KonstantinSeurer
/
mesa
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

intel/compiler: Don't lower Mesh/Task I/O to temporaries 

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13661>
This commit is contained in:
Caio Oliveira 2021-10-29 12:10:00 -07:00 committed by Marge Bot
parent 18e1c9c542
commit fcc1ccf541
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
src/intel/compiler/brw_nir.c
View File

@ -921,12 +921,18 @@ brw_nir_link_shaders(const struct brw_compiler *compiler,
NIR_PASS_V(producer, nir_opt_combine_stores, nir_var_shader_out);
NIR_PASS_V(consumer, nir_lower_io_to_vector, nir_var_shader_in);
if (producer->info.stage != MESA_SHADER_TESS_CTRL) {
if (producer->info.stage != MESA_SHADER_TESS_CTRL &&
producer->info.stage != MESA_SHADER_MESH &&
producer->info.stage != MESA_SHADER_TASK) {
/* Calling lower_io_to_vector creates output variable writes with
* write-masks. On non-TCS outputs, the back-end can't handle it and we
* need to call nir_lower_io_to_temporaries to get rid of them. This,
* in turn, creates temporary variables and extra copy_deref intrinsics
* that we need to clean up.
*
* Note Mesh/Task don't support I/O as temporaries (I/O is shared
* between whole workgroup, possibly using multiple HW threads). For
* those write-mask in output is handled by I/O lowering.
*/
NIR_PASS_V(producer, nir_lower_io_to_temporaries,
nir_shader_get_entrypoint(producer), true, false);