Hi,
Just a coment. Deprecate inmediate mode is also and advantage w.r.t. mobile
devices. OpenGL_ES does not implement inmediate mode since its first
version, and display lists are no supported since OpenGL_ES 1.1. So it will
be good for those starting with ES and OpenSceneGraph.
Cheers.
2013/6/4 Robert Osfield <robert.osfi...@gmail.com>
> Hi All,
>
> I have now taken the next step and added the following methods to
> osg::Array:
>
>
> /** Specify whether the array data should be normalized by
> OpenGL.*/
> void setNormalize(bool normalize) { _normalize = normalize; }
>
> /** Get whether the array data should be normalized by OpenGL.*/
> bool getNormalize() const { return _normalize; }
>
> /** Set hint to ask that the array data is passed via integer
> or double, or normal setVertexAttribPointer function.*/
> void setPreserveDataType(bool preserve) { _preserveDataType =
> preserve; }
>
> /** Get hint to ask that the array data is passed via integer
> or double, or normal setVertexAttribPointer function.*/
> bool getPreserveDataType() const { return _preserveDataType; }
>
> /** Set the rate at which generic vertex attributes advance
> during instanced rendering. Uses the glVertexAttribDivisor feature of
> OpenGL 4.0*/
> void setAttribDivisor(GLuint divisor) { _attribDivisor = divisor; }
>
> /** Get the rate at which generic vertex attributes advance
> during instanced rendering.*/
> GLuint getAttribDivisor() const { return _attribDivisor; }
>
> enum Binding
> {
> BIND_OFF=0,
> BIND_OVERALL,
> BIND_PER_PRIMITIVE_SET,
> BIND_PER_VERTEX
> };
>
> /** Specify how this array should be passed to OpenGL.*/
> void setBinding(Binding binding) { _binding = binding; }
>
> /** Get how this array should be passed to OpenGL.*/
> Binding getBinding() const { return _binding; }
>
> At present all of them doing nothing at all apart from sitting there
> looking pretty. The PreserveDataType and AttribDivisor are entirely
> new and are intended to support new extensions being added to the OSG
> - but their implementation will have to wait till the GeometryNew
> refactor is further down the road.
>
> The Normalize and Binding map directly to what has been available in
> osg::Geometry::ArrayData's normalize and binding parameters. The
> binding we've typically set via Geometry::setNormalBinding() etc.
> which we could easily remap internally to array->setBinding(..), but
> it will of course require one to call setNormalBinding() after
> setNormalArray(..) otherwise the setting would be lost. Alternatively
> we just drop backwards compatibility and force uses to set the binding
> directly on the array.
>
> Providing backwards compatibility for normalize will more awkward as
> custom normalize settings would require a direct setting to ArrayData,
> however, I'm inclined to think dropping this element of backwards
> compatibility won't effect too many users as I expect most users not
> to be applying anything other than defaults.
>
> The naming of Binding is something I'm note yet sure of, with the
> introduction of AttribDivisor the binding becomes a bit less clearly
> defined as well. Not sure what to make of this yet...
>
> Robert.
> _______________________________________________
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> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
--
Jordi Torres
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