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godot/scene/resources/surface_tool.cpp
reduz 77a045e902 Rework Mesh handling on scene importing. 
-Reworked how meshes are treated by importer by using EditorSceneImporterMesh and EditorSceneImporterMeshNode. Instead of Mesh and MeshInstance, this allows more efficient processing of meshes before they are actually registered in the RenderingServer.
-Integrated MeshOptimizer
-Reworked internals of SurfaceTool to use arrays, making it more performant and easy to run optimizatons on.
2020-12-13 21:29:51 -03:00

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/*************************************************************************/
/* surface_tool.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "surface_tool.h"
#define _VERTEX_SNAP 0.0001
#define EQ_VERTEX_DIST 0.00001
SurfaceTool::OptimizeVertexCacheFunc SurfaceTool::optimize_vertex_cache_func = nullptr;
SurfaceTool::SimplifyFunc SurfaceTool::simplify_func = nullptr;
bool SurfaceTool::Vertex::operator==(const Vertex &p_vertex) const {
if (vertex != p_vertex.vertex) {
return false;
}
if (uv != p_vertex.uv) {
return false;
}
if (uv2 != p_vertex.uv2) {
return false;
}
if (normal != p_vertex.normal) {
return false;
}
if (binormal != p_vertex.binormal) {
return false;
}
if (color != p_vertex.color) {
return false;
}
if (bones.size() != p_vertex.bones.size()) {
return false;
}
for (int i = 0; i < bones.size(); i++) {
if (bones[i] != p_vertex.bones[i]) {
return false;
}
}
for (int i = 0; i < weights.size(); i++) {
if (weights[i] != p_vertex.weights[i]) {
return false;
}
}
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
if (custom[i] != p_vertex.custom[i]) {
return false;
}
}
if (smooth_group != p_vertex.smooth_group) {
return false;
}
return true;
}
uint32_t SurfaceTool::VertexHasher::hash(const Vertex &p_vtx) {
uint32_t h = hash_djb2_buffer((const uint8_t *)&p_vtx.vertex, sizeof(real_t) * 3);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.normal, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.binormal, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.tangent, sizeof(real_t) * 3, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.uv, sizeof(real_t) * 2, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.uv2, sizeof(real_t) * 2, h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.color, sizeof(real_t) * 4, h);
h = hash_djb2_buffer((const uint8_t *)p_vtx.bones.ptr(), p_vtx.bones.size() * sizeof(int), h);
h = hash_djb2_buffer((const uint8_t *)p_vtx.weights.ptr(), p_vtx.weights.size() * sizeof(float), h);
h = hash_djb2_buffer((const uint8_t *)&p_vtx.custom[0], sizeof(Color) * RS::ARRAY_CUSTOM_COUNT, h);
h = hash_djb2_one_32(p_vtx.smooth_group, h);
return h;
}
void SurfaceTool::begin(Mesh::PrimitiveType p_primitive) {
clear();
primitive = p_primitive;
begun = true;
first = true;
}
void SurfaceTool::add_vertex(const Vector3 &p_vertex) {
ERR_FAIL_COND(!begun);
Vertex vtx;
vtx.vertex = p_vertex;
vtx.color = last_color;
vtx.normal = last_normal;
vtx.uv = last_uv;
vtx.uv2 = last_uv2;
vtx.weights = last_weights;
vtx.bones = last_bones;
vtx.tangent = last_tangent.normal;
vtx.binormal = last_normal.cross(last_tangent.normal).normalized() * last_tangent.d;
vtx.smooth_group = last_smooth_group;
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
vtx.custom[i] = last_custom[i];
}
const int expected_vertices = skin_weights == SKIN_8_WEIGHTS ? 8 : 4;
if ((format & Mesh::ARRAY_FORMAT_WEIGHTS || format & Mesh::ARRAY_FORMAT_BONES) && (vtx.weights.size() != expected_vertices || vtx.bones.size() != expected_vertices)) {
//ensure vertices are the expected amount
ERR_FAIL_COND(vtx.weights.size() != vtx.bones.size());
if (vtx.weights.size() < expected_vertices) {
//less than required, fill
for (int i = vtx.weights.size(); i < expected_vertices; i++) {
vtx.weights.push_back(0);
vtx.bones.push_back(0);
}
} else if (vtx.weights.size() > expected_vertices) {
//more than required, sort, cap and normalize.
