Open Bug 1596046 Opened 5 years ago Updated 2 years ago

A lot of vector allocations during frame building

Categories

(Core :: Graphics: WebRender, defect, P3)

Product:
Core
Component:
Graphics: WebRender
Type:
defect

Tracking

()

People

(Reporter: nical, Unassigned)

References

(Blocks 1 open bug)

Details

When profiling frame building, vector allocations/reallocations/deallocations are often taking a non-trivial slice of the render backend time.

Time for another pass at better recycling and preallocating vectors.

Here are a few of the top functions when focusing on replace_realloc (Mostly vector reallocations) in the profiler on this test case: https://bugzilla.mozilla.org/attachment.cgi?id=9025942

  • render task creation
  • writing gpu blocks
  • AlphaBatchList::set_params_and_get_batch
  • AlphaBatchBuilder::push_single_instance
  • PicturePrimitive::take_context
  • PictureState::update
  • PrimitiveHeaders::push
  • ClipChainStack::push_clip
  • gpu_cache::Texture::push_data
Depends on: 1711678
Severity: normal → S3
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