"crt-royale" Blown-out banding bloom on high resolution

[trzyglow]

The port of the "crt-royale" shader has a very blown-out bloom effect that has some banding, when used on high resolution.

This can be mitigated by removing the hardcoded resolution for the bloom and setting the "scale_type2" to "viewport".

I'll add a before/after image (before - left ; after - right) and a patched glslp file.

(This might be the intended way to render the shader, but I'm creating this ticket just in case it isn't.)

[trzyglow]

diff of the original and modified files