On Tue, 2011-02-08 at 22:51 +0100, Marek Olšák wrote:
>
> void redefine_user_buffer(
> struct pipe_context*,
> struct pipe_resource*,
> unsigned offset,
> unsigned size);
>
> and new width0 would implicitly be offset+size;
>
I think this is a great place to start
On Tue, Feb 8, 2011 at 10:39 PM, Keith Whitwell wrote:
> On Tue, 2011-02-08 at 22:29 +0100, Marek Olšák wrote:
> >
> >
> > Keith,
> >
> > redefine_user_buffer() would be a good compromise and I believe the
> > performance hit wouldn't be so noticable. It would also allow partial
> > uploads of co
On Tue, 2011-02-08 at 22:29 +0100, Marek Olšák wrote:
>
>
> Keith,
>
> redefine_user_buffer() would be a good compromise and I believe the
> performance hit wouldn't be so noticable. It would also allow partial
> uploads of constants in a user buffer, which is something we'd like to
> have
> too
Keith,
redefine_user_buffer() would be a good compromise and I believe the
performance hit wouldn't be so noticable. It would also allow partial
uploads of constants in a user buffer, which is something we'd like to have
too.
Currently, st/mesa in st_draw_vbo is doing:
- N calls to resource_destr
Keith
- Original Message -
From: "Marek Olšák"
To: "Keith Whitwell"
Cc: mesa-dev@lists.freedesktop.org
Sent: Sunday, 6 February, 2011 12:01:01 PM
Subject: Re: [Mesa-dev] Gallium proposal: add a user pointer in pipe_resource
Hi Keith,
1) Recreating user buffe
Hi Keith,
1) Recreating user buffers is very expensive, even though it's only the
CALLOC overhead. Draw-call-heavy apps simply suffer hard there. It's one of
the things the gallium-varrays-optim branch tries to optimize, i.e. make the
user buffer content mutable. I can't see another way out.
2)
On 01.02.2011 18:55, Keith Whitwell wrote:
>> In theory, doing user buffer uploads at the state tracker side using
>> inline transfers might work and should remove some burden from
>> drivers.
> This would be an alternate approach -- the state-tracker could itself
> figure out min/max_index, and u
On Mon, 2011-01-31 at 10:46 -0800, Marek Olšák wrote:
> Hi Keith,
>
> From my point of view, user buffers are just pointers passed through
> the Gallium interface and are well-defined from what I can see. They
> might be owned by the application (e.g. set via glVertexPointer etc.),
> therefore usi
On 31.01.2011 21:17, José Fonseca wrote:
> On Mon, 2011-01-31 at 11:48 -0800, Christoph Bumiller wrote:
>> On 31.01.2011 19:46, Marek Olšák wrote:
>>> With this manager, the drivers don't have to deal with user buffers when
>>> they are bound as vertex buffers. They only get real hardware buffers.
On Mon, Jan 31, 2011 at 9:17 PM, José Fonseca wrote:
> On Mon, 2011-01-31 at 11:48 -0800, Christoph Bumiller wrote:
> > On 31.01.2011 19:46, Marek Olšák wrote:
> > > With this manager, the drivers don't have to deal with user buffers
> when they are bound as vertex buffers. They only get real har
On Mon, 2011-01-31 at 11:48 -0800, Christoph Bumiller wrote:
> On 31.01.2011 19:46, Marek Olšák wrote:
> > With this manager, the drivers don't have to deal with user buffers when
> > they are bound as vertex buffers. They only get real hardware buffers.
>
> Please do *not* take away my user buff
On 31.01.2011 19:46, Marek Olšák wrote:
>
> 1) New vertex buffer manager
>
> This is how I'd like to put the burden of uploading user buffers out
> of the drivers. I've made a new vertex buffer manager. It can be found
> here:
> http://cgit.freedesktop.org/~mareko/mesa/commit/?h=vbuf-mgr&id=94a53b6
On Mon, Jan 31, 2011 at 3:17 PM, Keith Whitwell wrote:
> On Sat, 2011-01-29 at 15:12 -0800, Marek Olšák wrote:
> >
> >
> > Hi,
> >
> > I am proposing to add a pointer to a user buffer in pipe_resource.
> > There are two reasons for this:
> >
> > 1) I would like to have a way to query outside of a
On Sat, 2011-01-29 at 15:12 -0800, Marek Olšák wrote:
>
>
> Hi,
>
> I am proposing to add a pointer to a user buffer in pipe_resource.
> There are two reasons for this:
>
> 1) I would like to have a way to query outside of a driver whether a
> buffer is a user buffer. Simply comparing the point
Hi,
I am proposing to add a pointer to a user buffer in pipe_resource. There are
two reasons for this:
1) I would like to have a way to query outside of a driver whether a buffer
is a user buffer. Simply comparing the pointer with NULL would do the trick.
2) I would like to efficiently obtain a
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