chore(gltf-material-parser): add cleanup method (#1633)

modules/experimental/src/gltf/gltf-material-parser.ts

@@ -1,4 +1,6 @@
-import {Device, log} from '@luma.gl/api';
+import type {Device, Texture} from '@luma.gl/api';
+import {log} from '@luma.gl/api';
+
 import GL from '@luma.gl/constants';
 import GLTFEnvironment from './gltf-environment';
 
@@ -16,7 +18,7 @@ export default class GLTFMaterialParser {
   readonly defines: Record<string, number | boolean>;
   readonly uniforms: Record<string, any>;
   readonly parameters: Record<string, any>;
-  readonly generatedTextures: object[];
+  readonly generatedTextures: Texture[];
 
   constructor(device: Device, props: GLTFMaterialParserProps) {
     const {attributes, material, pbrDebug, imageBasedLightingEnvironment, lights, useTangents} = props;
@@ -96,7 +98,7 @@ export default class GLTFMaterialParser {
       textureOptions = {data: image};
     }
 
-    const texture = this.device.createTexture({
+    const texture: Texture = this.device.createTexture({
       id: gltfTexture.name || gltfTexture.id,
       parameters: {
         ...parameters,
@@ -173,4 +175,11 @@ export default class GLTFMaterialParser {
       });
     }
   }
+
+  /**
+   * Destroy all generated resources to release memory.
+   */
+  delete(): void {
+    this.generatedTextures.forEach(texture => texture.destroy());
+  }
 }