基于Shader的CSG几何体的实时渲染

Real Time Rendering of CSG Geometry Based on Shader

传统基于CSG(构造实体几何)布尔运算的建模和运算过于复杂,使用布尔运算合成一些复杂的几何实体时会增加运算量,并且运算效率低。针对以上问题,提出基于Shader的CSG几何体的实时渲染,建立CSG基元模型,解析布尔表达式后,应用Shader对几何图形进行布尔运算的实时渲染,克服了传统基于CSG布尔运算下稳定性不足的问题,并加快了处理速度,提高了渲染效率。

The traditional modeling and operation based on CSG(construct solid geometry)Boolean operation is too complex.Using Boolean operation to synthesize some complex geometric entities will increase the amount of operation,and the operation effi⁃ciency is low.In view of the above problems,a real-time rendering of CSG geometry based on Shader is proposed,and CSG primi⁃tive model is established.After the Boolean expression is analyzed,the real-time rendering of geometry by using Shader for Boolean operation overcomes the problem of insufficient stability under the traditional Boolean operation based on CSG,and speeds up the processing speed and improves the rendering efficiency.