The glow effect is achieved using sprite outline in HDR colors (applied via shader) and bloom post-processing.
For the bloom effect KinoBloom is used. You can replace it with similar 3rd-party solutions.
Character sprite by Mikhail Pigichka.
Why the glow doesn't appear?
- HDR is enabled for target platform and tier (Edit > Project Settings > Graphics):
- Camera 'Allow HDR' is enabled:
- You've set 'Glow Brightness' high enough:
Why the glow appears on the whole image?
Make sure 'Threshold' value of the bloom image effect is set high enough. It's usually 1 to 1.5, depending on the bloom solution.
Why I get a NullReferenceException in build?
Most likely the outline shader is not included to the build (it happens when none of the included assets reference SpriteGlow component directly). You can force-include the shader by assigning it to the "Always Included Shaders" in Edit -> Project Settings -> Graphics.
It's still not working
Please check the active issues.