PR 408's cmakelists.txt file has too many issues (OpenCL breaks on Windows/OSX) and changing our options to have the "BASISU_" prefix will break upstream builds.
Fixing overflow issue on extreme colors in color_distance().
Explicitly disabling unaligned addressing in miniz and transcoder when UBSAN is enabled
Disabling a needless optimization in transcoder causing ubsan issues (that could have easily been worked around in a different way, but it was an unnecessary optimization to begin with)
Rebuild wasm builds
- Minor fix to basisu_frontend::optimize_selector_codebook() so the new_selector_cluster_indices array is initialized correctly. (The backend doesn't use this array so no harm was being done.)
- Optimized ETC1S encoder (3-4.5x faster)
- Added optional SSE 4.1 support to encoder
- Switched from std::vector to a custom vector in the encoder and transcoder
- Added CppSPMD (SSE only for now)
- UASTC RDO is now more effective, but the command line parameter controlling qualiy has changed (to "lambda")
Some of our static analysis tools were complaining about unreachable code due to "#if ... return false; #endif code " blocks. This was changed to "#if ... return false #else ... #endif" which doesn't change the functionality but makes the static analyzers happy.
Also removed BASISU_NOTE_UNUSED on two variables that are no longer declared (resulting in a build error when BASISD_SUPPORT_UASTC was not defined)
Encoder is now a library in the "encoder" directory
JavaScript wrappers now expose the entire codec: encoder, transcoder, container independent transcoding, and .basis file information
(1 << num_bits) was converted to a signed integer that caused an overflow (as num_bits was usually set to 31). It worked fine since the value was later converted back to uint32_t but signed integer overflow is technically an undefined behavior and it was triggering errors in our automated tests.
With the default Xcode 11 settings, these non-functional changes remove warnings when building for iOS and Mac, notably:
Possible misuse of comma operator here
Implicit conversion loses integer precision: 'long' to 'int'
- Removing BC7 mode 6 support from transcoder (will alway use the much smaller mode 5 tables now)
- Adding BMP support
- Adding -bench mode, for development
- CMakeLists.txt file now compatible with Visual Studio 2019 (MSVC)
- Renaming -no_auto_global_sel_pal to -auto_global_sel_pal, disabling global selector palette usage by default to speed up compression on small images
- Renaming texture format enums
- Fixing uninitialized memory issue in front end - it wouldn't have affected the correctness of the output, or output quality
- Bumping command line tool up to v1.10
