The documentation on the SGI REX3 - the drawing engine on the XL series of boards for the Indy workstation - vaguely says that the bit lanes to write to the framebuffer are "implicitly specified by the write mask register", but I didn't quite understand until last night. (thread)
Without the duplication of lower-bit-depth colors or color indices, the end result is that the menu bar flashes wildly during camera movement, because it's swapping buffers but the menu has only been written to one of the two buffers.
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There are still some things to work out, like why the X/Y/Z arrows are miscolored, but it's already so much better than it was.
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Having said all that, I'm waffling on whether to commit and push what I've got so far, because I haven't yet thrown the full battery of SGI demos at my changes, and that will literally take hours.
Näytä tämä ketju
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