Blender Git Loki

Fix T81751: Use GLSL for better anim player performance

Originally colorspace of float images was converted using CPU.
GLSL will render images much faster.

Originally image was converted to `global_role_default_byte` space,
disregarding view transform and also display device, which now is
possible to specify. These parameters could be set via commandline to
settings used in Blender, however if they are to be set by users, these
needs to be sanitized.
Right now defaults are assumed for device given for
`COLOR_ROLE_DEFAULT_BYTE`. This should produce same behavior as
implemented before.

Together with D11167 animation player performance should be much better.

This code was mostly copy-pasted from sequencer.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D11178