renamed package com.mbien.* in com.jogamp.* JOCL is now officially a JogAmp team player ;).

7 files changed, 607 insertions, 0 deletions

diff --git a/src/com/jogamp/opencl/gl/CLGLBuffer.java b/src/com/jogamp/opencl/gl/CLGLBuffer.java
new file mode 100644
index 00000000..c7f14c4c
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLBuffer.java
@@ -0,0 +1,77 @@
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CL;
+import com.jogamp.opencl.CLBuffer;
+import com.jogamp.opencl.CLContext;
+
+import java.nio.Buffer;
+import javax.media.opengl.GLContext;
+
+
+/**
+ * Shared buffer between OpenGL and OpenCL contexts.
+ * @author Michael Bien
+ */
+public final class CLGLBuffer<B extends Buffer> extends CLBuffer<B> implements CLGLObject {
+
+
+    /**
+     * The OpenGL object handle.
+     */
+    public final int GLID;
+
+    private CLGLBuffer(CLContext context, B directBuffer, long id, int glObject, int flags) {
+        super(context, directBuffer, id, flags);
+        this.GLID = glObject;
+    }
+
+
+    static <B extends Buffer> CLGLBuffer<B> create(CLContext context, B directBuffer, int flags, int glObject) {
+        checkBuffer(directBuffer, flags);
+        
+        CL cl = getCL(context);
+        int[] result = new int[1];
+        CLGLI clgli = (CLGLI)cl;
+        
+        long id = clgli.clCreateFromGLBuffer(context.ID, flags, glObject, result, 0);
+
+        return new CLGLBuffer<B>(context, directBuffer, id, glObject, flags);
+    }
+
+    static <B extends Buffer> void checkBuffer(B directBuffer, int flags) throws IllegalArgumentException {
+        if (directBuffer != null && !directBuffer.isDirect()) {
+            throw new IllegalArgumentException("buffer is not a direct buffer");
+        }
+        if (isHostPointerFlag(flags)) {
+            throw new IllegalArgumentException("CL_MEM_COPY_HOST_PTR or CL_MEM_USE_HOST_PTR can not be used with OpenGL Buffers.");
+        }
+    }
+
+    public int getGLObjectID() {
+        return GLID;
+    }
+
+    public GLObjectType getGLObjectType() {
+        return GLObjectType.GL_OBJECT_BUFFER;
+    }
+
+    @Override
+    public CLGLContext getContext() {
+        return (CLGLContext) super.getContext();
+    }
+
+    public GLContext getGLContext() {
+        return getContext().getGLContext();
+    }
+
+    @Override
+    public <T extends Buffer> CLGLBuffer<T> cloneWith(T directBuffer) {
+        return new CLGLBuffer<T>(context, directBuffer, ID, GLID, FLAGS);
+    }
+
+    @Override
+    public String toString() {
+        return "CLGLBuffer [id: " + ID+" glID: "+GLID+"]";
+    }
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLContext.java b/src/com/jogamp/opencl/gl/CLGLContext.java
new file mode 100644
index 00000000..92618729
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLContext.java
@@ -0,0 +1,250 @@
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CLContext;
+import com.jogamp.opencl.CLDevice;
+import java.nio.Buffer;
+import com.jogamp.opencl.CLMemory.Mem;
+import com.jogamp.opencl.CLPlatform;
+import com.jogamp.common.nio.PointerBuffer;
+import com.jogamp.opengl.impl.GLContextImpl;
+import com.jogamp.opengl.impl.macosx.cgl.MacOSXCGLContext;
+import com.jogamp.opengl.impl.windows.wgl.WindowsWGLContext;
+import com.jogamp.opengl.impl.x11.glx.X11GLXContext;
+import javax.media.nativewindow.DefaultGraphicsConfiguration;
+import javax.media.opengl.GLContext;
+
+import static com.jogamp.opencl.gl.CLGLI.*;
+
+/**
+ * OpenCL Context supporting JOGL-JOCL interoperablity.
