Just reuse vertices and indices if all regular

QTProject/subdivision.cpp

@@ -71,23 +71,25 @@ void Subdivision::subdivide(Mesh *mesh, int level) {
     input.vertex_buffer = entry->vertices;
     input.index_buffer = entry->indices;
 
-    Tables tables = precomputeTables(input);
-    Result result = runShader(input, tables);
+    if (input.index_buffer.isEmpty()) {
+        current_mesh->update(input.vb_handle, input.vertex_buffer, input.index_buffer, entry->indicesRegular);
+    } else {
+        Tables tables = precomputeTables(input);
+        Result result = runShader(input, tables);
 
-    QVector<unsigned int> regular;
-    QVector<unsigned int> irregular;
-    findRegular(tables.index_buffer, result.vertex_buffer, regular, irregular);
+        QVector<unsigned int> regular;
+        QVector<unsigned int> irregular;
+        findRegular(tables.index_buffer, result.vertex_buffer, regular, irregular);
 
-    qDebug() << "Indices" << tables.index_buffer.length();
-    qDebug() << "regular" << regular.length();
-    qDebug() << "irregular" << irregular.length();
+        qDebug() << "Indices" << tables.index_buffer.length();
+        qDebug() << "regular" << regular.length();
+        qDebug() << "irregular" << irregular.length();
 
-    QVector<unsigned int> patches = getPatchIndexBuffer(regular);
-    qDebug() << "patches" << patches.length();
+        QVector<unsigned int> patches = getPatchIndexBuffer(regular);
+        qDebug() << "patches" << patches.length();
 
-    current_mesh->update(result.vb_handle, result.vertex_buffer, irregular, patches);
-
-    //return new Mesh(f, mesh, result.vertex_buffer, tables.index_buffer);
+        current_mesh->update(result.vb_handle, result.vertex_buffer, irregular, patches);
+    }
 }
 
 /**