Module webrender::util

Structs

• Allocation
  A typesafe helper that separates new value construction from vector growing, allowing LLVM to ideally construct the element in place.
• Preallocator
  Record the size of a data structure to preallocate a similar size at the next frame and avoid growing it too many time.
• PrimaryArc
  Arc wrapper to support measurement via MallocSizeOf.
• Recycler
• ScaleOffset
• WeakTable
  This is inspired by the weak-table crate. It holds a Vec of weak pointers that are garbage collected as the Vec

Enums

• FastTransform
  An enum that tries to avoid expensive transformation matrix calculations when possible when dealing with non-perspective axis-aligned transformations.
• TransformedRectKind
• VecEntry
  An entry into a vector, similar to std::collections::hash_map::Entry.

Constants

• NEARLY_ZERO 🔒

Traits

• MatrixHelpers
• MaxRect
• PointHelpers
• RectHelpers
• VecHelper

Functions

• clamp_to_scale_factor
  Clamp scaling factor to a power of two.
• drain_filter
  Run the first callback over all elements in the array. If the callback returns true, the element is removed from the array and moved to a second callback.
• extract_inner_rect_impl 🔒
• extract_inner_rect_k
  Return an aligned rectangle that is inside the clip region and doesn’t intersect any of the bounding rectangles of the rounded corners, with a specific k factor to control how much of the rounded corner is included.
• extract_inner_rect_safe
  Return an aligned rectangle that is inside the clip region and doesn’t intersect any of the bounding rectangles of the rounded corners.
• lerp
• pack_as_float
• project_rect
• round_up_to_multiple
  Rounds a value up to the nearest multiple of mul
• scale_factors
  Computes the scale factors of this matrix; that is, the amounts each basis vector is scaled by.

Type Aliases

• LayoutFastTransform
• LayoutToWorldFastTransform