blob: 8b69af7ea82cd276f82a04d08b06f7458e15f5bf [file] [log] [blame]
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <memory>
#include "bench/Benchmark.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkImage.h"
#include "include/core/SkSurface.h"
#include "include/utils/SkRandom.h"
/**
* Draws a small set of small images multiple times each with no overlaps so that each image could
* be batched. This was originally added to detect regressions as TextureOp is refactored to
* use "dynamic state" for texture bindings. Everything is kept small as we're mostly interested in
* CPU overhead.
*/
class ImageCycle : public Benchmark {
public:
/**
* imageCnt is the number of images and repeat cnt is how many times each image is drawn per
* logical "frame."
*/
ImageCycle(int imageCnt, int repeatCnt) : fImageCnt(imageCnt), fRepeatCnt(repeatCnt) {
fName.appendf("image_cycle_image_cnt_%d_repeat_cnt_%d", fImageCnt, fRepeatCnt);
}
bool isSuitableFor(Backend backend) override { return kGPU_Backend == backend; }
protected:
const char* onGetName() override { return fName.c_str(); }
void onPerCanvasPreDraw(SkCanvas* canvas) override {
auto ii = SkImageInfo::Make(kImageSize.fWidth, kImageSize.fHeight, kRGBA_8888_SkColorType,
kPremul_SkAlphaType, nullptr);
SkRandom random;
fImages = std::make_unique<sk_sp<SkImage>[]>(fImageCnt);
for (int i = 0; i < fImageCnt; ++i) {
auto surf = canvas->makeSurface(ii);
SkColor color = random.nextU();
surf->getCanvas()->clear(color);
SkPaint paint;
paint.setColor(~color);
paint.setBlendMode(SkBlendMode::kSrc);
surf->getCanvas()->drawRect(
SkRect::MakeLTRB(1, 1, kImageSize.fWidth - 1, kImageSize.fHeight - 1), paint);
fImages[i] = surf->makeImageSnapshot();
}
}
void onPerCanvasPostDraw(SkCanvas*) override { fImages.reset(); }
void onDraw(int loops, SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
static constexpr SkScalar kPad = 2;
// To avoid tripping up bounds tracking we position the draws such that all the
// draws of image 0 are above those of image 1, etc.
static const int imagesPerRow =
SkScalarFloorToInt(kDeviceSize.fWidth / (kImageSize.fWidth + kPad));
int rowsPerImage = SkScalarCeilToInt((SkScalar)fRepeatCnt / imagesPerRow);
for (int l = 0; l < loops; ++l) {
for (int r = 0; r < fRepeatCnt; ++r) {
for (int i = 0; i < fImageCnt; ++i) {
SkScalar imageYOffset = i * rowsPerImage * (kImageSize.fHeight + kPad);
SkScalar rowYOffset = (r / imagesPerRow) * (kImageSize.fHeight + kPad);
SkScalar x = (r % imagesPerRow) * (kImageSize.fWidth + kPad);
canvas->drawImage(fImages[i].get(), x, imageYOffset + rowYOffset,
SkSamplingOptions(), &paint);
}
}
// Prevent any batching between "frames".
if (auto surf = canvas->getSurface()) {
surf->flushAndSubmit();
}
}
}
private:
SkIPoint onGetSize() override { return {kDeviceSize.fWidth, kDeviceSize.fHeight}; }
inline static constexpr SkISize kImageSize{4, 4};
inline static constexpr SkISize kDeviceSize{64, 64};
std::unique_ptr<sk_sp<SkImage>[]> fImages;
SkString fName;
int fImageCnt;
int fRepeatCnt;
using INHERITED = Benchmark;
};
DEF_BENCH(return new ImageCycle(5, 10));