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Fix post-slice self-invalidation on custom multi-extruder printers

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This commit is contained in:
SoftFever
2026-07-27 00:25:59 +08:00
parent 7a378d2fc4
commit bc016af1c9
6 changed files with 240 additions and 10 deletions
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46
tests/libslic3r/test_toolordering_nozzle_group.cpp
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@@ -500,6 +500,52 @@ TEST_CASE("Re-applying an unchanged config after slicing keeps the result valid"
REQUIRE(print.is_step_done(psSlicingFinished));
}
TEST_CASE("A degenerate process variant map on a custom multi-extruder printer slices to a stable result", "[Print][Regression]")
{
// Non-BBL multi-extruder printers get machine-scope variant columns synthesized on preset
// load (extend_extruder_variant), but nothing ships process-scope print_extruder_id /
// print_extruder_variant: presets and 3mf project configs carry the length-1 defaults. The
// apply-time expansion must synthesize the process columns from extruder_variant_list;
// otherwise the failed per-extruder lookups collapse the per-extruder retract overrides
// during slicing and the post-slice re-apply invalidates every fresh result, forever.
DynamicPrintConfig config = DynamicPrintConfig::full_print_config();
config.option<ConfigOptionFloats>("nozzle_diameter", true)->values = {0.4, 0.4, 0.4, 0.4, 0.4};
config.set_num_extruders(5);
// per-extruder machine values that a first-slot collapse would destroy
config.option<ConfigOptionPercents>("retract_before_wipe", true)->values = {100., 70., 70., 70., 100.};
config.option<ConfigOptionEnumsGeneric>("z_hop_types", true)->values = {zhtSlope, zhtNormal, zhtNormal, zhtNormal, zhtSlope};
// filament presets carry the nullable override twins (all-nil = "no override"); they are what
// routes the machine values through apply_override in the in-slice override recompute
config.option<ConfigOptionPercentsNullable>("filament_retract_before_wipe", true)->values =
std::vector<double>(5, ConfigOptionPercentsNullable::nil_value());
config.option<ConfigOptionEnumsGenericNullable>("filament_z_hop_types", true)->values =
std::vector<int>(5, ConfigOptionEnumsGenericNullable::nil_value());
config.option<ConfigOptionFloats>("filament_diameter", true)->values = std::vector<double>(5, 1.75);
config.option<ConfigOptionStrings>("filament_colour", true)->values = {"#FF0000", "#00FF00", "#0000FF", "#FFFF00", "#00FFFF"};
config.option<ConfigOptionInts>("filament_map", true)->values = {1, 2, 3, 4, 1};
Model model;
model.add_object("cube", "", make_cube(20, 20, 20))->add_instance()->set_offset(Vec3d(100., 100., 0.));
Print print;
print.apply(model, config);
print.process();
REQUIRE(print.is_step_done(psSlicingFinished));
// BackgroundSlicingProcess reads the engine-computed maps back into the plate config after
// slicing; the next apply overlays that written-back state.
config.option<ConfigOptionInts>("filament_map", true)->values = print.get_filament_maps();
config.option<ConfigOptionInts>("filament_volume_map", true)->values = print.get_filament_volume_maps();
config.option<ConfigOptionInts>("filament_nozzle_map", true)->values = print.get_filament_nozzle_maps();
auto status = print.apply(model, config);
REQUIRE(status == PrintBase::APPLY_STATUS_UNCHANGED);
REQUIRE(print.is_step_done(psSlicingFinished));
// the per-extruder machine values must survive the in-slice override recompute
REQUIRE(print.config().retract_before_wipe.values == std::vector<double>({100., 70., 70., 70., 100.}));
REQUIRE(print.config().z_hop_types.values == std::vector<int>({zhtSlope, zhtNormal, zhtNormal, zhtNormal, zhtSlope}));
}
TEST_CASE("normalize_nozzle_map_per_layer makes per-filament assignments gap-free", "[MultiNozzle][H2C][Dynamic]")
{
SECTION("gaps inherit the last used nozzle, entries on used layers stay untouched") {