diff --git a/RenderSystems/Direct3D11/src/OgreD3D11HLSLProgram.cpp b/RenderSystems/Direct3D11/src/OgreD3D11HLSLProgram.cpp
index 9151805dfb..828cad4df7 100644
--- a/RenderSystems/Direct3D11/src/OgreD3D11HLSLProgram.cpp
+++ b/RenderSystems/Direct3D11/src/OgreD3D11HLSLProgram.cpp
@@ -848,7 +848,7 @@ namespace Ogre
                 GET_SIZE_OF_NAMES( memberTypeNameSize, mMemberTypeName, Name );
 
                 // clang-format off
-                int sizeOfData =   sizeof(uint32) +  mMicroCode.size()
+                size_t sizeOfData = sizeof(uint32) +  mMicroCode.size()
                                  + sizeof(uint32) // mConstantBufferSize
                                  + sizeof(uint32) // mConstantBufferNr
                                  + sizeof(uint32) // mNumSlots
@@ -973,7 +973,7 @@ namespace Ogre
 
                 // create microcode
                 GpuProgramManager::Microcode newMicrocode =
-                    GpuProgramManager::getSingleton().createMicrocode( sizeOfData );
+                    GpuProgramManager::getSingleton().createMicrocode( (uint32)sizeOfData );
 
 #    define WRITE_START( curlist, memberType ) \
         { \
diff --git a/RenderSystems/Direct3D11/src/Windowing/WIN32/OgreD3D11WindowWinRT.cpp b/RenderSystems/Direct3D11/src/Windowing/WIN32/OgreD3D11WindowWinRT.cpp
index 3fb39a468b..461d9a1dda 100644
--- a/RenderSystems/Direct3D11/src/Windowing/WIN32/OgreD3D11WindowWinRT.cpp
+++ b/RenderSystems/Direct3D11/src/Windowing/WIN32/OgreD3D11WindowWinRT.cpp
@@ -86,8 +86,8 @@ namespace Ogre
         Windows::Foundation::Rect rc = mCoreWindow->Bounds;
         mLeft = (int)floorf( rc.X * scale + 0.5f );
         mTop = (int)floorf( rc.Y * scale + 0.5f );
-        mRequestedWidth = rc.Width;
-        mRequestedHeight = rc.Height;
+        mRequestedWidth = (int)floorf( rc.Width + 0.5f );
+        mRequestedHeight = (int)floorf( rc.Height + 0.5f );
     }
     //-----------------------------------------------------------------------------------
     D3D11WindowCoreWindow::~D3D11WindowCoreWindow() { destroy(); }
@@ -176,8 +176,8 @@ namespace Ogre
         Windows::Foundation::Rect rc = mCoreWindow->Bounds;
         mLeft = (int)floorf( rc.X * scale + 0.5f );
         mTop = (int)floorf( rc.Y * scale + 0.5f );
-        mRequestedWidth = rc.Width;
-        mRequestedHeight = rc.Height;
+        mRequestedWidth = (int)floorf( rc.Width + 0.5f );
+        mRequestedHeight = (int)floorf( rc.Height + 0.5f );
 
         resizeSwapChainBuffers( 0, 0 );  // pass zero to autodetect size
     }
@@ -245,8 +245,8 @@ namespace Ogre
                                        static_cast<float>( mSwapChainPanel->ActualHeight ) );
         mCompositionScale = Windows::Foundation::Size( mSwapChainPanel->CompositionScaleX,
                                                        mSwapChainPanel->CompositionScaleY );
-        mRequestedWidth = sz.Width;
-        mRequestedHeight = sz.Height;
+        mRequestedWidth = (int)floorf( sz.Width + 0.5f );
+        mRequestedHeight = (int)floorf( sz.Height + 0.5f );
     }
     //-----------------------------------------------------------------------------------
     D3D11WindowSwapChainPanel::~D3D11WindowSwapChainPanel() { destroy(); }
@@ -363,8 +363,8 @@ namespace Ogre
                                        static_cast<float>( mSwapChainPanel->ActualHeight ) );
         mCompositionScale = Windows::Foundation::Size( mSwapChainPanel->CompositionScaleX,
                                                        mSwapChainPanel->CompositionScaleY );
-        mRequestedWidth = sz.Width;
-        mRequestedHeight = sz.Height;
+        mRequestedWidth = (int)floorf( sz.Width + 0.5f );
+        mRequestedHeight = (int)floorf( sz.Height + 0.5f );
 
         int widthPx = std::max( 1, (int)floorf( mRequestedWidth * mCompositionScale.Width + 0.5f ) );
         int heightPx = std::max( 1, (int)floorf( mRequestedHeight * mCompositionScale.Height + 0.5f ) );