+ * @author Michael Bien
+ */
+public final class CLGLContext extends CLContext {
+
+    final long glID;
+    private final GLContext glContext;
+
+    private CLGLContext(CLPlatform platform, GLContext glContext, long clContextID, long glContextID) {
+        super(platform, clContextID);
+        this.glID = glContextID;
+        this.glContext = glContext;
+    }
+
+    /**
+     * Creates a shared context on all available devices (CL_DEVICE_TYPE_ALL).
+     */
+    public static CLGLContext create(GLContext glContext) {
+        return create(glContext, (CLPlatform)null, CLDevice.Type.ALL);
+    }
+
+    /**
+     * Creates a shared context on the specified platform on all available devices (CL_DEVICE_TYPE_ALL).
+     */
+    public static CLGLContext create(GLContext glContext, CLPlatform platform) {
+        return create(glContext, platform, CLDevice.Type.ALL);
+    }
+
+    /**
+     * Creates a shared context on the specified platform and with the specified
+     * device types.
+     */
+    public static CLGLContext create(GLContext glContext, CLDevice.Type... deviceTypes) {
+        return create(glContext, null, deviceTypes);
+    }
+
+    /**
+     * Creates a shared context on the specified devices.
+     * The platform to be used is implementation dependent.
+     */
+    public static CLGLContext create(GLContext glContext, CLDevice... devices) {
+        return create(glContext, null, devices);
+    }
+
+    /**
+     * Creates a shared context on the specified platform and with the specified
+     * device types.
+     */
+    public static CLGLContext create(GLContext glContext, CLPlatform platform, CLDevice.Type... deviceTypes) {
+
+        if(platform == null) {
+            platform = CLPlatform.getDefault();
+        }
+
+        long[] glID = new long[1];
+        PointerBuffer properties = setupContextProperties(platform, glContext, glID);
+        long clID = createContextFromType(properties, toDeviceBitmap(deviceTypes));
+
+        return new CLGLContext(platform, glContext, clID, glID[0]);
+
+    }
+
+    /**
+     * Creates a shared context on the specified platform and with the specified
+     * devices.
+     */
+    public static CLGLContext create(GLContext glContext, CLPlatform platform, CLDevice... devices) {
+
+        if(platform == null) {
+            platform = CLPlatform.getDefault();
+        }
+
+        long[] glID = new long[1];
+        PointerBuffer properties = setupContextProperties(platform, glContext, glID);
+        long clID = createContext(properties, devices);
+
+        CLGLContext context = new CLGLContext(platform, glContext, clID, glID[0]);
+        if(devices != null) {
+            for (int i = 0; i < devices.length; i++) {
+                context.overrideContext(devices[i]);
+            }
+        }
+        return context;
+    }
+
+
+    private static PointerBuffer setupContextProperties(CLPlatform platform, GLContext glContext, long[] glID) {
+
+        if(platform == null) {
+            throw new RuntimeException("no OpenCL installation found");
+        }
+
+        GLContextImpl ctxImpl = (GLContextImpl)glContext;
+
+        DefaultGraphicsConfiguration config = (DefaultGraphicsConfiguration)ctxImpl.getDrawableImpl()
+             .getNativeWindow().getGraphicsConfiguration().getNativeGraphicsConfiguration();
+
+        PointerBuffer properties;
+        if(glContext instanceof X11GLXContext) {
+            properties = PointerBuffer.allocateDirect(7);
+            long handle = config.getScreen().getDevice().getHandle();
+            glID[0] = ((X11GLXContext)glContext).getContext();
+            properties.put(CL_GL_CONTEXT_KHR).put(glID[0])
+                      .put(CL_GLX_DISPLAY_KHR).put(handle)
+                      .put(CL_CONTEXT_PLATFORM).put(platform.ID);
+        }else if(glContext instanceof WindowsWGLContext) {
+            // TODO test on windows
+            //WIN32
+            //cl_context_properties props[] = {
+            //         CL_GL_CONTEXT_KHR, (cl_context_properties)0,
+            //         CL_WGL_HDC_KHR, (cl_context_properties)0,
+            //         CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform, 0};
