On Nov 1, 2013, at 10:02 AM, kilon alios <kilon.al...@gmail.com> wrote:
> Igor I got Athens-Tutorial but it gives me a MNU: AthensViewMorph>>layout:
strange tell us more.
You know
which image
….
Stef
>
>
> On Fri, Nov 1, 2013 at 10:23 AM, kilon alios <kilon.al...@gmail.com> wrote:
> ShivaVG looks definitely as a way to ease the pain of porting to OpenGL.
>
> Some notes on the matter. The Cairo backend for OpenGL is opengl but yet its
> not opengl. What it does is render cairo as a opengl texture. OpenGL true
> power is in the shaders so you dont get the kind of hardware acceleration you
> would expect.
>
> Speewise as surprising this may sound opengl is not the ideal option,
> because opengl is mainly 3d orientated. The ideal solution from what I have
> seen would be something like CUDA or OpenCL, that give direct access to the
> GPU cores and allow you to do any kind of computation thus liberation from
> the restrictions of APIs. For example Blender takes advantage of both Opengl
> and CUDA , the CUDA renderer is phenomenal better because of its flexibility.
>
> The problem however is that all that are very technical and it takes quite
> some dedication to implement.
>
> A reason why I abandoned opengl as an idea is that I came to realise that
> Cairo was already fast enough for my needs. But I still keep that door open
> for the distant future, ShivaVG with OpenCL would be awesome for really
> intensive GUIs and complex Graphics and definitely would love to give it
> another try eventually.
>
>
> On Fri, Nov 1, 2013 at 2:19 AM, Igor Stasenko <siguc...@gmail.com> wrote:
>
>
>
> On 1 November 2013 00:53, Alexandre Bergel <alexandre.ber...@me.com> wrote:
> Not sure to fully understand the problem. In what ShivaVG would solve a
> situation better than with Athens? If I understand well, a then working with
> Cairo uses the hardware acceleration right?
> What is it not enough for you need?
>
> First, OpenVG is more complete and i would say thoroughly designed API than
> Cairo.
> Second, i don't want to go Athens -> Cairo -> OpenGL
> if i can do directly Athens->OpenGL.
> Putting extra dependency out of the loop is advantageous, OpenGL is widely
> supported industry standard, which today you can find even on portable
> devices, while you cannot say same about Cairo.
> (not mentioning avoiding costs of having multiple layers to get to the
> hardware).
>
> ShivaVG implements OpenVG API using OpenGL, since OpenVG is vector graphics
> framework
> it can serve as a good source to look how to implement OpenGL backend for
> Athens.
>
> Alexandre
>
> > Le 31-10-2013 à 19:16, Igor Stasenko <siguc...@gmail.com> a écrit :
> >
> > I cannot say, of course, how it would be for you, but there is ShivaVG[1]
> > open-source
> > opengl implementation of OpenVG, more or less feature-complete,
> > so all what is needed is to port this code from C to smalltalk.
> > Or if not for porting, but using as a source of insights how to implement
> > it.
> > I think it is fairly doable.
>
>
>
>
> --
> Best regards,
> Igor Stasenko.
>
>
