noahbackus/godot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 2 Wiki Activity
Files
de6814daaeae9bbd2b08dae044467d3a532b5023
godot/editor/import/3d/resource_importer_obj.cpp
Hugo Locurcio b8ee61f45d Add Generate LODs, Shadow Mesh and Lightmap UV2 options to OBJ mesh import 
This puts OBJ mesh import on parity with 3D scene import. It's now
possible to have the same level of optimization as imported 3D scenes
while using the OBJ mesh workflow.

`optimize_indices_for_cache()` is now always called on import as well,
similar to what the 3D scene import already does.
2024-10-25 02:48:42 +02:00

693 lines
24 KiB
C++
Raw Blame History

/**************************************************************************/
/* resource_importer_obj.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "resource_importer_obj.h"
#include "core/io/file_access.h"
#include "core/io/resource_saver.h"
#include "scene/3d/importer_mesh_instance_3d.h"
#include "scene/3d/mesh_instance_3d.h"
#include "scene/3d/node_3d.h"
#include "scene/resources/3d/importer_mesh.h"
#include "scene/resources/mesh.h"
#include "scene/resources/surface_tool.h"
uint32_t EditorOBJImporter::get_import_flags() const {
return IMPORT_SCENE;
}
static Error _parse_material_library(const String &p_path, HashMap<String, Ref<StandardMaterial3D>> &material_map, List<String> *r_missing_deps) {
Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_OPEN, vformat("Couldn't open MTL file '%s', it may not exist or not be readable.", p_path));
Ref<StandardMaterial3D> current;
String current_name;
String base_path = p_path.get_base_dir();
while (true) {
String l = f->get_line().strip_edges();
if (l.begins_with("newmtl ")) {
//vertex
current_name = l.replace("newmtl", "").strip_edges();
current.instantiate();
current->set_name(current_name);
material_map[current_name] = current;
} else if (l.begins_with("Ka ")) {
//uv
WARN_PRINT("OBJ: Ambient light for material '" + current_name + "' is ignored in PBR");
} else if (l.begins_with("Kd ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
Color c = current->get_albedo();
c.r = v[1].to_float();
c.g = v[2].to_float();
c.b = v[3].to_float();
current->set_albedo(c);
} else if (l.begins_with("Ks ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
float r = v[1].to_float();
float g = v[2].to_float();
float b = v[3].to_float();
float metalness = MAX(r, MAX(g, b));
current->set_metallic(metalness);
} else if (l.begins_with("Ns ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
float s = v[1].to_float();
current->set_metallic((1000.0 - s) / 1000.0);
} else if (l.begins_with("d ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
float d = v[1].to_float();
Color c = current->get_albedo();
c.a = d;
current->set_albedo(c);
if (c.a < 0.99) {
current->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
}
} else if (l.begins_with("Tr ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() != 2, ERR_INVALID_DATA);
float d = v[1].to_float();
Color c = current->get_albedo();
c.a = 1.0 - d;
current->set_albedo(c);
if (c.a < 0.99) {
current->set_transparency(StandardMaterial3D::TRANSPARENCY_ALPHA);
}
} else if (l.begins_with("map_Ka ")) {
//uv
WARN_PRINT("OBJ: Ambient light texture for material '" + current_name + "' is ignored in PBR");
} else if (l.begins_with("map_Kd ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
