Function LayerWebGLRenderer

src/gameobjects/layer/LayerWebGLRenderer.js:26–110

(renderer, layer, drawingContext, parentMatrix, renderStep, displayList, displayListIndex)

 * @param {number} displayListIndex - The index of the Game Object within the display list.
 */
var LayerWebGLRenderer = function (renderer, layer, drawingContext, parentMatrix, renderStep, displayList, displayListIndex)
{
    var children = layer.list;
    var childCount = children.length;

    if (childCount === 0)
    {
        return;
    }

    var currentContext = drawingContext;
    var camera = currentContext.camera;

    layer.depthSort();

    var layerHasBlendMode = (layer.blendMode !== CONST.BlendModes.SKIP_CHECK);

    if (!layerHasBlendMode && currentContext.blendMode !== 0)
    {
        //  If Layer is SKIP_TEST then set blend mode to be Normal
        currentContext = currentContext.getClone();
        currentContext.setBlendMode(0);
        currentContext.use();
    }

    var alpha = layer.alpha;

    for (var i = 0; i < childCount; i++)
    {
        var child = children[i];

        if (!child.willRender(camera))
        {
            continue;
        }

        var childAlphaTopLeft;
        var childAlphaTopRight;
        var childAlphaBottomLeft;
        var childAlphaBottomRight;

        if (child.alphaTopLeft !== undefined)
        {
            childAlphaTopLeft = child.alphaTopLeft;
            childAlphaTopRight = child.alphaTopRight;
            childAlphaBottomLeft = child.alphaBottomLeft;
            childAlphaBottomRight = child.alphaBottomRight;
        }
        else
        {
            var childAlpha = child.alpha;

            childAlphaTopLeft = childAlpha;
            childAlphaTopRight = childAlpha;
            childAlphaBottomLeft = childAlpha;
            childAlphaBottomRight = childAlpha;
        }