Creating dynamic visualizations with Three.js using RawShaderMaterial and LineSegments

Currently, I am working on a three.js scene where I am rendering points and line segments. The scene displays perfectly when I use a LineBasicMaterial material for the lines:

/**
* constructor for the gl manager
**/

function World() {
  // Code implementation here...
}

// Other functions and methods in the World prototype...

var world = new World();
// CSS code snippet here...

I have encountered difficulties in achieving the same scene using rawshadermaterial for the lines. Below is one approach I have attempted to configure the lines for the raw shader material:

World.prototype.addEdges = function() {

        // Code implementation here...

}

Despite my efforts, this method does not render anything. Could anyone provide guidance on how I can successfully render the lines with the raw shader material as described above? Any advice or insights would be greatly appreciated!

Answer №1

It appears that the issue arises from using gl_PointCoord in the fragment shader when rendering lines instead of points. By removing the specified code snippet, the lines render correctly:

vec2 point = gl_PointCoord - vec2(0.5);
if (length(point) > 0.5) discard;

Check out the demo here: https://jsfiddle.net/Ldynhxkq/

Consider utilizing separate shader programs for each primitive type to avoid this issue.

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