openglviewer

Simple OpenGL viewer

Status

Not yet working.

Supported USD files

USDC(binary), USDA(ascii) and USDZ(zip container)

Requirements

• C++14 compiler
• OpenGL/GLES 3.3 or higher
• cmake

Build

$ mkdir build
$ cd build
$ cmake ..
$ make

Run

$ ./usdz_glview <input.usdz>

Optional: Embed shaders(requires Python)

If you modify shader frag/vert, please update shader source code by running

$ python embed_shaders.py

Alternatively you can use xxd -i input.frag to generate embeddable shader code.

TODO

• Embed shader codes to C++ source code.
• GeomSubset(per-face material)
  • per-face material shading support may take time. Use raytraced viewer(../sdlviewer) for a while if you want to visualize GeomSubset
• Bump/normal mapping
  • Need to compute tangent basis
• UDIM texturing
• Subdivision surface
• Animation
  • Timesamples animation
    • Xform
    • GeomMesh(Vertex animation)
    • Camera, Light, etc.
  • usdSkel
    • Vertex skinning
    • Morphing(Blend shapes)

Third party libraries

• imgui : MIT license.
• glfw3 : zlib license.