ajerimez wrote:
rscottdrysdale wrote:
josehill wrote:
rscottdrysdale wrote:
would one of those ZX boards significantly improve things on my 175MHz 4400? i see a board set for $100 on epay.
Make sure that it's XZ (I'm 99% sure that the reversal was a typo, but) Sun had a 3-D graphics boardset called ZX for the SPARCstations and SBus that won't fit in your Indy.
XZ is eqivalent to Indigo2 XZ (improved XZ) or Indigo1 Elan. It accelerates geometry processing and (and this is the biggie for applications that can use one) it has a hardware Z-buffer. It doesn't support hardware texturing, though, unlike the later, better IMPACT graphics for Indigo2.
FWIW almost all Silicon Graphics graphics setups have full OpenGL support in drivers - it's just that some of the functions are performed by the system's CPU.
The exceptions are the older IRIS-GL graphics (which have varying levels of OpenGL support from none (original IRIS graphics) to most but not everything (PowerVision VGX).
The other exception is, strangely enough, XS graphics, which, unless you plug in a hardware Z-buffer, can't do Z-buffer operations (unless a newer IRIX has fixed that - my information on the XS issue is older).