GeorgH93/OpenVulkano
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main loop improvements

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This commit is contained in:
ohyzha
2024-08-25 16:21:31 +03:00
parent f002ea2eca
commit 32ffd21076
3 changed files with 44 additions and 6 deletions
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34
openVulkanoCpp/Host/GraphicsAppManager.cpp
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@@ -41,6 +41,12 @@ namespace OpenVulkano
window->SetWindowHandler(this);
inputManager = Input::InputManager::GetInstance();
engineConfig = EngineConfiguration::GetEngineConfiguration();
engineConfig->OnFpsCapChanged += EventHandler(this, &GraphicsAppManager::UpdateCappedFpsInfo);
// set initial values
if (engineConfig->GetFpsCap() > 0)
{
UpdateCappedFpsInfo(engineConfig->GetFpsCap());
}
}
GraphicsAppManager::GraphicsAppManager(IGraphicsApp* app, IWindow* window, RenderAPI::RenderApi renderApi)
@@ -63,19 +69,38 @@ namespace OpenVulkano
window->SetWindowHandler(this);
inputManager = OpenVulkano::Input::InputManager::GetInstance();
engineConfig = OpenVulkano::EngineConfiguration::GetEngineConfiguration();
engineConfig->OnFpsCapChanged += EventHandler(this, &GraphicsAppManager::UpdateCappedFpsInfo);
// set initial values
if (engineConfig->GetFpsCap() > 0)
{
UpdateCappedFpsInfo(engineConfig->GetFpsCap());
}
}
void GraphicsAppManager::UpdateCappedFpsInfo(int32_t newFpsCap)
{
if (newFpsCap < 0)
{
cappedFrameTime = std::chrono::milliseconds(0);
}
else
{
cappedFrameTime = std::chrono::milliseconds(1000 / newFpsCap);
}
}
void GraphicsAppManager::OnCappedFPS(const auto& frameStartTime)
{
int32_t fpsCap = engineConfig->GetFpsCap();
fpsCapRemainder += 1000 % fpsCap;
auto frameTime = std::chrono::milliseconds(1000 / fpsCap);
auto expectedFrameTime = cappedFrameTime;
if (fpsCapRemainder >= fpsCap)
{
frameTime += std::chrono::milliseconds(1);
expectedFrameTime += std::chrono::milliseconds(1);
fpsCapRemainder -= fpsCap;
}
while (clock::now() < frameStartTime + frameTime)
auto frameEndTime = frameStartTime + expectedFrameTime;
while (clock::now() < frameEndTime)
{
std::this_thread::yield();
}
@@ -84,6 +109,7 @@ namespace OpenVulkano
GraphicsAppManager::~GraphicsAppManager() noexcept
{
if (windowTitleFormat.empty()) return;
engineConfig->OnFpsCapChanged -= EventHandler(this, &GraphicsAppManager::UpdateCappedFpsInfo);
ShutDown();
}
@@ -165,7 +191,7 @@ namespace OpenVulkano
inputManager->Tick();
app->Tick();
if (CURRENT_FRAME.needsRedraw) renderer->Tick();
if (engineConfig->GetFpsCap() > 0 && !engineConfig->GetVSync())
if (cappedFrameTime.count())
{
OnCappedFPS(start);
}