Hi everyone,

I had written a povray patch for obtaining depth per pixel of an image some time
ago. I had used povray-3.7 and modified the tracetask.cpp in
(source/backend/render/tracetask.cpp) in the function TraceTask::Run() where I
was using all the time SimpleSamplingM0() and in this function I replaced the
line
 trace(x, y, GetViewData()->GetWidth(), GetViewData()->GetHeight(), col);
by
 trace(x, y, GetViewData()->GetWidth(), GetViewData()->GetHeight(), col,
depthVal); to obtain the depth. I have been using Jaime's office scene for
rendering and obtaining depth-map but I only observe that there are
discretization artifacts I observe in the depth. I have kept the image and the
depth file here at www.doc.ic.ac.uk/~ahanda/scene_and_depth.html . I am
wondering if this is due to very simple sampling method used for tracing? I am
not using any AntiAliasing options and jitter etc. to render that scene and
simply picking up the depth values returned by the trace function that's called
by SimpleSampleM0().


Thank you,

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