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diff --git a/thirdparty/msdfgen/CHANGELOG.md b/thirdparty/msdfgen/CHANGELOG.md new file mode 100644 index 0000000000..4b9a752650 --- /dev/null +++ b/thirdparty/msdfgen/CHANGELOG.md @@ -0,0 +1,82 @@ + +## Version 1.9 (2021-05-28) + +- Error correction of multi-channel distance fields has been completely reworked +- Added new edge coloring strategy that optimizes colors based on distances between edges +- Added some minor functions for the library API +- Minor code refactor and optimizations + +## Version 1.8 (2020-10-17) + +- Integrated the Skia library into the project, which is used to preprocess the shape geometry and eliminate any self-intersections and other irregularities previously unsupported by the software + - The scanline pass and overlapping contour mode is made obsolete by this step and has been disabled by default. The preprocess step can be disabled by the new `-nopreprocess` switch and the former enabled by `-scanline` and `-overlap` respectively. + - The project can be built without the Skia library, forgoing the geometry preprocessing feature. This is controlled by the macro definition `MSDFGEN_USE_SKIA` +- Significantly improved performance of the core algorithm by reusing results from previously computed pixels +- Introduced an additional error correction routine which eliminates MSDF artifacts by analytically predicting results of bilinear interpolation +- Added the possibility to load font glyphs by their index rather than a Unicode value (use the prefix `g` before the character code in `-font` argument) +- Added `-distanceshift` argument that can be used to adjust the center of the distance range in the output distance field +- Fixed several errors in the evaluation of curve distances +- Fixed an issue with paths containing convergent corners (those whose inner angle is zero) +- The algorithm for pseudo-distance computation slightly changed, fixing certain rare edge cases and improving consistency +- Added the ability to supply own `FT_Face` handle to the msdfgen library +- Minor refactor of the core algorithm + +### Version 1.7.1 (2020-03-09) + +- Fixed an edge case bug in scanline rasterization + +## Version 1.7 (2020-03-07) + +- Added `mtsdf` mode - a combination of `msdf` with `sdf` in the alpha channel +- Distance fields can now be stored as uncompressed TIFF image files with floating point precision +- Bitmap class refactor - template argument split into data type and number of channels, bitmap reference classes introduced +- Added a secondary "ink trap" edge coloring heuristic, can be selected using `-coloringstrategy inktrap` +- Added computation of estimated rendering error for a given SDF +- Added computation of bounding box that includes sharp mitered corners +- The API for bounds computation of the `Shape` class changed for clarity +- Fixed several edge case bugs + +## Version 1.6 (2019-04-08) + +- Core algorithm rewritten to split up advanced edge selection logic into modular template arguments. +- Pseudo-distance evaluation reworked to eliminate discontinuities at the midpoint between edges. +- MSDF error correction reworked to also fix distances away from edges and consider diagonal pairs. Code simplified. +- Added scanline rasterization support for `Shape`. +- Added a scanline pass in the standalone version, which corrects the signs in the distance field according to the selected fill rule (`-fillrule`). Can be disabled using `-noscanline`. +- Fixed autoframe scaling, which previously caused the output to have unnecessary empty border. +- `-guessorder` switch no longer enabled by default, as the functionality is now provided by the scanline pass. +- Updated FreeType and other libraries, changed to static linkage +- Added 64-bit and static library builds to the Visual Studio solution + +## Version 1.5 (2017-07-23) + +- Fixed rounding error in cubic curve splitting. +- SVG parser fixes and support for additional path commands. +- Added CMake build script. + +## Version 1.4 (2017-02-09) + +- Reworked contour combining logic to support overlapping contours. Original algorithm preserved in functions with `_legacy` suffix, which are invoked by the new `-legacy` switch. +- Fixed a severe bug in cubic curve distance computation, where a control point lies at the endpoint. +- Standalone version now automatically detects if the input has the wrong orientation and adjusts the distance field accordingly. Can be disabled by `-keeporder` or `-reverseorder` switch. +- SVG parser fixes and improvements. + +## Version 1.3 (2016-12-07) + +- Fixed `-reverseorder` switch. +- Fixed glyph loading to use the proper method of acquiring outlines from FreeType. + +## Version 1.2 (2016-07-20) + +- Added option to specify that shape vertices are listed in reverse order (`-reverseorder`). +- Added option to set a seed for the edge coloring heuristic (-seed \<n\>), which can be used to adjust the output. +- Fixed parsing of glyph contours that start with a curve control point. + +## Version 1.1 (2016-05-08) + +- Switched to MIT license due to popular demand. +- Fixed SDF rendering anti-aliasing when the output is smaller than the distance field. + +## Version 1.0 (2016-04-28) + +- Project published. |