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Added Vertex/Index cost per Primitive table.

ocornut 2026-07-28 18:07:58 +02:00
parent 61dba1a0db
commit fa545d7bc3
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71
Draw-List.md

@ -661,3 +661,74 @@ Fills the staged path using `AddConvexPolyFilled()` and clears the path. See `Ad
### `PathFillConcave(col)`
Fills the staged path using `AddConcavePolyFilled()` and clears the path. See `AddConcavePolyFilled()` for more information.
# Vertex/Index cost per Primitive
Old: up to 1.92.9
<BR>New: from 1.93.0
```
AddLine()
- Old 4 vtx, 2 tris |
- New 4 vtx, 2 tris | <-- Common
- New 8 vtx, 6 tris | with _AALineEnds
AddLineH(), AddLineV()
- Old 4 vtx, 2 tris |
- New 4 vtx, 2 tris | when aligned <-- Common
- New 4 vtx, 2 tris |
- New 8 vtx, 6 tris | with _AALineEnds
AddRect()
- Old ?? | r=0
- Old 16 vtx, 16 tris | with rounding (r=1..2)
- Old 24 vtx, 24 tris | with rounding (r=3)
- Old 32 vtx, 32 tris | with rounding (r=4..8)
- Old 40 vtx, 40 tris | with rounding (r=9..15)
- New 8 vtx, 8 tris | no rounding
- New 8 vtx, 8 tris | when aligned, no rounding <-- Common
- New 32 vtx, 16 tris | when aligned, baked rounding (r=1..16) <-- Common
- New 16 vtx, 16 tris | with rounding (r=1..2)
- New 24 vtx, 24 tris | with rounding (r=3)
- New 32 vtx, 32 tris | with rounding (r=4..8)
- New 40 vtx, 40 tris | with rounding (r=9..15)
- New 19 vtx, 20 tris | tiny-rounding (r=1..2)
- New 31 vtx, 32 tris | tiny-rounding (r=9..15)
(PS: baked rounding is faster than old code)
AddRectFilled()
- Old 4 vtx, 2 tris | no rounding [no AA]
- Old 16 vtx, 22 tris | with rounding (r=1..2)
- Old 24 vtx, 34 tris | with rounding (r=3)
- Old 32 vtx, 46 tris | with rounding (r=4..8)
- Old 40 vtx, 58 tris | with rounding (r=9..15)
- New 4 vtx, 2 tris | when aligned, no rounding <-- Common
- New 16 vtx, 18 tris | when aligned, baked rounding (r=1..16) <-- Common
- New 8 vtx, 10 tris | no rounding
- New 16 vtx, 22 tris | with rounding (r=1..2)
- New 24 vtx, 34 tris | with rounding (r=3)
- New 32 vtx, 46 tris | with rounding (r=4..8)
- New 40 vtx, 58 tris | with rounding (r=9..15)
AddPolyline()
- Old: N*2 vtx, (N-1)*2 tris | textured path, no-AA e.g for N=6: 12 vtx, 10 tris
- Old: N*3 vtx, (N-1)*4 tris | 1 pixel wide, AA e.g for N=6: 18 vtx, 20 tris
- Old: N*4 vtx, (N-1)*6 tris | Wider, AA e.g for N=6: 24 vtx, 30 tris
- New: N*2 vtx, (N-1)*2 tris | No bevel, closed, no-AA e.g for N=6: 12 vtx, 10 tris
- New: N*2+4 v, (N-1)*2+4 tris | No bevel, open e.g for N=6: 16 vtx, 14 tris
- New: N*4+4 v, (N-1)*5+4 tris | All bevels, open e.g for N=6: 28 vtx, 29 tris (theorical max)
(PS: ImDrawFlags_MiterOnly implies no bevel. Each bevels adds +2 vtx, +3 tris)
AddBezierCubic()
AddBezierQuadratic()
- New: with _AALineEnds: adds +4 vtx, +4 tris
AddQuad(), AddTriangle()
- New: each bevel corner adds +2 vtx, +3 tris
AddCircle(), AddNgon(), AddEllipse()
- No change
AddCircleFilled(), AddNgonFilled(), AddEllipseFilled()
- No change
```