Computer modelling of fallen snow
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
Resolution independent curve rendering using programmable graphics hardware
ACM SIGGRAPH 2005 Papers
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The simulation of natural phenomena plays an important role in the area of computer game, film production, simulation and so on. Snow is an important part of the simulation of nature phenomena, so how to generate high-quality and controllable snow texture is significant. Now the algorithms of generating snow are based on triangulated surfaces, they put some triangles on multi-layer concentric spheres to form snow. The disadvantage of these algorithms is that the edges of snow are not smooth enough, the angles of snow are too acute. The approach is splitting up a triangle to four, and then rendering the triangles associated with vertexes using the rendering algorithm of Quadric Bezier Curve based on GPU, and rendering the triangle formed by points on edges normally. Finally it can generate high-quality snow texture with the technology of alpha blending.