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79 lines
2.2 KiB
79 lines
2.2 KiB
/* |
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* Copyright 2016 Google Inc. |
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* |
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* Use of this source code is governed by a BSD-style license that can be |
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* found in the LICENSE file. |
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*/ |
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#include "Benchmark.h" |
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#include "SkCanvas.h" |
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#include "SkImage.h" |
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#include "SkPaint.h" |
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#include "SkSurface.h" |
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#if SK_SUPPORT_GPU |
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class GrMipMapBench: public Benchmark { |
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sk_sp<SkSurface> fSurface; |
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SkString fName; |
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const int fW, fH; |
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public: |
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GrMipMapBench(int w, int h) : fW(w), fH(h) { |
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fName.printf("gr_mipmap_build_%dx%d", w, h); |
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} |
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protected: |
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bool isSuitableFor(Backend backend) override { |
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return kGPU_Backend == backend; |
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} |
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const char* onGetName() override { return fName.c_str(); } |
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void onDraw(int loops, SkCanvas* canvas) override { |
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if (!fSurface) { |
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GrContext* context = canvas->getGrContext(); |
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if (nullptr == context) { |
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return; |
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} |
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auto srgb = SkColorSpace::MakeSRGB(); |
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SkImageInfo info = |
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SkImageInfo::Make(fW, fH, kRGBA_8888_SkColorType, kPremul_SkAlphaType, srgb); |
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fSurface = SkSurface::MakeRenderTarget(context, SkBudgeted::kNo, info); |
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} |
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// Clear surface once: |
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fSurface->getCanvas()->clear(SK_ColorBLACK); |
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SkPaint paint; |
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paint.setFilterQuality(kMedium_SkFilterQuality); |
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paint.setColor(SK_ColorWHITE); |
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for (int i = 0; i < loops; i++) { |
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// Touch surface so mips are dirtied |
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fSurface->getCanvas()->drawPoint(0, 0, paint); |
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// Draw reduced version of surface to original canvas, to trigger mip generation |
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canvas->save(); |
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canvas->scale(0.1f, 0.1f); |
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canvas->drawImage(fSurface->makeImageSnapshot(), 0, 0, &paint); |
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canvas->restore(); |
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} |
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} |
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void onPerCanvasPostDraw(SkCanvas*) override { |
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fSurface.reset(nullptr); |
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} |
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private: |
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typedef Benchmark INHERITED; |
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}; |
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// Build variants that exercise the width and heights being even or odd at each level, as the |
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// impl specializes on each of these. |
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// |
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DEF_BENCH( return new GrMipMapBench(511, 511); ) |
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DEF_BENCH( return new GrMipMapBench(512, 511); ) |
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DEF_BENCH( return new GrMipMapBench(511, 512); ) |
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DEF_BENCH( return new GrMipMapBench(512, 512); ) |
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#endif
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