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lupyuen committed Oct 21, 2022
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Expand Up @@ -3635,7 +3635,9 @@ d->planes[2].alpha = 128; // Dest Alpha

# Display Engine Usage

Here are the steps to render 3 UI Channels (1 to 3) with the Display Engine, based on the log captured from [test_display.c](https://github.com/lupyuen/incubator-nuttx-apps/blob/de2/examples/hello/test_display.c)...
Based on the log captured from our instrumented [test_display.c](https://github.com/lupyuen/incubator-nuttx-apps/blob/de2/examples/hello/test_display.c), we have identified the steps to render 3 UI Channels (1 to 3) with the Display Engine (`display_commit`).

This is how we will create an NuttX Driver for PinePhone's A64 Display Engine that implements Display Rendering...

1. Configure Blender...
- BLD BkColor (BLD_BK_COLOR Offset 0x88): BLD background color register
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