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Use WorkerThreadPool for Server threads

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* Servers now use WorkerThreadPool for background computation.
* This helps keep the number of threads used fixed at all times.
* It also ensures everything works on HTML5 with threads.
* And makes it easier to support disabling threads for also HTML5.

CommandQueueMT now syncs with the servers via the WorkerThreadPool
yielding mechanism, which makes its classic main sync semaphore
superfluous.

Also, some warnings about calls that kill performance when using
threaded rendering are removed because there's a mechanism that
warns about that in a more general fashion.

Co-authored-by: Pedro J. Estébanez <pedrojrulez@gmail.com>
This commit is contained in:
Juan Linietsky
2024-04-04 10:18:08 +02:00
committed by Pedro J. Estébanez
parent c28f5901c7
commit 65686dedf9
15 changed files with 208 additions and 204 deletions
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11
main/main.cpp
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@@ -2274,6 +2274,9 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
// Editor and project manager cannot run with rendering in a separate thread (they will crash on startup).
rtm = OS::RENDER_THREAD_SAFE;
}
#if !defined(THREADS_ENABLED)
rtm = OS::RENDER_THREAD_SAFE;
#endif
OS::get_singleton()->_render_thread_mode = OS::RenderThreadMode(rtm);
}
@@ -2717,7 +2720,9 @@ Error Main::setup2() {
}
if (OS::get_singleton()->_render_thread_mode == OS::RENDER_SEPARATE_THREAD) {
WARN_PRINT("The Multi-Threaded rendering thread model is experimental, and has known issues which can lead to project crashes. Use the Single-Safe option in the project settings instead.");
WARN_PRINT("The Multi-Threaded rendering thread model is experimental. Feel free to try it since it will eventually become a stable feature.\n"
"However, bear in mind that at the moment it can lead to project crashes or instability.\n"
"So, unless you want to test the engine, use the Single-Safe option in the project settings instead.");
}
/* Initialize Pen Tablet Driver */
@@ -4025,11 +4030,11 @@ bool Main::iteration() {
if ((!force_redraw_requested) && OS::get_singleton()->is_in_low_processor_usage_mode()) {
if (RenderingServer::get_singleton()->has_changed()) {
RenderingServer::get_singleton()->draw(true, scaled_step); // flush visual commands
Engine::get_singleton()->frames_drawn++;
Engine::get_singleton()->increment_frames_drawn();
}
} else {
RenderingServer::get_singleton()->draw(true, scaled_step); // flush visual commands
Engine::get_singleton()->frames_drawn++;
Engine::get_singleton()->increment_frames_drawn();
force_redraw_requested = false;
}
}