Shader.targets

<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <ItemGroup>
    <ShaderFile Include="**\*.fx" />
  </ItemGroup>

  <PropertyGroup>
    <!--TODO: Pass path to EasyXnb as CLI argument.-->
    <DestinationFolder>Effects</DestinationFolder>
  </PropertyGroup>

  <Target
    Name="BuildShaders"
    BeforeTargets="BuildMod"
    Inputs="@(ShaderFile)"
    Outputs="@(ShaderFile->'$(DestinationFolder)\%(Filename).xnb')">

    <Message Importance="normal" Text="Building shaders..." />
    <Message Importance="normal" Text="@(ShaderFile) was modified." />

    <!--Turns all .fx files into .xnb files.-->
    <Exec Command="EasyXnb.exe" WorkingDirectory="Effects\EasyXnb\" />

    <!--Only copies .xnb files corresponding to modified .fx files into DestinationFolder.-->
    <Copy SourceFiles="@(ShaderFile->'Effects\EasyXnb\%(Filename).xnb')" DestinationFolder="$(DestinationFolder)"/>

    <!--Removes intermediate .xnb files from EasyXnb directory.-->
    <ItemGroup>
      <TemporaryShaderFiles Include="Effects\EasyXnb\*.xnb"/>
    </ItemGroup>
    <Delete Files="@(TemporaryShaderFiles)" />

    <Message Importance="normal" Text="Finished building shaders." />
  </Target>
</Project>