From df453dab89d8a10ec22f835f14b5906f05081bd5 Mon Sep 17 00:00:00 2001
From: Powei Feng <powei@google.com>
Date: Wed, 29 Oct 2025 17:27:38 +0000
Subject: [PATCH] webgpu: fix index buffer handle allocation (#9379)

Handle allocation was using HwIndexBuffer, which is much smaller
than WebGPUIndexBuffer. This can lead to memory corruption.
---
 filament/backend/src/webgpu/WebGPUDriver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/filament/backend/src/webgpu/WebGPUDriver.cpp b/filament/backend/src/webgpu/WebGPUDriver.cpp
index 796ece2f9f..3724c4a347 100644
--- a/filament/backend/src/webgpu/WebGPUDriver.cpp
+++ b/filament/backend/src/webgpu/WebGPUDriver.cpp
@@ -339,7 +339,7 @@ Handle<HwTimerQuery> WebGPUDriver::createTimerQueryS() noexcept {
 }
 
 Handle<HwIndexBuffer> WebGPUDriver::createIndexBufferS() noexcept {
-    return allocHandle<HwIndexBuffer>();
+    return allocHandle<WebGPUIndexBuffer>();
 }
 
 Handle<HwTexture> WebGPUDriver::createTextureViewS() noexcept {