1 files changed, 63 insertions, 0 deletions
diff --git a/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.h b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.h
new file mode 100644
index 0000000000..f0fc70eb85
--- /dev/null
+++ b/gfx/angle/checkout/src/libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.h
@@ -0,0 +1,63 @@
+//
+// Copyright 2019 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// MappedSubresourceVerifier11.h: Defines the rx::MappedSubresourceVerifier11
+// class, a simple wrapper to D3D11 Texture2D mapped memory so that ASAN
+// MSAN can catch memory errors done with a pointer to the mapped texture
+// memory.
+
+#ifndef LIBANGLE_RENDERER_D3D_D3D11_MAPPED_SUBRESOURCE_VERIFIER11_H_
+#define LIBANGLE_RENDERER_D3D_D3D11_MAPPED_SUBRESOURCE_VERIFIER11_H_
+
+#include "common/MemoryBuffer.h"
+#include "common/angleutils.h"
+
+namespace rx
+{
+
+class MappedSubresourceVerifier11 final : angle::NonCopyable
+{
+  public:
+    MappedSubresourceVerifier11();
+    ~MappedSubresourceVerifier11();
+
+    void setDesc(const D3D11_TEXTURE2D_DESC &desc);
+    void setDesc(const D3D11_TEXTURE3D_DESC &desc);
+    void reset();
+
+    bool wrap(D3D11_MAP mapType, D3D11_MAPPED_SUBRESOURCE *map);
+    void unwrap();
+
+  private:
+#if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || defined(ANGLE_ENABLE_ASSERTS)
+    UINT D3D11_MAPPED_SUBRESOURCE::*mPitchType = nullptr;
+    size_t mPitchCount                         = 0;
+    angle::MemoryBuffer mWrapData;
+    uint8_t *mOrigData = nullptr;
+#endif
+};
+
+#if !(defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || defined(ANGLE_ENABLE_ASSERTS))
+
+inline MappedSubresourceVerifier11::MappedSubresourceVerifier11()  = default;
+inline MappedSubresourceVerifier11::~MappedSubresourceVerifier11() = default;
+
+inline void MappedSubresourceVerifier11::setDesc(const D3D11_TEXTURE2D_DESC &desc) {}
+inline void MappedSubresourceVerifier11::setDesc(const D3D11_TEXTURE3D_DESC &desc) {}
+inline void MappedSubresourceVerifier11::reset() {}
+
+inline bool MappedSubresourceVerifier11::wrap(D3D11_MAP mapType, D3D11_MAPPED_SUBRESOURCE *map)
+{
+    return true;
+}
+
+inline void MappedSubresourceVerifier11::unwrap() {}
+
+#endif
+
+}  // namespace rx
+
+#endif  // LIBANGLE_RENDERER_D3D_D3D11_MAPPED_SUBRESOURCE_VERIFIER11_H_