Closed Bug 748305 Opened 12 years ago Closed 3 years ago

Sudden huge jank when switching slides

Categories

(Core :: Graphics, defect)

Product:
Core
Component:
Graphics
Platform:
x86
macOS
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED INCOMPLETE

People

(Reporter: jdm, Unassigned)

References

(
URL
)

Details

(Keywords: perf, Whiteboard: [Snappy:p2]) 

See the HTML5 slideshow in the URL field. The first six slides transition smoothly, but the switch from slide six to seven (as linked) is incredibly janky. We should do some profiling and figure out what's up.
Keywords: perf
I jut tried profiling this.  75% of my profile is under nsTextFrame::PaintOneShadow; about 8% of that is DrawText and the rest is unsurprisingly about half in BoxBlurVertical and half in BoxBlurHorizontal.  Another 13 is gradient painting for the page background.  Everything else is basically just noise.

Short of doing the blur on the GPU, not sure what we can do here.
Component: General → Graphics
QA Contact: general → thebes
Whiteboard: [Snappy] → [Snappy:p2]

slideshow appears to be gone

Status: NEW → RESOLVED
Closed: 3 years ago
Resolution: --- → INCOMPLETE
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