add bench for giant dashed lines, to test future optimizations for culling
git-svn-id: http://skia.googlecode.com/svn/trunk@7368 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/DashBench.cpp b/bench/DashBench.cpp
index e388a67..9b783b4 100644
--- a/bench/DashBench.cpp
+++ b/bench/DashBench.cpp
@@ -311,6 +311,84 @@
private:
typedef SkBenchmark INHERITED;
};
+
+
+class GiantDashBench : public SkBenchmark {
+ SkString fName;
+ SkPoint fPts[2];
+ SkAutoTUnref<SkPathEffect> fPathEffect;
+
+ enum {
+ N = SkBENCHLOOP(10)
+ };
+
+public:
+ enum LineType {
+ kHori_LineType,
+ kVert_LineType,
+ kDiag_LineType
+ };
+
+ static const char* LineTypeName(LineType lt) {
+ static const char* gNames[] = { "hori", "vert", "diag" };
+ SkASSERT((size_t)lt <= SK_ARRAY_COUNT(gNames));
+ return gNames[lt];
+ }
+
+ GiantDashBench(void* param, LineType lt) : INHERITED(param) {
+ fName.printf("giantdashline_%s", LineTypeName(lt));
+
+ // deliberately pick intervals that won't be caught by asPoints(), so
+ // we can test the filterPath code-path.
+ const SkScalar intervals[] = { 2, 1 };
+ fPathEffect.reset(new SkDashPathEffect(intervals,
+ SK_ARRAY_COUNT(intervals), 0));
+
+ SkScalar cx = 640 / 2; // center X
+ SkScalar cy = 480 / 2; // center Y
+ SkMatrix matrix;
+
+ switch (lt) {
+ case kHori_LineType:
+ matrix.setIdentity();
+ break;
+ case kVert_LineType:
+ matrix.setRotate(90, cx, cy);
+ break;
+ case kDiag_LineType:
+ matrix.setRotate(45, cx, cy);
+ break;
+ }
+
+ const SkScalar overshoot = 10*1000;
+ const SkPoint pts[2] = {
+ { -overshoot, cy }, { 640 + overshoot, cy }
+ };
+ matrix.mapPoints(fPts, pts, 2);
+ }
+
+protected:
+ virtual const char* onGetName() SK_OVERRIDE {
+ return fName.c_str();
+ }
+
+ virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
+ SkPaint p;
+ this->setupPaint(&p);
+ p.setStyle(SkPaint::kStroke_Style);
+ p.setStrokeWidth(1);
+ p.setPathEffect(fPathEffect);
+
+ for (int i = 0; i < N; ++i) {
+ canvas->drawPoints(SkCanvas::kLines_PointMode, 2, fPts, p);
+ }
+ }
+
+private:
+ typedef SkBenchmark INHERITED;
+};
+
+
///////////////////////////////////////////////////////////////////////////////
static const SkScalar gDots[] = { SK_Scalar1, SK_Scalar1 };
@@ -337,3 +415,7 @@
DEF_BENCH( return new DrawPointsDashingBench(p, 3, 1, true); )
DEF_BENCH( return new DrawPointsDashingBench(p, 5, 5, false); )
DEF_BENCH( return new DrawPointsDashingBench(p, 5, 5, true); )
+
+DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kHori_LineType); )
+DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kVert_LineType); )
+DEF_BENCH( return new GiantDashBench(p, GiantDashBench::kDiag_LineType); )