OpenGL Programming Guide: The Official Guide to Learning OpenGL, Version 4.3, Eighth Edition

Sampler Parameters

Each sampler object represents a number of parameter that controls the way texels will ultimately be read from a texture object. The parameters of the sampler object are set using the glSamplerParameteri() and glSamplerParameterf() functions (for integer and floating-point parameters), and glSamplerParameteriv() and glSamplerParameterfv() functions (for vectors of integer and floating-point parameters). Their prototypes are given below.

void glSamplerParameter{fi}(GLuint sampler, GLenum pname,                         Type param );void glSamplerParameter{fi}v(GLuint sampler, GLenum pname,                         const Type* param );void glSamplerParameterI{i ui}v(GLuint sampler,                         GLenum pname,                         const ...