float[] samples = new float[surface.getSamples().length];
            for (int j = 0; j < surface.getSamples().length; j++) {
                samples[j] = (float) surface.getSamples()[j];
            }
            CLBuffer<FloatBuffer> buffer = context
                    .createFloatBuffer(samples.length, Mem.READ_ONLY, Mem.ALLOCATE_BUFFER);
            buffer.getBuffer().put(samples);
            commandQueue.putWriteBuffer(buffer, true);