Push sigma-based blur interface into our GMs/benches/tests/samplecode

gm/blurrect.cpp

 /*
 * Copyright 2012 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
 
 #include "gm.h"
 #include "SkBlurMaskFilter.h"
 #include "SkBlurMask.h"
@@ skipping 54 matching lines @@
 };
 
 class BlurRectGM : public skiagm::GM {
       SkAutoTUnref<SkMaskFilter> fMaskFilter;
       SkString  fName;
       PaintProc fPProc;
       SkAlpha   fAlpha;
 public:
     BlurRectGM(const char name[], PaintProc pproc, U8CPU alpha,
                SkBlurMaskFilter::BlurStyle bs)
-               : fMaskFilter(SkBlurMaskFilter::Create(STROKE_WIDTH/2, bs,
+               : fMaskFilter(SkBlurMaskFilter::Create(bs,
+                             SkFloatToScalar(3.38675f),
                              SkBlurMaskFilter::kHighQuality_BlurFlag))
                , fName(name)
                , fPProc(pproc)
                , fAlpha(SkToU8(alpha)) {
         fName.appendf("_%s", gBlurStyle2Name[bs]);
     }
 
 protected:
     virtual SkString onShortName() {
         return fName;
@@ skipping 44 matching lines @@
             canvas->translate(0, r.height() * 4/3);
         }
     }
 private:
     typedef GM INHERITED;
 };
 
 class BlurRectCompareGM : public skiagm::GM {
     SkString  fName;
     unsigned int fRectWidth, fRectHeight;
-    SkScalar fRadius;
+    SkScalar fSigma;
     SkBlurMask::Style fStyle;
 public:
-    BlurRectCompareGM(const char name[], unsigned int rectWidth, unsigned int rectHeight, float radius, SkBlurMask::Style style)
+    BlurRectCompareGM(const char name[], unsigned int rectWidth, 
+                      unsigned int rectHeight, float sigma, 
+                      SkBlurMask::Style style)
         : fName(name)
         , fRectWidth(rectWidth)
         , fRectHeight(rectHeight)
-        , fRadius(radius)
-        , fStyle(style)
-        {}
-
+        , fSigma(sigma)
+        , fStyle(style) {
+    }
     int width() const {
         return fRectWidth;
     }
     int height() const {
         return fRectHeight;
     }
-    SkScalar radius() const {
-        return fRadius;
+    SkScalar sigma() const {
+        return fSigma;
     }
     SkBlurMask::Style style() const {
         return fStyle;
     }
 
 protected:
     virtual SkString onShortName() {
         return fName;
     }
 
@@ skipping 33 matching lines @@
 
     virtual uint32_t onGetFlags() const { return kSkipPipe_Flag; }
 
 private:
     typedef GM INHERITED;
 };
 
 class BlurRectFastGM: public BlurRectCompareGM {
 public:
     BlurRectFastGM(const char name[], unsigned int rectWidth,
-                   unsigned int rectHeight, float blurRadius,
+                   unsigned int rectHeight, float blurSigma,
                    SkBlurMask::Style style) :
-        INHERITED(name, rectWidth, rectHeight, blurRadius, style) {
+        INHERITED(name, rectWidth, rectHeight, blurSigma, style) {
         }
 
 protected:
     virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
-        return SkBlurMask::BlurRect(m, r, this->radius(), this->style());
+        return SkBlurMask::BlurRect(this->sigma(), m, r, this->style());
     }
 private:
     typedef BlurRectCompareGM INHERITED;
 };
 
 class BlurRectSlowGM: public BlurRectCompareGM {
 public:
-    BlurRectSlowGM(const char name[], unsigned int rect_width, unsigned int rect_height,
-                   float blur_radius, SkBlurMask::Style style) :
-        INHERITED(name, rect_width, rect_height, blur_radius, style)
-        {
+    BlurRectSlowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
+                   float blurSigma, SkBlurMask::Style style)
+        : INHERITED(name, rectWidth, rectHeight, blurSigma, style) {
+        }
 
