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https://github.com/godotengine/godot
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Merge pull request #29988 from NathanWarden/lightmap_hint_size
Added a fallback size to the lightmap baker in case mesh lightmap hint sizes are 0,0
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commit
f5f7244a2b
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@ -221,6 +221,15 @@ Vector3 BakedLightmap::get_extents() const {
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return extents;
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}
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void BakedLightmap::set_bake_default_texels_per_unit(const float &p_bake_texels_per_unit) {
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bake_default_texels_per_unit = p_bake_texels_per_unit;
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update_gizmo();
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}
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float BakedLightmap::get_bake_default_texels_per_unit() const {
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return bake_default_texels_per_unit;
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}
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void BakedLightmap::_find_meshes_and_lights(Node *p_at_node, List<PlotMesh> &plot_meshes, List<PlotLight> &plot_lights) {
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MeshInstance *mi = Object::cast_to<MeshInstance>(p_at_node);
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@ -236,7 +245,7 @@ void BakedLightmap::_find_meshes_and_lights(Node *p_at_node, List<PlotMesh> &plo
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}
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}
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if (all_have_uv2 && mesh->get_lightmap_size_hint() != Size2()) {
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if (all_have_uv2) {
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//READY TO BAKE! size hint could be computed if not found, actually..
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AABB aabb = mesh->get_aabb();
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@ -463,7 +472,7 @@ BakedLightmap::BakeError BakedLightmap::bake(Node *p_from_node, bool p_create_vi
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btd.text = RTR("Lighting Meshes: ") + mesh_name + " (" + itos(pmc) + "/" + itos(mesh_list.size()) + ")";
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btd.pass = step;
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btd.last_step = 0;
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err = baker.make_lightmap(E->get().local_xform, E->get().mesh, lm, _bake_time, &btd);
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err = baker.make_lightmap(E->get().local_xform, E->get().mesh, bake_default_texels_per_unit, lm, _bake_time, &btd);
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if (err != OK) {
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bake_end_function();
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if (err == ERR_SKIP)
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@ -473,7 +482,7 @@ BakedLightmap::BakeError BakedLightmap::bake(Node *p_from_node, bool p_create_vi
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step += 100;
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} else {
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err = baker.make_lightmap(E->get().local_xform, E->get().mesh, lm);
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err = baker.make_lightmap(E->get().local_xform, E->get().mesh, bake_default_texels_per_unit, lm);
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}
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if (err == OK) {
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@ -790,6 +799,9 @@ void BakedLightmap::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_extents", "extents"), &BakedLightmap::set_extents);
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ClassDB::bind_method(D_METHOD("get_extents"), &BakedLightmap::get_extents);
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ClassDB::bind_method(D_METHOD("set_bake_default_texels_per_unit", "texels"), &BakedLightmap::set_bake_default_texels_per_unit);
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ClassDB::bind_method(D_METHOD("get_bake_default_texels_per_unit"), &BakedLightmap::get_bake_default_texels_per_unit);
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ClassDB::bind_method(D_METHOD("set_propagation", "propagation"), &BakedLightmap::set_propagation);
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ClassDB::bind_method(D_METHOD("get_propagation"), &BakedLightmap::get_propagation);
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@ -814,6 +826,7 @@ void BakedLightmap::_bind_methods() {
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "bake_energy", PROPERTY_HINT_RANGE, "0,32,0.01"), "set_energy", "get_energy");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "bake_hdr"), "set_hdr", "is_hdr");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR3, "bake_extents"), "set_extents", "get_extents");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "bake_default_texels_per_unit"), "set_bake_default_texels_per_unit", "get_bake_default_texels_per_unit");
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ADD_GROUP("Capture", "capture_");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "capture_cell_size", PROPERTY_HINT_RANGE, "0.01,64,0.01"), "set_capture_cell_size", "get_capture_cell_size");
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ADD_GROUP("Data", "");
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@ -836,6 +849,7 @@ void BakedLightmap::_bind_methods() {
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BakedLightmap::BakedLightmap() {
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extents = Vector3(10, 10, 10);
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bake_default_texels_per_unit = 20;
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bake_cell_size = 0.25;
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capture_cell_size = 0.5;
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@ -119,6 +119,7 @@ private:
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float bake_cell_size;
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float capture_cell_size;
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Vector3 extents;
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float bake_default_texels_per_unit;
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float propagation;
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float energy;
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BakeQuality bake_quality;
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@ -178,6 +179,9 @@ public:
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void set_extents(const Vector3 &p_extents);
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Vector3 get_extents() const;
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void set_bake_default_texels_per_unit(const float &p_extents);
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float get_bake_default_texels_per_unit() const;
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void set_propagation(float p_propagation);
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float get_propagation() const;
