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Yours3lf / rpi-vk-driver

VK driver for the Raspberry Pi (Broadcom Videocore IV)
MIT License
1.23k stars 70 forks source link

VK_EXT_image_drm_format_modifier #11

Closed letalvoj closed 4 years ago

letalvoj commented 4 years ago

Sorry, this is more like a question & possible feature request.

It seems that for a Vulkan backed Wayland compositor to work the VK_EXT_image_drm_format_modifier should be supported. https://github.com/swaywm/wlroots/pull/1214#issuecomment-647771405 Having a snappy responsive WM on an old power efficient RPi would be as cool as running games on it.

What is the current state of VK_EXT_image_drm_format_modifier? Any chance it could be supported in the future?

Amazin job btw.

Yours3lf commented 4 years ago

Hey,

some support for this is already present, buffers are assigned a tiling mode depending on their sizes, see here: https://github.com/Yours3lf/rpi-vk-driver/blob/922c6ff139845b4deeac9e2d06dd9df1ba487820/driver/kernelInterface.c#L186

I don't think it would be much work to support this extension. Not sure about how this works together with Wayland though.

Please feel free to submit a pull request once you've got it working :)

thanks!

letalvoj commented 4 years ago

Cool.

Please feel free to submit a pull request once you've got it working :)

Yeah, I'd love to! The same way how I would like to update some formulas in homebrew. Unfortunately both C and Ruby look like a giberish to me. 😞

Yours3lf commented 4 years ago

Well that's exactly what the Raspberry Pi is about, learning programming! I can only recommend C being pretty simple.

paulwratt commented 4 years ago

I just submitted a patch for a python app. I have never programmed in Python. if you test your changes, and use both the local code as reference and the internet for help, @letalvoj you could achieve your goal.

letalvoj commented 4 years ago

I assume that what @Yours3lf meant by

I don't think it would be much work to support this extension. Not sure about how this works together with Wayland though.

involves studying specification of the extension and a more than few lines of C code. If I ever get to this it will be after swaywm/wlroots#1214 gets merged and the Vulkan support in Sway gets stable. Unfortunatelly it does not seem to be anytime soon.

Thanks for your insight and positive attitude :)