target window position of objPos relative to this shape
      * @return true for successful gluProject(..) operation, otherwise false
+     * @see #objToWinCoord(Scene, float[], int[])
      */
-    public boolean objToWinCoord(final RegionRenderer renderer, final float[/*3*/] objPos, final int[/*2*/] glWinPos) {
+    public boolean objToWinCoord(final PMVMatrix pmv, final int[/*4*/] viewport, final float[/*3*/] objPos, final int[/*2*/] glWinPos) {
         boolean res = false;
-        final int[/*4*/] viewport = renderer.getViewport(new int[4]);
         // System.err.println("UIShape::objToWinCoordgetSurfaceSize.VP "+viewport[0]+"/"+viewport[1]+" "+viewport[2]+"x"+viewport[3]);
         final float[] winCoord = new float[3];
-        final PMVMatrix pmv = renderer.getMatrix();
 
         if( pmv.gluProject(objPos[0], objPos[1], objPos[2], viewport, 0, winCoord, 0) ) {
             // System.err.printf("UIShape::objToWinCoord.0: shape %d: obj [%f, %f, %f] -> win [%f, %f, %f]%n", getName(), objPos[0], objPos[1], objPos[2], winCoord[0], winCoord[1], winCoord[2]);
@@ -422,23 +441,43 @@ public abstract class Shape {
     }
 
     /**
-     * Map given gl-window-coordinates to object coordinates relative to this shape and its z-coordinate.
+     * Map given object coordinate relative to this shape to window coordinates using a local {@link PMVMatrix}.
      * <p>
-     * The {@link RegionRenderer#getMatrix()} has to be setup properly for this object,
-     * i.e. reshape for {@link GLMatrixFunc#GL_PROJECTION} and {@link #setTransform(PMVMatrix)} for {@link GLMatrixFunc#GL_MODELVIEW}.
+     * The {@link Scene} has be {@link Scene#reshape(com.jogamp.opengl.GLAutoDrawable, int, int, int, int) reshape(..)}ed once.
      * </p>
-     * @param renderer source of viewport and {@link PMVMatrix}
+     * @param scene {@link Scene} source of viewport and local {@link PMVMatrix} {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)}.
+     * @param objPos float[3] object position relative to this shape's center
+     * @param glWinPos int[2] target window position of objPos relative to this shape
+     * @return true for successful gluProject(..) operation, otherwise false
+     * @see #objToWinCoord(PMVMatrix, int[], float[], int[])
+     */
+    public boolean objToWinCoord(final Scene scene, final float[/*3*/] objPos, final int[/*2*/] glWinPos) {
+        final PMVMatrix pmv = new PMVMatrix();
+        scene.setupMatrix(pmv);
+        setTransform(pmv);
+        return this.objToWinCoord(pmv, scene.getViewport(), objPos, glWinPos);
+    }
+
+    /**
+     * Map given gl-window-coordinates to object coordinates relative to this shape and its z-coordinate
+     * reusing a given setup {@link PMVMatrix}.
+     * <p>
+     * The given {@link PMVMatrix} has to be setup properly for this object,
+     * i.e. its {@link GLMatrixFunc#GL_PROJECTION} and {@link GLMatrixFunc#GL_MODELVIEW} for the surrounding scene
+     * including this shape's {@link #setTransform(PMVMatrix)}.
+     * </p>
+     * @param pmv well formed {@link PMVMatrix}, e.g. could have been setup via {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)} and {@link #setTransform(PMVMatrix)}.
+     * @param viewport the int[4] viewport
      * @param glWinX in GL window coordinates, origin bottom-left
      * @param glWinY in GL window coordinates, origin bottom-left
      * @param objPos float[3] target object position of glWinX/glWinY relative to this shape
-     * @return @return true for successful gluProject(..) and gluUnProject(..) operations, otherwise false
+     * @return true for successful gluProject(..) and gluUnProject(..) operations, otherwise false
+     * @see #winToObjCoord(Scene, int, int, float[])
      */
-    public boolean winToObjCoord(final RegionRenderer renderer, final int glWinX, final int glWinY, final float[/*3*/] objPos) {
+    public boolean winToObjCoord(final PMVMatrix pmv, final int[/*4*/] viewport, final int glWinX, final int glWinY, final float[/*3*/] objPos) {
         boolean res = false;
         final float[] ctr = getBounds().getCenter();
-        final int[] viewport = renderer.getViewport(new int[4]);
         final float[] tmp = new float[3];
-        final PMVMatrix pmv = renderer.getMatrix();
 
         if( pmv.gluProject(ctr[0], ctr[1], ctr[2], viewport, 0, tmp, 0) ) {
             // System.err.printf("UIShape::winToObjCoord.0: shape %d: obj [%f, %f, %f] -> win [%f, %f, %f]%n", getName(), ctr[0], ctr[1], ctr[2], tmp[0], tmp[1], tmp[2]);
@@ -450,6 +489,26 @@ public abstract class Shape {
         return res;
     }
 
