Realistic fabric material rendering is a very important research direction in virtual reality, entertainment, industrial and other application fields. In this direction, many studies have been made. In this paper, we present a pipeline, including a super sampling and dyeing curve based on the diffusion and staining effect of various stains on the fabric surface. Firstly, virtual fabric structures are modeled by voxel-method to simply fabric yarns. Secondly, the fluid diffusion simulation is carried out by calculating the solubility between multi-solvent stains. Finally, the ef-fect of stain diffusion is calculated by dyeing precipitation. Through this model, we can simulate multi-solvents liquid diffusion and dyeing effects on the surface of the fabric and can reach the degree of photorealism.真实感织物材质渲染在虚拟现实、娱乐、工业等应用领域中是非常关键的研究方向. 针对多种污渍在织物 表面的扩散与污染效果, 提出基于物理的与子像素采样及染色曲线相结合的计算方法, 用于模拟多相溶剂在织物表 面的扩散及污染效果. 首先通过将复杂织物纱线结构进行体素化简化建模, 其次通过计算流体之间的可互溶性进行 流体扩散模拟, 最后通过染色沉淀的方式计算污渍扩散效果. 模拟渲染的对比结果表明, 通过该方法, 可实现单一污 渍的独立扩散、多污渍混合及排斥扩散、多污渍染色遗留效果、污渍分布控制等效果, 并可达到与真实拍摄的照片 近似真实感效果