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am 70cf8fba: am c9071002: Merge "Fix tessellation bounds computation" into lmp-dev

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* commit '70cf8fba276269c6d162819bf4cbcdf06f6d22ea':
  Fix tessellation bounds computation
This commit is contained in:
Chris Craik
2014-09-09 18:47:43 +00:00
committed by Android Git Automerger
parent 72e6144823 2c4cf3f5b0
commit a23fc5877b
1 changed files with 12 additions and 5 deletions
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17
libs/hwui/PathTessellator.cpp
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@@ -162,14 +162,21 @@ public:
}
/**
* Outset the bounds of point data (for line endpoints or points) to account for AA stroke
* Outset the bounds of point data (for line endpoints or points) to account for stroke
* geometry.
*
* bounds are in pre-scaled space.
*/
void expandBoundsForStroke(Rect* bounds) const {
float outset = halfStrokeWidth;
if (outset == 0) outset = 0.5f;
bounds->outset(outset * inverseScaleX + Vertex::GeometryFudgeFactor(),
outset * inverseScaleY + Vertex::GeometryFudgeFactor());
if (halfStrokeWidth == 0) {
// hairline, outset by (0.5f + fudge factor) in post-scaling space
bounds->outset(fabs(inverseScaleX) * (0.5f + Vertex::GeometryFudgeFactor()),
fabs(inverseScaleY) * (0.5f + Vertex::GeometryFudgeFactor()));
} else {
// non hairline, outset by half stroke width pre-scaled, and fudge factor post scaled
bounds->outset(halfStrokeWidth + fabs(inverseScaleX) * Vertex::GeometryFudgeFactor(),
halfStrokeWidth + fabs(inverseScaleY) * Vertex::GeometryFudgeFactor());
}
}
};