Re: Refresh Rate

["Paul Davis" <pjdavis engineering uiowa edu>]

Duncan,

I haven't the slightest really. My data is all single byte per pixel.
So I have to move it to 3 bytes per pixel somewhere along the way to
draw it to screen. (Whether or not its done implicitly by the
draw_gray_image). So I just use the pixmap to handle this for me.
Plus using the pixmap allows me to not have to worry about making sure
the data matches the current X screen format or what not.

Paul


On 11/29/06, Duncan Perrett elekta com <Duncan Perrett elekta com> wrote:
> Paul, thank you for spending the time to try and help me.
>
> I have changed the code to use the idle signal instead of a timeout.
> I noticed that you use a pixbuf which I had decided against.
> I currently use Gdk::Drawable::draw_gray_image() but was considering
> experimenting with Gdk::Drawable::draw_image().
>
> The reason  was that draw_image() takes an Gdk::Image which I can construct
> to use shared memory.  I was hoping this might speed things up.
> Is there a similar way to get draw_gray_image() to use shared memory?  Or
> am I barking up the wrong tree?
>
> Thanks.
>
>
>
>
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