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Wayland: Fix cursor offset when shape changes

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The Wayland protocol spec[1] states that set_cursor must be called
with the serial number of the enter event.  However, GLFW is passing in
the serial number of the latest received event, which does not meet the
protocol spec.

[1] https://wayland.freedesktop.org/docs/html/apa.html#protocol-spec-wl_pointer

As a result, set_cursor calls were simply ignored by the compositor.

This fix complies with the protocol more closely by specifically caching
the enter event serial, and using it for all set_cursor calls.

Fixes #1706
Closes #1899

(cherry picked from commit e7758c506d)
This commit is contained in:
Waris Boonyasiriwat 2021-05-12 00:30:14 -07:00 committed by Camilla Löwy
parent 33ff23dc07
commit 6bb5f5d59d
4 changed files with 9 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
README.md
View File

@ -128,6 +128,7 @@ information on what to include when reporting a bug.
related events were emitted
- [X11] Bugfix: Changing `GLFW_FLOATING` could leak memory
- [Wayland] Bugfix: Some keys were not repeating in Wayland (#1908)
- [Wayland] Bugfix: Non-arrow cursors are offset from the hotspot (#1706,#1899)
- [NSGL] Bugfix: Defining `GL_SILENCE_DEPRECATION` externally caused
a duplicate definition warning (#1840)
- [EGL] Bugfix: The `GLFW_DOUBLEBUFFER` context attribute was ignored (#1843)
@ -170,6 +171,7 @@ skills.
- Denis Bernard
- Doug Binks
- blanco
- Waris Boonyasiriwat
- Kyle Brenneman
- Rok Breulj
- Kai Burjack
@ -178,6 +180,7 @@ skills.
- David Carlier
- Arturo Castro
- Chi-kwan Chan
- Joseph Chua
- Ian Clarkson
- Michał Cichoń
- Lambert Clara
@ -349,7 +352,6 @@ skills.
- Torsten Walluhn
- Patrick Walton
- Xo Wang
- Waris
- Jay Weisskopf
- Frank Wille
- Richard A. Wilkes

3
src/wl_init.c
View File

@ -104,6 +104,7 @@ static void pointerHandleEnter(void* data,
window->wl.decorations.focus = focus;
_glfw.wl.serial = serial;
_glfw.wl.pointerEnterSerial = serial;
_glfw.wl.pointerFocus = window;
window->wl.hovered = GLFW_TRUE;
@ -163,7 +164,7 @@ static void setCursor(_GLFWwindow* window, const char* name)
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
surface,
image->hotspot_x / scale,
image->hotspot_y / scale);

1
src/wl_platform.h
View File

@ -252,6 +252,7 @@ typedef struct _GLFWlibraryWayland
const char* cursorPreviousName;
int cursorTimerfd;
uint32_t serial;
uint32_t pointerEnterSerial;
int32_t keyboardRepeatRate;
int32_t keyboardRepeatDelay;

6
src/wl_window.c
View File

@ -796,7 +796,7 @@ static void setCursorImage(_GLFWwindow* window,
cursorWayland->yhot = image->hotspot_y;
}
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
surface,
cursorWayland->xhot / scale,
cursorWayland->yhot / scale);
@ -1547,7 +1547,7 @@ static void lockPointer(_GLFWwindow* window)
window->wl.pointerLock.relativePointer = relativePointer;
window->wl.pointerLock.lockedPointer = lockedPointer;
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial,
NULL, 0, 0);
}
@ -1611,7 +1611,7 @@ void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
}
else if (window->cursorMode == GLFW_CURSOR_HIDDEN)
{
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial, NULL, 0, 0);
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerEnterSerial, NULL, 0, 0);
}
}