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Win32: Bypass composition check on Windows 8+
DWM composition is always enabled on Windows 8 and later, so there's no need to call DwmIsCompositionEnabled on those platforms. Fixes #1452. Closes #1453.
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@ -321,10 +321,12 @@ static void swapBuffersWGL(_GLFWwindow* window)
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{
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if (IsWindowsVistaOrGreater())
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{
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BOOL enabled;
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// DWM Composition is always enabled on Win8+
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BOOL enabled = IsWindows8OrGreater();
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// HACK: Use DwmFlush when desktop composition is enabled
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if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
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if (enabled ||
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(SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
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{
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int count = abs(window->context.wgl.interval);
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while (count--)
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@ -346,11 +348,13 @@ static void swapIntervalWGL(int interval)
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{
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if (IsWindowsVistaOrGreater())
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{
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BOOL enabled;
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// DWM Composition is always enabled on Win8+
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BOOL enabled = IsWindows8OrGreater();
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// HACK: Disable WGL swap interval when desktop composition is enabled to
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// avoid interfering with DWM vsync
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if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
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if (enabled ||
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(SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
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interval = 0;
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}
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}
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