Originally posted by Chosker
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Is very unusual for me to think in build a pavement road without first flattening the selected ground under the road.
If you want a perfectly plain road in an uneven surface, no matter tessellation, POM, height-field deformation, bump noises, foliage, LOD system, first of all is necessary thinking a way to cleaning and flattening the terrain.
I think applying decal and normal map 'only' in one terrain totally cracked, full of irregularities, can shows an unsatisfactory result also. Especially when you want a perfect concrete road. It can work well only when you need a mud road, with tire trails using normal map or parallax occlusion, But even so there will be situations where is necessary to flattening the ground and removing automatically foliage (rocks and grass) along the 'decal' spline.
The bigger question here is spline decals exists a long time in CryEngine, but so far, exists only in the field of fiction in the Unreal Engine.
I have provided some solutions only.
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