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intel/fs: Do a stalling MFENCE in endInvocationInterlock()

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Fixes: 939312702e "i965: Add ARB_fragment_shader_interlock support"
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand
2019-05-22 12:36:17 -05:00
parent 859de4a748
commit 9e403dc56e
5 changed files with 28 additions and 8 deletions
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5
src/intel/compiler/brw_fs_generator.cpp
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@@ -2071,13 +2071,14 @@ fs_generator::generate_code(const cfg_t *cfg, int dispatch_width)
break;
case SHADER_OPCODE_MEMORY_FENCE:
brw_memory_fence(p, dst, src[0], BRW_OPCODE_SEND);
assert(src[1].file == BRW_IMMEDIATE_VALUE);
brw_memory_fence(p, dst, src[0], BRW_OPCODE_SEND, src[1].ud);
break;
case SHADER_OPCODE_INTERLOCK:
assert(devinfo->gen >= 9);
/* The interlock is basically a memory fence issued via sendc */
brw_memory_fence(p, dst, src[0], BRW_OPCODE_SENDC);
brw_memory_fence(p, dst, src[0], BRW_OPCODE_SENDC, false);
break;
case SHADER_OPCODE_FIND_LIVE_CHANNEL: {