Adding GEOMETRY_SHADER support in ShaderCode, adding core GL3/GEOMETRY_SHADER unit tests. ; Simplified GLContext version number

- Adding GEOMETRY_SHADER support in ShaderCode, adding core GL3/GEOMETRY_SHADER unit tests

  Chuck Ritola reported in December 2012 that we lack support of GEOMETRY_SHADER
  and he provided a test case.

  The latter is cleaned up to use GL3 core profile features only
  tesing a pass-through and the flip-XYZ geometry shader.

  ShaderUtil is fixed.

- Simplified GLContext version number
  The OpenGL major/minor version is now hold in a VersionNumber instance
  to simplify usage. Also expose it via getGLVersionNumber() while marking
  getGLVersionMajor() and getGLVersionMinor() deprecated.

12 files changed, 610 insertions, 52 deletions

diff --git a/src/jogl/classes/com/jogamp/opengl/GLExtensions.java b/src/jogl/classes/com/jogamp/opengl/GLExtensions.java
index cf81b85ee..c0666d153 100644
--- a/src/jogl/classes/com/jogamp/opengl/GLExtensions.java
+++ b/src/jogl/classes/com/jogamp/opengl/GLExtensions.java
@@ -73,8 +73,9 @@ public class GLExtensions {
   public static final String OES_EGL_image_external          = "GL_OES_EGL_image_external";
   
   public static final String ARB_gpu_shader_fp64             = "GL_ARB_gpu_shader_fp64";
-  public static final String ARB_shader_objects              = "GL_ARB_shader_objects";
-   
+  public static final String ARB_shader_objects              = "GL_ARB_shader_objects"; 
+  public static final String ARB_geometry_shader4            = "GL_ARB_geometry_shader4";
+  
   //
   // Aliased GLX/WGL/.. extensions
   //
diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java
index e6dde3237..1e552c17f 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderCode.java
@@ -45,6 +45,7 @@ import java.util.Set;
 
 import javax.media.opengl.GL;
 import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GL3;
 import javax.media.opengl.GLES2;
 import javax.media.opengl.GLContext;
 import javax.media.opengl.GLException;
@@ -72,6 +73,12 @@ public class ShaderCode {
     /** Unique resource suffix for {@link GL2ES2#GL_VERTEX_SHADER} in binary: <code>bvp</code> */
     public static final String SUFFIX_VERTEX_BINARY   = "bvp" ;
     
+    /** Unique resource suffix for {@link GL3#GL_GEOMETRY_SHADER} in source code: <code>gp</code> */
+    public static final String SUFFIX_GEOMETRY_SOURCE =  "gp" ;
+    
+    /** Unique resource suffix for {@link GL3#GL_GEOMETRY_SHADER} in binary: <code>bgp</code> */
+    public static final String SUFFIX_GEOMETRY_BINARY = "bgp" ;
+    
     /** Unique resource suffix for {@link GL2ES2#GL_FRAGMENT_SHADER} in source code: <code>fp</code> */
     public static final String SUFFIX_FRAGMENT_SOURCE =  "fp" ;
     
@@ -82,7 +89,7 @@ public class ShaderCode {
     public static final String SUB_PATH_NVIDIA = "nvidia" ;
 
     /**
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param count number of shaders
      * @param source CharSequence array containing the shader sources, organized as <code>source[count][strings-per-shader]</code>.
      *               May be either an immutable <code>String</code> - or mutable <code>StringBuilder</code> array.
@@ -96,6 +103,7 @@ public class ShaderCode {
         switch (type) {
             case GL2ES2.GL_VERTEX_SHADER:
             case GL2ES2.GL_FRAGMENT_SHADER:
+            case GL3.GL_GEOMETRY_SHADER:
                 break;
             default:
                 throw new GLException("Unknown shader type: "+type);
@@ -114,7 +122,7 @@ public class ShaderCode {
     }
 
