diff options
Diffstat (limited to 'third_party/rust/wpf-gpu-raster/CHANGES.md')
| -rw-r--r-- | third_party/rust/wpf-gpu-raster/CHANGES.md | 22 |
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 new file mode 100644 index 0000000000..8de9816947 --- /dev/null +++ b/third_party/rust/wpf-gpu-raster/CHANGES.md @@ -0,0 +1,22 @@ +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. |