Make rendering "exposure" available without tone mapping?

[slipher]

The cvar r_toneMappingExposure multiplies pixels by a constant, before applying the tonemap curve. But I don't see why this shouldn't be available even without tonemapping off, as it's a cheap calculation. In ioq3 it's called r_intensity (not that this is a good name). Anything against renaming to r_exposure and making it always available?

[VReaperV]

It's still part of the tonemapping process, so perhaps the uniform and the multiplication with exposure should just be moved out of the #ifdef's?