[Mesa-dev] Bug introduced with Mesa 18.0.0: Star Trek Voyager Elite Force shadow glitches

[Roland Scheidegger]

I don't see any shadows at all with the 17.3.7 video?
Whereas the 18.0.0 one look quite bogus to me, but I think shadows are
known to be glitchy with id tech 3?
It should be possible to tweak shadows via cg_shadow (0-3),
r_stencilbits 8 might be necessary for some modes, r_dynamiclights 0
might also switch them off, if it works the same as with quake 3...

Roland


Am 17.09.2018 um 18:55 schrieb Federico Dossena:
> Hi,
> 
> I'm using Mesa (specifically Gallium on LLVMPipe) to run an old game
> called Star Trek Voyager Elite Force.
> 
> I'd like to report a bug introduced with version 18.0.0 and still
> present in Mesa master that completely breaks the shadows in this game.
> 
> I don't know how Mesa works internally so I'll just attach 2 videos:
> 
>   * Mesa 17.3.7: shadows work normally:
>     https://drive.google.com/open?id=1UOD4NqEuL12FrZfvukkP5r83dyjTd3E2
>     <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D1UOD4NqEuL12FrZfvukkP5r83dyjTd3E2&data=02%7C01%7Csroland%40vmware.com%7C626d7d56b64147bd7efb08d61d4d7367%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636728615875582416&sdata=fuoAhfMCul4pkDVEJTfzWf6yCcFzMXi6ZOhBUxdhkWc%3D&reserved=0>
>   * Mesa 18.0.0 and newer: shadows are broken:
>     https://drive.google.com/open?id=10cYYciVfLD3fCHpoOrp4cRTGj_GTuh2j
>     <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D10cYYciVfLD3fCHpoOrp4cRTGj_GTuh2j&data=02%7C01%7Csroland%40vmware.com%7C626d7d56b64147bd7efb08d61d4d7367%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636728615875582416&sdata=5pkWQNeMvqxSBngWv3Lx60U%2BYuQnR9d9XndOmwPa4Bs%3D&reserved=0>
> 
> The game uses the id3 engine so I assume other games are also affected,
> although I haven't tested it.
> 
> For what it's worth, the proprietary AMD drivers have the same bug.
> 
> If you need the game for testing, please let me know.
> A demo is also available here:
> https://www.fileplanet.com/46986/40000/fileinfo/Star-Trek:-Voyager---Elite-Force-Demo
> <https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.fileplanet.com%2F46986%2F40000%2Ffileinfo%2FStar-Trek%3A-Voyager---Elite-Force-Demo&data=02%7C01%7Csroland%40vmware.com%7C626d7d56b64147bd7efb08d61d4d7367%7Cb39138ca3cee4b4aa4d6cd83d9dd62f0%7C1%7C0%7C636728615875582416&sdata=9hywO2LnYnGiq0yVPID1J4%2BsUMYrhXc2aC8mpAAQhac%3D&reserved=0>
> 
> 
> 
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