VkNeo: Open-Source Doom 3 Now Has A Vulkan Renderer

[phoronix]

Phoronix: VkNeo: Open-Source Doom 3 Now Has A Vulkan Renderer

A few days back I wrote about an open-source Vulkan renderer coming for Doom 3, yes, the classic id Software video game. That Vulkan renderer for the id Tech 4 engine is now available...

http://www.phoronix.com/scan.php?page=news_item&px=Vulkan-Doom3-Available

[log0]

The 600 KLOC is the whole source I think.

The Vulkan bits are a few KLOC in neo/renderer/Vulkan, plus the shaders.

[Michael]

The 600 KLOC is the whole source I think.

The Vulkan bits are a few KLOC in neo/renderer/Vulkan, plus the shaders.

Whoops yeah, updated it. Didn't see that he didn't fork from the open Doom 3 code but did an entire commit. Anyhow, now that I've had some coffee in me at 4am:

[michael@f26-michael Vulkan]$ wc --lines *
585 Allocator_VK.cpp
157 Allocator_VK.h
727 BufferObject_VK.cpp
488 Image_VK.cpp
59 qvk.h
1955 RenderBackend_VK.cpp
387 RenderDebug_VK.cpp
1101 RenderProgs_VK.cpp
233 Staging_VK.cpp
82 Staging_VK.h
5404 vma.h
11178 total

[uid313]

It's too bad the Doom 3 engine for some reason didn't become so popular.

Lots of games use a beefed up Quake, Quake II or Quake III Arena engine, but it doesn't seem much adopted the Doom 3 engine.
I don't know, maybe some of the old beefed up Quake engines are better than the Doom 3 engine?

It would be nice if the open source community had a well-maintained modern game engine.

[omer666]

The fact is that DooM 3's modding community wasn't as big as Quake I/II/III, which explains why much less developers use this engine for open source project. RBDooM3 and all its enhancements - including HL2-styled soft shadows - would be a really good basis for future game development, but developers must get accustomed to it first.

[L_A_G]

It's too bad the Doom 3 engine for some reason didn't become so popular.

Seeing how Epic had finally gotten it's third party licensing going pretty well and id Tech being somewhat difficult to work (GoldSrc was a hard fork for a reason) with it was more or less to be expected that Unreal Engine would be the goto engine for AAA developers wanting to license a featured and well supported third party engine. My understanding is that id Tech refused to license the engine to anyone before Doom 3 got released and when it got delayed developers just licensed UE 2 or 3. Then there's also the fact that the engine scaled to lower end hardware pretty badly with it's per-pixel lighting, essentially making it a "Crysis before Crysis" of sorts.

[birdie]

It's too bad the Doom 3 engine for some reason didn't become so popular.

Lots of games use a beefed up Quake, Quake II or Quake III Arena engine, but it doesn't seem much adopted the Doom 3 engine.
I don't know, maybe some of the old beefed up Quake engines are better than the Doom 3 engine?

It would be nice if the open source community had a well-maintained modern game engine.

It absolutely sucked in regard to rendering wide open spaces. Also, as a generic renderer it also sucked immensely. It was an engine specifically for narrow corridors of the UAC facility at Mars. The first more or less all-purpose engine from idSoftware is idTech 6 but it's at least 5 to 10 years away from being open sourced.

Seeing how Epic had finally gotten it's third party licensing going pretty well and id Tech being somewhat difficult to work (GoldSrc was a hard fork for a reason) with it was more or less to be expected that Unreal Engine would be the goto engine for AAA developers wanting to license a featured and well supported third party engine. My understanding is that id Tech refused to license the engine to anyone before Doom 3 got released and when it got delayed developers just licensed UE 2 or 3. Then there's also the fact that the engine scaled to lower end hardware pretty badly with it's per-pixel lighting, essentially making it a "Crysis before Crysis" of sorts.

Pretty much no one wanted to license it back then. UE3, though it lacked stencil shadows, was a much better engine overall.

[eydee]

With default settings, now it runs locked at 60 fps, instead of being locked at 60 fps.

[mulenmar]

The first more or less all-purpose engine from idSoftware is idTech 6 but it's at least 5 to 10 years away from being open sourced.

idTech 6 will never be open-sourced, mark my words. It's Bethesda's tech now.

[Guy1524]

idTech 6 will never be open-sourced, mark my words. It's Bethesda's tech now.

Unfortunately. you are 100% right