How to directly write to HDMI without desktop?

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Board: OrangePi ZeroPlus2 H5

I need display some graphics using LCD, resolution is about 640x480

If armbian flashing with desktop,  then the usable memory (512MB) is not enough for my app....

So, in console mode, does some libraries could help me to write pixel to display via HDMI? and it configurable(or test succeeded) in my board?


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