Releases · Chlumsky/msdfgen

Improved BMP file output - support for BGRA (mtsdf mode), optimized size of grayscale files
- For builds without PNG support, BMP replaces TIFF as the default output format
Fixed incorrect output with asymmetrical distance range when inversion occurs due to winding correction (-guesswinding / -reversewinding) or scanline pass (-scanline)
The library now operates on bitmap section references (instead of contiguous bitmap references), which makes it possible to generate a distance field directly into a subsection of a larger bitmap or a bitmap with the opposite row ordering
Improved semantics of specifying Y-axis orientation (upward / downward)
Improved precision of cubic curve distance computation
Fixed a bug incorrectly adjusting convergent edge segments in shape normalization
Renamed options -guesswinding, -reversewinding, -keepwinding from -guessorder, ... for clarity (old names kept for compatibility)
Adjusted the Readme example shader to improve anti-aliasing in a rotated frame
Minor CMake fixes

Fixed a bug applying error correction incorrectly if shape's Y-axis is inverted (mainly affected SVG input)
Fixed error correction not being applied in the standalone executable in MTSDF mode with the -scanline option (default in non-Skia builds)
Minor CMake adjustments and warning fixes

Added the possibility to specify asymmetrical distance range (-arange, -apxrange)
Added the ability to export the shape into an SVG file (-exportsvg)
Edge coloring no longer colors smooth contours white, which has been found suboptimal
Fixed incorrect scaling of font glyph coordinates. To preserve backwards compatibility, the user has to enable the fix with an explicit additional argument:
- -emnormalize in standalone, FONT_SCALING_EM_NORMALIZED in API for coordinates in ems
- -noemnormalize in standalone, FONT_SCALING_NONE in API for raw integer coordinates
- The default (backwards-compatible) behavior will change in a future version; a warning will be displayed if neither option is set
Added two new developer-friendly export image formats: RGBA and FL32
-size parameter renamed to -dimensions for clarity (old one will be kept for compatibility)
generate*SDF functions now combine projection and range into a single argument (SDFTransformation)
Conversion of floating point color values to 8-bit integers adjusted to match graphics hardware
Improved edge deconvergence procedure and made sure that calling Shape::normalize a second time has no effect
Fixed certain edge cases where Skia geometry preprocessing wouldn't make the geometry fully compliant
The term "perpendicular distance" now used instead of "pseudo-distance" (PSDF instead of PseudoSDF in API)
Fixed a bug in savePng where fclose could be called on null pointer
Minor code improvements

Reworked SVG parser, which now supports multiple paths and other shapes - requires Skia
Major performance improvements due to inlining certain low-level classes
A limited version of the standalone executable can now be built without any dependencies
Fixed listFontVariationAxes which previously reported incorrectly scaled values
Fixed potential crash when generating SDF from an empty Shape
Fixed a small bug in the error correction routine
Errors now reported to stderr rather than stdout
All command line arguments can now also be passed with two dashes instead of one
Added -version argument to print the program's version
Shape can now be loaded from a pointer to FreeType's FT_Outline
Added hidden CMake options to selectively disable PNG, SVG, or variable font support
Added CMake presets
Other minor bug fixes

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

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

Releases: Chlumsky/msdfgen