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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <tuple>
#include "Benchmark.h"
#include "Resources.h"
#include "SkCpu.h"
#include "SkImage.h"
#include "SkImage_Base.h"
#include "SkNx.h"
#include "SkOpts.h"
#include "SkPM4fPriv.h"
#include "SkString.h"
#define INNER_LOOPS 10
static inline void brute_srcover_srgb_srgb_1(uint32_t* dst, uint32_t src) {
auto d = Sk4f_fromS32(*dst),
s = Sk4f_fromS32( src);
*dst = Sk4f_toS32(s + d * (1.0f - s[3]));
}
static inline void srcover_srgb_srgb_1(uint32_t* dst, uint32_t src) {
if (src >= 0xFF000000) {
*dst = src;
return;
}
brute_srcover_srgb_srgb_1(dst, src);
}
static void brute_force_srcover_srgb_srgb(
uint32_t* dst, const uint32_t* const src, int ndst, const int nsrc) {
while (ndst > 0) {
int n = SkTMin(ndst, nsrc);
for (int i = 0; i < n; i++) {
brute_srcover_srgb_srgb_1(dst++, src[i]);
}
ndst -= n;
}
}
static void trivial_srcover_srgb_srgb(
uint32_t* dst, const uint32_t* const src, int ndst, const int nsrc) {
while (ndst > 0) {
int n = SkTMin(ndst, nsrc);
for (int i = 0; i < n; i++) {
srcover_srgb_srgb_1(dst++, src[i]);
}
ndst -= n;
}
}
static void best_non_simd_srcover_srgb_srgb(
uint32_t* dst, const uint32_t* const src, int ndst, const int nsrc) {
uint64_t* ddst = reinterpret_cast<uint64_t*>(dst);
auto srcover_srgb_srgb_2 = [](uint32_t* dst, const uint32_t* src) {
srcover_srgb_srgb_1(dst++, *src++);
srcover_srgb_srgb_1(dst, *src);
};
while (ndst >0) {
int count = SkTMin(ndst, nsrc);
ndst -= count;
const uint64_t* dsrc = reinterpret_cast<const uint64_t*>(src);
const uint64_t* end = dsrc + (count >> 1);
do {
if ((~*dsrc & 0xFF000000FF000000) == 0) {
do {
*ddst++ = *dsrc++;
} while (dsrc < end && (~*dsrc & 0xFF000000FF000000) == 0);
} else if ((*dsrc & 0xFF000000FF000000) == 0) {
do {
dsrc++;
ddst++;
} while (dsrc < end && (*dsrc & 0xFF000000FF000000) == 0);
} else {
srcover_srgb_srgb_2(reinterpret_cast<uint32_t*>(ddst++),
reinterpret_cast<const uint32_t*>(dsrc++));
}
} while (dsrc < end);
if ((count & 1) != 0) {
uint32_t s1;
memcpy(&s1, dsrc, 4);
srcover_srgb_srgb_1(reinterpret_cast<uint32_t*>(ddst), s1);
}
}
}
class SrcOverVSkOptsBruteForce {
public:
static SkString Name() { return SkString{"VSkOptsBruteForce"}; }
static void BlendN(uint32_t* dst, const uint32_t* src, int count) {
brute_force_srcover_srgb_srgb(dst, src, count, count);
}
};
class SrcOverVSkOptsTrivial {
public:
static SkString Name() { return SkString{"VSkOptsTrivial"}; }
static void BlendN(uint32_t* dst, const uint32_t* src, int count) {
trivial_srcover_srgb_srgb(dst, src, count, count);
}
};
class SrcOverVSkOptsNonSimdCore {
public:
static SkString Name() { return SkString{"VSkOptsNonSimdCore"}; }
static void BlendN(uint32_t* dst, const uint32_t* src, int count) {
best_non_simd_srcover_srgb_srgb(dst, src, count, count);
}
};
class SrcOverVSkOptsDefault {
public:
static SkString Name() { return SkString{"VSkOptsDefault"}; }
static void BlendN(uint32_t* dst, const uint32_t* src, int count) {
SkOpts::srcover_srgb_srgb(dst, src, count, count);
}
};
///////////////////////////////////////////////////////////////////////////////////////////////////
template <typename Blender>
class LinearSrcOverBench : public Benchmark {
public:
LinearSrcOverBench(const char* fileName) : fFileName(fileName) {
fName = "LinearSrcOver_";
fName.append(fileName);
fName.append(Blender::Name());
}
protected:
bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
const char* onGetName() override { return fName.c_str(); }
void onPreDraw(SkCanvas*) override {
if (!fPixmap.addr()) {
sk_sp<SkImage> image = GetResourceAsImage(fFileName.c_str());
SkBitmap bm;
SkColorSpace* legacyColorSpace = nullptr;
if (!as_IB(image)->getROPixels(&bm, legacyColorSpace)) {
SkFAIL("Could not read resource");
}
bm.peekPixels(&fPixmap);
fCount = fPixmap.rowBytesAsPixels();
fDst.reset(fCount);
sk_bzero(fDst.get(), fPixmap.rowBytes());
}
}
void onDraw(int loops, SkCanvas*) override {
SkASSERT(fPixmap.colorType() == kN32_SkColorType);
const int width = fPixmap.rowBytesAsPixels();
for (int i = 0; i < loops * INNER_LOOPS; ++i) {
const uint32_t* src = fPixmap.addr32();
for (int y = 0; y < fPixmap.height(); y++) {
Blender::BlendN(fDst.get(), src, width);
src += width;
}
}
}
void onPostDraw(SkCanvas*) override {
// Make sure the compiler does not optimize away the operation.
volatile uint32_t v = 0;
for (int i = 0; i < fCount; i++) {
v ^= fDst[i];
}
}
private:
int fCount;
SkAutoTArray<uint32_t> fDst;
SkString fFileName;
SkString fName;
SkPixmap fPixmap;
typedef Benchmark INHERITED;
};
#define BENCHES(fileName) \
DEF_BENCH( return new LinearSrcOverBench<SrcOverVSkOptsBruteForce>(fileName); ) \
DEF_BENCH( return new LinearSrcOverBench<SrcOverVSkOptsTrivial>(fileName); ) \
DEF_BENCH( return new LinearSrcOverBench<SrcOverVSkOptsNonSimdCore>(fileName); ) \
DEF_BENCH( return new LinearSrcOverBench<SrcOverVSkOptsDefault>(fileName); )
BENCHES("yellow_rose.png")
BENCHES("baby_tux.png")
BENCHES("plane.png")
BENCHES("mandrill_512.png")
BENCHES("iconstrip.png")
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