Copyright (c) 2020 Przemysław Grzywacz nexather@gmail.com
This file is part of xbrzscale.
xbrzscale is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.
This tool allows you to scale your graphics with xBRZ algorithm, see https://en.wikipedia.org/wiki/Pixel-art_scaling_algorithms#xBR_family
The following external code is included in this repository:
- https://sourceforge.net/projects/xbrz/files/xBRZ/ - xBRZ implementation
The following dependencies are needed to compile xbrzscale:
- libsdl2-dev
- libsdl2-image-dev
On Windows said dependencies can be installed by doing the following:
- libsd12
- libsd12-image is done following the same process with this download instead
Under OSX they can be installed using macports
- port install libsdl2_image
- port install libsdl2
Some additional libraries are needed. I'm sure you'll figure it out.
If you need SDL1.2 support, check sdl1.2 git branch.
For Mac and Linux:
run make and you should end up with a binary called xbrzscale.
For Windows:
run mingw32-make -f Makefile-win and you should end up with a binary called xbrzscale.exe
`xbrztool scale_factor input_image output_image`
scale_factor- Controls how much your image should be scaled. It should be an integer between 2 and 5 (inclusive).input_image- Input image is the filename of the image you want to scale. Image format can be anything that SDL_image supports.output_image- Filename where the scaled image should be saved. The only supported format is PNG!
Please note I only tested the scaling on 32bit RGBA PNGs, I have no idea if this will work with 8bit indexed images.