How to use Game Properties in GLSL?

[WhiteRoses54 (IceCat332)]

I want to use my own game properties in shaders, specifically 2D filters. How can this be accomplished, and can anyone please show me how this can be done.

As for UPBGE 0.4 (future macOS release) someone should later be able to show me how to do it in Metal.

[musikai]

You can simply read the game property in the glsl filter as “uniform” variable.
Example:

UPBGE 0.3 - glsl mist

Hi, here is a customizable glsl mist for UPBGE 0.3. (did you miss the mist?) UPBGE_0.3_glsl_mist.blend (1.3 MB) By setting the game properties you can choose between 4 different mist-models, set the density, start distance and if it should start in radial form from the camera. The color can be set by its object material. [grafik] It was heavily inspired by this script: https://blenderartists.org/t/glsl-controllable-mist/630061/16

There the number keys 1,2,3,4 sets the mist type and mousewheel changes amount

[WhiteRoses54 (IceCat332)]

So, “uniform float time” reads from a Timer property? If so, cool. This would be applicable to Metal as well. Metal is similar to c++ apparently.

[musikai]

yes, if the Property name is “time”