     /**
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param count number of shaders
      * @param binary binary buffer containing the shader binaries, 
      */
@@ -122,6 +130,7 @@ public class ShaderCode {
         switch (type) {
             case GL2ES2.GL_VERTEX_SHADER:
             case GL2ES2.GL_FRAGMENT_SHADER:
+            case GL3.GL_GEOMETRY_SHADER:
                 break;
             default:
                 throw new GLException("Unknown shader type: "+type);
@@ -139,7 +148,7 @@ public class ShaderCode {
      * which location is resolved using the <code>context</code> class, see {@link #readShaderSource(Class, String)}.
      * 
      * @param gl current GL object to determine whether a shader compiler is available. If null, no validation is performed.
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param count number of shaders
      * @param context class used to help resolving the source location
      * @param sourceFiles array of source locations, organized as <code>sourceFiles[count]</code>
@@ -183,7 +192,7 @@ public class ShaderCode {
      * Creates a complete {@link ShaderCode} object while reading the shader binary of <code>binaryFile</code>,
      * which location is resolved using the <code>context</code> class, see {@link #readShaderBinary(Class, String)}.
      * 
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param count number of shaders
      * @param context class used to help resolving the source location
      * @param binFormat a valid native binary format as they can be queried by {@link ShaderUtil#getShaderBinaryFormats(GL)}.
@@ -215,13 +224,15 @@ public class ShaderCode {
      * <ul>
      *   <li>Source<ul>
      *     <li>{@link GL2ES2#GL_VERTEX_SHADER vertex}: {@link #SUFFIX_VERTEX_SOURCE}</li>
-     *     <li>{@link GL2ES2#GL_FRAGMENT_SHADER fragment}: {@link #SUFFIX_FRAGMENT_SOURCE}</li></ul></li>
+     *     <li>{@link GL2ES2#GL_FRAGMENT_SHADER fragment}: {@link #SUFFIX_FRAGMENT_SOURCE}</li>
+     *     <li>{@link GL3#GL_GEOMETRY_SHADER geometry}: {@link #SUFFIX_GEOMETRY_SOURCE}</li></ul></li>
      *   <li>Binary<ul>
      *     <li>{@link GL2ES2#GL_VERTEX_SHADER vertex}: {@link #SUFFIX_VERTEX_BINARY}</li>
-     *     <li>{@link GL2ES2#GL_FRAGMENT_SHADER fragment}: {@link #SUFFIX_FRAGMENT_BINARY}</li></ul></li>
+     *     <li>{@link GL2ES2#GL_FRAGMENT_SHADER fragment}: {@link #SUFFIX_FRAGMENT_BINARY}</li>
+     *     <li>{@link GL3#GL_GEOMETRY_SHADER geometry}: {@link #SUFFIX_GEOMETRY_BINARY}</li></ul></li>
      * </ul> 
      * @param binary true for a binary resource, false for a source resource 
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * 
      * @throws GLException if <code>type</code> is not supported
      * 
@@ -233,6 +244,8 @@ public class ShaderCode {
                 return binary?SUFFIX_VERTEX_BINARY:SUFFIX_VERTEX_SOURCE;
             case GL2ES2.GL_FRAGMENT_SHADER:
                 return binary?SUFFIX_FRAGMENT_BINARY:SUFFIX_FRAGMENT_SOURCE;
+            case GL3.GL_GEOMETRY_SHADER:
+                return binary?SUFFIX_GEOMETRY_BINARY:SUFFIX_GEOMETRY_SOURCE;
             default:
                 throw new GLException("illegal shader type: "+type);
         }
@@ -311,7 +324,7 @@ public class ShaderCode {
      * 
      * @param gl current GL object to determine whether a shader compiler is available (if <code>source</code> is used),
      *           or to determine the shader binary format (if <code>binary</code> is used).
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param count number of shaders
      * @param context class used to help resolving the source and binary location
      * @param srcRoot relative <i>root</i> path for <code>srcBasenames</code>
@@ -411,7 +424,7 @@ public class ShaderCode {
      * 
      * @param gl current GL object to determine whether a shader compiler is available (if <code>source</code> is used),
      *           or to determine the shader binary format (if <code>binary</code> is used).
-     * @param type either {@link GL2ES2#GL_VERTEX_SHADER} or {@link GL2ES2#GL_FRAGMENT_SHADER}
+     * @param type either {@link GL2ES2#GL_VERTEX_SHADER}, {@link GL2ES2#GL_FRAGMENT_SHADER} or {@link GL3#GL_GEOMETRY_SHADER}
      * @param context class used to help resolving the source and binary location
      * @param srcRoot relative <i>root</i> path for <code>basename</code>
      * @param binRoot relative <i>root</i> path for <code>basename</code>
@@ -447,6 +460,8 @@ public class ShaderCode {
                 return "VERTEX_SHADER";
             case GL2ES2.GL_FRAGMENT_SHADER:
                 return "FRAGMENT_SHADER";
+            case GL3.GL_GEOMETRY_SHADER:
+                return "GEOMETRY_SHADER";
         }
         return "UNKNOWN_SHADER";
     }
diff --git a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderUtil.java b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderUtil.java
index 5afc5e38c..eceeea6db 100644
--- a/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderUtil.java
+++ b/src/jogl/classes/com/jogamp/opengl/util/glsl/ShaderUtil.java
@@ -40,6 +40,7 @@ import java.util.*;
 import javax.media.opengl.*;
 
 import com.jogamp.common.nio.Buffers;
+import com.jogamp.opengl.GLExtensions;
 
 public class ShaderUtil {
     public static String getShaderInfoLog(GL _gl, int shaderObj) {
@@ -210,6 +211,13 @@ public class ShaderUtil {
         }
         return info.shaderCompilerAvailable.booleanValue();
     }
+    
+    /** Returns true if GeometryShader is supported, i.e. whether GLContext is &ge; 3.2 or ARB_geometry_shader4 extension is available. */ 
+    public static boolean isGeometryShaderSupported(GL _gl) {
+      final GLContext ctx = _gl.getContext();
+      return ctx.getGLVersionNumber().compareTo(GLContext.Version32) >= 0 ||
+             ctx.isExtensionAvailable(GLExtensions.ARB_geometry_shader4);
+    }
 
     public static void shaderSource(GL _gl, int shader, CharSequence[] source)
     {
diff --git a/src/jogl/classes/javax/media/opengl/GLContext.java b/src/jogl/classes/javax/media/opengl/GLContext.java
index 461d481a8..8cc29f1f2 100644
--- a/src/jogl/classes/javax/media/opengl/GLContext.java
+++ b/src/jogl/classes/javax/media/opengl/GLContext.java
@@ -116,6 +116,15 @@ public abstract class GLContext {
   /** Indicates that a newly-created context was made current during the last call to {@link #makeCurrent makeCurrent}. */
   public static final int CONTEXT_CURRENT_NEW = 2;
 
