use build .bat to build faster

JulietShaderCompiler/JulietShaderCompiler.bff

@@ -6,25 +6,25 @@
 .ProjectConfigsShader = {} 
 .DXCSourcePath = '$ProjectPath$/DXShaderCompiler'
 
+// 0. Single Unity generator target
+Unity( '$ProjectName$-Unity' )
+{
+    .UnityInputPath             = '$ProjectPath$/'
+    .UnityOutputPath            = 'Intermediate/$ProjectPath$/'
+    .UnityOutputPattern         = '$ProjectName$_Unity*.cpp'
+    .UnityMaxFiles              = 5
+    .UnityPBRoot                = ''
+}
+
 ForEach( .BuildConfig in .ShaderCompilerConfigs )
 {
     Using( .BuildConfig )
     .OutputBase + '\$Platform$-$BuildConfigName$'
-    
-    // Unity
-    //--------------------------------------------------------------------------
-    Unity( '$ProjectName$-Unity-$Platform$-$BuildConfigName$' )
-    {
-        .UnityInputPath             = '$ProjectPath$/'
-        .UnityOutputPath            = '$OutputBase$/$ProjectPath$/'
-        .UnityOutputPattern         = '$ProjectName$_Unity*.cpp'
-        .UnityMaxFiles              = 5
-    }
 
     // 2. Define the Build Targets for this specific configuration
     ObjectList( '$ProjectName$-Obs-$Platform$-$BuildConfigName$' )
     {
-        .CompilerInputUnity = '$ProjectName$-Unity-$Platform$-$BuildConfigName$'
+        .CompilerInputUnity = '$ProjectName$-Unity'
         .CompilerOutputPath = '$OutputBase$/$ProjectPath$/'
         .CompilerOptions    + ' "-IJuliet/include"'
                             + ' "-IJulietShaderCompiler"'