Because CTL is an interpreted language, the performance may be slow. Toxik gives you the option of accelerating a CTL program by converting it to a 3d-lut.This will be faster but may contain errors relative to the original CTL program.

To enable acceleration, click the 3D LUT Enable switch in the CTL tool's Processing tab.The Pre-conditioning option allows you to adjust the distribution of grid points in the 3d-lut. If the input image is in scene-linear color space, setting the Pre-conditioning to Log will arrange the grid points in a roughly logarithmic manner which will help distribute the approximation errors in a more perceptually uniform way.