pfLPointState problem

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ihawkes2++at++csc.com
Mon, 6 Sep 1999 13:02:21 +1000

Hi,
When I set the intensity of a pfLPointState to 0.0f, I am getting a segmentation
fault in the draw process. The problem occurs using IRIX 6.5 and Performer 2.2.1
on an O2. The light point state was originally created by the OpenFlight loader.

The same code works without any problems using IRIX 6.5 and Performer 2.2.1 on
an Onyx2 system.

The following call stack was extracted from the core dump:
drawX_LIGHT_POINTS_CvVv() ["gspoint.C":652]
drawX_POINTS_CvVv(<stripped>) ["gspoint.C":390]
pfDispList::pr_caseDL_DRAW_GSET_GSTATE() ["pfGeoSet.h":613]
pfDispList::pr_drawFlat(<stripped>) ["pfDispList.C":3858]
pfDispList::draw() ["pfDispList.C":660]
pfChannel::pf_drawScene() ["pfChannel.C":2137]
pfChannel::pf_draw() ["pfChannel.C":2112]
pfDraw() ["pfProcess.C":6348]
ccExecutionControl::_draw(this = 0x5802e480, channel = 0x586fa8c0)
["ccExecutionControl.C":870]
ccExecutionControl::_drawCallback(channel = 0x586fa8c0, userData = 0x0)
["ccExecutionControl.C":1230]
pfChannel::pf_callDrawFunc() ["pfChannel.C":2194]
doDraw() ["pfProcess.C":6200]
mpDraw() ["pfProcess.C":6890]
pfConfig() ["pfProcess.C":2828]
ccExecutionControl::configure(this = 0x5802e480, defaultConfigFile = 0x102fc000
= "avMain.cfg", argc = 1, argv = 0x7fff2e94) ["ccExecutionControl.C":213]
main(argc = 1, argv = 0x7fff2e94) ["avMain.C":60]
__start(<stripped>) ["crt1text.s":177]

I have found a report of the same problem in the archives (21 May, 1998), but
unfortunately there was no reply stored. Is the O2 behaviour a known problem, or
am I doing something wrong?

In the meantime, I have worked around the problem by just setting the intensity
to a very low non-zero value.

Thanks,
Ian Hawkes

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