Horizon Bend (HB) is an editor extension for Unity3D, which will help you to create «horizon bending» effect

HB contains ~100 modified shaders (Standard, Terrain, Nature, Legacy, Mobile, Particles, etc.) The difference with original shaders lies in modification of vertex program.

HB use well-known approach and offset vertices using the function of parabola. Input of this function based on current HB configuration, bending parameters and position of camera.

Read Documentation | Watch Tutorial Demo (Windows)

Horizon Bending