Function createProgram

utils/anime4k.js:15–45

(gl, vertexSource, fragmentSource)

}

function createProgram(gl, vertexSource, fragmentSource) {
    var program = gl.createProgram();

    var vertexShader = createShader(gl, gl.VERTEX_SHADER, vertexSource);
    var fragmentShader = createShader(gl, gl.FRAGMENT_SHADER, fragmentSource);

    gl.attachShader(program, vertexShader);
    gl.attachShader(program, fragmentShader);

    gl.linkProgram(program);
    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
        throw new Error(gl.getProgramInfoLog(program));
    }

    var wrapper = {
        program: program
    };

    var numAttributes = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
    for (var i = 0; i < numAttributes; i++) {
        var attribute = gl.getActiveAttrib(program, i);
        wrapper[attribute.name] = gl.getAttribLocation(program, attribute.name);
    }
    var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
    for (var i$1 = 0; i$1 < numUniforms; i$1++) {
        var uniform = gl.getActiveUniform(program, i$1);
        wrapper[uniform.name] = gl.getUniformLocation(program, uniform.name);
    }

    return wrapper;
}

function createTexture(gl, filter, data, width, height) {
    var texture = gl.createTexture();