Rather than aiming for extremely high accuracy,
a compromise can achieve with better performance.
This modification helps prevent unnecessary image rotation.
issue: https://github.com/thorvg/thorvg/issues/2265
Adjusted the sampling position basis by -0.5 pixel
to enhance edge line interpolation quality.
This change addresses an issue with the image up-scaling process,
resulting in clearer and more accurate visuals.
issue: https://github.com/thorvg/thorvg/issues/1949
Previously, the logic was set to halt rendering when any part of the paints,
particularly bitmap-based images, failed to render.
This update modifies the behavior to continue drawing the scene,
allowing for the successful rendering of other elements.
issue: https://github.com/thorvg/thorvg/issues/1951
Adjust the sampling count according to the scale ratio.
This significantly improves performance
while making it hard to recognize any loss in image quality.
Lottie example performance has improved by 15%.
Some systems such as micro-processor might not support
the thread feature on the system.
Enhance the portability by compiling the thorvg with toggling the
threading depepdency through the build option.
For this, thorvg newly introduced the internal Key/ScopedLock abstraction
for transparent thread-locking dependnecy.
To turn off the thread feature, please use the next build option:
$meson setup build -Dthreads=false ...
Note that, the thread feature is enabled in default.
Turning off the thread feature could reduce the binary size by 7kb.
issue: https://github.com/thorvg/thorvg/issues/1900
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
Unified common logic for scaled image raster operations,
Avoid on-spot pixel computation as possible.
Tested on local machine (single thread)
Lottie: 0.057s -> 0.053s (-0.004s)
The color conversion is supposed to take into account the differences between
straight alpha premultiplied color and pre-multiplied alpha color.
The previous logic does not perfectly cover these conditions.
The problem was occured in the thorvg viewer with a jpeg bgra format.
