From 76d5e4f40c08b9a06f36ebfe88aa19c6c635ea75 Mon Sep 17 00:00:00 2001
From: Ritik Anand <ritikgotbusy@gmail.com>
Date: Sun, 30 Nov 2025 21:38:56 +0530
Subject: [PATCH 1/2] Fix: WebGPUTextureUtils._getDefaultCubeTextureGPU using
 wrong cache (#32425)
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Co-authored-by: “SE7EN2028” <“RITIKGOTBUSY@GMAIL.COM”>
---
 src/renderers/webgpu/utils/WebGPUTextureUtils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/renderers/webgpu/utils/WebGPUTextureUtils.js b/src/renderers/webgpu/utils/WebGPUTextureUtils.js
index cde2d7a7eabbfd..60f38fed406e18 100644
--- a/src/renderers/webgpu/utils/WebGPUTextureUtils.js
+++ b/src/renderers/webgpu/utils/WebGPUTextureUtils.js
@@ -683,7 +683,7 @@ class WebGPUTextureUtils {
 	 */
 	_getDefaultCubeTextureGPU( format ) {
 
-		let defaultCubeTexture = this.defaultTexture[ format ];
+		let defaultCubeTexture = this.defaultCubeTexture[ format ];
 
 		if ( defaultCubeTexture === undefined ) {
 

From 6a8392415b9019be18c516b913ef6f2aa2af3a99 Mon Sep 17 00:00:00 2001
From: Michael Herzog <michael.herzog@human-interactive.org>
Date: Sun, 30 Nov 2025 17:10:46 +0100
Subject: [PATCH 2/2] SkinnedNode: Ensure `previousBoneMatrices` is defined for
 cloned skeletons. (#32422)

---
 src/nodes/accessors/SkinningNode.js | 15 ++++++++++++++-
 src/objects/Skeleton.js             |  9 +++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/nodes/accessors/SkinningNode.js b/src/nodes/accessors/SkinningNode.js
index 03824c52bf24c8..42ff7f54e7a2dd 100644
--- a/src/nodes/accessors/SkinningNode.js
+++ b/src/nodes/accessors/SkinningNode.js
@@ -282,7 +282,20 @@ class SkinningNode extends Node {
 
 		_frameId.set( skeleton, frame.frameId );
 
-		if ( this.previousBoneMatricesNode !== null ) skeleton.previousBoneMatrices.set( skeleton.boneMatrices );
+		if ( this.previousBoneMatricesNode !== null ) {
+
+			if ( skeleton.previousBoneMatrices === null ) {
+
+				// cloned skeletons miss "previousBoneMatrices" in their first updated
+
+				skeleton.previousBoneMatrices = new Float32Array( skeleton.boneMatrices );
+
+			}
+
+			skeleton.previousBoneMatrices.set( skeleton.boneMatrices );
+
+
+		}
 
 		skeleton.update();
 
diff --git a/src/objects/Skeleton.js b/src/objects/Skeleton.js
index 31384a9bcd40eb..5d1361086ae3c8 100644
--- a/src/objects/Skeleton.js
+++ b/src/objects/Skeleton.js
@@ -70,6 +70,15 @@ class Skeleton {
 		 */
 		this.boneMatrices = null;
 
+		/**
+		 * An array buffer holding the bone data of the previous frame.
+		 * Required for computing velocity. Maintained in {@link SkinningNode}.
+		 *
+		 * @type {?Float32Array}
+		 * @default null
+		 */
+		this.previousBoneMatrices = null;
+
 		/**
 		 * A texture holding the bone data for use
 		 * in the vertex shader.