Add gms and benchmarks for drawing blurry round rects.

gm/blurroundrect.cpp

+/*
+* Copyright 2013 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 "SkBlurMask.h"
+#include "SkBlurMaskFilter.h"
+#include "SkCanvas.h"
+#include "SkColorFilter.h"
+#include "SkLayerDrawLooper.h"
+#include "SkPaint.h"
+#include "SkPath.h"
+#include "SkPoint.h"
+#include "SkRect.h"
+#include "SkRRect.h"
+#include "SkString.h"
+#include "SkXfermode.h"
+
+class BlurRoundRectGM : public skiagm::GM {
+public:
+    BlurRoundRectGM(int width, int height,
+                    // X and Y radii for the upper left corner
+                    int ulX, int ulY,
+                    // X and Y radii for the upper right corner
+                    int urX, int urY,
+                    // X and Y radii for the lower right corner
+                    int lrX, int lrY,
+                    // X and Y radii for the lower left corner
+                    int llX, int llY,
+                    int scaleX, int scaleY)
+        : fName("blurroundrect")
+        , fWidth(width)
+        , fHeight(height)
+        , fScaleX(scaleX)
+        , fScaleY(scaleY) {
+        fName.appendf("-WH[%ix%i]-UL[%ix%i]-UR[%ix%i]-LR[%ix%i]-LL[%ix%i]-scale[%ix%i]",
+                      width,  height,
+                      ulX,    ulY,
+                      urX,    urY,
+                      lrX,    lrY,
+                      llX,    llY,
+                      scaleX, scaleY);
+        SkVector radii[4];
+        radii[0].set(SkIntToScalar(ulX), SkIntToScalar(ulY));
+        radii[1].set(SkIntToScalar(urX), SkIntToScalar(urY));
+        radii[2].set(SkIntToScalar(lrX), SkIntToScalar(lrY));
+        radii[3].set(SkIntToScalar(llX), SkIntToScalar(llY));

[robertphillips, 2013/11/05 16:31:03]

Why not do this for the bench?

[scroggo, 2013/11/05 20:45:41]

Done.

+        SkRect r = SkRect::MakeWH(fWidth, fHeight);
+        fRRect.setRectRadii(r, radii);
+    }
+
+    virtual SkString onShortName() SK_OVERRIDE {
+        return fName;
+    }
+
+    virtual SkISize onISize() SK_OVERRIDE {
+        SkISize size = this->getUnscaledSize();
+        return SkISize::Make(SkScalarCeilToInt(SkScalarMul(size.fWidth, fScaleX)),
+                             SkScalarCeilToInt(SkScalarMul(size.fHeight, fScaleY)));
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        canvas->scale(fScaleX, fScaleY);
+    }
+
+    const SkRRect& getRRect() const {
+        return fRRect;
+    }
+

[robertphillips, 2013/11/05 16:31:03]

Doesn't seem like this virtual is buying us much.

[scroggo, 2013/11/05 20:45:41]

Removed.

+    // The subclass will implement this to inform us how big they
+    // draw before scaling.
+    virtual SkISize getUnscaledSize() const = 0;
+
+    // So subclasses can modify the name.
+    SkString* getName() {
+        return &fName;
+    }
+
+private:

[robertphillips, 2013/11/05 16:31:03]

line these up?

[scroggo, 2013/11/05 20:45:41]

Done.

+    SkString fName;
+    const int fWidth;
+    const int fHeight;
+    const SkScalar fScaleX;
+    const SkScalar fScaleY;
+    SkRRect fRRect;
+    typedef skiagm::GM INHERITED;
+};
+

[robertphillips, 2013/11/05 16:31:03]

// This GM mimics a blurred RR seen in the wild

+class SKPBlurRoundRectGM : public BlurRoundRectGM {
+public:
+    SKPBlurRoundRectGM(int width, int height,
+                       int ulX, int ulY,
+                       int urX, int urY,
+                       int lrX, int lrY,
+                       int llX, int llY,
+                       int scaleX, int scaleY)
+        : INHERITED(width, height, ulX, ulY, urX, urY, lrX, lrY, llX, llY, scaleX, scaleY) {
+        this->getName()->prepend("skp-");
+    }
+
+protected:
+    virtual SkISize getUnscaledSize() const SK_OVERRIDE {
+        return SkISize::Make(this->getRRect().rect().width(),
+                             this->getRRect().rect().height());
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        this->INHERITED::onDraw(canvas);
+        SkLayerDrawLooper* looper = new SkLayerDrawLooper;
+        {
+            SkLayerDrawLooper::LayerInfo info;
+            info.fFlagsMask = 0;

[robertphillips, 2013/11/05 16:31:03]

40?

[scroggo, 2013/11/05 20:45:41]

Done.

