From: Iago Toral Quiroga <ito...@igalia.com>
The same we do in the FS NIR backend, only that here we need to consider
the number of components in the condition and adjust the swizzle
accordingly.
---
src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
diff --git a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
index 3259290..5a5c1ca 100644
--- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp
@@ -282,7 +282,21 @@ vec4_visitor::nir_emit_cf_list(exec_list *list)
void
vec4_visitor::nir_emit_if(nir_if *if_stmt)
{
- /* @TODO: Not yet implemented */
+ /* First, put the condition in f0 */
+ src_reg condition = get_nir_src(if_stmt->condition, BRW_REGISTER_TYPE_D, 1);
+ vec4_instruction *inst = emit(MOV(dst_null_d(), condition));
+ inst->conditional_mod = BRW_CONDITIONAL_NZ;
+
+ emit(IF(BRW_PREDICATE_NORMAL));
+
+ nir_emit_cf_list(&if_stmt->then_list);
+
+ /* note: if the else is empty, dead CF elimination will remove it */
+ emit(BRW_OPCODE_ELSE);
+
+ nir_emit_cf_list(&if_stmt->else_list);
+
+ emit(BRW_OPCODE_ENDIF);
}
void
--
2.1.4
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