What does this MR do and why?
I hit a problem running a set of lvp caselists with dEQP-VK.transform_feedback.simple.draw_indirect_endqueryindexed_streamid_0_16,Crash This was crashing due to assert(setup->viewport_index_slot < 0); in try_update_scene_state This was because a previous draw had set viewport index slot to 2, but a clear then draw sequence never resets it, so the clear gets a scene, and when the subsequent flush happens for that scene, the viewport_index_slot is never updated. It only gets updated on draws. This just resets it as lp_setup_update_state will always pick up the correct one for the next draw. Cc: mesa-stable