[Webkit-unassigned] [Bug 188840] webkitgtk+ on ARM doesn't play hardware-accelerated CSS animations

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188840

--- Comment #6 from Carlos Eduardo Ramalho <cadubentzen at gmail.com> ---
Comparing log of "compositing" channel when the animation in running on https://s.mort.coffee/hwaccel-css.

- Repeating log on ARM (RPi3):

RenderLayerCompositor 0x70a88a00 updateCompositingLayers after style change root (nil)
 checkForHierarchyUpdate 1, needGeometryUpdate 0

- Repeating log on X86_64 Intel:

RenderLayerCompositor 0x7fee69d6b178 updateCompositingLayers after style change root (nil)

(S)tacking Context, (N)ormal flow only, (O)verflow clip, (A)lpha (opacity or mask), has (B)lend mode, (I)solates blending, (T)ransform-ish, (F)ilter, Fi(X)ed position, (C)omposited
Dirty (z)-lists, Dirty (n)ormal flow lists
Descendant needs overlap (t)raversal, Descendant needs (b)acking or hierarchy update, All descendants need (r)equirements traversal, All (s)ubsequent layers need requirements traversal, All descendants need (h)ierarchy traversal
Needs compositing paint order update on (s)ubsequent layers, Needs compositing paint (o)rder children update, Needs post-(l)ayout update, Needs compositing (g)eometry update, (k)ids need geometry update, Needs compositing (c)onfig update, Needs compositing layer conne(x)ion update
S--------C -- tb--- ------ 0x7fee69da4500 (0,0) width=800 height=564
S--------- -- tb--- ------   + 0x7fee69da4a00 (0,0) width=800 height=35
S-----T--C -- ----- -lg---     + 0x7fee69da4b40 (400,8) width=392 height=19


Update 138 of main frame - compositing policy is normal
0x7fee69da4500 computeCompositingRequirements
0x7fee69da4a00 computeCompositingRequirements
  0x7fee69da4b40 computeCompositingRequirements
  0x7fee69da4b40 computeCompositingRequirements - willBeComposited 1
0x7fee69da4a00 computeCompositingRequirements - willBeComposited 0
0x7fee69da4500 computeCompositingRequirements - willBeComposited 1

RenderLayerCompositor::updateCompositingLayers - mid

(S)tacking Context, (N)ormal flow only, (O)verflow clip, (A)lpha (opacity or mask), has (B)lend mode, (I)solates blending, (T)ransform-ish, (F)ilter, Fi(X)ed position, (C)omposited
Dirty (z)-lists, Dirty (n)ormal flow lists
Descendant needs overlap (t)raversal, Descendant needs (b)acking or hierarchy update, All descendants need (r)equirements traversal, All (s)ubsequent layers need requirements traversal, All descendants need (h)ierarchy traversal
Needs compositing paint order update on (s)ubsequent layers, Needs compositing paint (o)rder children update, Needs post-(l)ayout update, Needs compositing (g)eometry update, (k)ids need geometry update, Needs compositing (c)onfig update, Needs compositing layer conne(x)ion update
S--------C -- -b--- ------ 0x7fee69da4500 (0,0) width=800 height=564
S--------- -- -b--- ------   + 0x7fee69da4a00 (0,0) width=800 height=35
S-----T--C -- ----- --g---     + 0x7fee69da4b40 (400,8) width=392 height=19

0x7fee69da4500 id 10 (0.000,0.000-800.000,564.000) 1762.50KB (root) [opaque] RenderView - updateBackingAndHierarchy
  0x7fee69da4b40 id 8 (400.000,8.000-792.000,27.000) 29.09KB z-index: 0 (3D transform)  <div> id='a' - updateBackingAndHierarchy
Total layers   primary   secondary   obligatory backing (KB)   secondary backing(KB)   total backing (KB)  update time (ms)
       2           2         0              1791.59                   0.00                1791.59               0.29
RenderLayerCompositor::updateCompositingLayers - post

(S)tacking Context, (N)ormal flow only, (O)verflow clip, (A)lpha (opacity or mask), has (B)lend mode, (I)solates blending, (T)ransform-ish, (F)ilter, Fi(X)ed position, (C)omposited
Dirty (z)-lists, Dirty (n)ormal flow lists
Descendant needs overlap (t)raversal, Descendant needs (b)acking or hierarchy update, All descendants need (r)equirements traversal, All (s)ubsequent layers need requirements traversal, All descendants need (h)ierarchy traversal
Needs compositing paint order update on (s)ubsequent layers, Needs compositing paint (o)rder children update, Needs post-(l)ayout update, Needs compositing (g)eometry update, (k)ids need geometry update, Needs compositing (c)onfig update, Needs compositing layer conne(x)ion update
S--------C -- ----- ------ 0x7fee69da4500 (0,0) width=800 height=564
S--------- -- ----- ------   + 0x7fee69da4a00 (0,0) width=800 height=35
S-----T--C -- ----- ------     + 0x7fee69da4b40 (400,8) width=392 height=19

RenderLayerCompositor::updateCompositingLayers - GraphicsLayers post
(GraphicsLayer 0x7fee69d05780 "content root"
  (anchor 0.00 0.00)
  (bounds 800.00 564.00)
  (primary-layer-id 2)
  (client 0x7fee69d6b178)
  (backingStoreAttached 1)
  (paintingPhases
    GraphicsLayerPaintBackground
    GraphicsLayerPaintForeground
    )
  (children 2RenderLayerCompositor 0x70a88a00 updateCompositingLayers after style change root (nil)
 checkForHierarchyUpdate 1, needGeometryUpdate 0

    (GraphicsLayer 0x7fedffdf7780 "RenderView"
      (bounds 800.00 564.00)
      (contentsOpaque 1)
      (primary-layer-id 10)
      (client 0x7fee69dca9a0)
      (backingStoreAttached 1)
      (paintingPhases
        GraphicsLayerPaintBackground
        GraphicsLayerPaintForeground
        )
      (children 1
        (GraphicsLayer 0x7fedffdf9780 " <div> id='a'"
          (position 400.00 8.00)
          (bounds 392.00 19.00)
          (drawsContent 1)
          (primary-layer-id 8)
          (client 0x7fee69dca840)
          (backingStoreAttached 1)
          (paintingPhases
            GraphicsLayerPaintBackground
            GraphicsLayerPaintForeground
            )
        )
      )
    )
    (GraphicsLayer 0x7fedffdfb780 "Document overlay Container"
      (primary-layer-id 6)
      (client 0x7fee69d93c80)
      (backingStoreAttached 1)
      (paintingPhases
        GraphicsLayerPaintBackground
        GraphicsLayerPaintForeground
        )
    )
  )
)

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