diff options
| author |  Stephen White <senorblanco@chromium.org> | 2018-07-16 13:31:16 -0400 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2018-07-16 17:57:19 +0000 |
| commit | 71ed661963ba57200e6f9b3d5ad64105b607bb98 (patch) | |
| tree | 7faa1e2573cf7621f365e16b4253b7373e3609ce /src | |
| parent | b983e6baa1db462a047e14ed83be759f2361838c (diff) | |
GrTessellator: collinear edges during sanitize.
When three collinear edges occur during the sanitize_contours() pass,
their vertices may not yet have been discovered to be coincident. So
we must do the vertex comparison by point, rather than by pointer.
Bug: 860655
Change-Id: I89dc7526905bb5473206661348fee431371731a0
Reviewed-on: https://skia-review.googlesource.com/141523
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gpu/GrTessellator.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/gpu/GrTessellator.cpp b/src/gpu/GrTessellator.cpp index 3424ee3f91..dd8799968e 100644 --- a/src/gpu/GrTessellator.cpp +++ b/src/gpu/GrTessellator.cpp @@ -1053,16 +1053,18 @@ void merge_edges_below(Edge* edge, Edge* other, EdgeList* activeEdges, Vertex** void merge_collinear_edges(Edge* edge, EdgeList* activeEdges, Vertex** current, Comparator& c) { for (;;) { - if (edge->fPrevEdgeAbove && (edge->fTop == edge->fPrevEdgeAbove->fTop || + const SkPoint& top = edge->fTop->fPoint; + const SkPoint& bottom = edge->fBottom->fPoint; + if (edge->fPrevEdgeAbove && (edge->fPrevEdgeAbove->fTop->fPoint == top || !edge->fPrevEdgeAbove->isLeftOf(edge->fTop))) { merge_edges_above(edge->fPrevEdgeAbove, edge, activeEdges, current, c); - } else if (edge->fNextEdgeAbove && (edge->fTop == edge->fNextEdgeAbove->fTop || + } else if (edge->fNextEdgeAbove && (edge->fNextEdgeAbove->fTop->fPoint == top || !edge->isLeftOf(edge->fNextEdgeAbove->fTop))) { merge_edges_above(edge->fNextEdgeAbove, edge, activeEdges, current, c); - } else if (edge->fPrevEdgeBelow && (edge->fBottom == edge->fPrevEdgeBelow->fBottom || + } else if (edge->fPrevEdgeBelow && (edge->fPrevEdgeBelow->fBottom->fPoint == bottom || !edge->fPrevEdgeBelow->isLeftOf(edge->fBottom))) { merge_edges_below(edge->fPrevEdgeBelow, edge, activeEdges, current, c); - } else if (edge->fNextEdgeBelow && (edge->fBottom == edge->fNextEdgeBelow->fBottom || + } else if (edge->fNextEdgeBelow && (edge->fNextEdgeBelow->fBottom->fPoint == bottom || !edge->isLeftOf(edge->fNextEdgeBelow->fBottom))) { merge_edges_below(edge->fNextEdgeBelow, edge, activeEdges, current, c); } else { |