+            properties = PointerBuffer.allocateDirect(7);
+            long handle = config.getScreen().getDevice().getHandle();
+            glID[0] = ((WindowsWGLContext)glContext).getHGLRC();
+            properties.put(CL_GL_CONTEXT_KHR).put(glID[0])
+                      .put(CL_WGL_HDC_KHR).put(handle)
+                      .put(CL_CONTEXT_PLATFORM).put(platform.ID);
+        }else if(glContext instanceof MacOSXCGLContext) {
+            // TODO test on mac
+            //MACOSX
+            //cl_context_properties props[] = {
+            //         CL_CGL_SHAREGROUP_KHR, (cl_context_properties)0,
+            //         CL_CONTEXT_PLATFORM, (cl_context_properties)cpPlatform, 0};
+            properties = PointerBuffer.allocateDirect(5);
+            glID[0] = ((MacOSXCGLContext)glContext).getCGLContext();
+            properties.put(CL_CGL_SHAREGROUP_KHR).put(glID[0])
+                      .put(CL_CONTEXT_PLATFORM).put(platform.ID);
+        }else{
+            throw new RuntimeException("unsupported GLContext: "+glContext);
+        }
+
+        return (PointerBuffer)properties.put(0).rewind(); // 0 terminated array
+    }
+
+    // Buffers
+    public final CLGLBuffer<?> createFromGLBuffer(int glBuffer, Mem... flags) {
+        return createFromGLBuffer(null, glBuffer, Mem.flagsToInt(flags));
+    }
+
+    public final CLGLBuffer<?> createFromGLBuffer(int glBuffer, int flags) {
+        return createFromGLBuffer(null, glBuffer, flags);
+    }
+
+    public final <B extends Buffer> CLGLBuffer<B> createFromGLBuffer(B directBuffer, int glBuffer, Mem... flags) {
+        return createFromGLBuffer(directBuffer, glBuffer, Mem.flagsToInt(flags));
+    }
+
+    public final <B extends Buffer> CLGLBuffer<B> createFromGLBuffer(B directBuffer, int glBuffer, int flags) {
+        CLGLBuffer<B> buffer = CLGLBuffer.create(this, directBuffer, flags, glBuffer);
+        memoryObjects.add(buffer);
+        return buffer;
+    }
+
+    // Renderbuffers
+    public final CLGLImage2d<?> createFromGLRenderbuffer(int glBuffer, Mem... flags) {
+        return createFromGLRenderbuffer(null, glBuffer, Mem.flagsToInt(flags));
+    }
+
+    public final CLGLImage2d<?> createFromGLRenderbuffer(int glBuffer, int flags) {
+        return createFromGLRenderbuffer(null, glBuffer, flags);
+    }
+
+    public final <B extends Buffer> CLGLImage2d<B> createFromGLRenderbuffer(B directBuffer, int glBuffer, Mem... flags) {
+        return createFromGLRenderbuffer(directBuffer, glBuffer, Mem.flagsToInt(flags));
+    }
+    
+    public final <B extends Buffer> CLGLImage2d<B> createFromGLRenderbuffer(B directBuffer, int glBuffer, int flags) {
+        CLGLImage2d<B> buffer = CLGLImage2d.createFromGLRenderbuffer(this, directBuffer, flags, glBuffer);
+        memoryObjects.add(buffer);
+        return buffer;
+    }
+    
+    //2d Textures
+    public final CLGLTexture2d<?> createFromGLTexture2d(int target, int texture, int mipmap, Mem... flags) {
+        return createFromGLTexture2d(null, target, texture, mipmap, Mem.flagsToInt(flags));
+    }
+
+    public final CLGLTexture2d<?> createFromGLTexture2d(int target, int texture, int mipmap, int flags) {
+        return createFromGLTexture2d(null, target, texture, mipmap, flags);
+    }
+
+    public final <B extends Buffer> CLGLTexture2d<B> createFromGLTexture2d(B directBuffer, int target, int texture, int mipmap, Mem... flags) {
+        return createFromGLTexture2d(directBuffer, target, texture, mipmap, Mem.flagsToInt(flags));
+    }
+    
+    public final <B extends Buffer> CLGLTexture2d<B> createFromGLTexture2d(B directBuffer, int target, int texture, int mipmap, int flags) {
+        CLGLTexture2d<B> buffer = CLGLTexture2d.createFromGLTexture2d(this, directBuffer, target, texture, mipmap, flags);
+        memoryObjects.add(buffer);
+        return buffer;
+    }
+    
+    //3d Textures
+    public final CLGLTexture3d<?> createFromGLTexture3d(int target, int texture, int mipmap, Mem... flags) {
+        return createFromGLTexture3d(null, target, texture, mipmap, Mem.flagsToInt(flags));
+    }
+
+    public final CLGLTexture3d<?> createFromGLTexture3d(int target, int texture, int mipmap, int flags) {
+        return createFromGLTexture3d(null, target, texture, mipmap, flags);
