NME material preview different to scene

Questions
1

I’m working with NME for the first time. Trying to build a simple low-poly Ocean Shader. I found the following two introductory tutorials, that I have tried to follow:

Vertex Shader: Node Material Editor: Vertex Shader - YouTube
Fragment Shader: Node Material Editor: Lights and Textures - YouTube

I have been able to follow the vertex shader without issue and can get a working sine wave. However, am really struggling to get a basic Fragment Output consistent across the NME & scene.

This is my node setup & material preview:

Screenshot 2021-03-13 at 16.30.42
Screenshot 2021-03-13 at 16.30.423086×1802 659 KB

In my scene however, it renders white, with the occasional blue/black triangle. The mesh I am rendering on is a plane that was subdivided and then had it’s faces triangulated.

My scene lighting does contain a HDR that I added with the following code, and I can only think that the node setup is struggling with the HDR for some reason?

const hdr = new BABYLON.HDRCubeTexture("/assets/hdr/sample.hdr", scene, 512);
scene.environmentTexture = hdr;

If I use the default material, then I do get a nice output, but I’m hoping to use the node editor in order to give myself more control over the waves (via vertex output).

All help truly appreciated. Thank you

2

Scene Output:

Screenshot 2021-03-13 at 16.28.53
Screenshot 2021-03-13 at 16.28.531564×1188 108 KB

3

Using the default shader in the scene does produce nice HDR reflections, etc. So, I’m aiming for this effect with the fragment output, but with a wave controlled in the vertex output:

Screenshot 2021-03-13 at 16.25.30
Screenshot 2021-03-13 at 16.25.301930×1268 322 KB

4

SOLUTION:

  • It turns out this was an issue with the Ocean mesh. I had scaled up x 300 in Blender, and exported. Within the NME, the lights seem to struggle to interact with the mesh properly. To correct this, I used “Apply” (Ctrl+A in Object Mode) and applied the scale such that the object’s scale was equal to 1.

  • The other move I need to do was to multiply the light node’s “Diffuse” x “Specular” such that it would reflect from the light in the scene.

I still do have an outstanding issue in that the material doesn’t reflect from the sceneEnvironment texture at all, but the initial issue is at least resolved.

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