Real-Time Hair Rendering with Hair Meshes
Article No.: 61, Pages 1 - 10
Abstract
Hair meshes are known to be effective for modeling and animating hair in computer graphics. We present how the hair mesh structure can be used for efficiently rendering strand-based hair models on the GPU with on-the-fly geometry generation that provides orders of magnitude reduction in storage and memory bandwidth. We use mesh shaders to carefully distribute the computation and a custom texture layout for offloading a part of the computation to the hardware texture units. We also present a set of procedural styling operations to achieve hair strand variations for a wide range of hairstyles and a consistent coordinate-frame generation approach to attach these variations to an animating/deforming hair mesh. Finally, we describe level-of-detail techniques for improving the performance of rendering distant hair models. Our results show an unprecedented level of performance with strand-based hair rendering, achieving hundreds of full hair models animated and rendered at real-time frame rates on a consumer GPU.
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Published: 13 July 2024
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