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Code Issues 157 Wiki Activity

perf(sleepers): the rails of each track for the fastenings worked out once and kept until its geometry is made again, it goes far or the crossings change, not again for every track laid around it; the fastenings laid only out to 30 m past where they're drawn, the tracks further out keeping their beams to lay them on as they come near; out past 50 m the tracks laid while the laying in a frame took under 2 ms, the rest in the frames after

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maj00r
2026-10-24 00:23:50 +02:00
parent 2e00619d7f
commit f155956669
8 changed files with 225 additions and 114 deletions
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27
rendering/opengl46/opengl46renderer.cpp
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@@ -6203,6 +6203,12 @@ void opengl46_renderer::Render_Timbers( scene::basic_cell::path_sequence::const_
m_timbersweepframe = m_framestamp;
track_sleepers::release_far( camera, range + 600.0 );
}
if( m_timberlayframe != m_framestamp ) {
m_timberlayframe = m_framestamp;
m_timberlaying = 0.0;
}
// the fastenings laid out to a little past where they're drawn
auto const fasteningrange = std::min( static_cast<double>( Global.SleeperDistance ), track_sleepers::fastening_range ) + track_sleepers::fastening_lead;
glm::mat4 const originmodelview = OpenGLMatrices.data( GL_MODELVIEW );
for( auto &bucket : m_timberbuckets ) {
bucket.instances.clear();
@@ -6243,15 +6249,28 @@ void opengl46_renderer::Render_Timbers( scene::basic_cell::path_sequence::const_
for( auto first { First }; first != Last; ++first ) {
auto *track = *first;
if( false == track->m_visible || false == track->m_sleepers3d.active ) { continue; }
if( glm::length( track->location() - camera ) > range + track->radius() ) {
auto const trackdistance = glm::length( track->location() - camera );
if( trackdistance > range + track->radius() ) {
// worked out ahead, in the background, before it comes in range
if( false == shadows && track->m_sleepers3d.dirty && glm::length( track->location() - camera ) < range + track->radius() + 300.0 ) {
if( false == shadows && track->m_sleepers3d.dirty && trackdistance < range + track->radius() + 300.0 ) {
track_sleepers::prefetch( *track );
}
continue;
}
if( track->m_sleepers3d.dirty ) {
track_sleepers::lay( *track );
auto const fastened = ( trackdistance < fasteningrange + track->radius() );
if( track->m_sleepers3d.dirty || ( fastened && false == track->m_sleepers3d.fastened ) ) {
// the nearest at once, the others while the frame has the time, the cells nearest coming first; till then a track draws
// what it had
if( trackdistance < track_sleepers::lay_near + track->radius() || m_timberlaying < track_sleepers::lay_budget ) {
auto const start = std::chrono::steady_clock::now();
if( track->m_sleepers3d.dirty ) {
track_sleepers::lay( *track, fastened );
}
else {
track_sleepers::fasten( *track );
}
m_timberlaying += std::chrono::duration<double, std::milli>( std::chrono::steady_clock::now() - start ).count();
}
}
auto const &laid = track->m_sleepers3d;
if( laid.timbers == nullptr ) { continue; }

2
rendering/opengl46/opengl46renderer.h
View File

@@ -610,6 +610,8 @@ class opengl46_renderer : public gfx_renderer {
unsigned int m_framestamp; // id of currently rendered gfx frame
unsigned int m_timbersweepframe { 0 }; // the frame the beams of the tracks far away were last let go in
unsigned int m_timberlayframe { 0 }; // the frame the time spent laying the beams is counted for
double m_timberlaying { 0.0 }; // in ms
float m_framerate;
double m_updateaccumulator{0.0};
std::string m_debugtimestext;