public virtual void R_SetupGL( )
{
var x = r_newrefdef.x;
var x2 = r_newrefdef.x + r_newrefdef.width;
var y = vid.GetHeight() - r_newrefdef.y;
var y2 = vid.GetHeight() - (r_newrefdef.y + r_newrefdef.height);
var w = x2 - x;
var h = y - y2;
GL.Viewport(x, y2, w, h);
var screenaspect = ( Single )r_newrefdef.width / r_newrefdef.height;
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
MYgluPerspective(r_newrefdef.fov_y, screenaspect, 4, 4096);
GL.CullFace(CullFaceMode.Front);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
GL.Rotate(-90, 1, 0, 0);
GL.Rotate(90, 0, 0, 1);
GL.Rotate(-r_newrefdef.viewangles[2], 1, 0, 0);
GL.Rotate(-r_newrefdef.viewangles[0], 0, 1, 0);
GL.Rotate(-r_newrefdef.viewangles[1], 0, 0, 1);
GL.Translate(-r_newrefdef.vieworg[0], -r_newrefdef.vieworg[1], -r_newrefdef.vieworg[2]);
GL.GetFloat(GetPName.ModelviewMatrix, r_world_matrix.Array);
r_world_matrix.Clear();
if (gl_cull.value != 0F)
{
GL.Enable(EnableCap.CullFace);
}
else
{
GL.Disable(EnableCap.CullFace);
}
GL.Disable(EnableCap.Blend);
GL.Disable(EnableCap.AlphaTest);
GL.Enable(EnableCap.DepthTest);
}