It could have also been reading past array bounds of a global variable, but shuffling around the variables I modified in my PRĪlso did nothing. Since it started happening after an unrelated change, I suspected that some code might be reading past array boundsĪnd interpreting unrelated variables as color however, a quick check with page heap proved this not to be the case. That doesn’t help much, though – I identified the draw but not the reason why it’s miscolored. It didn’t take long to find a fullscreen draw whoseĬolors correspond to the artifact visible in-game: Since it’s a graphical issue, I fired up PIX and inspected the frame. Was glitched, but… it displayed a different color: A Release version with optimizations disabled This turned out to be true for my PR too – the version compiled with Visual Studio 2017 did not have this artifact.Įven more curiously, neither did the Debug version compiled with Visual Studio 2019. To verify this properly you need to use the VS2017 build. Using a VS2019 build will produce a green overlay screen in a similar way yellow to an overlay screen. I didn’t know how it is possible so I assumed I introduced a regression, but then RadWolfie, one of the main Cxbx-Reloadedĭevelopers, dropped a very important piece of information: It should not be yellow at all.Īt the same time, I was told that this is some old bug that was resolved a while ago, and apparently, it came back. Sure enough, with my PR the game looked hopelessly broken: I could not push a change that fixes the game I care about at the cost of breaking others, so I decided to look into it. That one of my changes breaks another game – Star Wars: Knights of the Old Republic. Things were going smoothly until I got a report Getting the game from an unbootable state to very close to playable in around one week. My mini-goal was to get a particular NASCAR game working, and I succeeded in that,
Fixing a completely random bug in Cxbx-Reloaded - Star Wars: KotORįor the past two weeks, I’ve been fixing various issues in Cxbx-Reloaded, the original Xbox emulator.
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