Merge pull request #38121 from JFonS/add_unwrap_caching
Add caching the lightmap unwrapping on import
This commit is contained in:
Rémi Verschelde
GitHub
commit
717f053e37
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@ -1429,11 +1429,30 @@ Error ResourceImporterScene::import(const String &p_source_file, const String &p
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Map<Ref<ArrayMesh>, Transform> meshes;
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_find_meshes(scene, meshes);
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if (light_bake_mode == 2) {
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String file_id = src_path.get_file();
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String cache_file_path = base_path.plus_file(file_id + ".unwrap_cache");
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Vector<unsigned char> cache_data;
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if (FileAccess::exists(cache_file_path)) {
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Error err2;
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FileAccess *file = FileAccess::open(cache_file_path, FileAccess::READ, &err2);
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if (err2) {
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if (file)
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memdelete(file);
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} else {
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int cache_size = file->get_len();
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cache_data.resize(cache_size);
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file->get_buffer(cache_data.ptrw(), cache_size);
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}
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}
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float texel_size = p_options["meshes/lightmap_texel_size"];
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texel_size = MAX(0.001, texel_size);
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Map<String, unsigned int> used_unwraps;
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EditorProgress progress2("gen_lightmaps", TTR("Generating Lightmaps"), meshes.size());
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int step = 0;
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for (Map<Ref<ArrayMesh>, Transform>::Element *E = meshes.front(); E; E = E->next()) {
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@ -1446,12 +1465,74 @@ Error ResourceImporterScene::import(const String &p_source_file, const String &p
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progress2.step(TTR("Generating for Mesh: ") + name + " (" + itos(step) + "/" + itos(meshes.size()) + ")", step);
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Error err2 = mesh->lightmap_unwrap(E->get(), texel_size);
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int *ret_cache_data = (int *)cache_data.ptrw();
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unsigned int ret_cache_size = cache_data.size();
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bool ret_used_cache = true; // Tell the unwrapper to use the cache
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Error err2 = mesh->lightmap_unwrap_cached(ret_cache_data, ret_cache_size, ret_used_cache, E->get(), texel_size);
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if (err2 != OK) {
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EditorNode::add_io_error("Mesh '" + name + "' failed lightmap generation. Please fix geometry.");
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} else {
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String hash = String::md5((unsigned char *)ret_cache_data);
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used_unwraps.insert(hash, ret_cache_size);
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if (!ret_used_cache) {
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// Cache was not used, add the generated entry to the current cache
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if (cache_data.empty()) {
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cache_data.resize(4 + ret_cache_size);
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int *data = (int *)cache_data.ptrw();
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data[0] = 1;
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memcpy(&data[1], ret_cache_data, ret_cache_size);
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} else {
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int current_size = cache_data.size();
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cache_data.resize(cache_data.size() + ret_cache_size);
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unsigned char *ptrw = cache_data.ptrw();
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memcpy(&ptrw[current_size], ret_cache_data, ret_cache_size);
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int *data = (int *)ptrw;
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data[0] += 1;
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}
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}
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}
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step++;
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}
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Error err2;
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FileAccess *file = FileAccess::open(cache_file_path, FileAccess::WRITE, &err2);
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if (err2) {
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if (file)
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memdelete(file);
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} else {
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// Store number of entries
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file->store_32(used_unwraps.size());
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// Store cache entries
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const int *cache = (int *)cache_data.ptr();
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unsigned int r_idx = 1;
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for (int i = 0; i < cache[0]; ++i) {
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unsigned char *entry_start = (unsigned char *)&cache[r_idx];
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String entry_hash = String::md5(entry_start);
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if (used_unwraps.has(entry_hash)) {
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unsigned int entry_size = used_unwraps[entry_hash];
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file->store_buffer(entry_start, entry_size);
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}
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r_idx += 4; // hash
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r_idx += 2; // size hint
