Function getGLViewport

docs/app/js/sanddance-app.js:81667–81678

(gl, _ref3)

    return resolveLayerIndex1;
}
function getGLViewport(gl, _ref3) {
    var viewport = _ref3.viewport;
    var height = gl.canvas ? gl.canvas.clientHeight || gl.canvas.height : 100;
    var dimensions = viewport;
    var pixelRatio = (0, _core.cssToDeviceRatio)(gl);
    return [
        dimensions.x * pixelRatio,
        (height - dimensions.y - dimensions.height) * pixelRatio,
        dimensions.width * pixelRatio,
        dimensions.height * pixelRatio
    ];
}
function clearGLCanvas(gl) {
    var width = gl.drawingBufferWidth;
    var height = gl.drawingBufferHeight;