From: | Thomas Frieden |
Date: | 16 Sep 2001 at 13:55:03 |
Subject: | Re: [3DWorld] Textures. |
Hi,
Sorry, I'm just now catching up with the postings here. I couldn't post
because I was still subscribed with my old address...
Michal Wozniak wrote:
> Some question about textures. I have noticed that they
> eat some memory when they are first used. Why?
> I thought it's about conversion and stuff, but
> I checked and R5G5B5 textures are directly supported
> by hardware.
>
The first time a texture is used, memory of it is allocated *on the
graphics board*. Graphcs board memory is normally allocated as bitmaps
through the underlying graphics board software, so the first time a
texture is used, there might be a bitmap allocated, which accounts for
the additional memory. Additional textures should not allocated
additional bitmaps as long as they still fit into the bitmap that's
already been allocated.
Regards,