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int vertex_count = cache[r_idx];
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r_idx += 1; // vertex count
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r_idx += vertex_count; // vertex
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r_idx += vertex_count * 2; // uvs
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int index_count = cache[r_idx];
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r_idx += 1; // index count
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r_idx += index_count; // indices
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}
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file->close();
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}
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}
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@ -32,14 +32,91 @@
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#include "core/error_macros.h"
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#include "core/crypto/crypto_core.h"
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#include "thirdparty/xatlas/xatlas.h"
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#include <stdio.h>
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#include <stdlib.h>
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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, const int *p_face_materials, int p_index_count, 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);
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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, 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, int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache);
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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, const int *p_face_materials, int p_index_count, 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) {
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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, float **r_uvs, int **r_vertices, int *r_vertex_count, int **r_indices, int *r_index_count, int *r_size_hint_x, int *r_size_hint_y, int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache) {
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CryptoCore::MD5Context ctx;
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ctx.start();
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ctx.update((unsigned char *)&p_texel_size, sizeof(float));
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ctx.update((unsigned char *)p_indices, sizeof(int) * p_index_count);
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ctx.update((unsigned char *)p_vertices, sizeof(float) * p_vertex_count);
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ctx.update((unsigned char *)p_normals, sizeof(float) * p_vertex_count);
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unsigned char hash[16];
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ctx.finish(hash);
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bool cached = false;
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unsigned int cache_idx = 0;
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if (r_used_cache && r_cache_size) {
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//Check if hash is in cache data
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int *cache_data = r_cache_data;
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int n_entries = cache_data[0];
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unsigned int r_idx = 1;
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for (int i = 0; i < n_entries; ++i) {
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if (memcmp(&cache_data[r_idx], hash, 16) == 0) {
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cached = true;
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cache_idx = r_idx;
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break;
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}
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r_idx += 4; // hash
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r_idx += 2; // size hint
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int vertex_count = cache_data[r_idx];
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r_idx += 1; // vertex count
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r_idx += vertex_count; // vertex
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r_idx += vertex_count * 2; // uvs
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int index_count = cache_data[r_idx];
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r_idx += 1; // index count
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r_idx += index_count; // indices
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}
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}
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if (r_used_cache && cached) {
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int *cache_data = r_cache_data;
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// Return cache data pointer to the caller
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r_cache_data = &cache_data[cache_idx];
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cache_idx += 4;
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// Load size
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*r_size_hint_x = cache_data[cache_idx];
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*r_size_hint_y = cache_data[cache_idx + 1];
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cache_idx += 2;
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// Load vertices
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*r_vertex_count = cache_data[cache_idx];
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cache_idx++;
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*r_vertices = &cache_data[cache_idx];
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cache_idx += *r_vertex_count;
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// Load UVs
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*r_uvs = (float *)&cache_data[cache_idx];
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cache_idx += *r_vertex_count * 2;
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// Load indices
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*r_index_count = cache_data[cache_idx];
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cache_idx++;
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*r_indices = &cache_data[cache_idx];
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// Return cache data size to the caller
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r_cache_size = sizeof(int) * (4 + 2 + 1 + *r_vertex_count + (*r_vertex_count * 2) + 1 + *r_index_count); // hash + size hint + vertex_count + vertices + uvs + index_count + indices
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r_used_cache = true;
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return true;
