For using textures in WADs I know that the best plan is to use levels of two, i.e. 256x256, 512x512, etc. Some say that you can't mix and match: i.e., 64X256, but I have had no problems with textures of this kind.

But what about "almost" power of two textures. This would be a texture sized 512X384. This does not look like a power of two, but 384 is 256 + 128, or "almost" a power of two. Has anyone experimented with texture sizes like this? Is is a recommended practice?
Thanks for your advice.

"Almoust" right textures work same like all others, but using them can cause folliwing results:
1. Game will load longer, because engine needs to resize this textures.
2. It will use more ram because converted textures aren't optimized.
3. Such textures can have a blurry look, or even something worse, like wrong placement over blocks (wrong tiling)

Thanks Vadim647,
I was afraid of that, but have not actually noticed a big hit.
Sounds like a practice to avoid, though.
It will be more work, but I will resize textures to avoid the issue.
Thanks,
Jim

most important: even though the texture is 512/384 it will consume as much memory as a 512/512 texture.

cheers and have a nice one

Hi Blattsalat,
I agree with you that the memory hit is VERY important.
But that is not true with a 512X256 texture is it?

Also are the rules the same with sprites or model textures as with level geometry textures?

I realize these are noobie questions, and I am a bit embarrased that I don't know this stuff, but I guess I never really got it through my head.
Thanks,

Hi,

a 512/256 will of course stay the same size. but if you use a 512/257 texture it will use as much memory as a 512/512 will. just make sure to stay in power of 2 at any time. you can also use 64/1024 if needed, as long as the single sides are a power of two you are fine.

btw, its better to ask then to create something wrong
this forum is a goldmine for knowledge and tricks!

cheers and have a nice one

Can you put more than one texture into a single texture and use offset to put them in place on geometry? I mean have a texture of 512x512 with two textures of different size inside which aren't power of two, or is this only possible with real models?

From memory yes its possible.
Some one even came up with the code for it but I have since lost the thread.