How is the video decoder being invoked? Hardware acceleration?

[Originalimoc]

Eg:
On Linux, is it using VAAPI Or? If want to port it to Raspberry Pi 4 which support HEVC up to 4K60, but I guess xCloud and xHome only using AVC?

How about on Windows then, DirectX VA?

So on..

[Originalimoc]

Later I'll write a guide how to enable VAAPI on Intel and AMD(Steam Deck). Windows build is already use D3D11VA automatically.

[Originalimoc]

For Intel, just run with these flags:
--enable-features=CanvasOopRasterization,VaapiVideoDecoder,VaapiVideoDecodeLinuxGL,VaapiIgnoreDriverChecks,PlatformHEVCDecoderSupport --use-cmd-decoder=passthrough --ignore-gpu-blocklist --enable-zero-copy --enable-gpu-rasterization --enable-native-gpu-memory-buffers --enable-gpu-memory-buffer-video-frames --disable-features=UseChromeOSDirectVideoDecoder --no-sandbox --use-vulkan --ozone-platform-hint=x11
Where
--enable-features=VaapiVideoDecoder,VaapiVideoDecodeLinuxGL,CanvasOopRasterization,VaapiIgnoreDriverChecks --ozone-platform-hint=x11
is essential, but rest might be good for performance.
Given you're not using flatpak and vainfo returned working result.
For flatpak, use flatpak of next method with AMD then run with above flags(flatpak run ..id.. ..flags..)

[Originalimoc]

On a latest Arch machine, run this to build the patched flatpak:

git clone https://github.com/unknownskl/greenlight
cd greenlight/
git submodule update --init --recursive
cd flatpak/
chmod +x build_bundle_manually.sh
./build_bundle_manually.sh

After install then run this script to launch it:

#!/bin/bash
cd /usr/bin
#gamescope -w 1920 -h 1080 -F fsr -b --
/usr/bin/flatpak run dev.unknownskl.greenlight --use-vulkan --use-angle=vulkan --enable-features=Vulkan,VulkanFromANGLE,DefaultANGLEVulkan,VaapiIgnoreDriverChecks,VaapiVideoDecoder,PlatformHEVCDecoderSupport,CanvasOopRasterization --enable-oop-rasterization --disable-features=UseChromeOSDirectVideoDecoder --enable-accelerated-video-decode --ozone-platform-hint=x11 --gtk-version=4 --no-sandbox

In Steam Deck game mode set resolution to 1920x1080 then map one of button to F11 to "fullscreen" it to avoid nearest neighbor scaling. As of 20231130 this is fully working at stable 60FPS on 3W TDP, 600Mhz GPU. On an OLED model you can get ~7-8 hours of playtime, LCD ~5 hours