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rust wasm gamedev gui imgui game-development

Emil Ernerfeldt 7b18fab7a4 Optimize tessellation of filled circles (#1616 ) When painting a scatter plot we sometimes want to paint hundreds of thousands of points (filled circles) on screen every frame. In this PR the font texture atlas is pre-populated with some filled circled of various radii. These are then used when painting (small) filled circled, which means A LOT less triangles and vertices are generated for them. In a new benchmark we can see a 10x speedup in circle tessellation, but the the real benefit comes in the painting of these circles: since we generate a lot less vertices, the backend painter has less to do. In a real-life scenario with a lot of things being painted (including around 100k points) I saw tessellation go from 35ms -> 7ms and painting go from 45ms -> 1ms. This means the total frame time went from 80ms to 8ms, or a 10x speedup.	3 years ago
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benchmark.rs	Optimize tessellation of filled circles (#1616)	3 years ago

Optimize tessellation of filled circles (#1616 )

When painting a scatter plot we sometimes want to paint hundreds of thousands of points (filled circles) on screen every frame.

In this PR the font texture atlas is pre-populated with some filled circled of various radii. These are then used when painting (small) filled circled, which means A LOT less triangles and vertices are generated for them.

In a new benchmark we can see a 10x speedup in circle tessellation, but the the real benefit comes in the painting of these circles: since we generate a lot less vertices, the backend painter has less to do.

In a real-life scenario with a lot of things being painted (including around 100k points) I saw tessellation go from 35ms -> 7ms and painting go from 45ms -> 1ms. This means the total frame time went from 80ms to 8ms, or a 10x speedup.

3 years ago

benchmark.rs

Optimize tessellation of filled circles (#1616)

3 years ago