Adjust D3D pacing capability defaults

Co-authored-by: kunitoki <707032+kunitoki@users.noreply.github.com>

Author: Copilot

modules/yup_graphics/native/yup_GraphicsContext_d3d.cpp

@@ -132,7 +132,6 @@ class GraphicsContextD3D : public GraphicsContext
             if (swapchain != nullptr)
                 swapchain.As (&swapchain2);
 
-            canQueryPresentationTiming = swapchain != nullptr;
             applyMaximumFrameLatency();
             updateFrameTimingCapabilities();
         }
@@ -285,21 +284,24 @@ class GraphicsContextD3D : public GraphicsContext
         if (isHeadless)
             return;
 
-        UINT latency = maximumFramesInFlight.has_value()
-                         ? static_cast<UINT> (jlimit<uint32_t> (1, 16, *maximumFramesInFlight))
-                         : 0u;
+        static constexpr UINT defaultMaximumFrameLatency = 3u;
+
+        const bool usesDefaultLatency = ! maximumFramesInFlight.has_value();
+        UINT latency = usesDefaultLatency
+                         ? defaultMaximumFrameLatency
+                         : static_cast<UINT> (jlimit<uint32_t> (1, 16, *maximumFramesInFlight));
         frameLatencyWaitableObject = nullptr;
         canControlMaximumFramesInFlight = false;
 
-        if (swapchain2 != nullptr && latency > 0)
+        if (swapchain2 != nullptr)
         {
             if (SUCCEEDED (swapchain2->SetMaximumFrameLatency (latency)))
             {
                 canControlMaximumFramesInFlight = true;
                 frameLatencyWaitableObject = swapchain2->GetFrameLatencyWaitableObject();
             }
         }
-        else if (auto dxgiDevice = ComPtr<IDXGIDevice1>(); SUCCEEDED (device.As (&dxgiDevice)) && latency > 0)
+        else if (auto dxgiDevice = ComPtr<IDXGIDevice1>(); SUCCEEDED (device.As (&dxgiDevice)))
         {
             canControlMaximumFramesInFlight = SUCCEEDED (dxgiDevice->SetMaximumFrameLatency (latency));
         }
@@ -309,7 +311,7 @@ class GraphicsContextD3D : public GraphicsContext
 
     void updateFrameTimingCapabilities()
     {
-        frameTimingCapabilities.hasPresentationTiming = canQueryPresentationTiming;
+        frameTimingCapabilities.hasPresentationTiming = hasValidPresentationTiming;
         frameTimingCapabilities.hasFrameLatencyWait = frameLatencyWaitableObject != nullptr;
         frameTimingCapabilities.hasGpuCompletionTiming = false;
         frameTimingCapabilities.hasMaximumFramesInFlight = canControlMaximumFramesInFlight;
@@ -333,7 +335,6 @@ class GraphicsContextD3D : public GraphicsContext
     FrameTimingCapabilities frameTimingCapabilities;
     FrameTimingInfo lastFrameTimingInfo;
     HANDLE frameLatencyWaitableObject = nullptr;
-    bool canQueryPresentationTiming = false;
     bool canControlMaximumFramesInFlight = false;
     LARGE_INTEGER qpcFrequency {};
     double lastPresentedAtSeconds = 0.0;

modules/yup_gui/native/yup_FramePacer.h

@@ -208,7 +208,7 @@ class FramePacer
         if (requestedMode == ComponentNative::FramePacingMode::software)
             return configuration.vsyncEnabled ? EffectiveMode::off : EffectiveMode::software;
 
-        if (capabilities.hasPresentationTiming)
+        if (hasPresentationDrivenSupport)
             return EffectiveMode::presentationDriven;
 
         return configuration.vsyncEnabled ? EffectiveMode::off : EffectiveMode::software;