Revert of Remove gpu shader optimatization for solid white or trans black colors (https://codereview.chromium.org/375823005/)

Reason for revert:
possible test and gm failures

Original issue's description:
> Remove gpu shader optimatization for solid white or trans black colors
>
> Running test on the added bench which draws a grid of all white paths, all blue paths, or alternating checkered white/blue paths.
>
> With optimization in (ms):
>          White       Blue        Checkered
> Linux    ~80         ~80         ~160
> N7       ~800        ~1100       ~1500
> Moto-e   ~830        ~1100       ~2500
>
> Without optimization in (ms):
>          White       Blue        Checkered
> Linux    ~80         ~80         ~80
> N7       ~1100       ~1100       ~1100
> Moto-e   ~1100       ~1100       ~1500
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/5f78d2251a440443c9eaa321dad058d7a32bfef7

R=bsalomon@google.com
TBR=bsalomon@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: egdaniel@google.com

Review URL: https://codereview.chromium.org/385163004

1 files changed, 0 insertions, 199 deletions

diff --git a/bench/AlternatingColorPatternBench.cpp b/bench/AlternatingColorPatternBench.cpp
deleted file mode 100644
index 2a2e771d52..0000000000
--- a/bench/AlternatingColorPatternBench.cpp
+++ /dev/null
@@ -1,199 +0,0 @@
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "Benchmark.h"
-#include "SkCanvas.h"
-#include "SkGradientShader.h"
-#include "SkPaint.h"
-#include "SkString.h"
-
-enum ColorPattern {
-    kWhite_ColorPattern,
-    kBlue_ColorPattern,
-    kOpaqueBitmap_ColorPattern,
-    kAlphaBitmap_ColorPattern,
-};
-
-static const struct ColorPatternData{
-    SkColor         fColor;
-    bool            fIsBitmap;
-    const char*     fName;
-} gColorPatterns[] = {
-    // Keep this in same order as ColorPattern enum
-    { SK_ColorWHITE, false,  "white"        }, // kWhite_ColorPattern
-    { SK_ColorBLUE,  false,  "blue"         }, // kBlue_ColorPattern
-    { SK_ColorWHITE, true,   "obaqueBitMap" }, // kOpaqueBitmap_ColorPattern
-    { 0x10000000,    true,   "alphaBitmap"  }, // kAlphaBitmap_ColorPattern
-};
-
-enum DrawType {
-    kRect_DrawType,
-    kPath_DrawType,
-};
-
-static void makebm(SkBitmap* bm, int w, int h) {
-    bm->allocN32Pixels(w, h);
-    bm->eraseColor(SK_ColorTRANSPARENT);
-
-    SkCanvas    canvas(*bm);
-    SkScalar    s = SkIntToScalar(SkMin32(w, h));
-    static const SkPoint     kPts0[] = { { 0, 0 }, { s, s } };
-    static const SkPoint     kPts1[] = { { s/2, 0 }, { s/2, s } };
-    static const SkScalar    kPos[] = { 0, SK_Scalar1/2, SK_Scalar1 };
-    static const SkColor kColors0[] = {0x80F00080, 0xF0F08000, 0x800080F0 };
-    static const SkColor kColors1[] = {0xF08000F0, 0x8080F000, 0xF000F080 };
-
-
-    SkPaint     paint;
-
-    paint.setShader(SkGradientShader::CreateLinear(kPts0, kColors0, kPos,
-                    SK_ARRAY_COUNT(kColors0), SkShader::kClamp_TileMode))->unref();
-    canvas.drawPaint(paint);
-    paint.setShader(SkGradientShader::CreateLinear(kPts1, kColors1, kPos,
-                    SK_ARRAY_COUNT(kColors1), SkShader::kClamp_TileMode))->unref();
-    canvas.drawPaint(paint);
-}
-
-/**
- * This bench draws a grid of either rects or filled paths, with two alternating color patterns.
- * This color patterns are passed in as enums to the class. The options are:
- *   1) solid white color
- *   2) solid blue color
- *   3) opaque bitmap
- *   4) partial alpha bitmap
- * The same color pattern can be set for both arguments to create a uniform pattern on all draws.
- *
- * The bench is used to test a few things. First it can test any optimizations made for a specific
- * color pattern (for example drawing an opaque bitmap versus one with partial alpha). Also it can
- * be used to test the cost of program switching and/or batching when alternating between different
- * patterns when on the gpu.
- */
-class AlternatingColorPatternBench : public Benchmark {
-public:
-    enum {
-        NX = 5,
-        NY = 5,
-        NUM_DRAWS = NX * NY,
-    };
-    SkPath  fPaths[NUM_DRAWS];
-    SkRect  fRects[NUM_DRAWS];
-    U8CPU fAlphas[NUM_DRAWS];
-    SkColor fColors[NUM_DRAWS];
-    SkShader* fShaders[NUM_DRAWS];
-
-    SkString        fName;
-    ColorPatternData    fPattern1;
-    ColorPatternData    fPattern2;
-    DrawType fDrawType;
-    SkBitmap fBmp;
-
-    SkShader* fBmShader;
-
-    AlternatingColorPatternBench(ColorPattern pattern1, ColorPattern pattern2, DrawType drawType) {
-        fPattern1 = gColorPatterns[pattern1];
-        fPattern2 = gColorPatterns[pattern2];
-        fName.printf("colorPattern_%s_%s_%s",
-                     fPattern1.fName, fPattern2.fName,
-                     kRect_DrawType == drawType ? "rect" : "path");
-        fDrawType = drawType;
-    }
-
-    virtual ~AlternatingColorPatternBench() {
-        fBmShader->unref();
-    }
-
-protected:
-    virtual const char* onGetName() SK_OVERRIDE {
-        return fName.c_str();
-    }
-
-    virtual void onPreDraw() {
-        int w = 40;
-        int h = 40;
-        makebm(&fBmp, w, h);
-        fBmShader = SkShader::CreateBitmapShader(fBmp,
-                                                 SkShader::kRepeat_TileMode,
-                                                 SkShader::kRepeat_TileMode);
-        int offset = 2;
-        int count = 0;
-        for (int j = 0; j < NY; ++j) {
-            for (int i = 0; i < NX; ++i) {
-                int x = (w + offset) * i;
-                int y = (h * offset) * j;
-                if (kRect_DrawType == fDrawType) {
-                    fRects[count].set(SkIntToScalar(x), SkIntToScalar(y),
-                                      SkIntToScalar(x + w), SkIntToScalar(y + h));
-                } else {
-                    fPaths[count].moveTo(SkIntToScalar(x), SkIntToScalar(y));
-                    fPaths[count].rLineTo(SkIntToScalar(w), 0);
-                    fPaths[count].rLineTo(0, SkIntToScalar(h));
-                    fPaths[count].rLineTo(SkIntToScalar(-w + 1), 0);
-                }
-                if (0 == count % 2) {
-                    fColors[count]  = fPattern1.fColor;
-                    fShaders[count] = fPattern1.fIsBitmap ? fBmShader : NULL;
-                } else {
-                    fColors[count]  = fPattern2.fColor;
-                    fShaders[count] = fPattern2.fIsBitmap ? fBmShader : NULL;
-                }
-                ++count;
-            }
-        }
-    }
-
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
-        SkPaint paint;
-        paint.setAntiAlias(false);
-        paint.setFilterLevel(SkPaint::kLow_FilterLevel);
-
-        for (int i = 0; i < loops; ++i) {
-            for (int j = 0; j < NUM_DRAWS; ++j) {
-                paint.setColor(fColors[j]);
-                paint.setShader(fShaders[j]);
-                if (kRect_DrawType == fDrawType) {
-                    canvas->drawRect(fRects[j], paint);
-                } else {
-                    canvas->drawPath(fPaths[j], paint);
-                }
-            }
-        }
-    }
-
-private:
-    typedef Benchmark INHERITED;
-};
-
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kWhite_ColorPattern, kWhite_ColorPattern,
-                              kPath_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kBlue_ColorPattern, kBlue_ColorPattern,
-                              kPath_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kWhite_ColorPattern, kBlue_ColorPattern,
-                              kPath_DrawType)); )
-
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kOpaqueBitmap_ColorPattern, kOpaqueBitmap_ColorPattern,
-                              kPath_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kAlphaBitmap_ColorPattern, kAlphaBitmap_ColorPattern,
-                              kPath_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kOpaqueBitmap_ColorPattern, kAlphaBitmap_ColorPattern,
-                              kPath_DrawType)); )
-
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kOpaqueBitmap_ColorPattern, kOpaqueBitmap_ColorPattern,
-                              kRect_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kAlphaBitmap_ColorPattern, kAlphaBitmap_ColorPattern,
-                              kRect_DrawType)); )
-DEF_BENCH( return SkNEW_ARGS(AlternatingColorPatternBench,
-                             (kOpaqueBitmap_ColorPattern, kAlphaBitmap_ColorPattern,
-                              kRect_DrawType)); )
-