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yshui / picom

A lightweight compositor for X11 with animation support
https://picom.app/
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FPS drops when scrolling in monocle layout with Picom #1092

Open watermelonoof opened 1 year ago

watermelonoof commented 1 year ago

Platform

Arch Linux x86_64

GPU, drivers, and screen setup

Intel UHD 620 Graphics NVIDIA GeForce MX250, nvidia-drivers 535.54.03-3, single monitor

xf86-video-intel 1:2.99.917+923+gb74b67f0-1 mesa 23.1.3-1

Output of glxinfo -B

name of display: :0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: Intel (0x8086)
    Device: Mesa Intel(R) UHD Graphics 620 (WHL GT2) (0x3ea0)
    Version: 23.1.3
    Accelerated: yes
    Video memory: 7752MB
    Unified memory: yes
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (WHL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 23.1.3
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 23.1.3
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.1.3
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

Environment

WM: dwm

picom version

vgit-4e6dd

Diagnostics **Version:** vgit-4e6dd ### Extensions: * Shape: Yes * RandR: Yes * Present: Present ### Misc: * Use Overlay: No (Another compositor is already running) * Config file used: /home/bryan/.config/picom/picom.conf ### Drivers (inaccurate): Intel ### Backend: glx * Driver vendors: * GLX: Mesa Project and SGI * GL: Intel * GL renderer: Mesa Intel(R) UHD Graphics 620 (WHL GT2) * Accelerated: 1 ### Backend: egl * Driver vendors: * EGL: Mesa Project * EGL driver: iris * GL: Intel * GL renderer: Mesa Intel(R) UHD Graphics 620 (WHL GT2)

Configuration:

Configuration file ``` ################################# # Shadows # ################################# # Enabled client-side shadows on windows. Note desktop windows # (windows with '_NET_WM_WINDOW_TYPE_DESKTOP') never get shadow, # unless explicitly requested using the wintypes option. # # shadow = false shadow = false; # The blur radius for shadows, in pixels. (defaults to 12) # shadow-radius = 12 shadow-radius = 7; # The opacity of shadows. (0.0 - 1.0, defaults to 0.75) # shadow-opacity = .75 # The left offset for shadows, in pixels. (defaults to -15) # shadow-offset-x = -15 shadow-offset-x = -7; # The top offset for shadows, in pixels. (defaults to -15) # shadow-offset-y = -15 shadow-offset-y = -7; # Red color value of shadow (0.0 - 1.0, defaults to 0). # shadow-red = 0 # Green color value of shadow (0.0 - 1.0, defaults to 0). # shadow-green = 0 # Blue color value of shadow (0.0 - 1.0, defaults to 0). # shadow-blue = 0 # Hex string color value of shadow (#000000 - #FFFFFF, defaults to #000000). This option will override options set shadow-(red/green/blue) # shadow-color = "#000000" # Specify a list of conditions of windows that should have no shadow. # # examples: # shadow-exclude = "n:e:Notification"; # # shadow-exclude = [] shadow-exclude = [ "name = 'Notification'", "class_g = 'Conky'", "class_g ?= 'Notify-osd'", "class_g = 'Cairo-clock'", "_GTK_FRAME_EXTENTS@:c" ]; # Specify a list of conditions of windows that should have no shadow painted over, such as a dock window. # clip-shadow-above = [] # Specify a X geometry that describes the region in which shadow should not # be painted in, such as a dock window region. Use # shadow-exclude-reg = "x10+0+0" # for example, if the 10 pixels on the bottom of the screen should not have shadows painted on. # # shadow-exclude-reg = "" # Crop shadow of a window fully on a particular monitor to that monitor. This is # currently implemented using the X RandR extension. # crop-shadow-to-monitor = false ################################# # Fading # ################################# # Fade windows in/out when opening/closing and when opacity changes, # unless no-fading-openclose is used. # fading = false fading = true; # Opacity change between steps while fading in. (0.01 - 1.0, defaults to 0.028) # fade-in-step = 0.028 fade-in-step = 0.03; # Opacity change between steps while fading out. (0.01 - 1.0, defaults to 0.03) # fade-out-step = 0.03 fade-out-step = 0.03; # The time between steps in fade step, in milliseconds. (> 0, defaults to 10) # fade-delta = 10 # Specify a list of conditions of windows that should not be faded. # fade-exclude = [] # Do not fade on window open/close. # no-fading-openclose = false # Do not fade destroyed ARGB windows with WM frame. Workaround of bugs in Openbox, Fluxbox, etc. # no-fading-destroyed-argb = false ################################# # Transparency / Opacity # ################################# # Opacity of inactive windows. (0.1 - 1.0, defaults to 1.0) # inactive-opacity = 1 inactive-opacity = 0.85; # Opacity of window titlebars and borders. (0.1 - 1.0, disabled by default) # frame-opacity = 1.0 frame-opacity = 0.85; # Let inactive opacity set by -i override the '_NET_WM_WINDOW_OPACITY' values of windows. # inactive-opacity-override = true inactive-opacity-override = false; # Default opacity for active windows. (0.0 - 1.0, defaults to 1.0) # active-opacity = 0.9 # Dim inactive windows. (0.0 - 1.0, defaults to 0.0) # inactive-dim = 0.0 # Specify a list of conditions of windows that should never be considered focused. # focus-exclude = [] focus-exclude = [ "class_g = 'Cairo-clock'" ]; # Use fixed inactive dim value, instead of adjusting according to window opacity. # inactive-dim-fixed = 1.0 # Specify a list of opacity rules, in the format `PERCENT:PATTERN`, # like `50:name *= "Firefox"`. picom-trans is recommended over this. # Note we don't make any guarantee about possible conflicts with other # programs that set '_NET_WM_WINDOW_OPACITY' on frame or client windows. # example: # opacity-rule = [ "80:class_g = 'URxvt'" ]; # opacity-rule = [ "100:class_g = 'okular'", # "100:class_g = 'firefox'", "85:class_g = 'kitty'", ]; ################################# # Corners # ################################# # Sets the radius of rounded window corners. When > 0, the compositor will # round the corners of windows. Does not interact well with # `transparent-clipping`. corner-radius = 5 # Exclude conditions for rounded corners. rounded-corners-exclude = [ "window_type = 'dock'", "window_type = 'desktop'" ]; ################################# # Background-Blurring # ################################# # Parameters for background blurring, see the *BLUR* section for more information. # blur-method = # blur-size = 12 # # blur-deviation = false # # blur-strength = 5 # Blur background of semi-transparent / ARGB windows. # Bad in performance, with driver-dependent behavior. # The name of the switch may change without prior notifications. # # blur-background = false # Blur background of windows when the window frame is not opaque. # Implies: # blur-background # Bad in performance, with driver-dependent behavior. The name may change. # # blur-background-frame = false # Use fixed blur strength rather than adjusting according to window opacity. # blur-background-fixed = false # Specify the blur convolution kernel, with the following format: # example: # blur-kern = "5,5,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1"; # # blur-kern = "" blur-kern = "3x3box"; # Exclude conditions for background blur. # blur-background-exclude = [] blur-background-exclude = [ "window_type = 'dock'", "window_type = 'desktop'", "_GTK_FRAME_EXTENTS@:c" ]; ################################# # General Settings # ################################# # Enable remote control via D-Bus. See the man page for more details. # dbus = true # Daemonize process. Fork to background after initialization. Causes issues with certain (badly-written) drivers. # daemon = false # Specify the backend to use: `xrender`, `glx`, `egl` or `xr_glx_hybrid`. # `xrender` is the default one. # # backend = "glx" backend = "glx"; # Use higher precision during rendering, and apply dither when presenting the # rendered screen. Reduces banding artifacts, but might cause performance # degradation. Only works with OpenGL. dithered-present = false; # Enable/disable VSync. # vsync = false vsync = true; # Enable remote control via D-Bus. See the *D-BUS API* section below for more details. # dbus = false # Try to detect WM windows (a non-override-redirect window with no # child that has 'WM_STATE') and mark them as active. # # mark-wmwin-focused = false mark-wmwin-focused = true; # Mark override-redirect windows that doesn't have a child window with 'WM_STATE' focused. # mark-ovredir-focused = false mark-ovredir-focused = false; # Try to detect windows with rounded corners and don't consider them # shaped windows. The accuracy is not very high, unfortunately. # # detect-rounded-corners = false detect-rounded-corners = true; # Detect '_NET_WM_WINDOW_OPACITY' on client windows, useful for window managers # not passing '_NET_WM_WINDOW_OPACITY' of client windows to frame windows. # # detect-client-opacity = false detect-client-opacity = true; # Use EWMH '_NET_ACTIVE_WINDOW' to determine currently focused window, # rather than listening to 'FocusIn'/'FocusOut' event. Might have more accuracy, # provided that the WM supports it. # # use-ewmh-active-win = false # Unredirect all windows if a full-screen opaque window is detected, # to maximize performance for full-screen windows. Known to cause flickering # when redirecting/unredirecting windows. # unredir-if-possible = false # Delay before unredirecting the window, in milliseconds. Defaults to 0. # unredir-if-possible-delay = 0 # Conditions of windows that shouldn't be considered full-screen for unredirecting screen. # unredir-if-possible-exclude = [] # Use 'WM_TRANSIENT_FOR' to group windows, and consider windows # in the same group focused at the same time. # # detect-transient = false detect-transient = true; # Use 'WM_CLIENT_LEADER' to group windows, and consider windows in the same # group focused at the same time. This usually means windows from the same application # will be considered focused or unfocused at the same time. # 'WM_TRANSIENT_FOR' has higher priority if detect-transient is enabled, too. # # detect-client-leader = false # Resize damaged region by a specific number of pixels. # A positive value enlarges it while a negative one shrinks it. # If the value is positive, those additional pixels will not be actually painted # to screen, only used in blur calculation, and such. (Due to technical limitations, # with use-damage, those pixels will still be incorrectly painted to screen.) # Primarily used to fix the line corruption issues of blur, # in which case you should use the blur radius value here # (e.g. with a 3x3 kernel, you should use `--resize-damage 1`, # with a 5x5 one you use `--resize-damage 2`, and so on). # May or may not work with *--glx-no-stencil*. Shrinking doesn't function correctly. # # resize-damage = 1 # Specify a list of conditions of windows that should be painted with inverted color. # Resource-hogging, and is not well tested. # # invert-color-include = [] # GLX backend: Avoid using stencil buffer, useful if you don't have a stencil buffer. # Might cause incorrect opacity when rendering transparent content (but never # practically happened) and may not work with blur-background. # My tests show a 15% performance boost. Recommended. # # glx-no-stencil = true # GLX backend: Avoid rebinding pixmap on window damage. # Probably could improve performance on rapid window content changes, # but is known to break things on some drivers (LLVMpipe, xf86-video-intel, etc.). # Recommended if it works. # # glx-no-rebind-pixmap = true # Disable the use of damage information. # This cause the whole screen to be redrawn every time, instead of the part of the screen # has actually changed. Potentially degrades the performance, but might fix some artifacts. # The opposing option is use-damage # # no-use-damage = false use-damage = true; # Use X Sync fence to sync clients' draw calls, to make sure all draw # calls are finished before picom starts drawing. Needed on nvidia-drivers # with GLX backend for some users. # # xrender-sync-fence = true # GLX backend: Use specified GLSL fragment shader for rendering window # contents. Read the man page for a detailed explanation of the interface. # # window-shader-fg = "default" # Use rules to set per-window shaders. Syntax is SHADER_PATH:PATTERN, similar # to opacity-rule. SHADER_PATH can be "default". This overrides window-shader-fg. # # window-shader-fg-rule = [ # "my_shader.frag:window_type != 'dock'" # ] # Force all windows to be painted with blending. Useful if you # have a glx-fshader-win that could turn opaque pixels transparent. # # force-win-blend = false # Do not use EWMH to detect fullscreen windows. # Reverts to checking if a window is fullscreen based only on its size and coordinates. # # no-ewmh-fullscreen = false # Dimming bright windows so their brightness doesn't exceed this set value. # Brightness of a window is estimated by averaging all pixels in the window, # so this could comes with a performance hit. # Setting this to 1.0 disables this behaviour. Requires --use-damage to be disabled. (default: 1.0) # # max-brightness = 1.0 # Make transparent windows clip other windows like non-transparent windows do, # instead of blending on top of them. # # transparent-clipping = false # Specify a list of conditions of windows that should never have transparent # clipping applied. Useful for screenshot tools, where you need to be able to # see through transparent parts of the window. # # transparent-clipping-exclude = [] # Set the log level. Possible values are: # "trace", "debug", "info", "warn", "error" # in increasing level of importance. Case doesn't matter. # If using the "TRACE" log level, it's better to log into a file # using *--log-file*, since it can generate a huge stream of logs. # # log-level = "debug" log-level = "warn"; # Set the log file. # If *--log-file* is never specified, logs will be written to stderr. # Otherwise, logs will to written to the given file, though some of the early # logs might still be written to the stderr. # When setting this option from the config file, it is recommended to use an absolute path. # # log-file = "/path/to/your/log/file" # Show all X errors (for debugging) # show-all-xerrors = false # Write process ID to a file. # write-pid-path = "/path/to/your/log/file" # Window type settings # # 'WINDOW_TYPE' is one of the 15 window types defined in EWMH standard: # "unknown", "desktop", "dock", "toolbar", "menu", "utility", # "splash", "dialog", "normal", "dropdown_menu", "popup_menu", # "tooltip", "notification", "combo", and "dnd". # # Following per window-type options are available: :: # # fade, shadow::: # Controls window-type-specific shadow and fade settings. # # opacity::: # Controls default opacity of the window type. # # focus::: # Controls whether the window of this type is to be always considered focused. # (By default, all window types except "normal" and "dialog" has this on.) # # full-shadow::: # Controls whether shadow is drawn under the parts of the window that you # normally won't be able to see. Useful when the window has parts of it # transparent, and you want shadows in those areas. # # clip-shadow-above::: # Controls whether shadows that would have been drawn above the window should # be clipped. Useful for dock windows that should have no shadow painted on top. # # redir-ignore::: # Controls whether this type of windows should cause screen to become # redirected again after been unredirected. If you have unredir-if-possible # set, and doesn't want certain window to cause unnecessary screen redirection, # you can set this to `true`. # wintypes: { tooltip = { fade = true; shadow = true; opacity = 0.75; focus = true; full-shadow = false; }; dock = { shadow = false; clip-shadow-above = true; } dnd = { shadow = false; } popup_menu = { opacity = 0.8; } dropdown_menu = { opacity = 0.8; } }; ```

