From 76442c870e2f8cf3b6f88a5b530f6254de5336e0 Mon Sep 17 00:00:00 2001
From: Magic Crazy Man <350088648@qq.com>
Date: Tue, 28 Jul 2026 17:46:07 +0800
Subject: [PATCH] fix: ensure mapped range is dropped before unmapping buffer
 in capture (#8337)

After upgrading to wgpu v30, it requires to drop the `BufferView` return
by `get_mapped_range` before unmap the buffer. Fix it in this pr, making
screenshot event crash no more
---
 crates/egui-wgpu/src/capture.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/crates/egui-wgpu/src/capture.rs b/crates/egui-wgpu/src/capture.rs
index 193cb4cce..c5519e8a6 100644
--- a/crates/egui-wgpu/src/capture.rs
+++ b/crates/egui-wgpu/src/capture.rs
@@ -230,6 +230,7 @@ impl CaptureState {
                     ));
                 }
             }
+            drop(mapped_range);
             buffer.unmap();
 
             tx.send((