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QT application with FPGA driven display
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Can we create a Qt GUI application with FPGA driven display
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No idea, but can your FPGA act like a framebuffer in Linux?
https://doc.qt.io/qt-5/embedded-linux.html#linuxfbIs it your primary display, or a special purpose display? If its special purpose (used for some sort of imaging) it may be possible to render things to an image and then transfer that to your FPGA. While the rest of the app is on a "normal" device.
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FPGA can't act as a frame bufffer and It is a primary display.Can i draw all the output to an image and block the displaying on screen by qt.
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Whats on the FPGA? What is it programmed to do?
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FPGA is used to create some images and display on screen also there are some other functionalities done by it.
I want to know if a Qt GUI application can be painted on image buffer[char array] instead of displaying it on LCD screen.
if we can do it what are the possible ways.
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@Krishnakanth said in QT application with FPGA driven display:
I want to know if a Qt GUI application can be painted on image buffer[char array] instead of displaying it on LCD screen.
Every QWidget has a paint() method so the target of that paint method could be a memory buffer if you desire. In fact, often times widgets are drawn to a buffer before being displayed.
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how to create a custom frame buffer
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@Kent-Dorfman i dont want to modify all the widgets. i want to apply changes at high level.
@fcarney @Kent-Dorfman Can i use offscreen Platform-independent plugin to render to buffer
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Xvfb x-server then...or something similar, but your discussion is now well outside the scope of Qt.
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Hi,
How is the rest of the system communicating with that FPGA ? Depending on that, you might be able to write a QPA plugin that will allow you to write your application as usual while leveraging said FPGA.
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@SGaist Thank you so much.
So, i think i have to write a QPA plug-in which is similar to "minimal" provided by qt.In flush call i have to share the image data to FPGA.
