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Let userland retain the window backing store while drawing into it.

To start painting, call:
gui$get_window_backing_store()

Then finish up with:
gui$release_window_backing_store()

Process will retain the underlying GraphicsBitmap behind the scenes.
This fixes racing between the WindowServer and GUI clients.

This patch also adds a WSWindowLocker that is exactly what it sounds like.
This commit is contained in:
Andreas Kling 2019-01-24 23:40:12 +01:00
parent ccf3fc4618
commit 86eae0f8df
22 changed files with 244 additions and 102 deletions

View file

@ -34,6 +34,7 @@ struct GUI_WindowParameters {
};
struct GUI_WindowBackingStoreInfo {
void* backing_store_id;
GUI_Size size;
size_t bpp;
size_t pitch;