String p = l.replace("map_Kd", "").replace("\\", "/").strip_edges();
String path;
if (p.is_absolute_path()) {
path = p;
} else {
path = base_path.path_join(p);
}
Ref<Texture2D> texture = ResourceLoader::load(path);
if (texture.is_valid()) {
current->set_texture(StandardMaterial3D::TEXTURE_ALBEDO, texture);
} else if (r_missing_deps) {
r_missing_deps->push_back(path);
}
} else if (l.begins_with("map_Ks ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
String p = l.replace("map_Ks", "").replace("\\", "/").strip_edges();
String path;
if (p.is_absolute_path()) {
path = p;
} else {
path = base_path.path_join(p);
}
Ref<Texture2D> texture = ResourceLoader::load(path);
if (texture.is_valid()) {
current->set_texture(StandardMaterial3D::TEXTURE_METALLIC, texture);
} else if (r_missing_deps) {
r_missing_deps->push_back(path);
}
} else if (l.begins_with("map_Ns ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
String p = l.replace("map_Ns", "").replace("\\", "/").strip_edges();
String path;
if (p.is_absolute_path()) {
path = p;
} else {
path = base_path.path_join(p);
}
Ref<Texture2D> texture = ResourceLoader::load(path);
if (texture.is_valid()) {
current->set_texture(StandardMaterial3D::TEXTURE_ROUGHNESS, texture);
} else if (r_missing_deps) {
r_missing_deps->push_back(path);
}
} else if (l.begins_with("map_bump ")) {
//normal
ERR_FAIL_COND_V(current.is_null(), ERR_FILE_CORRUPT);
String p = l.replace("map_bump", "").replace("\\", "/").strip_edges();
String path = base_path.path_join(p);
Ref<Texture2D> texture = ResourceLoader::load(path);
if (texture.is_valid()) {
current->set_feature(StandardMaterial3D::FEATURE_NORMAL_MAPPING, true);
current->set_texture(StandardMaterial3D::TEXTURE_NORMAL, texture);
} else if (r_missing_deps) {
r_missing_deps->push_back(path);
}
} else if (f->eof_reached()) {
break;
}
}
return OK;
}
static Error _parse_obj(const String &p_path, List<Ref<ImporterMesh>> &r_meshes, bool p_single_mesh, bool p_generate_tangents, bool p_generate_lods, bool p_generate_shadow_mesh, bool p_generate_lightmap_uv2, float p_generate_lightmap_uv2_texel_size, const PackedByteArray &p_src_lightmap_cache, Vector3 p_scale_mesh, Vector3 p_offset_mesh, bool p_disable_compression, Vector<Vector<uint8_t>> &r_lightmap_caches, List<String> *r_missing_deps) {
Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
ERR_FAIL_COND_V_MSG(f.is_null(), ERR_CANT_OPEN, vformat("Couldn't open OBJ file '%s', it may not exist or not be readable.", p_path));
// Avoid trying to load/interpret potential build artifacts from Visual Studio (e.g. when compiling native plugins inside the project tree).
// This should only match if it's indeed a COFF file header.
// https://learn.microsoft.com/en-us/windows/win32/debug/pe-format#machine-types
const int first_bytes = f->get_16();
static const Vector<int> coff_header_machines{
0x0, // IMAGE_FILE_MACHINE_UNKNOWN
0x8664, // IMAGE_FILE_MACHINE_AMD64
0x1c0, // IMAGE_FILE_MACHINE_ARM
0x14c, // IMAGE_FILE_MACHINE_I386
0x200, // IMAGE_FILE_MACHINE_IA64
};
ERR_FAIL_COND_V_MSG(coff_header_machines.has(first_bytes), ERR_FILE_CORRUPT, vformat("Couldn't read OBJ file '%s', it seems to be binary, corrupted, or empty.", p_path));
f->seek(0);
Ref<ImporterMesh> mesh;
mesh.instantiate();
bool generate_tangents = p_generate_tangents;
Vector3 scale_mesh = p_scale_mesh;
