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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 "bench/Benchmark.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkSurface.h"
- class GrMipMapBench: public Benchmark {
- sk_sp<SkSurface> fSurface;
- SkString fName;
- const int fW, fH;
- public:
- GrMipMapBench(int w, int h) : fW(w), fH(h) {
- fName.printf("gr_mipmap_build_%dx%d", w, h);
- }
- protected:
- bool isSuitableFor(Backend backend) override {
- return kGPU_Backend == backend;
- }
- const char* onGetName() override { return fName.c_str(); }
- void onDraw(int loops, SkCanvas* canvas) override {
- if (!fSurface) {
- GrContext* context = canvas->getGrContext();
- if (nullptr == context) {
- return;
- }
- auto srgb = SkColorSpace::MakeSRGB();
- SkImageInfo info =
- SkImageInfo::Make(fW, fH, kRGBA_8888_SkColorType, kPremul_SkAlphaType, srgb);
- // We're benching the regeneration of the mip levels not the need to allocate them every
- // frame. Thus we create the surface with mips to begin with.
- fSurface = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info, 0,
- kBottomLeft_GrSurfaceOrigin, nullptr, true);
- }
- // Clear surface once:
- fSurface->getCanvas()->clear(SK_ColorBLACK);
- SkPaint paint;
- paint.setFilterQuality(kMedium_SkFilterQuality);
- paint.setColor(SK_ColorWHITE);
- for (int i = 0; i < loops; i++) {
- // Touch surface so mips are dirtied
- fSurface->getCanvas()->drawPoint(0, 0, paint);
- // Draw reduced version of surface to original canvas, to trigger mip generation
- canvas->save();
- canvas->scale(0.1f, 0.1f);
- canvas->drawImage(fSurface->makeImageSnapshot(), 0, 0, &paint);
- canvas->restore();
- }
- }
- void onPerCanvasPostDraw(SkCanvas*) override {
- fSurface.reset(nullptr);
- }
- private:
- typedef Benchmark INHERITED;
- };
- // Build variants that exercise the width and heights being even or odd at each level, as the
- // impl specializes on each of these.
- //
- DEF_BENCH( return new GrMipMapBench(511, 511); )
- DEF_BENCH( return new GrMipMapBench(512, 511); )
- DEF_BENCH( return new GrMipMapBench(511, 512); )
- DEF_BENCH( return new GrMipMapBench(512, 512); )
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