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-rw-r--r--editor/import/scene_importer_mesh.cpp46
1 files changed, 42 insertions, 4 deletions
diff --git a/editor/import/scene_importer_mesh.cpp b/editor/import/scene_importer_mesh.cpp
index cd7d58c6f6..620437af0e 100644
--- a/editor/import/scene_importer_mesh.cpp
+++ b/editor/import/scene_importer_mesh.cpp
@@ -140,6 +140,12 @@ void EditorSceneImporterMesh::generate_lods() {
if (!SurfaceTool::simplify_func) {
return;
}
+ if (!SurfaceTool::simplify_scale_func) {
+ return;
+ }
+ if (!SurfaceTool::simplify_sloppy_func) {
+ return;
+ }
for (int i = 0; i < surfaces.size(); i++) {
if (surfaces[i].primitive != Mesh::PRIMITIVE_TRIANGLES) {
@@ -157,20 +163,52 @@ void EditorSceneImporterMesh::generate_lods() {
int min_indices = 10;
int index_target = indices.size() / 2;
- print_line("total: " + itos(indices.size()));
+ print_line("Total indices: " + itos(indices.size()));
+ float mesh_scale = SurfaceTool::simplify_scale_func((const float *)vertices_ptr, vertex_count, sizeof(Vector3));
+ const float target_error = 1e-3f;
+ float abs_target_error = target_error / mesh_scale;
while (index_target > min_indices) {
float error;
Vector<int> new_indices;
new_indices.resize(indices.size());
- size_t new_len = SurfaceTool::simplify_func((unsigned int *)new_indices.ptrw(), (const unsigned int *)indices.ptr(), indices.size(), (const float *)vertices_ptr, vertex_count, sizeof(Vector3), index_target, 1e20, &error);
- print_line("shoot for " + itos(index_target) + ", got " + itos(new_len) + " distance " + rtos(error));
+ size_t new_len = SurfaceTool::simplify_func((unsigned int *)new_indices.ptrw(), (const unsigned int *)indices.ptr(), indices.size(), (const float *)vertices_ptr, vertex_count, sizeof(Vector3), index_target, abs_target_error, &error);
if ((int)new_len > (index_target * 120 / 100)) {
+ // Attribute discontinuities break normals.
+ bool is_sloppy = false;
+ if (is_sloppy) {
+ abs_target_error = target_error / mesh_scale;
+ index_target = new_len;
+ while (index_target > min_indices) {
+ Vector<int> sloppy_new_indices;
+ sloppy_new_indices.resize(indices.size());
+ new_len = SurfaceTool::simplify_sloppy_func((unsigned int *)sloppy_new_indices.ptrw(), (const unsigned int *)indices.ptr(), indices.size(), (const float *)vertices_ptr, vertex_count, sizeof(Vector3), index_target, abs_target_error, &error);
+ if ((int)new_len > (index_target * 120 / 100)) {
+ break; // 20 percent tolerance
+ }
+ sloppy_new_indices.resize(new_len);
+ Surface::LOD lod;
+ lod.distance = error * mesh_scale;
+ abs_target_error = lod.distance;
+ if (Math::is_equal_approx(abs_target_error, 0.0f)) {
+ return;
+ }
+ lod.indices = sloppy_new_indices;
+ print_line("Lod " + itos(surfaces.write[i].lods.size()) + " shoot for " + itos(index_target / 3) + " triangles, got " + itos(new_len / 3) + " triangles. Distance " + rtos(lod.distance) + ". Use simplify sloppy.");
+ surfaces.write[i].lods.push_back(lod);
+ index_target /= 2;
+ }
+ }
break; // 20 percent tolerance
}
new_indices.resize(new_len);
Surface::LOD lod;
- lod.distance = error;
+ lod.distance = error * mesh_scale;
+ abs_target_error = lod.distance;
+ if (Math::is_equal_approx(abs_target_error, 0.0f)) {
+ return;
+ }
lod.indices = new_indices;
+ print_line("Lod " + itos(surfaces.write[i].lods.size()) + " shoot for " + itos(index_target / 3) + " triangles, got " + itos(new_len / 3) + " triangles. Distance " + rtos(lod.distance));
surfaces.write[i].lods.push_back(lod);
index_target /= 2;
}