Inconsistent Normal Map evaluation: Houdini Vulkan vs. Karma

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Hello,

I'm running into an issue where normal maps render completely differently in Houdini Vulkan compared to Karma. The shading results suggest that one renderer is expecting a channel Y+, while the other might be Y-.

Is this a known inconsistency between the viewport renderers?

Screenshots are attached for comparison. Any insights would be appreciated!
Edited by Sebastien_Rousseau - March 14, 2026 15:42:50

Attachments:
HoudiniVK_normal.jpg (60.8 KB)
HoudiniKarma_normal.jpg (61.4 KB)

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Hi,

It would greatly help if you could share the hip file please. Thanks!
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