Vector<WeightSort> weights;
for (int i = 0; i < vtx.weights.size(); i++) {
WeightSort ws;
ws.index = vtx.bones[i];
ws.weight = vtx.weights[i];
weights.push_back(ws);
}
//sort
weights.sort();
//cap
weights.resize(expected_vertices);
//renormalize
float total = 0;
for (int i = 0; i < expected_vertices; i++) {
total += weights[i].weight;
}
vtx.weights.resize(expected_vertices);
vtx.bones.resize(expected_vertices);
for (int i = 0; i < expected_vertices; i++) {
if (total > 0) {
vtx.weights.write[i] = weights[i].weight / total;
} else {
vtx.weights.write[i] = 0;
}
vtx.bones.write[i] = weights[i].index;
}
}
}
vertex_array.push_back(vtx);
first = false;
format |= Mesh::ARRAY_FORMAT_VERTEX;
}
void SurfaceTool::set_color(Color p_color) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_COLOR));
format |= Mesh::ARRAY_FORMAT_COLOR;
last_color = p_color;
}
void SurfaceTool::set_normal(const Vector3 &p_normal) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_NORMAL));
format |= Mesh::ARRAY_FORMAT_NORMAL;
last_normal = p_normal;
}
void SurfaceTool::set_tangent(const Plane &p_tangent) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_TANGENT));
format |= Mesh::ARRAY_FORMAT_TANGENT;
last_tangent = p_tangent;
}
void SurfaceTool::set_uv(const Vector2 &p_uv) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_TEX_UV));
format |= Mesh::ARRAY_FORMAT_TEX_UV;
last_uv = p_uv;
}
void SurfaceTool::set_uv2(const Vector2 &p_uv2) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_TEX_UV2));
format |= Mesh::ARRAY_FORMAT_TEX_UV2;
last_uv2 = p_uv2;
}
void SurfaceTool::set_custom(int p_index, const Color &p_custom) {
ERR_FAIL_INDEX(p_index, RS::ARRAY_CUSTOM_COUNT);
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(last_custom_format[p_index] == CUSTOM_MAX);
static const uint32_t mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
static const uint32_t 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 };
ERR_FAIL_COND(!first && !(format & mask[p_index]));
if (first) {
format |= mask[p_index];
format |= last_custom_format[p_index] << shift[p_index];
}
last_custom[p_index] = p_custom;
}
void SurfaceTool::set_bones(const Vector<int> &p_bones) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_BONES));
format |= Mesh::ARRAY_FORMAT_BONES;
if (skin_weights == SKIN_8_WEIGHTS) {
format |= Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
last_bones = p_bones;
}
void SurfaceTool::set_weights(const Vector<float> &p_weights) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(!first && !(format & Mesh::ARRAY_FORMAT_WEIGHTS));
format |= Mesh::ARRAY_FORMAT_WEIGHTS;
if (skin_weights == SKIN_8_WEIGHTS) {
format |= Mesh::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
last_weights = p_weights;
}
void SurfaceTool::set_smooth_group(uint32_t p_group) {
last_smooth_group = p_group;
}
void SurfaceTool::add_triangle_fan(const Vector<Vector3> &p_vertices, const Vector<Vector2> &p_uvs, const Vector<Color> &p_colors, const Vector<Vector2> &p_uv2s, const Vector<Vector3> &p_normals, const Vector<Plane> &p_tangents) {
ERR_FAIL_COND(!begun);
ERR_FAIL_COND(primitive != Mesh::PRIMITIVE_TRIANGLES);
ERR_FAIL_COND(p_vertices.size() < 3);
#define ADD_POINT(n) \
{ \
if (p_colors.size() > n) \
set_color(p_colors[n]); \
if (p_uvs.size() > n) \
set_uv(p_uvs[n]); \
if (p_uv2s.size() > n) \
set_uv2(p_uv2s[n]); \
if (p_normals.size() > n) \
set_normal(p_normals[n]); \
if (p_tangents.size() > n) \
set_tangent(p_tangents[n]); \
add_vertex(p_vertices[n]); \
}
for (int i = 0; i < p_vertices.size() - 2; i++) {
ADD_POINT(0);
ADD_POINT(i + 1);
ADD_POINT(i + 2);
}
#undef ADD_POINT
}
void SurfaceTool::add_index(int p_index) {
ERR_FAIL_COND(!begun);
format |= Mesh::ARRAY_FORMAT_INDEX;
index_array.push_back(p_index);
}
Array SurfaceTool::commit_to_arrays() {
int varr_len = vertex_array.size();
Array a;
a.resize(Mesh::ARRAY_MAX);
for (int i = 0; i < Mesh::ARRAY_MAX; i++) {
