From c56d09a2e506a953852986956c20bd5cfc8d959c Mon Sep 17 00:00:00 2001
From: Konkitoman <konkitoman@users.noreply.github.com>
Date: Thu, 27 Jul 2023 18:22:43 +0300
Subject: [PATCH] Fix WGPU implementation memory leak Now unused surfaces will
 be cleared

---
 crates/eframe/src/native/run.rs | 1 +
 crates/egui-wgpu/src/winit.rs   | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/crates/eframe/src/native/run.rs b/crates/eframe/src/native/run.rs
index 70d542d13..f2fff410b 100644
--- a/crates/eframe/src/native/run.rs
+++ b/crates/eframe/src/native/run.rs
@@ -1909,6 +1909,7 @@ mod wgpu_integration {
 
                 windows.retain(|id, _| active_viewports_ids.contains(id));
                 windows_id.retain(|_, id| active_viewports_ids.contains(id));
+                painter.clean_surfaces(active_viewports_ids);
 
                 let mut control_flow = vec![EventResult::Wait];
                 for repaint_after in repaint_after {
diff --git a/crates/egui-wgpu/src/winit.rs b/crates/egui-wgpu/src/winit.rs
index a41fdf4c7..00b2a6bf0 100644
--- a/crates/egui-wgpu/src/winit.rs
+++ b/crates/egui-wgpu/src/winit.rs
@@ -615,6 +615,11 @@ impl Painter {
         screenshot
     }
 
+    pub fn clean_surfaces(&mut self, avalibile_viewports: Vec<u64>) {
+        self.surfaces
+            .retain(|id, _| avalibile_viewports.contains(id))
+    }
+
     #[allow(clippy::unused_self)]
     pub fn destroy(&mut self) {
         // TODO(emilk): something here?