How to filter 64bits cubemap with ati card

category: general [glöplog]
I hear this is not possible with an ati card.

Does anyone know 1. if this IS possible ?
and 2. how to do this ?

thanx in advance for advice.
added on the 2006-02-19 11:24:28 by magic magic
By 64 bits - you mean 4xFP16 one? (because there are lots of 4x16 integer formats that are filtered by lots of ATI hardware).
If its about 4xFP16 - then yes, no current ATI hardware does filtering of FP16 textures. So either you do not filter, or roll out filtering yourself in the pixel shader.
added on the 2006-02-19 12:00:47 by NeARAZ NeARAZ
gf can.
but than you have a gf only demo and that suxx

isnt their a coding trick which can solve this problem
and atleast it looks like a 64bits cubemap is filtered
with ati card or something like this
if you know what i mean?
added on the 2006-02-19 13:27:35 by magic magic
Hm... you can always blur your cubemap a bit and then just point sample! :)

Other than that... either do filtering yourself in the pixel shader, or use high-precision integer formats. ATI has nice whitepaper in their latest Radeon SDK that discusses use of integer textures for HDR and stuff - it's quite feasible.
added on the 2006-02-19 13:52:22 by NeARAZ NeARAZ