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Win32: Bypass composition check on Windows 8+

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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.
This commit is contained in:
Cliff Smolinsky 2019-03-19 09:22:59 -07:00 committed by Camilla Löwy
parent 297999c9e1
commit 87458617e0
1 changed files with 8 additions and 4 deletions
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12
src/wgl_context.c
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@ -321,10 +321,12 @@ static void swapBuffersWGL(_GLFWwindow* window)
{ {
if (IsWindowsVistaOrGreater()) if (IsWindowsVistaOrGreater())
{ {
BOOL enabled; // DWM Composition is always enabled on Win8+
BOOL enabled = IsWindows8OrGreater();
// HACK: Use DwmFlush when desktop composition is enabled // HACK: Use DwmFlush when desktop composition is enabled
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled) if (enabled ||
(SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
{ {
int count = abs(window->context.wgl.interval); int count = abs(window->context.wgl.interval);
while (count--) while (count--)
@ -346,11 +348,13 @@ static void swapIntervalWGL(int interval)
{ {
if (IsWindowsVistaOrGreater()) if (IsWindowsVistaOrGreater())
{ {
BOOL enabled; // DWM Composition is always enabled on Win8+
BOOL enabled = IsWindows8OrGreater();
// HACK: Disable WGL swap interval when desktop composition is enabled to // HACK: Disable WGL swap interval when desktop composition is enabled to
// avoid interfering with DWM vsync // avoid interfering with DWM vsync
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled) if (enabled ||
(SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled))
interval = 0; interval = 0;
} }
} }