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Stuart Buchanan :

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It fixes the following issues (to a greater or lesser extent):
1) Performance. Quad trees used to improve culling, and the sprites are placed on the surface of a sphere rather than
randomly throughout the cloud, requiring fewer textures. This saves about 5-10fps on my machine.
2) Disabled 3D clouds have no performance impact. Previously they were still in the scenegraph. Now they are removed.
3) Clouds are now loaded on start-up, and don't require the scenario to be changed, they also work with METAR.
4) The cloud field is shifted as you travel. There's a small bug in that the clouds "jump" as you reach the edge of the field.
5) Iterative sorting of sprites. This doesn't appear to solve the alpha blending problem completely, but may help a bit.
This commit is contained in:
fredb 2008-11-06 21:58:50 +00:00
parent 78d3763b41
commit 7b547acbf9
3 changed files with 83 additions and 43 deletions
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8
src/Environment/environment_mgr.cxx
View file

@ -182,14 +182,14 @@ FGEnvironmentMgr::bind ()
&FGEnvironmentMgr::set_cloud_layer_coverage);
fgSetArchivable(buf);
}
fgTie("/sim/rendering/clouds3d-enable", thesky,
&SGSky::get_3dClouds,
&SGSky::set_3dClouds);
fgTie("/sim/rendering/clouds3d-enable", fgClouds,
&FGClouds::get_3dClouds,
&FGClouds::set_3dClouds);
fgTie("/sim/rendering/clouds3d-density", thesky,
&SGSky::get_3dCloudDensity,
&SGSky::set_3dCloudDensity);
fgTie("/sim/rendering/precipitation-enable", &sgEnviro,
&SGEnviro::get_precipitation_enable_state,
&SGEnviro::get_precipitation_enable_state,
&SGEnviro::set_precipitation_enable_state);
fgTie("/environment/rebuild-layers", fgClouds,
&FGClouds::get_update_event,

