[meshroom] ScenePreview: Hide backfaces in 3D render #1908
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Description
This PR adds a transparent shader on backfaces in the ScenePreview render to avoid meshes that would hide the region of interest.
For the line art mode it was a bit more complicated because the render is created as a post-processing effect. So the only way I found was to use the Quantitative Invisibility feature, by setting the minimum and max to 0 and 1 respectively we can see through the first surface. It's not a perfect solution though