WebGPU Multisampling Demo
If you uncheck the "Use Multisampling" checkbox, you will see that the edges of the disks now have a more jagged appearance. The effect is subtle. It will be more obvious if you increase the magnificaion of the web page.
The effect might be less visible when animation is turned on, but again, the effect is very clear — and interesting — on a highly magnified web page.
Multisampling is a kind of antialiasing. Without multisampling, WebGPU gets a color for a pixel by evaluating the fragment shader at one point in that pixel. With multitasking, it evaluates the fragment shader at several points in the pixel and averages the results. This can cut down on "jaggies" and give a smoother appearance.
