123 Commits

Author SHA1 Message Date
Arseny Kapoulkine
f5d502912d Make codec options externally configurable and remove BC7 support
This change makes it possible to exclude formats using compile time
options. BC7 is *never* exposed on the web and it has an absolutely huge
coding table which means we're just wasting space.

basis_transcoder.js 58707
basis_transcoder.wasm 224404
2019-05-22 20:57:17 -07:00
Arseny Kapoulkine
af8f9f8bc4 Remove assert(x) hack in favor of NDEBUG
basis_transcoder.js 140999
basis_transcoder.wasm 832985
2019-05-22 20:51:29 -07:00
Rich Geldreich
1afb8e714b Fixing BASISU_DEVEL_MESSAGES for MSVC. 2019-05-10 22:33:52 -07:00
Rich Geldreich
81464a6d6b Changing the ETC1S->BC4 and ETC1S->ETC2 EAC transcoders so they convert from the source red channel, not source green. Source red makes more sense when transcoding to BC4/BC5, especially when the source texture only has color slices. BC4 is red, and BC5 is red/green. This change makes no difference if the source texture slices are grayscale. 2019-05-10 22:04:48 -07:00
Rich Geldreich
4f08db6525 Adding more checks to canonical Huffman decoder's table initialization function. They don't seem necessary, as I didn't discover them during fuzzing. These fixes are precautionary. 2019-05-10 16:30:25 -07:00
Rich Geldreich
878f523522 Adding check to make sure codelength Huffman table was actually created successfully. 2019-05-09 22:14:23 -07:00
Rich Geldreich
ce9aeb9cc8 Refining the last Huffman fix found through fuzz testing 2019-05-09 22:00:59 -07:00
Rich Geldreich
9af44e629f Another fuzz testing fix 2019-05-09 21:49:07 -07:00
Rich Geldreich
6da5bf05a6 Another bugfix found during fuzz testing 2019-05-09 20:40:41 -07:00
Rich Geldreich
f83ee300a3 Adding more header checks 2019-05-09 18:09:47 -07:00
Rich Geldreich
85f4651def Fixing mipmap bug introduced from a fuzz test fix 2019-05-09 17:57:14 -07:00
Rich Geldreich
3347b17393 Another fuzz testing fix 2019-05-09 15:05:12 -07:00
Rich Geldreich
78e22234bd More transcoder fixes found during fuzz testing (I disabled all header/data CRC checking by setting BASISU_NO_HEADER_OR_DATA_CRC16_CHECKS to 1). 2019-05-09 14:43:13 -07:00
Rich Geldreich
d7b22fc404 Adding -fuzz_testing command line option, which disables the file data CRC16 check used by the -validate command. To fuzz testing using zzuf on Linux:
zzuf -d -c -s 1000000:2000000 ./basisu -validate -fuzz_testing kodim23.basis
2019-05-09 12:43:59 -07:00
Rich Geldreich
c7e14a97fa - Fixing minor block artifacts on pure 2 color B&W blocks when transcoding to BC1/BC7. This was caused by the ETC1S blocks using extreme ETC1S settings: codetable 7 (the one with the largest intensity deltas), using blocks with selectors that took up the full range (0-3), but the blocks only actually used the two outlier colors (0 and 3 only). The ETC1S->BC1/BC7 table based format conversion system doesn't realize that only the outlie colors were going to be used (i.e. not all 4 colors, just the outer 2), and so the quality of the transcoded block suffered because pure black could not be mapped. In BC7 mode, we now switch to pure BCT (block truncation coding) for any blocks with <= 2 unique colors, independent of their selectors.
- 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
2019-05-09 10:44:38 -07:00
Rich Geldreich
d699c819f7 Moving g_hamming_dist[] array from transcoder to encoder (it's never used by the transcoder).
Adding remarks to basisu_file_header.h
2019-05-08 20:01:35 -07:00
Rich Geldreich
d2f1594efb Removing old test code 2019-05-07 17:02:06 -07:00
Rich Geldreich
130eb9f115 Major compression performance/quality improvements, for a 15-35% or so decrease in file size for the same Y PSNR/SSIM. The basis file format has changed due to these optimizations.
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.
2019-05-07 15:52:54 -07:00
Rich Geldreich
33996b1a5f Important: Changing the Basis file version, so any existing files will need to be recompressed!
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.
2019-05-02 16:09:11 -07:00
Rich Geldreich
7cdf6fc0be Removing some unused/old code from transcoder 2019-05-01 20:54:22 -07:00
Rich Geldreich
7a727fb31c ETC1S->DXT5A transcoding bugfix on solid color blocks
Adding development messages support
Adding a few new transcoder get methods to help with creating C-style wrappers
2019-04-30 20:01:39 -07:00
Rich Geldreich
16c9e35c45 Removing detex dependency
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.
2019-04-30 13:50:01 -07:00
Rich Geldreich
bd7d786a8a Initial checkin 2019-04-29 18:53:00 -07:00