[Fry_Day]

TNT2 and voodoo 3 don't support texture compression. Every Savage card supports compression (They were the first cards with texture compression support), GeForces and Radeons all also support texture compression.

DXT 1, 3 and 5 are the useful formats. 2 and 4 are premultiplied alpha formats, which are rarely used. I suggest not supporting them, since using premultiplied alpha textures isn't worth breaking compatability with OpenGL.

[MadProf]

Be careful with DXT1 on GeForce cards up to 3, dont know about above still checking.

quote from http://udn.epicgames.com/pub/Content/TextureSpecifications/


 DXT1

DXT1 is a four-bit compressed color format that allows for opaque, and one-bit alpha textures; that is, textures with no transparency at all, and textures with a single transparent color. A hardware bug in all nVidia chipsets, including the NV20 (GeForce3), potentially makes DXT1 textures gross and ugly. Specifically, decompression is performed in 16-bit color mode internally, making the resulting texture potentially unacceptable for use, especially when combined with other operations. Test your DXT1 textures on nVidia hardware before committing to their use. All other DXTC formats on nVidia hardware are okay, as textures are decompressed in 32-bit color internally.

[RandomTiger]

I've just found a bug in D3D DXT code so best stay away from it till I've nailed it down.

Also thanks for the info guys.

[Kosh]

Everything supported. Mobility Radeon 7500.

[IceFire]

Radeon 9700Pro supports them all.  No issues.  Nice new launcher too!

[MLeoDaalder]

I don't know really, I have a Diamond Viper V770 Ultra. So that is TNT 2.

But I would suggest PNG format. Much easier and the best is, no data loss, not a single pixel!

[EDIT]Ok, I just found Launcher v3.3 and I tried it, sorry not a single DXT is supported .

I do hope to get a new card in Februari, heck a new computer as a matter of fact (another matter of fact is, I hope to be able to buy a new comp).

[/EDIT]

[Lightspeed]

PNG doesnt have any advantage over TGA though.

[ChronoReverse]

What about animated pngs?  Can TGA's be animated?

[Liberator]

GF4mx 420 64mb - all supported

[phreak]

i wonder how hard it would be to string together some DDS images to make an animation.

edit:  i don't know if this has been mentioned, but IIRC DDS textures must have power of 2 sizes

[Liberator]

There goes that then, the Orion as well as a lot of V ships have several non-standard maps.

[Bobboau]

they can be resampled, in game if need be (though that would be painfuly slow)

[Sesquipedalian]

No support here.  TNT2.

[MLeoDaalder]

Well there is an animation brother of PNG, it has a little brother called MNG Multi-image Network Graphics.

Here is the PNG site:
http://www.libpng.org/pub/png/

And here is the MNG site:
http://www.libpng.org/pub/mng/

Please don't forget it is open source (so you can add any wisttles you want). And it is free.
Here is MNG licence: http://www.libmng.com/license.html
It also supports Alpha and transparanty.

[phreak]

i thought PNGs were hella slow to decode

[MLeoDaalder]

I never noticed that.

I ounce wrote a PNG2BMP converter + catalogizer (so it also viewed tumbnails of the images), it converted 100MB of PNGs (thanks to my little brother for gathering) to about 300 MB of BMPs. That in just 1 minute . Then I got a blue screen (this was a couple of weeks later, and it had nothing to do with the PNG converter, just another program from Macrofracture (guess who I mean) in which I lost the program).

[phreak]

odd.  its pretty slow with browsers.  PNG may be worth a shot.

[MLeoDaalder]

Well maybe it is the plugin that is slow, or many people using the same piece of lib at the same time.
Or Microsoft hating open source things better than their own products (as if that is very hard).
Or a combination of the above named explanations.

[Flipside]

Well DDS support would only be needed for models that don't already have textures, and the edges on a DDS don't have to be equal powers of 2, so 1024 x 512 textures are fine, and since a large area of Black takes up almost no space with most compressed images, I wouldn't think it a problem.

Flipside

[Eternal One]

You guys really should consider PNG's. The decoding is not slow at all compared to any other format that has similar compression capabilities.

The LibPNG is free. It's very fast to implement using it, I did that to a project of mine in just 3 hours.