| /* |
| * 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 "bench/Benchmark.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkSurface.h" |
| #include "tools/ToolUtils.h" |
| |
| #include "include/gpu/GrContext.h" |
| #include "src/gpu/GrContextPriv.h" |
| |
| #include <utility> |
| |
| /** These benchmarks were designed to measure changes to GrResourceCache's replacement policy */ |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| // The width/height of the images to draw. The small size underestimates the value of a good |
| // replacement strategy since the texture uploads are quite small. However, the effects are still |
| // significant and this lets the benchmarks complete a lot faster, especially on mobile. |
| static constexpr int kS = 25; |
| |
| static void make_images(sk_sp<SkImage> imgs[], int cnt) { |
| for (int i = 0; i < cnt; ++i) { |
| SkBitmap bmp = |
| ToolUtils::create_checkerboard_bitmap(kS, kS, SK_ColorBLACK, SK_ColorCYAN, 10); |
| imgs[i] = SkImage::MakeFromBitmap(bmp); |
| } |
| } |
| |
| static void draw_image(SkCanvas* canvas, SkImage* img) { |
| // Make the paint transparent to avoid any issues of deferred tiler blending |
| // optmizations |
| SkPaint paint; |
| paint.setAlpha(0x10); |
| canvas->drawImage(img, 0, 0, &paint); |
| } |
| |
| void set_cache_budget(SkCanvas* canvas, int approxImagesInBudget) { |
| // This is inexact but we attempt to figure out a baseline number of resources GrContext needs |
| // to render an SkImage and add one additional resource for each image we'd like to fit. |
| GrContext* context = canvas->getGrContext(); |
| SkASSERT(context); |
| context->flushAndSubmit(); |
| context->priv().testingOnly_purgeAllUnlockedResources(); |
| sk_sp<SkImage> image; |
| make_images(&image, 1); |
| draw_image(canvas, image.get()); |
| context->flushAndSubmit(); |
| int baselineCount; |
| context->getResourceCacheUsage(&baselineCount, nullptr); |
| baselineCount -= 1; // for the image's textures. |
| context->setResourceCacheLimits(baselineCount + approxImagesInBudget, 1 << 30); |
| context->priv().testingOnly_purgeAllUnlockedResources(); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Tests repeatedly drawing the same set of images in each frame. Different instances of the bench |
| * run with different cache sizes and either repeat the image order each frame or use a random |
| * order. Every variation of this bench draws the same image set, only the budget and order of |
| * images differs. Since the total fill is the same they can be cross-compared. |
| */ |
| class ImageCacheBudgetBench : public Benchmark { |
| public: |
| /** budgetSize is the number of images that can fit in the cache. 100 images will be drawn. */ |
| ImageCacheBudgetBench(int budgetSize, bool shuffle) |
| : fBudgetSize(budgetSize) |
| , fShuffle(shuffle) |
| , fIndices(nullptr) { |
| float imagesOverBudget = float(kImagesToDraw) / budgetSize; |
| // Make the benchmark name contain the percentage of the budget that is used in each |
| // simulated frame. |
| fName.printf("image_cache_budget_%.0f%s", imagesOverBudget * 100, |
| (shuffle ? "_shuffle" : "")); |
| } |
| |
| bool isSuitableFor(Backend backend) override { return kGPU_Backend == backend; } |
| |
| protected: |
| const char* onGetName() override { |
| return fName.c_str(); |
| } |
| |
| void onPerCanvasPreDraw(SkCanvas* canvas) override { |
| GrContext* context = canvas->getGrContext(); |
| SkASSERT(context); |
| fOldBytes = context->getResourceCacheLimit(); |
| set_cache_budget(canvas, fBudgetSize); |
| make_images(fImages, kImagesToDraw); |
| if (fShuffle) { |
| SkRandom random; |
| fIndices.reset(new int[kSimulatedFrames * kImagesToDraw]); |
| for (int frame = 0; frame < kSimulatedFrames; ++frame) { |
| int* base = fIndices.get() + frame * kImagesToDraw; |
| for (int i = 0; i < kImagesToDraw; ++i) { |
| base[i] = i; |
| } |
| for (int i = 0; i < kImagesToDraw - 1; ++i) { |
| int other = random.nextULessThan(kImagesToDraw - i) + i; |
| using std::swap; |
| swap(base[i], base[other]); |
| } |
| } |
| } |
| } |
| |
| void onPerCanvasPostDraw(SkCanvas* canvas) override { |
| GrContext* context = canvas->getGrContext(); |
| SkASSERT(context); |
| context->setResourceCacheLimit(fOldBytes); |
