Unity 2018 Shaders and Effects Cookbook - Third Edition

Using basic Photoshop-like Blend modes with screen effects

The screen effects aren't just limited to adjusting the colors of a rendered image from our game. We can also use them to combine other images with our RenderTexture. This technique is no different than creating a new layer in Photoshop and choosing a Blend mode to blend two images together or, in our case, a texture with a RenderTexture. This becomes a very powerful technique as it gives the artists in a production environment a way to simulate their blending modes in the game rather than just in Photoshop.

For this particular recipe, we are going to take a look at some of the more common blend modes, such as Multiply, Add, and Overlay. You will see how simple it is to have the power ...