51ed3aef63
This allows Godot to automatically compress meshes to save a lot of bandwidth. In general, this requires no interaction from the user and should result in no noticable quality loss. This scheme is not backwards compatible, so we have provided an upgrade mechanism, and a mesh versioning mechanism. Existing meshes can still be used as a result, but users can get a performance boost by reimporting assets.
1381 lines
48 KiB
C++
1381 lines
48 KiB
C++
/**************************************************************************/
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/* importer_mesh.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "importer_mesh.h"
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#include "core/io/marshalls.h"
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#include "core/math/convex_hull.h"
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#include "core/math/random_pcg.h"
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#include "core/math/static_raycaster.h"
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#include "scene/resources/surface_tool.h"
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#include <cstdint>
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void ImporterMesh::Surface::split_normals(const LocalVector<int> &p_indices, const LocalVector<Vector3> &p_normals) {
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_split_normals(arrays, p_indices, p_normals);
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for (BlendShape &blend_shape : blend_shape_data) {
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_split_normals(blend_shape.arrays, p_indices, p_normals);
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}
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}
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void ImporterMesh::Surface::_split_normals(Array &r_arrays, const LocalVector<int> &p_indices, const LocalVector<Vector3> &p_normals) {
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ERR_FAIL_COND(r_arrays.size() != RS::ARRAY_MAX);
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const PackedVector3Array &vertices = r_arrays[RS::ARRAY_VERTEX];
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int current_vertex_count = vertices.size();
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int new_vertex_count = p_indices.size();
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int final_vertex_count = current_vertex_count + new_vertex_count;
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const int *indices_ptr = p_indices.ptr();
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for (int i = 0; i < r_arrays.size(); i++) {
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if (i == RS::ARRAY_INDEX) {
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continue;
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}
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if (r_arrays[i].get_type() == Variant::NIL) {
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continue;
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}
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switch (r_arrays[i].get_type()) {
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case Variant::PACKED_VECTOR3_ARRAY: {
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PackedVector3Array data = r_arrays[i];
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data.resize(final_vertex_count);
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Vector3 *data_ptr = data.ptrw();
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if (i == RS::ARRAY_NORMAL) {
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const Vector3 *normals_ptr = p_normals.ptr();
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memcpy(&data_ptr[current_vertex_count], normals_ptr, sizeof(Vector3) * new_vertex_count);
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} else {
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for (int j = 0; j < new_vertex_count; j++) {
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data_ptr[current_vertex_count + j] = data_ptr[indices_ptr[j]];
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}
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}
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r_arrays[i] = data;
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} break;
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case Variant::PACKED_VECTOR2_ARRAY: {
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PackedVector2Array data = r_arrays[i];
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data.resize(final_vertex_count);
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Vector2 *data_ptr = data.ptrw();
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for (int j = 0; j < new_vertex_count; j++) {
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data_ptr[current_vertex_count + j] = data_ptr[indices_ptr[j]];
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}
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r_arrays[i] = data;
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} break;
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case Variant::PACKED_FLOAT32_ARRAY: {
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PackedFloat32Array data = r_arrays[i];
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int elements = data.size() / current_vertex_count;
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data.resize(final_vertex_count * elements);
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float *data_ptr = data.ptrw();
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for (int j = 0; j < new_vertex_count; j++) {
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memcpy(&data_ptr[(current_vertex_count + j) * elements], &data_ptr[indices_ptr[j] * elements], sizeof(float) * elements);
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}
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r_arrays[i] = data;
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} break;
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case Variant::PACKED_INT32_ARRAY: {
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PackedInt32Array data = r_arrays[i];
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int elements = data.size() / current_vertex_count;
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data.resize(final_vertex_count * elements);
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int32_t *data_ptr = data.ptrw();
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for (int j = 0; j < new_vertex_count; j++) {
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memcpy(&data_ptr[(current_vertex_count + j) * elements], &data_ptr[indices_ptr[j] * elements], sizeof(int32_t) * elements);
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}
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r_arrays[i] = data;
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} break;
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case Variant::PACKED_BYTE_ARRAY: {
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PackedByteArray data = r_arrays[i];
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int elements = data.size() / current_vertex_count;
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data.resize(final_vertex_count * elements);
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uint8_t *data_ptr = data.ptrw();
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for (int j = 0; j < new_vertex_count; j++) {
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memcpy(&data_ptr[(current_vertex_count + j) * elements], &data_ptr[indices_ptr[j] * elements], sizeof(uint8_t) * elements);
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}
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r_arrays[i] = data;
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} break;
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case Variant::PACKED_COLOR_ARRAY: {
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PackedColorArray data = r_arrays[i];
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data.resize(final_vertex_count);
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Color *data_ptr = data.ptrw();
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for (int j = 0; j < new_vertex_count; j++) {
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data_ptr[current_vertex_count + j] = data_ptr[indices_ptr[j]];
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}
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r_arrays[i] = data;
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} break;
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default: {
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ERR_FAIL_MSG("Unhandled array type.");
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} break;
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}
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}
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}
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void ImporterMesh::add_blend_shape(const String &p_name) {
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ERR_FAIL_COND(surfaces.size() > 0);
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blend_shapes.push_back(p_name);
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}
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int ImporterMesh::get_blend_shape_count() const {
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return blend_shapes.size();
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}
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String ImporterMesh::get_blend_shape_name(int p_blend_shape) const {
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ERR_FAIL_INDEX_V(p_blend_shape, blend_shapes.size(), String());
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return blend_shapes[p_blend_shape];
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}
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void ImporterMesh::set_blend_shape_mode(Mesh::BlendShapeMode p_blend_shape_mode) {
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blend_shape_mode = p_blend_shape_mode;
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}
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Mesh::BlendShapeMode ImporterMesh::get_blend_shape_mode() const {
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return blend_shape_mode;
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}
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void ImporterMesh::add_surface(Mesh::PrimitiveType p_primitive, const Array &p_arrays, const TypedArray<Array> &p_blend_shapes, const Dictionary &p_lods, const Ref<Material> &p_material, const String &p_name, const uint64_t p_flags) {
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ERR_FAIL_COND(p_blend_shapes.size() != blend_shapes.size());
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ERR_FAIL_COND(p_arrays.size() != Mesh::ARRAY_MAX);
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Surface s;
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s.primitive = p_primitive;
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s.arrays = p_arrays;
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s.name = p_name;
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s.flags = p_flags;
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Vector<Vector3> vertex_array = p_arrays[Mesh::ARRAY_VERTEX];
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int vertex_count = vertex_array.size();
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ERR_FAIL_COND(vertex_count == 0);
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for (int i = 0; i < blend_shapes.size(); i++) {
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Array bsdata = p_blend_shapes[i];
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ERR_FAIL_COND(bsdata.size() != Mesh::ARRAY_MAX);
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Vector<Vector3> vertex_data = bsdata[Mesh::ARRAY_VERTEX];