if (!(format & (1 << i))) {
continue; //not in format
}
switch (i) {
case Mesh::ARRAY_VERTEX:
case Mesh::ARRAY_NORMAL: {
Vector<Vector3> array;
array.resize(varr_len);
Vector3 *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
switch (i) {
case Mesh::ARRAY_VERTEX: {
w[idx] = v.vertex;
} break;
case Mesh::ARRAY_NORMAL: {
w[idx] = v.normal;
} break;
}
}
a[i] = array;
} break;
case Mesh::ARRAY_TEX_UV:
case Mesh::ARRAY_TEX_UV2: {
Vector<Vector2> array;
array.resize(varr_len);
Vector2 *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
switch (i) {
case Mesh::ARRAY_TEX_UV: {
w[idx] = v.uv;
} break;
case Mesh::ARRAY_TEX_UV2: {
w[idx] = v.uv2;
} break;
}
}
a[i] = array;
} break;
case Mesh::ARRAY_TANGENT: {
Vector<float> array;
array.resize(varr_len * 4);
float *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
w[idx + 0] = v.tangent.x;
w[idx + 1] = v.tangent.y;
w[idx + 2] = v.tangent.z;
//float d = v.tangent.dot(v.binormal,v.normal);
float d = v.binormal.dot(v.normal.cross(v.tangent));
w[idx + 3] = d < 0 ? -1 : 1;
}
a[i] = array;
} break;
case Mesh::ARRAY_COLOR: {
Vector<Color> array;
array.resize(varr_len);
Color *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
w[idx] = v.color;
}
a[i] = array;
} break;
case Mesh::ARRAY_CUSTOM0:
case Mesh::ARRAY_CUSTOM1:
case Mesh::ARRAY_CUSTOM2:
case Mesh::ARRAY_CUSTOM3: {
int fmt = i - Mesh::ARRAY_CUSTOM0;
switch (last_custom_format[fmt]) {
case CUSTOM_RGBA8_UNORM: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint8_t *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 4 + 0] = CLAMP(int32_t(c.r * 255.0), 0, 255);
w[idx * 4 + 1] = CLAMP(int32_t(c.g * 255.0), 0, 255);
w[idx * 4 + 2] = CLAMP(int32_t(c.b * 255.0), 0, 255);
w[idx * 4 + 3] = CLAMP(int32_t(c.a * 255.0), 0, 255);
}
a[i] = array;
} break;
case CUSTOM_RGBA8_SNORM: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint8_t *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 4 + 0] = uint8_t(int8_t(CLAMP(int32_t(c.r * 127.0), -128, 127)));
w[idx * 4 + 1] = uint8_t(int8_t(CLAMP(int32_t(c.g * 127.0), -128, 127)));
w[idx * 4 + 2] = uint8_t(int8_t(CLAMP(int32_t(c.b * 127.0), -128, 127)));
w[idx * 4 + 3] = uint8_t(int8_t(CLAMP(int32_t(c.a * 127.0), -128, 127)));
}
a[i] = array;
} break;
case CUSTOM_RG_HALF: {
Vector<uint8_t> array;
array.resize(varr_len * 4);
uint16_t *w = (uint16_t *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 2 + 0] = Math::make_half_float(c.r);
w[idx * 2 + 1] = Math::make_half_float(c.g);
}
a[i] = array;
} break;
case CUSTOM_RGBA_HALF: {
Vector<uint8_t> array;
array.resize(varr_len * 8);
uint16_t *w = (uint16_t *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 4 + 0] = Math::make_half_float(c.r);
w[idx * 4 + 1] = Math::make_half_float(c.g);
w[idx * 4 + 2] = Math::make_half_float(c.b);
w[idx * 4 + 3] = Math::make_half_float(c.a);
}
a[i] = array;
} break;
case CUSTOM_R_FLOAT: {
Vector<float> array;
array.resize(varr_len);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx] = c.r;
}
a[i] = array;
} break;
case CUSTOM_RG_FLOAT: {
Vector<float> array;
array.resize(varr_len * 2);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 2 + 0] = c.r;
w[idx * 2 + 1] = c.g;
}
a[i] = array;
} break;
case CUSTOM_RGB_FLOAT: {
Vector<float> array;
array.resize(varr_len * 3);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 3 + 0] = c.r;
w[idx * 3 + 1] = c.g;
w[idx * 3 + 2] = c.b;
}
a[i] = array;
} break;
case CUSTOM_RGBA_FLOAT: {
Vector<float> array;
array.resize(varr_len * 4);
float *w = (float *)array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
const Color &c = v.custom[idx];
w[idx * 4 + 0] = c.r;
w[idx * 4 + 1] = c.g;
w[idx * 4 + 2] = c.b;
w[idx * 4 + 3] = c.a;
}
a[i] = array;
} break;
default: {
} //unreachable but compiler warning anyway
}
} break;
case Mesh::ARRAY_BONES: {
int count = skin_weights == SKIN_8_WEIGHTS ? 8 : 4;
Vector<int> array;
array.resize(varr_len * count);
