65 lines
1.1 KiB
Markdown
65 lines
1.1 KiB
Markdown
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# Simple OpenGL viewer
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## Status
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Not yet working.
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## Supported USD files
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USDC(binary), USDA(ascii) and USDZ(zip container)
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## Requirements
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* C++14 compiler
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* OpenGL/GLES 3.3 or higher
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* cmake
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## Build
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```
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$ mkdir build
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$ cd build
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$ cmake ..
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$ make
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```
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## Run
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```
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$ ./usdz_glview <input.usdz>
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```
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### Optional: Embed shaders(requires Python)
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If you modify shader frag/vert, please update shader source code by running
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```
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$ python embed_shaders.py
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```
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Alternatively you can use `xxd -i input.frag` to generate embeddable shader code.
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## TODO
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* [x] Embed shader codes to C++ source code.
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* [ ] GeomSubset(per-face material)
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* per-face material shading support may take time. Use raytraced viewer(../sdlviewer) for a while if you want to visualize GeomSubset
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* [ ] Bump/normal mapping
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* Need to compute tangent basis
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* [ ] UDIM texturing
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* [ ] Subdivision surface
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* [ ] Animation
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* Timesamples animation
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* [ ] Xform
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* [ ] GeomMesh(Vertex animation)
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* [ ] Camera, Light, etc.
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* usdSkel
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* [ ] Vertex skinning
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* [ ] Morphing(Blend shapes)
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## Third party libraries
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* imgui : MIT license.
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* glfw3 : zlib license.
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