#ifndef SHADER_PASS_WATER_COMMON
#define SHADER_PASS_WATER_COMMON

// #pragma enable_d3d11_debug_symbols

// Given that the geometry is either procedural or a mesh given by the user, we only need this as an input
struct VaryingsToPS
{
    VaryingsMeshToPS vmesh;
};

struct PackedVaryingsToPS
{
    PackedVaryingsMeshToPS vmesh;

    // SGVs must be packed after all non-SGVs have been packed.
    // If there are several SGVs, they are packed in the order of HLSL declaration.

    UNITY_VERTEX_OUTPUT_STEREO

#if defined(PLATFORM_SUPPORTS_PRIMITIVE_ID_IN_PIXEL_SHADER) && SHADER_STAGE_FRAGMENT
#if (defined(VARYINGS_NEED_PRIMITIVEID) || (SHADERPASS == SHADERPASS_FULL_SCREEN_DEBUG))
    uint primitiveID : SV_PrimitiveID;
#endif
#endif

#if defined(SHADER_STAGE_FRAGMENT)
    FRONT_FACE_TYPE cullFace : FRONT_FACE_SEMANTIC;
#endif
};

PackedVaryingsToPS PackVaryingsToPS(VaryingsToPS input)
{
    PackedVaryingsToPS output;
    output.vmesh = PackVaryingsMeshToPS(input.vmesh);
    UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(output);
    return output;
}

// We only need the tessellation version
#include "Packages/com.unity.render-pipelines.high-definition/Runtime/Water/Shaders/WaterVertexTessellation.hlsl"

FragInputs UnpackVaryingsToFragInputs(PackedVaryingsToPS packedInput)
{
    FragInputs input = UnpackVaryingsMeshToFragInputs(packedInput.vmesh);

#if defined(PLATFORM_SUPPORTS_PRIMITIVE_ID_IN_PIXEL_SHADER) && SHADER_STAGE_FRAGMENT
#if (defined(VARYINGS_NEED_PRIMITIVEID) || (SHADERPASS == SHADERPASS_FULL_SCREEN_DEBUG))
    input.primitiveID = packedInput.primitiveID;
#endif
#endif

#if defined(VARYINGS_NEED_CULLFACE) && SHADER_STAGE_FRAGMENT
    input.isFrontFace = IS_FRONT_VFACE(packedInput.cullFace, true, false);
#endif

    return input;
}
#endif // SHADER_PASS_WATER_COMMON