ultra96-fractal

This is an Hardware-accelerated Julia set explorer running on Ultra96. The current implementation can generate 1920x1080 pixels image at 16 frames per seconds.

Video: https://twitter.com/myon___/status/1163835624710795264

Try it on your Ultra96

1. Download ultra96v2.zip from the latest release page, extract the files (BOOT.BIN, boot.scr, image.ub), and copy these onto FAT32 formatted microSD card.
2. Insert the microSD card into the Ultra96 microSD card slot.
3. Connect the Ultra96 to a monitor.
4. (optional) Connect a gamepad (e.g. Logitech Gamepad F310) to the Ultra96.
5. Connect the power supply to the Ultra96.
6. Press the power button.

How to build

Required Tools:

• Vivado Design Suite - HLx Editions (2022.1)
• PetaLinux Tools (2022.1)

1. Clone repository

    $ git clone --recursive https://github.com/Tosainu/ultra96-fractal.git
    $ cd ultra96-fractal
   

2. Import Vivado project and generate Bitstream

    $ vivado -mode tcl -source fractal.tcl -tclargs
   
    Vivado% launch_runs impl_1 -to_step write_bitstream -jobs 32
    Vivado% wait_on_run impl_1
    Vivado% write_hw_platform -fixed -include_bit vivado_project/system_wrapper.xsa
    Vivado% q
   

3. Build PetaLinux project

    $ cd petalinux_project
    $ petalinux-config --silentconfig --get-hw-description=../vivado_project
    $ petalinux-build
    $ petalinux-package --boot --fpga --u-boot
   

4. Copy generated files to microSD card

    $ cp image/linux/{BOOT.BIN,boot.scr,image.ub} /path/to/sd/card
   

How it works

🚧 TODO

License

Distributed under the MIT license except these files.

• petalinux_project/project-spec/meta-user/recipes-modules/kernel-module-fractal/*
  • GNU General Public License v2.0

See also

• Blog posts
  • Ultra96 で Julia set をぐりぐり動かせるやつを作った | Tosainu Lab
  • Ultra96 で Julia set をぐりぐり動かせるやつをもう少し強くした | Tosainu Lab
• Slides
  • Julia set explorer を支える技術 -dma-buf によるデバイスドライバ間のバッファ共有- (Feb. 8th, 2020 - カーネル/VM探検隊@関西 10回目)