[Examples] Fixed time record output and improved Fonts example FPS ou…

…tput.

- Added missing '%' character to time record output (when F1 is pressed in examples).
- Show average FPS in Fonts example after every 500 milliseconds.

examples/Cpp/ExampleBase/ExampleBase.cpp

@@ -26,6 +26,8 @@
 #endif
 #include <inttypes.h>
 
+#define IMMEDIATE_SUBMIT_CMDBUFFER 0
+
 
 /*
  * Global helper functions
@@ -384,7 +386,7 @@ void ExampleBase::Run()
  "-------------------\n"
  );
  for (const LLGL::ProfileTimeRecord& rec : frameProfile.timeRecords)
- LLGL::Log::Printf("%s: " PRIu64 " ns\n", rec.annotation, rec.elapsedTime);
+ LLGL::Log::Printf("%s: %" PRIu64 " ns\n", rec.annotation, rec.elapsedTime);
 
  debuggerObj_->SetTimeRecording(false);
  showTimeRecords = false;
@@ -502,7 +504,9 @@ ExampleBase::ExampleBase(const LLGL::UTF8String& title)
  LLGL::CommandBufferDescriptor cmdBufferDesc;
  {
  cmdBufferDesc.debugName = "Commands";
- //cmdBufferDesc.flags = LLGL::CommandBufferFlags::ImmediateSubmit;
+ #if IMMEDIATE_SUBMIT_CMDBUFFER
+ cmdBufferDesc.flags = LLGL::CommandBufferFlags::ImmediateSubmit;
+ #endif
  }
  commands = renderer->CreateCommandBuffer(cmdBufferDesc);
 

examples/Cpp/Fonts/Example.cpp

@@ -7,6 +7,7 @@
 
 #include <ExampleBase.h>
 #include <LLGL/Platform/Platform.h>
+#include <chrono>
 
 #define FONT_COURIER_NEW_16 ( 0 )
 #define FONT_LUCIDA_CONSOLE_32 ( 1 )
@@ -63,11 +64,19 @@ class Example_Fonts : public ExampleBase
  // Some numbers to display on screen.
  struct DisplayNumbers
  {
- int counter = 0;
- int fps = 0;
+ int frameCounter  = 0;
+ int averageFPS  = 0;
  }
  displayNumbers;
 
+ struct AverageFPS
+ {
+ int samples = 0;
+ double sum = 0.0;
+ std::chrono::system_clock::time_point lastTimePoint = std::chrono::system_clock::now();
+ }
+ avgFPS;
+
  // Pre-defined fonts
  struct FontMetaData
  {
@@ -375,9 +384,26 @@ class Example_Fonts : public ExampleBase
  config.shadow = !config.shadow;
 
  // Update frame counters
- displayNumbers.counter++;
- if (displayNumbers.counter % 10 == 0)
- displayNumbers.fps = static_cast<int>(1.0 / timer.GetDeltaTime());
+ displayNumbers.frameCounter++;
+
+ // Update average FPS every 500 milliseconds
+ const double fps = 1.0 / timer.GetDeltaTime();
+
+ if (!std::isinf(fps))
+ {
+ avgFPS.samples++;
+ avgFPS.sum += fps;
+ }
+
+ auto currentTimePoint = std::chrono::system_clock::now();
+ auto timeSinceLastAvgFPSUpdate = std::chrono::duration_cast<std::chrono::milliseconds>(currentTimePoint - avgFPS.lastTimePoint).count();
+ if (timeSinceLastAvgFPSUpdate > 500 && avgFPS.samples > 0)
+ {
+ displayNumbers.averageFPS = static_cast<int>(avgFPS.sum / static_cast<double>(avgFPS.samples) + 0.5);
+ avgFPS.samples = 0;
+ avgFPS.sum = 0.0;
+ avgFPS.lastTimePoint = currentTimePoint;
+ }
 
  // Reset batch counter
  numBatches = 0;
@@ -419,7 +445,7 @@ class Example_Fonts : public ExampleBase
 
  // Draw frame counter
  DrawFont(
- "Frame counter: " + std::to_string(displayNumbers.counter),
+ "Frame counter: " + std::to_string(displayNumbers.frameCounter),
  screenWidth - paragraphMargin, paragraphPosY, colorYellow,
  fontFlags | DrawRightAligned
  );
@@ -434,7 +460,7 @@ class Example_Fonts : public ExampleBase
 
  // Draw number of frames per second (FPS)
  DrawFont(
- "FPS = " + std::to_string(displayNumbers.fps),
+ "FPS = " + std::to_string(displayNumbers.averageFPS),
  screenWidth - paragraphMargin, paragraphPosY, colorRed,
  fontFlags | DrawRightAligned
  );