Am Samstag, 28. Dezember 2002 07:03 schrieb thork:
> Hi everyone
> I am having some problems when I compile the cvs tree of DRI with SSE
> enabled (I juts #cvs co xc, two hours ago, but this is happening since a
> long time anyway)
> My PC: AMD Athlon(TM) XP1600+
> flags : fpu vme de tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 mmx fxsr sse syscall mmxext 3dnowext 3dnow
> Radeon VE QY, Linux 2.4.20, glibc 2.2.5
> glxinfo sais there is no problem and dri seems to be working fine, but
> when I do # glxgears (or any other 3D app) it sais
Are you sure you get it with glxinfo?
Or with "cubemap", "texdown"+"b key"?
Read the list.
It was introduces with the Mesa-4.0.4 to 5.0/5.1 transition (Mesa CVS and=20
> disabling TCL support
Due to your Radeon VE QL (no hardware TCL).
> Floating point exception
> GDB sais:
> Program received signal SIGFPE, Arithmetic exception.
> [Switching to Thread 1024 (LWP 14835)]
> 0x404175c7 in _mesa_test_os_sse_exception_support () from
Expected but with the above apps.
> and the _mesa_test_os_sse_exception_support() code sais in a comment
> /* Perform an SSE divide-by-zero to see if the operating system
> * correctly supports unmasked SIMD FPU exceptions. Signal handlers for
> * SIGILL and SIGFPE should have been set before calling this function,
> * otherwise this could kill the client application.
> does this mean there is a problem with Linux or with my CPU? I am using
> Linux 2.4.20 and this didn't use to happen whith 2.4.19.
Uhhh, the kernel number changed something for you.
Very weird. Most of us get it with 2.4.19 and 2.4.20+/2.5.xx ;-)
> When I compile DRI without SSE it works fine, poor performance, but it
You should run with MESA_NO_SSE=3D1 and get 3DNow!.
Shouldn't be much slower 'cause it is the same core engine and works for=20
> Sorry for my super english, and thanks
> Esteban Fuentes, Republica Independiente de Magallanes
Hey, we're all from around the world ;-)
Happy New Year!
Graduate Student, Computer Science
University of Hamburg
Department of Computer Science
@home: Dieter.Nuetzel at hamburg.de (replace at with @)