Bug 801: Cleanup shader-program location/data update ; Add COLORTEXTURE + TextureSequence to Region (Demo: TextureButton)

Cleanup shader-program location/data update

- GLUniformData:
  - Allow lazy data setup, as used for
    RenderState.ProgramLocal, see below

- RenderState
  - Separate data (pmv, weight, colorStatic) from
    program-local uniforms -> add class ProgramLocal.
    Reduces uniform location lookups, since
    ProgramLocal is bound to Region impl.

  - ProgramLocal.update(..) needs to write uniform data always,
    since data is being used in multiple programs!

  - No 'dirty' tracking possible, removed - see above.

- RegionRenderer
  - Fix shader-selection: 2-pass programs differ from 1-pass!
  - No shader-setup at init

+++

Add COLORTEXTURE + TextureSequence to Region
  - Create color-texture coords in vertex-shader via region's bounding box (pass-1)
  - Use color-texture unit in pass-1 if enabled (own shader program)
  - Use TextureSequence in Region impl. providing all required data (unit + texture-name)
  - Demo: TextureButton (a UIShape)

17 files changed, 514 insertions, 225 deletions

diff --git a/src/jogl/classes/com/jogamp/graph/curve/Region.java b/src/jogl/classes/com/jogamp/graph/curve/Region.java
index 7edd2f572..230fa324d 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/Region.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/Region.java
@@ -37,6 +37,7 @@ import com.jogamp.graph.geom.Triangle;
 import com.jogamp.graph.geom.Vertex;
 import com.jogamp.opengl.math.geom.AABBox;
 import com.jogamp.opengl.math.geom.Frustum;
+import com.jogamp.opengl.util.texture.TextureSequence;
 
 /**
  * Abstract Outline shape representation define the method an OutlineShape(s)
@@ -102,7 +103,7 @@ public abstract class Region {
     /** Default maximum {@link #getQuality() quality}, {@value}. */
     public static final int MAX_QUALITY  = 1;
 
-    public static final int TWO_PASS_DEFAULT_TEXTURE_UNIT = 0;
+    public static final int DEFAULT_TWO_PASS_TEXTURE_UNIT = 0;
 
     private final int renderModes;
     private int quality;
@@ -175,7 +176,7 @@ public abstract class Region {
     protected abstract void pushIndex(int idx);
 
     /**
-     * Return bit-field of render modes, see {@link #create(int)}.
+     * Return bit-field of render modes, see {@link #create(int, TextureSequence)}.
      */
     public final int getRenderModes() { return renderModes; }
 
@@ -369,19 +370,33 @@ public abstract class Region {
         return box;
     }
 
-    /** Check if this region is dirty. A region is marked dirty when new
-     * Vertices, Triangles, and or Lines are added after a call to update()
+    /**
+     * Check if this region is dirty. A region is marked dirty when new
+     * Vertices, Triangles, and or Lines are added after a call to update().
+     * <p>
+     * A region is also dirty if other render attributes or parameters are changed!
+     * </p>
      *
      * @return true if region is Dirty, false otherwise
      *
-     * @see update(GL2ES2) */
+     * @see update(GL2ES2)
+     */
     public final boolean isDirty() {
         return dirty;
     }
 
+    /**
+     * See {@link #isDirty()}.
+     */
     protected final void setDirty(boolean v) {
         dirty = v;
     }
+    /**
+     * See {@link #isDirty()}.
+     */
+    public final void markDirty() {
+        dirty = true;
+    }
 
     public String toString() {
         return "Region["+getRenderModeString(this.renderModes)+", q "+quality+", dirty "+dirty+", vertices "+numVertices+", box "+box+"]";
diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/GLRegion.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/GLRegion.java
index 9505f2a9d..3c6045a1f 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/GLRegion.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/GLRegion.java
@@ -35,6 +35,7 @@ import jogamp.graph.curve.opengl.VBORegion2PVBAAES2;
 import jogamp.graph.curve.opengl.VBORegionSPES2;

 

 import com.jogamp.opengl.util.PMVMatrix;

+import com.jogamp.opengl.util.texture.TextureSequence;

 import com.jogamp.graph.curve.Region;

 

 /** A GLRegion is the OGL binding of one or more OutlineShapes

@@ -53,23 +54,31 @@ public abstract class GLRegion extends Region {
      * Create a GLRegion using the passed render mode

      *

      * <p> In case {@link Region#VBAA_RENDERING_BIT} is being requested the default texture unit

-     * {@link Region#TWO_PASS_DEFAULT_TEXTURE_UNIT} is being used.</p>

-     *

-     * @param rs the RenderState to be used

+     * {@link Region#DEFAULT_TWO_PASS_TEXTURE_UNIT} is being used.</p>

      * @param renderModes bit-field of modes, e.g. {@link Region#VARWEIGHT_RENDERING_BIT}, {@link Region#VBAA_RENDERING_BIT}

+     * @param colorTexSeq TODO

+     * @param rs the RenderState to be used

      */

-    public static GLRegion create(int renderModes) {

+    public static GLRegion create(int renderModes, final TextureSequence colorTexSeq) {

+        if( null != colorTexSeq ) {

+            renderModes |= Region.COLORTEXTURE_RENDERING_BIT;

+        } else if( Region.hasColorTexture(renderModes) ) {

+            throw new IllegalArgumentException("COLORTEXTURE_RENDERING_BIT set but null TextureSequence");

+        }

         if( isVBAA(renderModes) ) {

-            return new VBORegion2PVBAAES2(renderModes, Region.TWO_PASS_DEFAULT_TEXTURE_UNIT);

+            return new VBORegion2PVBAAES2(renderModes, colorTexSeq, Region.DEFAULT_TWO_PASS_TEXTURE_UNIT);

         } else if( isMSAA(renderModes) ) {

-            return new VBORegion2PMSAAES2(renderModes, Region.TWO_PASS_DEFAULT_TEXTURE_UNIT);

+            return new VBORegion2PMSAAES2(renderModes, colorTexSeq, Region.DEFAULT_TWO_PASS_TEXTURE_UNIT);

         } else {

-            return new VBORegionSPES2(renderModes);

+            return new VBORegionSPES2(renderModes, colorTexSeq);

         }

     }

 

-    protected GLRegion(int renderModes) {

+    protected final TextureSequence colorTexSeq;

+

+    protected GLRegion(int renderModes, TextureSequence colorTexSeq) {

         super(renderModes);

+        this.colorTexSeq = colorTexSeq;

     }

 

     /**

diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
index ade6098e1..8724baff8 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/RegionRenderer.java
@@ -139,9 +139,6 @@ public class RegionRenderer {
     public final int getHeight() { return vp_height; }
 
     public final PMVMatrix getMatrix() { return rs.getMatrix(); }
-    public final PMVMatrix getMatrixMutable() { return rs.getMatrixMutable(); }
-    public final void setMatrixDirty() { rs.setMatrixDirty(); }
-    public final boolean isMatrixDirty() { return rs.isMatrixDirty(); }
 
     //////////////////////////////////////
 
@@ -190,12 +187,6 @@ public class RegionRenderer {
         if( null != enableCallback ) {
             enableCallback.run(gl, this);
         }
-
-        useShaderProgram(gl, renderModes, true, 0, 0);
-        initialized = rs.update(gl, true, renderModes, true);
-        if(!initialized) {
-            throw new GLException("Shader initialization failed");
-        }
     }
 
     public final void destroy(GL2ES2 gl) {
@@ -247,14 +238,13 @@ public class RegionRenderer {
     public final void reshapeNotify(int width, int height) {
         this.vp_width = width;
         this.vp_height = height;
-        rs.setMatrixDirty();
     }
 
     public final void reshapePerspective(float angle, int width, int height, float near, float far) {
         this.vp_width = width;
         this.vp_height = height;
         final float ratio = (float)width/(float)height;
-        final PMVMatrix p = rs.getMatrixMutable();
+        final PMVMatrix p = rs.getMatrix();
         p.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
         p.glLoadIdentity();
         p.gluPerspective(angle, ratio, near, far);
@@ -263,7 +253,7 @@ public class RegionRenderer {
     public final void reshapeOrtho(int width, int height, float near, float far) {
         this.vp_width = width;
         this.vp_height = height;
-        final PMVMatrix p = rs.getMatrixMutable();
+        final PMVMatrix p = rs.getMatrix();
         p.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
         p.glLoadIdentity();
         p.glOrthof(0, width, 0, height, near, far);
@@ -368,6 +358,7 @@ public class RegionRenderer {
     private final IntObjectHashMap shaderPrograms = new IntObjectHashMap();
 
     private static final int HIGH_MASK = Region.COLORCHANNEL_RENDERING_BIT | Region.COLORTEXTURE_RENDERING_BIT;
+    private static final int TWO_PASS_BIT = 1 <<  31;
 
