GL_MODELVIEW

OpenGL OpenGL: Basic Coding
1

How I can set a view matrix without glu, simply with 4x4 matrix?

2

Many ways.

glMatrixMode (GL_MODELVIEW);
glLoadMatrixf (my_4x4_matrix);

Or…

glMatrixMode (GL_MODELVIEW);
glFrustum (l, r, b, t, n, f);

Or even (for GLSL):

glUniformMatrix4fv (…etc…);

3

Or…

glMatrixMode (GL_MODELVIEW);
glFrustum (l, r, b, t, n, f);

That’s not a view matrix; that’s a projection matrix. And those should generally go in the GL_PROJECTION stack.