ID 539465 - HDRI/Environment light appears upside down in the Arnold Standard Surface shader when using Transmission/Transparency in the Perspective Canvas

Follow

Problem summary
HDRI/Environment light appears upside down in the Arnold Standard Surface shader when using Transmission/Transparency in the Perspective Canvas
 
Customer reported version
mari.n/a
 
Customer reported platform
 
Steps to reproduce
 
1) Open Mari

2) Create an Example Project using Help> Create Example Project and open it

3) In the Node Graph, create a Arnold Standard Surface (Shader Network) and view it's output
 
4) In the Arnold Standard Surface node's properties, set Transmission>Weight to 1, in the Ortho Canvas, it appears correct:
 


 
5) Switch to the Perspective Canvas, the transparency appears upside down:
 

 
 
Expected behaviour
For the the transparent background image to appear the right way up, as it does in the Perspective Canvas or with the USD Preview Surface:
 

 
Actual behaviour
The transparent image from the background HDRI/Environment light gets flipped
 
Workaround
None
 
Reproduced by support
This bug has been reproduced in:
Mari 6.0v2 - Windows 10, CentOS 7.9
Mari 4.5v1 - Windows 10
 
Earliest version tested
Mari 4.5v1- The Arnold Standard Surface shader did not exist before this version
 

    We're sorry to hear that

    Please tell us why