Remove targetFrameTime / Limiter

lib/graphicsdev/Common.cpp

@@ -15,26 +15,4 @@ void UpdateGammaLUT(ITextureD* tex, float gamma) {
   tex->unmap();
 }
 
-void Limiter::Sleep(nanotime_t targetFrameTime) {
-  OPTICK_EVENT();
-  if (targetFrameTime == 0) {
-    return;
-  }
-
-  auto start = delta_clock::now();
-  nanotime_t sleepTime = targetFrameTime - TimeSince(m_oldTime);
-  m_overhead = std::accumulate(m_overheadTimes.begin(), m_overheadTimes.end(), nanotime_t{}) /
-               static_cast<nanotime_t>(m_overheadTimes.size());
-  if (sleepTime > m_overhead) {
-    nanotime_t adjustedSleepTime = sleepTime - m_overhead;
-    std::this_thread::sleep_for(std::chrono::nanoseconds(adjustedSleepTime));
-    nanotime_t overslept = TimeSince(start) - adjustedSleepTime;
-    if (overslept < targetFrameTime) {
-      m_overheadTimes[m_overheadTimeIdx] = overslept;
-      m_overheadTimeIdx = (m_overheadTimeIdx + 1) % m_overheadTimes.size();
-    }
-  }
-  m_oldTime = delta_clock::now();
-}
-
 } // namespace boo

lib/graphicsdev/Common.hpp

@@ -285,22 +285,4 @@ public:
 #define SCOPED_GRAPHICS_DEBUG_GROUP(_, name, ...) OPTICK_EVENT(name)
 #endif
 
-class Limiter {
-  using delta_clock = std::chrono::steady_clock;
-  using nanotime_t = std::chrono::nanoseconds::rep;
-
-public:
-  void Sleep(nanotime_t targetFrameTimeNs);
-
-private:
-  delta_clock::time_point m_oldTime;
-  std::array<nanotime_t, 4> m_overheadTimes{};
-  size_t m_overheadTimeIdx = 0;
-  nanotime_t m_overhead = 0;
-
-  nanotime_t TimeSince(delta_clock::time_point start) {
-    return std::chrono::duration_cast<std::chrono::nanoseconds>(delta_clock::now() - start).count();
-  }
-};
-
 } // namespace boo

lib/graphicsdev/Vulkan.cpp

@@ -2883,8 +2883,6 @@ struct VulkanCommandQueue final : IGraphicsCommandQueue {
 
   std::vector<boo::ObjToken<boo::IObj>> m_drawResTokens[2];
 
-  Limiter m_frameLimiter;
-
   void resetCommandBuffer() {
     ThrowIfFailed(vk::ResetCommandBuffer(m_cmdBufs[m_fillBuf], 0));
     VkCommandBufferBeginInfo cmdBufBeginInfo = {};
@@ -4163,7 +4161,6 @@ void VulkanCommandQueue::execute() {
     } else {
       ThrowIfFailed(res);
     }
-    m_frameLimiter.Sleep(m_ctx->m_targetFrameTime);
   }
 
   resetCommandBuffer();