Remove DwmFlush()

docs/source/about/advanced_usage.rst

@@ -413,27 +413,6 @@ resolutions
         3840x1600,
       ]
 
-dwmflush
-^^^^^^^^
-
-**Description**
-   Invoke DwmFlush() to sync screen capture to the Windows presentation interval.
-
-   .. Caution:: Applies to Windows only. Alleviates visual stuttering during mouse movement.
-      If enabled, this feature will automatically deactivate if the client framerate exceeds
-      the host monitor's current refresh rate.
-
-   .. Note:: If you disable this option, you may see video stuttering during mouse movement in certain scenarios.
-      It is recommended to leave enabled when possible.
-
-**Default**
-   ``enabled``
-
-**Example**
-   .. code-block:: text
-
-      dwmflush = enabled
-
 Audio
 -----
 

src/config.cpp

@@ -438,7 +438,6 @@ namespace config {
     {},  // encoder
     {},  // adapter_name
     {},  // output_name
-    true  // dwmflush
   };
 
   audio_t audio {
@@ -1034,7 +1033,6 @@ namespace config {
     string_f(vars, "encoder", video.encoder);
     string_f(vars, "adapter_name", video.adapter_name);
     string_f(vars, "output_name", video.output_name);
-    bool_f(vars, "dwmflush", video.dwmflush);
 
     path_f(vars, "pkey", nvhttp.pkey);
     path_f(vars, "cert", nvhttp.cert);

src/config.h

@@ -64,7 +64,6 @@ namespace config {
     std::string encoder;
     std::string adapter_name;
     std::string output_name;
-    bool dwmflush;
   };
 
   struct audio_t {

src/platform/windows/display.h

@@ -109,7 +109,6 @@ namespace platf::dxgi {
   public:
     dup_t dup;
     bool has_frame {};
-    bool use_dwmflush {};
     std::chrono::steady_clock::time_point last_protected_content_warning_time {};
 
     capture_e

src/platform/windows/display_base.cpp

@@ -32,10 +32,6 @@ namespace platf::dxgi {
       return capture_status;
     }
 
-    if (use_dwmflush) {
-      DwmFlush();
-    }
-
     auto status = dup->AcquireNextFrame(timeout.count(), &frame_info, res_p);
 
     switch (status) {
@@ -470,21 +466,6 @@ namespace platf::dxgi {
       << "Offset             : "sv << offset_x << 'x' << offset_y << std::endl
       << "Virtual Desktop    : "sv << env_width << 'x' << env_height;
 
-    // Enable DwmFlush() only if the current refresh rate can match the client framerate.
-    auto refresh_rate = config.framerate;
-    DWM_TIMING_INFO timing_info;
-    timing_info.cbSize = sizeof(timing_info);
-
-    status = DwmGetCompositionTimingInfo(NULL, &timing_info);
-    if (FAILED(status)) {
-      BOOST_LOG(warning) << "Failed to detect active refresh rate.";
-    }
-    else {
-      refresh_rate = std::round((double) timing_info.rateRefresh.uiNumerator / (double) timing_info.rateRefresh.uiDenominator);
-    }
-
-    dup.use_dwmflush = config::video.dwmflush && !(config.framerate > refresh_rate) ? true : false;
-
     // Bump up thread priority
     {
       const DWORD flags = TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY;

src_assets/common/assets/web/config.html

@@ -582,18 +582,6 @@
           tools\dxgi-info.exe<br />
         </div>
       </div>
-      <!--DwmFlush-->
-      <div class="mb-3" v-if="platform === 'windows'">
-        <label for="dwmflush" class="form-label">DwmFlush</label>
-        <select id="dwmflush" class="form-select" v-model="config.dwmflush">
-          <option value="disabled">Disabled</option>
-          <option value="enabled">Enabled</option>
-        </select>
-        <div class="form-text">
-          Improves capture latency/smoothness during mouse movement.<br />
-          Disable if you encounter any VSync-related issues.
-        </div>
-      </div>
       <div class="mb-3" v-if="platform === 'linux'">
         <label for="output_name" class="form-label">Monitor number</label>
         <input