"Good memory is inferior to bad writing" commonly used picture file format and texture Format 1, commonly used picture file format:
BMP (Window under Universal format Bitmap in addition to depth optional, no compression)
GIF (a lossless compression scheme for continuous tones based on the LZW algorithm at 50%)
JPEG (very popular image format, lossy compression, transparent pixels not supported, large compression)
PNG (similar to JPG, compression ratio is higher than GIF, support transparency, lossless compression)
2, commonly used texture format:
R5G6B5,
A4R4G4B4,
A1R5G5B5,
R8G8B8,
A8r8g8b8
Pvr:
Rgba8888:32-bit texture with alpha channel, best image qualityrgba4444:16-bit texture with alpha channel, good image qua Lityrgb565:16-bit texture without alpha channel, good image quality but no alpha (transparency)
3, commonly used compressed texture format:
The compression textures based on OpenGL ES are commonly implemented in the following ways:
1) ETC1 (Ericsson texture compression)
2) PVRTC (PowerVR texture compression)
3) ATITC (ATI texture compression)
4) S3TC (S3 texture compression)
4, for picture optimization on mobile devices:
iOS with PVRTC or PVR.CCZ
Android with ETC1
Report:
Http://www.cnblogs.com/zhengye/articles/2193006.html
http://blog.csdn.net/liaowenfeng/article/details/18655011
"Good memory is better than bad pen" common image File format and texture format