Reply – Converting queue.enqueueReadImage -> putMapImage?
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Converting queue.enqueueReadImage -> putMapImage?
— by nyholku nyholku
Hi,

I'm converting an OpenCL snippet from C++ to jocl, but I'm struggling with this one:

C++
        // Read top of histoPyramid an use this size to allocate VBO below
        int * sum = new int[8];
        if(writingTo3DTextures) {
            queue.enqueueReadImage(images[images.size()-1], CL_FALSE, origin, region, 0, 0, sum);
        } else {
            queue.enqueueReadBuffer(buffers[buffers.size()-1], CL_FALSE, 0, sizeof(int)*8, sum);
        }

My guess is that this should be something like:


                if (writingTo3DTextures) {
        queue.putMapImage(images[images.length - 1], Map.READ, origin[0], origin[1], origin[2], region[0], region[1], region[2], false);
                } else {
                        queue.putMapBuffer(buffers[buffers.length - 1], Map.READ, 0, SIZEOF_INT * 8, false);
                        }

but that must be wrong as the C++ snippet is supposed to read 8 values from the image/buffer ... and I can't figure out how that's going to happen. Not too sure about the other parameters either, especially  Map.READ.

Any help appreciated, pointers to reading welcome...

br Kusti