https://bugs.freedesktop.org/show_bug.cgi?id=103634
--- Comment #1 from Roland Scheidegger sroland@vmware.com --- Created attachment 135335 --> https://bugs.freedesktop.org/attachment.cgi?id=135335&action=edit trace file captured with R600_TRACE
Here's the output of R600_TRACE when running ./nv_conditional_render-vertex_array. (It doesn't tell me much but there is indeed a SET_PREDICATION and a predicated draw between the last trace id reached and the first not reached one.)