To add a film grain effect to SweetFX, https://melonplayground.co
you need to download and install the ReShade package. Once installed, you can find the FilmGrain shader in the SweetFX/Shaders/ folder. To configure the shader, you can adjust the Intensity, Variance, Mean, and Signal-to-Noise Ratio settings in the SweetFX_settings.txt file in the game's main installation folder. Finally, make sure to enable the shader in the ReShade window.