Add project files.

UI/WPF/Resources/Effects/ContrastEffect.fx

@@ -0,0 +1,12 @@
+sampler2D implicitInput : register(s0);
+float contrast : register(C0);
+
+float4 main(float2 uv : TEXCOORD) : COLOR
+{
+    float4 color = tex2D(implicitInput, uv); 
+    float value = (1 - contrast) / 2;
+
+    color.rgba = color.rgba * contrast + value;
+    
+    return color;
+}