[vtkusers] vtk & shaders & GPU

[Giancarlo Amati]

Really many thanks!!! :D

Giancarlo

> Date: Mon, 22 Jun 2009 10:21:42 -0500
> Subject: Re: [vtkusers] vtk & shaders & GPU
> From: gbivins at objectreservoir.com
> To: gbivins at objectreservoir.com; wsales at gmail.com; ilferraresebono at hotmail.it
> CC: vtkusers at vtk.org
> 
> Found it:
> http://www.vtk.org/Wiki/images/3/39/Vtk_shaders_tudelft_tut.pdf
> 
> 
> On 6/22/09 10:20 AM, "Gerrick Bivins" <gbivins at objectreservoir.com> wrote:
> 
> > Also, vtkEdge which I think is more focused on GPGPU algorithms has license
> > restrictions. If you are trying to do CAD type effects (simple phong
> > lighting or bump mapping for example) these can be done within the framework
> > of "regular" VTK.
> > 
> > You can load a shader (glsl or cg) to an actor's property via an xml
> > material file or it can be defined inlined. Then turn shadingOn() on the
> > associated property.
> > 
> > Although the  documentation is somewhat lacking (changing
> > uniforms,attributes etc) I've found that most of what I wanted to do can be
> > done.
> > 
> > Basic methods you need look like this (Java):
> > {
> > ...
> >  property = actorToShade.GetProperty();
> >  property.LoadMaterialFromString(shader.getXMLShaderCodeString());
> >  property.ShadingOn();
> > ...
> > }
> > 
> > I think some of the some of the tests in VTK show exactly how to do this.
> > 
> > Here are the references I found a while back on the wiki
> > Implementation:
> > http://www.vtk.org/Wiki/VTK_Shaders
> > 
> > Brief description:
> > http://www.vtk.org/Wiki/Shader_In_VTK
> > 
> > There was a pretty good paper that I found (not easily) that walked through
> > a tutorial describing the basic parts of defining the shader pretty well...I
> > can try to dig that up if you'd like as well.
> > Gerrick 
> > 
> > 
> > On 6/22/09 9:56 AM, "Wagner Sales" <wsales at gmail.com> wrote:
> > 
> >> Hi Giancarlo,
> >> 
> >> You are looking for www.vtkedge.org.
> >> 
> >> Regards,
> >> 
> >> Wagner Sales
> >> 
> >> 2009/6/22 Giancarlo Amati <ilferraresebono at hotmail.it>:
> >>> Hello guys,
> >>> 
> >>> I would love to improve the my 3d software. I have a NVIDIA 7900GS GeForce
> >>> which I suppose it has a GPU. now, does vtk supports shaders and GPU
> >>> programming. If yes How? any example available? Any tutorial in building a
> >>> shader with VTK?
> >>> 
> >>> very kind regards.
> >>> GC
> >>> 
> >>> 
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