+  /** Version 3.2. As an OpenGL version, it qualifies for geometry shader */
+  public static final VersionNumber Version32 = new VersionNumber(3, 2, 0);
+  
+  /** Version 3.1. As an OpenGL version, it qualifies for {@link #isGL3core()}, {@link #isGL3bc()} and {@link #isGL3()} */
+  public static final VersionNumber Version31 = new VersionNumber(3, 1, 0);
+  
+  /** Version 3.0. As an OpenGL version, it qualifies for {@link #isGL2()} only */
+  public static final VersionNumber Version30 = new VersionNumber(3, 0, 0);
+  
   /** <code>ARB_create_context</code> related: created via ARB_create_context. Cache key value. See {@link #getAvailableContextProperties(AbstractGraphicsDevice, GLProfile)}. */
   protected static final int CTX_IS_ARB_CREATED  = 1 <<  0;
   /** <code>ARB_create_context</code> related: desktop compatibility profile. Cache key value. See {@link #isGLCompatibilityProfile()}, {@link #getAvailableContextProperties(AbstractGraphicsDevice, GLProfile)}. */
@@ -156,8 +165,7 @@ public abstract class GLContext {
       resetStates();
   }
 
-  protected int ctxMajorVersion;
-  protected int ctxMinorVersion;
+  protected VersionNumber ctxVersion;
   protected int ctxOptions;
   protected String ctxVersionString;
   protected VersionNumber ctxGLSLVersion;
@@ -172,8 +180,7 @@ public abstract class GLContext {
         System.err.println(getThreadName() + ": GLContext.resetStates()");
         // Thread.dumpStack();
       }
-      ctxMajorVersion=-1;
-      ctxMinorVersion=-1;
+      ctxVersion = new VersionNumber(-1, -1, -1);
       ctxOptions=0;
       ctxVersionString=null;
       ctxGLSLVersion=null;
@@ -629,8 +636,15 @@ public abstract class GLContext {
     return ctxVersionString;
   }
 
-  public final int getGLVersionMajor() { return ctxMajorVersion; }
-  public final int getGLVersionMinor() { return ctxMinorVersion; }
+  /** @deprecated Use {@link #getGLVersionNumber()} */
+  public final int getGLVersionMajor() { return ctxVersion.getMajor(); }
+  /** @deprecated Use {@link #getGLVersionNumber()} */
+  public final int getGLVersionMinor() { return ctxVersion.getMinor(); }
+  /**
+   * Returns this context OpenGL version. 
+   * @see #getGLSLVersionNumber() 
+   **/
+  public final VersionNumber getGLVersionNumber() { return ctxVersion; }
   public final boolean isGLCompatibilityProfile() { return ( 0 != ( CTX_PROFILE_COMPAT & ctxOptions ) ); }
   public final boolean isGLCoreProfile()          { return ( 0 != ( CTX_PROFILE_CORE   & ctxOptions ) ); }
   public final boolean isGLForwardCompatible()    { return ( 0 != ( CTX_OPTION_FORWARD & ctxOptions ) ); }
@@ -659,8 +673,7 @@ public abstract class GLContext {
    * 
    * @param GLSL version number if context has been made current at least once, otherwise <code>null</code>.
    *            
-   * @see #getGLVersionMajor()
-   * @see #getGLVersionMinor()
+   * @see #getGLVersionNumber()
    */
   public final VersionNumber getGLSLVersionNumber() {
       return ctxGLSLVersion;
@@ -733,7 +746,7 @@ public abstract class GLContext {
   public final boolean hasGLSL() {
       return isGLES2() ||
              isGL3() ||
-             isGL2() && ctxMajorVersion>1 ;
+             isGL2() && ctxVersion.getMajor()>1 ;
   }
 
   /** 
@@ -810,46 +823,46 @@ public abstract class GLContext {
 
   /** @see GLProfile#isGL4bc() */
   public final boolean isGL4bc() {
-      return ctxMajorVersion>=4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
-                                && 0 != (ctxOptions & CTX_PROFILE_COMPAT);
+      return ctxVersion.getMajor() >= 4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
+                                        && 0 != (ctxOptions & CTX_PROFILE_COMPAT);
   }
 
   /** @see GLProfile#isGL4() */
   public final boolean isGL4() {
-      return ctxMajorVersion>=4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
-                                && 0 != (ctxOptions & (CTX_PROFILE_COMPAT|CTX_PROFILE_CORE));
+      return ctxVersion.getMajor() >= 4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
+                                        && 0 != (ctxOptions & (CTX_PROFILE_COMPAT|CTX_PROFILE_CORE));
   }
 
   /** Indicates whether this profile is capable of GL4 (core only). <p>Includes [ GL4 ].</p> */
   public final boolean isGL4core() {
-      return ctxMajorVersion>=4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
-                                && 0 != (ctxOptions & CTX_PROFILE_CORE);
+      return ctxVersion.getMajor() >= 4 && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
+                                        && 0 != (ctxOptions & CTX_PROFILE_CORE);
   }
   
   /** @see GLProfile#isGL3bc() */
   public final boolean isGL3bc() {
-      return ( ctxMajorVersion>3 || ctxMajorVersion==3 && ctxMinorVersion>=1 )
+      return ctxVersion.compareTo(Version31) >= 0
              && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
              && 0 != (ctxOptions & CTX_PROFILE_COMPAT);
   }
 
   /** @see GLProfile#isGL3() */
   public final boolean isGL3() {
-      return ( ctxMajorVersion>3 || ctxMajorVersion==3 && ctxMinorVersion>=1 )
+      return ctxVersion.compareTo(Version31) >= 0
              && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
              && 0 != (ctxOptions & (CTX_PROFILE_COMPAT|CTX_PROFILE_CORE));
   }
   
-  /** Indicates whether this profile is capable of GL3 (core only). <p>Includes [ GL4, GL3 ].</p> */
+  /** Indicates whether this profile is capable of GL3 (core only). GL3 starts w/ OpenGL 3.1 <p>Includes [ GL4, GL3 ].</p> */
   public final boolean isGL3core() {
-      return ( ctxMajorVersion>3 || ctxMajorVersion==3 && ctxMinorVersion>=1 )
+      return ctxVersion.compareTo(Version31) >= 0
              && 0 != (ctxOptions & CTX_IS_ARB_CREATED)
              && 0 != (ctxOptions & CTX_PROFILE_CORE);
   }
   
