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      1 #include "SkBenchmark.h"
      2 #include "SkColorPriv.h"
      3 #include "SkMatrix.h"
      4 #include "SkRandom.h"
      5 #include "SkString.h"
      6 #include "SkPaint.h"
      7 
      8 #define TILE(x, width)  (((x) & 0xFFFF) * width >> 16)
      9 
     10 class InterpBench : public SkBenchmark {
     11     enum {
     12         kBuffer = 128,
     13         kLoop   = 20000
     14     };
     15     SkString    fName;
     16     int16_t     fDst[kBuffer];
     17     float       fFx, fDx;
     18 public:
     19     InterpBench(void* param, const char name[]) : INHERITED(param) {
     20         fName.printf("interp_%s", name);
     21         fFx = 3.3f;
     22         fDx = 0.1257f;
     23         fIsRendering = false;
     24     }
     25 
     26     virtual void performTest(int16_t dst[], float x, float dx, int count) = 0;
     27 
     28 protected:
     29     virtual int mulLoopCount() const { return 1; }
     30 
     31     virtual const char* onGetName() {
     32         return fName.c_str();
     33     }
     34 
     35     virtual void onDraw(SkCanvas*) {
     36         int n = SkBENCHLOOP(kLoop * this->mulLoopCount());
     37         for (int i = 0; i < n; i++) {
     38             this->performTest(fDst, fFx, fDx, kBuffer);
     39         }
     40     }
     41 
     42 private:
     43     typedef SkBenchmark INHERITED;
     44 };
     45 
     46 class Fixed16D16Interp : public InterpBench {
     47 public:
     48     Fixed16D16Interp(void* param) : INHERITED(param, "16.16") {}
     49 
     50 protected:
     51     virtual void performTest(int16_t dst[], float fx, float dx, int count) SK_OVERRIDE {
     52         SkFixed curr = SkFloatToFixed(fx);
     53         SkFixed step = SkFloatToFixed(dx);
     54         for (int i = 0; i < count; i += 4) {
     55             dst[i + 0] = TILE(curr, count); curr += step;
     56             dst[i + 1] = TILE(curr, count); curr += step;
     57             dst[i + 2] = TILE(curr, count); curr += step;
     58             dst[i + 3] = TILE(curr, count); curr += step;
     59         }
     60     }
     61 private:
     62     typedef InterpBench INHERITED;
     63 };
     64 
     65 class Fixed32D32Interp : public InterpBench {
     66 public:
     67     Fixed32D32Interp(void* param) : INHERITED(param, "32.32") {}
     68 
     69 protected:
     70     virtual void performTest(int16_t dst[], float fx, float dx, int count) SK_OVERRIDE {
     71         int64_t curr = (int64_t)(fx * 65536 * 655536);
     72         int64_t step = (int64_t)(dx * 65536 * 655536);
     73         SkFixed tmp;
     74         for (int i = 0; i < count; i += 4) {
     75             tmp = (SkFixed)(curr >> 16);
     76             dst[i + 0] = TILE(tmp, count);
     77             curr += step;
     78 
     79             tmp = (SkFixed)(curr >> 16);
     80             dst[i + 1] = TILE(tmp, count);
     81             curr += step;
     82 
     83             tmp = (SkFixed)(curr >> 16);
     84             dst[i + 2] = TILE(tmp, count);
     85             curr += step;
     86 
     87             tmp = (SkFixed)(curr >> 16);
     88             dst[i + 3] = TILE(tmp, count);
     89             curr += step;
     90         }
     91     }
     92 private:
     93     typedef InterpBench INHERITED;
     94 };
     95 
     96 class Fixed16D48Interp : public InterpBench {
     97 public:
     98     Fixed16D48Interp(void* param) : INHERITED(param, "16.48") {}
     99 
    100 protected:
    101     virtual void performTest(int16_t dst[], float fx, float dx, int count) SK_OVERRIDE {
    102         int64_t curr = (int64_t)(fx * 65536 * 655536 * 65536);
    103         int64_t step = (int64_t)(dx * 65536 * 655536 * 65536);
    104         SkFixed tmp;
    105         for (int i = 0; i < count; i += 4) {
    106             tmp = (SkFixed) (curr >> 32); dst[i + 0] = TILE(tmp, count); curr += step;
    107             tmp = (SkFixed) (curr >> 32); dst[i + 1] = TILE(tmp, count); curr += step;
    108             tmp = (SkFixed) (curr >> 32); dst[i + 2] = TILE(tmp, count); curr += step;
    109             tmp = (SkFixed) (curr >> 32); dst[i + 3] = TILE(tmp, count); curr += step;
    110         }
    111     }
    112 private:
    113     typedef InterpBench INHERITED;
    114 };
    115 
    116 class FloatInterp : public InterpBench {
    117 public:
    118     FloatInterp(void* param) : INHERITED(param, "float") {}
    119 
    120 protected:
    121     virtual void performTest(int16_t dst[], float fx, float dx, int count) SK_OVERRIDE {
    122         SkFixed tmp;
    123         for (int i = 0; i < count; i += 4) {
    124             tmp = SkFloatToFixed(fx); dst[i + 0] = TILE(tmp, count); fx += dx;
    125             tmp = SkFloatToFixed(fx); dst[i + 1] = TILE(tmp, count); fx += dx;
    126             tmp = SkFloatToFixed(fx); dst[i + 2] = TILE(tmp, count); fx += dx;
    127             tmp = SkFloatToFixed(fx); dst[i + 3] = TILE(tmp, count); fx += dx;
    128         }
    129     }
    130 private:
    131     typedef InterpBench INHERITED;
    132 };
    133 
    134 class DoubleInterp : public InterpBench {
    135 public:
    136     DoubleInterp(void* param) : INHERITED(param, "double") {}
    137 
    138 protected:
    139     virtual void performTest(int16_t dst[], float fx, float dx, int count) SK_OVERRIDE {
    140         double ffx = fx;
    141         double ddx = dx;
    142         SkFixed tmp;
    143         for (int i = 0; i < count; i += 4) {
    144             tmp = SkDoubleToFixed(ffx); dst[i + 0] = TILE(tmp, count); ffx += ddx;
    145             tmp = SkDoubleToFixed(ffx); dst[i + 1] = TILE(tmp, count); ffx += ddx;
    146             tmp = SkDoubleToFixed(ffx); dst[i + 2] = TILE(tmp, count); ffx += ddx;
    147             tmp = SkDoubleToFixed(ffx); dst[i + 3] = TILE(tmp, count); ffx += ddx;
    148         }
    149     }
    150 private:
    151     typedef InterpBench INHERITED;
    152 };
    153 
    154 ///////////////////////////////////////////////////////////////////////////////
    155 
    156 static SkBenchmark* M0(void* p) { return new Fixed16D16Interp(p); }
    157 static SkBenchmark* M1(void* p) { return new Fixed32D32Interp(p); }
    158 static SkBenchmark* M2(void* p) { return new Fixed16D48Interp(p); }
    159 static SkBenchmark* M3(void* p) { return new FloatInterp(p); }
    160 static SkBenchmark* M4(void* p) { return new DoubleInterp(p); }
    161 
    162 static BenchRegistry gReg0(M0);
    163 static BenchRegistry gReg1(M1);
    164 static BenchRegistry gReg2(M2);
    165 static BenchRegistry gReg3(M3);
    166 static BenchRegistry gReg4(M4);
    167