[squeak-dev] Proposal for new BitBlt rules (was: We need to talk about graphics)

David T. Lewis lewis at mail.msen.com
Sun Jul 12 17:58:56 UTC 2020

Changing the subject line to focus on a specific proposal by Juan Vuletich
for an enhancement to BitBlt rules.

The idea originated from discussion on the Cuis list, and the proposal
is documented in an opensmalltalk-vm issue here:


While I am generally familiar with VM issues, I have no experience with
BitBlt and I am not sure exactly what needs to be done to make this
happen. There are VM (plugin) changes needed, and some image side support
will needed as well (at least for fallback code in the image).

So - who knows how to make this happen, and how do we make it so?


On Fri, Jul 03, 2020 at 10:32:17PM +0200, Hilaire wrote:
> Le 03/07/2020 ?? 22:21, David T. Lewis a ??crit??:
> >>Juan proposed these primitives to speed up the rendering of
> >>VectorGraphics Widget Morph.
> >I remember a discussion about that, though I don't have a link to it. It
> >sounds like we need to follow up on this and make something happen.
> Here it is:
> https://github.com/OpenSmalltalk/opensmalltalk-vm/issues/505
> -- 
> Dr. Geo
> http://drgeo.eu
> https://pouet.chapril.org/@hilaire


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