   /** @see GLProfile#isGL2() */
   public final boolean isGL2() {
-      return ctxMajorVersion>=1 && 0!=(ctxOptions & CTX_PROFILE_COMPAT);
+      return ctxVersion.getMajor()>=1 && 0!=(ctxOptions & CTX_PROFILE_COMPAT);
   }
 
   /** @see GLProfile#isGL2GL3() */  
@@ -859,12 +872,12 @@ public abstract class GLContext {
 
   /** @see GLProfile#isGLES1() */
   public final boolean isGLES1() {
-      return ctxMajorVersion==1 && 0 != ( ctxOptions & CTX_PROFILE_ES ) ;
+      return ctxVersion.getMajor() == 1 && 0 != ( ctxOptions & CTX_PROFILE_ES ) ;
   }
 
   /** @see GLProfile#isGLES2() */
   public final boolean isGLES2() {
-      return ctxMajorVersion==2 && 0 != ( ctxOptions & CTX_PROFILE_ES ) ;
+      return ctxVersion.getMajor() == 2 && 0 != ( ctxOptions & CTX_PROFILE_ES ) ;
   }
 
   /** @see GLProfile#isGLES() */
diff --git a/src/jogl/classes/jogamp/opengl/GLContextImpl.java b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
index 36aaeb597..d960883d5 100644
--- a/src/jogl/classes/jogamp/opengl/GLContextImpl.java
+++ b/src/jogl/classes/jogamp/opengl/GLContextImpl.java
@@ -568,7 +568,7 @@ public abstract class GLContextImpl extends GLContext {
         final boolean created;
         try {
             created = createImpl(shareWith); // may throws exception if fails!
-            if( created && isGL3core() && ( ctxMajorVersion>3 || ctxMajorVersion==3 && ctxMinorVersion>=1 ) ) {
+            if( created && isGL3core() ) {
                 // Due to GL 3.1 core spec: E.1. DEPRECATED AND REMOVED FEATURES (p 296),
                 //        GL 3.2 core spec: E.2. DEPRECATED AND REMOVED FEATURES (p 331)
                 // there is no more default VAO buffer 0 bound, hence generating and binding one
@@ -606,10 +606,10 @@ public abstract class GLContextImpl extends GLContext {
                 if( 0 == ( ctxOptions & GLContext.CTX_PROFILE_ES) ) {   // not ES profile
                     final int reqMajor;
                     final int reqProfile;
-                    if(ctxMajorVersion<3 || ctxMajorVersion==3 && ctxMinorVersion==0) {
+                    if( ctxVersion.compareTo(Version30) <= 0 ) {
                         reqMajor = 2;
                     } else {
-                        reqMajor = ctxMajorVersion;
+                        reqMajor = ctxVersion.getMajor();
                     }
                     if( 0 != ( ctxOptions & GLContext.CTX_PROFILE_CORE) ) {
                         reqProfile = GLContext.CTX_PROFILE_CORE;
@@ -617,7 +617,7 @@ public abstract class GLContextImpl extends GLContext {
                         reqProfile = GLContext.CTX_PROFILE_COMPAT;
                     }
                     GLContext.mapAvailableGLVersion(device, reqMajor, reqProfile,
-                                                    ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                                                    ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                     GLContext.setAvailableGLVersionsSet(device);
                     
