createScene.js

/*global define*/
define([
        'Core/Cartesian2',
        'Core/clone',
        'Core/defaultValue',
        'Core/defined',
        'Core/queryToObject',
        'Scene/Scene',
        'Specs/createCanvas',
        'Specs/destroyCanvas'
    ], function(
        Cartesian2,
        clone,
        defaultValue,
        defined,
        queryToObject,
        Scene,
        createCanvas,
        destroyCanvas) {
    'use strict';

    function createScene(options) {
        options = defaultValue(options, {});

        // save the canvas so we don't try to clone an HTMLCanvasElement
        var canvas = defined(options.canvas) ? options.canvas : createCanvas();
        options.canvas = undefined;

        options = clone(options, true);

        options.canvas = canvas;
        options.contextOptions = defaultValue(options.contextOptions, {});

        var contextOptions = options.contextOptions;
        contextOptions.webgl = defaultValue(contextOptions.webgl, {});
        contextOptions.webgl.antialias = defaultValue(contextOptions.webgl.antialias, false);

        var scene = new Scene(options);

        if (window.webglValidation) {
            var context = scene.context;
            context.validateShaderProgram = true;
            context.validateFramebuffer = true;
            context.logShaderCompilation = true;
            context.throwOnWebGLError = true;
        }

        // Add functions for test
        scene.destroyForSpecs = function() {
            var canvas = scene.canvas;
            scene.destroy();
            destroyCanvas(canvas);
        };

        scene.renderForSpecs = function(time) {
            scene.initializeFrame();
            scene.render(time);
            return scene.context.readPixels();
        };

        scene.pickForSpecs = function() {
            return scene.pick(new Cartesian2(0, 0));
        };

        scene.rethrowRenderErrors = defaultValue(options.rethrowRenderErrors, true);

        return scene;
    }

    return createScene;
});