int *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
ERR_CONTINUE(v.bones.size() != count);
for (int j = 0; j < count; j++) {
w[idx + j] = v.bones[j];
}
}
a[i] = array;
} break;
case Mesh::ARRAY_WEIGHTS: {
Vector<float> array;
int count = skin_weights == SKIN_8_WEIGHTS ? 8 : 4;
array.resize(varr_len * count);
float *w = array.ptrw();
for (uint32_t idx = 0; idx < vertex_array.size(); idx++) {
const Vertex &v = vertex_array[idx];
ERR_CONTINUE(v.weights.size() != count);
for (int j = 0; j < count; j++) {
w[idx + j] = v.weights[j];
}
}
a[i] = array;
} break;
case Mesh::ARRAY_INDEX: {
ERR_CONTINUE(index_array.size() == 0);
Vector<int> array;
array.resize(index_array.size());
int *w = array.ptrw();
for (uint32_t idx = 0; idx < index_array.size(); idx++) {
w[idx] = index_array[idx];
}
a[i] = array;
} break;
default: {
}
}
}
return a;
}
Ref<ArrayMesh> SurfaceTool::commit(const Ref<ArrayMesh> &p_existing, uint32_t p_flags) {
Ref<ArrayMesh> mesh;
if (p_existing.is_valid()) {
mesh = p_existing;
} else {
mesh.instance();
}
int varr_len = vertex_array.size();
if (varr_len == 0) {
return mesh;
}
int surface = mesh->get_surface_count();
Array a = commit_to_arrays();
mesh->add_surface_from_arrays(primitive, a, Array(), Dictionary(), p_flags);
if (material.is_valid()) {
mesh->surface_set_material(surface, material);
}
return mesh;
}
void SurfaceTool::index() {
if (index_array.size()) {
return; //already indexed
}
HashMap<Vertex, int, VertexHasher> indices;
LocalVector<Vertex> old_vertex_array = vertex_array;
vertex_array.clear();
for (uint32_t i = 0; i < old_vertex_array.size(); i++) {
int *idxptr = indices.getptr(old_vertex_array[i]);
int idx;
if (!idxptr) {
idx = indices.size();
vertex_array.push_back(old_vertex_array[i]);
indices[old_vertex_array[i]] = idx;
} else {
idx = *idxptr;
}
index_array.push_back(idx);
}
format |= Mesh::ARRAY_FORMAT_INDEX;
}
void SurfaceTool::deindex() {
if (index_array.size() == 0) {
return; //nothing to deindex
}
LocalVector<Vertex> old_vertex_array = vertex_array;
vertex_array.clear();
for (uint32_t i = 0; i < index_array.size(); i++) {
uint32_t index = index_array[i];
ERR_FAIL_COND(index >= old_vertex_array.size());
vertex_array.push_back(old_vertex_array[index]);
}
format &= ~Mesh::ARRAY_FORMAT_INDEX;
index_array.clear();
}
void SurfaceTool::_create_list(const Ref<Mesh> &p_existing, int p_surface, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat) {
Array arr = p_existing->surface_get_arrays(p_surface);
ERR_FAIL_COND(arr.size() != RS::ARRAY_MAX);
_create_list_from_arrays(arr, r_vertex, r_index, lformat);
}
void SurfaceTool::create_vertex_array_from_triangle_arrays(const Array &p_arrays, LocalVector<SurfaceTool::Vertex> &ret, uint32_t *r_format) {
ret.clear();
Vector<Vector3> varr = p_arrays[RS::ARRAY_VERTEX];
Vector<Vector3> narr = p_arrays[RS::ARRAY_NORMAL];
Vector<float> tarr = p_arrays[RS::ARRAY_TANGENT];
Vector<Color> carr = p_arrays[RS::ARRAY_COLOR];
Vector<Vector2> uvarr = p_arrays[RS::ARRAY_TEX_UV];
Vector<Vector2> uv2arr = p_arrays[RS::ARRAY_TEX_UV2];
Vector<int> barr = p_arrays[RS::ARRAY_BONES];
Vector<float> warr = p_arrays[RS::ARRAY_WEIGHTS];
Vector<float> custom_float[RS::ARRAY_CUSTOM_COUNT];
int vc = varr.size();
if (vc == 0) {
if (r_format) {
*r_format = 0;
}
return;
}
int lformat = 0;
if (varr.size()) {
lformat |= RS::ARRAY_FORMAT_VERTEX;
}
if (narr.size()) {
lformat |= RS::ARRAY_FORMAT_NORMAL;
}
if (tarr.size()) {
lformat |= RS::ARRAY_FORMAT_TANGENT;
}
if (carr.size()) {
lformat |= RS::ARRAY_FORMAT_COLOR;
}
if (uvarr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV;
}
if (uv2arr.size()) {
lformat |= RS::ARRAY_FORMAT_TEX_UV2;
}
int wcount = 0;
if (barr.size() && warr.size()) {
lformat |= RS::ARRAY_FORMAT_BONES;
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
wcount = barr.size() / varr.size();
if (wcount == 8) {
lformat |= RS::ARRAY_FLAG_USE_8_BONE_WEIGHTS;
}
}
