//AFTER USE()
func SetModelMatrix(m *mat4.Mat4) {
GUsedProgram.SetModelMatrix(m)
GUsedProgram.SetNormalMatrix(m.Mat3().Transpose())
m = m.Mul(GViewMatrix)
GUsedProgram.SetModelViewMatrix(m)
m = m.Mul(GProjectionMatrix)
GUsedProgram.SetModelViewProjectionMatrix(m)
}
func (p *Program) UniformMat4(name string, m *mat4.Mat4) {
loc := p.GetUniformLocation(name)
loc.UniformMatrix4fv(m.Fv32(), 1, false)
}