[X3D-Public] X3D differences with underlying render layers

Don Brutzman brutzman at nps.edu
Wed Nov 4 14:11:59 PST 2009

based on interesting lunch discussions with John and others here at the
W3C TPAC meeting, i added the following slide to our wiki.  comments welcome.

_Differences with underlying render layers_

- OpenGL, DirectX, others are used as render layers for output o
	X3D player which parses .x3d XML files and draws them

- Unlikely that all browsers will implement the same render layer
	(OpenGL != DirectX)

- A Canvas3D layer might be helpful to unify calls to the underlying render
	layer - but how will it evolve over time?

- Not clear that Web authors are clamoring for ability to program low-level
	OpenGl (or similar) source code in Javascript, such models are not
	interoperable or composable

- X3D avoids these problems as a declarative scene-graph language available
	in XML

all the best, Don
Don Brutzman  Naval Postgraduate School, Code USW/Br           brutzman at nps.edu
Watkins 270   MOVES Institute, Monterey CA 93943-5000 USA  work +1.831.656.2149
X3D, virtual worlds, underwater robots, XMSF  http://web.nps.navy.mil/~brutzman

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