From mboxrd@z Thu Jan 1 00:00:00 1970 MIME-Version: 1.0 In-Reply-To: <031b7fdd9ab256d19a5c9da921495f73@kw.quanstro.net> References: <031b7fdd9ab256d19a5c9da921495f73@kw.quanstro.net> Date: Tue, 7 May 2013 16:12:38 +0200 Message-ID: From: Gorka Guardiola To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net> Content-Type: multipart/alternative; boundary=20cf3074b45ce64eb104dc21685c Subject: Re: [9fans] vncv sw cursor trail Topicbox-Message-UUID: 57929a4a-ead8-11e9-9d60-3106f5b1d025 --20cf3074b45ce64eb104dc21685c Content-Type: text/plain; charset=ISO-8859-1 On Tue, May 7, 2013 at 4:10 PM, erik quanstrom wrote: > On Tue May 7 05:03:57 EDT 2013, yarikos@gmail.com wrote: > > When using vncv on a terminal with software cursor (vesa, rpi) the > > mouse cursor leaves a trail. This seem to be caused by the fact that > > vncv loads picture updates with loadimage(2) directly to screen. > > Loading to an offscreen image followed by a draw(2) to screen removes > > the artifact: > > i'm not convinced this fix gets at the real issue. (and allocating > new images might amplify latency.) This problem happens in 386 too (I mean the original problem this patch is addressing or tries to address). G. --20cf3074b45ce64eb104dc21685c Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable



On Tue, May 7, 2013 at 4:10 PM, erik quanstrom <quanstro@quanstro.net> wrote:
On Tue May =A07 05:03:57 E= DT 2013, yarikos@gmail.com wrote:<= br> > When using vncv on a terminal with software cursor (vesa, rpi) the
> mouse cursor leaves a trail. =A0This seem to be caused by the fact tha= t
> vncv loads picture updates with loadimage(2) directly to screen.
> Loading to an offscreen image followed by a draw(2) to screen removes<= br> > the artifact:

i'm not convinced this fix gets at the real issue. =A0(and alloca= ting
new images might amplify latency.)

=A0This = problem happens in 386 too (I mean the original
problem this patc= h is addressing or tries to address).
G.


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