WebGL Square Points
Swipe Up or Down Over the Point
This simple WebGL example draws default square points. Microsoft browsers haven't implemented point size.
Testing reveals some versions of Internet Explorer for Windows PCs and Windows Phone 8.1 support a maximum point size of one only. In other words each point displays with just one pixel. Very small points render. Apparently WebGL specifications call for one pixel point size as a minimum. Therefore Internet Explorer remains WebGL 1.0 compliant.
However the point examples work fine with iPhone 6 Safari, Android Chrome, as well as Firefox, Chrome, and Microsoft Edge on Windows 10.
One work around, for older browsers, involves preparing circular or square shapes with
vertices or textures. Draw with
TRIANGLES rather than
Call the WebGL method
as follows. Number
e.nCount represents the number
of vertices to render and
e.nOffset represents the
location within the Vertex Buffer Object to begin
gl.drawElements ( gl.TRIANGLES, e.nCount, gl.UNSIGNED_SHORT, e.nOffset );
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