Hi JS, Supporting OpenGL 2 + OpenGL 3 first sounds fine to me. We should however keep in mind future plans when designing :)
Sukender PVLE - Lightweight cross-platform game engine - http://pvle.sourceforge.net/ Le Thu, 26 Feb 2009 15:19:57 +0100, Jean-Sébastien Guay <[email protected]> a écrit: > Hi Sukender, > >> I was thinking that if OSG 3 would support these, then why not others (such >> as D3D)... > > OpenCL has an analogue API in Direct3D 11 which is called "compute > shader". OpenCL is made to work with OpenGL (share resources, buffers, > etc.) so as I understand it, you couldn't really use it with D3D. > > It's pretty much the same thing that happened for (graphical) shaders a > while back. There were vendor-specific APIs at first (assembly, Cg, ...) > and then there were ARB, GLSL and HLSL which are not vendor-specific but > are graphics-API-specific (for OpenGL, for Direct3D). For GPGPU it's the > same thing, NVIDIA has CUDA and ATI/AMD has Compute Abstraction Layer > (CAL), and soon OpenGL will have OpenCL and Direct3D will have Compute > Shader. > > Again an argument for the fact that both APIs are pretty much on the > same footing, after all they're just exposing features of the GPUs, sure > for some features one API will expose it faster than the other and > inversely but by the time a feature is mature both APIs are equivalent > in exposing it. > > About OpenCL: > > I think it will be (or should be, at least at the start) orthogonal to > OpenGL in OSG. So I think our work in the near-to-mid term is mostly > supporting OpenGL 2 + OpenGL 3. Later we might think of doing a > completely raytracing-based back-end that uses OpenCL, but OpenCL is > much more general than just raytracing, and I think exposing its > functionality at a low level, for any use, will be more of a priority > than building a rendering back-end for it into OSG. > > Sure, I'd like to try our simulators in a realtime raytracer, but I > think that's not a priority and is still a while off... :-) > > J-S _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
