[osg-users] Vertex texture fetch in r600+ ATI cards

Robert Osfield robert.osfield at gmail.com
Sat Jul 19 06:56:39 PDT 2008

HI Marko,

Thanks for keeping the list informed on what you're finding.  Drivers
bugs without a doubt, but certainly worth knowing.  ATI have some work
using the OSG in the past, so perhaps they wouldn't find it too
difficult to reproduce the bugs you've been finding.


On Sat, Jul 19, 2008 at 2:14 PM, Marko Srebre <marko_srebre at t-2.net> wrote:
> I realize this is a driver bug and not osg related, still I post this in
> hope this knowledge saves someone's precious time wondering why VTF makes
> things acting very weird.
> For courageos ones venturing into ati glsl wonderland, this is what I have
> discovered. The unifrom name of the "baseTexture" from osgshaderterrain must
> be alphabetically before the "terrainTexture", as it is by default. So for
> example renaming the heightmap to "aterrainTexture" render the object white,
> while "cterrainTexture" works just fine.
> Marko
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