                     if (DEBUG) {
@@ -780,7 +780,7 @@ public abstract class GLContextImpl extends GLContext {
             success |= hasGL4;
             if(hasGL4) {
                 // Map all lower compatible profiles: GL3
-                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE,   ctxMajorVersion, ctxMinorVersion, ctxOptions);                
+                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);                
                 if(PROFILE_ALIASING) {
                     hasGL3   = true;
                 }
@@ -799,13 +799,13 @@ public abstract class GLContextImpl extends GLContext {
             success |= hasGL4bc;
             if(hasGL4bc) {
                 // Map all lower compatible profiles: GL3bc, GL2, GL4, GL3
-                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_COMPAT, ctxMajorVersion, ctxMinorVersion, ctxOptions);
-                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
+                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                 if(!hasGL4) {
-                    GLContext.mapAvailableGLVersion(device, 4, CTX_PROFILE_CORE,   ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                    GLContext.mapAvailableGLVersion(device, 4, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                 }
                 if(!hasGL3) {
-                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE,   ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                 }
                 if(PROFILE_ALIASING) {
                     hasGL3bc = true;
@@ -821,9 +821,9 @@ public abstract class GLContextImpl extends GLContext {
             success |= hasGL3bc;
             if(hasGL3bc) {
                 // Map all lower compatible profiles: GL2 and GL3
-                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                GLContext.mapAvailableGLVersion(device, 2, CTX_PROFILE_COMPAT, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                 if(!hasGL3) {
-                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE,   ctxMajorVersion, ctxMinorVersion, ctxOptions);
+                    GLContext.mapAvailableGLVersion(device, 3, CTX_PROFILE_CORE, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
                 }
                 if(PROFILE_ALIASING) {
                     hasGL2   = true;
@@ -915,7 +915,7 @@ public abstract class GLContextImpl extends GLContext {
         AbstractGraphicsDevice device = drawable.getNativeSurface().getGraphicsConfiguration().getScreen().getDevice();
         // ctxMajorVersion, ctxMinorVersion, ctxOptions is being set by
         //   createContextARBVersions(..) -> setGLFunctionAvailbility(..) -> setContextVersion(..)
-        GLContext.mapAvailableGLVersion(device, reqMajor, reqProfile, ctxMajorVersion, ctxMinorVersion, ctxOptions);
+        GLContext.mapAvailableGLVersion(device, reqMajor, reqProfile, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
         destroyContextARBImpl(_context);
         if (DEBUG) {
           System.err.println(getThreadName() + ": createContextARB-MapVersionsAvailable HAVE: " +reqMajor+"."+reqProfile+ " -> "+getGLVersion());
@@ -978,13 +978,12 @@ public abstract class GLContextImpl extends GLContext {
       if (!GLContext.isValidGLVersion(major, minor)) {
         throw new GLException("Invalid GL Version "+major+"."+minor+", ctp "+toHexString(ctp));
       }
-      ctxMajorVersion = major;
-      ctxMinorVersion = minor;
+      ctxVersion = new VersionNumber(major, minor, 0);
       ctxOptions = ctp;
       if(setVersionString) {
-          ctxVersionString = getGLVersion(ctxMajorVersion, ctxMinorVersion, ctxOptions, gl.glGetString(GL.GL_VERSION));
+          ctxVersionString = getGLVersion(major, minor, ctxOptions, gl.glGetString(GL.GL_VERSION));
           ctxGLSLVersion = null;
-          if(ctxMajorVersion >= 2) { // >= ES2 || GL2.0
+          if(major >= 2) { // >= ES2 || GL2.0
               final String glslVersion = gl.glGetString(GL2ES2.GL_SHADING_LANGUAGE_VERSION);
               if( null != glslVersion ) {
                   ctxGLSLVersion = new VersionNumber(glslVersion, ".");
@@ -995,7 +994,7 @@ public abstract class GLContextImpl extends GLContext {
           } 
           if( null == ctxGLSLVersion ){
               final int[] sver = new int[2];
-              getStaticGLSLVersionNumber(ctxMajorVersion, ctxMinorVersion, ctxOptions, sver);
+              getStaticGLSLVersionNumber(major, minor, ctxOptions, sver);
               ctxGLSLVersion = new VersionNumber(sver[0], sver[1], 0);
           }
       }
@@ -1424,7 +1423,7 @@ public abstract class GLContextImpl extends GLContext {
     final int glErrX = gl.glGetError(); // clear GL error, maybe caused by above operations
     
     if(DEBUG) {
-        System.err.println(getThreadName() + ": GLContext.setGLFuncAvail.X: OK "+contextFQN+" - "+GLContext.getGLVersion(ctxMajorVersion, ctxMinorVersion, ctxOptions, null)+" - glErr "+toHexString(glErrX));
+        System.err.println(getThreadName() + ": GLContext.setGLFuncAvail.X: OK "+contextFQN+" - "+GLContext.getGLVersion(ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions, null)+" - glErr "+toHexString(glErrX));
     }
     return true;
   }
diff --git a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
index bd8e7dee9..572888bae 100644
--- a/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
+++ b/src/jogl/classes/jogamp/opengl/egl/EGLContext.java
@@ -281,7 +281,7 @@ public abstract class EGLContext extends GLContextImpl {
     //
     
