blob: 4b7d2e8edd08a639dcd4ef678469e8d71f4df57d [file] [log] [blame]
* 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;
GrMipMapBench(int w, int h) : fW(w), fH(h) {
fName.printf("gr_mipmap_build_%dx%d", w, h);
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) {
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:
SkSamplingOptions sampling(SkFilterMode::kLinear,
SkPaint paint;
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->scale(0.1f, 0.1f);
canvas->drawImage(fSurface->makeImageSnapshot(), 0, 0, sampling, &paint);
void onPerCanvasPostDraw(SkCanvas*) override {
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); )