[x3d-public] RenderedTexture support

[John Carlson]

I can confirm it looks like that in gmail on Android 8.1 Nexus 6p.

On Jan 15, 2018 8:28 PM, "Andreas Plesch" <andreasplesch at gmail.com> wrote:

> Hi Don,
>
> thanks for your response. Here is a first round of support links.
>
> http://www.xj3d.org/extensions/render_texture.html
>
> https://castle-engine.sourceforge.io/x3d_implementation_texturing_
> extensions.php#section_ext_rendered_texture
>
> Castle does not seem to have ComposedCubeMap or GeneratedCubeMap
>
> http://doc.instantreality.org/documentation/nodetype/RenderedTexture/
> was the template for the x3dom node.
>
> I suspect freeWrl supports imagecubemaps, probably composedcubemaps,
> only perhaps generatedcubemaps and renderedtexture.
>
> There are good screen capturing web browser extensions which can
> produce small and large animations, example gif attached.
>
> All the best,
> -Andreas
>
>
> On Mon, Jan 15, 2018 at 7:20 PM, Don Brutzman <brutzman at nps.edu> wrote:
> > Thanks for the analysis and suggestion.  No this node has never been
> > proposed for use in X3D.
> >
> > I searched and found documentation at
> >
> >         X3DOM documentation: Node: RenderedTexture
> >         https://doc.x3dom.org/author/Texturing/RenderedTexture.html
> >
> > "This extension provides the ability to dynamically render a partial
> > scenegraph to an offscreen texture that can then be used on the geometry
> of
> > a node. This can be used in many different ways such as creating mirror
> > effects, inputs to shaders etc. The purpose of this component is to
> provide
> > for extended visual effects, but not the complete form of offscreen
> > rendering and buffers that would be available to lower-level rendering
> > APIs."
> >
> > The fields are quite diverse and utilize multiple parts of a scene.  Some
> > further composition might be needed, worth closer scrutiny.
> >
> > It is certainly interesting to expose this kind of functionality to scene
> > authors.  If rendered results might be saved to a file, then it could
> also
> > increase options for interactions within HTML pages.
> >
> > The interpupillary distance field looks like something we would defer to
> X3D
> > v4.1 for Mixed Augmented Reality (MAR) VR/AR applications.
> >
> > It would be great if someone wanted to lead the effort to add this node,
> and
> > perhaps closely related nodes.
> >
> > On 1/16/2018 7:39 AM, Andreas Plesch wrote:
> >>
> >> Dear group,
> >>
> >> x3dom has a RenderedTexture node which very useful. Prompted by a
> >> x3dom-user list question, I started to think about using
> >> RenderedTextures as faces for a ComposedCubeMapNode which is also
> >> available in x3dom albeit only for ImageTexture sources.
> >>
> >> Although I first thought it is technically difficult due to webgl
> >> limitations, after deep diving it turned out that there is a way to
> >> efficiently use gl textures (generated for RenderedTexture) as faces
> >> for gl cube map textures (using gl.copyTexImage2D()).
> >>
> >> So I am developing in my cubemap branch of x3dom the ability for
> >> ComposedCubeMapNode to use RenderedTexture which can be updated per
> >> frame, for dynamic mirror effects and probably other uses. Here is an
> >> example:
> >>
> >>
> >> https://rawgit.com/andreasplesch/x3dom/cubemap/
> test/regression-suite/test/cases/cubemap/colorcube.html
> >>
> >> It more or less works but before I go further I would like to know how
> >> other browser approach dynamic cube maps from a high level. There is
> >> also the x3d GeneratedCubeMapNode which is intended for this effect.
> >> So one question would be which players actually implement a
> >> GeneratedCubeMapNode.
> >>
> >> There are quite a few x3d browsers which have a RenderedTexture node.
> >> Do they allow using it with ComposedCubeMap ?
> >>
> >> A big question is how recursive mirror in mirror are handled.
> >>
> >> Is a RenderedTexture node a target for v.4 ?
> >>
> >> Any feedback much welcome,
> >>
> >> Andreas
> >>
> >
> >
> > 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 graphics, virtual worlds, navy robotics http://faculty.nps.edu/
> brutzman
>
>
>
> --
> Andreas Plesch
> Waltham, MA 02453
>
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