What does yellow tint mean when using “color inconsistent images” on iPhone / iOS

Question

therefore - I have included “color inconsistent images” to improve drawing performance in our application. The documentation states:

Overlay magenta on images whose original pixels do not match the destination pixels

I do not know what yellow means. (There is a “Color Screen-Rendering” option that uses yellow ... "Does it also include color images?")

Somebody knows?

TIA

Answer 1

Magenta overlays are caused by subpixel misalignment, and yellow overlays are caused by stretching. Prior to iOS 4, tools used magenta for both.