Needed by https://store.steampowered.com/app/1138210/Esperia__Uprising_of_the_Scarlet_... demo (and presumably the full game too); without this, it throws a message box saying No Interface | 1 | 88990028 on first entry to any combat (the 1 varies depending on which specific effect is unimplemented), then segfaults if any character gets a critical hit (those are prefixed with a bar showing the character's eyes).
Even with these stubs, the game looks glitched when getting a crit, but better ugly than segfault.
The game also needs Color Matrix, Gaussian Blur and Flood effects relative to Proton 10, but those three were already stubbed in Wine 10.n.
-- v2: d2d1: Add Saturation effect stub d2d1: Add Hue Rotation effect stub d2d1: Add Directional Blur effect stub d2d1: Add Brightness effect stub d2d1: Add Blend effect stub