diff options
| author |  robertphillips <robertphillips@google.com> | 2016-08-16 09:30:03 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2016-08-16 09:30:03 -0700 |
| commit | c4d2f907311fca08303c254b2488bd7990fa2f32 (patch) | |
| tree | 8b2a684a908b6760e729969b02de844a4dc67f3c /include/effects/SkBlurMaskFilter.h | |
| parent | 2f4114a246e4753ef5dab63a4b40caf0cf7950ac (diff) | |
Update ComputeBlurredRRectParams to compute all the parameters needed for occluded blurred rrect ninepatch draws
This is split out of: https://codereview.chromium.org/2245653002/ (Start using vertex attributes for nine-patch blurred rrect draws)
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2248533002
Review-Url: https://codereview.chromium.org/2248533002
Diffstat (limited to 'include/effects/SkBlurMaskFilter.h')
| -rw-r--r-- | include/effects/SkBlurMaskFilter.h | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/include/effects/SkBlurMaskFilter.h b/include/effects/SkBlurMaskFilter.h index 12eec6052f..dfbae6b689 100644 --- a/include/effects/SkBlurMaskFilter.h +++ b/include/effects/SkBlurMaskFilter.h @@ -73,15 +73,27 @@ public: SkScalar blurRadius); #endif - static bool ComputeBlurredRRectParams(const SkRRect& rrect, - SkScalar sigma, + static const int kMaxDivisions = 6; + + // This method computes all the parameters for drawing a partially occluded nine-patched + // blurred rrect mask: + // rrectToDraw - the integerized rrect to draw in the mask + // widthHeight - how large to make the mask (rrectToDraw will be centered in this coord sys) + // rectXs, rectYs - the x & y coordinates of the covering geometry lattice + // texXs, texYs - the texture coordinate at each point in rectXs & rectYs + // numXs, numYs - number of coordinates in the x & y directions + // skipMask - bit mask that contains a 1-bit whenever one of the cells is occluded + // It returns true if 'devRRect' is nine-patchable + static bool ComputeBlurredRRectParams(const SkRRect& srcRRect, const SkRRect& devRRect, + const SkRect& occluder, + SkScalar sigma, SkScalar xformedSigma, SkRRect* rrectToDraw, SkISize* widthHeight, - SkScalar xs[4], - int* numXs, - SkScalar ys[4], - int* numYs); - + SkScalar rectXs[kMaxDivisions], + SkScalar rectYs[kMaxDivisions], + SkScalar texXs[kMaxDivisions], + SkScalar texYs[kMaxDivisions], + int* numXs, int* numYs, uint32_t* skipMask); SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |