From 288a9dd547cfa80a203a1fd5865d42c10abdc445 Mon Sep 17 00:00:00 2001
From: Joshua Ashton <joshua@froggi.es>
Date: Wed, 18 Dec 2019 22:48:15 +0000
Subject: [PATCH] [d3d9] Avoid rebinding viewports if the same one is re-set

---
 src/d3d9/d3d9_device.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/d3d9/d3d9_device.cpp b/src/d3d9/d3d9_device.cpp
index 93ec575b8..ed38713d4 100644
--- a/src/d3d9/d3d9_device.cpp
+++ b/src/d3d9/d3d9_device.cpp
@@ -1477,6 +1477,9 @@ namespace dxvk {
     if (unlikely(ShouldRecord()))
       return m_recorder->SetViewport(&viewport);
 
+    if (m_state.viewport == viewport)
+      return D3D_OK;
+
     m_state.viewport = viewport;
 
     m_flags.set(D3D9DeviceFlag::DirtyViewportScissor);