if (warr.size()) {
lformat |= RS::ARRAY_FORMAT_WEIGHTS;
}
static const uint32_t custom_mask[RS::ARRAY_CUSTOM_COUNT] = { Mesh::ARRAY_FORMAT_CUSTOM0, Mesh::ARRAY_FORMAT_CUSTOM1, Mesh::ARRAY_FORMAT_CUSTOM2, Mesh::ARRAY_FORMAT_CUSTOM3 };
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 };
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
ERR_CONTINUE_MSG(p_arrays[RS::ARRAY_CUSTOM0 + i].get_type() == Variant::PACKED_BYTE_ARRAY, "Extracting Byte/Half formats is not supported");
if (p_arrays[RS::ARRAY_CUSTOM0 + i].get_type() == Variant::PACKED_FLOAT32_ARRAY) {
lformat |= custom_mask[i];
custom_float[i] = p_arrays[RS::ARRAY_CUSTOM0 + i];
int fmt = custom_float[i].size() / varr.size();
if (fmt == 1) {
lformat |= CUSTOM_R_FLOAT << custom_shift[i];
} else if (fmt == 2) {
lformat |= CUSTOM_RG_FLOAT << custom_shift[i];
} else if (fmt == 3) {
lformat |= CUSTOM_RGB_FLOAT << custom_shift[i];
} else if (fmt == 4) {
lformat |= CUSTOM_RGBA_FLOAT << custom_shift[i];
}
}
}
for (int i = 0; i < vc; i++) {
Vertex v;
if (lformat & RS::ARRAY_FORMAT_VERTEX) {
v.vertex = varr[i];
}
if (lformat & RS::ARRAY_FORMAT_NORMAL) {
v.normal = narr[i];
}
if (lformat & RS::ARRAY_FORMAT_TANGENT) {
Plane p(tarr[i * 4 + 0], tarr[i * 4 + 1], tarr[i * 4 + 2], tarr[i * 4 + 3]);
v.tangent = p.normal;
v.binormal = p.normal.cross(v.tangent).normalized() * p.d;
}
if (lformat & RS::ARRAY_FORMAT_COLOR) {
v.color = carr[i];
}
if (lformat & RS::ARRAY_FORMAT_TEX_UV) {
v.uv = uvarr[i];
}
if (lformat & RS::ARRAY_FORMAT_TEX_UV2) {
v.uv2 = uv2arr[i];
}
if (lformat & RS::ARRAY_FORMAT_BONES) {
Vector<int> b;
b.resize(wcount);
for (int j = 0; j < wcount; j++) {
b.write[j] = barr[i * wcount + j];
}
v.bones = b;
}
if (lformat & RS::ARRAY_FORMAT_WEIGHTS) {
Vector<float> w;
w.resize(wcount);
for (int j = 0; j < wcount; j++) {
w.write[j] = warr[i * wcount + j];
}
v.weights = w;
}
for (int j = 0; j < RS::ARRAY_CUSTOM_COUNT; j++) {
if (lformat & custom_mask[j]) {
int cc = custom_float[j].size() / varr.size();
for (int k = 0; k < cc; k++) {
v.custom[j][k] = custom_float[j][i * cc + k];
}
}
}
ret.push_back(v);
}
if (r_format) {
*r_format = lformat;
}
}
void SurfaceTool::_create_list_from_arrays(Array arr, LocalVector<Vertex> *r_vertex, LocalVector<int> *r_index, uint32_t &lformat) {
create_vertex_array_from_triangle_arrays(arr, *r_vertex, &lformat);
ERR_FAIL_COND(r_vertex->size() == 0);
//indices
r_index->clear();
Vector<int> idx = arr[RS::ARRAY_INDEX];
int is = idx.size();
if (is) {
lformat |= RS::ARRAY_FORMAT_INDEX;
const int *iarr = idx.ptr();
for (int i = 0; i < is; i++) {
r_index->push_back(iarr[i]);
}
}
}
void SurfaceTool::create_from_triangle_arrays(const Array &p_arrays) {
clear();
primitive = Mesh::PRIMITIVE_TRIANGLES;
_create_list_from_arrays(p_arrays, &vertex_array, &index_array, format);
}
void SurfaceTool::create_from(const Ref<Mesh> &p_existing, int p_surface) {
clear();
primitive = p_existing->surface_get_primitive_type(p_surface);
_create_list(p_existing, p_surface, &vertex_array, &index_array, format);
material = p_existing->surface_get_material(p_surface);
}
void SurfaceTool::create_from_blend_shape(const Ref<Mesh> &p_existing, int p_surface, const String &p_blend_shape_name) {
clear();
primitive = p_existing->surface_get_primitive_type(p_surface);
Array arr = p_existing->surface_get_blend_shape_arrays(p_surface);
Array blend_shape_names;
int32_t shape_idx = -1;
for (int32_t i = 0; i < p_existing->get_blend_shape_count(); i++) {
String name = p_existing->get_blend_shape_name(i);
if (name == p_blend_shape_name) {
shape_idx = i;
break;
}
}
ERR_FAIL_COND(shape_idx == -1);
ERR_FAIL_COND(shape_idx >= arr.size());
Array mesh = arr[shape_idx];
ERR_FAIL_COND(mesh.size() != RS::ARRAY_MAX);
_create_list_from_arrays(arr[shape_idx], &vertex_array, &index_array, format);
}
void SurfaceTool::append_from(const Ref<Mesh> &p_existing, int p_surface, const Transform &p_xform) {