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}
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//set up input mesh
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xatlas::MeshDecl input_mesh;
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@ -82,16 +159,16 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver
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const xatlas::Mesh &output = atlas->meshes[0];
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*r_vertex = (int *)malloc(sizeof(int) * output.vertexCount);
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*r_uv = (float *)malloc(sizeof(float) * output.vertexCount * 2);
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*r_index = (int *)malloc(sizeof(int) * output.indexCount);
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*r_vertices = (int *)malloc(sizeof(int) * output.vertexCount);
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*r_uvs = (float *)malloc(sizeof(float) * output.vertexCount * 2);
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*r_indices = (int *)malloc(sizeof(int) * output.indexCount);
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float max_x = 0;
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float max_y = 0;
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for (uint32_t i = 0; i < output.vertexCount; i++) {
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(*r_vertex)[i] = output.vertexArray[i].xref;
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(*r_uv)[i * 2 + 0] = output.vertexArray[i].uv[0] / w;
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(*r_uv)[i * 2 + 1] = output.vertexArray[i].uv[1] / h;
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(*r_vertices)[i] = output.vertexArray[i].xref;
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(*r_uvs)[i * 2 + 0] = output.vertexArray[i].uv[0] / w;
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(*r_uvs)[i * 2 + 1] = output.vertexArray[i].uv[1] / h;
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max_x = MAX(max_x, output.vertexArray[i].uv[0]);
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max_y = MAX(max_y, output.vertexArray[i].uv[1]);
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}
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@ -100,13 +177,54 @@ bool xatlas_mesh_lightmap_unwrap_callback(float p_texel_size, const float *p_ver
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*r_vertex_count = output.vertexCount;
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for (uint32_t i = 0; i < output.indexCount; i++) {
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(*r_index)[i] = output.indexArray[i];
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(*r_indices)[i] = output.indexArray[i];
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}
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*r_index_count = output.indexCount;
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xatlas::Destroy(atlas);
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printf("Done\n");
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if (r_used_cache) {
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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
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new_cache_size *= sizeof(int);
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int *new_cache_data = (int *)memalloc(new_cache_size);
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unsigned int new_cache_idx = 0;
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// hash
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memcpy(&new_cache_data[new_cache_idx], hash, 16);
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new_cache_idx += 4;
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// size hint
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new_cache_data[new_cache_idx] = *r_size_hint_x;
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new_cache_data[new_cache_idx + 1] = *r_size_hint_y;
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new_cache_idx += 2;
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// vertex count
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new_cache_data[new_cache_idx] = *r_vertex_count;
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new_cache_idx++;
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// vertices
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memcpy(&new_cache_data[new_cache_idx], *r_vertices, sizeof(int) * *r_vertex_count);
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new_cache_idx += *r_vertex_count;
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// uvs
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memcpy(&new_cache_data[new_cache_idx], *r_uvs, sizeof(float) * *r_vertex_count * 2);
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new_cache_idx += *r_vertex_count * 2;
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// index count
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new_cache_data[new_cache_idx] = *r_index_count;
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new_cache_idx++;
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// indices
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memcpy(&new_cache_data[new_cache_idx], *r_indices, sizeof(int) * *r_index_count);
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new_cache_idx += *r_index_count;
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// Return cache data to the caller
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r_cache_data = new_cache_data;
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r_cache_size = new_cache_size;
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r_used_cache = false;
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}
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return true;
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}
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@ -1359,7 +1359,7 @@ void ArrayMesh::regen_normalmaps() {
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}
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//dirty hack
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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, const int *p_face_materials, int p_index_count, 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) = nullptr;
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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, 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, int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache);
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struct ArrayMeshLightmapSurface {
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@ -1370,6 +1370,13 @@ struct ArrayMeshLightmapSurface {
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};
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Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texel_size) {
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int *cache_data = nullptr;
