Just got back from SIGGRAPH a couple days ago. This year's unofficial technical theme was "the year of general purpose computing on GPUs (GPGPUs)". This got me thinking about how the CPU controlling the GPU is like a server and client communicating over a network. Just like giving the user a high quality, low latency experience means moving computation to the client, getting better graphics performance means moving computation to the GPU. What is interesting is that the programming model for GPUs is relatively standardized, and is based on functional programming principals that avoid side effects (which is what makes massive parallelism possible.) They define transformations of some input data to some output data.
So my idea is that in VOS, one could associate a property value with a "property shader" which defined a transformation of that data. This could include typical graphics functions (vertex shaders, fragment shaders) but also be applied further up the graphics pipeline, for example to interpolate the world position of a moving character based on the last know position and some time step, or render effects like speech bubbles. The latter case is interesting because it splits up the event into a semantic part (the text message being communicating) and a presentation part (the shader that draws it). The interesting thing about GPUs that I didn't realize until last week is that they have been abstracted behind a virtual machine model; this means moving shader programs around the network in source or bytecode form is realistic since it will be compiled to the native architecture on the fly. The upcoming OpenCL ("Open Compute Library" or "Open Computing Language") is interesting since it's an attempt to standardize the CPU/GPU interface backed by the Khronos group (the same people that maintain the OpenGL spec.) All that said, VOS is pretty far away from actually trying out these ideas, but I wanted to throw the idea out there. [ Peter Amstutz ][ [EMAIL PROTECTED] ] [EMAIL PROTECTED] [Lead Programmer][Interreality Project][Virtual Reality for the Internet] [ VOS: Next Generation Internet Communication][ http:// interreality.org ] [ http://interreality.org/~tetron ][ pgpkey: pgpkeys.mit.edu 18C21DF7 ] _______________________________________________ vos-d mailing list firstname.lastname@example.org http://www.interreality.org/cgi-bin/mailman/listinfo/vos-d