Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 22 insertions, 0 deletions

diff --git a/third_party/rust/wpf-gpu-raster/CHANGES.md b/third_party/rust/wpf-gpu-raster/CHANGES.md
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+Changes for Safety
+------------------
+
+`CEdgeStore` is replaced by `typed_arena_nomut::Arena<CEdge>`. 
+
+`CEdgeStore` is an arena with built-in stack storage for the first allocation
+of the arena. It exposes the allocated buffers to support very fast allocation,
+and supports fast enumeration by returning pointers to each allocation.
+
+`CCoverageBuffer` also now uses a `typed_arena_nomut::Arena<CEdge>` but uses it
+to allocate `CCoverageIntervalBuffer`'s. We currently lack support for
+the builtin stack storage. Storing these in an Arena is not ideal, we'd rather
+just heap allocate them individually.
+
+
+Changes for performance
+-----------------------
+
+Switched from using triangle strips to triangle lists. This lets
+us use a single triangle to draw each line segement which reduces
+the amount of geometry per line segment from 6 vertices to 3.
+Direct2D also made this switch in later versions.