MCS Caves & Overhangs

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This extension REQUIRES Mesh Combine Studio 2 and is compatible with Unity 2017.x, 2018.x and 2019.x

This extension gives the best performance possible by using the easiest way to get amazing looking Caves and Overhangs on any terrain solution.


The easiest way to create caves and overhangs (and best looking) is by stacking rock models inside the Unity Editor. The issues:
1). It’s bad for performance because there’s a lot of rock geometry (triangles) that overlaps with other rocks or are below the terrain. So many triangles are drawn that are never visible and this also results in overdraw on the GPU which reduces performance.
2). It’s bad for lightmapping. Lightmapping gives the best looking results especially on caves but a lot of lightmap texture space (increase in memory needed) is wasted with the never visible rock triangles.

This MCS extension solves those issues in a few clicks and removes all rock triangles that are never visible. What we measured is that it removes ~60-75% of the rock triangles in our arenas.

It beats performance of GPU Instancing, as with cell based combining and only 1/3 of the original triangles to draw it’s obvious whose the winner.

Features:
* Compatible with any rocks asset pack.
* Compatible with Unity terrain, any Voxel terrain and terrain mesh solution.
* Reduces draw calls by using MCS cell-based combining.
* Much faster than GPU Instancing.
* Geometry reduction of ~60-80%.
* ~3x faster to render.
* ~3x less over draw on the GPU.
* ~3x cheaper shadows.
* ~3x reduced lightmap texture space needed (when using lightmapping).
* ~3x reduced memory needed compared to Static Batching or Classic Combining.
* Cheaper colliders (physics).
* Supports lightmapping.
* Supports LODs.
Category: Other 3D

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