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package com.mbien.opencl;
import java.nio.Buffer;
import static com.mbien.opencl.CLException.*;
/**
*
* @author Michael Bien
*/
public class CLBuffer<B extends Buffer> extends CLMemory<B> {
protected CLBuffer(CLContext context, long id, int flags) {
super(context, id, flags);
}
protected CLBuffer(CLContext context, B directBuffer, long id, int flags) {
super(context, directBuffer, id, flags);
}
@SuppressWarnings("unchecked")
static CLBuffer<?> create(CLContext context, int size, int flags) {
CL cl = context.cl;
int[] result = new int[1];
if(isHostPointerFlag(flags)) {
throw new IllegalArgumentException("no host pointer defined");
}
long id = cl.clCreateBuffer(context.ID, flags, size, null, result, 0);
checkForError(result[0], "can not create cl buffer");
return new CLBuffer(context, id, flags);
}
static <B extends Buffer> CLBuffer<B> create(CLContext context, B directBuffer, int flags) {
if(!directBuffer.isDirect())
throw new IllegalArgumentException("buffer is not direct");
B host_ptr = null;
CL cl = context.cl;
int[] result = new int[1];
if(isHostPointerFlag(flags)) {
host_ptr = directBuffer;
}
long id = cl.clCreateBuffer(context.ID, flags, sizeOfBufferElem(directBuffer)*directBuffer.capacity(), host_ptr, result, 0);
checkForError(result[0], "can not create cl buffer");
return new CLBuffer<B>(context, directBuffer, id, flags);
}
@Override
public <T extends Buffer> CLBuffer<T> cloneWith(T directBuffer) {
return new CLBuffer<T>(context, directBuffer, ID, FLAGS);
}
}
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