I have a little question regarding a technical aspect of blender:
What is better, having bigger maps or several UV Layouts?
I ask this question because I saw a lot of my friends using huge maps for a wall (like 2048 or even 4096) but the whole wall is actually just a tiling texture with one little detail at the bottom.
Now I thought: wouldn’t it be better to use a 512 tiling texture to fill the wall and add the little detail with another UV layout and another 256-512 map?
But then I thought: Wouldn’t it be always better to use tiling textures for the basic pattern and add the details with another map? If we look at the mapsizes it’s obviously better, but how much resources does it cost the blender game engine to mix different UV Layouts with textures?
I see a lot of big maps with lots of unused space. Sometimes its necessary because you have so many details, a tiling texture wouldn’t be good, but what about architecture and environements? (or even simple objects without lots of details)
Well I work somehow different than my friends and they dont understand why I’m doing this:
One map per object-group for large tiling base texture, one map that adds details here and there and a final lightmap with AO, shadows, etc. (The lightmap is generated for more objects at once because I found out that its okay if lightmaps are slightly distorted or not that detailed)
So I have 3 UV layouts for my objects. But … is this good or bad for the game engine?
My mapsizes are much better because I can use very small maps and still have awesome crisp detail, instead of baking everything into 2048 maps for just one single object.
So again: Is it better to bake big maps for my objects (like 2048 maps for every object to have enough detail) or make 3 UV Layouts (with 512, 512 and 256 and better details than baking) ?
Basically: How much does an additional UV Layout cost in the game engine?
I started blender some weeks ago, so I didn’t have the time make a big scene and test it out myself.
Sorry if this is a bit confusing, I can add some screenshots later to explain if its too abstract.
Thanks for your time!