+    }
+
+    public final <B extends Buffer> CLGLTexture3d<B> createFromGLTexture3d(B directBuffer, int target, int texture, int mipmap, Mem... flags) {
+        return createFromGLTexture3d(directBuffer, target, texture, mipmap, Mem.flagsToInt(flags));
+    }
+
+    public final <B extends Buffer> CLGLTexture3d<B> createFromGLTexture3d(B directBuffer, int target, int texture, int mipmap, int flags) {
+        CLGLTexture3d<B> buffer = CLGLTexture3d.createFromGLTexture3d(this, directBuffer, target, texture, mipmap, flags);
+        memoryObjects.add(buffer);
+        return buffer;
+    }
+
+    /**
+     * Return the low level OpenCL interface with OpenGL interoperability.
+     */
+    @Override
+    public CLGLI getCL() {
+        return (CLGLI)super.getCL();
+    }
+
+    /**
+     * Returns the OpenGL context this context was shared with.
+     */
+    public GLContext getGLContext() {
+        return glContext;
+    }
+
+    @Override
+    public CLGLContext getContext() {
+        return this;
+    }
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLImage2d.java b/src/com/jogamp/opencl/gl/CLGLImage2d.java
new file mode 100644
index 00000000..82021816
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLImage2d.java
@@ -0,0 +1,73 @@
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CL;
+import com.jogamp.opencl.CLContext;
+import com.jogamp.opencl.CLImage2d;
+import com.jogamp.opencl.CLImageFormat;
+import com.jogamp.opencl.impl.CLImageFormatImpl;
+import java.nio.Buffer;
+import javax.media.opengl.GLContext;
+
+import static com.jogamp.opencl.CL.*;
+
+/**
+ * 2D OpenCL image representing an OpenGL renderbuffer.
+ * @author Michael Bien
+ */
+public class CLGLImage2d<B extends Buffer> extends CLImage2d<B> implements CLGLObject {
+
+    /**
+     * The OpenGL object handle.
+     */
+    public final int GLID;
+
+    protected CLGLImage2d(CLContext context, B directBuffer, CLImageFormat format, CLImageInfoAccessor accessor, int width, int height, long id, int glid, int flags) {
+        super(context, directBuffer, format, accessor, width, height, id, flags);
+        this.GLID = glid;
+    }
+
+    static <B extends Buffer> CLGLImage2d<B> createFromGLRenderbuffer(CLContext context, B directBuffer, int flags, int glObject) {
+
+        CLGLBuffer.checkBuffer(directBuffer, flags);
+
+        CL cl = getCL(context);
+        int[] result = new int[1];
+        CLGLI clgli = (CLGLI)cl;
+
+        long id = clgli.clCreateFromGLRenderbuffer(context.ID, flags, glObject, result, 0);
+
+        return createImage(context, id, directBuffer, glObject, flags);
+    }
+
+    static <B extends Buffer> CLGLImage2d<B> createImage(CLContext context, long id, B directBuffer, int glObject, int flags) {
+        CLImageInfoAccessor accessor = new CLImageInfoAccessor(getCL(context), id);
+
+        CLImageFormat format = createUninitializedImageFormat();
+        accessor.getInfo(CL_IMAGE_FORMAT, CLImageFormatImpl.size(), format.getFormatImpl().getBuffer(), null);
+
+        int width = (int)accessor.getLong(CL_IMAGE_WIDTH);
+        int height = (int)accessor.getLong(CL_IMAGE_HEIGHT);
+
+        return new CLGLImage2d<B>(context, directBuffer, format, accessor, width, height, id, glObject, flags);
+    }
+
+    @Override
+    public GLObjectType getGLObjectType() {
+        return GLObjectType.GL_OBJECT_RENDERBUFFER;
+    }
+
+    @Override
+    public int getGLObjectID() {
+        return GLID;
+    }
+
+    @Override
+    public CLGLContext getContext() {
+        return (CLGLContext) super.getContext();
+    }
+
+    public GLContext getGLContext() {
+        return getContext().getGLContext();
+    }
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLObject.java b/src/com/jogamp/opencl/gl/CLGLObject.java
new file mode 100644
index 00000000..6e2aa9d2
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLObject.java
@@ -0,0 +1,35 @@
+/*
+ * Created on Friday, February 26 2010
+ */
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CLMemory.GLObjectType;
+import javax.media.opengl.GLContext;
+
+/**
+ *
+ * @author Michael Bien
+ */
+interface CLGLObject {
+
+    /**
+     * Returns the OpenGL object id of this shared object.
