| /* |
| * 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/SkColorSpace.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) { |
| auto context = canvas->recordingContext(); |
| if (!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, |
| skgpu::Budgeted::kNo, |
| info, |
| 0, |
| kBottomLeft_GrSurfaceOrigin, |
| nullptr, |
| true); |
| } |
| |
| // Clear surface once: |
| fSurface->getCanvas()->clear(SK_ColorBLACK); |
| |
| SkSamplingOptions sampling(SkFilterMode::kLinear, |
| SkMipmapMode::kLinear); |
| SkPaint paint; |
| 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, sampling, &paint); |
| canvas->restore(); |
| } |
| } |
| |
| void onPerCanvasPostDraw(SkCanvas*) override { |
| fSurface.reset(nullptr); |
| } |
| |
| private: |
| using INHERITED = Benchmark; |
| }; |
| |
| // 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); ) |