summaryrefslogtreecommitdiff
path: root/src/mesh_generator_thread.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesh_generator_thread.h')
-rw-r--r--src/mesh_generator_thread.h135
1 files changed, 135 insertions, 0 deletions
diff --git a/src/mesh_generator_thread.h b/src/mesh_generator_thread.h
new file mode 100644
index 000000000..6edb6906d
--- /dev/null
+++ b/src/mesh_generator_thread.h
@@ -0,0 +1,135 @@
+/*
+Minetest
+Copyright (C) 2013, 2017 celeron55, Perttu Ahola <celeron55@gmail.com>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+#ifndef MESH_GENERATOR_THREAD_HEADER
+#define MESH_GENERATOR_THREAD_HEADER
+
+#include "mapblock_mesh.h"
+#include "threading/mutex_auto_lock.h"
+#include "util/thread.h"
+
+struct CachedMapBlockData
+{
+ v3s16 p;
+ MapNode *data; // A copy of the MapBlock's data member
+ int refcount_from_queue;
+ int last_used_timestamp;
+
+ CachedMapBlockData();
+ ~CachedMapBlockData();
+};
+
+struct QueuedMeshUpdate
+{
+ v3s16 p;
+ bool ack_block_to_server;
+ bool urgent;
+ int crack_level;
+ v3s16 crack_pos;
+ MeshMakeData *data; // This is generated in MeshUpdateQueue::pop()
+
+ QueuedMeshUpdate();
+ ~QueuedMeshUpdate();
+};
+
+/*
+ A thread-safe queue of mesh update tasks and a cache of MapBlock data
+*/
+class MeshUpdateQueue
+{
+ enum UpdateMode
+ {
+ FORCE_UPDATE,
+ SKIP_UPDATE_IF_ALREADY_CACHED,
+ };
+
+public:
+ MeshUpdateQueue(Client *client);
+
+ ~MeshUpdateQueue();
+
+ // Caches the block at p and its neighbors (if needed) and queues a mesh
+ // update for the block at p
+ void addBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent);
+
+ // Returned pointer must be deleted
+ // Returns NULL if queue is empty
+ QueuedMeshUpdate *pop();
+
+ u32 size()
+ {
+ MutexAutoLock lock(m_mutex);
+ return m_queue.size();
+ }
+
+private:
+ Client *m_client;
+ std::vector<QueuedMeshUpdate *> m_queue;
+ std::set<v3s16> m_urgents;
+ std::map<v3s16, CachedMapBlockData *> m_cache;
+ Mutex m_mutex;
+
+ // TODO: Add callback to update these when g_settings changes
+ bool m_cache_enable_shaders;
+ bool m_cache_use_tangent_vertices;
+ bool m_cache_smooth_lighting;
+ int m_meshgen_block_cache_size;
+
+ CachedMapBlockData *cacheBlock(Map *map, v3s16 p, UpdateMode mode,
+ size_t *cache_hit_counter = NULL);
+ CachedMapBlockData *getCachedBlock(const v3s16 &p);
+ void fillDataFromMapBlockCache(QueuedMeshUpdate *q);
+ void cleanupCache();
+};
+
+struct MeshUpdateResult
+{
+ v3s16 p;
+ MapBlockMesh *mesh;
+ bool ack_block_to_server;
+
+ MeshUpdateResult()
+ : p(-1338, -1338, -1338), mesh(NULL), ack_block_to_server(false)
+ {
+ }
+};
+
+class MeshUpdateThread : public UpdateThread
+{
+public:
+ MeshUpdateThread(Client *client);
+
+ // Caches the block at p and its neighbors (if needed) and queues a mesh
+ // update for the block at p
+ void updateBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent);
+
+ v3s16 m_camera_offset;
+ MutexedQueue<MeshUpdateResult> m_queue_out;
+
+private:
+ MeshUpdateQueue m_queue_in;
+
+ // TODO: Add callback to update these when g_settings changes
+ int m_generation_interval;
+
+protected:
+ virtual void doUpdate();
+};
+
+#endif