     /**
      * @param gl
@@ -382,7 +373,8 @@ public class RegionRenderer {
                                           final boolean pass1, final int quality, final int sampleCount) {
         final ShaderModeSelector1 sel1 = pass1 ? ShaderModeSelector1.selectPass1(renderModes) :
                                                  ShaderModeSelector1.selectPass2(renderModes, quality, sampleCount);
-        final int shaderKey = sel1.ordinal() | ( HIGH_MASK & renderModes );
+        final boolean isTwoPass = Region.isTwoPass( renderModes );
+        final int shaderKey = sel1.ordinal() | ( HIGH_MASK & renderModes ) | ( isTwoPass ? TWO_PASS_BIT : 0 );
 
         /**
         if(DEBUG) {
@@ -395,14 +387,16 @@ public class RegionRenderer {
             final boolean spChanged = getRenderState().setShaderProgram(gl, sp);
             if(DEBUG) {
                 if( spChanged ) {
-                    System.err.printf("RegionRendererImpl01.useShaderProgram.X1: GOT renderModes %s, sel1 %s, key 0x%X (changed)%n", Region.getRenderModeString(renderModes), sel1, shaderKey);
+                    System.err.printf("RegionRendererImpl01.useShaderProgram.X1: GOT renderModes %s, sel1 %s, key 0x%X -> sp %d / %d (changed)%n", Region.getRenderModeString(renderModes), sel1, shaderKey, sp.program(), sp.id());
+                } else {
+                    System.err.printf("RegionRendererImpl01.useShaderProgram.X1: GOT renderModes %s, sel1 %s, key 0x%X -> sp %d / %d (keep)%n", Region.getRenderModeString(renderModes), sel1, shaderKey, sp.program(), sp.id());
                 }
             }
             return spChanged;
         }
         final String versionedBaseName = getVersionedShaderName();
         final String vertexShaderName;
-        if( Region.isTwoPass( renderModes ) ) {
+        if( isTwoPass ) {
             vertexShaderName = versionedBaseName+"-pass"+(pass1?1:2);
         } else {
             vertexShaderName = versionedBaseName+"-single";
@@ -453,6 +447,7 @@ public class RegionRenderer {
         if( !sp.init(gl) ) {
             throw new GLException("RegionRenderer: Couldn't init program: "+sp);
         }
+
         if( !sp.link(gl, System.err) ) {
             throw new GLException("could not link program: "+sp);
         }
@@ -460,8 +455,8 @@ public class RegionRenderer {
 
         shaderPrograms.put(shaderKey, sp);
         if(DEBUG) {
-            System.err.printf("RegionRendererImpl01.useShaderProgram.X1: PUT renderModes %s, sel1 %s, key 0x%X -> SP %s (changed)%n",
-                    Region.getRenderModeString(renderModes), sel1, shaderKey, sp);
+            System.err.printf("RegionRendererImpl01.useShaderProgram.X1: PUT renderModes %s, sel1 %s, key 0x%X -> sp %d / %d (changed)%n",
+                    Region.getRenderModeString(renderModes), sel1, shaderKey, sp.program(), sp.id());
         }
         return true;
     }
diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/RenderState.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/RenderState.java
index c7083a41b..818526cd7 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/RenderState.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/RenderState.java
@@ -31,6 +31,7 @@ import java.nio.FloatBuffer;
 
 import javax.media.opengl.GL;
 import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLException;
 import javax.media.opengl.GLUniformData;
 
 import jogamp.graph.curve.opengl.shader.UniformNames;
@@ -78,25 +79,109 @@ public class RenderState {
 
     private final Vertex.Factory<? extends Vertex> vertexFactory;
     private final PMVMatrix pmvMatrix;
-    private final GLUniformData gcu_PMVMatrix01;
-    private final GLUniformData gcu_Weight;
-    private final GLUniformData gcu_ColorStatic;
-    private boolean gcu_PMVMatrix01_dirty = true;
-    private boolean gcu_Weight_dirty = true;
-    private boolean gcu_ColorStatic_dirty = true;
+    private final float[] weight;
+    private final FloatBuffer weightBuffer;
+    private final float[] colorStatic;
+    private final FloatBuffer colorStaticBuffer;
     private ShaderProgram sp;
     private int hintBitfield;
 
+    private final int id;
+    private static synchronized int getNextID() {
+        return nextID++;
+    }
+    private static int nextID = 1;
+
+    /**
+     * Representation of {@link RenderState} data for one {@link ShaderProgram}
+     * as {@link GLUniformData}.
+     * <p>
+     * FIXME: Utilize 'ARB_Uniform_Buffer_Object' where available!
+     * </p>
+     */
+    public static class ProgramLocal {
+        public final GLUniformData gcu_PMVMatrix01;
+        public final GLUniformData gcu_Weight;
+        public final GLUniformData gcu_ColorStatic;
+        private int rsId = -1;
+
+        public ProgramLocal() {
+            gcu_PMVMatrix01 = GLUniformData.creatEmptyMatrix(UniformNames.gcu_PMVMatrix01, 4, 4);
+            gcu_Weight = GLUniformData.creatEmptyVector(UniformNames.gcu_Weight, 1);
+            gcu_ColorStatic = GLUniformData.creatEmptyVector(UniformNames.gcu_ColorStatic, 4);
+        }
+
+        public final int getRenderStateId() { return rsId; }
+
+        /**
+         * <p>
+         * Since {@link RenderState} data is being used in multiple
+         * {@link ShaderProgram}s the data must always be written.
+         * </p>
+         * @param gl
+         * @param updateLocation
+         * @param renderModes
+         * @param throwOnError TODO
+         * @return true if no error occurred, i.e. all locations found, otherwise false.
+         */
+        public final boolean update(final GL2ES2 gl, final RenderState rs, final boolean updateLocation, final int renderModes, final boolean pass1, final boolean throwOnError) {
+            if( rs.id() != rsId ) {
+                gcu_PMVMatrix01.setData(rs.pmvMatrix.glGetPMvMatrixf());
+                gcu_Weight.setData(rs.weightBuffer);
+                gcu_ColorStatic.setData(rs.colorStaticBuffer);
+                rsId = rs.id();
+            }
+            boolean res = true;
+            if( null != rs.sp && rs.sp.inUse() ) {
+                if( !Region.isTwoPass(renderModes) || !pass1 ) {
+                    final boolean r0 = rs.updateUniformDataLoc(gl, updateLocation, true, gcu_PMVMatrix01, throwOnError);
+                    res = res && r0;
+                }
+                if( pass1 ) {
+                    if( Region.hasVariableWeight( renderModes ) ) {
+                        final boolean r0 = rs.updateUniformDataLoc(gl, updateLocation, true, gcu_Weight, throwOnError);
+                        res = res && r0;
+                    }
+                    {
+                        final boolean r0 = rs.updateUniformDataLoc(gl, updateLocation, true, gcu_ColorStatic, throwOnError);
+                        res = res && r0;
+                    }
+                }
+            }
+            return res;
+        }
+
+        public StringBuilder toString(StringBuilder sb, boolean alsoUnlocated) {
+            if(null==sb) {
+                sb = new StringBuilder();
+            }
+            sb.append("ProgramLocal[rsID ").append(rsId).append(Platform.NEWLINE);
+            // pmvMatrix.toString(sb, "%.2f");
+            sb.append(gcu_PMVMatrix01).append(", ").append(Platform.NEWLINE);
+            sb.append(gcu_ColorStatic).append(", ");
+            sb.append(gcu_Weight).append("]");
+            return sb;
+        }
+
+        @Override
+        public String toString() {
+            return toString(null, false).toString();
+        }
+    }
+
     protected RenderState(Vertex.Factory<? extends Vertex> vertexFactory, PMVMatrix pmvMatrix) {
+        this.id = getNextID();
         this.sp = null;
         this.vertexFactory = vertexFactory;
         this.pmvMatrix = null != pmvMatrix ? pmvMatrix : new PMVMatrix();
-        this.gcu_PMVMatrix01 = new GLUniformData(UniformNames.gcu_PMVMatrix01, 4, 4, this.pmvMatrix.glGetPMvMatrixf());
-        this.gcu_Weight = new GLUniformData(UniformNames.gcu_Weight, 1.0f);
-        this.gcu_ColorStatic = new GLUniformData(UniformNames.gcu_ColorStatic, 4, FloatBuffer.allocate(4));
+        this.weight = new float[1];
+        this.weightBuffer = FloatBuffer.wrap(weight);
+        this.colorStatic = new float[4];
+        this.colorStaticBuffer = FloatBuffer.wrap(colorStatic);
         this.hintBitfield = 0;
     }
 