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ERR_FAIL_COND(vertex_data.size() != vertex_count);
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Surface::BlendShape bs;
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bs.arrays = bsdata;
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s.blend_shape_data.push_back(bs);
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}
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List<Variant> lods;
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p_lods.get_key_list(&lods);
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for (const Variant &E : lods) {
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ERR_CONTINUE(!E.is_num());
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Surface::LOD lod;
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lod.distance = E;
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lod.indices = p_lods[E];
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ERR_CONTINUE(lod.indices.size() == 0);
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s.lods.push_back(lod);
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}
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s.material = p_material;
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surfaces.push_back(s);
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mesh.unref();
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}
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int ImporterMesh::get_surface_count() const {
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return surfaces.size();
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}
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Mesh::PrimitiveType ImporterMesh::get_surface_primitive_type(int p_surface) {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), Mesh::PRIMITIVE_MAX);
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return surfaces[p_surface].primitive;
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}
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Array ImporterMesh::get_surface_arrays(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), Array());
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return surfaces[p_surface].arrays;
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}
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String ImporterMesh::get_surface_name(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), String());
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return surfaces[p_surface].name;
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}
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void ImporterMesh::set_surface_name(int p_surface, const String &p_name) {
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ERR_FAIL_INDEX(p_surface, surfaces.size());
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surfaces.write[p_surface].name = p_name;
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mesh.unref();
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}
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Array ImporterMesh::get_surface_blend_shape_arrays(int p_surface, int p_blend_shape) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), Array());
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ERR_FAIL_INDEX_V(p_blend_shape, surfaces[p_surface].blend_shape_data.size(), Array());
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return surfaces[p_surface].blend_shape_data[p_blend_shape].arrays;
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}
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int ImporterMesh::get_surface_lod_count(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), 0);
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return surfaces[p_surface].lods.size();
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}
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Vector<int> ImporterMesh::get_surface_lod_indices(int p_surface, int p_lod) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), Vector<int>());
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ERR_FAIL_INDEX_V(p_lod, surfaces[p_surface].lods.size(), Vector<int>());
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return surfaces[p_surface].lods[p_lod].indices;
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}
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float ImporterMesh::get_surface_lod_size(int p_surface, int p_lod) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), 0);
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ERR_FAIL_INDEX_V(p_lod, surfaces[p_surface].lods.size(), 0);
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return surfaces[p_surface].lods[p_lod].distance;
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}
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uint64_t ImporterMesh::get_surface_format(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), 0);
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return surfaces[p_surface].flags;
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}
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Ref<Material> ImporterMesh::get_surface_material(int p_surface) const {
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ERR_FAIL_INDEX_V(p_surface, surfaces.size(), Ref<Material>());
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return surfaces[p_surface].material;
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}
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void ImporterMesh::set_surface_material(int p_surface, const Ref<Material> &p_material) {
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ERR_FAIL_INDEX(p_surface, surfaces.size());
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surfaces.write[p_surface].material = p_material;
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mesh.unref();
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}
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#define VERTEX_SKIN_FUNC(bone_count, vert_idx, read_array, write_array, transform_array, bone_array, weight_array) \
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Vector3 transformed_vert; \
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for (unsigned int weight_idx = 0; weight_idx < bone_count; weight_idx++) { \
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int bone_idx = bone_array[vert_idx * bone_count + weight_idx]; \
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float w = weight_array[vert_idx * bone_count + weight_idx]; \
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if (w < FLT_EPSILON) { \
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continue; \
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} \
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ERR_FAIL_INDEX(bone_idx, static_cast<int>(transform_array.size())); \
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transformed_vert += transform_array[bone_idx].xform(read_array[vert_idx]) * w; \
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} \
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write_array[vert_idx] = transformed_vert;
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void ImporterMesh::generate_lods(float p_normal_merge_angle, float p_normal_split_angle, Array p_bone_transform_array) {
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if (!SurfaceTool::simplify_scale_func) {
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return;
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}
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if (!SurfaceTool::simplify_with_attrib_func) {
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return;
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}
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if (!SurfaceTool::optimize_vertex_cache_func) {
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return;
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}
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LocalVector<Transform3D> bone_transform_vector;
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for (int i = 0; i < p_bone_transform_array.size(); i++) {
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ERR_FAIL_COND(p_bone_transform_array[i].get_type() != Variant::TRANSFORM3D);
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bone_transform_vector.push_back(p_bone_transform_array[i]);
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}
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for (int i = 0; i < surfaces.size(); i++) {
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if (surfaces[i].primitive != Mesh::PRIMITIVE_TRIANGLES) {
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continue;
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}
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surfaces.write[i].lods.clear();
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Vector<Vector3> vertices = surfaces[i].arrays[RS::ARRAY_VERTEX];
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PackedInt32Array indices = surfaces[i].arrays[RS::ARRAY_INDEX];
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Vector<Vector3> normals = surfaces[i].arrays[RS::ARRAY_NORMAL];
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Vector<Vector2> uvs = surfaces[i].arrays[RS::ARRAY_TEX_UV];
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Vector<Vector2> uv2s = surfaces[i].arrays[RS::ARRAY_TEX_UV2];
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Vector<int> bones = surfaces[i].arrays[RS::ARRAY_BONES];
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Vector<float> weights = surfaces[i].arrays[RS::ARRAY_WEIGHTS];
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unsigned int index_count = indices.size();
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unsigned int vertex_count = vertices.size();
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if (index_count == 0) {
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continue; //no lods if no indices
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}
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const Vector3 *vertices_ptr = vertices.ptr();
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const int *indices_ptr = indices.ptr();
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if (normals.is_empty()) {
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normals.resize(index_count);
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Vector3 *n_ptr = normals.ptrw();
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for (unsigned int j = 0; j < index_count; j += 3) {
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const Vector3 &v0 = vertices_ptr[indices_ptr[j + 0]];
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const Vector3 &v1 = vertices_ptr[indices_ptr[j + 1]];
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const Vector3 &v2 = vertices_ptr[indices_ptr[j + 2]];
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Vector3 n = vec3_cross(v0 - v2, v0 - v1).normalized();
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n_ptr[j + 0] = n;
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n_ptr[j + 1] = n;
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n_ptr[j + 2] = n;
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}
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}
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if (bones.size() > 0 && weights.size() && bone_transform_vector.size() > 0) {
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Vector3 *vertices_ptrw = vertices.ptrw();
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// Apply bone transforms to regular surface.
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unsigned int bone_weight_length = surfaces[i].flags & Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS ? 8 : 4;
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const int *bo = bones.ptr();
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const float *we = weights.ptr();
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for (unsigned int j = 0; j < vertex_count; j++) {
