[X3D-Public] PixelTexture render problems in major browsers

[Don Brutzman]

There is a problem with PixelTexture rendering in most of the major browsers.
Of five tested, only Xj3D and FreeWrl seem to get this simple example correct.

<PixelTexture image='2 2 3 0xFF0000 0xFFFF00 0xFFFF00 0xFF0000'/>

which means
	pixel width  2
	pixel height 2
	color depth  3 (RGB values)

as shown in
http://www.web3d.org/x3d/content/examples/ConformanceNist/Appearance/Appearance/pixeltexture.x3d
http://www.web3d.org/x3d/content/examples/ConformanceNist/Appearance/Appearance/pixeltexture.html
http://www.web3d.org/x3d/content/examples/ConformanceNist/Appearance/Appearance/_viewpoints/pixeltexture.x3d._VP_Front%20View.png

would have the PixelTexture produce an image file like the first one
attached: RedYellowCheckerboard.png

However BS Contact, Instant Reality and Octaga all produce a scene
looking like the second snapshot: PixelTextureFlawedRendering.png

This is such a simple PixelTexture that it appears clearly to be a
flaw in each browser.  Possibly it is an unreported deficiency or
lack of clarity in the X3D Specification, however.
http://www.web3d.org/x3d/specifications/ISO-IEC-19775-1.2-X3D-AbstractSpecification/Part01/components/texturing.html#PixelTexture

Can each of the browser companies address this issue please?  TIA.

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  +1.831.656.2149
X3D, virtual worlds, underwater robots     http://faculty.nps.edu/brutzman

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