Unity 5.6 - Possible to disable camera shared render target?

Camera & Cinematics Camera
1

Upgraded my project to 5.6, and I now seem to have cameras that don’t respect the depth buffer. This seems to be caused by the following change in the release notes:

Graphics: Refactored camera render ordering code. When a Scene is rendered, it now figures out which cameras can share the same render target. The rules for this are:

  • Cameras must use the same display to share the same render target.
  • Cameras must share the same viewport.
  • All cameras must have a depth buffer, or none of them must have a depth buffer.
  • If the Scene is being viewed in VR, the cameras implicitly share the same render target.

These cameras are then split into a stack, which is rendered into a shared Texture based on depth ordering. This Texture has the most common settings found in the cameras in the stack.

My problem is that I have:

  • A full-screen camera for background UI elements. (Depth 1)
  • A split-screen camera for mid-ground 3D objects. (Depth 2)
  • A full-screen camera for foreground UI elements. (Depth 3)

Unity detects that camera 1 and camera 3 share the same viewport, and render them together. Camera 2 is then rendered on top of Camera 3, despite Camera 3 having a larger depth buffer.

My current solution is to change the viewport width of Camera 3 from “1” to “1.1”, to prevent it sharing the same render target as Camera 1. It solves my problem, but it seems like a flawed workaround. Is there a setting I’m missing?

2

Was wondering how you are getting on with this issue? Seeing similar problems.

3

No fix unfortunately. Just using the workaround of changing the viewport dimensions.

4

Issue updated hopefully fixed soon Unity Issue Tracker - Camera Depth is ignored when setting both cameras Viewport other than (0;0;1;1)

5

I think I have got a similar issue and I think it is related with this. It is happening in Unity 2017.1.b5 and also 5.6.1.

The point is that besides the viewport problem there is a problem with the postprocess effect attached to each camera. So when the postprocess components are enabled everything gets broken, it seems a zfighting problem in which the models of my 3rd camera in the ordering are not being rendered because some postprocessing is attached to a previous camera.

So I cannot for instance apply a dof effect only to the scene and not to the player models, I can only apply the effect in the last camera.

I cannot understand how Unity has this radical changes and cannot understand why the camera render ordering is something that needs to be touched.