glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &count);
else if(is_version_at_least(1, 3))
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &count);
glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &count);
else if(is_version_at_least(1, 3))
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &count);