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package com.mbien.opencl;
import java.nio.Buffer;
import static com.mbien.opencl.CLException.*;
/**
*
* @author Michael Bien
*/
public final class CLBuffer<B extends Buffer> extends CLMemory<B> {
private CLBuffer(CLContext context, B directBuffer, long id) {
super(context, directBuffer, id);
}
static <B extends Buffer> CLBuffer<B> create(CLContext context, B directBuffer, int flags) {
return create(context, directBuffer, flags, 0);
}
static <B extends Buffer> CLBuffer<B> create(CLContext context, B directBuffer, int flags, int glBuffer) {
if(directBuffer != null && !directBuffer.isDirect())
throw new IllegalArgumentException("buffer is not a direct buffer");
CL cl = context.cl;
long id;
int[] result = new int[1];
if(glBuffer == 0) {
B host_ptr = null;
if(isHostPointerFlag(flags)) {
host_ptr = directBuffer;
}
id = cl.clCreateBuffer(context.ID, flags, sizeOfBufferElem(directBuffer)*directBuffer.capacity(), host_ptr, result, 0);
}else{
if(isHostPointerFlag(flags)) {
throw new IllegalArgumentException(
"CL_MEM_COPY_HOST_PTR or CL_MEM_USE_HOST_PTR can not be used with OpenGL Buffers.");
}
CLGLI clgli = (CLGLI)cl;
id = clgli.clCreateFromGLBuffer(context.ID, flags, glBuffer, result, 0);
}
checkForError(result[0], "can not create cl buffer");
return new CLBuffer<B>(context, directBuffer, id);
}
@Override
public <T extends Buffer> CLBuffer<T> cloneWith(T directBuffer) {
return new CLBuffer<T>(context, directBuffer, ID);
}
}
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