109
src/Environment/fgclouds.cxx
View file

@ -51,6 +51,7 @@ FGClouds::FGClouds(FGEnvironmentCtrl * controller) :
station_elevation_ft(0.0),
_controller( controller ),
snd_lightning(NULL),
rebuild_required(true),
last_scenario( "none" ),
last_env_config( new SGPropertyNode() ),
last_env_clouds( new SGPropertyNode() )
@ -78,6 +79,8 @@ void FGClouds::init(void) {
soundMgr->add( snd_lightning, "thunder" );
sgEnviro.set_soundMgr( soundMgr );
}
rebuild_required = true;
}
void FGClouds::buildCloud(SGPropertyNode *cloud_def_root, SGPropertyNode *box_def_root, const string& name, sgVec3 pos, SGCloudField *layer) {
@ -154,6 +157,8 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov
int CloudVarietyCount = 0;
double totalCount = 0.0;
if (! clouds_3d_enabled) return;
SGPropertyNode *cloud_def_root = fgGetNode("/environment/cloudlayers/clouds", false);
SGPropertyNode *box_def_root = fgGetNode("/environment/cloudlayers/boxes", false);
SGPropertyNode *layer_def_root = fgGetNode("/environment/cloudlayers/layers", false);
@ -231,7 +236,7 @@ void FGClouds::buildLayer(int iLayer, const string& name, double alt, double cov
}
// Now we've built any clouds, enable them
thesky->get_cloud_layer(iLayer)->set_enable3dClouds(thesky->get_3dClouds());
thesky->get_cloud_layer(iLayer)->set_enable3dClouds(clouds_3d_enabled);
}
// TODO:call this after real metar updates
@ -476,48 +481,80 @@ void FGClouds::buildScenario( const string& scenario ) {
}
void FGClouds::build(void) {
void FGClouds::build() {
string scenario = fgGetString("/environment/weather-scenario", "METAR");
if( scenario == last_scenario)
return;
if( last_scenario == "none" ) {
if(!rebuild_required && (scenario == last_scenario))
return;
if( last_scenario == "none" ) {
// save clouds and weather conditions
SGPropertyNode *param = fgGetNode("/environment/config", true);
copyProperties( param, last_env_config );
param = fgGetNode("/environment/clouds", true);
copyProperties( param, last_env_clouds );
}
if( scenario == "METAR" ) {
string realMetar = fgGetString("/environment/metar/real-metar", "");
if( realMetar != "" ) {
fgSetString("/environment/metar/last-metar", realMetar.c_str());
FGMetar *m = new FGMetar( realMetar );
update_metar_properties( m );
update_env_config();
SGPropertyNode *param = fgGetNode("/environment/config", true);
copyProperties( param, last_env_config );
param = fgGetNode("/environment/clouds", true);
copyProperties( param, last_env_clouds );
}
if( scenario == "METAR" ) {
string realMetar = fgGetString("/environment/metar/real-metar", "");
if( realMetar != "" ) {
fgSetString("/environment/metar/last-metar", realMetar.c_str());
FGMetar *m = new FGMetar( realMetar );
update_metar_properties( m );
update_env_config();
// propagate aloft tables
_controller->reinit();
}
buildMETAR();
}
else if( scenario == "none" ) {
_controller->reinit();
}
buildMETAR();
}
else if( scenario == "none" ) {
// restore clouds and weather conditions
SGPropertyNode *param = fgGetNode("/environment/config", true);
copyProperties( last_env_config, param );
param = fgGetNode("/environment/clouds", true);
copyProperties( last_env_clouds, param );
fgSetDouble("/environment/metar/rain-norm", 0.0);
fgSetDouble("/environment/metar/snow-norm", 0.0);
SGPropertyNode *param = fgGetNode("/environment/config", true);
copyProperties( last_env_config, param );
param = fgGetNode("/environment/clouds", true);
copyProperties( last_env_clouds, param );
fgSetDouble("/environment/metar/rain-norm", 0.0);
fgSetDouble("/environment/metar/snow-norm", 0.0);
// update_env_config();
// propagate aloft tables
_controller->reinit();
buildMETAR();
}
else
buildScenario( scenario );
last_scenario = scenario;
_controller->reinit();
buildMETAR();
}
else
buildScenario( scenario );
last_scenario = scenario;
rebuild_required = false;
// ...
if( snd_lightning == NULL )
init();
if( snd_lightning == NULL )
init();
}
void FGClouds::set_3dClouds(bool enable)
{
if (enable != clouds_3d_enabled)
{
clouds_3d_enabled = enable;
for(int iLayer = 0 ; iLayer < thesky->get_cloud_layer_count(); iLayer++) {
thesky->get_cloud_layer(iLayer)->set_enable3dClouds(enable);
if (!enable) {
thesky->get_cloud_layer(iLayer)->get_layer3D()->clear();
}
}
if (enable)
{
rebuild_required = true;
build();
}
}
}
bool FGClouds::get_3dClouds() const {
return clouds_3d_enabled;
}

9
src/Environment/fgclouds.hxx
View file

@ -59,8 +59,10 @@ void buildCloud(SGPropertyNode *cloud_def_root, SGPropertyNode *box_def_root, co
SGSoundSample *snd_lightning;
FGEnvironmentCtrl * _controller;
float station_elevation_ft;
string last_scenario;
SGPropertyNode *last_env_config, *last_env_clouds;
bool clouds_3d_enabled;
bool rebuild_required;
string last_scenario;
SGPropertyNode *last_env_config, *last_env_clouds;
public:
FGClouds(FGEnvironmentCtrl * controller);
@ -72,7 +74,8 @@ public:
int get_update_event(void) const;
void set_update_event(int count);
bool get_3dClouds() const;
void set_3dClouds(bool enable);
};
#endif // _FGCLOUDS_HXX