Feature: add VMT parameter for non-AO baked base textures on models when SSAO is enabled.

[Trico-Everfire]

Which component should be improved?

Rendering

Describe your feature suggestion in more detail

I was thinking about SSAO and how most props in Valve games have baked in AO. Given SSAO is optional. Would it be possible to have a VMT parameter for non-ao baked albedo/basetextures?

What this would do is that if SSAO is enabled, it'll choose this non-AO baked texture instead. Allowing SSAO to shine without overdarkening areas on a prop. Whilst if SSAO is disabled (let's say the user disables it for performance reasons) it'll switch back to the pre-baked AO textures Source games have.

If no such parameter is specified, it'll default to the base texture instead.

[TeamSpen210]

Isn't this just the MRAO texture for PBR materials? AO shouldn't need a full colour mask.

[Trico-Everfire]

Does the AO on MRAO get disabled if SSAO is enabled? I don't know enough about SSAO/PBR to really tell what's going on.

[JJL772]

currently AO maps do not get disabled with SSAO. I'm not sure we would want to do that though, because (as far as I know) AO maps are generally for fine details on the model that SSAO probably won't cover too well (or at all).