I'm only getting started with modding GalcivIII and I have noticed how planets are now using many more texture, normal maps etc. to show up in game.
Just as I used to do for Galciv II, I would like to add more planets to the Sol system, including Venus, Uranus and Neptune. I know there are already some maps and mods that do include these addition, but I really wanted to learn more about the image files used for the planets and how to add them in a mod.
Venus is my first challenge. I want to make it a toxic planet with, if possible, two different textures: one that would appear on the galactic map, and another that would show up in the planet screen. I would also like to know how the best way to have the continents drawn out (I already have a grayscale heightmap and a normal map for Venus).
Any first tips to get me started? Here are some images of possible textures for Venus, if you are interested :