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Codechange: use (Un)LockVideoBuffer() to manage video buffer

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This commit is contained in:
Patric Stout
2021-02-20 10:49:27 +01:00
committed by Patric Stout
parent 661eb39ecc
commit 761efbb457
7 changed files with 80 additions and 24 deletions
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19
src/video/sdl2_v.cpp
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@@ -801,9 +801,9 @@ void VideoDriver_SDL::LoopOnce()
/* The gameloop is the part that can run asynchronously. The rest
* except sleeping can't. */
if (_draw_mutex != nullptr) draw_lock.unlock();
this->UnlockVideoBuffer();
GameLoop();
if (_draw_mutex != nullptr) draw_lock.lock();
this->LockVideoBuffer();
}
/* Prevent drawing when switching mode, as windows can be removed when they should still appear. */
@@ -834,9 +834,9 @@ void VideoDriver_SDL::LoopOnce()
auto now = std::chrono::steady_clock::now();
if (next_tick > now) {
if (_draw_mutex != nullptr) draw_lock.unlock();
this->UnlockVideoBuffer();
std::this_thread::sleep_for(next_tick - now);
if (_draw_mutex != nullptr) draw_lock.lock();
this->LockVideoBuffer();
}
}
#endif
@@ -986,3 +986,14 @@ Dimension VideoDriver_SDL::GetScreenSize() const
return { static_cast<uint>(mode.w), static_cast<uint>(mode.h) };
}
bool VideoDriver_SDL::LockVideoBuffer()
{
if (_draw_threaded) this->draw_lock.lock();
return true;
}
void VideoDriver_SDL::UnlockVideoBuffer()
{
if (_draw_threaded) this->draw_lock.unlock();
}