Re-add overlay

Author: gkjohnson

src/three/plugins/images/GeneratedSurfacePlugin.js

@@ -93,6 +93,7 @@ export class GeneratedSurfacePlugin {
 
 		}
 
+		const { overlay } = this;
 		let res;
 		if ( this._useEllipsoid() ) {
 
@@ -104,6 +105,37 @@ export class GeneratedSurfacePlugin {
 
 		}
 
+		if ( overlay ) {
+
+			const x = tile[ TILE_X ];
+			const y = tile[ TILE_Y ];
+			const level = tile[ TILE_LEVEL ];
+			const range = this._tiling.getTileBounds( x, y, level, true, false );
+
+			if ( overlay.hasContent( range, level ) ) {
+
+				await overlay.lockTexture( range, level );
+
+				const texture = overlay.getTexture( range, level );
+				tile.overlayRange = range;
+				tile.overlayLevel = level;
+
+				if ( abortSignal.aborted ) {
+
+					overlay.releaseTexture( range, level );
+					tile.overlayRange = null;
+					tile.overlayLevel = null;
+					return null;
+
+				}
+
+				res.material.map = texture;
+				res.material.needsUpdate = true;
+
+			}
+
+		}
+
 		return res;
 
 	}
@@ -121,6 +153,19 @@ export class GeneratedSurfacePlugin {
 
 	}
 
+	disposeTile( tile ) {
+
+		const { overlayRange, overlayLevel } = tile;
+		if ( this.overlay && overlayRange ) {
+
+			this.overlay.releaseTexture( overlayRange, overlayLevel );
+			tile.overlayRange = null;
+			tile.overlayLevel = null;
+
+		}
+
+	}
+
 	/**
 	 * Returns the cartographic coordinates for a given world-space position. "lat" and "lon" are assigned
 	 * to the target object.