Salvador Bayarri. Univ. Valencia (Salvador.Bayarri++at++uv.es)
Mon, 24 Nov 1997 20:14:42 GMT
My point is the following one. I would like to get accurate timing
information about user events, especially about key strokes, and also
about the precise moment where the user can start seeing a new frame,
that is, the time when the new frame is actually presented in the
display.
In the first case, the device events, I wonder if there is in
the GL or X system any function to directly check the state of the device,
like there was the 'Boolean getbutton(device)' function in IRIS GL.
In that case I could perform a periodic checking with the desired
time accuracy.
Otherwise, is there any timing information associated to events in
OpenGL or X events that can be retrieved?
Concerning the new visible frame timing, I'm aware that the new frame
becomes visible at one of the video updates, but I don't see any easy way
to know exactly which of them and associate time information to it.
Any information or reference would be appreciated for ever...
Salva
----------------------------------------------------
Dr.Salvador Bayarri
Dept.Informatica y Electronica. Grupo de Gráficos 3D.
Instituto de Trafico y Seguridad Vial (INTRAS)
Universitat de Valencia
e-mail: Salvador.Bayarri++at++uv.es
Ph: +34 6 3601472
Fax: +34 6 3607366
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