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GPUOpen-LibrariesAndSDKs / BlenderUSDHydraAddon

This add-on allows you to assemble and compose USD data with Blender data and render it all using various renderers via Hydra.
Apache License 2.0
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Cannot load materialx graph #253

Open fire opened 2 years ago

fire commented 2 years ago

https://github.com/AcademySoftwareFoundation/MaterialX/blob/main/resources/Materials/Examples/GltfPbr/gltf_pbr_boombox.mtlx

fire commented 2 years ago
  1. Install usd hydra https://github.com/GPUOpen-LibrariesAndSDKs/BlenderUSDHydraAddon/releases/tag/v1.1.1
  2. Install blender 3.2
  3. Enable
  4. Import materialx
  5. No change.
  6. Cannot put material on the mesh in blender.
VascoPi commented 2 years ago

Hi, The implementation of the glTF PBR material has been added since MaterialX 1.38.4 (Add glTF PBR #861) Currently, BlenderUSDHydraAddon supports MaterialX 1.38.0.

bsavery commented 2 years ago

@VascoPi please make a task to update to latest MaterialX

VascoPi commented 2 years ago

Sure, here's the ticket.

VascoPi commented 2 years ago

blender_hfuCmOJdc5 blender_kVvckbhEUx

Quick review. I was successful in building HdRpr using MaterialX v1.38.4. Importer and render (Full and Interactive) work well, at the moment no issue is observed.

A discussion with HdRpr devs is needed to update MaterialX version.

VascoPi commented 2 years ago

@bsavery An approach without updating MaterialX version, adding a single file gltf_pbr.mtlx and generating mx classes work as well.

fire commented 2 years ago

Can you post some instructions and sample blend project files?

I wanted to tell others this workflow works today without release, and whenever the version is updated, we can forward update.

VascoPi commented 2 years ago

Here's the blend scene. gltf_pbr_blend_scene.zip

Here are the files you need to put into BlenderUSDHydraAddon_1.1.1_Blender_3.1_Windows.zip before installing the addon. gltf_pbr_materials.zip copy gltf_pbr.mtlx -> BlenderUSDHydraAddon_1.1.1_Blender_3.1_Windows.zip\hdusd\libs-3.10\libraries\bxdf\ copy gen_gltf_pbr.py -> BlenderUSDHydraAddon_1.1.1_Blender_3.1_Windows.zip\hdusd\mx_nodes\nodes\

fire commented 2 years ago

@VascoPi When will this be in a new version of the BlenderUSDHydraAddon?