[squeak-dev] We need to talk about graphics

Hilaire hilaire at drgeo.eu
Fri Jul 3 16:15:17 UTC 2020

Le 30/06/2020 à 08:26, Stéphane Rollandin a écrit :
>> Is GPU& shader  support necessary/desirable:
>> yes if real-time rendering for thighs like games/VR are important, 
>> but in that case there
>> is a bigger problem jitter caused by GC,
> In the image I just uploaded two days ago and that one can get from 
> http://www.zogotounga.net/comp/squeak/rogue.htm the main feature is a 
> 2D real-time top-down game.
> I found that the GC-caused jitter was indeed a problem, but also that 
> the main culprit was the time it takes to simply paint an image which 
> is a surprisingly (to me) slow operation.
> That, plus the alpha-blending issue that was discussed on the VM list 
> a little ago, where Juan proposed two new primitives. 

Juan proposed these primitives to speed up the rendering of 
VectorGraphics Widget Morph.

Regarding graphics, Juan's work on Vector Graphics can be of interest 
for Squeak.


Dr. Geo

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