+     */
+    public int getGLObjectID();
+
+    /**
+     * Returns the OpenGL buffer type of this shared object.
+     */
+    public GLObjectType getGLObjectType();
+    
+    /**
+     * Returns the OpenCL context of this shared object.
+     */
+    public CLGLContext getContext();
+
+    /**
+     * Returns the OpenGL context of this shared object.
+     */
+    public GLContext getGLContext();
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLTexture.java b/src/com/jogamp/opencl/gl/CLGLTexture.java
new file mode 100644
index 00000000..312df80b
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLTexture.java
@@ -0,0 +1,23 @@
+/*
+ * Created on Friday, February 26 2010
+ */
+
+package com.jogamp.opencl.gl;
+
+/**
+ *
+ * @author Michael Bien
+ */
+interface CLGLTexture extends CLGLObject {
+
+    /**
+     * Returns the OpenGL texture target of this texture.
+     */
+    public int getTextureTarget();
+
+    /**
+     * Returns the OpenGL mipmap level of this texture.
+     */
+    public int getMipMapLevel();
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLTexture2d.java b/src/com/jogamp/opencl/gl/CLGLTexture2d.java
new file mode 100644
index 00000000..88b32286
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLTexture2d.java
@@ -0,0 +1,63 @@
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CL;
+import com.jogamp.opencl.CLContext;
+import com.jogamp.opencl.CLImageFormat;
+import com.jogamp.opencl.impl.CLImageFormatImpl;
+import java.nio.Buffer;
+
+import static com.jogamp.opencl.CL.*;
+
+/**
+ * 2D OpenCL image representing an 2D OpenGL texture.
+ * @author Michael Bien
+ */
+public class CLGLTexture2d<B extends Buffer> extends CLGLImage2d<B> implements CLGLTexture {
+
+    public final int target;
+    
+    public final int mipMapLevel;
+
+    public CLGLTexture2d(CLContext context, B directBuffer, CLImageFormat format, CLImageInfoAccessor accessor, int target, int mipLevel, int width, int height, long id, int glid, int flags) {
+        super(context, directBuffer, format, accessor, width, height, id, glid, flags);
+        this.target = target;
+        this.mipMapLevel = mipLevel;
+    }
+
+    static <B extends Buffer> CLGLTexture2d<B> createFromGLTexture2d(CLContext context, B directBuffer, int target, int texture, int mipLevel, int flags) {
+
+        CLGLBuffer.checkBuffer(directBuffer, flags);
+
+        CL cl = getCL(context);
+        int[] result = new int[1];
+        CLGLI clgli = (CLGLI)cl;
+
+        long id = clgli.clCreateFromGLTexture2D(context.ID, flags, target, mipLevel, texture, result, 0);
+
+        CLImageInfoAccessor accessor = new CLImageInfoAccessor(cl, id);
+
+        CLImageFormat format = createUninitializedImageFormat();
+        accessor.getInfo(CL_IMAGE_FORMAT, CLImageFormatImpl.size(), format.getFormatImpl().getBuffer(), null);
+
+        int width = (int)accessor.getLong(CL_IMAGE_WIDTH);
+        int height = (int)accessor.getLong(CL_IMAGE_HEIGHT);
+
+        return new CLGLTexture2d<B>(context, directBuffer, format, accessor, target, mipLevel, width, height, id, width, flags);
+
+    }
+
+    public int getTextureTarget() {
