readcomponent(3G) readcomponent(3G)
NAME
readcomponent - sets the component source within the framebuffer source
for pixels that various routines read, useful primarily for monochrome
image processing.
C SPECIFICATION
void readcomponent(long mode)
PARAMETERS
src expects a symbolic constant that identifies the pixel component
that is to be used:
RCABGR Indicates that all 4 frame buffer components, ABGR should
be transferred. This is the default.
RCALPHA selects the alpha channel of the current framebuffer
selected by readsource.
RCBLUE selects the blue channel of the current framebuffer
selected by readsource.
RCGREEN selects the green channel of the current framebuffer
selected by readsource.
RCRED selects the red channel of the current framebuffer selected
by readsource.
DESCRIPTION
readcomponent specifies the component source buffer from the pixel source
buffer that rectcopy, readpixels, readRGB, rectread, lrectread, and
fbsubtexload use.
SEE ALSO
lrectread, readpixels, readRGB, rectcopy, fbsubtexload
NOTES
This subroutine is available only in immediate mode and only on
RealityEngine systems running 5.0.1 or later.
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