-        }
 protected:
     virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
         SkMask src;
         r.roundOut(&src.fBounds);
         src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop);  // move to origin
         src.fFormat = SkMask::kA8_Format;
         src.fRowBytes = src.fBounds.width();
         src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
         SkAutoMaskFreeImage amfi(src.fImage);
 
         memset(src.fImage, 0xff, src.computeTotalImageSize());
 
-        return SkBlurMask::Blur(m, src, this->radius(), this->style(), this->getQuality());
+        return SkBlurMask::BoxBlur(m, src, this->sigma(), this->style(), this->getQuality());
     }
 
     virtual SkBlurMask::Quality getQuality() {
         return SkBlurMask::kHigh_Quality;
     }
 private:
     typedef BlurRectCompareGM INHERITED;
 };
 
 class BlurRectSlowLowGM: public BlurRectSlowGM {
 public:
     BlurRectSlowLowGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
-                      float blurRadius, SkBlurMask::Style style) :
-        INHERITED(name, rectWidth, rectHeight, blurRadius, style)
-        {
+                      float blurSigma, SkBlurMask::Style style)
+        : INHERITED(name, rectWidth, rectHeight, blurSigma, style) {
+        }
 
-        }
 protected:
     virtual SkBlurMask::Quality getQuality() SK_OVERRIDE {
         return SkBlurMask::kLow_Quality;
     }
 private:
     typedef BlurRectSlowGM INHERITED;
 };
 
 class BlurRectGroundTruthGM: public BlurRectCompareGM {
 public:
     BlurRectGroundTruthGM(const char name[], unsigned int rectWidth, unsigned int rectHeight,
-                          float blurRadius, SkBlurMask::Style style) :
-        INHERITED(name, rectWidth, rectHeight, blurRadius, style)
-        {
+                          float blurSigma, SkBlurMask::Style style)
+        : INHERITED(name, rectWidth, rectHeight, blurSigma, style) {
+        }
 
-        }
 protected:
     virtual bool makeMask(SkMask *m, const SkRect& r) SK_OVERRIDE {
         SkMask src;
         r.roundOut(&src.fBounds);
         src.fBounds.offset(-src.fBounds.fLeft, -src.fBounds.fTop);  // move to origin
         src.fFormat = SkMask::kA8_Format;
         src.fRowBytes = src.fBounds.width();
         src.fImage = SkMask::AllocImage(src.computeTotalImageSize());
         SkAutoMaskFreeImage amfi(src.fImage);
 
         memset(src.fImage, 0xff, src.computeTotalImageSize());
 
-        return SkBlurMask::BlurGroundTruth(m, src, this->radius(), this->style());
+        return SkBlurMask::BlurGroundTruth(this->sigma(), m, src, this->style());
     }
 
     virtual SkBlurMask::Quality getQuality() {
         return SkBlurMask::kHigh_Quality;
     }
 private:
     typedef BlurRectCompareGM INHERITED;
 };
 
 
 //////////////////////////////////////////////////////////////////////////////
 
 DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kNormal_BlurStyle);)
 DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kSolid_BlurStyle);)
 DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kOuter_BlurStyle);)
 DEF_GM(return new BlurRectGM("blurrect", NULL, 0xFF, SkBlurMaskFilter::kInner_BlurStyle);)
 
+static const SkScalar kBig = SkFloatToScalar(12.047f);
+static const SkScalar kSmall = SkFloatToScalar(1.6547f);
+
 // regular size rects, blurs should be small enough not to completely overlap.
 
-DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_normal_fast", 25, 100, 2,  SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_normal_fast", 25, 100, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_normal_slow", 25, 100, 2,  SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_normal_slow", 25, 100, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_inner_fast", 25, 100, 2,  SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_inner_fast", 25, 100, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_inner_slow", 25, 100, 2,  SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_inner_slow", 25, 100, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_outer_fast", 25, 100, 2,  SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_outer_fast", 25, 100, 20, SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_outer_slow", 25, 100, 2,  SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_outer_slow", 25, 100, 20, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_normal_fast", 25, 100, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_normal_fast", 25, 100, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_normal_slow", 25, 100, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_normal_slow", 25, 100, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_inner_fast", 25, 100, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_inner_fast", 25, 100, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_inner_slow", 25, 100, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_inner_slow", 25, 100, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_25_100_2_outer_fast", 25, 100, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_25_100_20_outer_fast", 25, 100, kBig, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_25_100_2_outer_slow", 25, 100, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_25_100_20_outer_slow", 25, 100, kBig, SkBlurMask::kOuter_Style);)
 
