Render NV12 color format

assets/MergeUVPS.hlsl

@@ -1,27 +1,32 @@
-//--------------------------------------------------------------------------------------
-// CombinedUVMipsPS.hlsl
-//--------------------------------------------------------------------------------------
-Texture2D txInputU : register(t0);
-Texture2D txInputV : register(t1);
-Texture1D txInputShift : register(t2);
+Texture2D image : register(t0);
 
-SamplerState GenericSampler : register(s0);
+SamplerState def_sampler : register(s0);
 
-struct PS_INPUT
-{
-	float4 Pos : SV_POSITION;
-	float2 Tex : TEXCOORD;
+struct FragTexWide {
+	float3 uuv : TEXCOORD0;
 };
 
 //--------------------------------------------------------------------------------------
 // Pixel Shader
 //--------------------------------------------------------------------------------------
-float PS(PS_INPUT input) : SV_Target
+float2 PS(FragTexWide input) : SV_Target
 {
-	float fShift = (float)txInputShift.Sample(GenericSampler, input.Tex.x);
+	// float4 color_vec_y = { 0.301f, 0.586f, 0.113f, 0.0f };
+	// float4 color_vec_u = { -0.168f, -0.328f, 0.496f, 128.0f / 256.0f };
+	// float4 color_vec_v = { 0.496f, 0.414f, 0.082f, 128.0f / 256.0f };
+	float4 color_vec_y = { 0.299, 0.587, 0.114, 0.0625 };
+	float4 color_vec_u = { -0.168736, -0.331264, 0.5, 0.5 };
+	float4 color_vec_v = { 0.5, -0.418688, -0.081312, 0.5 };
 
-	if(fShift == 0.0f)
-		return (float)txInputU.SampleLevel(GenericSampler, input.Tex, 1.0f);
-	else
-		return (float)txInputV.SampleLevel(GenericSampler, input.Tex, 1.0f);
+	// float4 color_vec_y = { 0.2578f, 0.5039f, 0.0977, 0.0625 };
+	// float4 color_vec_u = { -0.1484, 0.2891, 0.4375, 128.0f / 256.0f };
+	// float4 color_vec_v = { 0.4375, -0.3672, -0.0703, 128.0f / 256.0f };
+
+	float3 rgb_left = image.Sample(def_sampler, input.uuv.xz).rgb;
+	float3 rgb_right = image.Sample(def_sampler, input.uuv.yz).rgb;
+	float3 rgb = (rgb_left + rgb_right) * 0.5;
+	
+	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);
 }