Erratic colours on 5700G + Big Sur

[rtd1250]

Describe the bug
Colour is not correct on HDMI output with NootedRed enabled.

To Reproduce
Steps to reproduce the behavior:

1. Enable NootedRed
2. Reboot
3. Be greeted with LSD desktop

Expected behavior
Colours should be displayed correctly, as in black should be black instead of green.

Screenshots

System Information:

• macOS Version: macOS 11.7.10
• CPU: AMD Ryzen 7 5700G
• Motherboard: MSI X570
• SMBIOS: iMacPro1,1

Additional context
Changing resolutions and colour depth doesn't really seem to do anything. This only happens on HDMI output, screenshots look fine (the screenshot above was taken with an HDMI grabber). The acceleration itself does work and in the About window it reports as "AMD Radeon Graphics 1 GB".

[VisualEhrmanntraut]

Duplicate of #65