PQS terrain materials

The PQS { } node's Material { } paints a body's near-surface terrain — the real, subdivided quad-sphere you fly down to and land on, which fades in over the distant scaled-space sphere as the camera descends. The shader is chosen with materialType = ….

• Vacuum — the base sphere-projection terrain, for airless bodies.
• Basic — the aerial-perspective (atmosphere) variant of Vacuum.
• Main — full world-space triplanar terrain with every elevation band normal-mapped.
• Optimized — like Main, but only the mid band is normal-mapped.
• Extra — Main plus an ocean-fog distance control.
• MainFastBlend — the 1.8 "fast blend" terrain used by stock Kerbin.
• OptimizedFastBlend — the cut-down fast-blend build (mid band only).
• Triplanar — the 1.8 zoom-rotation triplanar terrain.
• TriplanarAtlas — the 1.9 texture-array zoom-rotation terrain (Ultra detail).
• MainTriplanarZoomRotation — the PBR (specular) zoom-rotation terrain.