Scaling pixelgraphics is a pain! Don't understand me wrong, I really mean scaling to nativ monitor fullscreen while preserving the aspect ratio.
I write this post, because most indie games start in window (only) mode or do a wrong aspect ratio when scaled. It also hard to find dedicated informations how to solve this issues.
Here are some hints, how to scale right to fullscreen
- Of couse, if you want to draw pixelgraphics, you always choose a low resolution to avoid to much work!
- If you want to scale pixel related graphics you want to choose nearest filter to avoid smoothing!
- If you work with pixelgraphics you don't want to use the build-in monitor scaling!
- If you work with pixelgraphics you don't know, if the user configured his monitor for correct aspect ratio.
A. Most used Monitor resolutions:
1. 1920x1080 16,72 % - 1,77
2. 1366x768 15,71 % - 1,77
3. 1280x1024 10,90 % - 1,25
4. 1680x1050 8,90 % - 1,60
5. 1024x768 8,59 % - 1,33
6. 1280x800 8,08 % - 1,60
7. 1440x900 6,75 % - 1,60
8. 1600x900 4,60 % - 1,77
9. 1920x1200 3,34 % - 1,60
10. 1360x768 1,88 % - 1,77
B. Used aspect ratios scaled down by integer factors 2 or 3
~680x384 (1920x1080, 1600x900, 1366x768, 1360x768) - 1,77 (16:9)
~640x400 (1920x1200, 1680x1050, 1440x900, 1280x800) - 1,60 (16:10)
~640x512 (1280x1024) - 1,25 (5:4)
~512x384 (1024x768) - 1,33 (4:3)
512x384 (for pixelgraphics this is enough work)
- Find the lowest supported resolution!
- So, make the nativ gameresolution 512x384 (draw everything of the game into this area)
- Now you are able to scale the gamescreen by integer numbers 2 or 3 depending on the nativ monitor resolution! If you have a monitor at 1920x1200, you can scale by 3 because 512*3x384*3=1536x1152. If your monitor has a nativ resolution of 1920x1080 you can only scale by 2 (512*3x384*3=1024x768).
- Set the nativ monitor resolution, scale your gamescreen by the choosen factor and center the gamescreen.
nativ monitor 640x480 (unscaled gamescreen 512x384)
nativ monitor 1600x1000 (scaled gamescreen by 3*512 x 3*384) (click on the image!)
Development Log: http://forums.tigsource.com/index.php?topic=24705.0
if you have questions feel free to ask me.