SkPatchGrid bench

bench/PatchBench.cpp

 /*
  * 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 "SkBitmap.h"
 #include "SkCanvas.h"
-#include "SkColorPriv.h"
 #include "SkGradientShader.h"
 #include "SkPaint.h"
 #include "SkPatchUtils.h"
-#include "SkRandom.h"
-#include "SkShader.h"
 #include "SkString.h"
-#include "SkTArray.h"
+
+/**
+ * This bench measures the rendering time of the call SkCanvas::drawPatch with different types of 
+ * input patches (regular case, with loops, a square, with a big difference between "parallel" 
+ * sides). This bench also tests the different combination of optional parameters for the function 
+ * (passing texture coordinates and colors, only textures coordinates, only colors or none).
+ * Finally, it applies a scale to test if the size affects the rendering time. 
+ */
 
 class PatchBench : public Benchmark {
 
 public:
 
     enum VertexMode {
         kNone_VertexMode,
         kColors_VertexMode,
         kTexCoords_VertexMode,
         kBoth_VertexMode
@@ skipping 57 matching lines @@
             case kNone_VertexMode:
                 vertexMode.set("meshlines");
                 break;
             case kColors_VertexMode:
                 vertexMode.set("colors");
                 break;
             case kTexCoords_VertexMode:
                 vertexMode.set("texs");
                 break;
             case kBoth_VertexMode:
-                vertexMode.set("colors&texs");
+                vertexMode.set("colors_texs");
                 break;
             default:
                 break;
         }
         SkString type;
         this->appendName(&type);
         fName.printf("patch_%s_%s_[%f,%f]", type.c_str(), vertexMode.c_str(),
                     fScale.x(), fScale.y());
         return fName.c_str();
     }
 
-    virtual void preDraw() {
-
-    }
-
-    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
-
+    virtual void onPreDraw() SK_OVERRIDE {
         this->setCubics();
         this->setColors();
         this->setTexCoords();
         this->setupPaint(&fPaint);
         switch (fVertexMode) {
             case kTexCoords_VertexMode:
             case kBoth_VertexMode:
                 fPaint.setShader(this->createShader())->unref();
                 break;
             default:
                 fPaint.setShader(NULL);
                 break;
         }
+    }
 
+    virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
         canvas->scale(fScale.x(), fScale.y());
         for (int i = 0; i < loops; i++) {
             switch (fVertexMode) {
                 case kNone_VertexMode:
                     canvas->drawPatch(fCubics, NULL, NULL, NULL, fPaint);
                     break;
                 case kColors_VertexMode:
                     canvas->drawPatch(fCubics, fColors, NULL, NULL, fPaint);
                     break;
                 case kTexCoords_VertexMode:
@@ skipping 21 matching lines @@
 
 class SquarePatchBench : public PatchBench {
 public:
     SquarePatchBench(SkPoint scale, VertexMode vertexMode)
     : INHERITED(scale, vertexMode) { }
 
     virtual void appendName(SkString* name) SK_OVERRIDE {
         name->append("square");
     }
 
-    virtual void setCubics() {
+    virtual void setCubics() SK_OVERRIDE {
         const SkPoint points[SkPatchUtils::kNumCtrlPts] = {
             //top points
             {100,100},{150,100},{250,100}, {300,100},
             //right points
             {300, 150},{300,250},
             //bottom points
             {300,300},{250,300},{150,300},{100,300},
             //left points
             {100,250},{100,150}
         };
         memcpy(fCubics, points, SkPatchUtils::kNumCtrlPts * sizeof(SkPoint));
     }
 private:
     typedef PatchBench INHERITED;
 };
 
 class LODDiffPatchBench : public PatchBench {
 public:
     LODDiffPatchBench(SkPoint scale, VertexMode vertexMode)
     : INHERITED(scale, vertexMode) { }
 
     virtual void appendName(SkString* name) SK_OVERRIDE {
         name->append("LOD_Diff");
     }
 
-    virtual void setCubics() {
+    virtual void setCubics() SK_OVERRIDE {
         const SkPoint points[SkPatchUtils::kNumCtrlPts] = {
             //top points
             {100,175},{150,100},{250,100}, {300,0},
             //right points
             {300, 150},{300,250},
             //bottom points
             {300,400},{250,300},{150,300},{100,225},
             //left points
             {100,215},{100,185}
         };
         memcpy(fCubics, points, SkPatchUtils::kNumCtrlPts * sizeof(SkPoint));
     }
 private:
     typedef PatchBench INHERITED;
 };
 
 class LoopPatchBench : public PatchBench {
 public:
     LoopPatchBench(SkPoint scale, VertexMode vertexMode)
     : INHERITED(scale, vertexMode) { }
 
     virtual void appendName(SkString* name) SK_OVERRIDE {
         name->append("loop");
     }
 
-    virtual void setCubics() {
+    virtual void setCubics() SK_OVERRIDE {
         const SkPoint points[SkPatchUtils::kNumCtrlPts] = {
             //top points
             {100,100},{300,200},{100,200}, {300,100},
             //right points
             {380, 400},{380,0},
             //bottom points
             {300,300},{250,250},{30,200},{100,300},
             //left points
             {140,325},{150,150}
         };
@@ skipping 85 matching lines @@
 DEF_BENCH( return new LoopPatchBench(SkVector::Make(1.0f, 1.0f),
                                         PatchBench::kBoth_VertexMode); )
 DEF_BENCH( return new LoopPatchBench(SkVector::Make(3.0f, 3.0f),
                                         PatchBench::kNone_VertexMode); )
 DEF_BENCH( return new LoopPatchBench(SkVector::Make(3.0f, 3.0f),
                                         PatchBench::kColors_VertexMode); )
 DEF_BENCH( return new LoopPatchBench(SkVector::Make(3.0f, 3.0f),
                                         PatchBench::kTexCoords_VertexMode); )
 DEF_BENCH( return new LoopPatchBench(SkVector::Make(3.0f, 3.0f),
                                         PatchBench::kBoth_VertexMode); )