Perl 6 - the future is here, just unevenly distributed

IRC log for #openframeworks, 2014-03-22

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All times shown according to UTC.

Time Nick Message
00:35 OliverUv anyone got experience trying to feed an ofxFbo's texture into an ofxFX post-processing ofxFXObject?
00:35 OliverUv i'm just getting a black screen for most of them, and when I don't I just get the same output I had before, with the lower rght quadrant flickering some background colors
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16:50 zanilo hello all!
16:51 zanilo I have a question: if I want to find on which port my arduino is on (auto detect)
16:51 zanilo would send a byte on each port and try to read from it, be a good approach?
16:55 zanilo (I'm not sure if I'm doing it correctly)
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19:44 austinslominski Anybody here with some shader experience?
19:46 jvcleave austinslominski - a little
19:46 jvcleave def not expert
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19:55 austinslominski I need to apply a new texture to different gray values on my alpha mask, any chance you might know a direction I could go off on?
19:57 jvcleave have you seen the alphaMaskingShaderExample?
19:58 austinslominski yeah! But my problem is I want to apply a different shader to each different shade of gray on my alpha mask
19:58 austinslominski didn't seem like there was anything on that really
20:06 jvcleave cool - yeah - that one is a good starting point with that kinda of content
20:06 jvcleave you mean apply a different color to each value of gray?
20:09 austinslominski Yeah. I have my mask, and there are areas with different shades of gray, where I want to use different videos on each section. I was told on the of forums that I'll need to set a uniform in the shader to define the mask pixel value, but I don't really know what is meant by that.
20:15 jvcleave that is just how you tell the shader what the gray values are - for instance in alphaMaskingShaderExample the uniform/name is maskTex
20:18 austinslominski ok, so say maskTex has grayscale patches of 50 and patches of 150, how would I tell the shader to put video 1 to the 50, and video 2 to the 150?
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20:47 jvcleave have you tried it without a shader? you may not need it
20:47 jvcleave I'm not sure a shader is the best way to do that
20:50 jvcleave If there are any RPi users here please test this with your apps if you get a chance - the changes are fairly small but significant https://github.com/openframew‚Äčorks/openFrameworks/pull/2886
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