Renamed to elm-messenger/elm-regl. That is where the repository lives now. It has not been published as a package under the new name.
Versions published as linsyking/elm-regl still install under that name. 5 versions of 15 come from the new location (see their notes).
Compose two renderables using various shaders.
Draw the dst renderable masked by the src renderable.
Linear fading effect.
Fading effect using a mask image.
Mask image is a gradient image, similar to this.
Draw the dst renderable over the src renderable.