[GEM-dev] [GEM-cvs] [SCM] Gem - Graphics environment for multimedia branch, master, updated. ea9034f83180410f96e063a32903d06992355498

[Jack]

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Hello,

Le 20/05/2014 09:04, Cyrille Henry a écrit :
>
>
> Le 15/05/2014 13:26, IOhannes m zmoelnig a écrit :
> On 2014-05-13 12:58, Cyrille Henry wrote:
> >>>
> >>> add a new 32 type for framebuffer (since GL_RGB_FLOAT32_ATI is not
> >>> usable with intel GPU on linux)
>
> wouldn't it make more sense to have a single float32 type on the
> patch-level ("RGB32"), and use whatever is available on the given GPU?
>
> > It would be nice that Gem choose what type to use, but I don't know
how to do this choice when many type are available. I think they are not
equivalent depending on what you want to do. So the easiest solution is
to test them on each combination of patch / hardware.
>
> > moreover RGBA32 is a 4 channel type, while GL_RGB_FLOAT32_ATI is only 3.

I support to have a real RGBA32 than only a RGB32 with only three
channels. It is more easy for me to mix textures from framebuffer in
shaders with a "real" alpha channel. That's why i often use RGBA for
this purpose (instead of RGB32)...
++

Jack


>
> > cheers
> > Cyrille
>
>
>
> mfgasdr
> IOhannes
>>
>>
>>
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