From 4ea226b74334f6d474efdefb6adacf52bc3f77fc Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Tue, 26 Jun 2018 14:09:47 +0200
Subject: [PATCH] check for errors in render loop

---
 src/render.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/render.c b/src/render.c
index 8b122d8..6acf8b3 100644
--- a/src/render.c
+++ b/src/render.c
@@ -499,6 +499,16 @@ DWORD WINAPI render_main(void)
                 }
 
             }
+
+            static int errorCheckCount = 0;
+            if (ddraw->autorenderer && errorCheckCount < 3)
+            {
+                errorCheckCount++;
+                glFinish();
+
+                if (glGetError() != GL_NO_ERROR)
+                    useOpenGL = FALSE;
+            }
         }
 
         LeaveCriticalSection(&ddraw->cs);