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doc/hook: Update documentation about gfx scaling

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icex2 2021-03-19 23:42:54 +01:00
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doc/hook/hook.md
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@ -260,4 +260,12 @@ only the game run in that session. A good reference for this might be the variou
If you have a multi-monitor setup, things are getting quite complicated. Therefore, we are not covering this in here.
Also note that if you want the game to render at a higher resolution than its defined one, e.g. 640x480, this is not
possible right now. The output you get from the frame buffer will always be its native resolution.
possible right now. The output you get from the frame buffer will always be its native resolution.
### The game window is small and the 4:3 games are stretched when full screen on modern widescreen displays
On supported games, you can change the option `gfx.scaling_mode` in the `hook.conf` file to enable different pre-defined
scaling modes. Especially for the SD 640x480 4:3 games, this allows you to upscale the rendered output to a widescreen
display resolution while keeping the aspect ratio (pillarbox).
Note: This does not change the enhance the image quality. It just uses the GPU to interpolate the lower resolution
output and stretches it to the target surface area.