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   Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:52 JST Lup Yuen Lee 李立源

   Let's look inside #PinePhone's Allwinner A64 Display Engine ... And render some graphics with Apache #NuttX RTOS

   https://github.com/lupyuen/pinephone-nuttx#display-engine-in-allwinner-a64

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:24 JST Lup Yuen Lee 李立源

     in reply to

     Here's how we test #PinePhone's A64 Display Engine ... By booting Apache #NuttX RTOS on microSD

     https://lupyuen.github.io/articles/de?9#test-pinephone-display-engine

     agentcasey likes this.
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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:25 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine supports blending of 3 Framebuffers ... Let's render all 3 Framebuffers

     https://lupyuen.github.io/articles/de?8#render-circle-overlay

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:26 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine can render Framebuffers as Overlays ... Let's render a Square Overlay

     https://lupyuen.github.io/articles/de?7#render-square-overlay

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:27 JST Lup Yuen Lee 李立源

     in reply to

     Updates to #PinePhone's Framebuffers are pushed instantly to the LCD Display ... Because the Framebuffers are connected to the A64 Display Engine over DMA

     https://lupyuen.github.io/articles/de?6#animate-madelbrot-set

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:28 JST Lup Yuen Lee 李立源

     in reply to

     Let's render something infinitely fascinating with #PinePhone's A64 Display Engine: Mandelbrot Set

     https://lupyuen.github.io/articles/de?5#render-mandelbrot-set

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:29 JST Lup Yuen Lee 李立源

     in reply to

     Rendering Colour Blocks with #PinePhone's A64 Display Engine

     https://lupyuen.github.io/articles/de?4#render-colours

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:30 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine handles DMA, Overlay, Scaling and Blending of the Framebuffers

     https://lupyuen.github.io/articles/de?3#display-engine-in-allwinner-a64

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:31 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone graphics rendering gets complicated ... Because the ST7703 LCD Controller is RAM-less

     https://lupyuen.github.io/articles/de?2#display-rendering-on-pinephone

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:32 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone renders graphics to the LCD Display ... By calling the A64 Display Engine and Timing Controller

     https://lupyuen.github.io/articles/de?2#display-rendering-on-pinephone

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:33 JST Lup Yuen Lee 李立源

     in reply to

     Rendering graphics to #PinePhone's LCD Display with Apache #NuttX RTOS ... All shall be explained in this article

     https://lupyuen.github.io/articles/de?1

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:35 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine also supports Rotation, Write-Back and Video Scaling

     https://github.com/lupyuen/pinephone-nuttx#other-display-engine-features

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:36 JST Lup Yuen Lee 李立源

     in reply to

     We captured the Display Engine Log from #PinePhone p-boot ... Super helpful for creating the Display Engine Driver for Apache #NuttX RTOS

     https://github.com/lupyuen/pinephone-nuttx#display-engine-usage

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:37 JST Lup Yuen Lee 李立源

     in reply to

     Here's how we run the p-boot Display Code on #PinePhone with Apache #NuttX RTOS

     https://github.com/lupyuen/pinephone-nuttx#test-pinephone-display-engine

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:38 JST Lup Yuen Lee 李立源

     in reply to

     Here's how we render the Blue Square and Green Circle as UI Overlays on #PinePhone's A64 Display Engine

     https://github.com/lupyuen/pinephone-nuttx#render-circle-overlay

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:39 JST Lup Yuen Lee 李立源

     in reply to

     Let's add a Blue Square and Green Circle as #PinePhone Framebuffers

     https://github.com/lupyuen/pinephone-nuttx#render-square-overlay

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:40 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's Framebuffers support Animation ... Because A64 Display Engine renders Framebuffers via DMA

     https://github.com/lupyuen/pinephone-nuttx#animate-madelbrot-set

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:41 JST Lup Yuen Lee 李立源

     in reply to

     Let's render something more interesting on #PinePhone with #NuttX: Mandelbrot Set

     https://github.com/lupyuen/pinephone-nuttx#render-mandelbrot-set

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:42 JST Lup Yuen Lee 李立源

     in reply to

     Here's how we render a Framebuffer with #PinePhone's A64 Display Engine

     https://github.com/lupyuen/pinephone-nuttx#render-colours

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:43 JST Lup Yuen Lee 李立源

     in reply to

     Let's fill a Framebuffer with Red / Green / Blue and render on #PinePhone

     https://github.com/lupyuen/pinephone-nuttx#render-colours

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:44 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone p-boot has some helpful code for A64 Display Engine ... Let's run it on Apache #NuttX RTOS and experiment with the Display Engine

     https://github.com/lupyuen/pinephone-nuttx#test-pinephone-display-engine

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:46 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine: Why so complicated? Probably because it was created for Set-Top Boxes ?

     https://github.com/lupyuen/pinephone-nuttx#display-engine-mixers

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:47 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's Display Engine Mixer supports UI Overlay, UI Scaling and UI Blending ... For 3 UI Channels

     https://github.com/lupyuen/pinephone-nuttx#display-engine-mixers

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:48 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine supports 3 UI Overlay Channels ... Which lets us render 1️⃣ Mandelbrot Set 2️⃣ Blue Square 3️⃣ Green Circle

     https://github.com/lupyuen/pinephone-nuttx#display-engine-mixers

   • Embed this notice
     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:50 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine mixes 1 Video Channel with 3 UI Channels over DMA ... And pumps the pixels continuously to ST7703 LCD Controller (via the Timing Controller)

     https://github.com/lupyuen/pinephone-nuttx#display-engine-mixers

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Friday, 28-Oct-2022 23:15:51 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's A64 Display Engine is hidden in the Allwinner H3 Docs ... Because Allwinner A64 is actually a H3 upgraded with 64-bit Cores

     https://github.com/lupyuen/pinephone-nuttx#display-engine-in-allwinner-a64

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     Lup Yuen Lee 李立源 (lupyuen@qoto.org)'s status on Saturday, 29-Oct-2022 08:15:57 JST Lup Yuen Lee 李立源

     in reply to

     #PinePhone's p-boot Bootloader is super helpful for deciphering the Allwinner A64 Display Engine

     https://lupyuen.github.io/articles/de?10#p-boot-display-code

     agentcasey likes this.