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.

6 files changed, 522 insertions, 0 deletions

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;
+}