+    public final int id() { return id; }
     public final ShaderProgram getShaderProgram() { return sp; }
     public final boolean isShaderProgramInUse() { return null != sp ? sp.inUse() : false; }
 
@@ -124,42 +209,28 @@ public class RenderState {
     public final Vertex.Factory<? extends Vertex> getVertexFactory() { return vertexFactory; }
 
     public final PMVMatrix getMatrix() { return pmvMatrix; }
-    public final PMVMatrix getMatrixMutable() {
-        gcu_PMVMatrix01_dirty = true;
-        return pmvMatrix;
-    }
-    public final GLUniformData getMatrixUniform() { return gcu_PMVMatrix01; }
-    public final void setMatrixDirty() { gcu_PMVMatrix01_dirty = true; }
-    public final boolean isMatrixDirty() { return gcu_PMVMatrix01_dirty;}
 
     public static boolean isWeightValid(float v) {
         return 0.0f <= v && v <= 1.9f ;
     }
-    public final float getWeight() { return gcu_Weight.floatValue(); }
+    public final float getWeight() { return weight[0]; }
     public final void setWeight(float v) {
         if( !isWeightValid(v) ) {
              throw new IllegalArgumentException("Weight out of range");
         }
-        gcu_Weight_dirty = true;
-        gcu_Weight.setData(v);
+        weight[0] = v;
     }
 
 
     public final float[] getColorStatic(float[] rgbaColor) {
-        FloatBuffer fb = (FloatBuffer) gcu_ColorStatic.getBuffer();
-        rgbaColor[0] = fb.get(0);
-        rgbaColor[1] = fb.get(1);
-        rgbaColor[2] = fb.get(2);
-        rgbaColor[3] = fb.get(3);
+        System.arraycopy(colorStatic, 0, rgbaColor, 0, 4);
         return rgbaColor;
     }
     public final void setColorStatic(float r, float g, float b, float a){
-        final FloatBuffer fb = (FloatBuffer) gcu_ColorStatic.getBuffer();
-        fb.put(0, r);
-        fb.put(1, g);
-        fb.put(2, b);
-        fb.put(3, a);
-        gcu_ColorStatic_dirty = true;
+        colorStatic[0] = r;
+        colorStatic[1] = g;
+        colorStatic[2] = b;
+        colorStatic[3] = a;
     }
 
 
@@ -167,43 +238,17 @@ public class RenderState {
      *
      * @param gl
      * @param updateLocation
-     * @param renderModes
-     * @return true if no error occurred, i.e. all locations found, otherwise false.
-     */
-    public final boolean update(GL2ES2 gl, final boolean updateLocation, final int renderModes, final boolean pass1) {
-        boolean res = true;
-        if( null != sp && sp.inUse() ) {
-            if( ( !Region.isTwoPass(renderModes) || !pass1 ) && ( gcu_PMVMatrix01_dirty || updateLocation ) ) {
-                final boolean r0 = updateUniformDataLoc(gl, updateLocation, gcu_PMVMatrix01_dirty, gcu_PMVMatrix01);
-                res = res && r0;
-                gcu_PMVMatrix01_dirty = !r0;
-            }
-            if( pass1 ) {
-                if( Region.hasVariableWeight( renderModes ) && ( gcu_Weight_dirty || updateLocation ) ) {
-                    final boolean r0 = updateUniformDataLoc(gl, updateLocation, gcu_Weight_dirty, gcu_Weight);
-                    res = res && r0;
-                    gcu_Weight_dirty = !r0;
-                }
-                if( gcu_ColorStatic_dirty || updateLocation )  {
-                    final boolean r0 = updateUniformDataLoc(gl, updateLocation, gcu_ColorStatic_dirty, gcu_ColorStatic);
-                    res = res && r0;
-                    gcu_ColorStatic_dirty = false;
-                }
-            }
-        }
-        return res;
-    }
-
-    /**
-     *
-     * @param gl
-     * @param updateLocation
      * @param data
+     * @param throwOnError TODO
      * @return true if no error occured, i.e. all locations found, otherwise false.
      */
-    public final boolean updateUniformLoc(final GL2ES2 gl, final boolean updateLocation, final GLUniformData data) {
+    public final boolean updateUniformLoc(final GL2ES2 gl, final boolean updateLocation, final GLUniformData data, final boolean throwOnError) {
         if( updateLocation || 0 > data.getLocation() ) {
-            return 0 <= data.setLocation(gl, sp.program());
+            final boolean ok = 0 <= data.setLocation(gl, sp.program());
+            if( throwOnError && !ok ) {
+                throw new GLException("Could not locate "+data);
+            }
+            return ok;
         } else {
             return true;
         }
@@ -215,12 +260,16 @@ public class RenderState {
      * @param updateLocation
      * @param updateData TODO
      * @param data
+     * @param throwOnError TODO
      * @return true if no error occured, i.e. all locations found, otherwise false.
      */
-    public final boolean updateUniformDataLoc(final GL2ES2 gl, boolean updateLocation, boolean updateData, final GLUniformData data) {
+    public final boolean updateUniformDataLoc(final GL2ES2 gl, boolean updateLocation, boolean updateData, final GLUniformData data, final boolean throwOnError) {
         updateLocation = updateLocation || 0 > data.getLocation();
         if( updateLocation ) {
             updateData = 0 <= data.setLocation(gl, sp.program());
+            if( throwOnError && !updateData ) {
+                throw new GLException("Could not locate "+data);
+            }
         }
         if( updateData ){
             gl.glUniform(data);
@@ -233,11 +282,16 @@ public class RenderState {
     /**
      * @param gl
      * @param data
+     * @param throwOnError TODO
      * @return true if no error occured, i.e. all locations found, otherwise false.
      */
-    public final boolean updateAttributeLoc(final GL2ES2 gl, final boolean updateLocation, final GLArrayDataServer data) {
+    public final boolean updateAttributeLoc(final GL2ES2 gl, final boolean updateLocation, final GLArrayDataServer data, boolean throwOnError) {
         if( updateLocation || 0 > data.getLocation() ) {
-            return 0 <= data.setLocation(gl, sp.program());
+            final boolean ok = 0 <= data.setLocation(gl, sp.program());
+            if( throwOnError && !ok ) {
+                throw new GLException("Could not locate "+data);
+            }
+            return ok;
         } else {
             return true;
         }
@@ -274,21 +328,8 @@ public class RenderState {
         return false;
     }
 
-    public StringBuilder toString(StringBuilder sb, boolean alsoUnlocated) {
-        if(null==sb) {
-            sb = new StringBuilder();
-        }
-        sb.append("RenderState[").append(sp).append(Platform.NEWLINE);
-        // pmvMatrix.toString(sb, "%.2f");
-        sb.append(", dirty[pmv "+gcu_PMVMatrix01_dirty+", color "+gcu_ColorStatic_dirty+", weight "+gcu_Weight_dirty+"], ").append(Platform.NEWLINE);
-        sb.append(gcu_PMVMatrix01).append(", ").append(Platform.NEWLINE);
-        sb.append(gcu_ColorStatic).append(", ");
-        sb.append(gcu_Weight).append("]");
-        return sb;
-    }
-
     @Override
     public String toString() {
-        return toString(null, false).toString();
+        return "RenderState["+sp+"]";
     }
 }
diff --git a/src/jogl/classes/com/jogamp/graph/curve/opengl/TextRegionUtil.java b/src/jogl/classes/com/jogamp/graph/curve/opengl/TextRegionUtil.java
index f944843e9..aadbecc91 100644
--- a/src/jogl/classes/com/jogamp/graph/curve/opengl/TextRegionUtil.java
+++ b/src/jogl/classes/com/jogamp/graph/curve/opengl/TextRegionUtil.java
@@ -178,7 +178,7 @@ public class TextRegionUtil {
         final int special = 0;
         GLRegion region = getCachedRegion(font, str, pixelSize, special);
         if(null == region) {
-            region = GLRegion.create(renderModes);
+            region = GLRegion.create(renderModes, null);
             addStringToRegion(region, renderer.getRenderState().getVertexFactory(), font, pixelSize, str, rgbaColor, tempT1, tempT2);
             addCachedRegion(gl, font, str, pixelSize, special, region);
         }
@@ -213,7 +213,7 @@ public class TextRegionUtil {
         if(!renderer.isInitialized()){
             throw new GLException("TextRendererImpl01: not initialized!");
         }
-        final GLRegion region = GLRegion.create(renderModes);
+        final GLRegion region = GLRegion.create(renderModes, null);
         addStringToRegion(region, renderer.getRenderState().getVertexFactory(), font, pixelSize, str, rgbaColor, temp1, temp2);
         region.draw(gl, renderer, sampleCount);
         region.destroy(gl);
diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
index 6a4b13dfb..3ac17b0c5 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderProgram.java
@@ -56,7 +56,7 @@ public class ShaderProgram {
     /**
      * returns the uniq shader id as an integer
      */
-    public int        id() { return id; }
+    public int id() { return id; }
 
