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Question by Power37371 · Jul 09, 2021 at 02:22 PM · shadergameobjectshader programming

Send Texture to shader that has every gameobject on screen a different colour

Hi, Ive been messing about with shaders and trying to make an outline shader from scratch (To help me learn how to make shaders from code) and ive come across a problem with my shader where if 2 objects faces have the same normal but different depths that I cant draw an outline unless I can tell the shader that each face belongs to different objects. I cant use the depth buffer if the normal is the same because it causes problems for slightly rotated objects at certain camera angles (the whole face gets outlined.) So im wondering if i can get a texture of every on screen, with each object being a different colour. Is this possible to get/make and send to the shader?

Image shows that from one angle when the faces align, theres no outline, but that one box is lower than the other

problem.png (91.3 kB)
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