Vector3 offset_mesh = p_offset_mesh;
Vector<Vector3> vertices;
Vector<Vector3> normals;
Vector<Vector2> uvs;
Vector<Color> colors;
const String default_name = "Mesh";
String name = default_name;
HashMap<String, HashMap<String, Ref<StandardMaterial3D>>> material_map;
Ref<SurfaceTool> surf_tool = memnew(SurfaceTool);
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
String current_material_library;
String current_material;
String current_group;
uint32_t smooth_group = 0;
bool smoothing = true;
const uint32_t no_smoothing_smooth_group = (uint32_t)-1;
bool uses_uvs = false;
while (true) {
String l = f->get_line().strip_edges();
while (l.length() && l[l.length() - 1] == '\\') {
String add = f->get_line().strip_edges();
l += add;
if (add.is_empty()) {
break;
}
}
if (l.begins_with("v ")) {
//vertex
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
Vector3 vtx;
vtx.x = v[1].to_float() * scale_mesh.x + offset_mesh.x;
vtx.y = v[2].to_float() * scale_mesh.y + offset_mesh.y;
vtx.z = v[3].to_float() * scale_mesh.z + offset_mesh.z;
vertices.push_back(vtx);
//vertex color
if (v.size() >= 7) {
while (colors.size() < vertices.size() - 1) {
colors.push_back(Color(1.0, 1.0, 1.0));
}
Color c;
c.r = v[4].to_float();
c.g = v[5].to_float();
c.b = v[6].to_float();
colors.push_back(c);
} else if (!colors.is_empty()) {
colors.push_back(Color(1.0, 1.0, 1.0));
}
} else if (l.begins_with("vt ")) {
//uv
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 3, ERR_FILE_CORRUPT);
Vector2 uv;
uv.x = v[1].to_float();
uv.y = 1.0 - v[2].to_float();
uvs.push_back(uv);
} else if (l.begins_with("vn ")) {
//normal
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
Vector3 nrm;
nrm.x = v[1].to_float();
nrm.y = v[2].to_float();
nrm.z = v[3].to_float();
normals.push_back(nrm);
} else if (l.begins_with("f ")) {
//vertex
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_FILE_CORRUPT);
//not very fast, could be sped up
Vector<String> face[3];
face[0] = v[1].split("/");
face[1] = v[2].split("/");
ERR_FAIL_COND_V(face[0].is_empty(), ERR_FILE_CORRUPT);
ERR_FAIL_COND_V(face[0].size() != face[1].size(), ERR_FILE_CORRUPT);
for (int i = 2; i < v.size() - 1; i++) {
face[2] = v[i + 1].split("/");
ERR_FAIL_COND_V(face[0].size() != face[2].size(), ERR_FILE_CORRUPT);
for (int j = 0; j < 3; j++) {
int idx = j;
if (idx < 2) {
idx = 1 ^ idx;
}
// Check UVs before faces as we may need to generate dummy tangents if there are no UVs.
if (face[idx].size() >= 2 && !face[idx][1].is_empty()) {
int uv = face[idx][1].to_int() - 1;
if (uv < 0) {
uv += uvs.size() + 1;
}
ERR_FAIL_INDEX_V(uv, uvs.size(), ERR_FILE_CORRUPT);
surf_tool->set_uv(uvs[uv]);
uses_uvs = true;
}
if (face[idx].size() == 3) {
int norm = face[idx][2].to_int() - 1;
if (norm < 0) {
norm += normals.size() + 1;
}
ERR_FAIL_INDEX_V(norm, normals.size(), ERR_FILE_CORRUPT);
surf_tool->set_normal(normals[norm]);
if (generate_tangents && !uses_uvs) {
// We can't generate tangents without UVs, so create dummy tangents.
Vector3 tan = Vector3(normals[norm].z, -normals[norm].x, normals[norm].y).cross(normals[norm].normalized()).normalized();
surf_tool->set_tangent(Plane(tan.x, tan.y, tan.z, 1.0));
}
} else {
// No normals, use a dummy tangent since normals and tangents will be generated.
if (generate_tangents && !uses_uvs) {
// We can't generate tangents without UVs, so create dummy tangents.
