Pbuffers are problematic because it's an ancient feature that nobody cares about anymore.
I think Miklos made KOTOR work on radeonsi or r600. Marek On Mon, Sep 25, 2017 at 6:50 PM, Federico Dossena <dossenu...@gmail.com> wrote: > Hello everyone, > you may remember that a few months ago I was trying to fix KOTOR to work > with Mesa to use the Gallium llvmpipe software renderer. > > Well, it's been a while and I'm happy to see that things are a bit better > with Mesa 17.2. The game still crashes, but we're closer to fixing it. > > Here's what I found using 17.2.1: > With frame buffer effects and soft shadows the game crashes at the end of > loading; the crash is inside a function that amongst other things, generates > mipmaps for a texture used in a pbuffer (function at offset 2FB37D in my > exe). > The crash happens when gluBuild2DMipmaps is called, however doesn't seem to > be a null pointer like it was back in march: it's an access violation > alright but no longer a null pointer. So I think it's a different, hopefully > simpler, problem. > > Back in march, Miklòs Màté suggested that changing the checks for the pixel > format could fix the problem, and he was right; without those checks we > definitely got a step closer to fixing it. > > My first thought was to just NOP the entire section that generates mipmaps > and a bit of code later that uses it. The game no longer crashes, however it > displays nothing, but I can hear it running in background. So this is the > last issue! We're almost there! > > Now, I'm bothering you again because I think that at this point it's just a > problem with the texture format used there. The call to gluBuild2DMipmaps > uses LuminanceAlpha' as texture format as well as internal format (0x190a). > I tried changing it to RGB and RGBA just to try something, but that didn't > work because I guess the texture was already generated with another format. > > What could I do to investigate this further? And where should I look inside > Mesa if I wanted to say... force a specific texture format for pbuffers? > > I feel that we're very close to fixing this. Your help would mean the world > to me and the whole KOTOR community. > > Thank you ;) > > P.S. > This has nothing to do with mesa, but you should know that KOTOR is slowly > dieing. It is currently unplayable on Intel and AMD graphics, and recent > nVidia driver updates have introduced a glitch with transparencies (it can > be fixed, but still, no one can play KOTOR on modern hardware properly and > we have to keep old computers as dedicated "shrines" for KOTOR, that's why I > insist so much on Mesa) > > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/mesa-dev > _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev
