Re: [Mesa-dev] [PATCH 0/6] ARB_texture_float

[Philipp Klaus Krause]

Am 01.04.2011 15:56, schrieb Marek Olšák:

> Hi,
>
> please read on.
>
> This patch series adds the last pieces of ARB_texture_float support
> to Mesa and Gallium.
>
> The thing is Mesa and Gallium more or less already support float
> textures and renderbuffers in master. Gallium has full floating-point
> support in the interface and if it was a public API, people could
> just expose it and not care. There is clearly a need for a configure
> switch which can hide float renderbuffers from any interface, public
> or private, and driver developers should use such a switch.

Would there be a way to make this switch easier to flip by the user? As
you state it this looks like a lot of work to users that want to have it
enabled, at least when compared to the effort to get S3TC support.

Philipp

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[Sven Arvidsson]

On Fri, 2011-04-01 at 17:14 +0200, Philipp Klaus Krause wrote:
> Would there be a way to make this switch easier to flip by the user? As
> you state it this looks like a lot of work to users that want to have it
> enabled, at least when compared to the effort to get S3TC support.

According to this, an external library could be used for float textures,
but not for render targets:
http://www.x.org/wiki/Events/XDC2009/Notes#idr.3AOpenGL3andMesa

Most users (or at least the ones needing more than GL2) will probably
get binaries from some unofficial repository. Similar to how the
situation with H264 coders (and/or decoders) are handled today.

--
Cheers,
Sven Arvidsson
http://www.whiz.se
PGP Key ID 760BDD22



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[Marek Olšák]

There won't be any other way. It should be the Linux distributors' decision whether their users can use it or not.

Marek

On Fri, Apr 1, 2011 at 5:14 PM, Philipp Klaus Krause <pkk@...> wrote:

Am 01.04.2011 15:56, schrieb Marek Olšák:

> Hi,
>
> please read on.
>
> This patch series adds the last pieces of ARB_texture_float support
> to Mesa and Gallium.
>
> The thing is Mesa and Gallium more or less already support float
> textures and renderbuffers in master. Gallium has full floating-point
> support in the interface and if it was a public API, people could
> just expose it and not care. There is clearly a need for a configure
> switch which can hide float renderbuffers from any interface, public
> or private, and driver developers should use such a switch.

Would there be a way to make this switch easier to flip by the user? As
you state it this looks like a lot of work to users that want to have it
enabled, at least when compared to the effort to get S3TC support.

Philipp

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