afaict, this is a limitation of the "particle API" used by Gem.

while the pColor() function (as used in part_color.cpp:56) has indeed an "alpha" value, this is only a scalar, and not part of the 3D(sic! there's now 4th dimension for the alpha) space that forms a domain.

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[bugs:#228] part_color ignores alpha component

Status: open
OS: any
Release: unknown
Labels: particles
Created: Tue Aug 19, 2014 04:24 PM UTC by Anonymous
Last Updated: Wed Aug 20, 2014 02:53 PM UTC
Owner: nobody

Using Gem 0.93.3 on Windows 7 32bit.

I noticed that when using a part_color, the 4th value (alpha component) is ignored. I looked at the code, and I think it is line 56 of part_color.cpp. When rendering, the color is not passed into the function.

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