Hi. Ive taken another look at this issue, and have successfully run
this vertex shader (a variant thereof) within a QC plugin I am
developing.
The shader within the plugin works as expected with both video and
image sources, however it does not work within the GLSL patch object
with video sources (from the video input of QT playback patches, only
the image loader patch works as expected).
So something in the GLSL patch object is not happy wrt texturing,
whereas the GLSL shader within a QCPlugin seems to work just fine...
ill make a simple plugin and shader case and file a radar sometime soon.
On Nov 5, 2007, at 6:14 PM, Pierre-Olivier Latour wrote:
I looked into this composition and it seems indeed that some types
of images do not work correctly when textured from inside a vertex
program, although they work fine inside the fragment program (at
least on my X1600).
This looks like a potential GLSL issue, so I cannot think of any
workaround.
<Vertex_Displace_Test_04-11-07.qtz>
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Pierre-Olivier Latour - [EMAIL PROTECTED]
Technologist - Apple, Inc.
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