Scaler

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Back in the original days of DOS, games ran on specific resolutions on CRT monitors (and occasionally televisions). Limited hardware required these games to run on what is today considered extremely low resolutions. A Scaler is like a filter, that reprocesses the emulated screen before it is drawn on the physical monitor, and enables old games to take on a slightly updated look (or stylized look).

Examples

These screen shots (of Doom) represent a small section of the full game screen, and have been blowup 200% to better show how the image is being altered. Some effects are more subtle or visible depending on the range of colors displayed on the screen at individual moments.

Scaler Example
normal2x

normal3x

Error creating thumbnail: Unable to save thumbnail to destination
advmame2x

advmame3x

Error creating thumbnail: Unable to save thumbnail to destination
hq2x

hq3x

Error creating thumbnail: Unable to save thumbnail to destination
2xsai
Error creating thumbnail: Unable to save thumbnail to destination
super2xsai
Error creating thumbnail: Unable to save thumbnail to destination
advinterp2x

advinterp3x

Error creating thumbnail: Unable to save thumbnail to destination
tv2x

tv3x

Error creating thumbnail: Unable to save thumbnail to destination
rgb2x

rgb3x

Error creating thumbnail: Unable to save thumbnail to destination
scan2x

scan3x

Error creating thumbnail: Unable to save thumbnail to destination