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GUI Performance


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I am trying to use the GUI TextBlock and Image components to display an icon and a text underneath it (number count) on top of a hexagon.

In the scene, there can be hundreds of hexagons at once. Without instantiating the GUI components, the scene runs with no much problem at all, 200~ hexagons at 60fps... With it, the fps drops considerably.

Is there any GUI optimization advice you guys can give me? I would appreciate it. :)

constructor(parentHex, text, sizeScale, icon) {
if (global.Image) {
const GUI = require('babylonjs-gui');
const name = `hex_label_plane_${sizeScale}`;
let plane = Main.scene.getMeshByName(name);
if (!plane) {
plane = BABYLON.MeshBuilder.CreatePlane(name, { size: 1.1 * sizeScale }, Main.scene);
Util.setMaterial(plane, materialType);
plane = plane.clone('clone');
plane.position = Util.getNewVector(parentHex.position);
plane.position.y += (parentHex.extents.y * Config.HEX_Y_SCALE) + 0.01;
plane.rotation.x = Math.PI / 2;
plane.originalScaling = Util.getNewVector(plane.scaling);
plane.setVisibility = (visible) => {
visible ? Util.setScalingToZero(plane) : Util.resetScaling(plane);
const panel = new GUI.StackPanel();
panel.verticalAlignment = GUI.Control.VERTICAL_ALIGNMENT_CENTER;
this._panel = panel;
if (icon) {
const image = new GUI.Image('hexLabelIcon', icon);
image.height = `${Config.HEX_LABEL_ICON_HEIGHT / sizeScale}px`;
image.paddingBottom = `${Config.HEX_LABEL_ICON_PADDING_BOTTOM / sizeScale}px`;
image.verticalAlignment = GUI.Control.VERTICAL_ALIGNMENT_BOTTOM;
image.stretch = GUI.Image.STRETCH_UNIFORM;
const textBlock = new GUI.TextBlock(`hex_label_${text}`, text);
textBlock.height = `${Config.HEX_LABEL_FONT_SIZE / sizeScale}px`;
textBlock.color = 'black';
textBlock.fontSize = `${Config.HEX_LABEL_FONT_SIZE / sizeScale}px`;
textBlock.textVerticalAlignment = GUI.Control.VERTICAL_ALIGNMENT_TOP;
this.advancedTexture = GUI.AdvancedDynamicTexture.CreateForMesh(plane);
return plane;

Screen Shot 2017-12-21 at 11.01.14 PM.png

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