leftbu(3G)leftbu(3G)NAME
leftbu, rightb - enables and disables drawing to the left/right buffer
FORTRAN 77 SPECIFICATION
subroutine leftbu(bool)
logical bool
subroutine rightb(bool)
logical bool
PARAMETERS
bool is either .TRUE. or .FALSE..
.TRUE. enables updating the left/right buffer.
.FALSE. disables updating the left/right buffer.
By default, leftbu is TRUE and rightb is FALSE.
DESCRIPTION
The normal framebuffer can be configured for stereo buffering (see
stereo). When this is done in single buffer mode, two color buffers are
created, one for the left-eye view and one for the right-eye view. When
this is done in double buffer mode, four color buffers are created:
front-left, front-right, back-left, and back-right. In single buffer
mode leftbu controls whether drawing is enabled in the left buffer, and
rightb controls whether drawing is enabled in the right buffer. In
double buffer mode, the front-left buffer is enabled for drawing if both
frontb and leftbu are true, and the back-left buffer is enabled for
drawing if backbu and leftbu are true. Likewise, the front-right buffer
is enabled for drawing if both frontb and rightb are true, and the back-
right buffer is enabled if both backbu and rightb are true.
leftbu and rightb are ignored when the normal buffer is not configured
for stereo buffering.
leftbu and rightb, should be called only while the draw mode is NORMAL.
After each call to gconfi, leftbu is enabled and rightb is disabled.
SEE ALSO
backbu, frontb, monobu, stereo
NOTES
IRIS-4D G, GT, GTX, VGX, and VGXT models, the Personal Iris, Indigo
Entry, Indy, XL, XS, XS24, XZ, Elan and Extreme systems do not support
leftbu or rightb.
At most four color buffers, such as front-left, front-right, back-left,
back-right, and zdraw, can be rendered into simultaneously on the IRIS-4D
RealityEngine model.
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leftbu(3G)leftbu(3G)
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