I can see that iPhone 3GS and iPad1 support 8 texture units. I wish to know how far back I could rely on support for 8 texture units on the desktop. I know that my old 2006 iMac only had 4 units with an ATI X1600 graphics card (128mb vram). So I’m maybe guessing, anything made in the last 5 years? But is that too broad, maybe only 3 years? I can’t seem to find this data anywhere and I need to know if it’s a wise move to ditch trying to squeeze things into 4 texture units.
Does anyone know about this? What age computers support 8 texture units, where most of those computers support it (not just a few)?
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