3 Replies Latest reply on Dec 10, 2012 2:31 AM by bmerry

    clEnqueueCopyImage returning CL_MEM_COPY_OVERLAP

    bmerry

      Hi

       

      I'm trying to use clEnqueueCopyImage to copy from one region of an image to another part of the same image. The specification says the error CL_MEM_COPY_OVERLAP is returned if "src_image and dst_image are the same image object and the source and destination regions overlap." I'm getting this error even though I'm using non-overlapping regions. There is a test case in the attachment, which fails on the 64-bit Linux build of APP SDK 2.8.

       

      Does anyone have recommendations for a workaround? I'm considering writing a kernel that does the copy, but I'm not sure if it's well-defined to read and write from a single image within a single kernel. Otherwise I could copy via a temporary buffer, but that seems pretty wasteful.