Problem summary
Transforming normal maps with matrix alters normal information at render time. Customer reported version
modo.15.1v2 Customer reported platform
windows10 Steps to reproduce
1) Download the attached scene file and open it in Modo.
2) Go to the Render layout.
3) Make sure the Preview Render is running.
4) Expand the UVrotation material group and select the material group inside.
5) Go to the Texture Locator tab and adjust the UV Rotation value, notice how the red normals are rotated with the texture.
Expected behaviour
The texture should be rotated, but not the normals.
Actual behaviour
The normals are being rotated with the texture.
Workaround
Unknown.
Reproduced by support
This bug has been reproduced in:
15.2v1 - Windows 10
15.1v1 - Windows 10
15.0v1 - Windows 10
14.2v1 - Windows 10
14.1v1 - Windows 10
14.0v1 - Windows 10
13.0v1 - Windows 10
12.2v2 - Windows 10
Earliest version tested
12.2v2 - This issue appears to be in all versions of the product.