16.3.2 Optimizing Transformations

OpenGL implementations are often able to optimize transform operations if the matrix type is known. Follow these guidelines to achieve optimal transform rates:

• Use glLoadIdentity() to initialize a matrix, rather than loading your own copy of the identity matrix.
• Use specific matrix calls such as glRotate\*(), glTranslate\*(), and glScale\*() rather than composing your own rotation, translation, or scale matrices and calling glLoadMatrix() and/or glMultMatrix().