Improve colors for nv12

assets/MergeUVPS.hlsl

@@ -10,6 +10,8 @@ cbuffer ColorMatrix : register(b0) {
 	float4 color_vec_y;
 	float4 color_vec_u;
 	float4 color_vec_v;
+	float2 range_y;
+	float2 range_uv;
 };
 
 //--------------------------------------------------------------------------------------
@@ -24,5 +26,8 @@ float2 main_ps(FragTexWide input) : SV_Target
 	float u = dot(color_vec_u.xyz, rgb) + color_vec_u.w;
 	float v = dot(color_vec_v.xyz, rgb) + color_vec_v.w;
 
-	return float2(u, v);
+	u = u * range_uv.x + range_uv.y;
+	v = v * range_uv.x + range_uv.y;
+
+	return float2(u, v * 224.0f/256.0f + 0.0625);
 }

assets/MergeYPS.hlsl

@@ -6,6 +6,8 @@ cbuffer ColorMatrix : register(b0) {
 	float4 color_vec_y;
 	float4 color_vec_u;
 	float4 color_vec_v;
+	float2 range_y;
+	float2 range_uv;
 };
 
 struct PS_INPUT
@@ -17,7 +19,7 @@ struct PS_INPUT
 float main_ps(PS_INPUT frag_in) : SV_Target
 {
 	float3 rgb = image.Sample(def_sampler, frag_in.tex, 0).rgb;
-	float y = dot(color_vec_y.xyz, rgb) + color_vec_y.w;
+	float y = dot(color_vec_y.xyz, rgb);
 
-	return y;
+	return y * range_y.x + range_y.y;
 }