- 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
- For PVRTC1, we now memset() any extra blocks after the blocks we know will be transcoded into. This is done because in GL there is padding that occurs on textures smaller than 8x8.
- Removing all OpenMP usage and replacing it with a basis C++11 job system.
- Fixing TSVQ class so it can split very long "thin" clusters that before weren't being split. This improves endpoint quantization on videos and complex 2D textures.
- More frontend perf. optimizations.
Tested on OSX, Linux with gcc/clang, and Win using MSVC 2019.
Adding -only_etc1 command line option, because sometimes during unpack you only want the ETC1 images.
Total timing and avg. Y PSNR across 59 test images, quality 128:
L Time PSNR
0 121.4 35.45
1 172.4 36.87
2 216.0 37.13
3 511.4 37.15
4 665.9 37.41
5 1483.4 37.43
Initial release:
L Time PSNR
0 216.77 37.13
1 701.84 37.41
- Adding -csv_file option, to generate .csv files for mass benchmarking/testing
- Adding -no_ktx option, to avoid writing large .KTX files while unpacking
- Fixing printf() format issue when one of the -multifile options wasn't correct
Rebuilt compiled javascript transcoder
Increasing the max codebook size to 16K vs. 8K, for a major increase in the max achievable quality.
Adding exception catching to command line tool.
Enabling debug iterators on MSVC.
Refining command line options, adding "-individual" flag to create multiple .basis files (vs. a texture array).
Changing default colorspace to sRGB, because that's probably the best default. -linear disables this and uses linear colorspace metrics.
PNG reader in 32-bit builds checks the size of the file before loading to avoid out of memory exceptions.
Adding new fields to the basis header: texture type and framerate. Texture type may be 2D, 2D array, video, volume, or cubemap array. The compressor makes sure that anything other than pure 2D follows certain constraints (cubemap arrays must have a multiple of 6 input images, videos/texture array images all must have the same resolution/# of mipmaps, etc.)
When unpacking cubemaps, the -unpack command now writes cubemap .KTX files which various tools like PVRTexTool support.
Adding new GPU texture format decoders for BC1/4/5, ETC2 EAC alpha, and BC7 mode 6
Adding GPU texture unpack failure checks and warnings
Adding support for 3 color blocks to transcoder, and making sure that BC3 blocks will never use 3 color (punchthrough alpha) blocks.
