From 4a55047ddeefd2fef5bc397acc65ad343d71150f Mon Sep 17 00:00:00 2001
From: Robin Kertels <robin.kertels@gmail.com>
Date: Fri, 26 May 2023 03:46:15 +0200
Subject: [PATCH] [d3d9] Forbid disabling SWVP on a pure SWVP device

---
 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 71136dbd0..e821e19d9 100644
--- a/src/d3d9/d3d9_device.cpp
+++ b/src/d3d9/d3d9_device.cpp
@@ -2463,6 +2463,9 @@ namespace dxvk {
     if (bSoftware && !CanSWVP())
       return D3DERR_INVALIDCALL;
 
+    if (!bSoftware && (m_behaviorFlags & D3DCREATE_SOFTWARE_VERTEXPROCESSING))
+      return D3DERR_INVALIDCALL;
+
     m_isSWVP = bSoftware;
 
     return D3D_OK;