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3 Commits

Author SHA1 Message Date
Elias Naur 4bab6fcf32 internal/f32color: add colorspace-correct function for alpha scaling 
Package material's ad-hoc mulAlpha didn't take the sRGB color-space
into account, which meant that alpha-scaled colors were subtly wrong.
Introduce f32color.MulAlpha and convert all uses to it.

Thanks to René Post for finding and debugging the issue.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
 2020-09-28 09:06:40 +02:00
Viktor 42f07ca538 internal/f32color: use explicit type to avoid allocation 
f32color.RGBAFromSRGB is used extensively in package gpu, avoid an
interface type to save allocations.

Signed-off-by: Viktor <viktor.ogeman@gmail.com>
 2020-06-21 11:20:36 +02:00
Egon Elbre 7c1a21ce56 add f32color.RGBA 
Signed-off-by: Egon Elbre <egonelbre@gmail.com>
 2020-03-12 13:21:34 +01:00