From 6490c2b86b7c56be6a1cd49f6d5f5bea639f8f59 Mon Sep 17 00:00:00 2001
From: Stenzek <stenzek@gmail.com>
Date: Fri, 9 Feb 2018 01:25:14 +1000
Subject: [PATCH] OGL: Use explicit flush instead of GL_SYNC_FLUSH_COMMANDS_BIT

---
 Source/Core/VideoBackends/OGL/OGLTexture.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Source/Core/VideoBackends/OGL/OGLTexture.cpp b/Source/Core/VideoBackends/OGL/OGLTexture.cpp
index 89b6436f2b..91c83762e1 100644
--- a/Source/Core/VideoBackends/OGL/OGLTexture.cpp
+++ b/Source/Core/VideoBackends/OGL/OGLTexture.cpp
@@ -417,6 +417,7 @@ void OGLStagingTexture::CopyFromTexture(const AbstractTexture* src,
 
     glMemoryBarrier(GL_CLIENT_MAPPED_BUFFER_BARRIER_BIT);
     m_fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+    glFlush();
   }
 
   m_needs_flush = true;
@@ -475,6 +476,7 @@ void OGLStagingTexture::CopyToTexture(const MathUtil::Rectangle<int>& src_rect,
       glDeleteSync(m_fence);
 
     m_fence = glFenceSync(GL_SYNC_GPU_COMMANDS_COMPLETE, 0);
+    glFlush();
   }
 
   m_needs_flush = true;
@@ -490,7 +492,7 @@ void OGLStagingTexture::Flush()
     return;
   }
 
-  glClientWaitSync(m_fence, GL_SYNC_FLUSH_COMMANDS_BIT, GL_TIMEOUT_IGNORED);
+  glClientWaitSync(m_fence, 0, GL_TIMEOUT_IGNORED);
   glDeleteSync(m_fence);
   m_fence = 0;
   m_needs_flush = false;