intel/fs/gen12: Work around dual-source blending hangs in combination with SIMD32.

This applies the same work-around I commited as b84fa0b31e67
"intel/fs/gen11: Work around dual-source blending hangs in combination
with SIMD32." to Gen12, which seems to suffer from the same hardware
bug found empirically.  The failure mode seems to be identical.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/intel/compiler/brw_fs_visitor.cpp b/src/intel/compiler/brw_fs_visitor.cpp
index 794bb24645155022d46fc6791bea2e21fe3032d6..7e6bebcd62f831b27aaa0052c8f56b087d370256 100644 (file)
--- a/src/intel/compiler/brw_fs_visitor.cpp
+++ b/src/intel/compiler/brw_fs_visitor.cpp
@@ -539,9 +539,10 @@ fs_visitor::emit_fb_writes()
    inst->last_rt = true;
    inst->eot = true;
 
-   if (devinfo->gen == 11 && prog_data->dual_src_blend) {
+   if (devinfo->gen >= 11 && devinfo->gen <= 12 &&
+       prog_data->dual_src_blend) {
       /* The dual-source RT write messages fail to release the thread
-       * dependency on ICL with SIMD32 dispatch, leading to hangs.
+       * dependency on ICL and TGL with SIMD32 dispatch, leading to hangs.
        *
        * XXX - Emit an extra single-source NULL RT-write marked LastRT in
        *       order to release the thread dependency without disabling