mirror of
https://github.com/godotengine/godot
synced 2024-09-16 00:48:15 +00:00
d95794ec8a
As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
238 lines
8.8 KiB
C++
238 lines
8.8 KiB
C++
/**************************************************************************/
|
|
/* register_types.cpp */
|
|
/**************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/**************************************************************************/
|
|
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
|
|
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/**************************************************************************/
|
|
|
|
#include "register_types.h"
|
|
#include "core/crypto/crypto_core.h"
|
|
#include "thirdparty/xatlas/xatlas.h"
|
|
|
|
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);
|
|
|
|
bool xatlas_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) {
|
|
CryptoCore::MD5Context ctx;
|
|
ctx.start();
|
|
|
|
ctx.update((unsigned char *)&p_texel_size, sizeof(float));
|
|
ctx.update((unsigned char *)p_indices, sizeof(int) * p_index_count);
|
|
ctx.update((unsigned char *)p_vertices, sizeof(float) * p_vertex_count * 3);
|
|
ctx.update((unsigned char *)p_normals, sizeof(float) * p_vertex_count * 3);
|
|
|
|
unsigned char hash[16];
|
|
ctx.finish(hash);
|
|
|
|
bool cached = false;
|
|
unsigned int cache_idx = 0;
|
|
|
|
*r_mesh_cache = nullptr;
|
|
*r_mesh_cache_size = 0;
|
|
|
|
if (p_cache_data) {
|
|
//Check if hash is in cache data
|
|
int *cache_data = (int *)p_cache_data;
|
|
int n_entries = cache_data[0];
|
|
unsigned int read_idx = 1;
|
|
for (int i = 0; i < n_entries; ++i) {
|
|
if (memcmp(&cache_data[read_idx], hash, 16) == 0) {
|
|
cached = true;
|
|
cache_idx = read_idx;
|
|
break;
|
|
}
|
|
|
|
read_idx += 4; // hash
|
|
read_idx += 2; // size hint
|
|
|
|
int vertex_count = cache_data[read_idx];
|
|
read_idx += 1; // vertex count
|
|
read_idx += vertex_count; // vertex
|
|
read_idx += vertex_count * 2; // uvs
|
|
|
|
int index_count = cache_data[read_idx];
|
|
read_idx += 1; // index count
|
|
read_idx += index_count; // indices
|
|
}
|
|
}
|
|
|
|
if (cached) {
|
|
int *cache_data = (int *)p_cache_data;
|
|
|
|
cache_idx += 4;
|
|
|
|
// Load size
|
|
*r_size_hint_x = cache_data[cache_idx];
|
|
*r_size_hint_y = cache_data[cache_idx + 1];
|
|
cache_idx += 2;
|
|
|
|
// Load vertices
|
|
*r_vertex_count = cache_data[cache_idx];
|
|
cache_idx++;
|
|
*r_vertex = &cache_data[cache_idx];
|
|
cache_idx += *r_vertex_count;
|
|
|
|
// Load UVs
|
|
*r_uv = (float *)&cache_data[cache_idx];
|
|
cache_idx += *r_vertex_count * 2;
|
|
|
|
// Load indices
|
|
*r_index_count = cache_data[cache_idx];
|
|
cache_idx++;
|
|
*r_index = &cache_data[cache_idx];
|
|
} else {
|
|
// set up input mesh
|
|
xatlas::MeshDecl input_mesh;
|
|
input_mesh.indexData = p_indices;
|
|
input_mesh.indexCount = p_index_count;
|
|
input_mesh.indexFormat = xatlas::IndexFormat::UInt32;
|
|
|
|
input_mesh.vertexCount = p_vertex_count;
|
|
input_mesh.vertexPositionData = p_vertices;
|
|
input_mesh.vertexPositionStride = sizeof(float) * 3;
|
|
input_mesh.vertexNormalData = p_normals;
|
|
input_mesh.vertexNormalStride = sizeof(uint32_t) * 3;
|
|
input_mesh.vertexUvData = nullptr;
|
|
input_mesh.vertexUvStride = 0;
|
|
|
|
xatlas::ChartOptions chart_options;
|
|
chart_options.fixWinding = true;
|
|
|
|
ERR_FAIL_COND_V_MSG(p_texel_size <= 0.0f, false, "Texel size must be greater than 0.");
|
|
|
|
xatlas::PackOptions pack_options;
|
|
pack_options.padding = 1;
|
|
pack_options.maxChartSize = 4094; // Lightmap atlassing needs 2 for padding between meshes, so 4096-2
