ScriptableRenderPipeline/UnityProject/Assets/Editor/Material/Nodes/ScreenPosNode.cs

namespace UnityEditor.Graphs.Material
{
	[Title("Input/Screen Pos Node")]
	public class ScreenPosNode : BaseMaterialNode, IGeneratesVertexToFragmentBlock
	{
		private const string kOutputSlotName = "ScreenPos";

		public override bool hasPreview { get { return true; } }

		public override void Init()
		{
			name = "ScreenPos";
			base.Init();
			AddSlot(new Slot(SlotType.OutputSlot, kOutputSlotName));
		}

		public override string GetOutputVariableNameForSlot(Slot slot, GenerationMode generationMode)
		{
			return "IN.screenPos";
		}

		public void GenerateVertexToFragmentBlock(ShaderGenerator visitor, GenerationMode generationMode)
		{
			visitor.AddShaderChunk(precision + "4 screenPos;", true);
		}
	}
}