     /* pp */ void mapCurrentAvailableGLVersion(AbstractGraphicsDevice device) {
-        mapStaticGLVersion(device, ctxMajorVersion, ctxMinorVersion, ctxOptions);
+        mapStaticGLVersion(device, ctxVersion.getMajor(), ctxVersion.getMinor(), ctxOptions);
     }
     /* pp */ int getContextOptions() { return ctxOptions; }    
     /* pp */ static void mapStaticGLESVersion(AbstractGraphicsDevice device, GLCapabilitiesImmutable caps) {
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/GeomShader01TextureGL3.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/GeomShader01TextureGL3.java
new file mode 100644
index 000000000..929491187
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/GeomShader01TextureGL3.java
@@ -0,0 +1,293 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.opengl.test.junit.jogl.demos.gl3;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URLConnection;
+import java.nio.FloatBuffer;
+
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2ES2;
+import javax.media.opengl.GL3;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.GLEventListener;
+import javax.media.opengl.GLException;
+import javax.media.opengl.GLUniformData;
+import javax.media.opengl.fixedfunc.GLMatrixFunc;
+
+import com.jogamp.common.util.IOUtil;
+import com.jogamp.opengl.util.GLArrayDataServer;
+import com.jogamp.opengl.util.PMVMatrix;
+import com.jogamp.opengl.util.glsl.ShaderCode;
+import com.jogamp.opengl.util.glsl.ShaderProgram;
+import com.jogamp.opengl.util.glsl.ShaderState;
+import com.jogamp.opengl.util.glsl.ShaderUtil;
+import com.jogamp.opengl.util.texture.Texture;
+import com.jogamp.opengl.util.texture.TextureCoords;
+import com.jogamp.opengl.util.texture.TextureData;
+import com.jogamp.opengl.util.texture.TextureIO;
+
+/**
+ * JOGL Geometry ShaderCode test case using OpenGL 3.2 core profile features only.
+ * <p>
+ * Demonstrates <code>pass through</code> and <code>XYZ flipping</code>
+ * geometry shader.
+ * </p>
+ * <p>
+ * If the <code>XYZ flipping</code> geometry shader functions properly, 
+ * the texture will be flipped horizontally and vertically.
+ * </p> 
+ * 
+ * @author Chuck Ritola December 2012
+ * @author Sven Gothel (GL3 core, pass-though, core geometry shader)
+ */
+public class GeomShader01TextureGL3 implements GLEventListener  {
+    private final int geomShader;
+    private Texture texture;
+    private ShaderState st;
+    private PMVMatrix pmvMatrix;
+    private GLUniformData pmvMatrixUniform;
+    private GLArrayDataServer interleavedVBO;
+
+    static final String shaderBasename = "texture01_xxx";
+    static final String[] geomShaderBaseNames = new String[] { "passthrough01_xxx", "flipXYZ01_xxx" };
+    
+    public GeomShader01TextureGL3(int geomShader) {
+        this.geomShader = geomShader;
+    }
+
+    @Override
+    public void init(GLAutoDrawable drawable) {
+        {
+            final GL gl = drawable.getGL();
+            System.err.println("Init - START - useGeomShader "+geomShader+" -> "+geomShaderBaseNames[geomShader]);
+            System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR));
+            System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER));
+            System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION));
+            System.err.println("GL GLSL: "+gl.hasGLSL()+", has-compiler: "+gl.isFunctionAvailable("glCompileShader")+", version "+(gl.hasGLSL() ? gl.glGetString(GL2ES2.GL_SHADING_LANGUAGE_VERSION) : "none"));
+            System.err.println("GL Profile: "+gl.getGLProfile());
+            System.err.println("GL Renderer Quirks:" + gl.getContext().getRendererQuirks().toString());
+            System.err.println("GL:" + gl + ", " + gl.getContext().getGLVersion());
+            if( !gl.isGL3() ) {
+                throw new RuntimeException("GL object not a GL3 core compatible profile: "+gl);
+            }
+            if( !ShaderUtil.isGeometryShaderSupported(gl) ) {
+                throw new RuntimeException("GL object not >= 3.2, i.e. no geometry shader support.: "+gl);
+            }
+        }        
+        final GL3 gl = drawable.getGL().getGL3();
+
+        final ShaderProgram sp;
+        {
+            final ShaderCode vs, gs, fs;
+            vs = ShaderCode.create(gl, GL2ES2.GL_VERTEX_SHADER, this.getClass(), 
+                                   "shader", "shader/bin", shaderBasename, true);
+            gs = ShaderCode.create(gl, GL3.GL_GEOMETRY_SHADER, this.getClass(), 
+                                   "shader", "shader/bin", geomShaderBaseNames[geomShader], true);
+            fs = ShaderCode.create(gl, GL2ES2.GL_FRAGMENT_SHADER, this.getClass(), 
+                                   "shader", "shader/bin", shaderBasename, true);        
+            vs.defaultShaderCustomization(gl, true, null);
+            gs.defaultShaderCustomization(gl, true, null);
+            fs.defaultShaderCustomization(gl, true, null);
+            
+            sp = new ShaderProgram();
+            sp.add(gl, vs, System.err);
+            sp.add(gl, gs, System.err);
+            sp.add(gl, fs, System.err);
+            if(!sp.link(gl, System.err)) {
+                throw new GLException("Couldn't link program: "+sp);
+            }
+        }
+        
+        st=new ShaderState();
+        st.attachShaderProgram(gl, sp, true);
+        
+        // setup mgl_PMVMatrix
+        pmvMatrix = new PMVMatrix();
+        pmvMatrix.glMatrixMode(PMVMatrix.GL_PROJECTION);
+        pmvMatrix.glLoadIdentity();
+        pmvMatrix.glMatrixMode(PMVMatrix.GL_MODELVIEW);
+        pmvMatrix.glLoadIdentity();       
+        pmvMatrixUniform = new GLUniformData("mgl_PMVMatrix", 4, 4, pmvMatrix.glGetPMvMatrixf()); // P, Mv
+        st.ownUniform(pmvMatrixUniform);
+        st.uniform(gl, pmvMatrixUniform);        
+        
+        st.ownUniform(pmvMatrixUniform);
+        if(!st.uniform(gl, pmvMatrixUniform)) {
+            throw new GLException("Error setting PMVMatrix in shader: "+st);
+        }
+        if(!st.uniform(gl, new GLUniformData("mgl_ActiveTexture", 0))) {
+            throw new GLException("Error setting mgl_ActiveTexture in shader: "+st);
+        }
+
+        try {
+            texture = createTestTexture(gl);
