Render time approx 10hours, 4x1.73ghz cpu, Blender 2.78.
Experimenting with PBR and vegetation, replacing diffuse with subsurf scattering.
- No bounce for sun lamp
- Foreground grass is made by alpha-mapped 2-face “billboard-style” objects.
- Leaves are also alpha-mapped planes.
- Use of tessellation to reduce memory usage for background trees