c0bd9f9fe5
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
88 lines
3.3 KiB
C++
88 lines
3.3 KiB
C++
/*
|
|
* Copyright 2013 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/SkString.h"
|
|
#include "include/private/SkColorData.h"
|
|
#include "include/utils/SkRandom.h"
|
|
|
|
template <bool kFast, bool kScale>
|
|
class FourByteInterpBench : public Benchmark {
|
|
public:
|
|
FourByteInterpBench() {
|
|
fName.set("four_byte_interp");
|
|
fName.append(kFast ? "_fast" : "_slow");
|
|
fName.append(kScale ? "_255" : "_256");
|
|
}
|
|
|
|
bool isSuitableFor(Backend backend) override {
|
|
return backend == kNonRendering_Backend;
|
|
}
|
|
|
|
const char* onGetName() override { return fName.c_str(); }
|
|
|
|
void onDelayedSetup() override {
|
|
// A handful of random srcs and dsts.
|
|
SkRandom rand;
|
|
for (int i = 0; i < kInputs; i++) {
|
|
fSrcs[i] = SkPreMultiplyColor(rand.nextU());
|
|
fDsts[i] = SkPreMultiplyColor(rand.nextU());
|
|
}
|
|
|
|
// We'll exhaustively test all scales instead of using random numbers.
|
|
for (int i = 0; i <= 256; i++) {
|
|
fScales[i] = i;
|
|
}
|
|
if (kScale) fScales[256] = 255; // We'll just do 255 twice if we're limited to [0,255].
|
|
}
|
|
|
|
void onDraw(int loops, SkCanvas*) override {
|
|
// We xor results of FourByteInterp into junk to make sure the function runs.
|
|
volatile SkPMColor junk = 0;
|
|
|
|
for (int loop = 0; loop < loops; loop++) {
|
|
for (int i = 0; i < kInputs; i++) {
|
|
for (size_t j = 0; j <= 256; j++) {
|
|
// Note: we really want to load src and dst here and not outside in the i-loop.
|
|
// If we put the loads there, a clever compiler will do the not-insignificant
|
|
// work in the FourByteInterps that depends only on src and dst outside this
|
|
// loop, so we'd only be benchmarking the back half of those functions that also
|
|
// depends on scale. Even here, these must be volatile arrays to prevent that
|
|
// clever compiler from hoisting the loads out of the loop on its own.
|
|
const SkPMColor src = fSrcs[i];
|
|
const SkPMColor dst = fDsts[i];
|
|
|
|
const unsigned scale = fScales[j];
|
|
|
|
if (kFast && kScale) {
|
|
junk ^= SkFastFourByteInterp(src, dst, scale);
|
|
} else if (kFast) {
|
|
junk ^= SkFastFourByteInterp256(src, dst, scale);
|
|
} else if (kScale) {
|
|
junk ^= SkFourByteInterp(src, dst, scale);
|
|
} else {
|
|
junk ^= SkFourByteInterp256(src, dst, scale);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
private:
|
|
SkString fName;
|
|
static const int kInputs = 10; // Arbitrary.
|
|
volatile unsigned fSrcs[kInputs];
|
|
volatile unsigned fDsts[kInputs];
|
|
unsigned fScales[257]; // We need space for [0, 256].
|
|
};
|
|
|
|
#define COMMA ,
|
|
DEF_BENCH(return (new FourByteInterpBench<true COMMA true>);)
|
|
DEF_BENCH(return (new FourByteInterpBench<true COMMA false>);)
|
|
DEF_BENCH(return (new FourByteInterpBench<false COMMA true>);)
|
|
DEF_BENCH(return (new FourByteInterpBench<false COMMA false>);)
|
|
#undef COMMA
|