From 94786b3e8fb5c4231b550a84970e5b767d0d1429 Mon Sep 17 00:00:00 2001
From: "Steve J. Cai" <steve@postel3d.com>
Date: Mon, 25 Sep 2023 06:04:15 +0000
Subject: [PATCH] Allow preserveDrawingBuffer

---
 Graphics/GraphicsEngineOpenGL/src/GLContextEmscripten.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Graphics/GraphicsEngineOpenGL/src/GLContextEmscripten.cpp b/Graphics/GraphicsEngineOpenGL/src/GLContextEmscripten.cpp
index fa5edb610e..0d7556fb5f 100644
--- a/Graphics/GraphicsEngineOpenGL/src/GLContextEmscripten.cpp
+++ b/Graphics/GraphicsEngineOpenGL/src/GLContextEmscripten.cpp
@@ -44,6 +44,7 @@ GLContext::GLContext(const EngineGLCreateInfo& InitAttribs, RENDER_DEVICE_TYPE&
         ContextAttributes.depth        = true;
         ContextAttributes.majorVersion = 3;
         ContextAttributes.minorVersion = 0;
+        ContextAttributes.preserveDrawingBuffer = true;
 
         m_GLContext = emscripten_webgl_create_context(InitAttribs.Window.pCanvasId, &ContextAttributes);
         if (m_GLContext == 0)