add test for drawPosText, to measure any difference it introduces given that

it has to transform each char's position (unlike drawText)



git-svn-id: http://skia.googlecode.com/svn/trunk@2742 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 40 insertions, 4 deletions

diff --git a/bench/TextBench.cpp b/bench/TextBench.cpp
index e252ead4a3..63a71673ad 100644
--- a/bench/TextBench.cpp
+++ b/bench/TextBench.cpp
@@ -44,22 +44,45 @@ class TextBench : public SkBenchmark {
     SkString    fText;
     SkString    fName;
     FontQuality fFQ;
+    bool        fDoPos;
+    SkPoint*    fPos;
     enum { N = SkBENCHLOOP(800) };
 public:
     TextBench(void* param, const char text[], int ps,
-              SkColor color, FontQuality fq) : INHERITED(param) {
+              SkColor color, FontQuality fq, bool doPos = false) : INHERITED(param) {
         fFQ = fq;
+        fDoPos = doPos;
         fText.set(text);
 
         fPaint.setAntiAlias(kBW != fq);
         fPaint.setLCDRenderText(kLCD == fq);
         fPaint.setTextSize(SkIntToScalar(ps));
         fPaint.setColor(color);
+
+        if (doPos) {
+            size_t len = strlen(text);
+            SkScalar* adv = new SkScalar[len];
+            fPaint.getTextWidths(text, len, adv);
+            fPos = new SkPoint[len];
+            SkScalar x = 0;
+            for (size_t i = 0; i < len; ++i) {
+                fPos[i].set(x, SkIntToScalar(50));
+                x += adv[i];
+            }
+            delete[] adv;
+        }
+    }
+
+    virtual ~TextBench() {
+        delete[] fPos;
     }
 
 protected:
     virtual const char* onGetName() {
         fName.printf("text_%g", SkScalarToFloat(fPaint.getTextSize()));
+        if (fDoPos) {
+            fName.appendf("_pos");
+        }
         fName.appendf("_%s", fontQualityName(fPaint));
         if (SK_ColorBLACK != fPaint.getColor()) {
             fName.appendf("_%02X", fPaint.getAlpha());
@@ -83,10 +106,20 @@ protected:
         const SkScalar x0 = SkIntToScalar(-10);
         const SkScalar y0 = SkIntToScalar(-10);
 
+        if (fDoPos) {
+            // realistically, the matrix is often at least translated, so we
+            // do that since it exercises different code in drawPosText.
+            canvas->translate(SK_Scalar1, SK_Scalar1);
+        }
+
         for (int i = 0; i < N; i++) {
-            SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
-            SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
-            canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
+            if (fDoPos) {
+                canvas->drawPosText(fText.c_str(), fText.size(), fPos, paint);
+            } else {
+                SkScalar x = x0 + rand.nextUScalar1() * dim.fX;
+                SkScalar y = y0 + rand.nextUScalar1() * dim.fY;
+                canvas->drawText(fText.c_str(), fText.size(), x, y, paint);
+            }
         }
     }
 
@@ -110,6 +143,8 @@ static SkBenchmark* Fact21(void* p) { return new TextBench(p, STR, 16, 0xFF00000
 static SkBenchmark* Fact22(void* p) { return new TextBench(p, STR, 16, 0xFFFF0000, kLCD); }
 static SkBenchmark* Fact23(void* p) { return new TextBench(p, STR, 16, 0x88FF0000, kLCD); }
 
+static SkBenchmark* Fact111(void* p) { return new TextBench(p, STR, 16, 0xFF000000, kAA, true); }
+
 static BenchRegistry gReg01(Fact01);
 static BenchRegistry gReg02(Fact02);
 static BenchRegistry gReg03(Fact03);
@@ -122,3 +157,4 @@ static BenchRegistry gReg21(Fact21);
 static BenchRegistry gReg22(Fact22);
 static BenchRegistry gReg23(Fact23);
 
+static BenchRegistry gReg111(Fact111);