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package com.mbien.opencl.gl;
import com.mbien.opencl.CL;
import com.mbien.opencl.CLBuffer;
import com.mbien.opencl.CLContext;
import com.mbien.opencl.CLMemory.GLObjectType;
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+"]";
}
}
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