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nir: Group per-primitive outputs at the end for driver location assign.

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Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Acked-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13466>
This commit is contained in:
Timur Kristóf
2021-10-31 21:09:08 +01:00
committed by Marge Bot
parent f23f7ef316
commit 59860d4873
1 changed files with 10 additions and 1 deletions
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11
src/compiler/nir/nir_linking_helpers.c
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@@ -1406,7 +1406,16 @@ static void
insert_sorted(struct exec_list *var_list, nir_variable *new_var) insert_sorted(struct exec_list *var_list, nir_variable *new_var)
{ {
nir_foreach_variable_in_list(var, var_list) { nir_foreach_variable_in_list(var, var_list) {
if (var->data.location > new_var->data.location) { /* Use the `per_primitive` bool to sort per-primitive variables
* to the end of the list, so they get the last driver locations
* by nir_assign_io_var_locations.
*
* This is done because AMD HW requires that per-primitive outputs
* are the last params.
* In the future we can add an option for this, if needed by other HW.
*/
if (new_var->data.per_primitive < var->data.per_primitive ||
var->data.location > new_var->data.location) {
exec_node_insert_node_before(&var->node, &new_var->node); exec_node_insert_node_before(&var->node, &new_var->node);
return; return;
} }