+            info.fPaintBits = 40;
+            info.fColorMode = SkXfermode::kSrc_Mode;
+            info.fOffset = SkPoint::Make(SkIntToScalar(-1), SkIntToScalar(0));
+            info.fPostTranslate = false;
+            SkPaint* paint = looper->addLayerOnTop(info);
+            SkMaskFilter* maskFilter = SkBlurMaskFilter::Create(SK_ScalarHalf,
+                    SkBlurMaskFilter::kNormal_BlurStyle,
+                    SkBlurMaskFilter::kHighQuality_BlurFlag);
+            paint->setMaskFilter(maskFilter)->unref();

[robertphillips, 2013/11/05 16:31:03]

hexify?

[scroggo, 2013/11/05 20:45:41]

Done.

+            SkColorFilter* colorFilter = SkColorFilter::CreateModeFilter(4279308561,
+                    SkXfermode::kSrcIn_Mode);
+            paint->setColorFilter(colorFilter)->unref();

[robertphillips, 2013/11/05 16:31:03]

hexify?

[scroggo, 2013/11/05 20:45:41]

Done.

+            paint->setColor(4278190080);
+        }
+        {
+            SkLayerDrawLooper::LayerInfo info;
+            looper->addLayerOnTop(info);
+        }
+        SkPaint paint;
+        canvas->drawRect(this->getRRect().rect(), paint);
+
+        paint.setLooper(looper)->unref();

[robertphillips, 2013/11/05 16:31:03]

hexify?

[scroggo, 2013/11/05 20:45:41]

Done.

+        paint.setColor(4293848814);
+        paint.setAntiAlias(true);
+
+        canvas->drawRRect(this->getRRect(), paint);
+    }
+
+private:
+    typedef BlurRoundRectGM INHERITED;
+};
+

[robertphillips, 2013/11/05 16:31:03]

// Simpler blurred RR test case where all the radii are the same.

[scroggo, 2013/11/05 20:45:41]

Done.

+class SimpleBlurRoundRectGM : public BlurRoundRectGM {
+public:
+    SimpleBlurRoundRectGM(int width, int height,
+                          int blurRadius, int cornerRadius,
+                          int scaleX = 1, int scaleY = 1)
+        : INHERITED(width, height, cornerRadius, cornerRadius,
+                    cornerRadius, cornerRadius, cornerRadius,
+                    cornerRadius, cornerRadius, cornerRadius, scaleX, scaleY)
+        , fBlurRadius(blurRadius) {
+        // For now at least, change the name to reflect only the
+        // variables that are changing.

[robertphillips, 2013/11/05 16:31:03]

overlength

[scroggo, 2013/11/05 20:45:41]

Done.

+        this->getName()->printf("blurround-blur[%i]-corner[%i]-scale[%ix%i]", fBlurRadius, cornerRadius, scaleX, scaleY);
+    }
+
+protected:
+    virtual SkISize getUnscaledSize() const SK_OVERRIDE {
+        return SkISize::Make(this->getRRect().rect().width() + 20,
+                             this->getRRect().rect().height() + 20);
+    }
+
+    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+        // Handle the scaling.
+        this->INHERITED::onDraw(canvas);
+        canvas->translate(10, 10);
+        SkMaskFilter* filter = SkBlurMaskFilter::Create(fBlurRadius,

[robertphillips, 2013/11/05 16:31:03]

indent?

[scroggo, 2013/11/05 20:45:41]

Done.

+                SkBlurMaskFilter::kNormal_BlurStyle);
+        SkPaint paint;
+        paint.setColor(SK_ColorBLUE);
+        paint.setMaskFilter(filter)->unref();
+        canvas->drawRRect(this->getRRect(), paint);
+    }
+private:
+    const int fBlurRadius;
+
+    typedef BlurRoundRectGM INHERITED;
+};
+

[robertphillips, 2013/11/05 16:31:03]

This is going to generate a bunch more images. Can these all be atlased into one
or two GM images?

[scroggo, 2013/11/05 20:45:41]

Done.

+// Create one with dimensions/rounded corners based on the skp
+DEF_GM(return new SKPBlurRoundRectGM(600, 5514, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1);)
+// Same radii, much smaller rectangle
+DEF_GM(return new SKPBlurRoundRectGM(100, 100, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2);)
+// Rounded rect with two opposite corners with large radii, the other two
+// small.
+DEF_GM(return new SKPBlurRoundRectGM(100, 100, 30, 30, 10, 10, 30, 30, 10, 10, 3, 4);)
+DEF_GM(return new SKPBlurRoundRectGM(100, 100, 90, 90, 90, 90, 90, 90, 90, 90, 2, 3);)
+
+// Try a few blur values with a small corner radius
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 1, 1));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 3, 1, 2, 2));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 6, 1));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 10, 1, 3, 3));
+
+// Now a few blur values with a larger corner radius
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 1, 3, 2, 2));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 3, 3));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 6, 3, 3, 3));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 10, 3));
+
+// Even larger corner radius
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 1, 6, 2, 4));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 3, 6));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 6, 6));
+DEF_GM(return new SimpleBlurRoundRectGM(100, 100, 10, 6, 1, 3));
+