I have a post processing shader. For simplicity, my post processing shader only shows the _CameraDepthTexture at the given uv. This shader is written in code.
I'm moving to shader graph and I want to have a material for all of my objects and achieve the exact same effect (show the same depth color), althought I can't use Scene Depth node. How can I generate the exact same color for my objects in Shader Graph?
As the depth is related to the distance between the camera and the objects, I'm trying to set the depth like this:
- I take the vector (vertex world position - camera world position).
- I project this vector into the camera direction vector
- I remap this length of the projection vector from (near plane, far plane) to (1, 0)
It looks like my depth is the same as _CameraDepthTexture, but when objects are too close to the camera, they are different (my version is darker).
How can I write a shader without Scene Depth node that generates the exact same color as _CameraDepthTexture? My camera is orthographic with orthographic size 10.4, near = -50 and far = 50.
