[Bf-committers] what is the license of Blender GLSL shaders?

[Dalai Felinto]

Hi Ton,

the shader files (gpu_shader_material.glsl and gpu_shader_vertex.glsl) have
no license header on them.
Thus my hope that they were not under the GPL.

In fact most of the code snippets we have there are classic implementations.
I don't think they can even be under specific license.
I find strange to have GPL reinforced over them.

> First: there's no "BF" or "BFL" license... it's just "GNU GPL v2
or later". :)
I guess I was a bit outdated :p I was referring to this
http://www.blender.org/BL/

Thanks,
Dalai

2011/10/13 Tom M <letterrip at gmail.com>

> Ton,
>
> check with FSF, but I seriously doubt that a shader would be
> expressive, and hence is not copyrightable.
>
> A generated shader is even less likely to be viewed as expressive.
>
> LetterRip
>
> On Thu, Oct 13, 2011 at 1:36 AM, Ton Roosendaal <ton at blender.org> wrote:
> > Hi Dalai,
> >
> > First: there's no "BF" or "BFL" license... it's just "GNU GPL v2 or
> > later". :)
> >
> > If I understand the function well, it's generating a text file using
> > the GLSL shader code as in our svn (which is GPL). In that way the
> > exported glsl code remains GPL.
> >
> > -Ton-
> >
> > ------------------------------------------------------------------------
> > Ton Roosendaal  Blender Foundation   ton at blender.org    www.blender.org
> > Blender Institute   Entrepotdok 57A  1018AD Amsterdam   The Netherlands
> >
> > On 13 Oct, 2011, at 8:17, Dalai Felinto wrote:
> >
> >> Hi,
> >> I understand that Blender code is under GPL/BF licensing.
> >>
> >> But if I use the command (added on rev. 40061):
> >> shader = gpu.export_shader(scene,material)
> >>
> >> Is the shader still GPL/BFL? The shader is made of snippets of
> >> Blender code,
> >> so I can see what lawyers may clam. And technically speaking a GLSL
> >> Shader
> >> is a program (compiles and run in the GPU).
> >>
> >> It would be really sad if this is the case though. Otherwise this
> >> could be
> >> used for external engines.
> >>
> >> Thanks,
> >> Dalai
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