ScriptableRenderPipeline/MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/BitangentMaterialSlot.cs

using System;

namespace UnityEditor.ShaderGraph
{
    [Serializable]
    public class BitangentMaterialSlot : SpaceMaterialSlot, IMayRequireBitangent
    {
        public BitangentMaterialSlot() : base()
        {}

        public BitangentMaterialSlot(int slotId, string displayName, string shaderOutputName, CoordinateSpace space,
            ShaderStage shaderStage = ShaderStage.Dynamic, bool hidden = false)
            : base(slotId, displayName, shaderOutputName, space, shaderStage, hidden)
        {}

        public override string GetDefaultValue(GenerationMode generationMode)
        {
            return space.ToVariableName(InterpolatorType.BiTangent);
        }

        public NeededCoordinateSpace RequiresBitangent()
        {
            if (isConnected)
                return NeededCoordinateSpace.None;
            return space.ToNeededCoordinateSpace();
        }
    }
}