The glLoadIdentity function replaces the current matrix with the identity matrix.

glLoadIdentity该函数的功能是重置当前指定的矩阵为单位矩阵.

函数原型：void glLoadIdentity( void);

Remarks（备注：）The glLoadIdentity function replaces the current matrix with the identity matrix. It is semantically equivalent to calling glLoadMatrix with the identity matrix

glLoadIdentity该函数的功能是重置当前指定的矩阵为单位矩阵.在语义上，其等同于用单位矩阵调用glLoadMatrix。

but in some cases it is more efficient.

但是，在一些情况下，glLoadIdentity更加效率。

The following functions retrieve information related to glLoadIdentity:

下面是一些与glLoadIdentity相关的函数信息：

glGet with argument GL_MATRIX_MODE

glGet with argument GL_MODELVIEW_MATRIX

glGet with argument GL_PROJECTION_MATRIX

glGet with argument GL_TEXTURE_MATRIX

Error Codes（错误代码）：

The following is the error code and its condition.

GL_INVALID_OPERATION 　glLoadIdentity was called between a call to glBegin and the corresponding call to glEnd.