Re: [Dri-devel] Radeon / Mesa problem?

[Keith W. <ke...@va...>]

Petr Sebor wrote:
> 
> Hello,
> 
> Yesterday I have pulled the latest code from the DRI CVS (from the main branch)
> and gave our engine a try and have got a crash almost immediately after the start.
> 
> I have dicovered that it crashes only when CVAs are enabled.
> 
> After a while I was able to get a backtrace of the crash - but was smart enough to forget
> the backtrace dump on my home machine; I will post it later today I promise. If I
> remember it correctly, it crashed somewhere in Mesa/src/interp_tmp.h... The vertex
> array in question had 5123 vertices in it, and the geometry was rendered with diffuse
> light and fogging turned on. (through DrawElements)

This is larger than the GL_MAX_ARRAY_LOCK_SIZE in mesa drivers, so mesa
*should* be falling back to unlocked processing for this array.  I'll run some
tests to investigate this usage.

> I hope that it is not an app bug since it runs well on nv server, xig (demo) server
> and windows ICDs as well.
> 
> Is there any known problem with bigger vertex arrays? Please let me know what to test,
> I will be glad to help make Mesa/DRI more stable.

Please try and find out if the crash still occurs when you have <3000 vertices
in your array.

Keith