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4 commits

Author SHA1 Message Date
Pavel Krajcevski 8f4dcca4d7 Add some utility functions for manipulating the block data, including packing colors back into the 64-bit word. 2013-09-24 20:33:48 -04:00
Pavel Krajcevski 1115c2f9e4 Add 2BPP helper functions for our blocks. 
Namely, there are two things that we need to do:
1. Figure out the sub-mode based on the mode bit and the structure of the modulation data. The comments in Block.h describe how we do this.
2. For a given texel index, return 2BPP texel modulation bits.
 2013-09-12 14:30:08 -04:00
Pavel Krajcevski 3f4ffa61b5 Reverse byte order (and interpret the data as a 64 bit word) for PVRTC blocks 2013-09-02 19:13:53 -04:00
Pavel Krajcevski 1cc8f57538 Add block tests 2013-08-30 18:44:50 -04:00