Originally Posted By: EpsiloN
How do you lerp them together? You read the color codes and get a value between both heightmaps?


Yes, read color of both pixels and lerp with 0.333 and 0.666:

Code:
finalColor.red = perlinNoiseColor.red*0.666 + voronoiColor.red*0.333;
finalColor.green = perlinNoiseColor.green*0.666 + voronoiColor.green*0.333;
finalColor.blue = perlinNoiseColor.blue*0.666 + voronoiColor.blue*0.333;