commit-bot@chromium.org | c25d221 | 2013-12-02 22:32:47 +0000 | [diff] [blame^] | 1 | #include "SkBenchmark.h" |
| 2 | #include "SkColorPriv.h" |
| 3 | #include "SkRandom.h" |
| 4 | #include "SkString.h" |
| 5 | |
| 6 | template <bool kFast, bool kScale> |
| 7 | class FourByteInterpBench : public SkBenchmark { |
| 8 | public: |
| 9 | FourByteInterpBench() { |
| 10 | fName.set("four_byte_interp"); |
| 11 | fName.append(kFast ? "_fast" : "_slow"); |
| 12 | fName.append(kScale ? "_255" : "_256"); |
| 13 | |
| 14 | // We'll exhaustively test all scales instead of using random numbers. |
| 15 | for (int i = 0; i <= 256; i++) { |
| 16 | fScales[i] = i; |
| 17 | } |
| 18 | if (kScale) fScales[256] = 255; // We'll just do 255 twice if we're limited to [0,255]. |
| 19 | } |
| 20 | |
| 21 | virtual bool isSuitableFor(Backend backend) SK_OVERRIDE { |
| 22 | return backend == kNonRendering_Backend; |
| 23 | } |
| 24 | |
| 25 | virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); } |
| 26 | |
| 27 | virtual void onDraw(SkCanvas*) SK_OVERRIDE { |
| 28 | const SkPMColor src = 0xAB998877, dst = 0x66334455; |
| 29 | volatile SkPMColor junk = 0; |
| 30 | for (int i = 0; i < 10*this->getLoops(); ++i) { |
| 31 | for (size_t j = 0; j <= SK_ARRAY_COUNT(fScales); j++) { |
| 32 | const unsigned scale = fScales[j]; |
| 33 | if (kFast && kScale) { |
| 34 | junk ^= SkFastFourByteInterp(src, dst, scale); |
| 35 | } else if (kFast) { |
| 36 | junk ^= SkFastFourByteInterp256(src, dst, scale); |
| 37 | } else if (kScale) { |
| 38 | junk ^= SkFourByteInterp(src, dst, scale); |
| 39 | } else { |
| 40 | junk ^= SkFourByteInterp256(src, dst, scale); |
| 41 | } |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | |
| 46 | private: |
| 47 | SkString fName; |
| 48 | unsigned fScales[257]; // We need space for [0, 256]. |
| 49 | }; |
| 50 | |
| 51 | #define COMMA , |
| 52 | DEF_BENCH( return SkNEW(FourByteInterpBench<true COMMA true>); ) |
| 53 | DEF_BENCH( return SkNEW(FourByteInterpBench<true COMMA false>); ) |
| 54 | DEF_BENCH( return SkNEW(FourByteInterpBench<false COMMA true>); ) |
| 55 | DEF_BENCH( return SkNEW(FourByteInterpBench<false COMMA false>); ) |
| 56 | #undef COMMA |