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        if(null == texture) {
+            throw new RuntimeException("Could not load test texture");
+        }
+        
+        // Tri order:
+        //   TL, BL, BR
+        //   TL, TR, BR
+        {
+            int i=0;
+            TextureCoords tc = texture.getImageTexCoords();        
+            s_triTexCoords[i++] = tc.left();  s_triTexCoords[i++] = tc.top();
+            s_triTexCoords[i++] = tc.left();  s_triTexCoords[i++] = tc.bottom();
+            s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.bottom();
+            s_triTexCoords[i++] = tc.left();  s_triTexCoords[i++] = tc.top();
+            s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.top();
+            s_triTexCoords[i++] = tc.right(); s_triTexCoords[i++] = tc.bottom();
+        }
+        
+        interleavedVBO = GLArrayDataServer.createGLSLInterleaved(2+4+2, GL.GL_FLOAT, false, 3*6, GL.GL_STATIC_DRAW);
+        {        
+            interleavedVBO.addGLSLSubArray("mgl_Vertex",        2, GL.GL_ARRAY_BUFFER);
+            interleavedVBO.addGLSLSubArray("mgl_Color",         4, GL.GL_ARRAY_BUFFER);
+            interleavedVBO.addGLSLSubArray("mgl_MultiTexCoord", 2, GL.GL_ARRAY_BUFFER);
+
+            FloatBuffer ib = (FloatBuffer)interleavedVBO.getBuffer();
+            
+            for(int i=0; i<6; i++) {
+                ib.put(s_triVertices,  i*2, 2);
+                ib.put(s_triColors,    i*4, 4);
+                ib.put(s_triTexCoords, i*2, 2);
+            }                        
+        }
+        interleavedVBO.seal(gl, true);
+        interleavedVBO.enableBuffer(gl, false);
+        st.ownAttribute(interleavedVBO, true);
+        
+        gl.glClearColor(0f, 0f, 0f, 0f);
+        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+        st.useProgram(gl, false);
+    }
+
+    private Texture createTestTexture(GL3 gl) throws IOException  {
+        final URLConnection urlConn = IOUtil.getResource(this.getClass(), "../../util/texture/test-ntscI01-160x90.png");
+        if(null == urlConn) { return null; }
+        final InputStream istream = urlConn.getInputStream();
+        if(null == istream) { return null; }
+        final TextureData texData = TextureIO.newTextureData(gl.getGLProfile(), istream, false /* mipmap */, TextureIO.PNG);
+        final Texture res = TextureIO.newTexture(gl, texData);
+        texData.destroy();
+        return res;
+    }
+    
+    @Override
+    public void dispose(GLAutoDrawable drawable) {
+        final GL3 gl = drawable.getGL().getGL3();
+        if(null!=texture) {
+            texture.disable(gl);
+            texture.destroy(gl);
+        }
+
+        if(null != st) {
+            pmvMatrixUniform = null;
+            pmvMatrix.destroy();
+            pmvMatrix=null;
+            st.destroy(gl);
+            st=null;
+        }
+    }
+    
+    @Override
+    public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
+        GL3 gl = drawable.getGL().getGL3();
+        
+        gl.setSwapInterval(1);
+        
+        // Clear background to white
+        gl.glClearColor(1.0f, 1.0f, 1.0f, 0.4f);
+
+        if(null != st) {
+            pmvMatrix.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
+            pmvMatrix.glLoadIdentity();
+            pmvMatrix.glOrthof(-1.0f, 1.0f, -1.0f, 1.0f, 0.0f, 10.0f);
+    
+            pmvMatrix.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
+            pmvMatrix.glLoadIdentity();
+            
+            st.useProgram(gl, true);
+            st.uniform(gl, pmvMatrixUniform);
+            st.useProgram(gl, false);
+        }        
+    }
+    
+    @Override
+    public void display(GLAutoDrawable drawable)  {
+        final GL3 gl = drawable.getGL().getGL3();
+        
+        gl.glClear(GL.GL_DEPTH_BUFFER_BIT | GL.GL_COLOR_BUFFER_BIT);
+
+        if(null != st) {
+            //Draw the image as a pseudo-quad using two triangles
+            st.useProgram(gl, true);        
+            interleavedVBO.enableBuffer(gl, true);
+            gl.glActiveTexture(GL.GL_TEXTURE0);
+            texture.enable(gl);
+            texture.bind(gl);
+            
+            gl.glDrawArrays(GL.GL_TRIANGLES, 0, 6);
+            
+            texture.disable(gl);                                
+            interleavedVBO.enableBuffer(gl, false);        
+            st.useProgram(gl, false);
+        }
+    }//end display()
+    
+    private static final float[] s_triVertices = { 
+           -1f,  1f, // TL
+           -1f, -1f, // BL
+            1f, -1f, // BR   
+           -1f,  1f, // TL
+            1f,  1f, // TR
+            1f, -1f  // BR
+    };
+    private static final float[] s_triColors = {
+            1f, 1f, 1f, 1f,
+            1f, 1f, 1f, 1f,
+            1f, 1f, 1f, 1f,
+            1f, 1f, 1f, 1f,
+            1f, 1f, 1f, 1f,
+            1f, 1f, 1f, 1f
+    };
+    private static final float[] s_triTexCoords = { 
+            0f, 1f, // TL
+            0f, 0f, // BL
+            1f, 0f, // BR   
+            0f, 1f, // TL
+            1f, 1f, // TR
+            1f, 0f  // BR
+    };
+    
+}//end Test
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/newt/TestGeomShader01TextureGL3NEWT.java b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/newt/TestGeomShader01TextureGL3NEWT.java
new file mode 100644
index 000000000..71c0ae7ac
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/newt/TestGeomShader01TextureGL3NEWT.java
@@ -0,0 +1,126 @@
+/**
+ * Copyright 2013 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ * 
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ * 
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+package com.jogamp.opengl.test.junit.jogl.demos.gl3.newt;
+
+import java.io.IOException;
+
+import javax.media.opengl.GLCapabilities;
+import javax.media.opengl.GLProfile;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.jogamp.newt.opengl.GLWindow;
+import com.jogamp.opengl.test.junit.jogl.demos.gl3.GeomShader01TextureGL3;
+import com.jogamp.opengl.test.junit.util.MiscUtils;
+import com.jogamp.opengl.test.junit.util.QuitAdapter;
