Fix quickReject computation for blurs

src/effects/SkBlurMask.cpp

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkBlurMask.h"
 #include "SkMath.h"
 #include "SkTemplates.h"
 #include "SkEndian.h"
 
-// scale factor for the blur radius to match the behavior of the all existing blur
-// code (both on the CPU and the GPU).  This magic constant is  1/sqrt(3).
-
-// TODO: get rid of this fudge factor and move any required fudging up into
-// the calling library
-
-#define kBlurRadiusFudgeFactor SkFloatToScalar( .57735f )
+const SkScalar SkBlurMask::kBLUR_SIGMA_SCALE = SkFloatToScalar(0.6f);
+const SkScalar SkBlurMask::kMAX_BLUR_RADIUS = SkIntToScalar(128);
+const SkScalar SkBlurMask::kBlurRadiusFudgeFactor = SkFloatToScalar(.57735f);
 
 #define UNROLL_SEPARABLE_LOOPS
 
 /**
  * This function performs a box blur in X, of the given radius.  If the
  * "transpose" parameter is true, it will transpose the pixels on write,
  * such that X and Y are swapped. Reads are always performed from contiguous
  * memory in X, for speed. The destination buffer (dst) must be at least
  * (width + leftRadius + rightRadius) * height bytes in size.
  *
@@ skipping 950 matching lines @@
         (void)autoCall.detach();
     }
 
     if (style == kInner_Style) {
         dst->fBounds = src.fBounds; // restore trimmed bounds
         dst->fRowBytes = src.fRowBytes;
     }
 
     return true;
 }