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VERTEX_SKIN_FUNC(bone_weight_length, j, vertices_ptr, vertices_ptrw, bone_transform_vector, bo, we)
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}
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vertices_ptr = vertices.ptr();
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}
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float normal_merge_threshold = Math::cos(Math::deg_to_rad(p_normal_merge_angle));
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float normal_pre_split_threshold = Math::cos(Math::deg_to_rad(MIN(180.0f, p_normal_split_angle * 2.0f)));
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float normal_split_threshold = Math::cos(Math::deg_to_rad(p_normal_split_angle));
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const Vector3 *normals_ptr = normals.ptr();
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HashMap<Vector3, LocalVector<Pair<int, int>>> unique_vertices;
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LocalVector<int> vertex_remap;
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LocalVector<int> vertex_inverse_remap;
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LocalVector<Vector3> merged_vertices;
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LocalVector<Vector3> merged_normals;
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LocalVector<int> merged_normals_counts;
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const Vector2 *uvs_ptr = uvs.ptr();
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const Vector2 *uv2s_ptr = uv2s.ptr();
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for (unsigned int j = 0; j < vertex_count; j++) {
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const Vector3 &v = vertices_ptr[j];
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const Vector3 &n = normals_ptr[j];
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HashMap<Vector3, LocalVector<Pair<int, int>>>::Iterator E = unique_vertices.find(v);
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if (E) {
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const LocalVector<Pair<int, int>> &close_verts = E->value;
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bool found = false;
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for (const Pair<int, int> &idx : close_verts) {
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bool is_uvs_close = (!uvs_ptr || uvs_ptr[j].distance_squared_to(uvs_ptr[idx.second]) < CMP_EPSILON2);
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bool is_uv2s_close = (!uv2s_ptr || uv2s_ptr[j].distance_squared_to(uv2s_ptr[idx.second]) < CMP_EPSILON2);
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ERR_FAIL_INDEX(idx.second, normals.size());
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bool is_normals_close = normals[idx.second].dot(n) > normal_merge_threshold;
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if (is_uvs_close && is_uv2s_close && is_normals_close) {
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vertex_remap.push_back(idx.first);
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merged_normals[idx.first] += normals[idx.second];
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merged_normals_counts[idx.first]++;
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found = true;
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break;
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}
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}
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if (!found) {
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int vcount = merged_vertices.size();
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unique_vertices[v].push_back(Pair<int, int>(vcount, j));
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vertex_inverse_remap.push_back(j);
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merged_vertices.push_back(v);
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vertex_remap.push_back(vcount);
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merged_normals.push_back(normals_ptr[j]);
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merged_normals_counts.push_back(1);
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}
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} else {
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int vcount = merged_vertices.size();
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unique_vertices[v] = LocalVector<Pair<int, int>>();
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unique_vertices[v].push_back(Pair<int, int>(vcount, j));
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vertex_inverse_remap.push_back(j);
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merged_vertices.push_back(v);
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vertex_remap.push_back(vcount);
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merged_normals.push_back(normals_ptr[j]);
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merged_normals_counts.push_back(1);
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}
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}
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LocalVector<int> merged_indices;
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merged_indices.resize(index_count);
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for (unsigned int j = 0; j < index_count; j++) {
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merged_indices[j] = vertex_remap[indices[j]];
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}
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unsigned int merged_vertex_count = merged_vertices.size();
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const Vector3 *merged_vertices_ptr = merged_vertices.ptr();
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const int32_t *merged_indices_ptr = merged_indices.ptr();
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{
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const int *counts_ptr = merged_normals_counts.ptr();
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Vector3 *merged_normals_ptrw = merged_normals.ptr();
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for (unsigned int j = 0; j < merged_vertex_count; j++) {
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merged_normals_ptrw[j] /= counts_ptr[j];
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}
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}
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|
|
|
LocalVector<float> normal_weights;
|
|
normal_weights.resize(merged_vertex_count);
|
|
for (unsigned int j = 0; j < merged_vertex_count; j++) {
|
|
normal_weights[j] = 2.0; // Give some weight to normal preservation, may be worth exposing as an import setting
|
|
}
|
|
|
|
Vector<float> merged_vertices_f32 = vector3_to_float32_array(merged_vertices_ptr, merged_vertex_count);
|
|
float scale = SurfaceTool::simplify_scale_func(merged_vertices_f32.ptr(), merged_vertex_count, sizeof(float) * 3);
|
|
|
|
unsigned int index_target = 12; // Start with the smallest target, 4 triangles
|
|
unsigned int last_index_count = 0;
|
|
|
|
int split_vertex_count = vertex_count;
|
|
LocalVector<Vector3> split_vertex_normals;
|
|
LocalVector<int> split_vertex_indices;
|
|
split_vertex_normals.reserve(index_count / 3);
|
|
split_vertex_indices.reserve(index_count / 3);
|
|
|
|
RandomPCG pcg;
|
|
pcg.seed(123456789); // Keep seed constant across imports
|
|
|
|
Ref<StaticRaycaster> raycaster = StaticRaycaster::create();
|
|
if (raycaster.is_valid()) {
|
|
raycaster->add_mesh(vertices, indices, 0);
|
|
raycaster->commit();
|
|
}
|
|
|
|
const float max_mesh_error = FLT_MAX; // We don't want to limit by error, just by index target
|
|
float mesh_error = 0.0f;
|
|
|
|
while (index_target < index_count) {
|
|
PackedInt32Array new_indices;
|
|
new_indices.resize(index_count);
|
|
|
|
Vector<float> merged_normals_f32 = vector3_to_float32_array(merged_normals.ptr(), merged_normals.size());
|
|
const int simplify_options = SurfaceTool::SIMPLIFY_LOCK_BORDER;
|
|
|
|
size_t new_index_count = SurfaceTool::simplify_with_attrib_func(
|
|
(unsigned int *)new_indices.ptrw(),
|
|
(const uint32_t *)merged_indices_ptr, index_count,
|
|
merged_vertices_f32.ptr(), merged_vertex_count,
|
|
sizeof(float) * 3, // Vertex stride
|
|
index_target,
|
|
max_mesh_error,
|
|
simplify_options,
|
|
&mesh_error,
|
|
merged_normals_f32.ptr(),
|
|
normal_weights.ptr(), 3);
|
|
|
|
if (new_index_count < last_index_count * 1.5f) {
|
|
index_target = index_target * 1.5f;
|
|
continue;
|
|
}
|
|
|
|
if (new_index_count == 0 || (new_index_count >= (index_count * 0.75f))) {
|
|
break;
|
|
}
|
|
if (new_index_count > 5000000) {
|
|
// This limit theoretically shouldn't be needed, but it's here
|
|
// as an ad-hoc fix to prevent a crash with complex meshes.
|
|
// The crash still happens with limit of 6000000, but 5000000 works.
|
|
// In the future, identify what's causing that crash and fix it.
|
|
WARN_PRINT("Mesh LOD generation failed for mesh " + get_name() + " surface " + itos(i) + ", mesh is too complex. Some automatic LODs were not generated.");
|
|
break;
|
|
}
|
|
|
|
new_indices.resize(new_index_count);
|
|
|
|
LocalVector<LocalVector<int>> vertex_corners;
|
|
vertex_corners.resize(vertex_count);
|
|
{
|
|
int *ptrw = new_indices.ptrw();
|
|
for (unsigned int j = 0; j < new_index_count; j++) {
|
|
const int &remapped = vertex_inverse_remap[ptrw[j]];
|
|
vertex_corners[remapped].push_back(j);
|
|
ptrw[j] = remapped;
|
|
}
|
|
}
|
|
|
|
if (raycaster.is_valid()) {
|
|
float error_factor = 1.0f / (scale * MAX(mesh_error, 0.15));
|
|
const float ray_bias = 0.05;
|
|
float ray_length = ray_bias + mesh_error * scale * 3.0f;
|
|
|
|
Vector<StaticRaycaster::Ray> rays;
|
|
LocalVector<Vector2> ray_uvs;
|
|
|
|
int32_t *new_indices_ptr = new_indices.ptrw();
|
|
|
|
int current_ray_count = 0;
|
|
for (unsigned int j = 0; j < new_index_count; j += 3) {
|
|
const Vector3 &v0 = vertices_ptr[new_indices_ptr[j + 0]];
|
|
const Vector3 &v1 = vertices_ptr[new_indices_ptr[j + 1]];
|
|
const Vector3 &v2 = vertices_ptr[new_indices_ptr[j + 2]];
|
|
Vector3 face_normal = vec3_cross(v0 - v2, v0 - v1);
|
|
float face_area = face_normal.length(); // Actually twice the face area, since it's the same error_factor on all faces, we don't care
|
|
if (!Math::is_finite(face_area) || face_area == 0) {
|
|
WARN_PRINT_ONCE("Ignoring face with non-finite normal in LOD generation.");
|
|
continue;
|
|
}
|
|
|
|
Vector3 dir = face_normal / face_area;
|
|
int ray_count = CLAMP(5.0 * face_area * error_factor, 16, 64);
|
|
|
|
rays.resize(current_ray_count + ray_count);
|
|
StaticRaycaster::Ray *rays_ptr = rays.ptrw();
|
|
|
|
ray_uvs.resize(current_ray_count + ray_count);
|
|
Vector2 *ray_uvs_ptr = ray_uvs.ptr();
|
|
|
|
for (int k = 0; k < ray_count; k++) {
|
|
float u = pcg.randf();
|
|
float v = pcg.randf();
|
|
|
|
if (u + v >= 1.0f) {
|
|
u = 1.0f - u;
|
|
v = 1.0f - v;
|
|
}
|
|
|
|
u = 0.9f * u + 0.05f / 3.0f; // Give barycentric coordinates some padding, we don't want to sample right on the edge
|
|
v = 0.9f * v + 0.05f / 3.0f; // v = (v - one_third) * 0.95f + one_third;
|
|
float w = 1.0f - u - v;
|
|
|
|
Vector3 org = v0 * w + v1 * u + v2 * v;
|
|
org -= dir * ray_bias;
|
|
rays_ptr[current_ray_count + k] = StaticRaycaster::Ray(org, dir, 0.0f, ray_length);
|
|
rays_ptr[current_ray_count + k].id = j / 3;
|
|
ray_uvs_ptr[current_ray_count + k] = Vector2(u, v);
|
|
}
|
|
|
|
current_ray_count += ray_count;
|
|
}
|
|
|
|
raycaster->intersect(rays);
|
|
|
|
LocalVector<Vector3> ray_normals;
|
|
LocalVector<real_t> ray_normal_weights;
|
|
|
|
ray_normals.resize(new_index_count);
|
|
ray_normal_weights.resize(new_index_count);
|
|
|
|
for (unsigned int j = 0; j < new_index_count; j++) {
|
|
ray_normal_weights[j] = 0.0f;
|
|
}
|
|
|
|
const StaticRaycaster::Ray *rp = rays.ptr();
|
|
for (int j = 0; j < rays.size(); j++) {
|
|
if (rp[j].geomID != 0) { // Ray missed
|
|
continue;
|
|
}
|
|
|
|
if (rp[j].normal.normalized().dot(rp[j].dir) > 0.0f) { // Hit a back face.
