GPU Textures Cache and ROP units (likne on OpenGL) on OpenCL

Hi guys, anybody know, how to access hardware rasterizier (ROP) and textures chache memory (TMU) on OpenCL?
P.S.: on OpenGL this stuff used by default…

Rasterization is unavailable in OpenCL, texture units, suprisingly enough, are used when you access a cl_image through samplers.