surf_tool->set_tangent(Plane(1.0, 0.0, 0.0, 1.0));
}
}
int vtx = face[idx][0].to_int() - 1;
if (vtx < 0) {
vtx += vertices.size() + 1;
}
ERR_FAIL_INDEX_V(vtx, vertices.size(), ERR_FILE_CORRUPT);
Vector3 vertex = vertices[vtx];
if (!colors.is_empty()) {
surf_tool->set_color(colors[vtx]);
}
surf_tool->set_smooth_group(smoothing ? smooth_group : no_smoothing_smooth_group);
surf_tool->add_vertex(vertex);
}
face[1] = face[2];
}
} else if (l.begins_with("s ")) { //smoothing
String what = l.substr(2, l.length()).strip_edges();
bool do_smooth;
if (what == "off") {
do_smooth = false;
} else {
do_smooth = true;
}
if (do_smooth != smoothing) {
smoothing = do_smooth;
if (smoothing) {
smooth_group++;
}
}
} else if (/*l.begins_with("g ") ||*/ l.begins_with("usemtl ") || (l.begins_with("o ") || f->eof_reached())) { //commit group to mesh
uint64_t mesh_flags = RS::ARRAY_FLAG_COMPRESS_ATTRIBUTES;
if (p_disable_compression) {
mesh_flags = 0;
} else {
bool is_mesh_2d = true;
// Disable compression if all z equals 0 (the mesh is 2D).
for (int i = 0; i < vertices.size(); i++) {
if (!Math::is_zero_approx(vertices[i].z)) {
is_mesh_2d = false;
break;
}
}
if (is_mesh_2d) {
mesh_flags = 0;
}
}
//groups are too annoying
if (surf_tool->get_vertex_array().size()) {
//another group going on, commit it
if (normals.size() == 0) {
surf_tool->generate_normals();
}
if (generate_tangents && uses_uvs) {
surf_tool->generate_tangents();
}
surf_tool->index();
print_verbose("OBJ: Current material library " + current_material_library + " has " + itos(material_map.has(current_material_library)));
print_verbose("OBJ: Current material " + current_material + " has " + itos(material_map.has(current_material_library) && material_map[current_material_library].has(current_material)));
Ref<StandardMaterial3D> material;
if (material_map.has(current_material_library) && material_map[current_material_library].has(current_material)) {
material = material_map[current_material_library][current_material];
if (!colors.is_empty()) {
material->set_flag(StandardMaterial3D::FLAG_SRGB_VERTEX_COLOR, true);
}
surf_tool->set_material(material);
}
Array array = surf_tool->commit_to_arrays();
if (mesh_flags & RS::ARRAY_FLAG_COMPRESS_ATTRIBUTES && generate_tangents && uses_uvs) {
// Compression is enabled, so let's validate that the normals and generated tangents are correct.
Vector<Vector3> norms = array[Mesh::ARRAY_NORMAL];
Vector<float> tangents = array[Mesh::ARRAY_TANGENT];
ERR_FAIL_COND_V(tangents.is_empty(), ERR_FILE_CORRUPT);
for (int vert = 0; vert < norms.size(); vert++) {
Vector3 tan = Vector3(tangents[vert * 4 + 0], tangents[vert * 4 + 1], tangents[vert * 4 + 2]);
if (abs(tan.dot(norms[vert])) > 0.0001) {
// Tangent is not perpendicular to the normal, so we can't use compression.
