fix high refresh capture

(cherry picked from commit 9b7a12a)

Author: mausimus

ShaderGlass/CaptureSession.cpp

@@ -112,11 +112,11 @@ void CaptureSession::ProcessInput()
 {
     if(m_inputImage.get())
     {
-        m_shaderGlass.Process(m_inputImage, 0);
+        m_shaderGlass.Process(m_inputImage, 0, 1);
     }
     else
     {
-        m_shaderGlass.Process(m_inputFrame, m_frameTicks);
+        m_shaderGlass.Process(m_inputFrame, m_frameTicks, m_numInputFrames);
     }
 }
 

ShaderGlass/ShaderGlass.cpp

@@ -393,14 +393,14 @@ void ShaderGlass::PresentFrame()
     PostMessage(m_outputWindow, WM_PAINT, 0, 0); // necessary for click-through
 }
 
-void ShaderGlass::Process(winrt::com_ptr<ID3D11Texture2D> texture, ULONGLONG frameTicks)
+void ShaderGlass::Process(winrt::com_ptr<ID3D11Texture2D> texture, ULONGLONG frameTicks, int inputFrameNo)
 {
     auto nowTicks            = GetTickCount64();
     auto timeSinceLastRender = nowTicks - m_prevRenderTicks;
     auto logicalFrameNo      = (int)roundf((nowTicks - m_startTicks) / 16.6666666f); // fix shaders at 60 fps
 
     // same input
-    if(frameTicks == m_prevFrameTicks)
+    if(inputFrameNo == m_prevInputFrameNo)
     {
         if(logicalFrameNo == m_prevLogicalFrameNo)
             return;
@@ -421,6 +421,7 @@ void ShaderGlass::Process(winrt::com_ptr<ID3D11Texture2D> texture, ULONGLONG fra
 
     m_frameCounter++;
     m_prevFrameTicks     = frameTicks;
+    m_prevInputFrameNo   = inputFrameNo;
     m_prevLogicalFrameNo = logicalFrameNo;
 
     if(!m_running || !texture)

ShaderGlass/ShaderGlass.h

@@ -27,7 +27,7 @@ class ShaderGlass
                      bool                                allowTearing,
                      winrt::com_ptr<ID3D11Device>        device,
                      winrt::com_ptr<ID3D11DeviceContext> context);
-    void  Process(winrt::com_ptr<ID3D11Texture2D> texture, ULONGLONG frameTicks);
+    void  Process(winrt::com_ptr<ID3D11Texture2D> texture, ULONGLONG frameTicks, int inputFrameNo);
     void  SetInputScale(float w, float h);
     void  SetOutputScale(float w, float h);
     void  SetOutputFlip(bool h, bool v);
@@ -93,6 +93,7 @@ class ShaderGlass
     ULONGLONG  m_prevRenderTicks {0};
     ULONGLONG  m_prevTicks {0};
     ULONGLONG  m_prevFrameTicks {0};
+    int        m_prevInputFrameNo {0};
     int        m_prevLogicalFrameNo {0};
     float      m_fps {0};
     bool       m_requiresFeedback {false};