[0.15.1] take_screenshot, black border on thin shots

[aaargha]

When using the take screenshot command parts of the result will just be a black border if the screenshot is "thin". It seems to happen if the resolution is less than 64 pixels in either direction.

Commands used to take pictures:

Code: Select all

/c game.take_screenshot{resolution={33,100}}
/c game.take_screenshot{resolution={33,33}}
/c game.take_screenshot{resolution={100,33}}
/c game.take_screenshot{resolution={64,64}}

[Harkonnen]

This appears to be some deep minor bug inside Allegro because --force-opengl solves the problem.