UNTITLED LOCAL UNTITLED
NAME
glutSetOption -- Allows you to set some general state/option variables.
LIBRARY
OpenGLUT - state
SYNOPSIS
#include <openglut.h>
void
glutSetOption(GLenum eWhat, int value);
PARAMETERS
eWhat Enumerated parameter ID.
value New value.
DESCRIPTION
Stores the value into a state variable named by eWhat.
Allowable eWhat IDs are:
- GLUT_ACTION_ON_WINDOW_CLOSE
Controls what happens when a window is closed by the user or system. GLUT_ACTION_EXIT will immediately exit the application (default).
GLUT_ACTION_GLUTMAINLOOP_RETURNS will immediately return from the main loop. GLUT_ACTION_CONTINUE_EXECUTION will contine execution of
remaining windows.
- GLUT_INIT_DISPLAY_MODE
An alternate way to set the display mode for a new window.
- GLUT_INIT_WINDOW_HEIGHT
An alternate way to set the height of new windows.
- GLUT_INIT_WINDOW_WIDTH
An alternate way to set the width of new windows.
- GLUT_INIT_WINDOW_X
An alternate way to set the initial horizontal position of new windows.
- GLUT_INIT_WINDOW_Y
An alternate way to set the initial vertical position of new windows.
- GLUT_RENDERING_CONTEXT
Set to either GLUT_CREATE_NEW_CONTEXT or GUT_USE_CURRENT_CONTEXT to indicate whether to share the current OpenGL rendering context with
new windows.
- GLUT_WINDOW_CURSOR
Attempt to set the current window 's current cursor as if by glutSetCursor().
SEE ALSO glutGet(3)glutDeviceGet(3)glutGetModifiers(3)glutLayerGet(3)glutDestroyWindow(3)glutMainLoop(3)glutInitDisplayMode(3)glutInit(3)glutInitWindowSize(3)glutInitWindowPosition(3)glutSetCursor(3)
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UNTITLED LOCAL UNTITLED
NAME
glutInitDisplayMode -- Set the window creation display mode.
LIBRARY
OpenGLUT - window
SYNOPSIS
#include <openglut.h>
void
glutInitDisplayMode(unsigned int displayMode);
PARAMETERS
displayMode Requested display mode bitmask.
DESCRIPTION
glutInitDisplayMode() allows you to control the mode for subsequent OpenGLUT windows.
Allowable displayMode is a combination of:
- GLUT_RGB
Red, green, blue framebuffer.
- GLUT_RGBA
Red, green, blue, alpha framebuffer.
- GLUT_INDEX
Indexed color framebuffer.
- GLUT_SINGLE
Single-buffered mode.
- GLUT_DOUBLE
Double-buffered mode.
- GLUT_ACCUM
Accumulation buffer.
- GLUT_ALPHA
Alpha channel.
- GLUT_DEPTH
Depth buffering.
- GLUT_STENCIL
Stencil buffering.
- GLUT_MULTISAMPLE
Multisampling mode. (not always available)
- GLUT_STEREO
Left and right framebuffers.
- GLUT_LUMINANCE
Greyscale color mode.
Additionally, the following experimental features are implemented:
- GLUT_OFFSCREEN
Offscreen windows are very much like onscreen windows that have been dragged off of the edge of the screen. The biggest issue is that off-
screen 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 GLUT_OFFSCREEN windows do), and there is no way to drag an offscreen window onscreen for user interaction.
- GLUT_BORDERLESS
Borderless windows are very experimental, and their precise behavior is not set in stone. See also glutCreateMenuWindow().
The following are defaults :
- GLUT_RGB
- GLUT_SINGLE
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
GLUT_OFFSCREEN windows do not work with nVidia cards/drivers. (Both Win32 and X11)
GLUT_BORDERLESS 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)
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