I have a Material I define thus…
var _material = new Cesium.Material({
fabric: {
type: ‘HeatPolygon’,
uniforms: {
colour: getColorForPercentage(value),
alpha: 0.8
},
source: _shaderSource
}
}
);
``
Which works as expected.
If I try to reuse this material by using Material.fromType(“HeatPolygon”), which I think is the correct procedure from reading the Fabric notes, something seems to disconnect either at the uniform level or with the shader.
I presume the shader source and the uniforms I have defined are not being referenced correctly or I am misunderstanding something.
I believe there is a note at the bottom of the Fabric docs that refers to this, but I’ve tried a number of approaches and still don’t seem to be getting it quite right.
https://github.com/AnalyticalGraphicsInc/cesium/wiki/Fabric : Materials in the Rendering Pipeline
If I simply recreate the Material each time I use it, with different values, then this all works fine. But that seems like a wasteful / bad approach to me.
Am I going beyond the scope of what is possible right now, or just being dumb?
Thanks for any pointers.
Stephen