BakedLightmap::BakeError BakedLightmap::bake(Node *p_from_node, bool p_create_visual_debug) {
String save_path;
if (image_path.begins_with("res://")) {
save_path = image_path;
} else {
if (get_filename() != "") {
save_path = get_filename().get_base_dir();
} else if (get_owner() && get_owner()->get_filename() != "") {
save_path = get_owner()->get_filename().get_base_dir();
}
if (save_path == "") {
return BAKE_ERROR_NO_SAVE_PATH;
}
if (image_path != "") {
save_path.plus_file(image_path);
}
}
{
//check for valid save path
DirAccessRef d = DirAccess::open(save_path);
if (!d) {
ERR_PRINTS("Invalid Save Path: " + save_path);
return BAKE_ERROR_NO_SAVE_PATH;
}
}
Ref<BakedLightmapData> new_light_data;
new_light_data.instance();
VoxelLightBaker baker;
int bake_subdiv;
int capture_subdiv;
AABB bake_bounds;
{
bake_bounds = AABB(-extents, extents * 2.0);
int subdiv = nearest_power_of_2_templated(int(bake_bounds.get_longest_axis_size() / bake_cell_size));
bake_bounds.size[bake_bounds.get_longest_axis_size()] = subdiv * bake_cell_size;
bake_subdiv = nearest_shift(subdiv) + 1;
capture_subdiv = bake_subdiv;
float css = bake_cell_size;
while (css < capture_cell_size && capture_subdiv > 2) {
capture_subdiv--;
css *= 2.0;
}
}
baker.begin_bake(bake_subdiv, bake_bounds);
List<PlotMesh> mesh_list;
List<PlotLight> light_list;
_find_meshes_and_lights(p_from_node ? p_from_node : get_parent(), mesh_list, light_list);
if (bake_begin_function) {
bake_begin_function(mesh_list.size() + light_list.size() + 1 + mesh_list.size() * 100);
}
int step = 0;
int pmc = 0;
for (List<PlotMesh>::Element *E = mesh_list.front(); E; E = E->next()) {
if (bake_step_function) {
bake_step_function(step++, RTR("Plotting Meshes: ") + " (" + itos(pmc + 1) + "/" + itos(mesh_list.size()) + ")");
}
pmc++;
baker.plot_mesh(E->get().local_xform, E->get().mesh, E->get().instance_materials, E->get().override_material);
}
pmc = 0;
baker.begin_bake_light(VoxelLightBaker::BakeQuality(bake_quality), VoxelLightBaker::BakeMode(bake_mode), propagation, energy);
for (List<PlotLight>::Element *E = light_list.front(); E; E = E->next()) {
if (bake_step_function) {
bake_step_function(step++, RTR("Plotting Lights:") + " (" + itos(pmc + 1) + "/" + itos(light_list.size()) + ")");
}
pmc++;
PlotLight pl = E->get();
switch (pl.light->get_light_type()) {
case VS::LIGHT_DIRECTIONAL: {
baker.plot_light_directional(-pl.local_xform.basis.get_axis(2), pl.light->get_color(), pl.light->get_param(Light::PARAM_ENERGY), pl.light->get_param(Light::PARAM_INDIRECT_ENERGY), pl.light->get_bake_mode() == Light::BAKE_ALL);
} break;
case VS::LIGHT_OMNI: {
baker.plot_light_omni(pl.local_xform.origin, pl.light->get_color(), pl.light->get_param(Light::PARAM_ENERGY), pl.light->get_param(Light::PARAM_INDIRECT_ENERGY), pl.light->get_param(Light::PARAM_RANGE), pl.light->get_param(Light::PARAM_ATTENUATION), pl.light->get_bake_mode() == Light::BAKE_ALL);
} break;
case VS::LIGHT_SPOT: {
