Скачать или смотреть Matthew Wilde - Terrain Shader

Terrain shader using attributes from a level editor to determine the material at any point on the map, rendered using a texture atlas. Features rim lighting, normal, specular, parallax and detail mapping, improved blending between attributes etc. All have parameters that can be specified per attribute allowing the effect to range from smooth, shiny greens, to very rough, rocky areas within the same shader. The shader maps definable slopes angles so that rocky cliff faces appear automatically, and snow is added to definable height ranges.

In the later canyon based level, cliff mapping was enhanced to allow much better vertical slope mapping with normal and diffuse textures applied and blended in 3 directions.

Also features geometry grass only around the camera shaded to closely match the terrain lighting, such that the blending is less noticeable. This resulted in features such as rim lighting and specular mapping on the geometry grass as well as the terrain.