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MeshUpdateQueue: Add a MapBlock cache that minimizes the amount of MapBlock copying done in the main thread

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Cache size is configurable by the meshgen_block_cache_size (default 20 MB).

New profiler stats:
- MeshUpdateQueue MapBlock cache hit %
- MeshUpdateQueue MapBlock cache size kB

Removes one type of stutter that was seen on the client when received MapBlocks
were being handled. (the "MeshMakeData::fill" stutter)

Kind of related to at least #5239

Originally preceded by these commits, now includes them:
- Move the mesh generator thread into src/mesh_generator_thread.{cpp,h}
- mesh_generator_thread.cpp: Update code style
- MeshUpdateThread: Modify interface to house a different implementation: Actual functionality will be changed by next commits.
- MeshMakeData: Add fillBlockData() interface (so that caller can fill in stuff from eg. a MapBlock cache)
This commit is contained in:
Perttu Ahola 2017-04-15 10:55:52 +03:00 • committed by celeron55
parent 4323ad163f
commit 04cc9de8f2
12 changed files with 526 additions and 278 deletions
Download patch file Download diff file Expand all files Collapse all files

178
src/client.cpp
View file

@ -50,147 +50,6 @@ with this program; if not, write to the Free Software Foundation, Inc.,
extern gui::IGUIEnvironment* guienv;
/*
QueuedMeshUpdate
*/
QueuedMeshUpdate::QueuedMeshUpdate():
p(-1337,-1337,-1337),
data(NULL),
ack_block_to_server(false)
{
}
QueuedMeshUpdate::~QueuedMeshUpdate()
{
if(data)
delete data;
}
/*
MeshUpdateQueue
*/
MeshUpdateQueue::MeshUpdateQueue()
{
}
MeshUpdateQueue::~MeshUpdateQueue()
{
MutexAutoLock lock(m_mutex);
for(std::vector<QueuedMeshUpdate*>::iterator
i = m_queue.begin();
i != m_queue.end(); ++i)
{
QueuedMeshUpdate *q = *i;
delete q;
}
}
/*
peer_id=0 adds with nobody to send to
*/
void MeshUpdateQueue::addBlock(v3s16 p, MeshMakeData *data, bool ack_block_to_server, bool urgent)
{
DSTACK(FUNCTION_NAME);
assert(data); // pre-condition
MutexAutoLock lock(m_mutex);
if(urgent)
m_urgents.insert(p);
/*
Find if block is already in queue.
If it is, update the data and quit.
*/
for(std::vector<QueuedMeshUpdate*>::iterator
i = m_queue.begin();
i != m_queue.end(); ++i)
{
QueuedMeshUpdate *q = *i;
if(q->p == p)
{
if(q->data)
delete q->data;
q->data = data;
if(ack_block_to_server)
q->ack_block_to_server = true;
return;
}
}
/*
Add the block
*/
QueuedMeshUpdate *q = new QueuedMeshUpdate;
q->p = p;
q->data = data;
q->ack_block_to_server = ack_block_to_server;
m_queue.push_back(q);
}
// Returned pointer must be deleted
// Returns NULL if queue is empty
QueuedMeshUpdate *MeshUpdateQueue::pop()
{
MutexAutoLock lock(m_mutex);
bool must_be_urgent = !m_urgents.empty();
for(std::vector<QueuedMeshUpdate*>::iterator
i = m_queue.begin();
i != m_queue.end(); ++i)
{
QueuedMeshUpdate *q = *i;
if(must_be_urgent && m_urgents.count(q->p) == 0)
continue;
m_queue.erase(i);
m_urgents.erase(q->p);
return q;
}
return NULL;
}
/*
MeshUpdateThread
*/
MeshUpdateThread::MeshUpdateThread() : UpdateThread("Mesh")
{
m_generation_interval = g_settings->getU16("mesh_generation_interval");
m_generation_interval = rangelim(m_generation_interval, 0, 50);
}
void MeshUpdateThread::enqueueUpdate(v3s16 p, MeshMakeData *data,
bool ack_block_to_server, bool urgent)
{
m_queue_in.addBlock(p, data, ack_block_to_server, urgent);
deferUpdate();
}
void MeshUpdateThread::doUpdate()
{
QueuedMeshUpdate *q;
while ((q = m_queue_in.pop())) {
if (m_generation_interval)
sleep_ms(m_generation_interval);
ScopeProfiler sp(g_profiler, "Client: Mesh making");
MapBlockMesh *mesh_new = new MapBlockMesh(q->data, m_camera_offset);
MeshUpdateResult r;
r.p = q->p;
r.mesh = mesh_new;
r.ack_block_to_server = q->ack_block_to_server;
m_queue_out.push_back(r);
delete q;
}
}
/*
Client
*/
@ -220,7 +79,7 @@ Client::Client(
m_nodedef(nodedef),
m_sound(sound),
m_event(event),
m_mesh_update_thread(),
m_mesh_update_thread(this),
m_env(
new ClientMap(this, control,
device->getSceneManager()->getRootSceneNode(),
@ -269,12 +128,6 @@ Client::Client(
m_minimap = new Minimap(device, this);
m_cache_save_interval = g_settings->getU16("server_map_save_interval");
m_cache_smooth_lighting = g_settings->getBool("smooth_lighting");
m_cache_enable_shaders = g_settings->getBool("enable_shaders");
m_cache_use_tangent_vertices = m_cache_enable_shaders && (
g_settings->getBool("enable_bumpmapping") ||
g_settings->getBool("enable_parallax_occlusion"));
m_modding_enabled = g_settings->getBool("enable_client_modding");
m_script = new ClientScripting(this);
m_env.setScript(m_script);
@ -1605,6 +1458,11 @@ int Client::getCrackLevel()
return m_crack_level;
}
v3s16 Client::getCrackPos()
{
return m_crack_pos;
}
void Client::setCrack(int level, v3s16 pos)
{
int old_crack_level = m_crack_level;
@ -1670,28 +1528,14 @@ void Client::typeChatMessage(const std::wstring &message)
void Client::addUpdateMeshTask(v3s16 p, bool ack_to_server, bool urgent)
{
// Check if the block exists to begin with. In the case when a non-existing
// neighbor is automatically added, it may not. In that case we don't want
// to tell the mesh update thread about it.
MapBlock *b = m_env.getMap().getBlockNoCreateNoEx(p);
if(b == NULL)
if (b == NULL)
return;
/*
Create a task to update the mesh of the block
*/
MeshMakeData *data = new MeshMakeData(this, m_cache_enable_shaders,
m_cache_use_tangent_vertices);
{
//TimeTaker timer("data fill");
// Release: ~0ms
// Debug: 1-6ms, avg=2ms
data->fill(b);
data->setCrack(m_crack_level, m_crack_pos);
data->setSmoothLighting(m_cache_smooth_lighting);
}
// Add task to queue
m_mesh_update_thread.enqueueUpdate(p, data, ack_to_server, urgent);
m_mesh_update_thread.updateBlock(&m_env.getMap(), p, ack_to_server, urgent);
}
void Client::addUpdateMeshTaskWithEdge(v3s16 blockpos, bool ack_to_server, bool urgent)