mesh_flags &= ~RS::ARRAY_FLAG_COMPRESS_ATTRIBUTES;
}
}
}
mesh->add_surface(Mesh::PRIMITIVE_TRIANGLES, array, TypedArray<Array>(), Dictionary(), material, name, mesh_flags);
print_verbose("OBJ: Added surface :" + mesh->get_surface_name(mesh->get_surface_count() - 1));
if (!current_material.is_empty()) {
if (mesh->get_surface_count() >= 1) {
mesh->set_surface_name(mesh->get_surface_count() - 1, current_material.get_basename());
}
} else if (!current_group.is_empty()) {
if (mesh->get_surface_count() >= 1) {
mesh->set_surface_name(mesh->get_surface_count() - 1, current_group);
}
}
surf_tool->clear();
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
uses_uvs = false;
}
if (l.begins_with("o ") || f->eof_reached()) {
if (!p_single_mesh) {
if (mesh->get_surface_count() > 0) {
mesh->set_name(name);
r_meshes.push_back(mesh);
mesh.instantiate();
}
name = default_name;
current_group = "";
current_material = "";
}
}
if (f->eof_reached()) {
break;
}
if (l.begins_with("o ")) {
name = l.substr(2, l.length()).strip_edges();
}
if (l.begins_with("usemtl ")) {
current_material = l.replace("usemtl", "").strip_edges();
}
if (l.begins_with("g ")) {
current_group = l.substr(2, l.length()).strip_edges();
}
} else if (l.begins_with("mtllib ")) { //parse material
current_material_library = l.replace("mtllib", "").strip_edges();
if (!material_map.has(current_material_library)) {
HashMap<String, Ref<StandardMaterial3D>> lib;
String lib_path = current_material_library;
if (lib_path.is_relative_path()) {
lib_path = p_path.get_base_dir().path_join(current_material_library);
}
Error err = _parse_material_library(lib_path, lib, r_missing_deps);
if (err == OK) {
material_map[current_material_library] = lib;
}
}
}
}
if (p_generate_lightmap_uv2) {
Vector<uint8_t> lightmap_cache;
mesh->lightmap_unwrap_cached(Transform3D(), p_generate_lightmap_uv2_texel_size, p_src_lightmap_cache, lightmap_cache);
if (!lightmap_cache.is_empty()) {
if (r_lightmap_caches.is_empty()) {
r_lightmap_caches.push_back(lightmap_cache);
} else {
// MD5 is stored at the beginning of the cache data.
const String new_md5 = String::md5(lightmap_cache.ptr());
for (int i = 0; i < r_lightmap_caches.size(); i++) {
const String md5 = String::md5(r_lightmap_caches[i].ptr());
if (new_md5 < md5) {
r_lightmap_caches.insert(i, lightmap_cache);
break;
}
if (new_md5 == md5) {
break;
}
}
}
}
}
mesh->optimize_indices_for_cache();
if (p_generate_lods) {
// Use normal merge/split angles that match the defaults used for 3D scene importing.
mesh->generate_lods(60.0f, 25.0f, {});
}
if (p_generate_shadow_mesh) {
mesh->create_shadow_mesh();
}
if (p_single_mesh && mesh->get_surface_count() > 0) {
r_meshes.push_back(mesh);
}
return OK;
}
Node *EditorOBJImporter::import_scene(const String &p_path, uint32_t p_flags, const HashMap<StringName, Variant> &p_options, List<String> *r_missing_deps, Error *r_err) {
List<Ref<ImporterMesh>> meshes;
// LOD, shadow mesh and lightmap UV2 generation are handled by ResourceImporterScene in this case,
// so disable it within the OBJ mesh import.
