On 13 Aug 2008, at 17:01, Ian Grant wrote:
I deleted the clear patch and got the same as Chris - seemed to work - but there was a triangular artefact diagonally across the image.Change the subdivision value and it goes crazy.
This is exactly the behaviour I was having...
On 13 Aug 2008, at 16:45, Christopher Wright wrote:For me (Nov 2006 MB, IntelGMA950) disabling the clear patch makes it perfectly fine. So I'm guessing this is a bug. Also, tweaking the source seems to make it flip out and do weird stuff for me.
Where you not getting the diagonal bug? At low or zero speeds I couldn't see any difference, but when the plasma was animated quickly there was diagonal artifacts, and while changing the subdivision it would flash random images - just like Ian mentions...
scaleX and scaleY might want to go in the vertex shader though, and pos should be a varying -- might make is a bit snappier, or maybe that's completely wrong (I didn't look too closely at the glsl code, I'm afraid)
Yea good point, I changed it and its included in the above composition. Didn't have a massive impact, fps changed from 6.3 to 6.5 (with VBLSync disabled) - but I feel psychologically better knowing that its a bit more optimized :P
attached is the fixed (at least on my ATI machines) composition
Plasma GLSL.qtz
Description: application/quartzcomposer
Thanks for the tips!
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