OpenGL offscreen rendering example

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offscreen_render combines several tools already present on the developer's toolbox into a single example of how to render an opengl image to a file, in this case in sgi image file format.

• C files:
  • offscreen_render.c
  • util.c
  • fromxwd_1.c
• include files:
  • util.h
• Makefile:
  • Makefile
• output file:
  • offscreen.rgb

offscreen.sgi is an SGI imagelib image file and can be viewed with ipaste.
offscreen.sgi can be converted to a postscript file using the TOPS(6D) utility (the tops man page lives in the eoe2.man.imagetools subsystem, and, of course, its source can be found in toolbox/src/haeberli/imgtools/tops.c).

• to execute: offscreen_render

• controls:
  • Esc -- quit/exit
  • LEFTARROW -- redraw
  • RIGHTARROW -- off screen render to file (offscreen.sgi)

Ann LaGrone, 1994