     /**
      * Detaches all shader codes and deletes the program.
@@ -321,7 +321,7 @@ public class ShaderProgram {
     private int shaderProgram = 0; // non zero is valid!
     private final HashSet<ShaderCode> allShaderCode = new HashSet<ShaderCode>();
     private final HashSet<ShaderCode> attachedShaderCode = new HashSet<ShaderCode>();
-    private int id = -1;
+    private final int id;
 
     private static synchronized int getNextID() {
         return nextID++;
diff --git a/src/jogl/classes/javax/media/opengl/GLUniformData.java b/src/jogl/classes/javax/media/opengl/GLUniformData.java
index 412bfb0a9..fac8b7a1f 100644
--- a/src/jogl/classes/javax/media/opengl/GLUniformData.java
+++ b/src/jogl/classes/javax/media/opengl/GLUniformData.java
@@ -15,7 +15,7 @@ public class GLUniformData {
      *
      */
     public GLUniformData(String name, int val) {
-        init(name, 1, new Integer(val));
+        initScalar(name, 1, new Integer(val));
     }
 
     /**
@@ -25,7 +25,7 @@ public class GLUniformData {
      *
      */
     public GLUniformData(String name, float val) {
-        init(name, 1, new Float(val));
+        initScalar(name, 1, new Float(val));
     }
 
     /**
@@ -36,7 +36,7 @@ public class GLUniformData {
      * @param components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
      */
     public GLUniformData(String name, int components, IntBuffer data) {
-        init(name, components, data);
+        initBuffer(name, components, data);
     }
 
     /**
@@ -47,7 +47,19 @@ public class GLUniformData {
      * @param components number of elements of one object, ie 4 for GL_FLOAT_VEC4,
      */
     public GLUniformData(String name, int components, FloatBuffer data) {
-        init(name, components, data);
+        initBuffer(name, components, data);
+    }
+
+    private GLUniformData(int components, String name) {
+        initBuffer(name, components, null);
+    }
+
+    public static GLUniformData creatEmptyVector(String name, int components) {
+        return new GLUniformData(components, name);
+    }
+
+    public static GLUniformData creatEmptyMatrix(String name, int rows, int columns) {
+        return new GLUniformData(name, rows, columns, null);
     }
 
     /**
@@ -59,13 +71,13 @@ public class GLUniformData {
      * @param column the matrix column
      */
     public GLUniformData(String name, int rows, int columns, FloatBuffer data) {
-        init(name, rows, columns, data);
+        initBuffer(name, rows, columns, data);
     }
 
-    public GLUniformData setData(int data) { init(new Integer(data)); return this; }
-    public GLUniformData setData(float data) { init(new Float(data)); return this; }
-    public GLUniformData setData(IntBuffer data) { init(data); return this; }
-    public GLUniformData setData(FloatBuffer data) { init(data); return this; }
+    public GLUniformData setData(final int data) { initScalar(new Integer(data)); return this; }
+    public GLUniformData setData(final float data) { initScalar(new Float(data)); return this; }
+    public GLUniformData setData(final IntBuffer data) { initBuffer(data); return this; }
+    public GLUniformData setData(final FloatBuffer data) { initBuffer(data); return this; }
 
     public int       intValue()   { return ((Integer)data).intValue(); };
     public float     floatValue() { return ((Float)data).floatValue(); };
@@ -102,7 +114,7 @@ public class GLUniformData {
         return toString(null).toString();
     }
 
-    private void init(String name, int rows, int columns, Object data) {
+    private void initBuffer(String name, int rows, int columns, Buffer buffer) {
         if( 2>rows || rows>4 || 2>columns || columns>4 ) {
             throw new GLException("rowsXcolumns must be within [2..4]X[2..4], is: "+rows+"X"+columns);
         }
@@ -111,10 +123,20 @@ public class GLUniformData {
         this.columns=columns;
         this.isMatrix=true;
         this.location=-1;
-        init(data);
+        initBuffer(buffer);
     }
-
-    private void init(String name, int components, Object data) {
+    private void initScalar(String name, int components, Object data) {
+        if( 1>components || components>4 ) {
+            throw new GLException("components must be within [1..4], is: "+components);
+        }
+        this.name=name;
+        this.columns=components;
+        this.rows=1;
+        this.isMatrix=false;
+        this.location=-1;
+        initScalar(data);
+    }
+    private void initBuffer(String name, int components, Buffer buffer) {
         if( 1>components || components>4 ) {
             throw new GLException("components must be within [1..4], is: "+components);
         }
@@ -123,24 +145,36 @@ public class GLUniformData {
         this.rows=1;
         this.isMatrix=false;
         this.location=-1;
-        init(data);
+        initBuffer(buffer);
     }
 
-    private void init(Object data) {
+    private void initScalar(Object data) {
         if(data instanceof Buffer) {
+            initBuffer((Buffer)data);
+        } else if( null != data ) {
+            if(isMatrix) {
+                throw new GLException("Atom type not allowed for matrix : "+this);
+            }
+            this.count=1;
+            this.data=data;
+        } else {
+            this.count=0;
+            this.data=data;
+        }
+    }
+
+    private void initBuffer(final Buffer buffer) {
+        if( null != buffer ) {
             final int sz = rows*columns;
-            final Buffer buffer = (Buffer)data;
             if(buffer.remaining()<sz || 0!=buffer.remaining()%sz) {
                 throw new GLException("remaining data buffer size invalid: buffer: "+buffer.toString()+"\n\t"+this);
             }
-            this.count=buffer.remaining()/(rows*columns);
+            this.count=buffer.remaining()/sz;
+            this.data=buffer;
         } else {
-            if(isMatrix) {
-                throw new GLException("Atom type not allowed for matrix : "+this);
-            }
-            this.count=1;
+            this.count=0;
+            this.data=null;
         }
-        this.data=data;
     }
 
     public String getName() { return name; }
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PMSAAES2.java b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PMSAAES2.java
index 172bd52c8..33527381d 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PMSAAES2.java
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PMSAAES2.java
@@ -36,7 +36,6 @@ import javax.media.opengl.GLUniformData;
 import jogamp.graph.curve.opengl.shader.AttributeNames;
 import jogamp.graph.curve.opengl.shader.UniformNames;
 
-import com.jogamp.common.nio.Buffers;
 import com.jogamp.graph.curve.opengl.GLRegion;
 import com.jogamp.graph.curve.opengl.RegionRenderer;
 import com.jogamp.graph.curve.opengl.RenderState;
@@ -46,16 +45,23 @@ import com.jogamp.opengl.math.FloatUtil;
 import com.jogamp.opengl.math.geom.AABBox;
 import com.jogamp.opengl.util.GLArrayDataServer;
 import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.texture.Texture;
+import com.jogamp.opengl.util.texture.TextureSequence;
 
 public class VBORegion2PMSAAES2  extends GLRegion {
     private static final boolean DEBUG_FBO_1 = false;
     private static final boolean DEBUG_FBO_2 = false;
 
+    private final RenderState.ProgramLocal rsLocal;
+
     // Pass-1:
     private GLArrayDataServer gca_VerticesAttr;
     private GLArrayDataServer gca_CurveParamsAttr;
     private GLArrayDataServer gca_ColorsAttr;
     private GLArrayDataServer indicesBuffer;
+    private final GLUniformData gcu_ColorTexUnit;
+    private final float[] colorTexBBox; // x0, y0, x1, y1
+    private final GLUniformData gcu_ColorTexBBox;
     private ShaderProgram spPass1 = null;
 
     // Pass-2:
@@ -63,7 +69,6 @@ public class VBORegion2PMSAAES2  extends GLRegion {
     private GLArrayDataServer gca_FboTexCoordsAttr;
     private GLArrayDataServer indicesFbo;
     private final GLUniformData gcu_FboTexUnit;
-    private final GLUniformData gcu_FboTexSize;
     private final float[] pmvMatrix02 = new float[2*16]; // P + Mv
     private final GLUniformData gcu_PMVMatrix02;
     private ShaderProgram spPass2 = null;
@@ -76,34 +81,63 @@ public class VBORegion2PMSAAES2  extends GLRegion {
 
     final int[] maxTexSize = new int[] { -1 } ;
 
