Jelle Raaijmakers 8c094699db LibGL: Implement glLightModel integer normalization ...

For the ambient light model, integers need to be remapped to a range of
`-1.` through `1.`. Add the `+` and `-` operators to `VectorN` to make
it a bit easier to normalize 4 values at once.

2022-12-20 10:42:31 +01:00

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