diff options
| author |  Stephen White <senorblanco@chromium.org> | 2017-03-03 12:24:16 -0500 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2017-03-03 21:18:05 +0000 |
| commit | 651cbe9af67b49c5a3ad3788c3a50a003827a8e2 (patch) | |
| tree | 41d49889df48c98a64b8cf9f9471578b104a774d | |
| parent | fec1729b9e9fdb802715dd8619684aa47e5856a7 (diff) | |
GrTessellator: Implement a fast path in poly emission.
When there's a single triangle remaining in the monotone,
emit early and skip a convexity check.
BUG=skia:
Change-Id: I591acf4b7f567dbbf7681ba72181e578ca4623ec
Reviewed-on: https://skia-review.googlesource.com/8797
Commit-Queue: Stephen White <senorblanco@chromium.org>
Reviewed-by: Brian Salomon <bsalomon@google.com>
| -rw-r--r-- | src/gpu/GrTessellator.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gpu/GrTessellator.cpp b/src/gpu/GrTessellator.cpp index 80a813f802..10f6edf7da 100644 --- a/src/gpu/GrTessellator.cpp +++ b/src/gpu/GrTessellator.cpp @@ -481,6 +481,7 @@ struct Poly { Edge* e = fFirstEdge; VertexList vertices; vertices.append(e->fTop); + int count = 1; while (e != nullptr) { if (kRight_Side == fSide) { vertices.append(e->fBottom); @@ -489,6 +490,7 @@ struct Poly { vertices.prepend(e->fBottom); e = e->fLeftPolyNext; } + count++; } Vertex* first = vertices.fHead; Vertex* v = first->fNext; @@ -497,6 +499,9 @@ struct Poly { Vertex* prev = v->fPrev; Vertex* curr = v; Vertex* next = v->fNext; + if (count == 3) { + return emit_triangle(prev, curr, next, aaParams, data); + } double ax = static_cast<double>(curr->fPoint.fX) - prev->fPoint.fX; double ay = static_cast<double>(curr->fPoint.fY) - prev->fPoint.fY; double bx = static_cast<double>(next->fPoint.fX) - curr->fPoint.fX; @@ -505,6 +510,7 @@ struct Poly { data = emit_triangle(prev, curr, next, aaParams, data); v->fPrev->fNext = v->fNext; v->fNext->fPrev = v->fPrev; + count--; if (v->fPrev == first) { v = v->fNext; } else { |