Make sure your render in image has a clear patch in it. Sorry if this is obvious.
m.phone On Aug 31, 2012, at 8:33 AM, "Dean Pulsifer" <[email protected]> wrote: > I am trying to prototype an OpenGL SL solution in Quartz Composer. I can get > a convolution kernel working inside Quartz Composer (Thanks to help from this > list). > > I really need to run two convolution filters which means I need to finish one > pass and then run another shader on the output of the first pass. I thought > that Render In Image would be the correct way to do this. Put the first > shader inside a Render In Image macro and then feed that into the second GLSL > Shader. > > I got some really strange results. I bypassed the second shader and just put > the output from Render In Image on a Billboard. I fed a movie from a video > camera in. It almost looks like every other frame is correct, but every > other frame has junk that almost looks like an error message in it. > > Questions: > > 1) Is Render In Image the correct way to collect the output of a Shader to > pass on to another macro? (If not, is there a good way to do this?) > 2) Are there any special tips or tricks to getting a GLSL shader working > inside a Render In Image macro? > > > Thanks, > Dean Pulsifer > -------------------- > Believe in yourself, say what you mean, do what you say > > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Quartzcomposer-dev mailing list ([email protected]) > Help/Unsubscribe/Update your Subscription: > https://lists.apple.com/mailman/options/quartzcomposer-dev/michaelneuman%40eleveninc.com > > This email sent to [email protected] _______________________________________________ Do not post admin requests to the list. They will be ignored. Quartzcomposer-dev mailing list ([email protected]) Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/quartzcomposer-dev/archive%40mail-archive.com This email sent to [email protected]
