关键词: 自然场景模拟，积雪一融雪模型，实时绘制，CPU

Abstract: Snow meticulous rendering is one of the challenging topics in the field of computer graphics. A method for real time realistic rendering of snow sconce was proposed .First of all, the track of attenuation function as snowfall was applied to snow scenes model based on visual snowfall, which was presented to ensure authenticity at the same time to improve its efficiency. Then real-time accumulating-melting snow model was presented based on temperature change and surface types, by calculating the lossless heat transfer equation, interactive dynamic simulation of the snow scene could be improved. Finally the GPU graphics hardware acceleration technology was used to enhance the efficiency of the whole calculating process. Rendering results arc realistic.

Key words: Simulation of natural scenes, Accumulating-melting snow model, Real-time rendering, GPU