Hi Andrew,
Just to throw another requirement into the mix, I don't think we can use
vertex shaders, as we cannot guarantee what hardware the software will
be run on. Basically integrated graphics is the lowest possible
hardware, so what's that, DirectX 8? 9? Vertex shaders run on DX8 but
you won't get many instructions.
Well you're kind of juggling conflicting requirements. You want the app
to run on low-end graphics, but you want to reduce its CPU-side memory
usage to a minimum by not storing normals. Generally you have a
trade-off to make by using more memory and getting good performance, and
getting lower performance but using less memory. That's just the way it
goes, but you'll have to try to know for sure. No one has a situation
exactly like yours, we can only offer guidance.
We've given you a few different alternatives, now you have to weigh the
pros and cons yourselves. Perhaps try a few of the alternatives in a
little test program before making changes in your software itself, and
test the alternatives in realistic settings (with lots of objects for
example) looking at the stats each time.
If you really want to use normal indices, try it out, but as Robert said
(and I and others have said before in this thread) this will drop you
down to slow paths. If that's good enough for you, then fine, but you
won't know unless you try it.
Hope this helps,
J-S
--
______________________________________________________
Jean-Sebastien Guay jean-sebastien.g...@cm-labs.com
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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