Why would "_ColorPyramidTexture" be black?

Unity Engine
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1

Hi all,

I was trying to sample _ColorPyramidTexture (manually and through “HD Scene Color” node), and saw in the Frame Debugger that the texture pass to my shader is 4x4 px black texture 2d array.

Thing is, my shader renders at Transparent stage, _ColorPyramidTexture should be available at this point.

Can anyone offers some guesses on why?

Thx

2

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6867239--801188--Screen Shot 2021-02-23 at 18.22.21.png1662×590 67.9 KB

Turns out the option is “Refraction” in Frame Settings, if you disable it then the _ColorPyramidTexture is black.

(could use some documentation on this!)