Function glTexImage2DMultisampleCoverageNV 

pub unsafe extern "C" fn glTexImage2DMultisampleCoverageNV(
    target: GLenum,
    coverageSamples: GLsizei,
    colorSamples: GLsizei,
    internalFormat: GLint,
    width: GLsizei,
    height: GLsizei,
    fixedSampleLocations: GLboolean,
)