[Pixman] [PATCH 0/4] Meet the FPU-based implementation of the core pixel pipeline

Dmitri Vorobiev dmitri.vorobiev at movial.com
Tue Sep 21 11:10:59 PDT 2010

On Tue, Sep 21, 2010 at 8:51 PM, Soeren Sandmann <sandmann at daimi.au.dk> wrote:
> Dmitri Vorobiev <dmitri.vorobiev at movial.com> writes:
>> > Recently, there was a debate about using floating-point hardware
>> > for a Pixman implementation instead of the fixed point code. In
>> > our company, we have developed an FPU-based implementation of the
>> > core pixel pipeline, including support for all pixel formats and
>> > combiners, and I am now working on the resulted code to make the
>> > latter upstreamable. The patch series that follows is the first
>> > outcome of this work.
>> I think it's worth mentioning explicitly that this patch series isn't
>> the whole implementation, which we have here. I'm going to post more
>> code in the coming days. However, following the "release early,
>> release often"-motto, I decided to share now that part that is ready
>> at this moment.
> First, thanks for doing this work. I think a floating point pixel
> pipeline is a very useful thing to have. I also appreciate the patches
> going to the list early.

Soeren, thank you for your comments.

> As a practical matter, it would be useful at least for me if you can
> publish a git repository containing this work. Realistically, this
> floating point pipeline likely won't be ready for 0.20, so there will
> be some rebasing necessary.

Well, currently I don't think I have a good server where I could keep
the Git repository. I am working with a local tree here and am trying
to keep up with the master branch, merging and rebasing as soon as I
notice new commits there. However, I could of course use some public
services such as Github, and I'll see what I can do.

As for the rest of the comments, I believe that Jonathan, who is the
original author of the FPU implementation, would have more appropriate


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