apply fast track to fast up the image rasterization.
only shifted image doesn't need to have the matrix-transform computation,
we can avoid it by just shifting offset xy by simple caculating.
@Issue: https://github.com/Samsung/thorvg/issues/206
current image interpolation method is a bit awkward,
because xy scale different scale factor is not allowed.
we must improve the algorithm,
but now considering floating point precision,
we allow the interpolation by less ratio floating fraction.
To preserve the naming convention function '_rasterTranslucentImageRle'
is reanmed to '_translucentImageRle'. The '_rasterTranslucentImageRle'
function is though created - it checks the composition method and calls
the corresponding function. Missing functions are marked, but not implemented
(separate commit).
This patch introduces _STRAIGHT colorspaces (ABGR8888_STRAIGHT and
ARGB8888_STRAIGHT) whose colors are un-alpha-premultiplied. Unmultiplicated
colors are especially needed for wasm thorvg loader and svg2png / tvg2png.
Only C version now.
@issue: #791
Both functions implemented using 128-bit registers.
avxRasterTranslucentRect is around 5 times faster than cRasterTranslucentRect (i7-8700 CPU - Coffe Lake)
Changes:
Added neonRasterTranslucentRect implementation. Rendering was tested on
32 lottie fiels. Without neon ~ 18.1 FPS was measured. With neon ~ 20.1
FPS was measured.
Separate simd implementation by files to maintain them easier.
Now we have avx, c, neon version implementation base,
we can add implementations to them.
Changes:
- Prepare neon verison of ALPHA_BLEND API.
- Use ALPHA_BLEND_NEON in _translucentRle
Notes:
- _translucentRle with neon support reduces execution time of this
function ~ 300 % (measured on uint32_t 400 x 400 buffer).
- API was tested on ARMv7l device with GCC 9.2 based toolchain. Results
on other devices could be different.
* Apply bilinear interpolation to images
Apply bilinear interpolation when drawing images with transformation
If the mapped coordinate value is a floating point value,
bilinear interpolation is performed using adjacent pixel values.
Interpolation is not performed in cases when the color values to beinterpolated
are the same or scale down case.
We can replace the system logger method by changing single line print source in common,
This also helps to remove the THORVG_LOG_ENABLED macro from each use-cases.
TVGLOG(): To print the hint & tip messages for users.
TVGERR(): To print the error message for debugging.
@Issues: https://github.com/Samsung/thorvg/issues/36
The translucent rastering function is split into 3 other (instead of if/else statement).
An additional function is introduced to decide which one of the 3 should be called.
This refactoring is done to preserve the convention used for all other rastering functs.
The translucent rastering function is split into 3 other (instead of if/else statement).
An additional function is introduced to decide which one of the 3 should be called.
This refactoring is done to preserve the convention used for all other rastering functs.
