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diff -up firefox-67.0/widget/gtk/WindowSurfaceWayland.cpp.old firefox-67.0/widget/gtk/WindowSurfaceWayland.cpp
--- firefox-67.0/widget/gtk/WindowSurfaceWayland.cpp.old 2019-05-23 09:57:11.794580879 +0200
+++ firefox-67.0/widget/gtk/WindowSurfaceWayland.cpp 2019-05-23 10:05:15.505606976 +0200
@@ -416,7 +416,7 @@ WindowSurfaceWayland::~WindowSurfaceWayl
}
WindowBackBuffer* WindowSurfaceWayland::GetWaylandBufferToDraw(int aWidth,
- int aHeight) {
+ int aHeight, bool aFullScreenUpdate) {
if (!mWaylandBuffer) {
LOGWAYLAND(("%s [%p] Create [%d x %d]\n", __PRETTY_FUNCTION__, (void*)this,
aWidth, aHeight));
@@ -473,8 +473,10 @@ WindowBackBuffer* WindowSurfaceWayland::
(void*)this, aWidth, aHeight));
// Former front buffer has the same size as a requested one.
// Gecko may expect a content already drawn on screen so copy
- // existing data to the new buffer.
- mWaylandBuffer->SetImageDataFromBuffer(lastWaylandBuffer);
+ // existing data to the new buffer if we don't do fullscreen redraw.
+ if (!aFullScreenUpdate) {
+ mWaylandBuffer->SetImageDataFromBuffer(lastWaylandBuffer);
+ }
// When buffer switches we need to damage whole screen
// (https://bugzilla.redhat.com/show_bug.cgi?id=1418260)
mWaylandBufferFullScreenDamage = true;
@@ -491,8 +493,9 @@ WindowBackBuffer* WindowSurfaceWayland::
}
already_AddRefed<gfx::DrawTarget> WindowSurfaceWayland::LockWaylandBuffer(
- int aWidth, int aHeight, bool aClearBuffer) {
- WindowBackBuffer* buffer = GetWaylandBufferToDraw(aWidth, aHeight);
+ int aWidth, int aHeight, bool aClearBuffer, bool aFullScreenUpdate) {
+ WindowBackBuffer* buffer = GetWaylandBufferToDraw(aWidth, aHeight,
+ aFullScreenUpdate);
if (!buffer) {
NS_WARNING(
"WindowSurfaceWayland::LockWaylandBuffer(): No buffer available");
@@ -557,7 +560,7 @@ already_AddRefed<gfx::DrawTarget> Window
if (mDrawToWaylandBufferDirectly) {
RefPtr<gfx::DrawTarget> dt =
LockWaylandBuffer(screenRect.width, screenRect.height,
- mWindow->WaylandSurfaceNeedsClear());
+ mWindow->WaylandSurfaceNeedsClear(), true);
if (dt) {
// When we have a request to update whole screen at once
// (surface was created, resized or changed somehow)
@@ -590,7 +593,8 @@ bool WindowSurfaceWayland::CommitImageSu
}
RefPtr<gfx::DrawTarget> dt = LockWaylandBuffer(
- screenRect.width, screenRect.height, mWindow->WaylandSurfaceNeedsClear());
+ screenRect.width, screenRect.height, mWindow->WaylandSurfaceNeedsClear(),
+ false);
RefPtr<gfx::SourceSurface> surf =
gfx::Factory::CreateSourceSurfaceForCairoSurface(
mImageSurface->CairoSurface(), mImageSurface->GetSize(),
diff -up firefox-67.0/widget/gtk/WindowSurfaceWayland.h.old firefox-67.0/widget/gtk/WindowSurfaceWayland.h
--- firefox-67.0/widget/gtk/WindowSurfaceWayland.h.old 2019-05-23 09:57:16.208572833 +0200
+++ firefox-67.0/widget/gtk/WindowSurfaceWayland.h 2019-05-23 09:58:34.497430120 +0200
@@ -96,7 +96,7 @@ class WindowSurfaceWayland : public Wind
WindowBackBuffer* GetWaylandBufferToDraw(int aWidth, int aHeight);
already_AddRefed<gfx::DrawTarget> LockWaylandBuffer(int aWidth, int aHeight,
- bool aClearBuffer);
+ bool aClearBuffer, bool aFullScreenUpdate);
already_AddRefed<gfx::DrawTarget> LockImageSurface(
const gfx::IntSize& aLockSize);
bool CommitImageSurfaceToWaylandBuffer(const LayoutDeviceIntRegion& aRegion);
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