An option for the color format to use for intermediate results when rendering with the context.
- iOS 8.0+
- macOS 10.4+
- tvOS 9.0+
- Core Image
The value for this key is an
NSNumber object containing a
CIFormat value. The default working format is
RGBA8 for CPU rendering and
RGBAf for GPU rendering. For greater color precision, GPU rendering also supports the
RGBAh format, but this format requires twice as much memory and can be used only with color management enabled.