How to use WHITE in RGBW Matrix?

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collision.ost
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How to use WHITE in RGBW Matrix?

Post by collision.ost » Thu Mar 24, 2016 6:01 pm

Hey QLC Gang! :D

I wanne control the Ayrton MagicPanel R with RGBW LED's.
Image

But how can i control the White LED's? There no option in the RGB-Matrix Editor (Functions). There also no white response in the 2D channel monitor.

I wonder then why there is a senseless RGB function?

Please Help, thanks! :idea:

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mcallegari
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Re: How to use WHITE in RGBW Matrix?

Post by mcallegari » Thu Mar 24, 2016 6:01 pm

collision.ost wrote:I wonder then why there is a senseless RGB function?
That's quite rude of you. If you want us to consider your request, try to be nicer.
Quoting the "READ BEFORE POSTING - Issues reporting guidelines":
Always consider that if something doesn't work in your environment, it doesn't mean it won't work for everybody.

Baylink
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Re: How to use WHITE in RGBW Matrix?

Post by Baylink » Thu Mar 24, 2016 6:01 pm

mcallegari wrote:
collision.ost wrote:I wonder then why there is a senseless RGB function?
That's quite rude of you. If you want us to consider your request, try to be nicer.
Quoting the "READ BEFORE POSTING - Issues reporting guidelines":
Always consider that if something doesn't work in your environment, it doesn't mean it won't work for everybody.
Oh, please tell me this isn't a project where *the lead dev* hasn't learned the "don't bite the newbies" rule...

I was going to volunteer to help contribute to the doco, but if this is the tenor of things around here, the amount of clarifying questions I will have to ask to do that will get my head bitten off... and I need it for stuff. :-)

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mcallegari
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Re: How to use WHITE in RGBW Matrix?

Post by mcallegari » Thu Mar 24, 2016 6:01 pm

Baylink wrote:Oh, please tell me this isn't a project where *the lead dev* hasn't learned the "don't bite the newbies" rule...
I was going to volunteer to help contribute to the doco, but if this is the tenor of things around here, the amount of clarifying questions I will have to ask to do that will get my head bitten off... and I need it for stuff. :-)
I don't mind newbies. I do mind ignorant people instead, that come here with their poor judgements.

janosvitok
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Re: How to use WHITE in RGBW Matrix?

Post by janosvitok » Fri Mar 25, 2016 11:48 am

This is not yet supported.

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forresthopkinsa
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Re: How to use WHITE in RGBW Matrix?

Post by forresthopkinsa » Wed Mar 30, 2016 8:44 pm

Is this in the roadmap? I'm sure many would agree that this would be an incredibly useful feature, considering the rising prominence of RGBW fixtures :)
Light Designer for Hillsong Phoenix

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mcallegari
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Re: How to use WHITE in RGBW Matrix?

Post by mcallegari » Fri Apr 01, 2016 8:29 am

Ideas are one thing, the reality is another...

Computers work with the RGB color space, not RGBW.
So, since you're requesting a feature, you should also think of all the cases and elaborate a strategy to actually realize it.

For example, how can QLC+ decide when to control the white channel and when not ?
The simplest solution would be: when R == G == B, then use the pure white. Otherwise RGB channels will be used.

If this is what you want, then the request is clearer. If you have in mind more exotic usages, then please elaborate.

janosvitok
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Re: How to use WHITE in RGBW Matrix?

Post by janosvitok » Fri Apr 01, 2016 12:05 pm

See also this topic: www.qlcplus.org/forum/viewtopic.php?f=5&t=9298

afterglow has this somehow sorted, most probably somewhere here: https://github.com/brunchboy/afterglow/ ... or.clj#L88
(it's clojure, that's greek to me :) )

see also https://github.com/brunchboy/afterglow/ ... r-channels

boxy
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Re: How to use WHITE in RGBW Matrix?

Post by boxy » Fri Apr 01, 2016 2:16 pm

The word here, again, is gamut!

A fourth (or fifth or sixth for amber and UV) could happen, but the on-screen display could not reflect it. Search the other posts about this where I've put a formula in. I think converting RGB to white is not the way with the matrix; it should be a seperate 4th channel.

Loving the comment about QLC being disfunctional :D :D :D

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mcallegari
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Re: How to use WHITE in RGBW Matrix?

Post by mcallegari » Fri Apr 01, 2016 7:40 pm

Alright thanks, Robert's Excel studies seem the most scientific to me :)

One thing I don't understand though: after calculations on RGB channels, what is the contribution of the white channel ? The original one (column E) ?
Basically on RGBW_equation2.xlsx I would expect to see an additional column (N ?) with the final W value.

Also, there's one more thing to consider. At the moment, RGB scripts work only on RGB channels. Changing them for additional channels would be a mess, and moreover depends on what kind of fixtures you're using.

Indeed a delicate topic...

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