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prman-pixar / RenderManForBlender

RenderMan for Blender render addon
MIT License
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UDIMs not working with Blender 2.79 and PRMAN 21.5? #555

Closed Viduttam closed 6 years ago

Viduttam commented 6 years ago

Hi Guys,

I'm unable to get UDIMs to work in PRMAN 21.5 and Blender 2.79

I have the below UV layout and using _MAPID_ in the filename section and have set the Atlas style to Mari

The first row of udim uvs are the ones that get the texture applied correctly however the second row seems to have some garbled textures applied while all the other rows appear to have missing textures(pink color).

I have tried using .png and .tex but both yield the same result. Also tried appending a pxrManifold2D node just to be sure that it is using the UVs but nothing seems to be working.

The last image below is a test render from Substance Painter of the same asset with exactly the same UDIM layout which is how I'm expecting the render to look like.

PRman render udim layout shader Substance painter render

Viduttam commented 6 years ago

Quick update ran tests with Blender 2.78c and PRMAN 21.5 and am still unable to get the UDIMs to work.

On going through the stats.xml only the first UDIM row of textures are being pulled over by the PRMAN (1001-1006) and no other texture is being fetched.

earlywill commented 6 years ago

I've had a go at addressing this. https://github.com/prman-pixar/RenderManForBlender/pull/559

You should have an object setting for choosing the flipV method. Although it's probably best to do this flip in PxrTexture.

Viduttam commented 6 years ago

Yup, Will's update has been merged with the latest code on github. Hence closing this issue! Thanks