When using xf86-video-amdgpu + amdgpu.dc=1 at the same time, enabling RedShift
makes the mouse cursor appear too orange/dark. It looks like if the gamma
adjustment is applied twice instead of once.

When using xf86-video-amdgpu + amdgpu.dc=0, the cursor looks correct (as orange
as the rest of the screen).

When using amdgpu.dc=1 with modesetting DDX instead of xf86-video-amdgpu, the
cursor looks correct as well.

(And for the sake of completeness: amdgpu.dc=0 without xf86-video-amdgpu leaves
the mouse cursor completely untouched by RedShift.)

Best set your mouse cursor skin to something white, e.g. "DMZ White".

drm-next-4.18-wip (latest commit: 404af8e5236fe7eb64d91bf708bd7aa81815d14e)
with Xorg 1.20 and xf86-video-amdgpu 18.0.1.