The three specifications below apply.
Specification: https://www.w3.org/TR/SVG/paths.html#ArcOutOfRangeParameters
-
If the endpoint (x, y) of the segment is identical to the current point
(e.g., the endpoint of the previous segment),
then this is equivalent to omitting the elliptical arc segment entirely.
-
If either rx or ry is 0, then this arc is treated
as a straight line segment(a "lineto") joining the endpoints.
-
If either rx or ry have negative signs, these are dropped;
the absolute value is used instead.
resolved a corner case where assets were being attached
multiple times during scene building. This issue was causing
a significant performence drop in image animation
in certain scenarios.
XOR when the shape's direction property is set to a value of 2.
Currently, the direction property is expected to have
either 1 for clockwise or 3 for counterclockwise orientation.
Just found out the number 2 use-case...
Previously, multiple gradients within a single group
couldn't be accounted for during rendering.
This fix addresses the scenario by fragmenting the rendering context.
Each group must determine the stroking rendering contexts
and assess whether context switching has occurred.
Migrate the sequence from the root layer to all groups.
enable exceeding the range of normalized values in time remapping.
the issue came from a misunderstanding of the lottie spec.
issue: https://github.com/thorvg/thorvg/issues/1809
Introduced a dedicated mutex for each surface instance
to ensure safe sharing between the loader, renderer, and engine.
This enhancement allows for secure modification and access to bitmap data,
addressing potential concurrency issues.
Multiple Picture instances can now safely share a single loader instance,
optimizing performance.
This change builds upon the previous Loader Cache improvements:
ff6ea4b6c4
ttf is an industry standard format that is the most widely used
in the products. Now thorvg supports the basic features of
the font to supplement the text drawing.
The implementation is followed the ttf spec,
the covered features are:
- horizontal layouting with kerning.
- utf8 -> utf32 converted glyph drawing.
To use the feature, please enable ttf loader:
$meson -Dloaders="ttf_beta, ..."
@Issue: https://github.com/thorvg/thorvg/issues/969
We are introducing the FontLoader, which slightly differs
from the ImageLoader in terms of features. To adequately
support both, we have separated the loader functionalities
into FontLoader and ImageLoader. This allows us to optimally
adapt the LoadModule for each case.
The loader cache is applied to conserve memory.
If the input data is already present in loaders,
the loader cache will promptly return the active loader.
This results in a lot of memory savings for the duplicated resources.
binary diff: -400 bytes
There are some matting masking bugs observed,
Reverted the commit. We will revisit it later.
commit d37c500262
Author: Hermet Park <hermet@lottiefiles.com>
Date: Wed Oct 25 18:55:05 2023 +0900
lottie: introduced static layer cache.
lottie builder doesn't need to rebuild the layer object
if it has no any animation frame data.
That case, we can cache the layer scene in order to reuse it.
Tested on local machine (single thread):
- Lottie: appx. 2ms enhanced.
- Binary: +204
Currently, it assumes "ty":"gr" for the related shapes children,
which can be skipped since the children will be in the "it" scope.
Some Lottie data is missing the "ty":"gr" field,
and ThorVG couldn't display the content properly.
It can ignore it with the context understanding.
Previously, Picture::load(const char* data, uint32_t size, const std::string& mimeType, bool copy = false)
would return 'Success' even when the data is invalid.
This issue only occurred when the number of threads is set to 0.
../src/loaders/external_png/tvgPngLoader.cpp(110): warning C4244: '=': conversion from 'float' to 'uint32_t', possible loss of data
../src/loaders/external_png/tvgPngLoader.cpp(111): warning C4244: '=': conversion from 'float' to 'uint32_t', possible loss of data
../src/loaders/external_png/tvgPngLoader.cpp(112): warning C4244: '=': conversion from 'float' to 'uint32_t', possible loss of data
