Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. PVRTC -I and -II are a family of block based texture compression formats used in PowerVR''s MBX and SGX technologies. The PVRTC-I algorithm is documented in Simon Fenney''s paper "Texture Compression using Low-Frequency Signal Modulation" that was presented at Graphics Hardware 200 ...Full description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. PVRTC -I and -II are a family of block based texture compression formats used in PowerVR''s MBX and SGX technologies. The PVRTC-I algorithm is documented in Simon Fenney''s paper "Texture Compression using Low-Frequency Signal Modulation" that was presented at Graphics Hardware 2003. These differ from block-based texture formats such as S3TC and Ericsson Texture Compression (ETC) in that the compressed image is represented by two lower resolution images which are bilinearly upscaled and then blended according to low precision per-pixel weights. They also differ in that they support ARGB data in both 4-bpp and 2-bpp modes.