<li>perfmon - emit messages about AMD_performance_monitor</li>
<li>pix - emit messages about pixel operations</li>
<li>prim - emit messages about drawing primitives</li>
+ <li>reemit - mark all state dirty on each draw call</li>
<li>sf - emit messages about the strips & fans unit (for old gens, includes the SF program)</li>
<li>shader_time - record how much GPU time is spent in each shader</li>
<li>spill_fs - force spilling of all registers in the scalar backend (useful to debug spilling code)</li>