Unable to change shader behavior based on custom attribute

0 votes

I am trying to add a custom attribute to polygon, which will affect its render output.
To test this code, I am trying to render a white polygon if attribute is > 0.1.

I have implemented two paths here.
1. Based on customvalue, change polygon color before the color is passed into the shader. https://github.com/ashwin-vbs/godot/commit/4f85210782669ab760b170a4bcc7532cc93deb90
2. Pass customvalue into shader, and based on that, modify frag_color. https://github.com/ashwin-vbs/godot/commit/cd7a6012f859b2b47a3e89968f705c2d8d329320

The first method work - I clearly see the polygon rendered white.
The second method does not work. I dont see any polygon being rendered.

I am new to both glsl and godot internals, and am probably doing something wrong.
Could someone help me get the shader working please?

Godot version 3.5
in Engine by (12 points)

Is this translated visual shader ? If so, it would be much easier to read if You provided screenshots

by (8,101 points)

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