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 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. Note that color index modes
are not supported on Mac OS X.
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 mul-
tisampling 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 con-
verted to an index between zero and glutGet(GLUT_WINDOW_COL-
ORMAP_SIZE)-1 and looked up in a per-window color map to deter-
mine the color of pixels within the window. The initial col-
ormap 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, sub-
windows, 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 destina-
tion 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(3), glutCreateWindow(3), glutInitDisplayString(3)
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT 3.7 glutInitDisplayMode(3GLUT)
Mac OS X 10.6 - Generated Thu Sep 17 20:20:40 CDT 2009