+    /**
+     * <p>
+     * Since multiple {@link Region}s may share one
+     * {@link ShaderProgram}, the uniform data must always be updated.
+     * </p>
+     *
+     * @param gl
+     * @param renderer
+     * @param renderModes
+     * @param pass1
+     * @param quality
+     * @param sampleCount
+     */
     public void useShaderProgram(final GL2ES2 gl, final RegionRenderer renderer, final int renderModes, final boolean pass1, final int quality, final int sampleCount) {
         final RenderState rs = renderer.getRenderState();
-        renderer.useShaderProgram(gl, renderModes, pass1, quality, sampleCount);
+        final boolean updateLocGlobal = renderer.useShaderProgram(gl, renderModes, pass1, quality, sampleCount);
         final ShaderProgram sp = renderer.getRenderState().getShaderProgram();
-        final boolean updateLocation;
+        final boolean updateLocLocal;
         if( pass1 ) {
-            updateLocation = !sp.equals(spPass1);
+            updateLocLocal = !sp.equals(spPass1);
             spPass1 = sp;
-            rs.update(gl, updateLocation, renderModes, true);
-            rs.updateUniformLoc(gl, updateLocation, gcu_PMVMatrix02);
-            rs.updateAttributeLoc(gl, updateLocation, gca_VerticesAttr);
-            rs.updateAttributeLoc(gl, updateLocation, gca_CurveParamsAttr);
-            if( null != gca_ColorsAttr ) {
-                rs.updateAttributeLoc(gl, updateLocation, gca_ColorsAttr);
+            if( DEBUG ) {
+                System.err.println("XXX changedSP.p1 updateLocation loc "+updateLocLocal+" / glob "+updateLocGlobal);
+            }
+            if( updateLocLocal ) {
+                rs.updateAttributeLoc(gl, true, gca_VerticesAttr, true);
+                rs.updateAttributeLoc(gl, true, gca_CurveParamsAttr, true);
+                if( null != gca_ColorsAttr ) {
+                    rs.updateAttributeLoc(gl, true, gca_ColorsAttr, true);
+                }
+            }
+            rsLocal.update(gl, rs, updateLocLocal, renderModes, true, true);
+            rs.updateUniformLoc(gl, updateLocLocal, gcu_PMVMatrix02, true);
+            if( null != gcu_ColorTexUnit ) {
+                rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexUnit, true);
+                rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexBBox, true);
             }
         } else {
-            updateLocation = !sp.equals(spPass2);
+            updateLocLocal = !sp.equals(spPass2);
             spPass2 = sp;
-            rs.update(gl, updateLocation, renderModes, false);
-            rs.updateAttributeLoc(gl, updateLocation, gca_FboVerticesAttr);
-            rs.updateAttributeLoc(gl, updateLocation, gca_FboTexCoordsAttr);
-            rs.updateUniformDataLoc(gl, updateLocation, true, gcu_FboTexUnit);
-            rs.updateUniformLoc(gl, updateLocation, gcu_FboTexSize);
+            if( DEBUG ) {
+                System.err.println("XXX changedSP.p2 updateLocation loc "+updateLocLocal+" / glob "+updateLocGlobal);
+            }
+            if( updateLocLocal ) {
+                rs.updateAttributeLoc(gl, true, gca_FboVerticesAttr, true);
+                rs.updateAttributeLoc(gl, true, gca_FboTexCoordsAttr, true);
+            }
+            rsLocal.update(gl, rs, updateLocLocal, renderModes, false, true);
+            rs.updateUniformDataLoc(gl, updateLocLocal, false /* updateData */, gcu_FboTexUnit, true); // FIXME always update if changing tex-unit
         }
     }
 
-    public VBORegion2PMSAAES2(final int renderModes, final int textureUnit) {
-        super(renderModes);
+    public VBORegion2PMSAAES2(final int renderModes, final TextureSequence colorTexSeq, final int pass2TexUnit) {
+        super(renderModes, colorTexSeq);
+
+        rsLocal = new RenderState.ProgramLocal();
+
         final int initialElementCount = 256;
 
         // Pass 1:
@@ -121,14 +155,22 @@ public class VBORegion2PMSAAES2  extends GLRegion {
         } else {
             gca_ColorsAttr = null;
         }
+        if( hasColorTexture() ) {
+            gcu_ColorTexUnit = new GLUniformData(UniformNames.gcu_ColorTexUnit, colorTexSeq.getTextureUnit());
+            colorTexBBox = new float[4];
+            gcu_ColorTexBBox = new GLUniformData(UniformNames.gcu_ColorTexBBox, 4, FloatBuffer.wrap(colorTexBBox));
+        } else {
+            gcu_ColorTexUnit = null;
+            colorTexBBox = null;
+            gcu_ColorTexBBox = null;
+        }
 
         FloatUtil.makeIdentityf(pmvMatrix02, 0);
         FloatUtil.makeIdentityf(pmvMatrix02, 16);
         gcu_PMVMatrix02 = new GLUniformData(UniformNames.gcu_PMVMatrix02, 4, 4, FloatBuffer.wrap(pmvMatrix02));
 
         // Pass 2:
-        gcu_FboTexUnit = new GLUniformData(UniformNames.gcu_FboTexUnit, textureUnit);
-        gcu_FboTexSize = new GLUniformData(UniformNames.gcu_FboTexSize, 2, Buffers.newDirectFloatBuffer(2));
+        gcu_FboTexUnit = new GLUniformData(UniformNames.gcu_FboTexUnit, pass2TexUnit);
 
         indicesFbo = GLArrayDataServer.createData(3, GL2ES2.GL_SHORT, 2, GL.GL_STATIC_DRAW, GL.GL_ELEMENT_ARRAY_BUFFER);
         indicesFbo.puts((short) 0); indicesFbo.puts((short) 1); indicesFbo.puts((short) 3);
@@ -208,8 +250,12 @@ public class VBORegion2PMSAAES2  extends GLRegion {
             gca_ColorsAttr.seal(gl, true);
             gca_ColorsAttr.enableBuffer(gl, false);
         }
-
-        // update all bbox related data
+        if( null != gcu_ColorTexUnit ) {
+            colorTexBBox[0] = box.getMinX();
+            colorTexBBox[1] = box.getMinY();
+            colorTexBBox[2] = box.getMaxX();
+            colorTexBBox[3] = box.getMaxY();
+        }
         gca_FboVerticesAttr.seal(gl, false);
         {
             final FloatBuffer fb = (FloatBuffer)gca_FboVerticesAttr.getBuffer();
@@ -350,8 +396,6 @@ public class VBORegion2PMSAAES2  extends GLRegion {
     private void renderFBO(final GL2ES2 gl, final RenderState rs, final int width, final int height, final int sampleCount) {
         gl.glViewport(0, 0, width, height);
 
-        gl.glUniform(gcu_FboTexSize);
-
         gl.glActiveTexture(GL.GL_TEXTURE0 + gcu_FboTexUnit.intValue());
 
         fbo.use(gl, fbo.getSamplingSink());
@@ -378,11 +422,6 @@ public class VBORegion2PMSAAES2  extends GLRegion {
         if(null == fbo) {
             fboWidth  = targetFboWidth;
             fboHeight  = targetFboHeight;
-            final FloatBuffer fboTexSize = (FloatBuffer) gcu_FboTexSize.getBuffer();
-            {
-                fboTexSize.put(0, fboWidth);
-                fboTexSize.put(1, fboHeight);
-            }
             fbo = new FBObject();
             fbo.reset(gl, fboWidth, fboHeight, sampleCount[0], false);
             sampleCount[0] = fbo.getNumSamples();
@@ -409,11 +448,6 @@ public class VBORegion2PMSAAES2  extends GLRegion {
             }
             fboWidth  = targetFboWidth;
             fboHeight  = targetFboHeight;
-            final FloatBuffer fboTexSize = (FloatBuffer) gcu_FboTexSize.getBuffer();
-            {
-                fboTexSize.put(0, fboWidth);
-                fboTexSize.put(1, fboHeight);
-            }
         }
         fbo.bind(gl);
 
@@ -434,8 +468,23 @@ public class VBORegion2PMSAAES2  extends GLRegion {
             gca_ColorsAttr.enableBuffer(gl, true);
         }
         indicesBuffer.bindBuffer(gl, true); // keeps VBO binding
-
-        gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        if( null != gcu_ColorTexUnit ) {
+            final TextureSequence.TextureFrame frame = colorTexSeq.getNextTexture(gl);
+            gl.glActiveTexture(GL.GL_TEXTURE0 + colorTexSeq.getTextureUnit());
+            final Texture tex = frame.getTexture();
+            tex.bind(gl);
+            tex.enable(gl); // nop on core
+            final int colorTexUnit = colorTexSeq.getTextureUnit();
+            if( colorTexUnit != gcu_ColorTexUnit.intValue() ) {
+                gcu_ColorTexUnit.setData(colorTexUnit);
+                gl.glUniform(gcu_ColorTexUnit);
+            }
+            gl.glUniform(gcu_ColorTexBBox); // FIXME: Only if changed!
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+            tex.disable(gl); // nop on core
+        } else {
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        }
 
         indicesBuffer.bindBuffer(gl, false);
         if( null != gca_ColorsAttr ) {
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PVBAAES2.java b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PVBAAES2.java
index a701a4b19..c623eddb7 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PVBAAES2.java
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegion2PVBAAES2.java
@@ -37,7 +37,6 @@ import jogamp.graph.curve.opengl.shader.AttributeNames;
 import jogamp.graph.curve.opengl.shader.UniformNames;
 import jogamp.opengl.Debug;
 
