Am 01.03.2011 16:23, schrieb Brian Paul: > On 03/01/2011 04:18 AM, Blaž Tomažič wrote: >> On Mon, 2011-02-28 at 16:39 -0800, Brian Paul wrote: >>> On Mon, Feb 28, 2011 at 4:13 PM, Blaž Tomažič<blaz.toma...@gmail.com> >>> wrote: >>>> Hi Mesa developers, >>>> >>>> I am really interested in Gallium3D and I'm thinking about a project for >>>> my diploma (I think this is the same as bachelor's degree) on a computer >>>> university. I'm thinking about writing a Glide state tracker for >>>> Gallium3D. I know that Glide hasn't been used for a decade, but I think >>>> it would be relatively "easy" to implement an old 3D API and a great way >>>> to learn a part of Gallium3D on the way. >>>> >>>> Some old games (only Glide: Need for Speed 2; Glide and OpenGL: Unreal, >>>> Quake 2) used Glide API for rendering and Gallium3D could therefore >>>> accelerate them on newer hardware and more importantly, render them with >>>> nicer graphics instead of software rendering as is with some glide only >>>> games. I don't know if there were any Linux games, but Gallium3D works >>>> on Windows too if I'm not mistaken. >>>> >>>> So I have a few question for you: >>>> - How hard and how much work would be involved in implementing such an >>>> API? (Any help on implementing it would be welcomed and appreciated of >>>> course) >>>> - Are Glide to OpenGL wrappers a better solution because of changing >>>> nature of Gallium3D interface? (Personally I think they are, but I would >>>> like to work directly on Gallium) >>>> - Do you think this project would fit well in Gallium3D or do you have >>>> any other/better proposals for a project including Gallium3D? >>> >>> I don't mean to discourage you, but I this probably wouldn't be a very >>> good project. >>> >>> The Glide API and 3dfx hardware is lacking in a number of areas, >>> particularly shaders. Gallium was intended for newer hardware so it >>> wouldn't be a good fit for this older technology. >>> >>> I'm sure there are other projects you could do related to >>> OpenGL/gallium if that's where your interest lies. Other people on >>> this list might have some ideas. I could probably come up with a few >>> otherwise. What do you think? >>> >>> -Brian >> >> I know that Glide is an old technology and probably I should test this >> games if they even run on newer OSs. But still, Gallium supports OpenGL >> 1.x functionality and Glide is a subset of it. Fixed-pipe functionality >> is easily implemented with shaders so I think that it could be >> implemented. > > The issue isn't converting fixed-function GL rendering (e.g. 1.x > functionality) into shaders, it's converting Gallium shaders into > Glide/3dfx fixed-function.
But he was only talking about implementing a glide state tracker hence I can't see why he'd need to do that. So I think conceptually this would work just fine. Still, it might not be something terribly useful. For one, if you'd want to run this with windows, while gallium is OS-independent, the hw drivers surely are not. Hence you'd also need to write a d3d or ogl backend driver for gallium if you'd want it to run hw-accelerated with windows. Also, for this really old glide api, opengl wrappers are probably just fine - noone is going to write new glide apps anyway. Roland > > >> I agree that some other project using current technology would be much >> better. Even if Glide would be implemented for Gallium it would be of >> almost no use and there would be almost no purpose maintaining it. >> Nevertheless, I thought it would be a great way to learn Gallium and in >> the process contribute something small to the community. And then, when >> I would know more about Gallium, contribute something more useful maybe. >> >> Then Glide is not a good idea but I don't have any other. I'm open for >> any suggestions you and other list members might have then. > > Keith's debugger/diff driver is a great idea. > > -Brian > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
