Antialias for images, curves and fonts

[edvv]

Dear WinObjC Engineers:

I notice that compositing for UIImage is not re-sampled in a interpolative way (misnomer: antialiased). This is an integral feature for displaying a high resolution image on different DPI devices (normal and retina) instead of using the @2x , @3x, etc. method. I have the following requests:

• CGContextSetShouldAntialias() be implemented.

• UIImage apply a resampling filter better than the current one.

• Antialiased fonts.

Sincerely,

Ed

Reference:

void CGContextSetShouldAntialias(CGContextRef ctx, bool shouldAntialias) {
UNIMPLEMENTED();
ctx->Backing()->CGContextSetShouldAntialias(shouldAntialias);
}

[edvv]

Perhaps this is all referenced in issue #1177 . If it is then please feel free to close this issue.

[rajsesh]

This is likely not covered by #1177, adding this to the backlog.

[rajsesh]

CGContextSetShouldAntialias(), etc is different from UIImage resampling, it would be best to break these asks. We can use this to cover anti-alias.

[DHowett-MSFT]

The work backing this is tracked by #1391. Image interpolation is in CGD2D as of #1557, and will merge into develop when CGD2D does.