-import com.jogamp.common.nio.Buffers;
 import com.jogamp.graph.curve.Region;
 import com.jogamp.graph.curve.opengl.GLRegion;
 import com.jogamp.graph.curve.opengl.RegionRenderer;
@@ -49,6 +48,8 @@ import com.jogamp.opengl.math.FloatUtil;
 import com.jogamp.opengl.math.geom.AABBox;
 import com.jogamp.opengl.util.GLArrayDataServer;
 import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.texture.Texture;
+import com.jogamp.opengl.util.texture.TextureSequence;
 
 public class VBORegion2PVBAAES2  extends GLRegion {
     private static final boolean DEBUG_FBO_1 = false;
@@ -84,11 +85,16 @@ public class VBORegion2PVBAAES2  extends GLRegion {
     }
 
 
+    private final RenderState.ProgramLocal rsLocal;
+
     // Pass-1:
     private GLArrayDataServer gca_VerticesAttr;
     private GLArrayDataServer gca_CurveParamsAttr;
     private GLArrayDataServer gca_ColorsAttr;
     private GLArrayDataServer indicesBuffer;
+    private final GLUniformData gcu_ColorTexUnit;
+    private final float[] colorTexBBox; // x0, y0, x1, y1
+    private final GLUniformData gcu_ColorTexBBox;
     private ShaderProgram spPass1 = null;
 
     // Pass-2:
@@ -110,34 +116,64 @@ public class VBORegion2PVBAAES2  extends GLRegion {
 
     final int[] maxTexSize = new int[] { -1 } ;
 
+    /**
+     * <p>
+     * Since multiple {@link Region}s may share one
+     * {@link ShaderProgram}, the uniform data must always be updated.
+     * </p>
+     *
+     * @param gl
+     * @param renderer
+     * @param renderModes
+     * @param pass1
+     * @param quality
+     * @param sampleCount
+     */
     public void useShaderProgram(final GL2ES2 gl, final RegionRenderer renderer, final int renderModes, final boolean pass1, final int quality, final int sampleCount) {
         final RenderState rs = renderer.getRenderState();
-        renderer.useShaderProgram(gl, renderModes, pass1, quality, sampleCount);
+        final boolean updateLocGlobal = renderer.useShaderProgram(gl, renderModes, pass1, quality, sampleCount);
         final ShaderProgram sp = renderer.getRenderState().getShaderProgram();
-        final boolean updateLocation;
+        final boolean updateLocLocal;
         if( pass1 ) {
-            updateLocation = !sp.equals(spPass1);
+            updateLocLocal = !sp.equals(spPass1);
             spPass1 = sp;
-            rs.update(gl, updateLocation, renderModes, true);
-            rs.updateUniformLoc(gl, updateLocation, gcu_PMVMatrix02);
-            rs.updateAttributeLoc(gl, updateLocation, gca_VerticesAttr);
-            rs.updateAttributeLoc(gl, updateLocation, gca_CurveParamsAttr);
-            if( null != gca_ColorsAttr ) {
-                rs.updateAttributeLoc(gl, updateLocation, gca_ColorsAttr);
+            if( DEBUG ) {
+                System.err.println("XXX changedSP.p1 updateLocation loc "+updateLocLocal+" / glob "+updateLocGlobal);
+            }
+            if( updateLocLocal ) {
+                rs.updateAttributeLoc(gl, true, gca_VerticesAttr, true);
+                rs.updateAttributeLoc(gl, true, gca_CurveParamsAttr, true);
+                if( null != gca_ColorsAttr ) {
+                    rs.updateAttributeLoc(gl, true, gca_ColorsAttr, true);
+                }
+            }
+            rsLocal.update(gl, rs, updateLocLocal, renderModes, true, true);
+            rs.updateUniformLoc(gl, updateLocLocal, gcu_PMVMatrix02, true);
+            if( null != gcu_ColorTexUnit ) {
+                rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexUnit, true);
+                rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexBBox, true);
             }
         } else {
-            updateLocation = !sp.equals(spPass2);
+            updateLocLocal = !sp.equals(spPass2);
             spPass2 = sp;
-            rs.update(gl, updateLocation, renderModes, false);
-            rs.updateAttributeLoc(gl, updateLocation, gca_FboVerticesAttr);
-            rs.updateAttributeLoc(gl, updateLocation, gca_FboTexCoordsAttr);
-            rs.updateUniformDataLoc(gl, updateLocation, true, gcu_FboTexUnit);
-            rs.updateUniformLoc(gl, updateLocation, gcu_FboTexSize);
+            if( DEBUG ) {
+                System.err.println("XXX changedSP.p2 updateLocation loc "+updateLocLocal+" / glob "+updateLocGlobal);
+            }
+            if( updateLocLocal ) {
+                rs.updateAttributeLoc(gl, true, gca_FboVerticesAttr, true);
+                rs.updateAttributeLoc(gl, true, gca_FboTexCoordsAttr, true);
+            }
+            rsLocal.update(gl, rs, updateLocLocal, renderModes, false, true);
+            rs.updateUniformDataLoc(gl, updateLocLocal, false /* updateData */, gcu_FboTexUnit, true); // FIXME always update if changing tex-unit
+            rs.updateUniformLoc(gl, updateLocLocal, gcu_FboTexSize, true);
         }
     }
 
-    public VBORegion2PVBAAES2(final int renderModes, final int textureUnit) {
-        super(renderModes);
+    public VBORegion2PVBAAES2(final int renderModes, final TextureSequence colorTexSeq, final int pass2TexUnit) {
+        super(renderModes, colorTexSeq);
+
+        rsLocal = new RenderState.ProgramLocal();
+
         final int initialElementCount = 256;
 
         // Pass 1:
@@ -154,14 +190,23 @@ public class VBORegion2PVBAAES2  extends GLRegion {
         } else {
             gca_ColorsAttr = null;
         }
+        if( hasColorTexture() ) {
+            gcu_ColorTexUnit = new GLUniformData(UniformNames.gcu_ColorTexUnit, colorTexSeq.getTextureUnit());
+            colorTexBBox = new float[4];
+            gcu_ColorTexBBox = new GLUniformData(UniformNames.gcu_ColorTexBBox, 4, FloatBuffer.wrap(colorTexBBox));
+        } else {
+            gcu_ColorTexUnit = null;
+            colorTexBBox = null;
+            gcu_ColorTexBBox = null;
+        }
 
         FloatUtil.makeIdentityf(pmvMatrix02, 0);
         FloatUtil.makeIdentityf(pmvMatrix02, 16);
         gcu_PMVMatrix02 = new GLUniformData(UniformNames.gcu_PMVMatrix02, 4, 4, FloatBuffer.wrap(pmvMatrix02));
 
         // Pass 2:
-        gcu_FboTexUnit = new GLUniformData(UniformNames.gcu_FboTexUnit, textureUnit);
-        gcu_FboTexSize = new GLUniformData(UniformNames.gcu_FboTexSize, 2, Buffers.newDirectFloatBuffer(2));
+        gcu_FboTexUnit = new GLUniformData(UniformNames.gcu_FboTexUnit, pass2TexUnit);
+        gcu_FboTexSize = new GLUniformData(UniformNames.gcu_FboTexSize, 2, FloatBuffer.wrap(new float[2]));
 
         indicesFbo = GLArrayDataServer.createData(3, GL2ES2.GL_SHORT, 2, GL.GL_STATIC_DRAW, GL.GL_ELEMENT_ARRAY_BUFFER);
         indicesFbo.puts((short) 0); indicesFbo.puts((short) 1); indicesFbo.puts((short) 3);
@@ -250,8 +295,12 @@ public class VBORegion2PVBAAES2  extends GLRegion {
             gca_ColorsAttr.seal(gl, true);
             gca_ColorsAttr.enableBuffer(gl, false);
         }
-
-        // update all bbox related data
+        if( null != gcu_ColorTexUnit ) {
+            colorTexBBox[0] = box.getMinX();
+            colorTexBBox[1] = box.getMinY();
+            colorTexBBox[2] = box.getMaxX();
+            colorTexBBox[3] = box.getMaxY();
+        }
         gca_FboVerticesAttr.seal(gl, false);
         {
             final FloatBuffer fb = (FloatBuffer)gca_FboVerticesAttr.getBuffer();
@@ -537,14 +586,30 @@ public class VBORegion2PVBAAES2  extends GLRegion {
 
