using System;
using UnityEngine;

namespace UnityStandardAssets.ImageEffects
{
	// Token: 0x0200006E RID: 110
	[ExecuteInEditMode]
	[RequireComponent(typeof(Camera))]
	[AddComponentMenu("Image Effects/Edge Detection/Edge Detection")]
	public class EdgeDetection : PostEffectsBase
	{
		// Token: 0x06000133 RID: 307 RVA: 0x0000DFA0 File Offset: 0x0000C3A0
		public override bool CheckResources()
		{
			base.CheckSupport(true);
			this.edgeDetectMaterial = base.CheckShaderAndCreateMaterial(this.edgeDetectShader, this.edgeDetectMaterial);
			if (this.mode != this.oldMode)
			{
				this.SetCameraFlag();
			}
			this.oldMode = this.mode;
			if (!this.isSupported)
			{
				base.ReportAutoDisable();
			}
			return this.isSupported;
		}

		// Token: 0x06000134 RID: 308 RVA: 0x0000E007 File Offset: 0x0000C407
		private new void Start()
		{
			this.oldMode = this.mode;
		}

		// Token: 0x06000135 RID: 309 RVA: 0x0000E018 File Offset: 0x0000C418
		private void SetCameraFlag()
		{
			if (this.mode == EdgeDetection.EdgeDetectMode.SobelDepth || this.mode == EdgeDetection.EdgeDetectMode.SobelDepthThin)
			{
				base.GetComponent<Camera>().depthTextureMode |= DepthTextureMode.Depth;
			}
			else if (this.mode == EdgeDetection.EdgeDetectMode.TriangleDepthNormals || this.mode == EdgeDetection.EdgeDetectMode.RobertsCrossDepthNormals)
			{
				base.GetComponent<Camera>().depthTextureMode |= DepthTextureMode.DepthNormals;
			}
		}

		// Token: 0x06000136 RID: 310 RVA: 0x0000E07F File Offset: 0x0000C47F
		private void OnEnable()
		{
			this.SetCameraFlag();
		}

		// Token: 0x06000137 RID: 311 RVA: 0x0000E088 File Offset: 0x0000C488
		[ImageEffectOpaque]
		private void OnRenderImage(RenderTexture source, RenderTexture destination)
		{
			if (!this.CheckResources())
			{
				Graphics.Blit(source, destination);
				return;
			}
			Vector2 vector = new Vector2(this.sensitivityDepth, this.sensitivityNormals);
			this.edgeDetectMaterial.SetVector("_Sensitivity", new Vector4(vector.x, vector.y, 1f, vector.y));
			this.edgeDetectMaterial.SetFloat("_BgFade", this.edgesOnly);
			this.edgeDetectMaterial.SetFloat("_SampleDistance", this.sampleDist);
			this.edgeDetectMaterial.SetVector("_BgColor", this.edgesOnlyBgColor);
			this.edgeDetectMaterial.SetFloat("_Exponent", this.edgeExp);
			this.edgeDetectMaterial.SetFloat("_Threshold", this.lumThreshold);
			Graphics.Blit(source, destination, this.edgeDetectMaterial, (int)this.mode);
		}

		// Token: 0x040002B0 RID: 688
		public EdgeDetection.EdgeDetectMode mode = EdgeDetection.EdgeDetectMode.SobelDepthThin;

		// Token: 0x040002B1 RID: 689
		public float sensitivityDepth = 1f;

		// Token: 0x040002B2 RID: 690
		public float sensitivityNormals = 1f;

		// Token: 0x040002B3 RID: 691
		public float lumThreshold = 0.2f;

		// Token: 0x040002B4 RID: 692
		public float edgeExp = 1f;

		// Token: 0x040002B5 RID: 693
		public float sampleDist = 1f;

		// Token: 0x040002B6 RID: 694
		public float edgesOnly;

		// Token: 0x040002B7 RID: 695
		public Color edgesOnlyBgColor = Color.white;

		// Token: 0x040002B8 RID: 696
		public Shader edgeDetectShader;

		// Token: 0x040002B9 RID: 697
		private Material edgeDetectMaterial;

		// Token: 0x040002BA RID: 698
		private EdgeDetection.EdgeDetectMode oldMode = EdgeDetection.EdgeDetectMode.SobelDepthThin;

		// Token: 0x0200006F RID: 111
		public enum EdgeDetectMode
		{
			// Token: 0x040002BC RID: 700
			TriangleDepthNormals,
			// Token: 0x040002BD RID: 701
			RobertsCrossDepthNormals,
			// Token: 0x040002BE RID: 702
			SobelDepth,
			// Token: 0x040002BF RID: 703
			SobelDepthThin,
			// Token: 0x040002C0 RID: 704
			TriangleLuminance
		}
	}
}