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DAV1D Experimenting With Vulkan & OpenGL ES GPU Offloading
Because they're using compute shaders, rather than fragment shader hacks. Of course, that rules out Raspberry Pi 4 support, for the time being.
The initial patch just accelerates a few simple neighborhood filters. It's not obvious how much benefit it'll provide, but I guess it's a starting point.
Another supposedly GPU offloadable AV1 feature is film grain, though I haven't seen that in use yet.
That is because not only it saves CPU not to add "film grain", it also improves the picture :-)
There are crazy people out there who even add "film grain" to computer generated game graphics, as if an analog camera flaw was something great. And then, only after players complain, make it optional, as just recently happened to "Control" - https://controlgame.com/control-comm...pdate-30-8-19/
Another supposedly GPU offloadable AV1 feature is film grain, though I haven't seen that in use yet.
CDEF offlading would be great, as cdef_filter_block_c was no stranger in the performance reports (if you didn't have AVX2 or SSSE, I suppose, which I could also reproduce).
Last edited by andreano; 03 September 2019, 01:42 AM.
DAV1D Experimenting With Vulkan & OpenGL ES GPU Offloading
Phoronix: DAV1D Experimenting With Vulkan & OpenGL ES GPU Offloading
There isn't any AV1 video decode/encode built into the video engines of today's GPUs, but the DAV1D project CPU-based AV1 decoder is experimenting with offloading some aspects of the process to current generation hardware with OpenGL ES and Vulkan...
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