Mixed pixmap creation

[fancy fang]

Great! I almost understand what you mean. However, I wonder why Unit Pixmap
needs a system buffer and the system buffer is malloced
in exaCreatePixmap_mixed instead of other places, such as
exaDoPrepareAccess_mixed. Thanks!

FancyFang

2010/10/14 Jonathan Morton <jonathan.morton at movial.com>

> On Thu, 2010-10-14 at 16:43 +0800, fancy fang wrote:
> > Thanks! But,  I still can not understand why Unit Pixmap needs both
> > system buffer and driver buffer? In my opinion, Unit Pixmap only needs
> > system buffer. Welcome your opinions!
>
> Because the driver needs to see the colour of this pixel, if it
> accelerates an operation involving this solid colour.  This is extremely
> common, eg. for rendering text the solid colour is combined with a mask
> defining the shape of the letters.
>
> --
> ------
> From: Jonathan Morton
>      jonathan.morton at movial.com
>
>
>
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