|
|
continue;
|
|
}
|
|
|
|
const float &u = rp[j].u;
|
|
const float &v = rp[j].v;
|
|
const float w = 1.0f - u - v;
|
|
|
|
const unsigned int &hit_tri_id = rp[j].primID;
|
|
const unsigned int &orig_tri_id = rp[j].id;
|
|
|
|
const Vector3 &n0 = normals_ptr[indices_ptr[hit_tri_id * 3 + 0]];
|
|
const Vector3 &n1 = normals_ptr[indices_ptr[hit_tri_id * 3 + 1]];
|
|
const Vector3 &n2 = normals_ptr[indices_ptr[hit_tri_id * 3 + 2]];
|
|
Vector3 normal = n0 * w + n1 * u + n2 * v;
|
|
|
|
Vector2 orig_uv = ray_uvs[j];
|
|
const real_t orig_bary[3] = { 1.0f - orig_uv.x - orig_uv.y, orig_uv.x, orig_uv.y };
|
|
for (int k = 0; k < 3; k++) {
|
|
int idx = orig_tri_id * 3 + k;
|
|
real_t weight = orig_bary[k];
|
|
ray_normals[idx] += normal * weight;
|
|
ray_normal_weights[idx] += weight;
|
|
}
|
|
}
|
|
|
|
for (unsigned int j = 0; j < new_index_count; j++) {
|
|
if (ray_normal_weights[j] < 1.0f) { // Not enough data, the new normal would be just a bad guess
|
|
ray_normals[j] = Vector3();
|
|
} else {
|
|
ray_normals[j] /= ray_normal_weights[j];
|
|
}
|
|
}
|
|
|
|
LocalVector<LocalVector<int>> normal_group_indices;
|
|
LocalVector<Vector3> normal_group_averages;
|
|
normal_group_indices.reserve(24);
|
|
normal_group_averages.reserve(24);
|
|
|
|
for (unsigned int j = 0; j < vertex_count; j++) {
|
|
const LocalVector<int> &corners = vertex_corners[j];
|
|
const Vector3 &vertex_normal = normals_ptr[j];
|
|
|
|
for (const int &corner_idx : corners) {
|
|
const Vector3 &ray_normal = ray_normals[corner_idx];
|
|
|
|
if (ray_normal.length_squared() < CMP_EPSILON2) {
|
|
continue;
|
|
}
|
|
|
|
bool found = false;
|
|
for (unsigned int l = 0; l < normal_group_indices.size(); l++) {
|
|
LocalVector<int> &group_indices = normal_group_indices[l];
|
|
Vector3 n = normal_group_averages[l] / group_indices.size();
|
|
if (n.dot(ray_normal) > normal_pre_split_threshold) {
|
|
found = true;
|
|
group_indices.push_back(corner_idx);
|
|
normal_group_averages[l] += ray_normal;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!found) {
|
|
normal_group_indices.push_back({ corner_idx });
|
|
normal_group_averages.push_back(ray_normal);
|
|
}
|
|
}
|
|
|
|
for (unsigned int k = 0; k < normal_group_indices.size(); k++) {
|
|
LocalVector<int> &group_indices = normal_group_indices[k];
|
|
Vector3 n = normal_group_averages[k] / group_indices.size();
|
|
|
|
if (vertex_normal.dot(n) < normal_split_threshold) {
|
|
split_vertex_indices.push_back(j);
|
|
split_vertex_normals.push_back(n);
|
|
int new_idx = split_vertex_count++;
|
|
for (const int &index : group_indices) {
|
|
new_indices_ptr[index] = new_idx;
|
|
}
|
|
}
|
|
}
|
|
|
|
normal_group_indices.clear();
|
|
normal_group_averages.clear();
|
|
}
|
|
}
|
|
|
|
Surface::LOD lod;
|
|
lod.distance = MAX(mesh_error * scale, CMP_EPSILON2);
|
|
lod.indices = new_indices;
|
|
surfaces.write[i].lods.push_back(lod);
|
|
index_target = MAX(new_index_count, index_target) * 2;
|
|
last_index_count = new_index_count;
|
|
|
|
if (mesh_error == 0.0f) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
surfaces.write[i].split_normals(split_vertex_indices, split_vertex_normals);
|
|
surfaces.write[i].lods.sort_custom<Surface::LODComparator>();
|
|
|
|
for (int j = 0; j < surfaces.write[i].lods.size(); j++) {
|
|
Surface::LOD &lod = surfaces.write[i].lods.write[j];
|
|
unsigned int *lod_indices_ptr = (unsigned int *)lod.indices.ptrw();
|
|
SurfaceTool::optimize_vertex_cache_func(lod_indices_ptr, lod_indices_ptr, lod.indices.size(), split_vertex_count);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ImporterMesh::has_mesh() const {
|
|
return mesh.is_valid();
|
|
}
|
|
|
|
Ref<ArrayMesh> ImporterMesh::get_mesh(const Ref<ArrayMesh> &p_base) {
|
|
ERR_FAIL_COND_V(surfaces.size() == 0, Ref<ArrayMesh>());
|
|
|
|
if (mesh.is_null()) {
|
|
if (p_base.is_valid()) {
|
|
mesh = p_base;
|
|
}
|
|
if (mesh.is_null()) {
|
|
mesh.instantiate();
|
|
}
|
|
mesh->set_name(get_name());
|
|
if (has_meta("import_id")) {
|
|
mesh->set_meta("import_id", get_meta("import_id"));
|
|
}
|
|
for (int i = 0; i < blend_shapes.size(); i++) {
|
|
mesh->add_blend_shape(blend_shapes[i]);
|
|
}
|
|
mesh->set_blend_shape_mode(blend_shape_mode);
|
|
for (int i = 0; i < surfaces.size(); i++) {
|
|
Array bs_data;
|
|
if (surfaces[i].blend_shape_data.size()) {
|
|
for (int j = 0; j < surfaces[i].blend_shape_data.size(); j++) {
|
|
bs_data.push_back(surfaces[i].blend_shape_data[j].arrays);
|
|
}
|
|
}
|
|
Dictionary lods;
|
|
if (surfaces[i].lods.size()) {
|
|
for (int j = 0; j < surfaces[i].lods.size(); j++) {
|
|
lods[surfaces[i].lods[j].distance] = surfaces[i].lods[j].indices;
|
|
}
|
|
}
|
|
|
|
mesh->add_surface_from_arrays(surfaces[i].primitive, surfaces[i].arrays, bs_data, lods, surfaces[i].flags);
|
|
if (surfaces[i].material.is_valid()) {
|
|
mesh->surface_set_material(mesh->get_surface_count() - 1, surfaces[i].material);
|
|
}
|
|
if (!surfaces[i].name.is_empty()) {
|
|
mesh->surface_set_name(mesh->get_surface_count() - 1, surfaces[i].name);
|
|
}
|
|
}
|
|
|
|
mesh->set_lightmap_size_hint(lightmap_size_hint);
|
|
|
|
if (shadow_mesh.is_valid()) {
|
|
Ref<ArrayMesh> shadow = shadow_mesh->get_mesh();
|
|
mesh->set_shadow_mesh(shadow);
|
|
}
|
|
}
|
|
|
|
return mesh;
|
|
}
|
|
|
|
void ImporterMesh::clear() {
