graphics/vnc/server breakage

apache / nuttx

Apache NuttX is a mature, real-time embedded operating system (RTOS)

https://nuttx.apache.org/

Apache License 2.0

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graphics/vnc/server breakage #1368

Open patacongo opened 4 years ago

patacongo commented 4 years ago

When the VNC server was created initially, it worked well. However, in 2019 as part of the Twm4Nx development, I tried to use it and it did not work. These are problems that I noted:

Mouse Input is not received and, hence, the cursor is not drawn. Twn4Nx is not useful with not mouse cursor.
Background is black (it should be blue @16bpp). Colors are bad. Background is not transparent. Toolbar buttons are visible but no other part of the Window.
I think that root cause of the drawing errors is the RRE is not working. Or, more likely, it has been deprecated and no longer supported by the host VNC client.
There are other Twm4Nx/VNC server integration issues but these do not seem to be directly related to VNC server issues.

I did make several changes in graphics/vnc/server but did not fix the basic problems.

btashton commented 4 years ago

@patacongo Is there a config that you were using for testing this?

patacongo commented 4 years ago

@patacongo Is there a config that you were using for testing this?

I tried to bring Twm4Nx (a Tom's Window Manager work-alike) using same70-xplained:twm4nx.

Previously, I was using samv71-xult:vnc and samv71-xult:vnxwm successfully in the past. But I suspected those are broken as well too.

I did make several changes trying to bring up same70-xplained:twm4nx. Since they were not successful they are suspect.

Did you see the remote interface that Ken Pettit implemented using a extended pdcurses? There are some screen shots here:

https://groups.google.com/forum/#!searchin/nuttx/pdcurses$20screenshot|sort:date/nuttx/pWR9QzYII9k/8AbEiOnSDAAJ and https://groups.google.com/forum/#!searchin/nuttx/pdcurses$20terminal$20mode|sort:date/nuttx/Z6yFyui4jsU/NnjHK1VPCAAJ

That is a another nice way to get a remote (text) graphics interface.

patacongo commented 4 years ago

I tried to bring Twm4Nx (a Tom's Window Manager work-alike) using same70-xplained:twm4nx.

My gut feeling was that there is some issue with the message called RRE which paints a rectangular region with a run length encoded data. I think that the RRE message was deprecated.. I am not sure. That is the behavior that I saw; like the RRE was being ignored.

GooTal commented 1 year ago

Hi, i tried to use Twm4Nx recentyly but failed. I enabled some configs from menuconfig. But the CONFIG TWM4NX_TITLE_FONTID is missing from releases 12.1 branch. And i can`t build the image successfully.

By the way, is graphics available using qemu? I`ve seen some platforms using graphics on real hardware though. I`m not quite familiar with graphics. Thanks a lot.