(de)compress on the GPU

[totaam]

Especially for decompression: we could upload the RGB(A) lz4 compressed data to the GPU, use nvcomp to decompress it then pass the RGB data to the OpenGL renderer.

[Vssblt]

Hi, It is possible to use this in xpra-html5?
The current version html5 client using too much CPU to decoding the data.

[totaam]

Hi, It is possible to use this in xpra-html5?

@Vssblt definitely not.

The current version html5 client using too much CPU to decoding the data.

You can set a higher min-speed, but this will use more bandwidth.

[Vssblt]

Thank! it works.

[totaam]

From https://github.com/NVIDIA/nvcomp : "From version 2.3 onwards, the compression / decompression source code will not be released."
What are they hiding now?

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Anyway, the throughput isn't great for lz4:

compared to the CPU implementation.
Especially considering that they're testing with large buffers.