X3D Multitexture

2013-04-24T16:10:04Z

Michalis: /* Example Scenes for Testing */

X3D Multitexture needs a complete review of current capabilities to ensure that proper support is required.

== X3D Specification and Possible Technical Issues ==

Multitexture capabilities are defined in the [http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/texturing.html Texturing Component] of the [http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/Architecture.html X3D Specification].

* [http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/texturing.html#MultiTexture MultiTexture]
* [http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/texturing.html#MultiTextureCoordinate MultiTextureCoordinate]
* [http://www.web3d.org/files/specifications/19775-1/V3.3/Part01/components/texturing.html#MultiTextureTransform MultiTextureTransform]

== Technical problems and issues ==

* Dave Arendash has posted several times on specification deficiencies and [http://web3d.org/pipermail/x3d-public_web3d.org/2013-April/002384.html Need good multitexture example]

* Michalis Kamburelis has posted a detailed list of [http://castle-engine.sourceforge.net/x3d_implementation_texturing.php#section_multi_texturing_spec_problems Problems with existing X3D MultiTexture specification] based on implementing these capabilities in the [http://castle-engine.sourceforge.net Castle Game Engine]

* Yvonne Jung reports
Having multiple textures for shaders is possible, but the compositing modes defined in the spec
basically exactly map to some around >12 year old GL extensions from the pre-shader times.
So, no, it won't supported in that way.

* Timo reports that X3DOM can use a shader approach:
** [http://x3dom.org/x3dom/test/functional/commonSurfaceShader01.xhtml commonSurfaceShader01.xhtml]
** [http://x3dom.org/x3dom/test/functional/commonSurfaceShader02.xhtml commonSurfaceShader02.xhtml]
** A bump mapping example with multitextures: [http://x3dom.org/x3dom/example/x3dom_composedShader.xhtml x3dom_composedShader.xhtml]

== X3D Players Implementing Multitexture Capabilities ==

[[Player support for X3D components]] summarizes currently known capabilities for all players and all components

BS Contact

Instant Reality

X3DOM
* MultiTextureNodes are part of the [http://www.x3dom.org/?page_id=158 X3DOM HTML-Profile]

== X3D Authoring Tools Implementing Multitexture Capabilities ==

[[Tool support for X3D components]] summarizes currently known capabilities for all authoring (and conversion) tools and all components

== Example Scenes for Testing ==

* Castle Game Engine has posted a number of [http://castle-engine.sourceforge.net/demo_models.php VRML / X3D demo models]. Inside texturing_advanced/ subdirectory there are a number of multi-texturing examples (mostly in classic encoding) in multi_tex_* files.

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X3D Multitexture