mirror of
https://github.com/moonlight-stream/moonlight-qt
synced 2024-12-15 13:52:28 +00:00
49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
#include "dxvsyncsource.h"
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#include <dwmapi.h>
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DxVsyncSource::DxVsyncSource(Pacer* pacer) :
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m_Pacer(pacer),
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m_Thread(nullptr)
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{
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SDL_AtomicSet(&m_Stopping, 0);
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}
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DxVsyncSource::~DxVsyncSource()
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{
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if (m_Thread != nullptr) {
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SDL_AtomicSet(&m_Stopping, 1);
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SDL_WaitThread(m_Thread, nullptr);
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}
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}
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bool DxVsyncSource::initialize(SDL_Window* window)
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{
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m_Thread = SDL_CreateThread(vsyncThread, "DX Vsync Thread", this);
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if (m_Thread == nullptr) {
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SDL_LogError(SDL_LOG_CATEGORY_APPLICATION,
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"Unable to create DX V-sync thread: %s",
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SDL_GetError());
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return false;
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}
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return true;
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}
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int DxVsyncSource::vsyncThread(void* context)
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{
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DxVsyncSource* me = reinterpret_cast<DxVsyncSource*>(context);
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SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH);
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while (SDL_AtomicGet(&me->m_Stopping) == 0) {
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// FIXME: We should really use D3DKMTWaitForVerticalBlankEvent() instead!
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// https://bugs.chromium.org/p/chromium/issues/detail?id=467617
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// https://chromium.googlesource.com/chromium/src.git/+/c564f2fe339b2b2abb0c8773c90c83215670ea71/gpu/ipc/service/gpu_vsync_provider_win.cc
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DwmFlush();
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me->m_Pacer->vsyncCallback();
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}
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return 0;
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}
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