#if SHADERPASS != SHADERPASS_GBUFFER
#error SHADERPASS_is_not_correctly_define
#endif

#include "VertMesh.hlsl"

PackedVaryingsType Vert(AttributesMesh inputMesh)
{
    VaryingsType varyingsType;
    varyingsType.vmesh = VertMesh(inputMesh);
    return PackVaryingsType(varyingsType);
}

#ifdef TESSELLATION_ON

PackedVaryingsToPS VertTesselation(VaryingsToDS input)
{
    VaryingsToPS output;
    output.vmesh = VertMeshTesselation(input.vmesh);
    return PackVaryingsToPS(output);
}

#include "TessellationShare.hlsl"

#endif // TESSELLATION_ON

void Frag(  PackedVaryingsToPS packedInput,
            OUTPUT_GBUFFER(outGBuffer)
            OUTPUT_GBUFFER_SHADOWMASK(outShadowMaskBuffer)
            #ifdef _DEPTHOFFSET_ON
            , out float outputDepth : SV_Depth
            #endif
            )
{
    FragInputs input = UnpackVaryingsMeshToFragInputs(packedInput.vmesh);

    // input.positionSS is SV_Position
    PositionInputs posInput = GetPositionInput(input.positionSS.xy, _ScreenSize.zw);
    UpdatePositionInput(input.positionSS.z, input.positionSS.w, input.positionWS, posInput);

#ifdef VARYINGS_NEED_POSITION_WS
    float3 V = GetWorldSpaceNormalizeViewDir(input.positionWS);
#else
    float3 V = 0; // Avoid the division by 0
#endif

    SurfaceData surfaceData;
    BuiltinData builtinData;
    GetSurfaceAndBuiltinData(input, V, posInput, surfaceData, builtinData);

    BSDFData bsdfData = ConvertSurfaceDataToBSDFData(surfaceData);

    PreLightData preLightData = GetPreLightData(V, posInput, bsdfData);

    float3 bakeDiffuseLighting = GetBakedDiffuseLigthing(surfaceData, builtinData, bsdfData, preLightData);

    ENCODE_INTO_GBUFFER(surfaceData, bakeDiffuseLighting, posInput.positionSS, outGBuffer);
    ENCODE_SHADOWMASK_INTO_GBUFFER(float4(builtinData.shadowMask0, builtinData.shadowMask1, builtinData.shadowMask2, builtinData.shadowMask3), outShadowMaskBuffer);

#ifdef _DEPTHOFFSET_ON
    outputDepth = posInput.deviceDepth;
#endif
}