---
title: CGColorConversionInfoCreateFromList
framework: coregraphics
role: symbol
role_heading: Function
path: coregraphics/cgcolorconversioninfocreatefromlist
---

# CGColorConversionInfoCreateFromList

Creates a conversion between an arbitrary number of specified color spaces.

## Declaration

```occ
extern CGColorConversionInfoRefCGColorConversionInfoCreateFromList(CFDictionaryRef options, CGColorSpaceRef , CGColorConversionInfoTransformType , CGColorRenderingIntent , ...);
```

## Parameters

Parameters Returns A color conversion object, or nil if no conversion between the specified color spaces is allowed. Discussion To call this function you must pass a triplet of color space, transform type, and rendering intent for each color space in the chain of conversions. For example, the following code is equivalent to calling init(src:dst:): // convert from `src` to `dst` space with default intent CGColorConversionInfoCreateFromList(NULL,     src, kCGColorConversionTransformFromSpace, kCGRenderingIntentDefault,     dst, kCGColorConversionTransformToSpace,   kCGRenderingIntentDefault,     NULL); To extend this example to convert through an intermediate color space, insert another space/type/intent triplet between the src and dst lines, using the CGColorConversionInfoTransformType.transformApplySpace type. The listed color spaces must be calibrated color spaces (that is, not device-specific or indexed color spaces), and the list must contain at least two color spaces (that is, two triplets of space, type, and intent). You can use a color conversion object to create MPSImageConversion filters that perform GPU-accelerated color space conversion.

## See Also

### Creating a Color Conversion

- [init(src:dst:)](coregraphics/cgcolorconversioninfo/init(src:dst:).md)
- [init(optionsSrc:dst:options:)](coregraphics/cgcolorconversioninfo/init(optionssrc:dst:options:).md)
- [CGColorConversionInfoTransformType](coregraphics/cgcolorconversioninfotransformtype.md)