What does it look like: rilem.nl/c3-rimlight
A rim light is placed behind a subject that exposes the outline or rim of the subject with light. This lighting highlights the contours of a subject and creates a dramatic and mysterious effect.
This effect can be very helpful to make objects stand out and add some texture to a game scene. In Photoshop or other similar software you can quickly fake such an effect by applying an 'inner-shadow' effect with a bright color to an image.
Following that logic, I created a GLSL effect for Construct 3 which does exactly that. By playing with the effect parameters and making the effect move, you can make a pretty convincing back light!
This addon is provided completely free. Feel free to use it in any of your projects.
Update 02-02-2025
Frederico (fedca) was kind enough to update the addon and make some massive quality improvements:
- it now handles correctly if the image is rotated on the spritesheet
- rim light thickness now works with texel size, so it stays the same size regardless of the render resolution when using fullscreen quality high