3D Textures

OpenGL OpenGL: Advanced Coding
21

In case you haven’t seen it on the other threads, GeForce3 does support 3D textures, and they will be turned on in a future driver release.

Thanks -
Cass

22

Woohoo!

23

mmmm 3D Textures.

-SirKnight

24

Will, that be sooner than later? Any time frame?

25

Sorry - “Soon” is all I can say.

Cass

26

Cass,

Can you tell me what GL_MAX_3D_TEXTURE_SIZE will be? Time to place an order and start rewriting my algorithms.

Thanks.

27

ffish,

The max size is 512x512x512 for regular RGBA textures, but it may be greater for compressed volume textures (not sure). Once it’s supported in the driver, you can use the proxy mechanism to determine max size.

In case it wasn’t made clear before, 3D textures on GeForce3 support mipmapping and take up only one texture unit (meaning you can have 4, projective, mipmapped 3D textures active in a single pass).

Thanks -
Cass

28

Oh my god

I almost have to pinch myself . This sounds great. Unfortunately, it also makes most of my year’s work up to now kind of redundant and means I need a GeForce3.

Thanks Cass and nVidia (and Matt for the drivers when they come )

29

The maximum size will always be 512^3, no matter what the format. Obviously, there are some memory size constraints that you can hit fairly quickly there… but this is no different from what will happen if you try to use those 4096x4096x6 cubemaps.

  • Matt
30

hm… nice nice… four uncompressed 512^2 RGBA 32bit textures: 2giga… hm… gf3 with 2giga ddr ram on it? would be nice