[PATCH 0/4] fb support for 8bpp bitmaps

[Michel Dänzer]

On Mon, 2014-01-13 at 18:00 -0800, Keith Packard wrote:
> Here's a fun sequence of patches. What it does is make fb support
> bitmaps (depth 1 pixmaps) that are stored in 8 bits per pixel. Why
> would you want to do this, you ask? Well, Glamor wants to use GL for
> all rendering, and GL has no support for 1bpp surfaces. Making fb
> support bitmaps in 8bpp means we'll have "native" format support in GL
> for the same pixmaps which means we can map them instead of copying
> them.

Didn't SNA prove though that sharing the same pixel storage for GPU and
CPU doesn't give the overall best performance even with Intel GPUs? It
certainly doesn't with most other GPUs.


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer