# Maintainer: Saren Arterius <saren@wtako.net>
# Maintainer: Térence Clastres <t.clastres@gmail.com>

# Maintainer: Jan Alexander Steffens (heftig) <jan.steffens@gmail.com>
# Maintainer: Ionut Biru <ibiru@archlinux.org>
# Contributor: Michael Kanis <mkanis_at_gmx_dot_de>

pkgname=mutter-performance
pkgver=3.32.2+43+gb7f158811
pkgrel=19
pkgdesc="A window manager for GNOME | Attempts to improve performances with non-upstreamed merge-requests and frequent stable branch resync"
url="https://gitlab.gnome.org/GNOME/mutter"
arch=(x86_64)
license=(GPL)
depends=(dconf gobject-introspection-runtime gsettings-desktop-schemas libcanberra
         startup-notification zenity libsm gnome-desktop upower libxkbcommon-x11
         gnome-settings-daemon libgudev libinput pipewire xorg-server-xwayland gnome-shell)
makedepends=(gobject-introspection git egl-wayland meson xorg-server)
checkdepends=(xorg-server-xvfb)
options=(debug !strip)
provides=(mutter mutter-781835-workaround)
conflicts=(mutter)
replaces=(mutter-781835-workaround)
groups=(gnome)
_commit=b7f158811934d8e4d9dd0be28ad8e1746ceac46c # tags/3.32.2^43
source=("$pkgname::git+https://gitlab.gnome.org/GNOME/mutter.git#commit=$_commit"
	429.diff
	724.diff
	189.diff)
sha256sums=('SKIP'
            'c22bc32ab8a29e3da986f386d14a8376f1985c051328ca6786571b4b67ec9e48'
            '3bfd673cbae598f6482124525d342b4323a1395a0f72d6532bbcf34f66773213'
            '95e29ca135a024ad2fab6d0b4d8d6674699a95e6df91f4ca9e0437a475459d87')

pkgver() {
  cd $pkgname
  git describe --tags | sed 's/-/+/g'
}

hash_of() {
  git log --oneline --all | grep "$1" | tail -n 1 | awk '{print $1}'
}

git_cp_by_msg() {
  # Comment: Saren found a way to fetch hash based on commit name. It's controversial but might be interesting to create a function to call for each MR to not have to update the hash at each rebase.
  h_first=$(hash_of "$2")
  if [[ -n "$3" ]]; then
    h_last=$(hash_of "$3")
    echo "Found $h_first^$h_last for $1"
    git cherry-pick -n -Xtheirs $h_first^..$h_last
  else
    echo "Found $h_first for $1"
    git cherry-pick -n -Xtheirs $h_first
  fi
}

prepare() {
  cd $pkgname

  ### Adding and fetching remotes providing the selected merge-requests

  git cherry-pick --abort || true
  git remote add vanvugt https://gitlab.gnome.org/vanvugt/mutter.git || true
  git fetch vanvugt


  ### Merge Requests

  # Merge Request Prototype
  # Title:
  # URL:
  # Type:
  # Status:
  # Comment:
  # git cherry-pick -n first_commit^..last_commit
  #
  # Possible Status:
  #   1. Needs rebase: Conflicts with master branch.
  #   2. Needs review: Mutter maintainers needs to review the new/updated MR and provide feedback.
  #   3. Needs changes: MR needs to be adjusted based on maintainers feedback.
  #   4. Merged: MR approved and it changes commited to master.
  #
  # Generally, a MR status oscillate between 2 and 3 and then becomes 4.
  #
  # Possible Type:
  #   1. Improvement: Makes an already existing feature behave better, more efficiently/reliably.
  #   2. Feature: Adds a new functionality.
  #   3. Fix: Regression/bug fix only available in master (not backported).
  #   4. Cleanup: Code styling improvement, function deprecation, rearrangement...



  # Title: Various Clutter cleanups
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/666
  # Type: 4
  # Status: 4
  # Comment: Needed so !189 doesn't conflict
  git cherry-pick -n 5bd85ef7^..b0b1ff36

  # Title: Minor clutter stage cleanup
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/616
  # Type: 4
  # Status: 4
  # Comment: Needed so !661 doesn't conflict
  git cherry-pick -n 4064d9a7^..3073acc3

  # Title: Geometric (OpenGL-less) picking
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/189
  # Type: 1
  # Status: 2
  # Comment:
  patch -Np1 < ../189.diff
  git add .

