[d3d11] Add frame rate limiter and dxgi.maxFrameRate option

dxvk.conf

@@ -24,6 +24,7 @@
 # 
 # Supported values : Any non-negative integer
 
+# dxgi.maxFrameRate = 0
 # d3d9.maxFrameRate = 0
 
 

src/d3d11/d3d11_options.cpp

@@ -19,6 +19,7 @@ namespace dxvk {
     this->deferSurfaceCreation  = config.getOption<bool>("dxgi.deferSurfaceCreation", false);
     this->numBackBuffers        = config.getOption<int32_t>("dxgi.numBackBuffers", 0);
     this->maxFrameLatency       = config.getOption<int32_t>("dxgi.maxFrameLatency", 0);
+    this->maxFrameRate          = config.getOption<int32_t>("dxgi.maxFrameRate", 0);
     this->syncInterval          = config.getOption<int32_t>("dxgi.syncInterval", -1);
     this->tearFree              = config.getOption<Tristate>("dxgi.tearFree", Tristate::Auto);
 

src/d3d11/d3d11_options.h

@@ -83,6 +83,9 @@ namespace dxvk {
     /// a higher value. May help with frame timing issues.
     int32_t maxFrameLatency;
 
+    /// Limit frame rate
+    int32_t maxFrameRate;
+
     /// Defer surface creation until first present call. This
     /// fixes issues with games that create multiple swap chains
     /// for a single window that may interfere with each other.

src/d3d11/d3d11_swapchain.cpp

@@ -380,6 +380,9 @@ namespace dxvk {
       presenterDevice,
       presenterDesc);
     
+    m_presenter->setFrameRateLimit(m_parent->GetOptions()->maxFrameRate);
+    m_presenter->setFrameRateLimiterRefreshRate(m_displayRefreshRate);
+
     CreateRenderTargetViews();
   }
 

src/d3d11/d3d11_swapchain.h

@@ -108,6 +108,8 @@ namespace dxvk {
     bool                    m_dirty = true;
     bool                    m_vsync = true;
 
+    double                  m_displayRefreshRate = 0.0;
+
     HRESULT PresentImage(UINT SyncInterval);
 
     void SubmitPresent(