if (vertex_array.size() == 0) {
primitive = p_existing->surface_get_primitive_type(p_surface);
format = 0;
}
uint32_t nformat;
LocalVector<Vertex> nvertices;
LocalVector<int> nindices;
_create_list(p_existing, p_surface, &nvertices, &nindices, nformat);
format |= nformat;
int vfrom = vertex_array.size();
for (uint32_t vi = 0; vi < nvertices.size(); vi++) {
Vertex v = nvertices[vi];
v.vertex = p_xform.xform(v.vertex);
if (nformat & RS::ARRAY_FORMAT_NORMAL) {
v.normal = p_xform.basis.xform(v.normal);
}
if (nformat & RS::ARRAY_FORMAT_TANGENT) {
v.tangent = p_xform.basis.xform(v.tangent);
v.binormal = p_xform.basis.xform(v.binormal);
}
vertex_array.push_back(v);
}
for (uint32_t i = 0; i < nindices.size(); i++) {
int dst_index = nindices[i] + vfrom;
index_array.push_back(dst_index);
}
if (index_array.size() % 3) {
WARN_PRINT("SurfaceTool: Index array not a multiple of 3.");
}
}
//mikktspace callbacks
namespace {
struct TangentGenerationContextUserData {
LocalVector<SurfaceTool::Vertex> *vertices;
LocalVector<int> *indices;
};
} // namespace
int SurfaceTool::mikktGetNumFaces(const SMikkTSpaceContext *pContext) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
if (triangle_data.indices->size() > 0) {
return triangle_data.indices->size() / 3;
} else {
return triangle_data.vertices->size() / 3;
}
}
int SurfaceTool::mikktGetNumVerticesOfFace(const SMikkTSpaceContext *pContext, const int iFace) {
return 3; //always 3
}
void SurfaceTool::mikktGetPosition(const SMikkTSpaceContext *pContext, float fvPosOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector3 v;
if (triangle_data.indices->size() > 0) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).vertex;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).vertex;
}
fvPosOut[0] = v.x;
fvPosOut[1] = v.y;
fvPosOut[2] = v.z;
}
void SurfaceTool::mikktGetNormal(const SMikkTSpaceContext *pContext, float fvNormOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector3 v;
if (triangle_data.indices->size() > 0) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).normal;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).normal;
}
fvNormOut[0] = v.x;
fvNormOut[1] = v.y;
fvNormOut[2] = v.z;
}
void SurfaceTool::mikktGetTexCoord(const SMikkTSpaceContext *pContext, float fvTexcOut[], const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vector2 v;
if (triangle_data.indices->size() > 0) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
v = triangle_data.vertices->operator[](index).uv;
}
} else {
v = triangle_data.vertices->operator[](iFace * 3 + iVert).uv;
}
fvTexcOut[0] = v.x;
fvTexcOut[1] = v.y;
}
void SurfaceTool::mikktSetTSpaceDefault(const SMikkTSpaceContext *pContext, const float fvTangent[], const float fvBiTangent[], const float fMagS, const float fMagT,
const tbool bIsOrientationPreserving, const int iFace, const int iVert) {
TangentGenerationContextUserData &triangle_data = *reinterpret_cast<TangentGenerationContextUserData *>(pContext->m_pUserData);
Vertex *vtx = nullptr;
if (triangle_data.indices->size() > 0) {
uint32_t index = triangle_data.indices->operator[](iFace * 3 + iVert);
if (index < triangle_data.vertices->size()) {
vtx = &triangle_data.vertices->operator[](index);
}
} else {
vtx = &triangle_data.vertices->operator[](iFace * 3 + iVert);
}
if (vtx != nullptr) {
vtx->tangent = Vector3(fvTangent[0], fvTangent[1], fvTangent[2]);
vtx->binormal = Vector3(-fvBiTangent[0], -fvBiTangent[1], -fvBiTangent[2]); // for some reason these are reversed, something with the coordinate system in Godot
}
}
void SurfaceTool::generate_tangents() {
ERR_FAIL_COND(!(format & Mesh::ARRAY_FORMAT_TEX_UV));
ERR_FAIL_COND(!(format & Mesh::ARRAY_FORMAT_NORMAL));
SMikkTSpaceInterface mkif;
mkif.m_getNormal = mikktGetNormal;
mkif.m_getNumFaces = mikktGetNumFaces;
mkif.m_getNumVerticesOfFace = mikktGetNumVerticesOfFace;
mkif.m_getPosition = mikktGetPosition;
mkif.m_getTexCoord = mikktGetTexCoord;