  # Title: clutter/stage-cogl: Don't skip over the next frame
  # URL : https://gitlab.gnome.org/GNOME/mutter/merge_requests/520
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 45244852

  # Title: Consolidate all frame throttling into clutter-stage-cogl
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/363
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 912a9ecf^..1dbf25af

  # Title: clutter/stage-cogl: Reschedule update on present
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/281
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 4faeb127

  # Title: clutter/stage: Only queue compressible events
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/711
  # Type: 1
  # Status: 2
  # Comment: Replaces !168
  git_cp_by_msg '!711' 'clutter/device-manager-evdev: Update device modifiers before queuing' 'clutter/stage: Only queue compressible events'

  # Title: Resource scale computation optimizations
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/493
  # Type: 1
  # Status: 3
  # Comment: Disabled because breaks the overview on Wayland. https://gitlab.gnome.org/GNOME/mutter/merge_requests/493#note_549833
  if [ -f "$HOME/.i_dont_use_wayland_on_gnome" ]; then
    echo "OK, you dont use wayland on gnome"
    git cherry-pick -n 3aa449af^..1017ce44
  fi

  # Title: clutter: Defer actor allocations till shown
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/677
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 0eab73dc

  # Title: Honour `CLUTTER_ACTOR_NO_LAYOUT` more efficiently
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/575
  # Type: 1
  # Status: 2
  git_cp_by_msg '!575' 'clutter/stage: Add an API for shallow relayouts' 'clutter/actor: Use the new shallow relayout API'

  # Title: cogl: Remove GLX "threaded swap wait" used on Nvidia
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/602
  # Type: 1
  # Status: 2
  # Comment: Makes the shell unresponsive to most of the interactions with mouse and keyboard
  # git_cp_by_msg '!602' 'cogl: Remove GLX "threaded swap wait" used on Nvidia'
  # git cherry-pick -n -Xtheirs df38ad3c

  # Title: compositor: Don't emit size-changed when only position changes
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/568
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 01e20a6b

  # Title: cogl: Enable EGL_IMG_context_priority
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/454
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 3f29b478^..7df86fb2

  # Title: Add experimental key for RT scheduling
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/460
  # Type: 1
  # Status: 4
  # Comment: Only works in Wayland
  git cherry-pick -n dae2c1d4

  # Title: backends: Do not reload keymap on new keyboard notifications
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/579
  # Type: 1
  # Status: 4
  # Comment: Disabled by default because it has issues when using multiple layouts
  if [ -f "$HOME/.i_dont_use_multiple_keyboard_layouts" ]; then
    echo "OK, you dont use multiple keyboard layouts"
    git cherry-pick -n b01edc22
  fi

  # Title: Fix background texture corruption when resuming from suspend on Nvidia
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/600
  # Type: 2
  # Status: 4
  # Comment:
  git cherry-pick -n a5265365

  # Title: WIP: renderer-native: Accept frames without ever blocking
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/73
  # Type: 1
  # Status: 1
  # Comment: Might be replaced: https://gitlab.gnome.org/GNOME/mutter/merge_requests/73#note_544784
  # git cherry-pick -n 35ec0eaf^..202530c9

  # Title: clutter: Force an allocation on clone source if necessary
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/693
  # Type: 3
  # Status: 4
  # Comment: Sometimes produces artefacts in the application grid: https://gitlab.gnome.org/GNOME/mutter/merge_requests/693#note_566491
  #git cherry-pick -n 08a3cbfc

  # Title: core: Only trigger MetaWorkspace::window-* on toplevel window types
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/701
  # Type: 1
  # Status: 2
  # Comment:
  git cherry-pick -n d7f799bf

  # Title: Make MetaCullable implementations more thorough wrt painted areas
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/698
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n 2812338b^..f501fdcc

  #Title: window-actor: Fix rectangle coordinates in culling
  #URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/707
  #Type: 3
  #Status: 4
  #Comment: Fix for !698
  git cherry-pick -n aae9f3a3

  # Title: clutter-stage-cogl: Use regions
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/692
  # Type: 1
  # Status: 1
  # Comment:
  #git cherry-pick -n f2694e72^..d0edf91c

  # Title: clutter/stage: Update input devices right after doing a relayout
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/429
  # Type: 1
  # Status: 2
  # Comment: Can't be cleanly applied on 3.32 without lot of cherry-pick unrelated commits...
  patch -Np1 < ../429.diff
  git add clutter/clutter/*.{c,h}

  # Title: Implement clipboard manager
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/320
  # Type: 2
  # Status: 4
  # Comment: crashes in wayland session when trying to drag a folder/file in nautilus or a tab in firefox
  # git cherry-pick -n 156980ef^..02c99524

  # Title: renderer-native: Reference count front buffers.
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/119
  # Type: 2
  # Status: 4
  # Comment: Needed for !719 to behave well
  git cherry-pick -n fecc57dd

  # Title: Remove pending_swaps counter
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/719
  # Type: 1
  # Status: 2
  # Comment:
  git_cp_by_msg '!719' 'clutter/stage-cogl: Remove pending_swaps counter'

  # Title: clutter: Use va_marshallers for actor signals
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/700
  # Type: 1
  # Status: 4
  # Comment:
  git cherry-pick -n c4a9117e^..9d65eab5 -Xours

  # Title: Sync timelines to hardware vsync
  # URL: https://gitlab.gnome.org/GNOME/mutter/merge_requests/724
  # Type: 1
  # Status: 2
  # Comment:
  patch -Np1 < ../724.diff
}

build() {
  arch-meson $pkgname build \
    -D egl_device=true \
    -D wayland_eglstream=true \
    -D installed_tests=false
  ninja -C build
}

package() {
  DESTDIR="$pkgdir" meson install -C build
}