Whats holding ~100% D GUI back?

[Jab]

On Thursday, 28 November 2019 at 20:46:45 UTC, Ethan wrote:
> On Thursday, 28 November 2019 at 19:37:47 UTC, Jab wrote:
>> Do you have any more information on the topic? I remember 
>> digging through Qt and there are sections that completely 
>> avoid the GPU all together as it is too inaccurate for the 
>> computation that was required. Can't recall exactly what it 
>> was.
>
> This would have been an accurate statement when GPUs were 
> entirely fixed function. But then this little technology called 
> "shaders" was introduced to consumer hardware in 2001.
>
> GPUs these days are little more than programmable number 
> crunchers that work *REALLY FAST* in parallel.

It was Qt5, which is pretty recent, so no fixed pipelines are 
used.

That's kind of what I was surprised about looking through Qt. 
Quite a bit of it is still done on the CPU, things I wouldn't 
have expected. Which is why I was wondering if there was any more 
information on the topic.

IIRC GPUs are limited in what they can do in parallel, so if you 
only need to do 1 things for a specific job the rest of the GPU 
isn't really being fully utilized.