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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Marcus <m.delete@this.bitsnbites.eu>
Newsgroups: comp.arch
Subject: Got Quake 2 running on my MRISC32 FPGA computer
Date: Mon, 16 Dec 2024 00:32:31 +0100
Organization: A noiseless patient Spider
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Some progress...

Earlier this year I spent some time porting Quake 2 to my MRISC32 based
computer. It required some refactoring since Quake 2 used a modular
rendering and game logic system based on dynamically loaded libraries
(DLLs). My computer isn't that fancy, so I had to get everything
statically linked into a single executable ELF32 binary (and the
Quake 2 source code didn't support that at all).

My patched source code: https://gitlab.com/mbitsnbites/mc1-quake2

When I finally got a working build, it only worked in my simulator but
not on my FPGA board, so I dropped the effort.

Yesterday, however, I went and bumped my GNU toolchain to GCC 15.x and
fixed a few bugs in my MRISC32 back end, and lo and behold, the binary
actually started working on the FPGA (not sure if it was a compiler bug
or if it's a CPU implementation bug that got hidden by the compiler
update).

Video: https://vimeo.com/1039476687

It's not much (about 10 FPS at 320x180 resolution), but at least it's
progress.

/Marcus