i.MX6S screen rotation

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i.MX6S screen rotation

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Yuri
NXP Employee
NXP Employee

Original SR #1-1138945566.

Our customer Navico builds a board with i.MX6S and a native TFT 1366x768 display

and needs to attach second HDMI output that will also be 1366x768.

The problem is that because of the polarization filter of the glass,

these two displays need to be rotated 180 degrees with respect to each other. 

They are asking us to give them direction on the best way to do this.

The IPU lacks the capability, and it looks like GPU solutions may require

triple buffering of the fb. They are open to any suggestion like moving

to a i.MX6D or maybe a DL and have the other core do the rotation.

This route may not be ideal because the single IPU may be a problem.

Victor.

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1 解決策
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Yuri
NXP Employee
NXP Employee

There the two options for you:

1. If you use QDeclarativeView or QGraphicsView you can simply use

http://qt-project.org/doc/qt-5.0/qtwidgets/qgraphicsview.html#rotate

that should be fearly trivial to do.

2. Within the QWS plugin you can rotate as well.

This has one very important limitation:

It can only happen/be decided at start up.

You need to either configure with a special qws gfxdriver enabled and/or use the API your self:

http://qt-project.org/doc/qt-4.8/qt-embedded-displaymanagement.html

http://qt-project.org/doc/qt-4.8/qscreen.html#setTransformation

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Yuri
NXP Employee
NXP Employee

There the two options for you:

1. If you use QDeclarativeView or QGraphicsView you can simply use

http://qt-project.org/doc/qt-5.0/qtwidgets/qgraphicsview.html#rotate

that should be fearly trivial to do.

2. Within the QWS plugin you can rotate as well.

This has one very important limitation:

It can only happen/be decided at start up.

You need to either configure with a special qws gfxdriver enabled and/or use the API your self:

http://qt-project.org/doc/qt-4.8/qt-embedded-displaymanagement.html

http://qt-project.org/doc/qt-4.8/qscreen.html#setTransformation

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YixingKong
Senior Contributor IV

Yuri, this SR had been closed for some time. You should have followed the process and put the answer back to here and close the DI. Also move the DI to public community if no customer critical information in.

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YixingKong
Senior Contributor IV

Yuri, this SR had been closed for some time. You should have followed the process and put the answer back to here and close the DI. Also move the DI to public community if no customer critical information in.

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karina_valencia
NXP Apps Support
NXP Apps Support

SR 1-1151998941

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