baker.plot_light_spot(pl.local_xform.origin, pl.local_xform.basis.get_axis(2), pl.light->get_color(), pl.light->get_param(Light::PARAM_ENERGY), pl.light->get_param(Light::PARAM_INDIRECT_ENERGY), pl.light->get_param(Light::PARAM_RANGE), pl.light->get_param(Light::PARAM_ATTENUATION), pl.light->get_param(Light::PARAM_SPOT_ANGLE), pl.light->get_param(Light::PARAM_SPOT_ATTENUATION), pl.light->get_bake_mode() == Light::BAKE_ALL);
} break;
}
}
/*if (bake_step_function) {
bake_step_function(pmc++, RTR("Finishing Plot"));
}*/
baker.end_bake();
Set<String> used_mesh_names;
pmc = 0;
for (List<PlotMesh>::Element *E = mesh_list.front(); E; E = E->next()) {
String mesh_name = E->get().mesh->get_name();
if (mesh_name == "" || mesh_name.find(":") != -1 || mesh_name.find("/") != -1) {
mesh_name = "LightMap";
}
if (used_mesh_names.has(mesh_name)) {
int idx = 2;
String base = mesh_name;
while (true) {
mesh_name = base + itos(idx);
if (!used_mesh_names.has(mesh_name))
break;
idx++;
}
}
used_mesh_names.insert(mesh_name);
pmc++;
VoxelLightBaker::LightMapData lm;
Error err;
if (bake_step_function) {
BakeTimeData btd;
btd.text = RTR("Lighting Meshes: ") + mesh_name + " (" + itos(pmc) + "/" + itos(mesh_list.size()) + ")";
btd.pass = step;
btd.last_step = 0;
err = baker.make_lightmap(E->get().local_xform, E->get().mesh, lm, _bake_time, &btd);
if (err != OK) {
bake_end_function();
if (err == ERR_SKIP)
return BAKE_ERROR_USER_ABORTED;
return BAKE_ERROR_CANT_CREATE_IMAGE;
}
step += 100;
} else {
err = baker.make_lightmap(E->get().local_xform, E->get().mesh, lm);
}
if (err == OK) {
Ref<Image> image;
image.instance();
uint32_t tex_flags = Texture::FLAGS_DEFAULT;
if (hdr) {
//just save a regular image
PoolVector<uint8_t> data;
int s = lm.light.size();
data.resize(lm.light.size() * 2);
{
PoolVector<uint8_t>::Write w = data.write();
PoolVector<float>::Read r = lm.light.read();
uint16_t *hfw = (uint16_t *)w.ptr();
for (int i = 0; i < s; i++) {
hfw[i] = Math::make_half_float(r[i]);
}
}
image->create(lm.width, lm.height, false, Image::FORMAT_RGBH, data);
} else {
//just save a regular image
PoolVector<uint8_t> data;
int s = lm.light.size();
data.resize(lm.light.size());
{
PoolVector<uint8_t>::Write w = data.write();
PoolVector<float>::Read r = lm.light.read();
for (int i = 0; i < s; i += 3) {
Color c(r[i + 0], r[i + 1], r[i + 2]);
c = c.to_srgb();
w[i + 0] = CLAMP(c.r * 255, 0, 255);
w[i + 1] = CLAMP(c.g * 255, 0, 255);
w[i + 2] = CLAMP(c.b * 255, 0, 255);
}
}
image->create(lm.width, lm.height, false, Image::FORMAT_RGB8, data);
//This texture is saved to SRGB for two reasons:
// 1) first is so it looks better when doing the LINEAR->SRGB conversion (more accurate)
// 2) So it can be used in the GLES2 backend, which does not support linkear workflow
tex_flags |= Texture::FLAG_CONVERT_TO_LINEAR;
}
Ref<ImageTexture> tex;
String image_path = save_path.plus_file(mesh_name + ".tex");
bool set_path = true;
if (ResourceCache::has(image_path)) {
tex = Ref<Resource>((Resource *)ResourceCache::get(image_path));
set_path = false;
}
if (!tex.is_valid()) {
tex.instance();
}
tex->create_from_image(image, tex_flags);
err = ResourceSaver::save(image_path, tex, ResourceSaver::FLAG_CHANGE_PATH);
if (err != OK) {
