At the very beginning of Doom 2016 project, I was tasked to explore the look of the Mars' Rocks and how they are going being used as modular sets. Here are the rock modular sets in hires and in game lowres models. Scroll down to the bottom of this page to see the screenshots of the environment I put them together in IdTech 4. There are no PBR since its long time ago. Due to the nature of the rocks are so jagged, keeping them lowres and still hold the details is a challenge. All textures are painted using photoshop.The first 4 photos are actual Mars surface references.