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Linear color space is not supported

Message

Linear color space is not supported.

Explanation

Prior to version 6.0.0 Playworks Plugin targeted WebGL 1 API, which often lacks the appropriate extension to support the reading of texture data in a linear fashion. Due to that limitation, it is impossible to support rendering in Linear space. In order to use this feature, please update Playworks Plugin to version 6.0.0 or newer.

Steps to fix

Switch the color space used by the player to "Gamma". This can be done by navigating to Edit > Project Settings > Player in main Unity menu:

troubleshooting-plugin-ui-plugin-expert-linear-color-space-player-settings

PRO TIP
You can use a separate build target (i.e. WebGL) to amend the color space setting to keep original project untouched, if switching to Gamma space globally is undesirable. In order to do this, please switch to WebGL build target before running the export.