> Have I understood correctly that with ATI-cards (2600 Pro) I can't read
> textures from vertex-shader?
The hardware capability is there (Radeon HD 2600 is a DX10 card, and
DX10 requires support for reading textures from all shader stages -
vertex, geometry, fragment). Whether that capability is exposed in
current Apple's drivers, I don't know.
The older ATI card generations did not support reading from textures
in a vertex shader (everything up to and including Radeon X1950).
--
Aras Pranckevičius
work: http://unity3d.com
home: http://aras-p.info
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