Windows: Improve the frame rate of demos with vsync

2 files changed, 3 insertions, 2 deletions

diff --git a/examples/pugl_shader_demo.c b/examples/pugl_shader_demo.c
index 63a86ab..178278b 100644
--- a/examples/pugl_shader_demo.c
+++ b/examples/pugl_shader_demo.c
@@ -433,7 +433,8 @@ updateTimeout(const PuglTestApp* const app)
   const int    refreshRate      = puglGetViewHint(app->view, PUGL_REFRESH_RATE);
   const double now              = puglGetTime(app->world);
   const double nextFrameEndTime = app->lastFrameEndTime + (1.0 / refreshRate);
-  const double nextExposeTime   = nextFrameEndTime - app->lastDrawDuration;
+  const double neededTime       = 1.5 * app->lastDrawDuration;
+  const double nextExposeTime   = nextFrameEndTime - neededTime;
   const double timeUntilNext    = nextExposeTime - now;
 
   return timeUntilNext;
diff --git a/examples/pugl_vulkan_cpp_demo.cpp b/examples/pugl_vulkan_cpp_demo.cpp
index bb1448d..eb41b09 100644
--- a/examples/pugl_vulkan_cpp_demo.cpp
+++ b/examples/pugl_vulkan_cpp_demo.cpp
@@ -1803,7 +1803,7 @@ run(const char* const      programPath,
 
   const int    refreshRate   = app.view.getHint(pugl::ViewHint::refreshRate);
   const double frameDuration = 1.0 / static_cast<double>(refreshRate);
-  const double timeout       = app.opts.sync ? frameDuration : 0.0;
+  const double timeout       = app.opts.sync ? frameDuration * 0.8 : 0.0;
 
   PuglFpsPrinter fpsPrinter = {app.world.time()};
   app.view.show(pugl::ShowCommand::passive);