cb79393e88
This highlights overheads and instruction set switch costs. At time of writing on my HSW laptop, N = 16: 76ns N = 15: 291ns BUG=skia:6289 Change-Id: I01751e8f5ea6cf946e7710822d9bc742712553e9 Reviewed-on: https://skia-review.googlesource.com/8984 Reviewed-by: Mike Klein <mtklein@chromium.org> Commit-Queue: Mike Klein <mtklein@chromium.org>
93 lines
2.7 KiB
C++
93 lines
2.7 KiB
C++
/*
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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 "SkOpts.h"
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#include "SkRasterPipeline.h"
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static const int N = 15;
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static uint64_t dst[N]; // sRGB or F16
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static uint32_t src[N]; // sRGB
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static uint8_t mask[N]; // 8-bit linear
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// We'll build up a somewhat realistic useful pipeline:
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// - load srgb src
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// - scale src by 8-bit mask
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// - load srgb/f16 dst
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// - src = srcover(dst, src)
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// - store src back as srgb/f16
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template <bool kF16>
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class SkRasterPipelineBench : public Benchmark {
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public:
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bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
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const char* onGetName() override {
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switch ((int)kF16) {
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case 0: return "SkRasterPipeline_srgb";
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case 1: return "SkRasterPipeline_f16";
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}
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return "whoops";
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}
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void onDraw(int loops, SkCanvas*) override {
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void* mask_ctx = mask;
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void* src_ctx = src;
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void* dst_ctx = dst;
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SkRasterPipeline p;
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p.append(SkRasterPipeline::load_8888, &src_ctx);
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p.append_from_srgb(kUnpremul_SkAlphaType);
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p.append(SkRasterPipeline::scale_u8, &mask_ctx);
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p.append(SkRasterPipeline::move_src_dst);
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if (kF16) {
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p.append(SkRasterPipeline::load_f16, &dst_ctx);
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} else {
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p.append(SkRasterPipeline::load_8888, &dst_ctx);
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p.append_from_srgb(kPremul_SkAlphaType);
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}
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p.append(SkRasterPipeline::dstover);
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if (kF16) {
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p.append(SkRasterPipeline::store_f16, &dst_ctx);
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} else {
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p.append(SkRasterPipeline::to_srgb);
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p.append(SkRasterPipeline::store_8888, &dst_ctx);
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}
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while (loops --> 0) {
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p.run(0,N);
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}
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}
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};
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DEF_BENCH( return (new SkRasterPipelineBench< true>); )
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DEF_BENCH( return (new SkRasterPipelineBench<false>); )
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class SkRasterPipelineLegacyBench : public Benchmark {
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public:
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bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
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const char* onGetName() override {
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return "SkRasterPipeline_legacy";
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}
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void onDraw(int loops, SkCanvas*) override {
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void* src_ctx = src;
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void* dst_ctx = dst;
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SkRasterPipeline p;
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p.append(SkRasterPipeline::load_8888, &dst_ctx);
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p.append(SkRasterPipeline::move_src_dst);
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p.append(SkRasterPipeline::load_8888, &src_ctx);
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p.append(SkRasterPipeline::srcover);
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p.append(SkRasterPipeline::store_8888, &dst_ctx);
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while (loops --> 0) {
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p.run(0,N);
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}
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}
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};
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DEF_BENCH( return (new SkRasterPipelineLegacyBench); )
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