Cubemapped entities in 16bit mode (?)

Blitz3D Forums/Blitz3D Programming/Cubemapped entities in 16bit mode (?)

Paolo

(Posted 2006) [#1]

Any clue about why cubemapped ents get drawn behind
everything else in 16bit mode? how to fix this?

Thanks!
Paolo.

Robert Cummings

(Posted 2006) [#2]

Cubemapping does not work correctly under 16 bit.

Damien Sturdy

(Posted 2006) [#3]

I think he guessed this.

In response to that though, it works fine for me, so no idea :(

Robert Cummings

(Posted 2006) [#4]

Back when I used to test Blitz3D, we ran into problems with cube mapping and 16 bit. I spoke to nVidia about it and they wanted mark to get back in touch - it was broken on Geforce 2's...

Ross C

(Posted 2006) [#5]

Is it not slightly emulated? I heard from a thread on here, cubemapping, normal mapping were slightly software based and therefore not as fast. Any truth to that?

Paolo

(Posted 2006) [#6]

thanks!
I'm with with a GF2 actually, if it is only a gforce problem
then I can live with that, I will test with the on-board card
in my PC to see if the problem is still there ...

Cygnus,
What card do you have?

Paolo.

Damien Sturdy

(Posted 2006) [#7]

I've had a GF4 ti4200, and a GF 6800. I couldn't get cubemapping working at all pre GeForce-4.

Matty

(Posted 2006) [#8]

Cubemapping works on my Geforce 2 MX. Well at least the old 'water' demo that was put together a long time ago works, as do the samples that come with blitz3d.

Paolo

(Posted 2006) [#9]

It also works in my GF2 in 32bit mode,
but I meant it doesn't in 16bit :)

Paolo

Damien Sturdy

(Posted 2006) [#10]

hmm, I tend to make alot of my low-spec games run in 16-bit. perhaps my habit of running 16-bit is the reason I couldn't get CubeMapping working Pre GF4?

Yan	(Posted 2006) [#11]

WBuffer False

Paolo

(Posted 2006) [#12]

Thanks Kevin !!!
It works perfect with WBuffer disabled, how is it that I didn't try that? :)

Now, another question,
What problems may I have if I disable WBuffer?
I mean, I'm now having more than 100 thousands lines of
"oddly" code, I'm not sure if I should change a GLOBAL setting like that ...

Paolo.

Ross C

(Posted 2006) [#13]

Maybe cubemaps need to use the z-buffer? The w buffer, as i remember, is a more linear way of the depth buffer, where as Z buffer is expontential. The probably you might suffer, could be overlapping of meshes/surfaces near each other. Such as decals and that.