[Mesa-dev] [Bug 85419] Assertion fail with triangle strips

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Oct 28 10:21:56 PDT 2014


https://bugs.freedesktop.org/show_bug.cgi?id=85419

--- Comment #5 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to James Evans from comment #2)
> Thanks for the tip with '~0'  I was unaware of that.  I only used '0xffff'
> because that was what was used in the red book examples.  
I suspect they were using ushort indices (or they just didn't care since it
should still work correctly just possibly the driver has to bend over backwards
if the hw doesn't support arbitrary index).

> I changed my code to use '~0' and now the latest version of the Mesa drivers
> (10.3.1) are matching the previous versions of Mesa.
> 
> I am still seeing alternate triangle strips having their front facing
> definitions reversed.
Hmm ok that would point to two separate bugs then actually...

> I will work on getting a free standing compilable code example as soon as I
> can.  In the mean time I am attaching a screen shot and apitrace.

I'll give the apitrace a look.

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