mkif.m_setTSpace = mikktSetTSpaceDefault;
mkif.m_setTSpaceBasic = nullptr;
SMikkTSpaceContext msc;
msc.m_pInterface = &mkif;
TangentGenerationContextUserData triangle_data;
triangle_data.vertices = &vertex_array;
for (uint32_t i = 0; i < vertex_array.size(); i++) {
vertex_array[i].binormal = Vector3();
vertex_array[i].tangent = Vector3();
}
triangle_data.indices = &index_array;
msc.m_pUserData = &triangle_data;
bool res = genTangSpaceDefault(&msc);
ERR_FAIL_COND(!res);
format |= Mesh::ARRAY_FORMAT_TANGENT;
}
void SurfaceTool::generate_normals(bool p_flip) {
ERR_FAIL_COND(primitive != Mesh::PRIMITIVE_TRIANGLES);
bool was_indexed = index_array.size();
deindex();
ERR_FAIL_COND((vertex_array.size() % 3) != 0);
HashMap<Vertex, Vector3, VertexHasher> vertex_hash;
for (uint32_t vi = 0; vi < vertex_array.size(); vi += 3) {
Vertex *v = &vertex_array[vi];
Vector3 normal;
if (!p_flip) {
normal = Plane(v[0].vertex, v[1].vertex, v[2].vertex).normal;
} else {
normal = Plane(v[2].vertex, v[1].vertex, v[0].vertex).normal;
}
for (int i = 0; i < 3; i++) {
Vector3 *lv = vertex_hash.getptr(v[i]);
if (!lv) {
vertex_hash.set(v[i], normal);
} else {
(*lv) += normal;
}
}
}
for (uint32_t vi = 0; vi < vertex_array.size(); vi++) {
Vector3 *lv = vertex_hash.getptr(vertex_array[vi]);
if (!lv) {
vertex_array[vi].normal = Vector3();
} else {
vertex_array[vi].normal = lv->normalized();
}
}
format |= Mesh::ARRAY_FORMAT_NORMAL;
if (was_indexed) {
index();
}
}
void SurfaceTool::set_material(const Ref<Material> &p_material) {
material = p_material;
}
void SurfaceTool::clear() {
begun = false;
primitive = Mesh::PRIMITIVE_LINES;
format = 0;
last_bones.clear();
last_weights.clear();
index_array.clear();
vertex_array.clear();
material.unref();
last_smooth_group = 0;
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
last_custom_format[i] = CUSTOM_MAX;
}
skin_weights = SKIN_4_WEIGHTS;
}
void SurfaceTool::set_skin_weight_count(SkinWeightCount p_weights) {
ERR_FAIL_COND(begun);
skin_weights = p_weights;
}
SurfaceTool::SkinWeightCount SurfaceTool::get_skin_weight_count() const {
return skin_weights;
}
void SurfaceTool::set_custom_format(int p_index, CustomFormat p_format) {
ERR_FAIL_INDEX(p_index, RS::ARRAY_CUSTOM_COUNT);
ERR_FAIL_COND(begun);
last_custom_format[p_index] = p_format;
}
SurfaceTool::CustomFormat SurfaceTool::get_custom_format(int p_index) const {
ERR_FAIL_INDEX_V(p_index, RS::ARRAY_CUSTOM_COUNT, CUSTOM_MAX);
return last_custom_format[p_index];
}
void SurfaceTool::optimize_indices_for_cache() {
ERR_FAIL_COND(optimize_vertex_cache_func == nullptr);
ERR_FAIL_COND(index_array.size() == 0);
LocalVector old_index_array = index_array;
zeromem(index_array.ptr(), index_array.size() * sizeof(int));
optimize_vertex_cache_func((unsigned int *)index_array.ptr(), (unsigned int *)old_index_array.ptr(), old_index_array.size(), vertex_array.size());
}
float SurfaceTool::get_max_axis_length() const {
ERR_FAIL_COND_V(vertex_array.size() == 0, 0);
AABB aabb;
for (uint32_t i = 0; i < vertex_array.size(); i++) {
if (i == 0) {
aabb.position = vertex_array[i].vertex;
} else {
aabb.expand_to(vertex_array[i].vertex);
}
}
return aabb.get_longest_axis_size();
}
Vector<int> SurfaceTool::generate_lod(float p_threshold, int p_target_index_count) {
Vector<int> lod;
ERR_FAIL_COND_V(simplify_func == nullptr, lod);
ERR_FAIL_COND_V(vertex_array.size() == 0, lod);
ERR_FAIL_COND_V(index_array.size() == 0, lod);
lod.resize(index_array.size());
LocalVector<float> vertices; //uses floats
vertices.resize(vertex_array.size() * 3);
for (uint32_t i = 0; i < vertex_array.size(); i++) {
vertices[i * 3 + 0] = vertex_array[i].vertex.x;
vertices[i * 3 + 1] = vertex_array[i].vertex.y;
vertices[i * 3 + 2] = vertex_array[i].vertex.z;
}
uint32_t index_count = simplify_func((unsigned int *)lod.ptrw(), (unsigned int *)index_array.ptr(), index_array.size(), vertices.ptr(), vertex_array.size(), sizeof(float) * 3, p_target_index_count, p_threshold);
