From 64f9697562f597e23d9cbcb2670e891ec8448ee4 Mon Sep 17 00:00:00 2001
From: vinsentli <vinsentli@tencent.com>
Date: Sun, 5 Jan 2025 12:30:03 +0800
Subject: [PATCH] NanovgSessoin : implement teardown()

---
 shell/renderSessions/NanovgSession.cpp | 6 ++++++
 shell/renderSessions/NanovgSession.h   | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/shell/renderSessions/NanovgSession.cpp b/shell/renderSessions/NanovgSession.cpp
index d94619938d..b5d75017d3 100644
--- a/shell/renderSessions/NanovgSession.cpp
+++ b/shell/renderSessions/NanovgSession.cpp
@@ -183,4 +183,10 @@ void NanovgSession::drawNanovg(float framebuffferWidth,
   updateGraph(&cpuGraph_, (end - start));
 }
 
+void NanovgSession::teardown() noexcept {
+  if (nvgContext_) {
+    iglu::nanovg::DestroyContext(nvgContext_);
+  }
+}
+
 } // namespace igl::shell
diff --git a/shell/renderSessions/NanovgSession.h b/shell/renderSessions/NanovgSession.h
index 023e340954..70db262486 100644
--- a/shell/renderSessions/NanovgSession.h
+++ b/shell/renderSessions/NanovgSession.h
@@ -52,10 +52,10 @@ class TouchListener : public ITouchListener {
 
 class NanovgSession : public RenderSession {
  public:
-  explicit NanovgSession(std::shared_ptr<Platform> platform) : RenderSession(std::move(platform)) {
-  }
+  explicit NanovgSession(std::shared_ptr<Platform> platform) : RenderSession(std::move(platform)) {}
   void initialize() noexcept override;
   void update(igl::SurfaceTextures surfaceTextures) noexcept override;
+  void teardown() noexcept override;
 
  private:
   void drawNanovg(float framebuffferWidth,