+    /**
+     * Map given gl-window-coordinates to object coordinates relative to this shape and its z-coordinate
+     * using a local {@link PMVMatrix}.
+     * <p>
+     * The {@link Scene} has be {@link Scene#reshape(com.jogamp.opengl.GLAutoDrawable, int, int, int, int) reshape(..)}ed once.
+     * </p>
+     * @param scene {@link Scene} source of viewport and local {@link PMVMatrix} {@link Scene#setupMatrix(PMVMatrix) setupMatrix(..)}.
+     * @param glWinX in GL window coordinates, origin bottom-left
+     * @param glWinY in GL window coordinates, origin bottom-left
+     * @param objPos float[3] target object position of glWinX/glWinY relative to this shape
+     * @return @return true for successful gluProject(..) and gluUnProject(..) operations, otherwise false
+     * @see #winToObjCoord(PMVMatrix, int[], int, int, float[])
+     */
+    public boolean winToObjCoord(final Scene scene, final int glWinX, final int glWinY, final float[/*3*/] objPos) {
+        final PMVMatrix pmv = new PMVMatrix();
+        scene.setupMatrix(pmv);
+        setTransform(pmv);
+        return this.winToObjCoord(pmv, scene.getViewport(), glWinX, glWinY, objPos);
+    }
+
     public float[] getColor() {
         return rgbaColor;
     }
@@ -826,31 +885,23 @@ public abstract class Shape {
      * @param glWinX x-position in OpenGL model space
      * @param glWinY y-position in OpenGL model space
      */
-    /* pp */ final void dispatchGestureEvent(final RegionRenderer renderer, final GestureEvent e, final int glWinX, final int glWinY, final float[] objPos) {
+    /* pp */ final void dispatchGestureEvent(final Scene scene, final GestureEvent e, final int glWinX, final int glWinY, final float[] objPos) {
         if( resizable && e instanceof PinchToZoomGesture.ZoomEvent ) {
             final PinchToZoomGesture.ZoomEvent ze = (PinchToZoomGesture.ZoomEvent) e;
             final float pixels = ze.getDelta() * ze.getScale(); //
             final float[] objPos2 = { 0f, 0f, 0f };
             final int winX2 = glWinX + Math.round(pixels);
-            final boolean ok;
-            {
-                final PMVMatrix pmv = renderer.getMatrix();
-                pmv.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
-                pmv.glPushMatrix();
-                setTransform(pmv);
-                ok = winToObjCoord(null, winX2, glWinY, objPos2);
-                pmv.glPopMatrix();
-            }
+            final boolean ok = winToObjCoord(scene, winX2, glWinY, objPos2);
             final float dx = objPos2[0];
             final float dy = objPos2[1];
             final float sx = scale[0] + ( dx/box.getWidth() ); // bottom-right
             final float sy = scale[1] + ( dy/box.getHeight() );
             if( DEBUG ) {
-                System.err.printf("DragZoom: resize %b, obj %4d/%4d, %.3f/%.3f/%.3f %.3f/%.3f/%.3f + %.3f/%.3f -> %.3f/%.3f%n",
-                        inResize, glWinX, glWinY, objPos[0], objPos[1], objPos[2], position[0], position[1], position[2],
+                System.err.printf("DragZoom: resize %b, ok %b, obj %4d/%4d, %.3f/%.3f/%.3f %.3f/%.3f/%.3f + %.3f/%.3f -> %.3f/%.3f%n",
+                        inResize, ok, glWinX, glWinY, objPos[0], objPos[1], objPos[2], position[0], position[1], position[2],
                         dx, dy, sx, sy);
             }
-            if( resize_sxy_min <= sx && sx <= resize_sxy_max && resize_sxy_min <= sy && sy <= resize_sxy_max ) {
+            if( ok && resize_sxy_min <= sx && sx <= resize_sxy_max && resize_sxy_min <= sy && sy <= resize_sxy_max ) {
                 if( DEBUG ) {
                     System.err.printf("PinchZoom: pixels %f, obj %4d/%4d, %.3f/%.3f/%.3f %.3f/%.3f/%.3f + %.3f/%.3f -> %.3f/%.3f%n",
                             pixels, glWinX, glWinY, objPos[0], objPos[1], objPos[2], position[0], position[1], position[2],
diff --git a/src/graphui/classes/com/jogamp/graph/ui/gl/shapes/GLButton.java b/src/graphui/classes/com/jogamp/graph/ui/gl/shapes/GLButton.java
index 7fc2e6f7e..77ac99861 100644
--- a/src/graphui/classes/com/jogamp/graph/ui/gl/shapes/GLButton.java
+++ b/src/graphui/classes/com/jogamp/graph/ui/gl/shapes/GLButton.java
@@ -94,7 +94,7 @@ public class GLButton extends TexSeqButton {
     @Override
     public void drawShape(final GL2ES2 gl, final RegionRenderer renderer, final int[] sampleCount) {
         final int[/*2*/] surfaceSize = new int[2];
-        final boolean got_sz = getSurfaceSize(renderer, surfaceSize) && 0 < surfaceSize[0] && 0 < surfaceSize[1];
+        final boolean got_sz = getSurfaceSize(renderer.getMatrix(), renderer.getViewport(), surfaceSize) && 0 < surfaceSize[0] && 0 < surfaceSize[1];
 
         if( null == fboGLAD ) {
             final ImageSequence imgSeq = (ImageSequence)texSeq;