glutInitDisplayMode (3) Linux Manual Page

glutInitDisplayMode – Set the window creation display mode.

Library

OpenGLUT – window

Synopsis

In openglut.h Ft void Fn glutInitDisplayMode unsigned int displayMode

Parameters

Bf Em
 displayMode Ef
    Requested display mode bitmask.

Description

glutInitDisplayMode() allows you to control the mode for subsequent OpenGLUT windows.

Allowable Bf Sy
 displayMode Ef
 is a combination of:

 –  Bf Sy
 GLUT_RGB Ef
 
Red, green, blue framebuffer.

 –  Bf Sy
 GLUT_RGBA Ef
 
Red, green, blue, alpha framebuffer.

 –  Bf Sy
 GLUT_INDEX Ef
 
Indexed color framebuffer.

 –  Bf Sy
 GLUT_SINGLE Ef
 
Single-buffered mode.

 –  Bf Sy
 GLUT_DOUBLE Ef
 
Double-buffered mode.

 –  Bf Sy
 GLUT_ACCUM Ef
 
Accumulation buffer.

 –  Bf Sy
 GLUT_ALPHA Ef
 
Alpha channel.

 –  Bf Sy
 GLUT_DEPTH Ef
 
Depth buffering.

 –  Bf Sy
 GLUT_STENCIL Ef
 
Stencil buffering.

 –  Bf Sy
 GLUT_MULTISAMPLE Ef
 
Multisampling mode. (not always available)

 –  Bf Sy
 GLUT_STEREO Ef
 
Left and right framebuffers.

 –  Bf Sy
 GLUT_LUMINANCE Ef
 
Greyscale color mode.

Additionally, the following Bf Li
 experimental Ef
  features are implemented:

 –  Bf Sy
 GLUT_OFFSCREEN Ef
 
Offscreen windows are very much like onscreen windows that have been dragged off of the edge of the screen. The biggest issue is that offscreen windows do not support subwindows. Other than that, onscreen windows that are dragged off of the edge may not store graphics that you render (while Bf Sy
 GLUT_OFFSCREEN Ef
  windows do), and there is no way to drag an offscreen window onscreen for user interaction.

 –  Bf Sy
 GLUT_BORDERLESS Ef
 
Borderless windows are very experimental, and their precise behavior is not set in stone. See also glutCreateMenuWindow().

The following are Bf Li
 defaults Ef
 :

 –  Bf Sy
 GLUT_RGB Ef
 
 –  Bf Sy
 GLUT_SINGLE Ef
 

Caveats

Some display mode features were introduced by OpenGLUT.

Not all features or combinations of features are valid for all platforms.

There is no way to change the display mode of an open window.

Bugs

Bf Sy
 GLUT_OFFSCREEN Ef
 windows do not work with nVidia cards/drivers.  (Both Win32 and X11)

Bf Sy
 GLUT_BORDERLESS Ef
 seems to vary by the window manager on X11, though twm (for example) performs very similarly to WIN32. But KDE’s window manager (for example) does not let you send keystrokes to borderless windows without OpenGLUT hacks.

See Also

glutCreateMenuWindow(3) glutInit(3) glutInitWindowSize(3) glutInitWindowPosition(3) glutInitDisplayString(3) glutSwapBuffers(3)