|
|
pack_options.blockAlign = true;
|
|
pack_options.texelsPerUnit = 1.0 / p_texel_size;
|
|
|
|
xatlas::Atlas *atlas = xatlas::Create();
|
|
|
|
xatlas::AddMeshError err = xatlas::AddMesh(atlas, input_mesh, 1);
|
|
ERR_FAIL_COND_V_MSG(err != xatlas::AddMeshError::Success, false, xatlas::StringForEnum(err));
|
|
|
|
xatlas::Generate(atlas, chart_options, pack_options);
|
|
|
|
*r_size_hint_x = atlas->width;
|
|
*r_size_hint_y = atlas->height;
|
|
|
|
float w = *r_size_hint_x;
|
|
float h = *r_size_hint_y;
|
|
|
|
if (w == 0 || h == 0) {
|
|
xatlas::Destroy(atlas);
|
|
return false; //could not bake because there is no area
|
|
}
|
|
|
|
const xatlas::Mesh &output = atlas->meshes[0];
|
|
|
|
*r_vertex = (int *)memalloc(sizeof(int) * output.vertexCount);
|
|
ERR_FAIL_NULL_V_MSG(*r_vertex, false, "Out of memory.");
|
|
*r_uv = (float *)memalloc(sizeof(float) * output.vertexCount * 2);
|
|
ERR_FAIL_NULL_V_MSG(*r_uv, false, "Out of memory.");
|
|
*r_index = (int *)memalloc(sizeof(int) * output.indexCount);
|
|
ERR_FAIL_NULL_V_MSG(*r_index, false, "Out of memory.");
|
|
|
|
float max_x = 0;
|
|
float max_y = 0;
|
|
for (uint32_t i = 0; i < output.vertexCount; i++) {
|
|
(*r_vertex)[i] = output.vertexArray[i].xref;
|
|
(*r_uv)[i * 2 + 0] = output.vertexArray[i].uv[0] / w;
|
|
(*r_uv)[i * 2 + 1] = output.vertexArray[i].uv[1] / h;
|
|
max_x = MAX(max_x, output.vertexArray[i].uv[0]);
|
|
max_y = MAX(max_y, output.vertexArray[i].uv[1]);
|
|
}
|
|
|
|
*r_vertex_count = output.vertexCount;
|
|
|
|
for (uint32_t i = 0; i < output.indexCount; i++) {
|
|
(*r_index)[i] = output.indexArray[i];
|
|
}
|
|
|
|
*r_index_count = output.indexCount;
|
|
|
|
xatlas::Destroy(atlas);
|
|
}
|
|
|
|
if (*r_use_cache) {
|
|
// Build cache data for current mesh
|
|
|
|
unsigned int new_cache_size = 4 + 2 + 1 + *r_vertex_count + (*r_vertex_count * 2) + 1 + *r_index_count; // hash + size hint + vertex_count + vertices + uvs + index_count + indices
|
|
new_cache_size *= sizeof(int);
|
|
int *new_cache_data = (int *)memalloc(new_cache_size);
|
|
unsigned int new_cache_idx = 0;
|
|
|
|
// hash
|
|
memcpy(&new_cache_data[new_cache_idx], hash, 16);
|
|
new_cache_idx += 4;
|
|
|
|
// size hint
|
|
new_cache_data[new_cache_idx] = *r_size_hint_x;
|
|
new_cache_data[new_cache_idx + 1] = *r_size_hint_y;
|
|
new_cache_idx += 2;
|
|
|
|
// vertex count
|
|
new_cache_data[new_cache_idx] = *r_vertex_count;
|
|
new_cache_idx++;
|
|
|
|
// vertices
|
|
memcpy(&new_cache_data[new_cache_idx], *r_vertex, sizeof(int) * (*r_vertex_count));
|
|
new_cache_idx += *r_vertex_count;
|
|
|
|
// uvs
|
|
memcpy(&new_cache_data[new_cache_idx], *r_uv, sizeof(float) * (*r_vertex_count) * 2);
|
|
new_cache_idx += *r_vertex_count * 2;
|
|
|
|
// index count
|
|
new_cache_data[new_cache_idx] = *r_index_count;
|
|
new_cache_idx++;
|
|
|
|
// indices
|
|
memcpy(&new_cache_data[new_cache_idx], *r_index, sizeof(int) * (*r_index_count));
|
|
|
|
// Return cache data to the caller
|
|
*r_mesh_cache = (uint8_t *)new_cache_data;
|
|
*r_mesh_cache_size = new_cache_size;
|
|
}
|
|
|
|
*r_use_cache = cached; // Return whether cache was used.
|
|
|
|
return true;
|
|
}
|
|
|
|
void initialize_xatlas_unwrap_module(ModuleInitializationLevel p_level) {
|
|
if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
|
|
return;
|
|
}
|
|
|
|
array_mesh_lightmap_unwrap_callback = xatlas_mesh_lightmap_unwrap_callback;
|
|
}
|
|
|
|
void uninitialize_xatlas_unwrap_module(ModuleInitializationLevel p_level) {
|
|
if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
|
|
return;
|
|
}
|
|
}
|