Bind constant buffers where you define them

And remove possible slot collisions.

src_assets/windows/assets/shaders/directx/ScenePS_NW.hlsl

@@ -8,7 +8,7 @@ struct PS_INPUT
     float2 tex : TEXCOORD;
 };
 
-cbuffer SdrScaling : register(b0) {
+cbuffer SdrScaling : register(b1) {
     float scale_factor;
 };