From 6044db40f3b44886786f2f54dbac4f9a2808fae5 Mon Sep 17 00:00:00 2001
From: 9000h <3009073+9000h@users.noreply.github.com>
Date: Sat, 26 Oct 2019 23:03:35 +0200
Subject: [PATCH] Add glFinish() before unmapping the surface

cherry picked from rellla
https://github.com/rellla/softhddevice-openglosd/commit/22590848da82f0d33c816ed65261207b46cd6312
---
 openglosd.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/openglosd.cpp b/openglosd.cpp
index c69af55..27adcd3 100644
--- a/openglosd.cpp
+++ b/openglosd.cpp
@@ -616,6 +616,7 @@ void cOglFb::BindWrite(void) {
 }
 
 void cOglFb::Unbind(void) {
+    glFinish();
     glBindFramebuffer(GL_FRAMEBUFFER, 0);  
     glBindTexture(GL_TEXTURE_2D, 0);
 }