|
|
surfaces.clear();
|
|
blend_shapes.clear();
|
|
mesh.unref();
|
|
}
|
|
|
|
void ImporterMesh::create_shadow_mesh() {
|
|
if (shadow_mesh.is_valid()) {
|
|
shadow_mesh.unref();
|
|
}
|
|
|
|
//no shadow mesh for blendshapes
|
|
if (blend_shapes.size() > 0) {
|
|
return;
|
|
}
|
|
//no shadow mesh for skeletons
|
|
for (int i = 0; i < surfaces.size(); i++) {
|
|
if (surfaces[i].arrays[RS::ARRAY_BONES].get_type() != Variant::NIL) {
|
|
return;
|
|
}
|
|
if (surfaces[i].arrays[RS::ARRAY_WEIGHTS].get_type() != Variant::NIL) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
shadow_mesh.instantiate();
|
|
|
|
for (int i = 0; i < surfaces.size(); i++) {
|
|
LocalVector<int> vertex_remap;
|
|
Vector<Vector3> new_vertices;
|
|
Vector<Vector3> vertices = surfaces[i].arrays[RS::ARRAY_VERTEX];
|
|
int vertex_count = vertices.size();
|
|
{
|
|
HashMap<Vector3, int> unique_vertices;
|
|
const Vector3 *vptr = vertices.ptr();
|
|
for (int j = 0; j < vertex_count; j++) {
|
|
const Vector3 &v = vptr[j];
|
|
|
|
HashMap<Vector3, int>::Iterator E = unique_vertices.find(v);
|
|
|
|
if (E) {
|
|
vertex_remap.push_back(E->value);
|
|
} else {
|
|
int vcount = unique_vertices.size();
|
|
unique_vertices[v] = vcount;
|
|
vertex_remap.push_back(vcount);
|
|
new_vertices.push_back(v);
|
|
}
|
|
}
|
|
}
|
|
|
|
Array new_surface;
|
|
new_surface.resize(RS::ARRAY_MAX);
|
|
Dictionary lods;
|
|
|
|
// print_line("original vertex count: " + itos(vertices.size()) + " new vertex count: " + itos(new_vertices.size()));
|
|
|
|
new_surface[RS::ARRAY_VERTEX] = new_vertices;
|
|
|
|
Vector<int> indices = surfaces[i].arrays[RS::ARRAY_INDEX];
|
|
if (indices.size()) {
|
|
int index_count = indices.size();
|
|
const int *index_rptr = indices.ptr();
|
|
Vector<int> new_indices;
|
|
new_indices.resize(indices.size());
|
|
int *index_wptr = new_indices.ptrw();
|
|
|
|
for (int j = 0; j < index_count; j++) {
|
|
int index = index_rptr[j];
|
|
ERR_FAIL_INDEX(index, vertex_count);
|
|
index_wptr[j] = vertex_remap[index];
|
|
}
|
|
|
|
new_surface[RS::ARRAY_INDEX] = new_indices;
|
|
|
|
// Make sure the same LODs as the full version are used.
|
|
// This makes it more coherent between rendered model and its shadows.
|
|
for (int j = 0; j < surfaces[i].lods.size(); j++) {
|
|
indices = surfaces[i].lods[j].indices;
|
|
|
|
index_count = indices.size();
|
|
index_rptr = indices.ptr();
|
|
new_indices.resize(indices.size());
|
|
index_wptr = new_indices.ptrw();
|
|
|
|
for (int k = 0; k < index_count; k++) {
|
|
int index = index_rptr[k];
|
|
ERR_FAIL_INDEX(index, vertex_count);
|
|
index_wptr[k] = vertex_remap[index];
|
|
}
|
|
|
|
lods[surfaces[i].lods[j].distance] = new_indices;
|
|
}
|
|
}
|
|
|
|
shadow_mesh->add_surface(surfaces[i].primitive, new_surface, Array(), lods, Ref<Material>(), surfaces[i].name, surfaces[i].flags);
|
|
}
|
|
}
|
|
|
|
Ref<ImporterMesh> ImporterMesh::get_shadow_mesh() const {
|
|
return shadow_mesh;
|
|
}
|
|
|
|
void ImporterMesh::_set_data(const Dictionary &p_data) {
|
|
clear();
|
|
if (p_data.has("blend_shape_names")) {
|
|
blend_shapes = p_data["blend_shape_names"];
|
|
}
|
|
if (p_data.has("surfaces")) {
|
|
Array surface_arr = p_data["surfaces"];
|
|
for (int i = 0; i < surface_arr.size(); i++) {
|
|
Dictionary s = surface_arr[i];
|
|
ERR_CONTINUE(!s.has("primitive"));
|
|
ERR_CONTINUE(!s.has("arrays"));
|
|
Mesh::PrimitiveType prim = Mesh::PrimitiveType(int(s["primitive"]));
|
|
ERR_CONTINUE(prim >= Mesh::PRIMITIVE_MAX);
|
|
Array arr = s["arrays"];
|
|
Dictionary lods;
|
|
String surf_name;
|
|
if (s.has("name")) {
|
|
surf_name = s["name"];
|
|
}
|
|
if (s.has("lods")) {
|
|
lods = s["lods"];
|
|
}
|
|
Array b_shapes;
|
|
if (s.has("b_shapes")) {
|
|
b_shapes = s["b_shapes"];
|
|
}
|
|
Ref<Material> material;
|
|
if (s.has("material")) {
|
|
material = s["material"];
|
|
}
|
|
uint32_t flags = 0;
|
|
if (s.has("flags")) {
|
|
flags = s["flags"];
|
|
}
|
|
add_surface(prim, arr, b_shapes, lods, material, surf_name, flags);
|
|
}
|
|
}
|
|
}
|
|
Dictionary ImporterMesh::_get_data() const {
|
|
Dictionary data;
|
|
if (blend_shapes.size()) {
|
|
data["blend_shape_names"] = blend_shapes;
|
|
}
|
|
Array surface_arr;
|
|
for (int i = 0; i < surfaces.size(); i++) {
|
|
Dictionary d;
|
|
d["primitive"] = surfaces[i].primitive;
|
|
d["arrays"] = surfaces[i].arrays;
|
|
if (surfaces[i].blend_shape_data.size()) {
|
|
Array bs_data;
|
|
for (int j = 0; j < surfaces[i].blend_shape_data.size(); j++) {
|
|
bs_data.push_back(surfaces[i].blend_shape_data[j].arrays);
|
|
}
|
|
d["blend_shapes"] = bs_data;
|
|
}
|
|
if (surfaces[i].lods.size()) {
|
|
Dictionary lods;
|
|
for (int j = 0; j < surfaces[i].lods.size(); j++) {
|
|
lods[surfaces[i].lods[j].distance] = surfaces[i].lods[j].indices;
|
|
}
|
|
d["lods"] = lods;
|
|
}
|
|
|
|
if (surfaces[i].material.is_valid()) {
|
|
d["material"] = surfaces[i].material;
|
|
}
|
|
|
|
if (!surfaces[i].name.is_empty()) {
|
|
d["name"] = surfaces[i].name;
|
|
}
|
|
|
|
if (surfaces[i].flags != 0) {
|
|
d["flags"] = surfaces[i].flags;
|
|
}
|
|
|
|
surface_arr.push_back(d);
|
|
}
|
|
data["surfaces"] = surface_arr;
|
|
return data;
|
|
}
|
|
|
|
Vector<Face3> ImporterMesh::get_faces() const {
|
|
Vector<Face3> faces;
|
|
for (int i = 0; i < surfaces.size(); i++) {
|
|
