From f94ff7db4fe46881630af4b09b85ded842180516 Mon Sep 17 00:00:00 2001
From: Mikhail Paulyshka <me@mixaill.tk>
Date: Mon, 12 Mar 2018 01:54:03 +0300
Subject: [PATCH] [d3d11] add check for pResource against nullptr in
 D3D11ImmediateContext::Map()

---
 src/d3d11/d3d11_context_imm.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/d3d11/d3d11_context_imm.cpp b/src/d3d11/d3d11_context_imm.cpp
index 1ba812f1e..1245fe074 100644
--- a/src/d3d11/d3d11_context_imm.cpp
+++ b/src/d3d11/d3d11_context_imm.cpp
@@ -89,6 +89,11 @@ namespace dxvk {
           D3D11_MAP                   MapType,
           UINT                        MapFlags,
           D3D11_MAPPED_SUBRESOURCE*   pMappedResource) {
+    if (pResource == nullptr) {
+      Logger::warn("D3D11ImmediateContext::Map() application tried to map a nullptr resource");
+      return DXGI_ERROR_INVALID_CALL;
+    }
+
     D3D11_RESOURCE_DIMENSION resourceDim = D3D11_RESOURCE_DIMENSION_UNKNOWN;
     pResource->GetType(&resourceDim);