     private void renderRegion(final GL2ES2 gl) {
         gl.glUniform(gcu_PMVMatrix02);
+
         gca_VerticesAttr.enableBuffer(gl, true);
         gca_CurveParamsAttr.enableBuffer(gl, true);
         if( null != gca_ColorsAttr ) {
             gca_ColorsAttr.enableBuffer(gl, true);
         }
         indicesBuffer.bindBuffer(gl, true); // keeps VBO binding
-
-        gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        if( null != gcu_ColorTexUnit ) {
+            final TextureSequence.TextureFrame frame = colorTexSeq.getNextTexture(gl);
+            gl.glActiveTexture(GL.GL_TEXTURE0 + colorTexSeq.getTextureUnit());
+            final Texture tex = frame.getTexture();
+            tex.bind(gl);
+            tex.enable(gl); // nop on core
+            final int colorTexUnit = colorTexSeq.getTextureUnit();
+            if( colorTexUnit != gcu_ColorTexUnit.intValue() ) {
+                gcu_ColorTexUnit.setData(colorTexUnit);
+                gl.glUniform(gcu_ColorTexUnit);
+            }
+            gl.glUniform(gcu_ColorTexBBox); // FIXME: Only if changed!
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+            tex.disable(gl); // nop on core
+        } else {
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        }
 
         indicesBuffer.bindBuffer(gl, false);
         if( null != gca_ColorsAttr ) {
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegionSPES2.java b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegionSPES2.java
index 8268394dd..0ec139a0f 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/VBORegionSPES2.java
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/VBORegionSPES2.java
@@ -27,26 +27,41 @@
  */
 package jogamp.graph.curve.opengl;
 
+import java.nio.FloatBuffer;
+
 import javax.media.opengl.GL;
 import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GLUniformData;
 
 import jogamp.graph.curve.opengl.shader.AttributeNames;
+import jogamp.graph.curve.opengl.shader.UniformNames;
 
+import com.jogamp.graph.curve.Region;
 import com.jogamp.graph.curve.opengl.GLRegion;
 import com.jogamp.graph.curve.opengl.RegionRenderer;
 import com.jogamp.graph.curve.opengl.RenderState;
 import com.jogamp.opengl.util.GLArrayDataServer;
 import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.texture.Texture;
+import com.jogamp.opengl.util.texture.TextureSequence;
 
 public class VBORegionSPES2 extends GLRegion {
+    private final RenderState.ProgramLocal rsLocal;
+
     private GLArrayDataServer gca_VerticesAttr = null;
     private GLArrayDataServer gca_CurveParamsAttr = null;
     private GLArrayDataServer gca_ColorsAttr;
     private GLArrayDataServer indicesBuffer = null;
+    private final GLUniformData gcu_ColorTexUnit;
+    private final float[] colorTexBBox; // x0, y0, x1, y1
+    private final GLUniformData gcu_ColorTexBBox;
     private ShaderProgram spPass1 = null;
 
-    public VBORegionSPES2(final int renderModes) {
-        super(renderModes);
+    public VBORegionSPES2(final int renderModes, final TextureSequence colorTexSeq) {
+        super(renderModes, colorTexSeq);
+
+        rsLocal = new RenderState.ProgramLocal();
+
         final int initialElementCount = 256;
         indicesBuffer = GLArrayDataServer.createData(3, GL2ES2.GL_SHORT, initialElementCount, GL.GL_STATIC_DRAW, GL.GL_ELEMENT_ARRAY_BUFFER);
 
@@ -62,6 +77,15 @@ public class VBORegionSPES2 extends GLRegion {
         } else {
             gca_ColorsAttr = null;
         }
+        if( hasColorTexture() ) {
+            gcu_ColorTexUnit = new GLUniformData(UniformNames.gcu_ColorTexUnit, colorTexSeq.getTextureUnit());
+            colorTexBBox = new float[4];
+            gcu_ColorTexBBox = new GLUniformData(UniformNames.gcu_ColorTexBBox, 4, FloatBuffer.wrap(colorTexBBox));
+        } else {
+            gcu_ColorTexUnit = null;
+            colorTexBBox = null;
+            gcu_ColorTexBBox = null;
+        }
     }
 
     @Override
@@ -117,8 +141,6 @@ public class VBORegionSPES2 extends GLRegion {
     @Override
     protected void updateImpl(final GL2ES2 gl) {
         // seal buffers
-        indicesBuffer.seal(gl, true);
-        indicesBuffer.enableBuffer(gl, false);
         gca_VerticesAttr.seal(gl, true);
         gca_VerticesAttr.enableBuffer(gl, false);
         gca_CurveParamsAttr.seal(gl, true);
@@ -127,6 +149,14 @@ public class VBORegionSPES2 extends GLRegion {
             gca_ColorsAttr.seal(gl, true);
             gca_ColorsAttr.enableBuffer(gl, false);
         }
+        if( null != gcu_ColorTexUnit ) {
+            colorTexBBox[0] = box.getMinX();
+            colorTexBBox[1] = box.getMinY();
+            colorTexBBox[2] = box.getMaxX();
+            colorTexBBox[3] = box.getMaxY();
+        }
+        indicesBuffer.seal(gl, true);
+        indicesBuffer.enableBuffer(gl, false);
         if(DEBUG_INSTANCE) {
             System.err.println("VBORegionSPES2 idx "+indicesBuffer);
             System.err.println("VBORegionSPES2 ver "+gca_VerticesAttr);
@@ -134,22 +164,37 @@ public class VBORegionSPES2 extends GLRegion {
         }
     }
 
+    /**
+     * <p>
+     * Since multiple {@link Region}s may share one
+     * {@link ShaderProgram}, the uniform data must always be updated.
+     * </p>
+     *
+     * @param gl
+     * @param renderer
+     * @param renderModes
+     * @param quality
+     */
     public void useShaderProgram(final GL2ES2 gl, final RegionRenderer renderer, final int renderModes, final int quality) {
         final RenderState rs = renderer.getRenderState();
-        final boolean updateLocation0 = renderer.useShaderProgram(gl, renderModes, true, quality, 0);
+        final boolean updateLocGlobal = renderer.useShaderProgram(gl, renderModes, true, quality, 0);
         final ShaderProgram sp = renderer.getRenderState().getShaderProgram();
-        final boolean updateLocation = !sp.equals(spPass1);
+        final boolean updateLocLocal = !sp.equals(spPass1);
         spPass1 = sp;
-
-        // update attribute-location and uniform data and location
-        rs.update(gl, updateLocation, renderModes, true);
-        rs.updateAttributeLoc(gl, updateLocation, gca_VerticesAttr);
-        rs.updateAttributeLoc(gl, updateLocation, gca_CurveParamsAttr);
-        if( null != gca_ColorsAttr ) {
-            rs.updateAttributeLoc(gl, updateLocation, gca_ColorsAttr);
-        }
         if( DEBUG ) {
-            System.err.println("XXX changedSP.p1 "+updateLocation+" / "+updateLocation0);
+            System.err.println("XXX changedSP.p1 updateLocation loc "+updateLocLocal+" / glob "+updateLocGlobal);
+        }
+        if( updateLocLocal ) {
+            rs.updateAttributeLoc(gl, true, gca_VerticesAttr, true);
+            rs.updateAttributeLoc(gl, true, gca_CurveParamsAttr, true);
+            if( null != gca_ColorsAttr ) {
+                rs.updateAttributeLoc(gl, true, gca_ColorsAttr, true);
+            }
+        }
+        rsLocal.update(gl, rs, updateLocLocal, renderModes, true, true);
+        if( null != gcu_ColorTexUnit ) {
+            rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexUnit, true);
+            rs.updateUniformLoc(gl, updateLocLocal, gcu_ColorTexBBox, true);
         }
     }
 
