[x3d-public] Background static image and dds

[Andreas Plesch]

X3DOM currently has two useful but not spec. compliant features for its
Background node.

A) support for static, single image background

If only a backUrl image is provided, it is used as static backdrop which
stays fixed, eg. is not a part of a cube map texture.
The same effect can be achieved with web page css styling, although
sometimes it is advantageous to have a static background rendered with gl.

B) support for cubemaps in dds format

dds is a popular texture format which is well defined by MS:
https://docs.microsoft.com/en-us/windows/win32/direct3ddds/dx-graphics-dds
dds has built in support for cubemaps and is compact and portable.
x3dom understands dds format for an image provided for a cube map.
Support for additional texture formats may be out of scope for X3D. There
may be other Mantis reports on texture formats.

Would it make sense to consider these features for specification ?

-Andreas



-- 
Andreas Plesch
Waltham, MA 02453
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