[Mesa3d-dev] FP exception in gl_x86_cliptest_points4()

[Brian P. <br...@pr...>]

If anyone has seen clipping problems in Mesa 3.1 or later on X86 systems
you might be interested in this.

I found that gl_x86_cliptest_points4() is raising an FP overflow
exception in some programs.  Disabling that function, by commenting
out the assignment near line 114 of Mesa/src/X86/x86.c:

#if 0   
   gl_clip_tab[4] = gl_x86_cliptest_points4;
#endif

stopped the exception.

So, if you've had clipping problems try this fix and let me know if
it solves the problem.

-Brian

PS: You can enable FP exception aborts in Mesa 3.3 with 'setenv MESA_DEBUG FP'
Normally, most (all?) FP exceptions on X86 Linux (other OSes?) are silently
ignored.