AnimationCurveToLUT

AnimationCurveToLUT.cs

using UnityEngine;
using Unity.Mathematics;

public static class AnimationCurveExtensions {

        public static Texture2D ToLUT(this AnimationCurve curve, int width, bool apply = true) {
        // create texture
        Texture2D tex = new Texture2D(width, 1, TextureFormat.R8, 0, true);
        float x = 0f;
        float t = 0f;
        float texelSize = 1f / (width - 1);
        for (int i = 0; i < width; i++) {
            t = math.saturate(curve.Evaluate(x));
            tex.SetPixel(i, 0, new Color(t, t, t, t));
            x += texelSize;
        }

        // upload to gpu
        if (apply) {
            tex.Apply();
        }

        return tex;
    }
}