ERR_FAIL_COND_V(index_count == 0, lod);
lod.resize(index_count);
return lod;
}
void SurfaceTool::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_skin_weight_count", "count"), &SurfaceTool::set_skin_weight_count);
ClassDB::bind_method(D_METHOD("get_skin_weight_count"), &SurfaceTool::get_skin_weight_count);
ClassDB::bind_method(D_METHOD("set_custom_format", "index", "format"), &SurfaceTool::set_custom_format);
ClassDB::bind_method(D_METHOD("get_custom_format", "index"), &SurfaceTool::get_custom_format);
ClassDB::bind_method(D_METHOD("begin", "primitive"), &SurfaceTool::begin);
ClassDB::bind_method(D_METHOD("add_vertex", "vertex"), &SurfaceTool::add_vertex);
ClassDB::bind_method(D_METHOD("set_color", "color"), &SurfaceTool::set_color);
ClassDB::bind_method(D_METHOD("set_normal", "normal"), &SurfaceTool::set_normal);
ClassDB::bind_method(D_METHOD("set_tangent", "tangent"), &SurfaceTool::set_tangent);
ClassDB::bind_method(D_METHOD("set_uv", "uv"), &SurfaceTool::set_uv);
ClassDB::bind_method(D_METHOD("set_uv2", "uv2"), &SurfaceTool::set_uv2);
ClassDB::bind_method(D_METHOD("set_bones", "bones"), &SurfaceTool::set_bones);
ClassDB::bind_method(D_METHOD("set_weights", "weights"), &SurfaceTool::set_weights);
ClassDB::bind_method(D_METHOD("set_custom", "index", "custom"), &SurfaceTool::set_custom);
ClassDB::bind_method(D_METHOD("set_smooth_group", "index"), &SurfaceTool::set_smooth_group);
ClassDB::bind_method(D_METHOD("add_triangle_fan", "vertices", "uvs", "colors", "uv2s", "normals", "tangents"), &SurfaceTool::add_triangle_fan, DEFVAL(Vector<Vector2>()), DEFVAL(Vector<Color>()), DEFVAL(Vector<Vector2>()), DEFVAL(Vector<Vector3>()), DEFVAL(Vector<Plane>()));
ClassDB::bind_method(D_METHOD("add_index", "index"), &SurfaceTool::add_index);
ClassDB::bind_method(D_METHOD("index"), &SurfaceTool::index);
ClassDB::bind_method(D_METHOD("deindex"), &SurfaceTool::deindex);
ClassDB::bind_method(D_METHOD("generate_normals", "flip"), &SurfaceTool::generate_normals, DEFVAL(false));
ClassDB::bind_method(D_METHOD("generate_tangents"), &SurfaceTool::generate_tangents);
ClassDB::bind_method(D_METHOD("optimize_indices_for_cache"), &SurfaceTool::optimize_indices_for_cache);
ClassDB::bind_method(D_METHOD("get_max_axis_length"), &SurfaceTool::get_max_axis_length);
ClassDB::bind_method(D_METHOD("generate_lod", "nd_threshold", "target_index_count"), &SurfaceTool::generate_lod, DEFVAL(3));
ClassDB::bind_method(D_METHOD("set_material", "material"), &SurfaceTool::set_material);
ClassDB::bind_method(D_METHOD("clear"), &SurfaceTool::clear);
ClassDB::bind_method(D_METHOD("create_from", "existing", "surface"), &SurfaceTool::create_from);
ClassDB::bind_method(D_METHOD("create_from_blend_shape", "existing", "surface", "blend_shape"), &SurfaceTool::create_from_blend_shape);
ClassDB::bind_method(D_METHOD("append_from", "existing", "surface", "transform"), &SurfaceTool::append_from);
ClassDB::bind_method(D_METHOD("commit", "existing", "flags"), &SurfaceTool::commit, DEFVAL(Variant()), DEFVAL(0));
ClassDB::bind_method(D_METHOD("commit_to_arrays"), &SurfaceTool::commit_to_arrays);
BIND_ENUM_CONSTANT(CUSTOM_RGBA8_UNORM);
BIND_ENUM_CONSTANT(CUSTOM_RGBA8_SNORM);
BIND_ENUM_CONSTANT(CUSTOM_RG_HALF);
BIND_ENUM_CONSTANT(CUSTOM_RGBA_HALF);
BIND_ENUM_CONSTANT(CUSTOM_R_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RG_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RGB_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_RGBA_FLOAT);
BIND_ENUM_CONSTANT(CUSTOM_MAX);
BIND_ENUM_CONSTANT(SKIN_4_WEIGHTS);
BIND_ENUM_CONSTANT(SKIN_8_WEIGHTS);
}
SurfaceTool::SurfaceTool() {
first = false;
begun = false;
for (int i = 0; i < RS::ARRAY_CUSTOM_COUNT; i++) {
last_custom_format[i] = CUSTOM_MAX;
}
primitive = Mesh::PRIMITIVE_LINES;
skin_weights = SKIN_4_WEIGHTS;
format = 0;
}
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