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.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89580 --- src/mesa/drivers/dri/i965/brw_vec4_nir.cpp | 23 ++++++++++++++++++++++- 1 file changed, 22 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 1ec75ee..d81b6a7 100644 --- a/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp +++ b/src/mesa/drivers/dri/i965/brw_vec4_nir.cpp @@ -314,7 +314,28 @@ 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); + + int num_components = if_stmt->condition.is_ssa ? + if_stmt->condition.ssa->num_components : + if_stmt->condition.reg.reg->num_components; + + condition.swizzle = brw_swizzle_for_size(num_components); + + 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 _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
