The following error occurs in my game:
It looks like small splashes of alpha, since I can see through them.
Maybe some default state not being set? Anyway. Any help would be much appreciated 
Now. It’s definately some kind of alpha offset problem or something, but it works on all other cards I tested on. Even on OS X with ATI Rage 8500!!!
Please tell me it’s a lie that the GeForce FX5200 only draws completely square textures correcly. Non-square such as 320x240 and 640x480 exhibits the mentioned alpha error.
Sounds like a driver bug to me.
If you want to use a non-power-of-two texture (not being square has nothing to do with it), you need to use one of the texture_rectangle extensions (ARB and NV are supported with the latest Forceware). Then, make sure you’re using the right texture coordinates, with rectangle textures they go [0…w][0…h] instead of [0…1][0…1].
But it works fine on other geforce cards + ATI?
It’s this specific card that won’t work.
If I make my texture square it works. Otherwise I get holes in my image due to some screwup in the alpha channel ???
Hi,
With a FX5200 and a wrong texture size (non power of two) i experienced strange behaviours…
But i agree with Spasi, you should definitively use the extension for non power of 2 textures…
[quote]But it works fine on other geforce cards + ATI?
It’s this specific card that won’t work.
[/quote]
Sounds really weird. Could you please post a part of your texture loading code?
[quote]If I make my texture square it works. Otherwise I get holes in my image due to some screwup in the alpha channel ???
[/quote]
Making it square (e.g. 320x320) doesn’t change anything. What matters is whether it’s power-of-two or not (e.g. make a 512x256 texture and use a 320x240 part of it, with the right texcoords).
I see that exact same pattern when I play DVD’s and movie files (which are probably using a non-pot surface) on my Fx 5200. I’d never seen them before when I was running the same system but with a GeForce 4 Ti. Methinks its a driver bug.
I agree. It’s 2005 and new cards should just use nonpow textures without ANY problems >:(
[quote]It’s 2005 and new cards should just use nonpow textures without ANY problems >:(
[/quote]
Well, you should buy a 2005 card then. Any 6X00 would run fine with NPOT textures (NV40 is the only chip with support for ARB_texture_non_power_of_two right now).