Add project files.

UI/WPF/Resources/Effects/BrightnessEffect.fx

@@ -0,0 +1,10 @@
+sampler2D implicitInput : register(s0);
+float brightness : register(C0);
+
+float4 main(float2 uv : TEXCOORD) : COLOR
+{
+    float4 color = tex2D(implicitInput, uv); 
+    color.rgba *= brightness;
+    
+    return color;
+}