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Bug 1281105 - Disable GLX vsync when using the basic compositor. r=jrmuizel

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MozReview-Commit-ID: HNvcCUbleMw

--HG--
extra : rebase_source : 335caeb57b9c05115156f4d56fe23c373335a30c
This commit is contained in:
Andrew Comminos 2016-06-21 15:51:34 -04:00
parent 2774c95a66
commit 7ff309ea95
1 changed files with 14 additions and 8 deletions
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22
gfx/thebes/gfxPlatformGtk.cpp
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@ -15,6 +15,7 @@
#include "gfxFcPlatformFontList.h"
#include "gfxFontconfigUtils.h"
#include "gfxFontconfigFonts.h"
#include "gfxConfig.h"
#include "gfxContext.h"
#include "gfxUserFontSet.h"
#include "gfxUtils.h"
@ -839,16 +840,21 @@ private:
already_AddRefed<gfx::VsyncSource>
gfxPlatformGtk::CreateHardwareVsyncSource()
{
if (gl::sGLXLibrary.SupportsVideoSync()) {
RefPtr<VsyncSource> vsyncSource = new GLXVsyncSource();
VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
if (!static_cast<GLXVsyncSource::GLXDisplay&>(display).Setup()) {
NS_WARNING("Failed to setup GLContext, falling back to software vsync.");
return gfxPlatform::CreateHardwareVsyncSource();
// Only use GLX vsync when the OpenGL compositor is being used.
// The extra cost of initializing a GLX context while blocking the main
// thread is not worth it when using basic composition.
if (gfxConfig::IsEnabled(Feature::HW_COMPOSITING)) {
if (gl::sGLXLibrary.SupportsVideoSync()) {
RefPtr<VsyncSource> vsyncSource = new GLXVsyncSource();
VsyncSource::Display& display = vsyncSource->GetGlobalDisplay();
if (!static_cast<GLXVsyncSource::GLXDisplay&>(display).Setup()) {
NS_WARNING("Failed to setup GLContext, falling back to software vsync.");
return gfxPlatform::CreateHardwareVsyncSource();
}
return vsyncSource.forget();
}
return vsyncSource.forget();
NS_WARNING("SGI_video_sync unsupported. Falling back to software vsync.");
}
NS_WARNING("SGI_video_sync unsupported. Falling back to software vsync.");
return gfxPlatform::CreateHardwareVsyncSource();
}