Updated d3d backend initialization + d3d shader model selection

2 files changed, 9 insertions, 2 deletions

diff --git a/Graphics/GraphicsEngineD3D11/src/RenderDeviceD3D11Impl.cpp b/Graphics/GraphicsEngineD3D11/src/RenderDeviceD3D11Impl.cpp
index 3a845241..c6868207 100644
--- a/Graphics/GraphicsEngineD3D11/src/RenderDeviceD3D11Impl.cpp
+++ b/Graphics/GraphicsEngineD3D11/src/RenderDeviceD3D11Impl.cpp
@@ -87,8 +87,13 @@ RenderDeviceD3D11Impl :: RenderDeviceD3D11Impl(IReferenceCounters*          pRef
         default:
             UNEXPECTED("Unexpected D3D feature level");
     }
-    m_DeviceCaps.bSeparableProgramSupported = True;
+    m_DeviceCaps.bSeparableProgramSupported              = True;
     m_DeviceCaps.bMultithreadedResourceCreationSupported = True;
+
+    // Direct3D11 only supports shader model 5.0 even if the device feature level is
+    // above 11.0 (for example, 11.1 or 12.0), so bindless resources are never available.
+    // https://docs.microsoft.com/en-us/windows/win32/direct3d11/overviews-direct3d-11-devices-downlevel-intro#overview-for-each-feature-level
+    m_DeviceCaps.bBindlessSupported = False;
 }
 
 void RenderDeviceD3D11Impl::TestTextureFormat( TEXTURE_FORMAT TexFormat )
diff --git a/Graphics/GraphicsEngineD3D11/src/ShaderD3D11Impl.cpp b/Graphics/GraphicsEngineD3D11/src/ShaderD3D11Impl.cpp
index 46adc289..996b2af5 100644
--- a/Graphics/GraphicsEngineD3D11/src/ShaderD3D11Impl.cpp
+++ b/Graphics/GraphicsEngineD3D11/src/ShaderD3D11Impl.cpp
@@ -35,7 +35,9 @@ static const char* GetD3D11ShaderModel(ID3D11Device* pd3d11Device)
     auto d3dDeviceFeatureLevel = pd3d11Device->GetFeatureLevel();
     switch(d3dDeviceFeatureLevel)
     {
-         // ID3D11Device::Create*Shader methods support DXBC only up to 5.0 version
+        // Direct3D11 only supports shader model 5.0 even if the device feature level is
+        // above 11.0 (for example, 11.1 or 12.0).
+        // https://docs.microsoft.com/en-us/windows/win32/direct3d11/overviews-direct3d-11-devices-downlevel-intro#overview-for-each-feature-level
 #if defined(_WIN32_WINNT_WIN10) && (_WIN32_WINNT >=_WIN32_WINNT_WIN10)
         case D3D_FEATURE_LEVEL_12_1:
         case D3D_FEATURE_LEVEL_12_0: