[cairo] cairo-1.13 finally opens

[Henry (Yu) Song - SISA]

The upstream order might be this way: glesv2 with ANGLE extension first to be upstreamed, then glesv3, then gaussian blur, then shadow.

The order I have implemented is

1. image gaussian blur
2. gl gaussian blur
3. gl shadow
4. image shadow
5. xcb gaussian blur
6. xcb shadow
7. quartz gaussian blur
8. quartz shadow
9. glesv3
10. glesv2 ANGLE extensions

They are interleaved with optimization and bug fixings though.


________________________________________
From: Bryce W. Harrington
Sent: Thursday, September 05, 2013 12:07 PM
To: Henry (Yu) Song - SISA
Cc: cairo at cairographics.org
Subject: Re: [cairo] cairo-1.13 finally opens

On Thu, Sep 05, 2013 at 06:42:38PM +0000, Henry (Yu) Song - SISA wrote:
> Hi, Bryce
>
> Good points on your comments.  It is short on test cases on shadow and blur.  If you can help on that would be great.  The branch is a fork work,  sorry about the messy commits.  It contains 4 major enhancements: gaussian blur, shadow, glesv3 and glesv2 with GL_ANGLE msaa extensions, pus fix bugs/optimzation here and there.
>

How interdependent are those four chunks?  I.e. could the
gaussian blur bits be split into its own branch and
reviewed/stabilized/landed first, then the others in turn?  Or would
this require a lot of patch fiddling to extract it?  Just trying to
think how to divide and conquer efficiently.  :-)

And yeah, I can definitely help on test cases for shadow and blur.
Figure we'll want both functional tests and some perf tests.

Bryce

> ________________________________________
> From: Bryce W. Harrington
> Sent: Thursday, September 05, 2013 11:37 AM
> To: Henry (Yu) Song - SISA
> Cc: cairo at cairographics.org
> Subject: Re: [cairo] cairo-1.13 finally opens
>
> On Thu, Sep 05, 2013 at 03:54:43PM +0000, Henry (Yu) Song - SISA wrote:
> > Hi, Chris
> >
> > I have added Guassian blur and shadow support in cairo.  It is available in filters-wip branch from https://github.com/SRA-SiliconValley/cairogles
> >
> > The gaussian blur and shadow support are available for GL/GLES, image, xcb and quartz backend.
> >
> > features in filters-wip
> >
> > 1. synced with cairo-1.12.14
> > 2. gaussian blur for gl/gles, image, xcb and quartz backends
> > 3. gl msaa compositor supports GL, GLESv3
> > 4. gl msaa compositor supports GLESv2 with the following three extensions: GL_EXT_multisampled_render_to_texture, GL_IMG_multisampled_render_to_texture, and GL_ANGLE_multisample_framebuffer/GL_ANGLE_framebuffer_blit
> > 5. support both drop shadow and inset shadow for gl/gles, image, xcb and quartz backends
> > 6. support shadow caching
> > 7. support custom shadow (e.g., you can draw arbitrary shadow path)
>
> I count about 180 individual patches on this branch (although maybe some
> are already merged?)  Would the strategy for integrating this branch be
> to merge it, and then review and fix any remaining details in master, or
> to split the changes up into smaller patchsets for tighter review?  Or...?
>
> In any case, I've been tinkering a bit with this branch, and I'd be
> happy to help on any grunt work needed here.
>
Bryce