 // skinny tall rects, blurs overlap in X but not y
 
-DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_normal_fast", 5, 100, 2 , SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_normal_fast", 5, 100, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_normal_slow", 5, 100, 2 , SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_normal_slow", 5, 100, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_inner_fast", 5, 100, 2 , SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_inner_fast", 5, 100, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_inner_slow", 5, 100, 2 , SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_inner_slow", 5, 100, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_outer_fast", 5, 100, 2 , SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_outer_fast", 5, 100, 20, SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_outer_slow", 5, 100, 2 , SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_outer_slow", 5, 100, 20, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_normal_fast", 5, 100, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_normal_fast", 5, 100, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_normal_slow", 5, 100, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_normal_slow", 5, 100, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_inner_fast", 5, 100, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_inner_fast", 5, 100, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_inner_slow", 5, 100, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_inner_slow", 5, 100, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_100_2_outer_fast", 5, 100, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_100_20_outer_fast", 5, 100, kBig, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_100_2_outer_slow", 5, 100, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_100_20_outer_slow", 5, 100, kBig, SkBlurMask::kOuter_Style);)
 
 // tiny rects, blurs overlap in X and Y
 
-DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_normal_fast", 5, 5, 2 , SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_normal_fast", 5, 5, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_normal_slow", 5, 5, 2 , SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_normal_slow", 5, 5, 20, SkBlurMask::kNormal_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_inner_fast", 5, 5, 2 , SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_inner_fast", 5, 5, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_inner_slow", 5, 5, 2 , SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_inner_slow", 5, 5, 20, SkBlurMask::kInner_Style);)
-DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_outer_fast", 5, 5, 2 , SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_outer_fast", 5, 5, 20, SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_outer_slow", 5, 5, 2 , SkBlurMask::kOuter_Style);)
-DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_outer_slow", 5, 5, 20, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_normal_fast", 5, 5, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_normal_fast", 5, 5, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_normal_slow", 5, 5, kSmall, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_normal_slow", 5, 5, kBig, SkBlurMask::kNormal_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_inner_fast", 5, 5, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_inner_fast", 5, 5, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_inner_slow", 5, 5, kSmall, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_inner_slow", 5, 5, kBig, SkBlurMask::kInner_Style);)
+DEF_GM(return new BlurRectFastGM( "blurrect_5_5_2_outer_fast", 5, 5, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectFastGM("blurrect_5_5_20_outer_fast", 5, 5, kBig, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM( "blurrect_5_5_2_outer_slow", 5, 5, kSmall, SkBlurMask::kOuter_Style);)
+DEF_GM(return new BlurRectSlowGM("blurrect_5_5_20_outer_slow", 5, 5, kBig, SkBlurMask::kOuter_Style);)
 
 
 #if 0
 // dont' need to GM the gaussian convolution; it's slow and intended
 // as a ground truth comparison only.  Leaving these here in case we
 // ever want to turn these back on for debugging reasons.
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_1_simple", 25, 100, 1);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_2_simple", 25, 100, 2);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_3_simple", 25, 100, 3);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_4_simple", 25, 100, 4);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_5_simple", 25, 100, 5);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_6_simple", 25, 100, 6);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_7_simple", 25, 100, 7);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_8_simple", 25, 100, 8);)
 DEF_GM(return new BlurRectGroundTruthGM( "blurrect_25_100_9_simple", 25, 100, 9);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_10_simple", 25, 100, 10);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_11_simple", 25, 100, 11);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_12_simple", 25, 100, 12);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_13_simple", 25, 100, 13);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_14_simple", 25, 100, 14);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_15_simple", 25, 100, 15);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_16_simple", 25, 100, 16);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_17_simple", 25, 100, 17);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_18_simple", 25, 100, 18);)
 DEF_GM(return new BlurRectGroundTruthGM("blurrect_25_100_19_simple", 25, 100, 19);)
 #endif