[Librem-5-dev] Fwd: Software/Game Development for the Librem5

[Guido Günther]

Hi,
On Sat, Jun 09, 2018 at 11:26:22AM -0600, Heather Ellsworth via Librem-5-dev wrote:
> Subject: Re: Software/Game Development for the Librem5
> Date: Sat, 9 Jun 2018 11:34:46 +0200
> From: Clipsey <eclipsingrainbows at gmail.com>
> To: Heather Ellsworth <heather.ellsworth at puri.sm>
> 
> After doing a bit of research, Vulkan does have an WSI binding for
> Wayland, so it more or less depends on if the GPU in the phone supports
> Vulkan. If games are to be written for it, Vulkan is a good
> consideration as it will allow for way lower overhead when rendering
> game graphics (due to the more direct access to the GPU Vulkan gives)

Currently the etnaviv driver does not support Vulkan. Only intel and AMD
do AFAIK:

    https://mesamatrix.net/
    
and indeed if you run "vulkaninfo" on an etnaviv board:

===========
VULKAN INFO
===========

Vulkan Instance Version: 1.1.73

Cannot create Vulkan instance.
/build/vulkan-E9u7gz/vulkan-1.1.73+dfsg/demos/vulkaninfo.c:812: failed with VK_ERROR_INCOMPATIBLE_DRIVER

So vulkan support is a TODO for etnaviv (used in the Librem-5).

Cheers,
 -- Guido