if (surfaces[i].primitive == Mesh::PRIMITIVE_TRIANGLES) {
|
|
Vector<Vector3> vertices = surfaces[i].arrays[Mesh::ARRAY_VERTEX];
|
|
Vector<int> indices = surfaces[i].arrays[Mesh::ARRAY_INDEX];
|
|
if (indices.size()) {
|
|
for (int j = 0; j < indices.size(); j += 3) {
|
|
Face3 f;
|
|
f.vertex[0] = vertices[indices[j + 0]];
|
|
f.vertex[1] = vertices[indices[j + 1]];
|
|
f.vertex[2] = vertices[indices[j + 2]];
|
|
faces.push_back(f);
|
|
}
|
|
} else {
|
|
for (int j = 0; j < vertices.size(); j += 3) {
|
|
Face3 f;
|
|
f.vertex[0] = vertices[j + 0];
|
|
f.vertex[1] = vertices[j + 1];
|
|
f.vertex[2] = vertices[j + 2];
|
|
faces.push_back(f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return faces;
|
|
}
|
|
|
|
Vector<Ref<Shape3D>> ImporterMesh::convex_decompose(const Ref<MeshConvexDecompositionSettings> &p_settings) const {
|
|
ERR_FAIL_NULL_V(Mesh::convex_decomposition_function, Vector<Ref<Shape3D>>());
|
|
|
|
const Vector<Face3> faces = get_faces();
|
|
int face_count = faces.size();
|
|
|
|
Vector<Vector3> vertices;
|
|
uint32_t vertex_count = 0;
|
|
vertices.resize(face_count * 3);
|
|
Vector<uint32_t> indices;
|
|
indices.resize(face_count * 3);
|
|
{
|
|
HashMap<Vector3, uint32_t> vertex_map;
|
|
Vector3 *vertex_w = vertices.ptrw();
|
|
uint32_t *index_w = indices.ptrw();
|
|
for (int i = 0; i < face_count; i++) {
|
|
for (int j = 0; j < 3; j++) {
|
|
const Vector3 &vertex = faces[i].vertex[j];
|
|
HashMap<Vector3, uint32_t>::Iterator found_vertex = vertex_map.find(vertex);
|
|
uint32_t index;
|
|
if (found_vertex) {
|
|
index = found_vertex->value;
|
|
} else {
|
|
index = ++vertex_count;
|
|
vertex_map[vertex] = index;
|
|
vertex_w[index] = vertex;
|
|
}
|
|
index_w[i * 3 + j] = index;
|
|
}
|
|
}
|
|
}
|
|
vertices.resize(vertex_count);
|
|
|
|
Vector<Vector<Vector3>> decomposed = Mesh::convex_decomposition_function((real_t *)vertices.ptr(), vertex_count, indices.ptr(), face_count, p_settings, nullptr);
|
|
|
|
Vector<Ref<Shape3D>> ret;
|
|
|
|
for (int i = 0; i < decomposed.size(); i++) {
|
|
Ref<ConvexPolygonShape3D> shape;
|
|
shape.instantiate();
|
|
shape->set_points(decomposed[i]);
|
|
ret.push_back(shape);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
Ref<ConvexPolygonShape3D> ImporterMesh::create_convex_shape(bool p_clean, bool p_simplify) const {
|
|
if (p_simplify) {
|
|
Ref<MeshConvexDecompositionSettings> settings;
|
|
settings.instantiate();
|
|
settings->set_max_convex_hulls(1);
|
|
Vector<Ref<Shape3D>> decomposed = convex_decompose(settings);
|
|
if (decomposed.size() == 1) {
|
|
return decomposed[0];
|
|
} else {
|
|
ERR_PRINT("Convex shape simplification failed, falling back to simpler process.");
|
|
}
|
|
}
|
|
|
|
Vector<Vector3> vertices;
|
|
for (int i = 0; i < get_surface_count(); i++) {
|
|
Array a = get_surface_arrays(i);
|
|
ERR_FAIL_COND_V(a.is_empty(), Ref<ConvexPolygonShape3D>());
|
|
Vector<Vector3> v = a[Mesh::ARRAY_VERTEX];
|
|
vertices.append_array(v);
|
|
}
|
|
|
|
Ref<ConvexPolygonShape3D> shape = memnew(ConvexPolygonShape3D);
|
|
|
|
if (p_clean) {
|
|
Geometry3D::MeshData md;
|
|
Error err = ConvexHullComputer::convex_hull(vertices, md);
|
|
if (err == OK) {
|
|
shape->set_points(md.vertices);
|
|
return shape;
|
|
} else {
|
|
ERR_PRINT("Convex shape cleaning failed, falling back to simpler process.");
|
|
}
|
|
}
|
|
|
|
shape->set_points(vertices);
|
|
return shape;
|
|
}
|
|
|
|
Ref<ConcavePolygonShape3D> ImporterMesh::create_trimesh_shape() const {
|
|
Vector<Face3> faces = get_faces();
|
|
if (faces.size() == 0) {
|
|
return Ref<ConcavePolygonShape3D>();
|
|
}
|
|
|
|
Vector<Vector3> face_points;
|
|
face_points.resize(faces.size() * 3);
|
|
|
|
for (int i = 0; i < face_points.size(); i += 3) {
|
|
Face3 f = faces.get(i / 3);
|
|
face_points.set(i, f.vertex[0]);
|
|
face_points.set(i + 1, f.vertex[1]);
|
|
face_points.set(i + 2, f.vertex[2]);
|
|
}
|
|
|
|
Ref<ConcavePolygonShape3D> shape = memnew(ConcavePolygonShape3D);
|
|
shape->set_faces(face_points);
|
|
return shape;
|
|
}
|
|
|
|
Ref<NavigationMesh> ImporterMesh::create_navigation_mesh() {
|
|
Vector<Face3> faces = get_faces();
|
|
if (faces.size() == 0) {
|
|
return Ref<NavigationMesh>();
|
|
}
|
|
|
|
HashMap<Vector3, int> unique_vertices;
|
|
LocalVector<int> face_indices;
|
|
|
|
for (int i = 0; i < faces.size(); i++) {
|
|
for (int j = 0; j < 3; j++) {
|
|
Vector3 v = faces[i].vertex[j];
|
|
int idx;
|
|
if (unique_vertices.has(v)) {
|
|
idx = unique_vertices[v];
|
|
} else {
|
|
idx = unique_vertices.size();
|
|
unique_vertices[v] = idx;
|
|
}
|
|
face_indices.push_back(idx);
|
|
}
|
|
}
|
|
|
|
Vector<Vector3> vertices;
|
|
vertices.resize(unique_vertices.size());
|
|
for (const KeyValue<Vector3, int> &E : unique_vertices) {
|
|
vertices.write[E.value] = E.key;
|
|
}
|
|
|
|
Ref<NavigationMesh> nm;
|
|
nm.instantiate();
|
|
nm->set_vertices(vertices);
|
|
|
|
Vector<int> v3;
|
|
v3.resize(3);
|
|
for (uint32_t i = 0; i < face_indices.size(); i += 3) {
|
|
v3.write[0] = face_indices[i + 0];
|
|
v3.write[1] = face_indices[i + 1];
|
|
v3.write[2] = face_indices[i + 2];
|
|
nm->add_polygon(v3);
|
|
}
|
|
|
|
return nm;
|
|
}
|
|
|
|
