using System;
using UnityEngine;
using UnityEngine.Serialization;

namespace UltimateWater.Internal
{
	[Serializable]
	public sealed class BlurSSS : Blur
	{
		[SerializeField]
		[FormerlySerializedAs("initializedDefaults")]
		private bool _InitializedDefaults;

		public override void Validate(string shaderName, string computeShaderName = null, int kernelIndex = 0)
		{
			base.Validate(shaderName, computeShaderName, kernelIndex);
			if (!_InitializedDefaults)
			{
				base.Iterations = 5;
				_InitializedDefaults = true;
			}
		}

		public void Apply(RenderTexture source, RenderTexture target, Color absorptionColor, float worldSpaceSize, float lightFractionToIgnore)
		{
			ApplyPixelShader(source, target, absorptionColor, worldSpaceSize, lightFractionToIgnore);
		}

		private void ApplyPixelShader(RenderTexture source, RenderTexture target, Color absorptionColor, float worldSpaceSize, float lightFractionToIgnore)
		{
			Color value = absorptionColor * (-2.5f * worldSpaceSize);
			float num = ((!(value.r > value.g)) ? value.g : value.r);
			if (value.b > num)
			{
				num = value.b;
			}
			float value2 = Mathf.Log(lightFractionToIgnore) / num;
			FilterMode filterMode = source.filterMode;
			source.filterMode = FilterMode.Bilinear;
			Material blurMaterial = base.BlurMaterial;
			blurMaterial.SetColor(ShaderVariables.AbsorptionColorPerPixel, value);
			blurMaterial.SetFloat(ShaderVariables.MaxDistance, value2);
			Graphics.Blit(source, target, blurMaterial, 0);
			source.filterMode = filterMode;
		}
	}
}