WebGPURenderer: copyTextureToTexture subframe upload and new API (#959)

* WebGPURenderer: copyTextureToTexture subframe upload and new API

* Format

* Update three.js

* Add examples

* Update patch

* Delete examples

Author: Methuselah96

examples-testing/changes.patch

@@ -13679,7 +13679,7 @@ index ca0ae9e7..2125232e 100644
      const windowHalfY = window.innerHeight / 2;
 
 diff --git a/examples-testing/examples/webgpu_materials_texture_partialupdate.ts b/examples-testing/examples/webgpu_materials_texture_partialupdate.ts
-index 3fb91ed9..67f2f7bf 100644
+index b25b4234..8f3d457b 100644
 --- a/examples-testing/examples/webgpu_materials_texture_partialupdate.ts
 +++ b/examples-testing/examples/webgpu_materials_texture_partialupdate.ts
 @@ -1,7 +1,12 @@
@@ -13696,7 +13696,12 @@ index 3fb91ed9..67f2f7bf 100644
 
  let last = 0;
  const position = new THREE.Vector2();
-@@ -79,7 +84,7 @@ async function animate() {
+@@ -75,11 +80,11 @@ async function animate() {
+ 
+         // perform copy from src to dest texture to a random position
+ 
+-        renderer.copyTextureToTexture(dataTexture, diffuseMap, new THREE.Vector2(), position);
++        renderer.copyTextureToTexture(dataTexture, diffuseMap, null, position);
      }
  }
 

three.js

@@ -1,4 +1,5 @@
 import {
+    Box2,
     BufferGeometry,
     Camera,
     Color,
@@ -271,7 +272,13 @@ export default class Renderer {
 
     copyFramebufferToTexture(framebufferTexture: FramebufferTexture): void;
 
-    copyTextureToTexture(position: Vector2, srcTexture: Texture, dstTexture: Texture, level?: number): void;
+    copyTextureToTexture(
+        srcTexture: Texture,
+        dstTexture: Texture,
+        srcRegion?: Box2 | null,
+        dstPosition?: Vector2 | null,
+        level?: number,
+    ): void;
 
     readRenderTargetPixelsAsync(
         renderTarget: RenderTarget,