drawImage

Paint an XObject Image under ctm. PDF defines the image's bounds as the unit square (0..1, 0..1); the CTM already encodes the scale + position. Backends that can decode image paint the pixels; others draw a placeholder rather than throw.

Paint an XObject Image as drawImage does, composited with blendMode. The blend mode of the graphics state applies to an image as to every other paint (ISO 32000-1, 11.3.5).

The default paints the image with drawImage inside an isolated transparency group that composites with blendMode. A group that holds one paint composites as that paint does, so the result is the same, only slower. A canvas that blends images itself overrides this, and its drawImage then calls this with KiteBlendMode.Normal.

The renderer calls this overload only for a blend mode other than Normal. A wrapper that delegates with by must override both overloads: Kotlin sends an overload that the wrapper does not override straight to the wrapped canvas.