Optimize dovi buffer access, mainly on Intel #198
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Intel prefers clEnqueueMapBuffer + clEnqueueUnmapMemObject, instead of clEnqueueWriteBuffer. Also unify the dovi buffer to lower the function call overhead. https://www.intel.com/content/www/us/en/developer/articles/training/getting-the-most-from-opencl-12-how-to-increase-performance-by-minimizing-buffer-copies-on-intel-processor-graphics.html Signed-off-by: nyanmisaka <nst799610810@gmail.com>
Shadowghost
approved these changes
Oct 30, 2022
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Changes
Intel prefers clEnqueueMapBuffer + clEnqueueUnmapMemObject, instead of clEnqueueWriteBuffer.
Also unify the dovi buffer to lower the function call overhead.
It seems that Intel has not yet enabled zero-copy buffer in OpenCL for DG2, so this optimization works well.
160fps -> 200fps @ 3840x1608
250fps -> 340fps @ 1920x1080