Custom layer incorrectly renders the alpha color channel if the color has a white tint.

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#7,434 opened on Oct 17, 2018 2 comments 0 reactions 1 assignee View on GitHub

@ansis is already working on this.

Since Oct 17, 2018.

docs :scroll: needs discussion :speech_balloon:

Description

if the color has a white tint, alpha color channel gets Incorrectly rendered
Lib version is **mapbox-gl-js: 0.50.0**

**Example:**
https://jsfiddle.net/boyur/2f5tmj7x/70/

_For example orange color with white tint gets rendered as:_
`gl_FragColor = vec4(1.0, 0.7, 0.5, 0.1);`

![screenshot 2018-10-17 at 18 53 13](https://user-images.githubusercontent.com/11750653/47099441-f92b4280-d23d-11e8-9ffa-7b8a07dbd300.png)

_Red color is rendered correctly:_
`gl_FragColor = vec4(1.0, 0.0, 0.0, 0.1);`

![screenshot 2018-10-17 at 18 53 02](https://user-images.githubusercontent.com/11750653/47099449-fe888d00-d23d-11e8-953e-52de69347da4.png)

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