+import com.jogamp.opengl.test.junit.util.UITestCase;
+import com.jogamp.opengl.util.Animator;
+
+/**
+ * Test Geometry shader demo GeomShader01TextureGL3
+ */
+public class TestGeomShader01TextureGL3NEWT extends UITestCase {
+    static long duration = 500; // ms
+
+    static GLCapabilities getCaps(String profile) {
+        if( !GLProfile.isAvailable(profile) )  {
+            System.err.println("Profile "+profile+" n/a");
+            return null;
+        }
+        return new GLCapabilities(GLProfile.get(profile));
+    }
+    
+    @Test
+    public void test01_GL3Core_Passthrough() throws InterruptedException {
+        GLCapabilities caps = getCaps(GLProfile.GL3);
+        if( null == caps ) { return; }
+        testImpl(caps, 0);
+    }
+    
+    @Test
+    public void test02_GL3Core_FlipXYZ() throws InterruptedException {
+        GLCapabilities caps = getCaps(GLProfile.GL3);
+        if( null == caps ) { return; }
+        testImpl(caps, 1);
+    }
+    
+    @Test
+    public void test11_GL3Compat_Passthrough() throws InterruptedException {
+        GLCapabilities caps = getCaps(GLProfile.GL3bc);
+        if( null == caps ) { return; }
+        testImpl(caps, 0);
+    }
+    
+    @Test
+    public void test12_GL3Compat_FlipXYZ() throws InterruptedException {
+        GLCapabilities caps = getCaps(GLProfile.GL3bc);
+        if( null == caps ) { return; }
+        testImpl(caps, 1);
+    }
+    
+    private void testImpl(GLCapabilities caps, int geomShader) throws InterruptedException {
+        GLWindow glWindow = GLWindow.create(caps);
+        Assert.assertNotNull(glWindow);
+        glWindow.setSize(800, 600);
+        glWindow.setVisible(true);
+        glWindow.setTitle("JOGL Geometry Shader Banana Test");
+        Assert.assertTrue(glWindow.isNativeValid());
+        
+        QuitAdapter quitAdapter = new QuitAdapter();
+        glWindow.addKeyListener(quitAdapter);
+        glWindow.addWindowListener(quitAdapter);
+        glWindow.addGLEventListener( new GeomShader01TextureGL3(geomShader) );
+        
+        final SnapshotGLEventListener snapshotGLEventListener = new SnapshotGLEventListener();
+        glWindow.addGLEventListener(snapshotGLEventListener);
+        
+        final Animator animator = new Animator(glWindow);
+        animator.start();
+        
+        animator.setUpdateFPSFrames(60, System.err);
+        snapshotGLEventListener.setMakeSnapshot();
+        
+        while(!quitAdapter.shouldQuit() && animator.isAnimating() && animator.getTotalFPSDuration()<duration) {
+            Thread.sleep(100);
+        }
+        
+        animator.stop();
+        glWindow.destroy();
+    }
+    
+    public static void main(String args[]) throws IOException {
+        for(int i=0; i<args.length; i++) {
+            if(args[i].equals("-time")) {
+                i++;
+                duration = MiscUtils.atol(args[i], duration);
+            }
+        }
+        org.junit.runner.JUnitCore.main(TestGeomShader01TextureGL3NEWT.class.getName());
+    }
+}
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/flipXYZ01_xxx.gp b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/flipXYZ01_xxx.gp
new file mode 100644
index 000000000..f65ffacdb
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/flipXYZ01_xxx.gp
@@ -0,0 +1,32 @@
+// Copyright 2012 JogAmp Community. All rights reserved.
+// Requires version >= 150
+
+layout (triangles) in;
+layout (triangle_strip, max_vertices=3) out;
+
+in VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} vp_data[3];
+
+out VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} gp_data;
+ 
+void main() 
+{ 
+  for(int i = 0; i < gl_in.length(); i++)
+  {
+     // copy attributes
+    gl_Position = vec4(gl_in[i].gl_Position.xyz*-1,1); // This line flips the coordinates.
+    gp_data.frontColor = vp_data[i].frontColor;
+    gp_data.texCoord = vp_data[i].texCoord;
+ 
+    // done with the vertex
+    EmitVertex();
+  }
+} 
+
+
+
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/passthrough01_xxx.gp b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/passthrough01_xxx.gp
new file mode 100644
index 000000000..588b72426
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/passthrough01_xxx.gp
@@ -0,0 +1,31 @@
+// Copyright 2012 JogAmp Community. All rights reserved.
+// Requires version >= 150
+
+layout (triangles) in;
+layout (triangle_strip, max_vertices=3) out;
+
+in VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} vp_data[3];
+
+out VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} gp_data;
+ 
+void main() 
+{ 
+  for(int i = 0; i < gl_in.length(); i++)
+  {
+     // copy attributes
+    gl_Position = gl_in[i].gl_Position;
+    gp_data.frontColor = vp_data[i].frontColor;
+    gp_data.texCoord = vp_data[i].texCoord;
+ 
+    // done with the vertex
+    EmitVertex();
+  }
+} 
+
+
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.fp b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.fp
new file mode 100644
index 000000000..61f4529ac
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.fp
@@ -0,0 +1,20 @@
+// Copyright 2012 JogAmp Community. All rights reserved.
+// Requires version >= 130
+
+in VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} gp_data;
+
+out vec4 mgl_FragColor;
+
+uniform sampler2D mgl_ActiveTexture;
+
+void main (void)
+{
+  vec4 texColor = texture(mgl_ActiveTexture, gp_data.texCoord);
+
+  // mix frontColor with texture ..
+  mgl_FragColor = vec4(gp_data.frontColor*texColor);
+}
+
diff --git a/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.vp b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.vp
new file mode 100644
index 000000000..b220c83f1
--- /dev/null
+++ b/src/test/com/jogamp/opengl/test/junit/jogl/demos/gl3/shader/texture01_xxx.vp
@@ -0,0 +1,20 @@
+// Copyright 2012 JogAmp Community. All rights reserved.
+// Requires version >= 130
+
+uniform mat4 mgl_PMVMatrix[2];
+
+in vec4  mgl_Vertex;
+in vec4  mgl_Color;
+in vec4  mgl_MultiTexCoord;
+
+out VertexData {
+    vec4 frontColor;
+    vec2 texCoord;
+} vp_data;
+
+void main(void)
+{
+  vp_data.frontColor = mgl_Color;
+  vp_data.texCoord = mgl_MultiTexCoord.st;
+  gl_Position = mgl_PMVMatrix[0] * mgl_PMVMatrix[1] * mgl_Vertex;
+}