GPU-Oriented JPEG-Like Texture Compression

摘要

This paper presents a study on using lossy texture compression techniques that include a lossless variable-length coding. The encoding process is performed on the CPU and the decoding is designed to run on the GPU in real-time. In this study we have investigated the widely accepted JPEG standard and modified it to fit the stream processing nature of contemporary GPUs. We have found that this compression technique is valid for many interactive graphics applications that hit the limit of the available video memory, such as computer games. This approach can dramatically reduce video memory and bandwidth consumption without compromising image quality too much. Our experimental results show that it is possible to decode around 312-mega texels per second,i.e., decoding a 1K x 1K texture at 312 fps.