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@ -1792,19 +1792,82 @@ void VoxelLightBaker::_lightmap_bake_point(uint32_t p_x, LightMap *p_line) {
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}
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}
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Error VoxelLightBaker::make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float), void *p_bake_time_ud) {
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Error VoxelLightBaker::make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, float default_texels_per_unit, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float), void *p_bake_time_ud) {
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//transfer light information to a lightmap
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Ref<Mesh> mesh = p_mesh;
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int width = mesh->get_lightmap_size_hint().x;
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int height = mesh->get_lightmap_size_hint().y;
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//step 1 - create lightmap
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int width;
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int height;
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Vector<LightMap> lightmap;
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lightmap.resize(width * height);
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Transform xform = to_cell_space * p_xform;
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if (mesh->get_lightmap_size_hint() == Size2()) {
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double area = 0;
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double uv_area = 0;
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for (int i = 0; i < mesh->get_surface_count(); i++) {
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Array arrays = mesh->surface_get_arrays(i);
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PoolVector<Vector3> vertices = arrays[Mesh::ARRAY_VERTEX];
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PoolVector<Vector2> uv2 = arrays[Mesh::ARRAY_TEX_UV2];
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PoolVector<int> indices = arrays[Mesh::ARRAY_INDEX];
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ERR_FAIL_COND_V(vertices.size() == 0, ERR_INVALID_PARAMETER);
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ERR_FAIL_COND_V(uv2.size() == 0, ERR_INVALID_PARAMETER);
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int vc = vertices.size();
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PoolVector<Vector3>::Read vr = vertices.read();
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PoolVector<Vector2>::Read u2r = uv2.read();
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PoolVector<int>::Read ir;
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int ic = 0;
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if (indices.size()) {
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ic = indices.size();
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ir = indices.read();
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}
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int faces = ic ? ic / 3 : vc / 3;
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for (int j = 0; j < faces; j++) {
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Vector3 vertex[3];
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Vector2 uv[3];
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for (int k = 0; k < 3; k++) {
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int idx = ic ? ir[j * 3 + k] : j * 3 + k;
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vertex[k] = xform.xform(vr[idx]);
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uv[k] = u2r[idx];
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}
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Vector3 p1 = vertex[0];
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Vector3 p2 = vertex[1];
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Vector3 p3 = vertex[2];
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double a = p1.distance_to(p2);
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double b = p2.distance_to(p3);
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double c = p3.distance_to(p1);
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double halfPerimeter = (a + b + c) / 2.0;
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area += sqrt(halfPerimeter * (halfPerimeter - a) * (halfPerimeter - b) * (halfPerimeter - c));
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Vector2 uv_p1 = uv[0];
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Vector2 uv_p2 = uv[1];
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Vector2 uv_p3 = uv[2];
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double uv_a = uv_p1.distance_to(uv_p2);
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double uv_b = uv_p2.distance_to(uv_p3);
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double uv_c = uv_p3.distance_to(uv_p1);
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double uv_halfPerimeter = (uv_a + uv_b + uv_c) / 2.0;
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uv_area += sqrt(uv_halfPerimeter * (uv_halfPerimeter - uv_a) * (uv_halfPerimeter - uv_b) * (uv_halfPerimeter - uv_c));
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}
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}
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if (uv_area < 0.0001f) {
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uv_area = 1.0;
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}
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int pixels = (ceil((1.0 / sqrt(uv_area)) * sqrt(area * default_texels_per_unit)));
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width = height = CLAMP(pixels, 2, 4096);
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} else {
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width = mesh->get_lightmap_size_hint().x;
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height = mesh->get_lightmap_size_hint().y;
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}
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lightmap.resize(width * height);
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//step 2 plot faces to lightmap
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for (int i = 0; i < mesh->get_surface_count(); i++) {
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@ -177,7 +177,7 @@ public:
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PoolVector<float> light;
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};
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Error make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float) = NULL, void *p_bake_time_ud = NULL);
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Error make_lightmap(const Transform &p_xform, Ref<Mesh> &p_mesh, float default_texels_per_unit, LightMapData &r_lightmap, bool (*p_bake_time_func)(void *, float, float) = NULL, void *p_bake_time_ud = NULL);
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PoolVector<int> create_gi_probe_data();
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Ref<MultiMesh> create_debug_multimesh(DebugMode p_mode = DEBUG_ALBEDO);
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