From 748e5dac72255583339af327af6741626e2ce0b0 Mon Sep 17 00:00:00 2001 From: Kenneth Graunke Date: Mon, 24 Jun 2019 15:09:51 -0700 Subject: [PATCH] intel/blorp: Disable sampler state prefetching on Gen11 Sampler state prefetching is broken on Gen11, and WA_160668216 says to disable it. Apparently sampler state prefetching also has basically zero impact on performance, so we don't need to worry there. i965, anv, and iris already handle this correctly, but we missed BLORP. Ideally the kernel should globally disable this by writing SARCHKMD, at which point we wouldn't have to worry about it. But let's be defensive and handle it ourselves too. v2: separate out from BTP workaround in case we change that eventually Reviewed-by: Anuj Phogat [v1] --- src/intel/blorp/blorp_genX_exec.h | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/intel/blorp/blorp_genX_exec.h b/src/intel/blorp/blorp_genX_exec.h index f3e64c56382..7a74b1d9d50 100644 --- a/src/intel/blorp/blorp_genX_exec.h +++ b/src/intel/blorp/blorp_genX_exec.h @@ -778,6 +778,10 @@ blorp_emit_ps_config(struct blorp_batch *batch, if (GEN_GEN == 11) ps.BindingTableEntryCount = 0; + /* SAMPLER_STATE prefetching is broken on Gen11 - WA_1606682166 */ + if (GEN_GEN == 11) + ps.SamplerCount = 0; + if (prog_data) { ps._8PixelDispatchEnable = prog_data->dispatch_8; ps._16PixelDispatchEnable = prog_data->dispatch_16; -- 2.30.2