using System;
using UnityEngine;

namespace UnityStandardAssets.ImageEffects
{
	// Token: 0x0200007B RID: 123
	[ExecuteInEditMode]
	[RequireComponent(typeof(Camera))]
	[AddComponentMenu("Image Effects/Other/Screen Overlay")]
	public class ScreenOverlay : PostEffectsBase
	{
		// Token: 0x06000176 RID: 374 RVA: 0x0000FF58 File Offset: 0x0000E358
		public override bool CheckResources()
		{
			base.CheckSupport(false);
			this.overlayMaterial = base.CheckShaderAndCreateMaterial(this.overlayShader, this.overlayMaterial);
			if (!this.isSupported)
			{
				base.ReportAutoDisable();
			}
			return this.isSupported;
		}

		// Token: 0x06000177 RID: 375 RVA: 0x0000FF94 File Offset: 0x0000E394
		private void OnRenderImage(RenderTexture source, RenderTexture destination)
		{
			if (!this.CheckResources())
			{
				Graphics.Blit(source, destination);
				return;
			}
			Vector4 vector = new Vector4(1f, 0f, 0f, 1f);
			this.overlayMaterial.SetVector("_UV_Transform", vector);
			this.overlayMaterial.SetFloat("_Intensity", this.intensity);
			this.overlayMaterial.SetTexture("_Overlay", this.texture);
			Graphics.Blit(source, destination, this.overlayMaterial, (int)this.blendMode);
		}

		// Token: 0x04000300 RID: 768
		public ScreenOverlay.OverlayBlendMode blendMode = ScreenOverlay.OverlayBlendMode.Overlay;

		// Token: 0x04000301 RID: 769
		public float intensity = 1f;

		// Token: 0x04000302 RID: 770
		public Texture2D texture;

		// Token: 0x04000303 RID: 771
		public Shader overlayShader;

		// Token: 0x04000304 RID: 772
		private Material overlayMaterial;

		// Token: 0x0200007C RID: 124
		public enum OverlayBlendMode
		{
			// Token: 0x04000306 RID: 774
			Additive,
			// Token: 0x04000307 RID: 775
			ScreenBlend,
			// Token: 0x04000308 RID: 776
			Multiply,
			// Token: 0x04000309 RID: 777
			Overlay,
			// Token: 0x0400030A RID: 778
			AlphaBlend
		}
	}
}