overte-HifiExperiments/script-archive/shaders/exampleUserDataV2.json

    {
        "ProceduralEntity": {
            "shaderUrl": "file:///C:/Users/bdavis/Git/hifi/examples/shaders/exampleV2.fs",
            // V2 and onwards, shaders must include a version identifier, or they will default
            // to V1 behavior
            "version": 2,
            // Any values specified here will be passed on to uniforms with matching names in
            // the shader. Only numbers and arrays of length 1-4 of numbers are supported.
            //
            // The size of the data must match the size of the uniform:
            //      a number or 1 value array = 'uniform float'
            //      2 value array = 'uniform vec2'
            //      3 value array = 'uniform vec3'
            //      4 value array = 'uniform vec4'
            //
            // Uniforms should always be declared in the shader with a default value
            // or failure to specify the value here will result in undefined behavior.
            "uniforms": {
                // uniform float iSpeed = 1.0;
                "iSpeed": 2.0,
                // uniform vec3 iSize = vec3(1.0);
                "iSize": [1.0, 2.0, 4.0]
            }
        }
    }