// NiloToon Fur Renderer Feature
// Add this to your URP Renderer to enable fur shell rendering
// This allows single-material fur shaders to work properly
//
// Note: Fur mask rendering is now integrated into NiloToonPrepassBufferRTPass
// The fur mask is automatically rendered to G and B channels of _NiloToonPrepassBufferTex

using System;
using UnityEngine;
using UnityEngine.Rendering.Universal;

namespace NiloToon.NiloToonURP
{
    [Serializable]
    public class NiloToonFurRendererFeatureSettings
    {
        [Header("Fur Shell Settings")]
        public NiloToonFurShellPass.Settings furShellSettings = new NiloToonFurShellPass.Settings();
    }

    public class NiloToonFurRendererFeature : ScriptableRendererFeature
    {
        public NiloToonFurRendererFeatureSettings settings = new NiloToonFurRendererFeatureSettings();

        NiloToonFurShellPass FurShellPass;

        public override void Create()
        {
            ReInitPassesIfNeeded();
        }

        private void ReInitPassesIfNeeded()
        {
            if (FurShellPass == null)
                FurShellPass = new NiloToonFurShellPass(settings.furShellSettings);

            // Set render pass events
            FurShellPass.renderPassEvent = settings.furShellSettings.renderTiming;
        }

        public override void AddRenderPasses(ScriptableRenderer renderer, ref RenderingData renderingData)
        {
            ReInitPassesIfNeeded();

            // Update render timing in case it changed
            FurShellPass.renderPassEvent = settings.furShellSettings.renderTiming;

            // Enqueue fur shell pass for actual fur rendering
            // Note: Fur mask is rendered via NiloToonPrepassBufferRTPass (NiloToonFurShellMask LightMode)
            renderer.EnqueuePass(FurShellPass);
        }

#if UNITY_2022_2_OR_NEWER
        protected override void Dispose(bool disposing)
        {
            FurShellPass = null;
        }
#endif
    }
}