Specifies the source for pixels to be read by various subroutines.
void readsource(Int32 source)
SUBROUTINE READSO(source) INTEGER*4 source
The readsource subroutine specifies the exact pixel source (front buffer, back buffer, or z-buffer) that the rectcopy, readpixels, readRGB, and rectread subroutines use.
Note: This subroutine cannot be used to add to a display list.
|source|| The defined values for this parameter are listed in the following table:
This subroutine is part of GL in the AIXwindows Environment/6000 Version 1, Release 2 with AIXwindows/3D Feature.
BLITs to and from the z-buffer are currently inoperational on the POWER GXT1000 adapter.
When performing BLITs to and from the overlay planes on the GXT1000, the transparent pixel value on the GXT1000 is 255, not 0.
|/usr/include/gl/gl.h||Contains C language constant and variable type definitions for GL.|
|/usr/include/gl/fgl.h||Contains FORTRAN constant and variable type definitions for GL.|
Copying a rectangle of pixels with an optional zoom with the rectcopy subroutine.
Reading a rectangular array of pixels into host memory with the rectread subroutine.
AIX Graphics Library Overview, Reading and Writing Pixels, and Configuring the Frame Buffer.