Camera.Render() doesn't render UGUI

Unity Engine
1

Hi there,

I’m trying to render a Camera to a RenderTexture on top of some already existing content. However when I set the clear flags to DontClear, set the camera’s RenderTexture and run Camera.Render(), nothing shows up.

If I just set the Camera’s RenderTexture and leave it to run, it writes to the RenderTexture properly, however when I then try and Graphics.Blit that to my other RenderTexture, it fills it with black first, despite the Camera having been set to DontClear.

For brevity’s sake:

  • Is there an issue with rendering a Canvas using Camera.Render()?
  • If I want to Graphics.Blit just semi-transparent white shapes with no background to a texture, does anyone have a suggestion of what Shader I should use? I tried Unlit/Transparent which didn’t seem to work.

Any help appreciated!

2

yeah this totally sucks. im experiencing it aswell

3

Firstly you probably don’t want to use DontClear. DontClear isn’t transparent, it means don’t erase whats already there. Use solid colour with an alpha of 0.