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Add four_byte_interp benches.

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Desktop:
running bench [640 480] four_byte_interp_slow_256    NONRENDERING: cmsecs =      6.18
running bench [640 480] four_byte_interp_slow_255    NONRENDERING: cmsecs =      6.83
running bench [640 480] four_byte_interp_fast_256    NONRENDERING: cmsecs =      5.02
running bench [640 480] four_byte_interp_fast_255    NONRENDERING: cmsecs =      5.88

N5:
running bench [640 480] four_byte_interp_slow_256    NONRENDERING: cmsecs =     22.84
running bench [640 480] four_byte_interp_slow_255    NONRENDERING: cmsecs =     25.11
running bench [640 480] four_byte_interp_fast_256    NONRENDERING: cmsecs =     18.89
running bench [640 480] four_byte_interp_fast_255    NONRENDERING: cmsecs =     22.32

BUG=
R=reed@google.com

Author: mtklein@google.com

Review URL: https://codereview.chromium.org/93933003

git-svn-id: http://skia.googlecode.com/svn/trunk@12444 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
commit-bot@chromium.org 2013-12-02 22:32:47 +00:00
parent 611fde182a
commit c25d2219cb
2 changed files with 57 additions and 0 deletions
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56
bench/ColorPrivBench.cpp Normal file
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@ -0,0 +1,56 @@
#include "SkBenchmark.h"
#include "SkColorPriv.h"
#include "SkRandom.h"
#include "SkString.h"
template <bool kFast, bool kScale>
class FourByteInterpBench : public SkBenchmark {
public:
FourByteInterpBench() {
fName.set("four_byte_interp");
fName.append(kFast ? "_fast" : "_slow");
fName.append(kScale ? "_255" : "_256");
// We'll exhaustively test all scales instead of using random numbers.
for (int i = 0; i <= 256; i++) {
fScales[i] = i;
}
if (kScale) fScales[256] = 255; // We'll just do 255 twice if we're limited to [0,255].
}
virtual bool isSuitableFor(Backend backend) SK_OVERRIDE {
return backend == kNonRendering_Backend;
}
virtual const char* onGetName() SK_OVERRIDE { return fName.c_str(); }
virtual void onDraw(SkCanvas*) SK_OVERRIDE {
const SkPMColor src = 0xAB998877, dst = 0x66334455;
volatile SkPMColor junk = 0;
for (int i = 0; i < 10*this->getLoops(); ++i) {
for (size_t j = 0; j <= SK_ARRAY_COUNT(fScales); j++) {
const unsigned scale = fScales[j];
if (kFast && kScale) {
junk ^= SkFastFourByteInterp(src, dst, scale);
} else if (kFast) {
junk ^= SkFastFourByteInterp256(src, dst, scale);
} else if (kScale) {
junk ^= SkFourByteInterp(src, dst, scale);
} else {
junk ^= SkFourByteInterp256(src, dst, scale);
}
}
}
}
private:
SkString fName;
unsigned fScales[257]; // We need space for [0, 256].
};
#define COMMA ,
DEF_BENCH( return SkNEW(FourByteInterpBench<true COMMA true>); )
DEF_BENCH( return SkNEW(FourByteInterpBench<true COMMA false>); )
DEF_BENCH( return SkNEW(FourByteInterpBench<false COMMA true>); )
DEF_BENCH( return SkNEW(FourByteInterpBench<false COMMA false>); )
#undef COMMA

1
gyp/bench.gyp
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@ -33,6 +33,7 @@
'../bench/ChromeBench.cpp',
'../bench/CmapBench.cpp',
'../bench/ColorFilterBench.cpp',
'../bench/ColorPrivBench.cpp',
'../bench/CoverageBench.cpp',
'../bench/DashBench.cpp',
'../bench/DecodeBench.cpp',