- Removed empty parantheses on GroupMemoryBarrier macro, which confuse the 2020.1 shader compiler
- Added padding field to cbFSR2 to make it exactly 128 bytes in size, which gives correct buffer alignment on iOS Metal
- Changed auto-exposure reset threshold value to 1e4f, as part of a fix for black screen flashes in OpenGL Core on Nvidia GPUs
- Clamp luma to >= 0 in auto-exposure to fix artifacting in OpenGL Core on Nvidia GPUs
- Removed #extension directives meant for GLSL, which cause shader compiler warnings in Unity
