<div class="gmail_quote">On Sun, Apr 11, 2010 at 9:32 AM, Luca Barbieri <<a href="mailto:luca@luca-barbieri.com">luca@luca-barbieri.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> IMHO what could be done is to add an explicit API for that instead ("set_vertex_attrib") and have a special vertex buffer index in the vertex element state that means "I'll call set_vertex_attrib for this element". As an additional step, "begin_draw", "end_draw" and "emit_vertex" could be added, allowing to implement glBegin/glVertexAttrib/glEnd directly over Gallium and getting rid of the vbo module, probably with significant performance gains. </blockquote></div> Oh please not another GL. -Marek