Comments (10)
Hi Saleck, could you be more specific: which game is pictured, and which other games have you noticed the same problem in?
This is likely not a general graphical bug in Boxer but a game-specific incompatibility, or indeed simply a bug in the original game(s) themselves that would manifest on original hardware. I need to know the particular games in order to diagnose the issue further.
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Hey :)
The game pictured is Sword of the Samurai. I compiled the Boxer and Boxer Standalone from source. The problem only seems to appear when running the game in Boxer Standalone. Running just a regular .boxer file does not create the problem.
I've also noticed the problem (but its not as noticable) in Wizardry 6, Genghis Khan 2 and The Elder Scrolls: Arena
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Ah ok, then this is indeed a glitch in Boxer itself. So you've built both Boxer and Standalone from the latest master, and it's only Standalone that's exhibiting the problem?
Also, which OSX and XCode version are you compiling this on? (This may make a difference as to which SDK it's compiled against.)
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I have noticed this too, and is a problem on normal Boxer as well. I have 10.10, but have noticed this as early as 10.8.
Games like Tie fighter Collectors CD, Sonekeep, Silpheed, Epic Pinball, The need for speed. Sometimes setting it to skip a few frames can help, but not always. To be honest It has been getting a little better lately with the latest code changes.
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By "normal Boxer" do you mean Boxer 1.3.2, or non-standalone builds of the 2.x branch?
This smells like a bug in the way Boxer handles "dirty" scanlines. DOSBox keeps a list of which lines in the framebuffer were drawn into by the emulated video hardware during the current frame, and Boxer checks that list to decide which regions of its OpenGL frame texture to update. (This optimisation avoids updating the whole texture for frames that only changed a small area of the framebuffer, which was a common optimisation for DOS games.) It looks like that check may be off by one in some situations.
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Oops good point, It's only a problem when compiling off the 2.x branch. 1.3.2 is fine.
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Ah well that narrows it down, that probably means it's a regression from when I rewrote the renderer's frame-texture-updating code.
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I'm running 10.10 and I compiled the code in XCode 6.1, the latest you can get.
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Commit 48c13ac disables the dirty check, forcing a full texture refresh for each frame. This appears to have eliminated the stuck-pixels problem, but please let me know if the problem persists.
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Thanks Alun, that works great!
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Related Issues (20)
- Can't compile the master 64 bit Boxer, help needed =( HOT 25
- Magic mouse buttin not working HOT 8
- 64 bit builds do not support joysticks HOT 13
- not running on 10.15 Catalina HOT 2
- Boxer Crashes under Parallels HOT 1
- save games not work since 64bit update ?! HOT 7
- Support compressed .boxer bundles or inner .harddisk containers.
- CD Audio is stuttering and making the game jittery in 64-bit build HOT 4
- Is Boxer a still active project? HOT 1
- Mac ARM (Apple Silicon)-native build HOT 5
- License file
- Active Fork? HOT 1
- Boxer fail to respond when opening .boxer packages on NFS share
- Boxer Bundler creating a non-working standalone HOT 2
- 2 Gamepads
- New version of Boxer coming? HOT 4
- PC booter games saving HOT 5
- Render non-latin characters HOT 1
- DDHidLib/DDHidLib.h File Not Found HOT 2
- Migrate to DOSBox's overlay drives
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