| for (int i = 0; i < kImagesToDraw; ++i) { |
| fImages[i].reset(); |
| } |
| fIndices.reset(nullptr); |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| for (int i = 0; i < loops; ++i) { |
| for (int frame = 0; frame < kSimulatedFrames; ++frame) { |
| for (int j = 0; j < kImagesToDraw; ++j) { |
| int idx; |
| if (fShuffle) { |
| idx = fIndices[frame * kImagesToDraw + j]; |
| } else { |
| idx = j; |
| } |
| draw_image(canvas, fImages[idx].get()); |
| } |
| // Simulate a frame boundary by flushing. This should notify GrResourceCache. |
| canvas->flush(); |
| } |
| } |
| } |
| |
| private: |
| static constexpr int kImagesToDraw = 100; |
| static constexpr int kSimulatedFrames = 5; |
| |
| int fBudgetSize; |
| bool fShuffle; |
| SkString fName; |
| sk_sp<SkImage> fImages[kImagesToDraw]; |
| std::unique_ptr<int[]> fIndices; |
| size_t fOldBytes; |
| |
| typedef Benchmark INHERITED; |
| }; |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(105, false); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(90, false); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(80, false); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(50, false); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(105, true); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(90, true); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(80, true); ) |
| |
| DEF_BENCH( return new ImageCacheBudgetBench(50, true); ) |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Similar to above but changes between being over and under budget by varying the number of images |
| * rendered. This is not directly comparable to the non-dynamic benchmarks. |
| */ |
| class ImageCacheBudgetDynamicBench : public Benchmark { |
| public: |
| enum class Mode { |
| // Increase from min to max images drawn gradually over simulated frames and then back. |
| kPingPong, |
| // Alternate between under and over budget every other simulated frame. |
| kFlipFlop |
| }; |
| |
| ImageCacheBudgetDynamicBench(Mode mode) : fMode(mode) {} |
| |
| bool isSuitableFor(Backend backend) override { return kGPU_Backend == backend; } |
| |
| protected: |
| const char* onGetName() override { |
| switch (fMode) { |
| case Mode::kPingPong: |
| return "image_cache_budget_dynamic_ping_pong"; |
| case Mode::kFlipFlop: |
| return "image_cache_budget_dynamic_flip_flop"; |
| } |
| return ""; |
| } |
| |
| void onPerCanvasPreDraw(SkCanvas* canvas) override { |
| GrContext* context = canvas->getGrContext(); |
| SkASSERT(context); |
| context->getResourceCacheLimits(&fOldCount, &fOldBytes); |
| make_images(fImages, kMaxImagesToDraw); |
| set_cache_budget(canvas, kImagesInBudget); |
| } |
| |
| void onPerCanvasPostDraw(SkCanvas* canvas) override { |
| GrContext* context = canvas->getGrContext(); |
| SkASSERT(context); |
| context->setResourceCacheLimits(fOldCount, fOldBytes); |
| for (int i = 0; i < kMaxImagesToDraw; ++i) { |
| fImages[i].reset(); |
| } |
| } |
| |
| void onDraw(int loops, SkCanvas* canvas) override { |
| int delta = 0; |
| switch (fMode) { |
| case Mode::kPingPong: |
| delta = 1; |
| break; |
| case Mode::kFlipFlop: |
| delta = kMaxImagesToDraw - kMinImagesToDraw; |
| break; |
| } |
| for (int i = 0; i < loops; ++i) { |
| int imgsToDraw = kMinImagesToDraw; |
| for (int frame = 0; frame < kSimulatedFrames; ++frame) { |
| for (int j = 0; j < imgsToDraw; ++j) { |
| draw_image(canvas, fImages[j].get()); |
| } |
| imgsToDraw += delta; |
| if (imgsToDraw > kMaxImagesToDraw || imgsToDraw < kMinImagesToDraw) { |
| delta = -delta; |
| imgsToDraw += 2 * delta; |
| } |
| // Simulate a frame boundary by flushing. This should notify GrResourceCache. |
| canvas->flush(); |
| } |
| } |
| } |
| |
| private: |
| static constexpr int kImagesInBudget = 25; |
| static constexpr int kMinImagesToDraw = 15; |
| static constexpr int kMaxImagesToDraw = 35; |
| static constexpr int kSimulatedFrames = 80; |
| |
| Mode fMode; |
| sk_sp<SkImage> fImages[kMaxImagesToDraw]; |
| size_t fOldBytes; |
| int fOldCount; |
| |
| typedef Benchmark INHERITED; |
| }; |
| |
| DEF_BENCH( return new ImageCacheBudgetDynamicBench(ImageCacheBudgetDynamicBench::Mode::kPingPong); ) |
| DEF_BENCH( return new ImageCacheBudgetDynamicBench(ImageCacheBudgetDynamicBench::Mode::kFlipFlop); ) |