About automatic disable of LoD mode when the brushes are very small

[Raghavendra Kamath]

Hello,

The thought was to disable instant preview (LOD) when it is not required automatically , for example in small basic and less resource intensive brushes,
I am assuming we sort of know what parameters effect the speed of brushes e.g size above certain range or precision settings  etc. So can't we trigger instant preview when the preset parameter crosses a certain threshold.

This is just a suggestion, there is an option to switch off the preview when not required but IMO when a person is drawing he normally just grabs a brush and paints , it will be some time to get trained to remember enabling Instant preview whenever he uses larger brushes.
Simply said instant preview is there to enhance user experience when the user is drawing with larger and heavy presets , so by enabling it on smaller basic brushes we are in some way doing double work by adding a preview when in fact they work smoothly without any enhancement.

This was my thought, any suggestion or debate is welcome.

On Saturday 19 Dec 2015 12:17:51 PM Dmitry Kazakov wrote:
> Hi, all!
> 
> Yesterday on IRC Raghavendra suggested quite an interesting idea about the
> optimization of the Instant Preview mode. The idea sounded like that:
> 
> "What if we automatically disable Instant Preview for the brushes when they
> are small enough to be painted without LoD, directly on the canvas. This
> would prevent quite a noisy flickering on the canvas, when the update it
> finished."
> 
> I though about it. Technically, I can implement this this feature. It is
> possible to switch off LoD almost on the fly. But the main question is the
> following:
> 
> "How would we decide if the brush is slow or fast?"
> 
> At the moment we cannot know if the brush is slow or fast without running
> the stroke. And if we have already started the LoD stroke, we cannot switch
> it to original one seamlessly. The original stroke should start from the
> very beginning. So how should we know if LoD should be activated for this
> particular preset or not?
> 
> Basically, the user already has an option to choose whether the preset
> should be run in LoD or not [0]. Should we do any automatic helping for him?
> 
> 
> [0] - https://userbase.kde.org/Krita/Manual/BrushEngines/InstantPreview
> 
> 
> PS:
> This letter is more like a heap of thoughts, so any comments are welcome! :)
> 
> -- 
*/Raghavendra Kamath/*
/Illustrator /
/9867272640/
/raghukamath.com[1] /

--------
[1] www.raghukamath.com
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