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Unity Shaders and Effects Cookbook by Kenny Lammers

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Basic Photoshop-like blend modes with screen effects

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 render texture. 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 render texture. This becomes a very powerful technique, since it gives the artists in a production environment, a way to simulate their blending modes in 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 of Photoshop blend modes ...

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