*

Assets/Standard Assets/Image Effects (Pro Only)/GrayscaleEffect.cs

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+using UnityEngine;
+
+[ExecuteInEditMode]
+[AddComponentMenu("Image Effects/Color Adjustments/Grayscale")]
+public class GrayscaleEffect : ImageEffectBase {
+	public Texture  textureRamp;
+	public float    rampOffset;
+
+	// Called by camera to apply image effect
+	void OnRenderImage (RenderTexture source, RenderTexture destination) {
+		material.SetTexture("_RampTex", textureRamp);
+		material.SetFloat("_RampOffset", rampOffset);
+		Graphics.Blit (source, destination, material);
+	}
+}