﻿using System;
using UnityEngine;
using UnityEngine.Rendering.PostProcessing;

[Serializable]
[PostProcess(typeof(OilPaintingRenderer), PostProcessEvent.AfterStack, "Snapshot Pro/Oil Painting")]
public sealed class OilPainting : PostProcessEffectSettings
{
    [Range(1, 17), Tooltip("Oil Painting effect radius.")]
    public IntParameter kernelSize = new IntParameter { value = 5 };
}

public sealed class OilPaintingRenderer : PostProcessEffectRenderer<OilPainting>
{
    public override void Render(PostProcessRenderContext context)
    {
        var sheet = context.propertySheets.Get(Shader.Find("Hidden/SnapshotPro/OilPainting"));
        sheet.properties.SetInt("_KernelSize", settings.kernelSize);
        context.command.BlitFullscreenTriangle(context.source, context.destination, sheet, 0);
    }
}
