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Hi Pierre,
as I understand correct, the SetDesktopSize functionality is located between the remote and the local framebuffer content. This connection I have not touched, because this is not possible in my opinion due to direct RW framebuffer access for partial rectangular framebuffer updates and thus damage regions. So I have simply implemented a scaling factor for drawing the local framebuffer into the scaled viewport with respect to the scaled damage regions. So the implementation considers just three different points: 1) Get the viewport size independent of the framebuffer size [EASY] 2) Implement a coordinate transformation from framebuffer coordinates to viewport coordinates and vice versa (Window coordinates are still just translated viewport coordinates) [TRICKY because of FTLK and damage regions] 3) Implement the scaled drawing: (Win32: StretchBlt(...) instead of BitBlt(...) [EASY] / X11: Use nearestNeighbour algorithm and separate rectangular XImage for update region [EASY and FAST but bad quality] / OSX: [NOT DONE]) So I will try to get some patches on that topic only in the next future and send it to you. Maybe you can have a look at it to implement an improved version into the repository code? Regards, Christian On 24.09.2013 11:01, Pierre Ossman wrote: On Tue, 24 Sep 2013 10:22:36 +0200 Christian Steinle <christian.stei...@unicon-software.com> wrote:Dear TigerVNC developers, I am working for a company, that builds a Linux OS including some kind of help desk functionality via the X-Server loadable TigerVNC module. In the context of multiple monitors, there might be the need for the functionality of scaling the local window independent of the remote framebuffer size. So I have recently hacked such a functionality pretty rudimentary into the source code of version 1.3.0. However, it is still interesting for me, if you plan such a feature in the future? I should be also able to deliver the patch files, if you are interested in?Sure, it's definitely interesting. One issue is how it will play nice with the SetDesktopSize functionality though. Rgds --
Dr. Christian Steinle
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