Rendered using GPU and V-Ray RT 3.5.
Bonus 4k renders straight out of the renderer (no postpro): basil_001_4k basil_002_4k
Shading created with the help of in-house texture capture workflow and procedural maps.
Texture Capture tool - http://dabarti.com/capture
Breakdown on YouTube: https://www.youtube.com/watch?v=taepvcXHIfQ