[FFmpeg-devel] [PATCH 3/3][RFC] avfilter/vf_chromakey: Add OpenCL acceleration

Timo Rothenpieler timo at rothenpieler.org
Tue Oct 13 12:27:46 CEST 2015

> Hi
> I use your filter, but the kernel can't pass the compile, you should consider the "double" type in the kernel, some GPU card does not support double type
> I add "#pragma OPENCL_EXTENSION cl_khr_fp64: enable " to the kernel, but it does not works
> I will check the error tomorrow

I tested this filter on Nvidia on Linux, using driver 355 and on the 
Intel CPU-based OpenCL SDK so far.
Using floats potentially has an impact on the keying quality.

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