RenderTexture shows output from other camera as background (HDRP)

Questions & Answers
1

I have a camera that only renders objects on a certain layer to a renderTexutre. Background is set to none (transparent). I’ve changed the color buffer format to R16G16B16A1 to be able to do this.

But the output of the renderTexure contains, besides the wanted objects, output from another camera/renderTexture. Always behind, as a ‘background’.
I have several cameras that all write to a renderTexture. And depending on their depth, i get to see that output/renderTexture.

Any idea how to solve this?

176507-screenshot-2021-02-24-1443126.png

The screenshot shows a rectangle in which the blue line should be rendered (this is correct)
But within the rectangle there is output from another camera (the sky, building and tree), this is unwanted.

2

This most likely means that your camera isn’t clearing the render target - make sure to set the camera’s clear flags to ‘Color’.