Deferred Rendering - Practical Rendering and Computation with Direct3D 11 - page 497

struct PSInput
{

float4 PositionSS : SV_Position;

float2 TexCoord : TEXCOORD;

float3 NormalWS : NORMALWS;

float3 PositionWS : POSITIONWS;

float3 TangentWS : TANGENTWS;

float3 BitangentWS : BITANGENTWS;

};

struct PSOutput
{

float4 Normal : SV_Target0;

float4 DiffuseAlbedo : SV_Target1;

float4 SpecularAlbedo : SV_Target2;

float4 Position : SV_Target3;

};

// G-Buffer vertex shader, with normal mapping
VSOutput VSMain( in VSInput input )
{

VSOutput output;

// Convert position and normals to world space
output.PositionWS = mul( input.Position, WorldHatrix ).xyz;
float3 normalWS = normalize( mul( input. Normal, (float3x3)WorldMatrix ) );
output.NormalWS = normalWS;

// Reconstruct the rest of the tangent frame
float3 tangentWS = normalize( mul( input. Tangent.xyz,
(float3x3)WorldMatrix ) );
float3 bitangentWS = normalize( cross( normalWS, tangentWS ) )
* input.Tangent.w;

output.TangentWS = tangentWS;
output.BitangentWS = bitangentWS;

// Calculate the clip-space position
output.PositionCS = mul( input. Position, WorldViewProjMatrix );

// Pass along the texture coordinate
output.TexCoord = input.TexCoord;

return output;

}

// G-Buffer pixel shader, with normal mapping
PSOutput PSMain( in PSInput input )
{

PSOutput output;

// Sample the diffuse map
float3 diffuseAlbedo = DiffuseMap.Sample( AnisoSampler,
input.TexCoord ).rgb;