[All] Add bicubic lightmap sampling support to VertexLitGeneric
Description
This PR adds support for bicubic lightmap sampling to VertexLitGeneric's lightmapped (non-bump/non-Phong) path.
Below are some demonstration screenshots taken on the TF2 map rd_asteroid.
Admittedly this is the only official map I could find with substantial usage of lightmapped props -- fitting given that the feature was developed specifically for this map.
| Disabled | Enabled |
|---|---|
Lets hope people actually have margins on their props.. Or they get the same issue we had before the SDK Update, where they hacked in a 1 pixel outline for Brush Lightmaps..
Lets hope people actually have margins on their props.. Or they get the same issue we had before the SDK Update, where they hacked in a 1 pixel outline for Brush Lightmaps..
Wonder if it would make sense to have bicubic prop lightmaps use a separate cvar from bicubic brush lightmaps, in that case. Honestly, I wish it was a VMT boolean.