From 9c8a2b960972b56e2df6323dc221667a966e796f Mon Sep 17 00:00:00 2001
From: Oliver James <oli@juce.com>
Date: Mon, 10 Feb 2025 10:31:51 +0000
Subject: [PATCH] OpenGL (Windows): Only trigger async update after first
 buffer swap

This fixes an issue where OpenGL would continuously repaint on Windows.
---
 modules/juce_opengl/native/juce_OpenGL_windows.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/juce_opengl/native/juce_OpenGL_windows.h b/modules/juce_opengl/native/juce_OpenGL_windows.h
index 47faf717d2..194544d3df 100644
--- a/modules/juce_opengl/native/juce_OpenGL_windows.h
+++ b/modules/juce_opengl/native/juce_OpenGL_windows.h
@@ -142,7 +142,9 @@ public:
     void swapBuffers() noexcept
     {
         SwapBuffers (dc.get());
-        triggerAsyncUpdate();
+
+        if (! std::exchange (haveBuffersBeenSwapped, true))
+            triggerAsyncUpdate();
     }
 
     bool setSwapInterval (int numFramesPerSwap)
@@ -425,6 +427,7 @@ private:
     OpenGLContext* context = nullptr;
     void* sharedContext = nullptr;
     double nativeScaleFactor = 1.0;
+    bool haveBuffersBeenSwapped = false;
 
     //==============================================================================
     JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (NativeContext)