webgl effects/shaders - for both layers and objects

GDevelop general Feature requests
#1

well, construct2 has them and they are really neat.
scirra.com/tutorials/1334/c … onstruct-2
scirra.com/manual/147/effects-dialog

For example if you want to add a vignette, or a flashlight effect, etc.
Fake depth of field (blur). Easy paralaxing. Sprite reflection. Other various effects.
It can really help improve the visual presentation of a game and add depth to it!
:smiley:

I would very much like it if we had them in gdevelop.

For layers: