1 files changed, 68 insertions, 0 deletions
diff --git a/src/com/mbien/opencl/gl/CLGLBuffer.java b/src/com/mbien/opencl/gl/CLGLBuffer.java
new file mode 100644
index 00000000..54e849ff
--- /dev/null
+++ b/src/com/mbien/opencl/gl/CLGLBuffer.java
@@ -0,0 +1,68 @@
+package com.mbien.opencl.gl;
+
+import com.mbien.opencl.CL;
+import com.mbien.opencl.CLBuffer;
+import com.mbien.opencl.CLContext;
+import com.mbien.opencl.CLGLI;
+import com.mbien.opencl.CLMemory.GLObjectType;
+import java.nio.Buffer;
+
+
+/**
+ * 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) {
+        super(context, directBuffer, id);
+        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);
+    }
+
+    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 <T extends Buffer> CLGLBuffer<T> cloneWith(T directBuffer) {
+        return new CLGLBuffer<T>(context, directBuffer, ID, GLID);
+    }
+
+    @Override
+    public String toString() {
+        return "CLGLBuffer [id: " + ID+" glID: "+GLID+"]";
+    }
+
+}