re need shading program example in x i think the original post was searching for existing implementations of f i gouroud shading of triangles this is fairly complex to do with plain x simpler shading models are implemented already f i in x d ask archie where to get the latest version for gouroud a fast implementation will be possible utilizing some extension only either mit shm to do the shade in an image and fast update the window with it or pex opengl which should be able to shade themselves the portable vanilla x way would be to shade in a normal ximage and use xputimage what would be good enough to do static things as f i fractal landscapes or such stuff to speak about povray the x previewer that comes with the original source package is not that good especially in speed protocol friendlyness and icccm compliance have a look on x q my own preview code it is on pub gfx ray misc x q the readme states the points where it is better than xwindow c from povray the version i have is using the x q code instead of the default x windows code i have it currently running on a dec alpha running openvms axp and so far have been pretty impressed the only side effect of x q is that it requires xstdcmap best be run before it will work annoyning but not a show stopper patrick l mahan tgv window washer mahan tgv com waking a person unnecessarily should not be considered lazarus long a capital crime for a first offense that is from the notebooks of lazarus long
