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platform/windows: add optional DwmFlush() call to improve Windows capture

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Invoke DwmFlush() before acquiring the next frame to alleviate visual stutter
during mouse movement at the cost of constraining the capture rate to the host's
monitor refresh.

Disabled by default; enable via "dwmflush" boolean configuration parameter.
This commit is contained in:
Conn O'Griofa 2022-05-18 18:20:33 +01:00
commit 211b25848f
7 changed files with 45 additions and 5 deletions
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14
src_assets/common/assets/web/config.html
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@ -400,7 +400,18 @@
You can select the video card you want to stream:<br />
The appropriate values can be found using the following command:<br />
tools\dxgi-info.exe<br />
<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 during mouse movement.<br />
Enabling this may prevent the client's FPS from exceeding the host monitor's active refresh rate.
</div>
</div>
<div class="mb-3" class="config-page" v-if="platform === 'linux'">
@ -832,6 +843,7 @@
this.config.key_rightalt_to_key_win || "disabled";
this.config.gamepad = this.config.gamepad || "x360";
this.config.upnp = this.config.upnp || "disabled";
this.config.dwmflush = this.config.dwmflush || "disabled";
this.config.min_log_level = this.config.min_log_level || 2;
this.config.origin_pin_allowed =
this.config.origin_pin_allowed || "pc";