Class Material

script.js:351–382

}

class Material {
    constructor (vertexShader, fragmentShaderSource) {
        this.vertexShader = vertexShader;
        this.fragmentShaderSource = fragmentShaderSource;
        this.programs = [];
        this.activeProgram = null;
        this.uniforms = [];
    }

    setKeywords (keywords) {
        let hash = 0;
        for (let i = 0; i < keywords.length; i++)
            hash += hashCode(keywords[i]);

        let program = this.programs[hash];
        if (program == null)
        {
            let fragmentShader = compileShader(gl.FRAGMENT_SHADER, this.fragmentShaderSource, keywords);
            program = createProgram(this.vertexShader, fragmentShader);
            this.programs[hash] = program;
        }

        if (program == this.activeProgram) return;

        this.uniforms = getUniforms(program);
        this.activeProgram = program;
    }

    bind () {
        gl.useProgram(this.activeProgram);
    }
}

class Program {
    constructor (vertexShader, fragmentShader) {