Comment Re:Almost, but not quite (Score 1) 264
Lifted from wiki:
Note that ATI X1000 series cards (e.g. X1900) don't have Vertex Texture Fetch, hence they do not fully comply with the VS 3.0 model. Instead, they offer a feature called "Render to Vertex Buffer (R2VB)" that provides functionality that is an alternative Vertex Texture Fetch.
The 'too new' argument has merit; in that, developers have likely stopped supporting R2VB along with AMD's dropping support for the line as of Cat 9.4.