WebGPURenderer: BatchMesh support for Instanced rendering (#1074)

Author: Methuselah96

types/three/examples/jsm/nodes/Nodes.d.ts

@@ -8,7 +8,7 @@ export { bypass, default as BypassNode } from "./core/BypassNode.js";
 export { cache, default as CacheNode } from "./core/CacheNode.js";
 export { default as ConstNode } from "./core/ConstNode.js";
 export { context, default as ContextNode, label } from "./core/ContextNode.js";
-export { default as IndexNode, IndexNodeScope, instanceIndex, vertexIndex } from "./core/IndexNode.js";
+export { default as IndexNode, drawIndex, IndexNodeScope, instanceIndex, vertexIndex } from "./core/IndexNode.js";
 export {
     default as LightingModel,
     LightingModelDirectInput,

types/three/examples/jsm/nodes/core/IndexNode.d.ts

@@ -1,7 +1,7 @@
 import { ShaderNodeObject } from "../shadernode/ShaderNode.js";
 import Node from "./Node.js";
 
-export type IndexNodeScope = typeof IndexNode.VERTEX | typeof IndexNode.INSTANCE;
+export type IndexNodeScope = typeof IndexNode.VERTEX | typeof IndexNode.INSTANCE | typeof IndexNode.DRAW;
 
 export default class IndexNode extends Node {
     scope: IndexNodeScope;
@@ -12,7 +12,9 @@ export default class IndexNode extends Node {
 
     static VERTEX: "vertex";
     static INSTANCE: "instance";
+    static DRAW: "draw";
 }
 
 export const vertexIndex: ShaderNodeObject<IndexNode>;
 export const instanceIndex: ShaderNodeObject<IndexNode>;
+export const drawIndex: ShaderNodeObject<IndexNode>;

types/three/examples/jsm/nodes/core/NodeBuilder.d.ts

@@ -73,6 +73,8 @@ export default abstract class NodeBuilder {
 
     abstract getInstanceIndex(): string;
 
+    abstract getDrawIndex(): string | null;
+
     abstract getFrontFacing(): string;
 
     abstract getFragCoord(): string;