+        return target;
+    }
+
+    public int getMipMapLevel() {
+        return mipMapLevel;
+    }
+
+    @Override
+    public GLObjectType getGLObjectType() {
+        return GLObjectType.GL_OBJECT_TEXTURE2D;
+    }
+
+
+}
diff --git a/src/com/jogamp/opencl/gl/CLGLTexture3d.java b/src/com/jogamp/opencl/gl/CLGLTexture3d.java
new file mode 100644
index 00000000..8731b5e7
--- /dev/null
+++ b/src/com/jogamp/opencl/gl/CLGLTexture3d.java
@@ -0,0 +1,86 @@
+package com.jogamp.opencl.gl;
+
+import com.jogamp.opencl.CL;
+import com.jogamp.opencl.CLContext;
+import com.jogamp.opencl.CLImage3d;
+import com.jogamp.opencl.CLImageFormat;
+import com.jogamp.opencl.impl.CLImageFormatImpl;
+import java.nio.Buffer;
+import javax.media.opengl.GLContext;
+
+import static com.jogamp.opencl.CL.*;
+
+/**
+ * 3D OpenCL image representing an 3D OpenGL texture.
+ * @author Michael Bien
+ */
+public class CLGLTexture3d<B extends Buffer> extends CLImage3d<B> implements CLGLObject, CLGLTexture {
+
+    /**
+     * The OpenGL object handle.
+     */
+    public final int GLID;
+
+    public final int target;
+    
+    public final int mipMapLevel;
+
+    private CLGLTexture3d(CLContext context, B directBuffer, CLImageFormat format, CLImageInfoAccessor accessor, int target, int mipLevel, int width, int height, int depth, long id, int glid, int flags) {
+        super(context, directBuffer, format, accessor, width, height, depth, id, flags);
+        this.GLID = glid;
+        this.target = target;
+        this.mipMapLevel = mipLevel;
+    }
+
+    static <B extends Buffer> CLGLTexture3d<B> createFromGLTexture3d(CLContext context, B directBuffer, int flags, int target, int mipLevel, int texture) {
+
+        CLGLBuffer.checkBuffer(directBuffer, flags);
+
+        CL cl = getCL(context);
+        int[] result = new int[1];
+        CLGLI clgli = (CLGLI)cl;
+
+        long id = clgli.clCreateFromGLTexture3D(context.ID, flags, target, mipLevel, texture, result, 0);
+
+        CLImageInfoAccessor accessor = new CLImageInfoAccessor(cl, id);
+
+        CLImageFormat format = createUninitializedImageFormat();
+        accessor.getInfo(CL_IMAGE_FORMAT, CLImageFormatImpl.size(), format.getFormatImpl().getBuffer(), null);
+
+        int width = (int)accessor.getLong(CL_IMAGE_WIDTH);
+        int height = (int)accessor.getLong(CL_IMAGE_HEIGHT);
+        int depth = (int)accessor.getLong(CL_IMAGE_DEPTH);
+
+        return new CLGLTexture3d<B>(context, directBuffer, format, accessor, target, mipLevel, width, height, depth, id, texture, flags);
+    }
+
+    public int getGLObjectID() {
+        return GLID;
+    }
+
+    public int getTextureTarget() {
+        return target;
+    }
+
+    public int getMipMapLevel() {
+        return mipMapLevel;
+    }
+
+    public GLObjectType getGLObjectType() {
+        return GLObjectType.GL_OBJECT_TEXTURE3D;
+    }
+
+    /**
+     * Returns the shared CLGLContext.
+     */
+    @Override
+    public CLGLContext getContext() {
+        return (CLGLContext) super.getContext();
+    }
+
+    @Override
+    public GLContext getGLContext() {
+        return getContext().getGLContext();
+    }
+
+}