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texture units...

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Hiya, simple question... If I my gfx card only has 4 texture units, why does it say it can support up to 16 texture pass per pixel? Does that mean rendering the scene 12 times plus the 4 textures? 4 seems rather low to me, Ive read about people using 7,8 texture units, whats the deal with this? Im just an idiot, lol. Thanks.

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The fixed function pipeline supports 4 textures on nvidia hardware. Move to fragment programs to get access to the texture image units, of which there are 8-16 ( I can''t remember how many the FX has - 16 I think ).

You have to remember that you''re unique, just like everybody else.

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nVidia e-GeForce Fx 5200 128 agp...

"Move to fragment programs to get access to the texture image units, of which there are 8-16 ( I can''t remember how many the FX has - 16 I think )."

then does that mean that I potentially can bind up to 16 textures, say to my terrain?

thnx.

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No, it means you can bind 4 textures at a time but you can sample from them up to 16 times - you could sample from each of your 4 textures in 4 different places for example.

edit: Actually, I think the GeForce FX 5200 can access 16 textures simultaneously when using PS 2.0

[edited by - mattnewport on May 7, 2004 2:08:07 PM]

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All Geforce FX:s can use 8 discrete textures at a time, and have an unlimited texture read count (up to the hard limit of 512 instructions, of which at least 1 must be the write to color out register).

-Nik

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quote:
Original post by Nik02
All Geforce FX:s can use 8 discrete textures at a time, and have an unlimited texture read count (up to the hard limit of 512 instructions, of which at least 1 must be the write to color out register).

-Nik

Doesn''t PS 2.0 require cards to support 16 sampler registers? I''ve just tried 11 simultaneous textures on my GeForceFX 5600 and it works. I think 16 is the limit, not 8.

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Did you use more than 8 different textures?
I am mis-informed if the limit is more than 8.

EDIT: Apparently 8 is the limit per-clock. So, per shader, you could use up to 16 textures.

[edited by - Nik02 on May 7, 2004 3:01:17 PM]

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