Using C++ code in VTK.js

[Donny_Zimmerman]

@lassoan Probably the biggest issue is that OpenGL ES (which WebAssembly uses) doesn’t support TextureBuffers. I had to make some modifications to the VTK code to use point scalars instead of cell scalars to get around the issue. See below thread:

vtkScalarBarActor in WebAssembly

@ken-martin Here is a screenshot of the breakpoint and the values of the parameters to bindTexture: [image] Here is the stack trace at that breakpoint: _glBindTexture (SwisRadar.js:10994) __ZN16vtkTextureObject8ActivateEv (SwisRadar.wasm:0xa5654) __ZN25vtkOpenGLPolyDataMapper2D13RenderOverlayEP11vtkViewportP10vtkActor2D (SwisRadar.wasm:0x69c73) __ZN10vtkActor2D13RenderOverlayEP11vtkViewport (SwisRadar.wasm:0x127ecc) __ZN17vtkScalarBarActor13RenderOverlayEP11vtkViewport (SwisRadar.wasm:0…