extern bool (*array_mesh_lightmap_unwrap_callback)(float p_texel_size, const float *p_vertices, const float *p_normals, int p_vertex_count, const int *p_indices, int p_index_count, const uint8_t *p_cache_data, bool *r_use_cache, uint8_t **r_mesh_cache, int *r_mesh_cache_size, float **r_uv, int **r_vertex, int *r_vertex_count, int **r_index, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y);
|
|
|
|
struct EditorSceneFormatImporterMeshLightmapSurface {
|
|
Ref<Material> material;
|
|
LocalVector<SurfaceTool::Vertex> vertices;
|
|
Mesh::PrimitiveType primitive = Mesh::PrimitiveType::PRIMITIVE_MAX;
|
|
uint64_t format = 0;
|
|
String name;
|
|
};
|
|
|
|
static const uint32_t custom_shift[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM1_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM2_SHIFT, Mesh::ARRAY_FORMAT_CUSTOM3_SHIFT };
|
|
|
|
Error ImporterMesh::lightmap_unwrap_cached(const Transform3D &p_base_transform, float p_texel_size, const Vector<uint8_t> &p_src_cache, Vector<uint8_t> &r_dst_cache) {
|
|
ERR_FAIL_NULL_V(array_mesh_lightmap_unwrap_callback, ERR_UNCONFIGURED);
|
|
ERR_FAIL_COND_V_MSG(blend_shapes.size() != 0, ERR_UNAVAILABLE, "Can't unwrap mesh with blend shapes.");
|
|
|
|
LocalVector<float> vertices;
|
|
LocalVector<float> normals;
|
|
LocalVector<int> indices;
|
|
LocalVector<float> uv;
|
|
LocalVector<Pair<int, int>> uv_indices;
|
|
|
|
Vector<EditorSceneFormatImporterMeshLightmapSurface> lightmap_surfaces;
|
|
|
|
// Keep only the scale
|
|
Basis basis = p_base_transform.get_basis();
|
|
Vector3 scale = Vector3(basis.get_column(0).length(), basis.get_column(1).length(), basis.get_column(2).length());
|
|
|
|
Transform3D transform;
|
|
transform.scale(scale);
|
|
|
|
Basis normal_basis = transform.basis.inverse().transposed();
|
|
|
|
for (int i = 0; i < get_surface_count(); i++) {
|
|
EditorSceneFormatImporterMeshLightmapSurface s;
|
|
s.primitive = get_surface_primitive_type(i);
|
|
|
|
ERR_FAIL_COND_V_MSG(s.primitive != Mesh::PRIMITIVE_TRIANGLES, ERR_UNAVAILABLE, "Only triangles are supported for lightmap unwrap.");
|
|
Array arrays = get_surface_arrays(i);
|
|
s.material = get_surface_material(i);
|
|
s.name = get_surface_name(i);
|
|
|
|
SurfaceTool::create_vertex_array_from_triangle_arrays(arrays, s.vertices, &s.format);
|
|
|
|
PackedVector3Array rvertices = arrays[Mesh::ARRAY_VERTEX];
|
|
int vc = rvertices.size();
|
|
|
|
PackedVector3Array rnormals = arrays[Mesh::ARRAY_NORMAL];
|
|
|
|
if (!rnormals.size()) {
|
|
continue;
|
|
}
|
|
|
|
int vertex_ofs = vertices.size() / 3;
|
|
|
|
vertices.resize((vertex_ofs + vc) * 3);
|
|
normals.resize((vertex_ofs + vc) * 3);
|
|
uv_indices.resize(vertex_ofs + vc);
|
|
|
|
for (int j = 0; j < vc; j++) {
|
|
Vector3 v = transform.xform(rvertices[j]);
|
|
Vector3 n = normal_basis.xform(rnormals[j]).normalized();
|
|
|
|
vertices[(j + vertex_ofs) * 3 + 0] = v.x;
|
|
vertices[(j + vertex_ofs) * 3 + 1] = v.y;
|
|
vertices[(j + vertex_ofs) * 3 + 2] = v.z;
|
|
normals[(j + vertex_ofs) * 3 + 0] = n.x;
|
|
normals[(j + vertex_ofs) * 3 + 1] = n.y;
|
|
normals[(j + vertex_ofs) * 3 + 2] = n.z;
|
|
uv_indices[j + vertex_ofs] = Pair<int, int>(i, j);
|
|
}
|
|
|
|
PackedInt32Array rindices = arrays[Mesh::ARRAY_INDEX];
|
|
int ic = rindices.size();
|
|
|
|
float eps = 1.19209290e-7F; // Taken from xatlas.h
|
|
if (ic == 0) {
|
|
for (int j = 0; j < vc / 3; j++) {
|
|
Vector3 p0 = transform.xform(rvertices[j * 3 + 0]);
|
|
Vector3 p1 = transform.xform(rvertices[j * 3 + 1]);
|
|
Vector3 p2 = transform.xform(rvertices[j * 3 + 2]);
|
|
|
|
if ((p0 - p1).length_squared() < eps || (p1 - p2).length_squared() < eps || (p2 - p0).length_squared() < eps) {
|
|
continue;
|
|
}
|
|
|
|
indices.push_back(vertex_ofs + j * 3 + 0);
|
|
indices.push_back(vertex_ofs + j * 3 + 1);
|
|
indices.push_back(vertex_ofs + j * 3 + 2);
|
|
}
|
|
|
|
} else {
|
|
for (int j = 0; j < ic / 3; j++) {
|
|
ERR_FAIL_INDEX_V(rindices[j * 3 + 0], rvertices.size(), ERR_INVALID_DATA);
|
|
ERR_FAIL_INDEX_V(rindices[j * 3 + 1], rvertices.size(), ERR_INVALID_DATA);
|
|
ERR_FAIL_INDEX_V(rindices[j * 3 + 2], rvertices.size(), ERR_INVALID_DATA);
|
|
Vector3 p0 = transform.xform(rvertices[rindices[j * 3 + 0]]);
|
|
Vector3 p1 = transform.xform(rvertices[rindices[j * 3 + 1]]);
|
|
Vector3 p2 = transform.xform(rvertices[rindices[j * 3 + 2]]);
|
|
|
|
if ((p0 - p1).length_squared() < eps || (p1 - p2).length_squared() < eps || (p2 - p0).length_squared() < eps) {
|
|
continue;
|
|
}
|
|
|
|
indices.push_back(vertex_ofs + rindices[j * 3 + 0]);
|
|
indices.push_back(vertex_ofs + rindices[j * 3 + 1]);
|
|
indices.push_back(vertex_ofs + rindices[j * 3 + 2]);
|
|
}
|
|
}
|
|
|
|
lightmap_surfaces.push_back(s);
|
|
}
|
|
|
|
//unwrap
|
|
|
|
bool use_cache = true; // Used to request cache generation and to know if cache was used
|
|
uint8_t *gen_cache;
|
|
int gen_cache_size;
|
|
float *gen_uvs;
|
|
int *gen_vertices;
|
|
int *gen_indices;
|
|
int gen_vertex_count;
|
|
int gen_index_count;
|
|
int size_x;
|
|
int size_y;
|
|
|
|
bool ok = array_mesh_lightmap_unwrap_callback(p_texel_size, vertices.ptr(), normals.ptr(), vertices.size() / 3, indices.ptr(), indices.size(), p_src_cache.ptr(), &use_cache, &gen_cache, &gen_cache_size, &gen_uvs, &gen_vertices, &gen_vertex_count, &gen_indices, &gen_index_count, &size_x, &size_y);
|
|
|
|
if (!ok) {
|
|
return ERR_CANT_CREATE;
|
|
}
|
|
|
|
//create surfacetools for each surface..
