6.2. Image processing functions

Once you understand the basics of image objects and samplers, you’re ready to invoke the functions that access them in code. OpenCL provides a number of image processing functions that can be run inside kernels, and they fall into three categories:

• Read functions— Return color values at a given coordinate

• Write functions— Set color values at a given coordinate

• Information functions— Provide data about the image object, such as its dimensions and pixel properties