Source codes

1 files changed, 33 insertions, 0 deletions

diff --git a/Whisper/D3D/MappedResource.cpp b/Whisper/D3D/MappedResource.cpp
new file mode 100644
index 0000000..d6e8119
--- /dev/null
+++ b/Whisper/D3D/MappedResource.cpp
@@ -0,0 +1,33 @@
+#include "stdafx.h"
+#include "MappedResource.h"
+using namespace DirectCompute;
+#define CHECK( hr ) { const HRESULT __hr = ( hr ); if( FAILED( __hr ) ) return __hr; }
+
+MappedResource::MappedResource()
+{
+	mapped.pData = nullptr;
+	mapped.RowPitch = mapped.DepthPitch = 0;
+	resource = nullptr;
+}
+
+HRESULT MappedResource::map( ID3D11Resource* res, bool reading )
+{
+	if( nullptr == resource )
+	{
+		D3D11_MAP mt = reading ? D3D11_MAP_READ : D3D11_MAP_WRITE_DISCARD;
+		CHECK( context()->Map( res, 0, mt, 0, &mapped ) );
+		resource = res;
+		return S_OK;
+	}
+	return HRESULT_FROM_WIN32( ERROR_ALREADY_INITIALIZED );
+}
+
+MappedResource::~MappedResource()
+{
+	if( nullptr != resource )
+	{
+		context()->Unmap( resource, 0 );
+		resource = nullptr;
+		mapped.pData = nullptr;
+	}
+}
\ No newline at end of file