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unsigned int cache_size = 0;
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bool use_cache = false; // Don't use cache
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return lightmap_unwrap_cached(cache_data, cache_size, use_cache, p_base_transform, p_texel_size);
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}
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Error ArrayMesh::lightmap_unwrap_cached(int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache, const Transform &p_base_transform, float p_texel_size) {
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ERR_FAIL_COND_V(!array_mesh_lightmap_unwrap_callback, ERR_UNCONFIGURED);
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ERR_FAIL_COND_V_MSG(blend_shapes.size() != 0, ERR_UNAVAILABLE, "Can't unwrap mesh with blend shapes.");
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@ -1377,11 +1384,18 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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Vector<float> vertices;
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Vector<float> normals;
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Vector<int> indices;
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Vector<int> face_materials;
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Vector<float> uv;
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Vector<Pair<int, int>> uv_index;
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Vector<Pair<int, int>> uv_indices;
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Vector<ArrayMeshLightmapSurface> lightmap_surfaces;
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// Keep only the scale
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Transform transform = p_base_transform;
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transform.origin = Vector3();
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transform.looking_at(Vector3(1, 0, 0), Vector3(0, 1, 0));
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Basis normal_basis = transform.basis.inverse().transposed();
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Vector<ArrayMeshLightmapSurface> surfaces;
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for (int i = 0; i < get_surface_count(); i++) {
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ArrayMeshLightmapSurface s;
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s.primitive = surface_get_primitive_type(i);
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@ -1405,12 +1419,12 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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vertices.resize((vertex_ofs + vc) * 3);
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normals.resize((vertex_ofs + vc) * 3);
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uv_index.resize(vertex_ofs + vc);
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uv_indices.resize(vertex_ofs + vc);
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for (int j = 0; j < vc; j++) {
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Vector3 v = p_base_transform.xform(r[j]);
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Vector3 n = p_base_transform.basis.xform(rn[j]).normalized();
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Vector3 v = transform.xform(r[j]);
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Vector3 n = normal_basis.xform(rn[j]).normalized();
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vertices.write[(j + vertex_ofs) * 3 + 0] = v.x;
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vertices.write[(j + vertex_ofs) * 3 + 1] = v.y;
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@ -1418,7 +1432,7 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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normals.write[(j + vertex_ofs) * 3 + 0] = n.x;
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normals.write[(j + vertex_ofs) * 3 + 1] = n.y;
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normals.write[(j + vertex_ofs) * 3 + 2] = n.z;
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uv_index.write[j + vertex_ofs] = Pair<int, int>(i, j);
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uv_indices.write[j + vertex_ofs] = Pair<int, int>(i, j);
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}
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Vector<int> rindices = arrays[Mesh::ARRAY_INDEX];
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@ -1433,7 +1447,6 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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indices.push_back(vertex_ofs + j * 3 + 0);
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indices.push_back(vertex_ofs + j * 3 + 1);
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indices.push_back(vertex_ofs + j * 3 + 2);
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face_materials.push_back(i);
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}
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} else {
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@ -1445,11 +1458,10 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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indices.push_back(vertex_ofs + ri[j * 3 + 0]);
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indices.push_back(vertex_ofs + ri[j * 3 + 1]);
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indices.push_back(vertex_ofs + ri[j * 3 + 2]);
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face_materials.push_back(i);
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}
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}
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surfaces.push_back(s);
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lightmap_surfaces.push_back(s);
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}
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//unwrap
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@ -1462,7 +1474,7 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
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int size_x;
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int size_y;
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bool ok = array_mesh_lightmap_unwrap_callback(p_texel_size, vertices.ptr(), normals.ptr(), vertices.size() / 3, indices.ptr(), face_materials.ptr(), indices.size(), &gen_uvs, &gen_vertices, &gen_vertex_count, &gen_indices, &gen_index_count, &size_x, &size_y);
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bool ok = array_mesh_lightmap_unwrap_callback(p_texel_size, vertices.ptr(), normals.ptr(), vertices.size() / 3, indices.ptr(), indices.size(), &gen_uvs, &gen_vertices, &gen_vertex_count, &gen_indices, &gen_index_count, &size_x, &size_y, r_cache_data, r_cache_size, r_used_cache);
|
||||
|
||||
if (!ok) {
|
||||
return ERR_CANT_CREATE;
|
||||
|
|
@ -1474,11 +1486,11 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
|
|||
//create surfacetools for each surface..
