On 05/07/2015 05:48 PM, Pohjolainen, Topi wrote: > On Tue, Apr 28, 2015 at 11:08:23PM +0300, Abdiel Janulgue wrote: >> Programming null constants with gather constant tables seems to >> be unsupported and results in a GPU lockup even with the prescribed >> GPU workarounds in the bspec. Found out by trial and error that >> disabling HW gather constant when the constant state for a stage >> needs to be nullified is the only way to go around the issue. > > Just a general question. We keep resource streamer itself always enabled > (except for blorp of course). Does it still do something meaningful without > gather constants or should we disable them both? >
The resource streamer is just an infrastructure containing the specific optimizations hw-generated binding tables and gather constants. The dependency below flows from left to right. RS_on ringbuffer --> hw-binding tables --> gather constants So switching on gather constants require HW-gen binding tables be enabled as well. But hw-generated binding table is not required to be switched off for gather constants to be turned off. The only problem with disabling both is the additional required state setup packets to tear-down and then re-enable everything again which increases the size of the command buffers for every 3D primitive -Abdiel _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
