perform a component-wise greater-than comparison of two vectors
bvec2 greaterThan(ivec2 x, ivec2 y)bvec3 greaterThan(ivec3 x, ivec3 y)bvec4 greaterThan(ivec4 x, ivec4 y)bvec2 greaterThan(vec2 x, vec2 y)bvec3 greaterThan(vec3 x, vec3 y)bvec4 greaterThan(vec4 x, vec4 y)x: Specifies the first vector to be used in the comparison operation.y: Specifies the second vector to be used in the comparison operation.greaterThan returns a boolean vector in which each element i is computed as x[i] > y[i].