Steps of reproduction

  1. Open two windows
  2. Enable monocle layout (so 2 windows are now stacked together)

Expected behavior

Scrolling should be smooth

Current Behavior

Scrolling causes noticeable frame drop, or even screen tearing

Stack trace

Does not crash

OpenGL trace

picom.trace.zip

Other details

Video demo: https://streamable.com/emifmw

absolutelynothelix commented 1 year ago

try --no-frame-pacing. if it helps, see #1072.

yshui commented 1 year ago

oh, this is interesting. i'd like to know a bit more about your set up.

you have 2 GPUs, so do you use PRIME? and can you run LIBGL_DEBUG=verbose glxinfo -B and post the output?

@absolutelynothelix this doesn't seem to be pacing related.

yshui commented 1 year ago

also, try use-damage = false

watermelonoof commented 1 year ago

try --no-frame-pacing. if it helps, see #1072.

works surprisingly well, sorry for the duplicate

you have 2 GPUs, so do you use PRIME?

I do but not with picom, both Xorg and picom are running on the iGPU as seen in intel-gpu-top Anyway here's LIBGL_DEBUG=verbose glxinfo -B if needed:

Output ``` name of display: :0 libGL: Can't open configuration file /etc/drirc: No such file or directory. libGL: Can't open configuration file /home/bryan/.drirc: No such file or directory. libGL: using driver i915 for 4 libGL: Can't open configuration file /etc/drirc: No such file or directory. libGL: Can't open configuration file /home/bryan/.drirc: No such file or directory. libGL: using driver i915 for 4 libGL: pci id for fd 4: 8086:3ea0, driver iris libGL: MESA-LOADER: dlopen(/usr/lib/dri/iris_dri.so) libGL: Can't open configuration file /etc/drirc: No such file or directory. libGL: Can't open configuration file /home/bryan/.drirc: No such file or directory. libGL: Can't open configuration file /etc/drirc: No such file or directory. libGL: Can't open configuration file /home/bryan/.drirc: No such file or directory. libGL: Can't open configuration file /etc/drirc: No such file or directory. libGL: Can't open configuration file /home/bryan/.drirc: No such file or directory. libGL: Using DRI3 for screen 0 display: :0 screen: 0 direct rendering: Yes Extended renderer info (GLX_MESA_query_renderer): Vendor: Intel (0x8086) Device: Mesa Intel(R) UHD Graphics 620 (WHL GT2) (0x3ea0) Version: 23.1.3 Accelerated: yes Video memory: 7752MB Unified memory: yes Preferred profile: core (0x1) Max core profile version: 4.6 Max compat profile version: 4.6 Max GLES1 profile version: 1.1 Max GLES[23] profile version: 3.2 OpenGL vendor string: Intel OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (WHL GT2) OpenGL core profile version string: 4.6 (Core Profile) Mesa 23.1.3 OpenGL core profile shading language version string: 4.60 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL version string: 4.6 (Compatibility Profile) Mesa 23.1.3 OpenGL shading language version string: 4.60 OpenGL context flags: (none) OpenGL profile mask: compatibility profile OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.1.3 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20 ```
yshui commented 1 year ago

@watermelonoof what about use-damage = false? (with or without --no-frame-pacing)

watermelonoof commented 1 year ago

The issue persists without --no-frame-pacing with use-damage = false. Looks like to me that --no-frame-pacing is the main cause.

yshui commented 1 year ago

thanks for testing. your problem looks very different from the others in #1072. and I don't know what's going on here. are you willing to help me do more tests?

watermelonoof commented 1 year ago

yea sure, i might not be very responsive though also i forgot to mention that what i see irl is just massive frame dropping, not like the stuttering shown in the video.

yshui commented 1 year ago

@watermelonoof hmm, do you mind to record a video of that?

watermelonoof commented 1 year ago

https://drive.google.com/file/d/1D898c_5NjxzkFRtoppVzB5Q5a6ytqXOb/view?usp=sharing i recorded in 60fps, you might wanna download it (sorry for using google idk where else to upload without quality loss)

yshui commented 1 year ago

it's a bit difficult to judge the frame rate from the video, maybe https://www.vsynctester.com/ would help? and can you also run picom with --log-level trace --log-file log.txt and upload log.txt here? thanks.

watermelonoof commented 1 year ago

Vid log.txt (w/o --no-frame-pacing) log1.txt (w/ --no-frame-pacing) so the frames are actually ok, it's just vsync not working properly?

yshui commented 1 year ago

@watermelonoof uh, you need to record your monitor, because your screen capture has this weird stuttering artifact which I don't know the cause of.

vsynctester also helps with identifying frame drops besides vsync problems.

watermelonoof commented 1 year ago

oops vid log2.txt (w/o --no-frame-pacing) log3.txt (w/ --no-frame-pacing)

yshui commented 1 year ago

thanks! if you can, try build from the partial-pacing branch and see if that helps

watermelonoof commented 1 year ago

the stuttering is less severe but still present https://drive.google.com/file/d/1RlCBOJbswmOOU9mWGlz1Rmv3xxKhHoDd/view?usp=drive_link

absolutelynothelix commented 1 year ago

a random point: it seems that presence of the xf86-video-intel package may or may not cause unexpected issues (see note here: https://wiki.archlinux.org/title/intel_graphics#Installation). consider testing with and without it and reporting back.