This comprehensive article explores the specialized workflows for creating, optimizing, and implementing seamless PBR textures tailored for large-scale terrains and landscapes in games, archviz, and VFX. It dives into acquisition methods including photogrammetry, procedural generation, and hybrid approaches to produce high-fidelity albedo, roughness, normal, ambient occlusion, height, and metallic maps suited for expansive outdoor environments. The article discusses advanced techniques for tiling, micro-variation, and blending to avoid repetition and maintain realism across vast surfaces. Detailed coverage includes UDIM workflows, texture calibration, and optimization strategies for real-time engines like Unreal and Blender, ensuring both high visual fidelity and performance. Troubleshooting common problems such as visible seams, inconsistent lighting responses, and texture memory manage…