Lavapipe performance question during interactive drawing

Mike Blumenkrantz michael.blumenkrantz at
Fri May 5 12:08:44 UTC 2023


Can you try commenting out the same lines from last time and see whether
that affects anything?


On Fri, May 5, 2023 at 7:30 AM George Karpathios <gkarpa1 at> wrote:

> Hi list,
> I'm using Lavapipe for Vulkan software rendering support in a modeling
> application. I notice a large performance hit (with any Mesa version) in
> the following scenario: The user clicks & drags the mouse in order to
> create a simple shape (e.g. plane, cube, sphere) dynamically and the result
> is being rendered (basic gray shading) in real-time alongside the movement
> of the mouse. Lavapipe seems to be struggling a bit to keep up with this
> action as the frame time goes up to over 1 second. On the other hand, on a
> more "static" scene I can get great fps (30-60) while panning/rotating a
> scene, after Mike Blumenkrantz's recent improvements (many thanks for those
> again!).
> I've uploaded a screenshot of the VS profiler showing the hot path at
>  and I'd appreciate hearing your thoughts on
> this. Thanks once more for your time.
> Best regards,
> George
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