Vector<Vector<uint8_t>> mesh_lightmap_caches;
Error err = _parse_obj(p_path, meshes, false, p_flags & IMPORT_GENERATE_TANGENT_ARRAYS, false, false, false, 0.2, PackedByteArray(), Vector3(1, 1, 1), Vector3(0, 0, 0), p_flags & IMPORT_FORCE_DISABLE_MESH_COMPRESSION, mesh_lightmap_caches, r_missing_deps);
if (err != OK) {
if (r_err) {
*r_err = err;
}
return nullptr;
}
Node3D *scene = memnew(Node3D);
for (Ref<ImporterMesh> m : meshes) {
ImporterMeshInstance3D *mi = memnew(ImporterMeshInstance3D);
mi->set_mesh(m);
mi->set_name(m->get_name());
scene->add_child(mi, true);
mi->set_owner(scene);
}
if (r_err) {
*r_err = OK;
}
return scene;
}
void EditorOBJImporter::get_extensions(List<String> *r_extensions) const {
r_extensions->push_back("obj");
}
EditorOBJImporter::EditorOBJImporter() {
}
////////////////////////////////////////////////////
String ResourceImporterOBJ::get_importer_name() const {
return "wavefront_obj";
}
String ResourceImporterOBJ::get_visible_name() const {
return "OBJ as Mesh";
}
void ResourceImporterOBJ::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("obj");
}
String ResourceImporterOBJ::get_save_extension() const {
return "mesh";
}
String ResourceImporterOBJ::get_resource_type() const {
return "Mesh";
}
int ResourceImporterOBJ::get_format_version() const {
return 1;
}
int ResourceImporterOBJ::get_preset_count() const {
return 0;
}
String ResourceImporterOBJ::get_preset_name(int p_idx) const {
return "";
}
void ResourceImporterOBJ::get_import_options(const String &p_path, List<ImportOption> *r_options, int p_preset) const {
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate_tangents"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate_lods"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate_shadow_mesh"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate_lightmap_uv2", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_DEFAULT | PROPERTY_USAGE_UPDATE_ALL_IF_MODIFIED), false));
r_options->push_back(ImportOption(PropertyInfo(Variant::FLOAT, "generate_lightmap_uv2_texel_size", PROPERTY_HINT_RANGE, "0.001,100,0.001"), 0.2));
r_options->push_back(ImportOption(PropertyInfo(Variant::VECTOR3, "scale_mesh"), Vector3(1, 1, 1)));
r_options->push_back(ImportOption(PropertyInfo(Variant::VECTOR3, "offset_mesh"), Vector3(0, 0, 0)));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "force_disable_mesh_compression"), false));
}
bool ResourceImporterOBJ::get_option_visibility(const String &p_path, const String &p_option, const HashMap<StringName, Variant> &p_options) const {
if (p_option == "generate_lightmap_uv2_texel_size" && !p_options["generate_lightmap_uv2"]) {
// Only display the lightmap texel size import option when lightmap UV2 generation is enabled.
return false;
}
return true;
}
Error ResourceImporterOBJ::import(const String &p_source_file, const String &p_save_path, const HashMap<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files, Variant *r_metadata) {
List<Ref<ImporterMesh>> meshes;
Vector<uint8_t> src_lightmap_cache;
Vector<Vector<uint8_t>> mesh_lightmap_caches;
Error err;
{
src_lightmap_cache = FileAccess::get_file_as_bytes(p_source_file + ".unwrap_cache", &err);
if (err != OK) {
src_lightmap_cache.clear();
}
}
err = _parse_obj(p_source_file, meshes, true, p_options["generate_tangents"], p_options["generate_lods"], p_options["generate_shadow_mesh"], p_options["generate_lightmap_uv2"], p_options["generate_lightmap_uv2_texel_size"], src_lightmap_cache, p_options["scale_mesh"], p_options["offset_mesh"], p_options["force_disable_mesh_compression"], mesh_lightmap_caches, nullptr);
if (mesh_lightmap_caches.size()) {
Ref<FileAccess> f = FileAccess::open(p_source_file + ".unwrap_cache", FileAccess::WRITE);
if (f.is_valid()) {
f->store_32(mesh_lightmap_caches.size());
for (int i = 0; i < mesh_lightmap_caches.size(); i++) {
String md5 = String::md5(mesh_lightmap_caches[i].ptr());
f->store_buffer(mesh_lightmap_caches[i].ptr(), mesh_lightmap_caches[i].size());
}
}
}
err = OK;
ERR_FAIL_COND_V(err != OK, err);
ERR_FAIL_COND_V(meshes.size() != 1, ERR_BUG);
String save_path = p_save_path + ".mesh";
err = ResourceSaver::save(meshes.front()->get()->get_mesh(), save_path);
ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot save Mesh to file '" + save_path + "'.");
r_gen_files->push_back(save_path);
return OK;
}
ResourceImporterOBJ::ResourceImporterOBJ() {
}
Reference in New Issue View Git Blame Copy Permalink