Fixed-length texture compressed data storage system based on image distribution

The invention discloses a fixed-length texture compression data storage system based on image distribution. The system comprises a head part which stores the compression mode of a storage texel block;an endpoint color for storing an endpoint RGB component value of the texel block; a weight list which is used for storing the weight corresponding to each texel; a distribution index which is used for storing distribution indexes of texel during double-distribution double-plane and three-part compression; and a plane index which is used for storing channel information which independently uses a group of weights in the RGB three channels. The length of compressed data is fixed, and the memory overhead is saved; the code rate is fixed, and decompression is facilitated. 本发明公开了一种基于图像分布的定长纹理压缩数据存储系统，头部，存储纹素块的压缩方式；端点颜色，存储纹素块的端点RGB分量值；权重列表，存储每个纹素对应的权重；分布索引，存储双分布双平面、三分部压缩时纹素的分布索引；平面索引，存储RGB三通道中单独使用一组权重的通道信息。本发明压缩数据长度固定，节约内存开销；固定码率，便于解压。