RGBE文件的扩展名为.hdr，RGBE正式名称为RadianceRGBE格式。这个本来是BR、FR等作为radiance材质的一种格式，也叫做radiancemap，后来成为流行的一种HDR格式。所谓E，就是指数。RadianceRGBE文件每个通道为8bitBYTE数据类型，4个通道一共是32bit。RGBE可以使用RLE压缩编码压缩，也可以不压缩。由文件头、RGBE数据组成。-RGBE RGBE file name extension. HDR, formally known as RadianceRGBE format.This was BR, FR, etc as a format of radiance material, also called radiancemap, later became a popular an HDR format.The so-called E, is index.RadianceRGBE file for each channel, eight bitbyte data type, 4 channel is a total of 32 bit.RGBE can use RLE compression coding compression, also can not compress.Consists of a header, RGBE data.