From df7067aedbba2558f15ada4c338483ed861bb1d2 Mon Sep 17 00:00:00 2001
From: Iwo Plaza <iwoplaza@gmail.com>
Date: Wed, 29 Jul 2026 10:45:13 +0200
Subject: [PATCH] fix: Lazy buffer views in bitcast to allow for polyfill

---
 packages/typegpu/src/std/bitcast.ts | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/packages/typegpu/src/std/bitcast.ts b/packages/typegpu/src/std/bitcast.ts
index 755ee9ee54..aa42d7defb 100644
--- a/packages/typegpu/src/std/bitcast.ts
+++ b/packages/typegpu/src/std/bitcast.ts
@@ -201,11 +201,25 @@ const bitcastAllowedSchemas = [
 type BitcastAllowedTypes = (typeof bitcastAllowedSchemas)[number];
 
 const buffer = new ArrayBuffer(16);
+const bufViewCache = {
+  f32: undefined as Float32Array | undefined,
+  u32: undefined as Uint32Array | undefined,
+  i32: undefined as Int32Array | undefined,
+  f16: undefined as Float16Array | undefined,
+};
 const bufViews = {
-  f32: new Float32Array(buffer),
-  u32: new Uint32Array(buffer),
-  i32: new Int32Array(buffer),
-  f16: new Float16Array(buffer),
+  get f32() {
+    return (bufViewCache['f32'] ??= new Float32Array(buffer));
+  },
+  get u32() {
+    return (bufViewCache['u32'] ??= new Uint32Array(buffer));
+  },
+  get i32() {
+    return (bufViewCache['i32'] ??= new Int32Array(buffer));
+  },
+  get f16() {
+    return (bufViewCache['f16'] ??= new Float16Array(buffer));
+  },
 };
 
 function writeToBuffer(