|
||||
Vector<Ref<SurfaceTool>> surfaces_tools;
|
||||
|
||||
for (int i = 0; i < surfaces.size(); i++) {
|
||||
for (int i = 0; i < lightmap_surfaces.size(); i++) {
|
||||
Ref<SurfaceTool> st;
|
||||
st.instance();
|
||||
st->begin(Mesh::PRIMITIVE_TRIANGLES);
|
||||
st->set_material(surfaces[i].material);
|
||||
st->set_material(lightmap_surfaces[i].material);
|
||||
surfaces_tools.push_back(st); //stay there
|
||||
}
|
||||
|
||||
|
|
@ -1486,37 +1498,37 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
|
|||
//go through all indices
|
||||
for (int i = 0; i < gen_index_count; i += 3) {
|
||||
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 0]], uv_index.size(), ERR_BUG);
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 1]], uv_index.size(), ERR_BUG);
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 2]], uv_index.size(), ERR_BUG);
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 0]], uv_indices.size(), ERR_BUG);
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 1]], uv_indices.size(), ERR_BUG);
|
||||
ERR_FAIL_INDEX_V(gen_vertices[gen_indices[i + 2]], uv_indices.size(), ERR_BUG);
|
||||
|
||||
ERR_FAIL_COND_V(uv_index[gen_vertices[gen_indices[i + 0]]].first != uv_index[gen_vertices[gen_indices[i + 1]]].first || uv_index[gen_vertices[gen_indices[i + 0]]].first != uv_index[gen_vertices[gen_indices[i + 2]]].first, 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_index[gen_vertices[gen_indices[i + 0]]].first;
|
||||
int surface = uv_indices[gen_vertices[gen_indices[i + 0]]].first;
|
||||
|
||||
for (int j = 0; j < 3; j++) {
|
||||
|
||||
SurfaceTool::Vertex v = surfaces[surface].vertices[uv_index[gen_vertices[gen_indices[i + j]]].second];
|
||||
SurfaceTool::Vertex v = lightmap_surfaces[surface].vertices[uv_indices[gen_vertices[gen_indices[i + j]]].second];
|
||||
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_COLOR) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_COLOR) {
|
||||
surfaces_tools.write[surface]->add_color(v.color);
|
||||
}
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_TEX_UV) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_TEX_UV) {
|
||||
surfaces_tools.write[surface]->add_uv(v.uv);
|
||||
}
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_NORMAL) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_NORMAL) {
|
||||
surfaces_tools.write[surface]->add_normal(v.normal);
|
||||
}
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_TANGENT) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_TANGENT) {
|
||||
Plane t;
|
||||
t.normal = v.tangent;
|
||||
t.d = v.binormal.dot(v.normal.cross(v.tangent)) < 0 ? -1 : 1;
|
||||
surfaces_tools.write[surface]->add_tangent(t);
|
||||
}
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_BONES) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_BONES) {
|
||||
surfaces_tools.write[surface]->add_bones(v.bones);
|
||||
}
|
||||
if (surfaces[surface].format & ARRAY_FORMAT_WEIGHTS) {
|
||||
if (lightmap_surfaces[surface].format & ARRAY_FORMAT_WEIGHTS) {
|
||||
surfaces_tools.write[surface]->add_weights(v.weights);
|
||||
}
|
||||
|
||||
|
|
@ -1527,20 +1539,22 @@ Error ArrayMesh::lightmap_unwrap(const Transform &p_base_transform, float p_texe
|
|||
}
|
||||
}
|
||||
|
||||
//free stuff
|
||||
::free(gen_vertices);
|
||||
::free(gen_indices);
|
||||
::free(gen_uvs);
|
||||
|
||||
//generate surfaces
|
||||
|
||||
for (int i = 0; i < surfaces_tools.size(); i++) {
|
||||
surfaces_tools.write[i]->index();
|
||||
surfaces_tools.write[i]->commit(Ref<ArrayMesh>((ArrayMesh *)this), surfaces[i].format);
|
||||
surfaces_tools.write[i]->commit(Ref<ArrayMesh>((ArrayMesh *)this), lightmap_surfaces[i].format);
|
||||
}
|
||||
|
||||
set_lightmap_size_hint(Size2(size_x, size_y));
|
||||
|
||||
if (!r_used_cache) {
|
||||
//free stuff
|
||||
::free(gen_vertices);
|
||||
::free(gen_indices);
|
||||
::free(gen_uvs);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -238,6 +238,7 @@ public:
|
|||
void regen_normalmaps();
|
||||
|
||||
Error lightmap_unwrap(const Transform &p_base_transform = Transform(), float p_texel_size = 0.05);
|
||||
Error lightmap_unwrap_cached(int *&r_cache_data, unsigned int &r_cache_size, bool &r_used_cache, const Transform &p_base_transform = Transform(), float p_texel_size = 0.05);
|
||||
|
||||
virtual void reload_from_file();
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue