SWAT 4: Graphical Enrichment Mod (aka SWAT 4: GEM) is changing nearly all game textures, partly with enhanced originals, partly with hi-res variants.
This is a screenshot from the SWAT 4 Editor that I captured back in the days of alpha testing. Please note, that these exact movie posters will not appear in the final version of the mod, because I obviously don’t want to interfere with any copyrights. This screenshot is showing you a situation of looking at the same posters from more usual distance. As you can see, the differences are already marginal and the regular size textures (paradoxically) look even slightly better than the hi-res ones because it’s a bit sharper from such normal viewing distances.