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glutInitDisplayMode(3GLUT)           GLUT           glutInitDisplayMode(3GLUT)


NAME

       glutInitDisplayMode - sets the initial display mode.


SYNTAX


       void glutInitDisplayMode(unsigned int mode);


ARGUMENTS

       mode      Display mode, normally the bitwise {\m OR}-ing of GLUT
                 display mode bit masks.  See values below:

       GLUT_RGBA
               Bit mask to select an RGBA mode window. This is the default if
               neither GLUT_RGBA nor GLUT_INDEX are specified.

       GLUT_RGB
               An alias for GLUT_RGBA.

       GLUT_INDEX
               Bit mask to select a color index mode window. This overrides
               GLUT_RGBA if it is also specified.

       GLUT_SINGLE
               Bit mask to select a single buffered window. This is the
               default if neither GLUT_DOUBLE or GLUT_SINGLE are specified.

       GLUT_DOUBLE
               Bit mask to select a double buffered window. This overrides
               GLUT_SINGLE if it is also specified.

       GLUT_ACCUM
               Bit mask to select a window with an accumulation buffer.

       GLUT_ALPHA
               Bit mask to select a window with an alpha component to the
               color buffer(s).

       GLUT_DEPTH
               Bit mask to select a window with a depth buffer.

       GLUT_STENCIL
               Bit mask to select a window with a stencil buffer.

       GLUT_MULTISAMPLE
               Bit mask to select a window with multisampling support. If
               multisampling is not available, a non-multisampling window will
               automatically be chosen. Note: both the OpenGL client-side and
               server-side implementations must support the GLX_SAMPLE_SGIS
               extension for multisampling to be available.

       GLUT_STEREO
               Bit mask to select a stereo window.

       GLUT_LUMINANCE
               Bit mask to select a window with a ``luminance'' color model.
               This model provides the functionality of OpenGL's RGBA color
               model, but the green and blue components are not maintained in
               the frame buffer. Instead each pixel's red component is
               converted to an index between zero and
               glutGet(GLUT_WINDOW_COLORMAP_SIZE)-1 and looked up in a per-
               window color map to determine the color of pixels within the
               window. The initial colormap of GLUT_LUMINANCE windows is
               initialized to be a linear gray ramp, but can be modified with
               GLUT's colormap routines.


DESCRIPTION

       The initial display mode is used when creating top-level windows,
       subwindows, and overlays to determine the OpenGL display mode for the
       to-be-created window or overlay.

       Note that GLUT_RGBA selects the RGBA color model, but it does not
       request any bits of alpha (sometimes called an alpha buffer or
       destination alpha) be allocated. To request alpha, specify GLUT_ALPHA.
       The same applies to GLUT_LUMINANCE.

       The glutInitDisplayString routine provides a more powerful way to
       select frame buffer capabilities for GLUT windows.

GLUT_LUMINANCE IMPLEMENTATION NOTES
       GLUT_LUMINANCE is not supported on most OpenGL platforms.


SEE ALSO

       glutInit, glutCreateWindow, glutInitDisplayString


AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT                                  3.7           glutInitDisplayMode(3GLUT)

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