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ensiform avatar ensiform commented on July 20, 2024

The issue isn't the renderer. It's the fact that Q3A was compiled with really old compilers lol and modern compilers and SSE have changed handling of floating points and a loss in precision during intermediate calculations. (See below commit comments)

Fixed here: JACoders/OpenJK@60072ca

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 avatar commented on July 20, 2024

Oh, that was fast!
Thank you for your response, ensiform. You're really clever!
Hmm, so there is no chance to load those maps, when compiling a 64 bit exe? I use Cygwin (instead of MSVC). Using the values you refering to, and compiling with ARCH=x86_64 doesn't help.

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ensiform avatar ensiform commented on July 20, 2024

You won't be able to fix it without patching the engine as suggested. Modern hardware which is implied by 64-bit will always suffer from this issue. And modern builds with x86 will also suffer too most likely.

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ec- avatar ec- commented on July 20, 2024

>a loss in precision during intermediate calculations
I think that we have right opposite situation because old win32 binaries were compiled with /fp:fast option, while modern have /fp:precise - i.e. setting /fp:fast in project properties restores old behavior (at least on msvc2005 compiler and 32-bit builds)

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luisvalenzuelar avatar luisvalenzuelar commented on July 20, 2024

Excuse my noobness. Has this been fixed or not? One comment above suggests a fix in OpenJK but not sure whether this translates into ioq3 or not.

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