message: now I know what VS .filters is for
diff: <ClCompile Include="COpenGL3DTexture.cpp" />
  <ClCompile Include="COpenGLCubemapTexture.cpp" />
  <ClCompile Include="COpenGLFrameBuffer.cpp" />
  - <ClCompile Include="COpenGLPersistentlyMappedBuffer.cpp" />
  <ClCompile Include="COpenGLQuery.cpp" />
  - <ClCompile Include="COpenGLRenderBuffer.cpp" />
  <ClCompile Include="COpenGLTransformFeedback.cpp" />
  <ClCompile Include="coreutil.cpp" />
  <ClCompile Include="COSOperator.cpp" />
  <ClCompile Include="CForsythVertexCacheOptimizer.cpp" />
  <ClCompile Include="COverdrawMeshOptimizer.cpp" />
  <ClCompile Include="COpenGLVAOSpec.cpp" />
  + <ClCompile Include="CAssetManager.cpp" />
  </ItemGroup>
  <ItemGroup>
  <ClInclude Include="..\..\include\EDriverFeatures.h" />
  <ClInclude Include="COpenGLVAOSpec.h" />
  <ClInclude Include="..\..\include\CConcurrentObjectCache.h" />
  <ClInclude Include="..\..\include\CObjectCache.h" />
  + <ClInclude Include="CAssetManager.h" />
  + <ClInclude Include="..\..\include\IAssetManager.h" />
  </ItemGroup>
  <ItemGroup>
  <Library Include="clwinlib\OpenCL.lib" />
  