[vlc-devel] GSoC 2018 Idea `libplacebo Improvement'

Thomas Guillem thomas at gllm.fr
Tue Mar 20 21:03:48 CET 2018


Niklas, the creator of libplacebo will know how to respond.

As far as Metal is concerned. We need to have a discussion about using
or not MoltenVk since the Vulkan support is quite advanced in
libplacebo now.
The main goal of using a new vout for ios/macOS is to allow direct
rendering with SW decoders. For that you need to be able to permanently
map a GPU buffer to the CPU and give this buffer to the decoder
You'll need to check if it's possible with MoltenVk or Metal.
For information, we can't do it with OpenGL since this feature was added
in OpenGL 4.4 and Apple stopped updating the OpenGL  in macOS/iOS (that
is stuck to OpenGL 3 or so).
On Tue, Mar 20, 2018, at 16:15, zhzhzoo zhang wrote:
> Hello everybody,
> I am a first year graduate from Peking University major in math.
> I started to take part in algorithm competitions at grade 7, so I
> am very well trained in algorithms and data structures and of
> course coding.> I am especially interested in the idea `libplacebo Integration &
> Improvement', in the description it seems integration and improvement
> would be assigned to two students, and I want to do the improvement
> part. (possibly because I want to learn some graphics.) I successfully
> compiled libplacebo, and looked through its issues. There says its
> renderer needs more tests while other parts are fairly covered. So is
> this the reason why libplacebo isn't production-ready? I want to
> implement Metal support because I use a mac and hope my computer can
> be supported. Apart from these, what else features for libplacebo are
> needed? (i.e. what does the word `missing features' on the idea page
> refer to?) Thank you very much!> 
> Regards,
> Zhang Shuai.
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