|
|
LocalVector<Ref<SurfaceTool>> surfaces_tools;
|
|
|
|
for (int i = 0; i < lightmap_surfaces.size(); i++) {
|
|
Ref<SurfaceTool> st;
|
|
st.instantiate();
|
|
st->set_skin_weight_count((lightmap_surfaces[i].format & Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS) ? SurfaceTool::SKIN_8_WEIGHTS : SurfaceTool::SKIN_4_WEIGHTS);
|
|
st->begin(Mesh::PRIMITIVE_TRIANGLES);
|
|
st->set_material(lightmap_surfaces[i].material);
|
|
st->set_meta("name", lightmap_surfaces[i].name);
|
|
|
|
for (int custom_i = 0; custom_i < RS::ARRAY_CUSTOM_COUNT; custom_i++) {
|
|
st->set_custom_format(custom_i, (SurfaceTool::CustomFormat)((lightmap_surfaces[i].format >> custom_shift[custom_i]) & RS::ARRAY_FORMAT_CUSTOM_MASK));
|
|
}
|
|
surfaces_tools.push_back(st); //stay there
|
|
}
|
|
|
|
//remove surfaces
|
|
clear();
|
|
|
|
print_verbose("Mesh: Gen indices: " + itos(gen_index_count));
|
|
|
|
//go through all indices
|
|
for (int i = 0; i < gen_index_count; i += 3) {
|
|
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 0]], (int)uv_indices.size(), ERR_BUG);
|
|
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 1]], (int)uv_indices.size(), ERR_BUG);
|
|
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 2]], (int)uv_indices.size(), ERR_BUG);
|
|
|
|
ERR_FAIL_COND_V(uv_indices[gen_vertices[gen_indices[i + 0]]].first != uv_indices[gen_vertices[gen_indices[i + 1]]].first || uv_indices[gen_vertices[gen_indices[i + 0]]].first != uv_indices[gen_vertices[gen_indices[i + 2]]].first, ERR_BUG);
|
|
|
|
int surface = uv_indices[gen_vertices[gen_indices[i + 0]]].first;
|
|
|
|
for (int j = 0; j < 3; j++) {
|
|
SurfaceTool::Vertex v = lightmap_surfaces[surface].vertices[uv_indices[gen_vertices[gen_indices[i + j]]].second];
|
|
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_COLOR) {
|
|
surfaces_tools[surface]->set_color(v.color);
|
|
}
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_TEX_UV) {
|
|
surfaces_tools[surface]->set_uv(v.uv);
|
|
}
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_NORMAL) {
|
|
surfaces_tools[surface]->set_normal(v.normal);
|
|
}
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_TANGENT) {
|
|
Plane t;
|
|
t.normal = v.tangent;
|
|
t.d = v.binormal.dot(v.normal.cross(v.tangent)) < 0 ? -1 : 1;
|
|
surfaces_tools[surface]->set_tangent(t);
|
|
}
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_BONES) {
|
|
surfaces_tools[surface]->set_bones(v.bones);
|
|
}
|
|
if (lightmap_surfaces[surface].format & Mesh::ARRAY_FORMAT_WEIGHTS) {
|
|
surfaces_tools[surface]->set_weights(v.weights);
|
|
}
|
|
for (int custom_i = 0; custom_i < RS::ARRAY_CUSTOM_COUNT; custom_i++) {
|
|
if ((lightmap_surfaces[surface].format >> custom_shift[custom_i]) & RS::ARRAY_FORMAT_CUSTOM_MASK) {
|
|
surfaces_tools[surface]->set_custom(custom_i, v.custom[custom_i]);
|
|
}
|
|
}
|
|
|
|
Vector2 uv2(gen_uvs[gen_indices[i + j] * 2 + 0], gen_uvs[gen_indices[i + j] * 2 + 1]);
|
|
surfaces_tools[surface]->set_uv2(uv2);
|
|
|
|
surfaces_tools[surface]->add_vertex(v.vertex);
|
|
}
|
|
}
|
|
|
|
//generate surfaces
|
|
for (int i = 0; i < lightmap_surfaces.size(); i++) {
|
|
Ref<SurfaceTool> &tool = surfaces_tools[i];
|
|
tool->index();
|
|
Array arrays = tool->commit_to_arrays();
|
|
|
|
uint64_t format = lightmap_surfaces[i].format;
|
|
if (tool->get_skin_weight_count() == SurfaceTool::SKIN_8_WEIGHTS) {
|
|
format |= RS::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
|
|
} else {
|
|
format &= ~RS::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
|
|
}
|
|
|
|
add_surface(tool->get_primitive_type(), arrays, Array(), Dictionary(), tool->get_material(), tool->get_meta("name"), format);
|
|
}
|
|
|
|
set_lightmap_size_hint(Size2(size_x, size_y));
|
|
|
|
if (gen_cache_size > 0) {
|
|
r_dst_cache.resize(gen_cache_size);
|
|
memcpy(r_dst_cache.ptrw(), gen_cache, gen_cache_size);
|
|
memfree(gen_cache);
|
|
}
|
|
|
|
if (!use_cache) {
|
|
// Cache was not used, free the buffers
|
|
memfree(gen_vertices);
|
|
memfree(gen_indices);
|
|
memfree(gen_uvs);
|
|
}
|
|
|
|
return OK;
|
|
}
|
|
|
|
void ImporterMesh::set_lightmap_size_hint(const Size2i &p_size) {
|
|
lightmap_size_hint = p_size;
|
|
}
|
|
|
|
Size2i ImporterMesh::get_lightmap_size_hint() const {
|
|
return lightmap_size_hint;
|
|
}
|
|
|
|
void ImporterMesh::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("add_blend_shape", "name"), &ImporterMesh::add_blend_shape);
|
|
ClassDB::bind_method(D_METHOD("get_blend_shape_count"), &ImporterMesh::get_blend_shape_count);
|
|
ClassDB::bind_method(D_METHOD("get_blend_shape_name", "blend_shape_idx"), &ImporterMesh::get_blend_shape_name);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_blend_shape_mode", "mode"), &ImporterMesh::set_blend_shape_mode);
|
|
ClassDB::bind_method(D_METHOD("get_blend_shape_mode"), &ImporterMesh::get_blend_shape_mode);
|
|
|
|
ClassDB::bind_method(D_METHOD("add_surface", "primitive", "arrays", "blend_shapes", "lods", "material", "name", "flags"), &ImporterMesh::add_surface, DEFVAL(TypedArray<Array>()), DEFVAL(Dictionary()), DEFVAL(Ref<Material>()), DEFVAL(String()), DEFVAL(0));
|
|
|
|
ClassDB::bind_method(D_METHOD("get_surface_count"), &ImporterMesh::get_surface_count);
|
|
ClassDB::bind_method(D_METHOD("get_surface_primitive_type", "surface_idx"), &ImporterMesh::get_surface_primitive_type);
|
|
ClassDB::bind_method(D_METHOD("get_surface_name", "surface_idx"), &ImporterMesh::get_surface_name);
|
|
ClassDB::bind_method(D_METHOD("get_surface_arrays", "surface_idx"), &ImporterMesh::get_surface_arrays);
|
|
ClassDB::bind_method(D_METHOD("get_surface_blend_shape_arrays", "surface_idx", "blend_shape_idx"), &ImporterMesh::get_surface_blend_shape_arrays);
|
|
ClassDB::bind_method(D_METHOD("get_surface_lod_count", "surface_idx"), &ImporterMesh::get_surface_lod_count);
|
|
ClassDB::bind_method(D_METHOD("get_surface_lod_size", "surface_idx", "lod_idx"), &ImporterMesh::get_surface_lod_size);
|
|
ClassDB::bind_method(D_METHOD("get_surface_lod_indices", "surface_idx", "lod_idx"), &ImporterMesh::get_surface_lod_indices);
|
|
ClassDB::bind_method(D_METHOD("get_surface_material", "surface_idx"), &ImporterMesh::get_surface_material);
|
|
ClassDB::bind_method(D_METHOD("get_surface_format", "surface_idx"), &ImporterMesh::get_surface_format);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_surface_name", "surface_idx", "name"), &ImporterMesh::set_surface_name);
|
|
ClassDB::bind_method(D_METHOD("set_surface_material", "surface_idx", "material"), &ImporterMesh::set_surface_material);
|
|
|
|
ClassDB::bind_method(D_METHOD("generate_lods", "normal_merge_angle", "normal_split_angle", "bone_transform_array"), &ImporterMesh::generate_lods);
|
|
ClassDB::bind_method(D_METHOD("get_mesh", "base_mesh"), &ImporterMesh::get_mesh, DEFVAL(Ref<ArrayMesh>()));
|
|
ClassDB::bind_method(D_METHOD("clear"), &ImporterMesh::clear);
|
|
|
|
ClassDB::bind_method(D_METHOD("_set_data", "data"), &ImporterMesh::_set_data);
|
|
ClassDB::bind_method(D_METHOD("_get_data"), &ImporterMesh::_get_data);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_lightmap_size_hint", "size"), &ImporterMesh::set_lightmap_size_hint);
|
|
ClassDB::bind_method(D_METHOD("get_lightmap_size_hint"), &ImporterMesh::get_lightmap_size_hint);
|
|
|
|
ADD_PROPERTY(PropertyInfo(Variant::DICTIONARY, "_data", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "_set_data", "_get_data");
|
|
}
|