if (bake_end_function) {
bake_end_function();
}
ERR_FAIL_COND_V(err != OK, BAKE_ERROR_CANT_CREATE_IMAGE);
}
if (set_path) {
tex->set_path(image_path);
}
new_light_data->add_user(E->get().path, tex, E->get().instance_idx);
}
}
AABB bounds = AABB(-extents, extents * 2);
new_light_data->set_cell_subdiv(capture_subdiv);
new_light_data->set_bounds(bounds);
new_light_data->set_octree(baker.create_capture_octree(capture_subdiv));
{
float bake_bound_size = bake_bounds.get_longest_axis_size();
Transform to_bounds;
to_bounds.basis.scale(Vector3(bake_bound_size, bake_bound_size, bake_bound_size));
to_bounds.origin = bounds.position;
Transform to_grid;
to_grid.basis.scale(Vector3(1 << (capture_subdiv - 1), 1 << (capture_subdiv - 1), 1 << (capture_subdiv - 1)));
Transform to_cell_space = to_grid * to_bounds.affine_inverse();
new_light_data->set_cell_space_transform(to_cell_space);
}
if (bake_end_function) {
bake_end_function();
}
//create the data for visual server
if (p_create_visual_debug) {
MultiMeshInstance *mmi = memnew(MultiMeshInstance);
mmi->set_multimesh(baker.create_debug_multimesh(VoxelLightBaker::DEBUG_LIGHT));
add_child(mmi);
#ifdef TOOLS_ENABLED
if (get_tree()->get_edited_scene_root() == this) {
mmi->set_owner(this);
} else {
mmi->set_owner(get_owner());
}
#else
mmi->set_owner(get_owner());
#endif
}
set_light_data(new_light_data);
return BAKE_ERROR_OK;
}
void GIProbe::_create_debug_mesh(Baker *p_baker) {
Ref<MultiMesh> mm;
mm.instance();
mm->set_transform_format(MultiMesh::TRANSFORM_3D);
mm->set_color_format(MultiMesh::COLOR_8BIT);
print_line("leaf voxels: "+itos(p_baker->leaf_voxel_count));
mm->set_instance_count(p_baker->leaf_voxel_count);
Ref<Mesh> mesh;
mesh.instance();
{
Array arr;
arr.resize(Mesh::ARRAY_MAX);
PoolVector<Vector3> vertices;
PoolVector<Color> colors;
int vtx_idx=0;
#define ADD_VTX(m_idx);\
vertices.push_back( face_points[m_idx] );\
colors.push_back( Color(1,1,1,1) );\
vtx_idx++;\
for (int i=0;i<6;i++) {
Vector3 face_points[4];
for (int j=0;j<4;j++) {
float v[3];
v[0]=1.0;
v[1]=1-2*((j>>1)&1);
v[2]=v[1]*(1-2*(j&1));
for (int k=0;k<3;k++) {
if (i<3)
face_points[j][(i+k)%3]=v[k]*(i>=3?-1:1);
else
face_points[3-j][(i+k)%3]=v[k]*(i>=3?-1:1);
}
}
//tri 1
ADD_VTX(0);
ADD_VTX(1);
ADD_VTX(2);
//tri 2
ADD_VTX(2);
ADD_VTX(3);
ADD_VTX(0);
}
arr[Mesh::ARRAY_VERTEX]=vertices;
arr[Mesh::ARRAY_COLOR]=colors;
mesh->add_surface_from_arrays(Mesh::PRIMITIVE_TRIANGLES,arr);
}
{
Ref<FixedSpatialMaterial> fsm;
fsm.instance();
fsm->set_flag(FixedSpatialMaterial::FLAG_SRGB_VERTEX_COLOR,true);
fsm->set_flag(FixedSpatialMaterial::FLAG_ALBEDO_FROM_VERTEX_COLOR,true);
fsm->set_flag(FixedSpatialMaterial::FLAG_UNSHADED,true);
fsm->set_albedo(Color(1,1,1,1));
mesh->surface_set_material(0,fsm);
}
mm->set_mesh(mesh);
int idx=0;
_debug_mesh(0,0,p_baker->po2_bounds,mm,idx,p_baker);
MultiMeshInstance *mmi = memnew( MultiMeshInstance );
mmi->set_multimesh(mm);
add_child(mmi);
#ifdef TOOLS_ENABLED
if (get_tree()->get_edited_scene_root()==this){
mmi->set_owner(this);
} else {
mmi->set_owner(get_owner());
}
#else
mmi->set_owner(get_owner());
#endif
}