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schuylermartin45 / seegol

Master's Thesis Project: Shoyler's Extremely Experimental Graphical Operating Library (SeeGOL)
https://shoyler.com/html/projects.html
MIT License
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Slideshow user program does not always completely clear the screen in QEMU #1

Closed schuylermartin45 closed 7 years ago

schuylermartin45 commented 7 years ago

At this point, I'm pretty sure this is an issue with QEMU, but when I draw an image with the slideshow program and change the size of the image, occasionally the last 10 scanlines of pixels do not clear and stick until you change the the image. Clear screen is called and works otherwise, so I think QEMU is doing something strange.

At least I hope I can blame it on the emulator.

schuylermartin45 commented 7 years ago

This does not appear to happen with the physical hardware. This also seems to happen less in QEMU with use of the "-vga std" flag.