@@ -171,8 +216,23 @@ public class VBORegionSPES2 extends GLRegion {
             gca_ColorsAttr.enableBuffer(gl, true);
         }
         indicesBuffer.bindBuffer(gl, true); // keeps VBO binding
-
-        gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        if( null != gcu_ColorTexUnit ) {
+            final TextureSequence.TextureFrame frame = colorTexSeq.getNextTexture(gl);
+            gl.glActiveTexture(GL.GL_TEXTURE0 + colorTexSeq.getTextureUnit());
+            final Texture tex = frame.getTexture();
+            tex.bind(gl);
+            tex.enable(gl); // nop on core
+            final int colorTexUnit = colorTexSeq.getTextureUnit();
+            if( colorTexUnit != gcu_ColorTexUnit.intValue() ) {
+                gcu_ColorTexUnit.setData(colorTexUnit);
+                gl.glUniform(gcu_ColorTexUnit);
+            }
+            gl.glUniform(gcu_ColorTexBBox); // FIXME: Only if changed!
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+            tex.disable(gl); // nop on core
+        } else {
+            gl.glDrawElements(GL2ES2.GL_TRIANGLES, indicesBuffer.getElementCount() * indicesBuffer.getComponentCount(), GL2ES2.GL_UNSIGNED_SHORT, 0);
+        }
 
         indicesBuffer.bindBuffer(gl, false);
         if( null != gca_ColorsAttr ) {
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/AttributeNames.java b/src/jogl/classes/jogamp/graph/curve/opengl/shader/AttributeNames.java
index b2c73a2e4..dff536645 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/AttributeNames.java
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/AttributeNames.java
@@ -44,6 +44,7 @@ public class AttributeNames {
     public static final String COLOR_ATTR_NAME = "gca_Colors";
 
     public static final String FBO_VERTEX_ATTR_NAME = "gca_FboVertices";
+
     public static final String FBO_TEXCOORDS_ATTR_NAME = "gca_FboTexCoords";
 
 }
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/UniformNames.java b/src/jogl/classes/jogamp/graph/curve/opengl/shader/UniformNames.java
index f37025516..7244851ff 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/UniformNames.java
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/UniformNames.java
@@ -4,6 +4,8 @@ public class UniformNames {
     public static final String gcu_PMVMatrix01 = "gcu_PMVMatrix01"; // gcu_PMVMatrix[3]; // P, Mv, and Mvi
     public static final String gcu_ColorStatic = "gcu_ColorStatic";
     public static final String gcu_Weight = "gcu_Weight";
+    public static final String gcu_ColorTexUnit = "gcu_ColorTexUnit";
+    public static final String gcu_ColorTexBBox = "gcu_ColorTexBBox";
 
     public static final String gcu_PMVMatrix02 = "gcu_PMVMatrix02"; // gcu_PMVMatrix[3]; // P, Mv, and Mvi
     public static final String gcu_FboTexUnit = "gcu_FboTexUnit";
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve_simple.glsl b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve_simple.glsl
index 373e8d575..83b312a0b 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve_simple.glsl
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1-curve_simple.glsl
@@ -1,7 +1,11 @@
 
     if( gcv_CurveParam.x == 0.0 && gcv_CurveParam.y == 0.0 ) {
         // pass-1: Lines
-#ifdef USE_COLOR_CHANNEL
+#if defined(USE_COLOR_TEXTURE) && defined(USE_COLOR_CHANNEL)
+        mgl_FragColor = texture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st) * gcv_Color * gcu_ColorStatic;
+#elif defined(USE_COLOR_TEXTURE)
+        mgl_FragColor = texture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st) * gcu_ColorStatic;
+#elif defined(USE_COLOR_CHANNEL)
         mgl_FragColor = gcv_Color * gcu_ColorStatic;
 #else
         mgl_FragColor = gcu_ColorStatic;
@@ -17,7 +21,13 @@
         float position = rtex.y - (rtex.x * (1.0 - rtex.x));
 
         float a = clamp(0.5 - ( position/length(f) ) * sign(gcv_CurveParam.y), 0.0, 1.0);
-#ifdef USE_COLOR_CHANNEL
+#if defined(USE_COLOR_TEXTURE) && defined(USE_COLOR_CHANNEL)
+        vec4 t = texture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st);
+        mgl_FragColor = vec4(t.rgb * gcv_Color.rgb * gcu_ColorStatic.rgb, t.a * gcv_Color.a * gcu_ColorStatic.a * a);
+#elif defined(USE_COLOR_TEXTURE)
+        vec4 t = texture2D(gcu_ColorTexUnit, gcv_ColorTexCoord.st);
+        mgl_FragColor = vec4(t.rgb * gcu_ColorStatic.rgb, t.a * gcu_ColorStatic.a * a);
+#elif defined(USE_COLOR_CHANNEL)
         mgl_FragColor = vec4(gcv_Color.rgb * gcu_ColorStatic.rgb, gcv_Color.a * gcu_ColorStatic.a * a);
 #else
         mgl_FragColor = vec4(gcu_ColorStatic.rgb, gcu_ColorStatic.a * a);
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1.vp b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1.vp
index 46729cfd0..c6ed4ca58 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1.vp
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-pass1.vp
@@ -11,7 +11,6 @@
 
 void main(void)
 {
-    // gl_Position = gcu_PMVMatrix02[0] * gcu_PMVMatrix02[1] * vec4(gca_Vertices, 1);
     gl_Position = gcu_PMVMatrix02[0] * gcu_PMVMatrix02[1] * gca_Vertices;
 #if 1
     gcv_CurveParam = gca_CurveParams;
@@ -24,6 +23,10 @@ void main(void)
         gcv_CurveParam = gca_CurveParams;
     }
 #endif
+#ifdef USE_COLOR_TEXTURE
+    vec2 dim = vec2(gcu_ColorTexBBox.z - gcu_ColorTexBBox.x, gcu_ColorTexBBox.w - gcu_ColorTexBBox.y);
+    gcv_ColorTexCoord = vec2(gca_Vertices.x - gcu_ColorTexBBox.x, gca_Vertices.y - gcu_ColorTexBBox.y) / dim;
+#endif
 #ifdef USE_COLOR_CHANNEL
     gcv_Color = gca_Colors;
 #endif
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-single.vp b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-single.vp
index 7598c23f8..14210be39 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-single.vp
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/curverenderer01-single.vp
@@ -11,7 +11,6 @@
 
 void main(void)
 {
-    // gl_Position = gcu_PMVMatrix01[0] * gcu_PMVMatrix01[1] * vec4(gca_Vertices, 1);
     gl_Position = gcu_PMVMatrix01[0] * gcu_PMVMatrix01[1] * gca_Vertices;
 #if 1
     gcv_CurveParam = gca_CurveParams;
@@ -24,6 +23,10 @@ void main(void)
         gcv_CurveParam = gca_CurveParams;
     }
 #endif
+#ifdef USE_COLOR_TEXTURE
+    vec2 dim = vec2(gcu_ColorTexBBox.z - gcu_ColorTexBBox.x, gcu_ColorTexBBox.w - gcu_ColorTexBBox.y);
+    gcv_ColorTexCoord = vec2(gca_Vertices.x - gcu_ColorTexBBox.x, gca_Vertices.y - gcu_ColorTexBBox.y) / dim;
+#endif
 #ifdef USE_COLOR_CHANNEL
     gcv_Color = gca_Colors;
 #endif
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/uniforms.glsl b/src/jogl/classes/jogamp/graph/curve/opengl/shader/uniforms.glsl
index 848c26819..ae7fa8490 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/uniforms.glsl
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/uniforms.glsl
@@ -6,6 +6,11 @@ uniform mat4    gcu_PMVMatrix01[3]; // P, Mv, and Mvi
 uniform vec4    gcu_ColorStatic;
 uniform float   gcu_Weight;
 
+#ifdef USE_COLOR_TEXTURE
+    uniform sampler2D  gcu_ColorTexUnit;
+    uniform vec4  gcu_ColorTexBBox;
+#endif
+
 uniform mat4    gcu_PMVMatrix02[3]; // P, Mv, and Mvi
 uniform sampler2D  gcu_FboTexUnit;
 
@@ -14,11 +19,4 @@ uniform sampler2D  gcu_FboTexUnit;
  */
 uniform vec2   gcu_FboTexSize;
 
-// const   int     MAX_TEXTURE_UNITS = 8; // <= gl_MaxTextureImageUnits 
-// const   int     MAX_LIGHTS = 8; 
-// uniform mat3   gcu_NormalMatrix; // transpose(inverse(ModelView)).3x3
-// uniform int     gcu_ColorEnabled;
-// uniform int     gcu_TexCoordEnabled[MAX_TEXTURE_UNITS];
-// uniform int     gcu_CullFace;
-
 #endif // uniforms_glsl
diff --git a/src/jogl/classes/jogamp/graph/curve/opengl/shader/varyings.glsl b/src/jogl/classes/jogamp/graph/curve/opengl/shader/varyings.glsl
index 2054c9c21..265ab6915 100644
--- a/src/jogl/classes/jogamp/graph/curve/opengl/shader/varyings.glsl
+++ b/src/jogl/classes/jogamp/graph/curve/opengl/shader/varyings.glsl
@@ -6,6 +6,10 @@ varying vec3    gcv_CurveParam;
 
 varying vec2    gcv_FboTexCoord;
 
+#ifdef USE_COLOR_TEXTURE
+    varying vec2    gcv_ColorTexCoord;
+#endif
+
 #ifdef USE_COLOR_CHANNEL
     varying vec4    gcv_Color;
 #endif