From 1cc531eaf8002cef3e9707cdc3398f45909e38d2 Mon Sep 17 00:00:00 2001
From: Philip Rebohle <philip.rebohle@tu-dortmund.de>
Date: Fri, 5 Jul 2019 10:25:06 +0200
Subject: [PATCH] [d3d11] Return error when mapping an already mapped image

Final Fantasy XIV does this. Should avoid some unnecessary work.
---
 src/d3d11/d3d11_context_imm.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/d3d11/d3d11_context_imm.cpp b/src/d3d11/d3d11_context_imm.cpp
index d164f4c03..461dad65b 100644
--- a/src/d3d11/d3d11_context_imm.cpp
+++ b/src/d3d11/d3d11_context_imm.cpp
@@ -334,6 +334,9 @@ namespace dxvk {
     if (unlikely(Subresource >= pResource->CountSubresources()))
       return E_INVALIDARG;
 
+    if (unlikely(pResource->GetMapType(Subresource) != D3D11_MAP(~0u)))
+      return E_OUTOFMEMORY;
+
     pResource->SetMapType(Subresource, MapType);
 
     VkFormat packedFormat = m_parent->LookupPackedFormat(