EEVEE & EEVEE Next: GPU Subdivision is causing incorrect UV Map tangent #114617
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Reference: blender/blender#114617
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System Information
Operating system: Windows 11 & Ubuntu 22.04
Graphics card: Tested on both RX 6800M & GTX 1050
Blender Version
Broken: Any blender version with GPU subdivision support (tested on Blender 3.6.5)
Worked: When GPU subdivision is turned off
Short description of error
When GPU subdivision is turned on, tangent node with UV Map produces different outputs than when GPU subdivision is off. The correct value is when GPU subdivision is off since it provides correct calculations when I use it for various shaders. This bug only happens on Eevee or Eevee Next, cycles aren't affected.
Exact steps for others to reproduce the error
I subdivided a cube 3 times and used it to view the output of tangent node. It produces a different render when I turn GPU subdivision on and off. Here's the blend file to check it: gpu_subdiv_tangent_bug.blend
Hi, thanks for the report. This is same as #99629, closing.