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add RP comparison for SkVM_Overhead

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Looks like ~50ns overhead for RP vs ~14,000ns for SkVM.

Change-Id: I85ef73d3387657b14615fcfa5cfd9df5c2325343
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/223302
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
This commit is contained in:
Mike Klein 2019-06-24 15:00:35 -04:00 committed by Skia Commit-Bot
parent 3a0e8ab85a
commit 1ae6ac81e6
1 changed files with 24 additions and 7 deletions
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31
bench/SkVMBench.cpp
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@ -129,18 +129,35 @@ DEF_BENCH(return (new SkVMBench{4096, I32_SWAR});)
class SkVM_Overhead : public Benchmark {
public:
SkVM_Overhead() {}
explicit SkVM_Overhead(bool rp) : fRP(rp) {}
private:
const char* onGetName() override { return "SkVM_Overhead"; }
const char* onGetName() override { return fRP ? "SkVM_Overhead_RP" : "SkVM_Overhead_VM"; }
bool isSuitableFor(Backend backend) override { return backend == kNonRendering_Backend; }
void onDraw(int loops, SkCanvas*) override {
while (loops --> 0) {
float dummy;
skvm::Program program = SrcoverBuilder_F32{}.done();
program.eval(0, &dummy, &dummy);
float dummy;
if (fRP) {
while (loops --> 0) {
SkRasterPipeline_<256> rp;
SkRasterPipeline_MemoryCtx src = { &dummy, 0},
dst = { &dummy, 0};
rp.append_load (SkColorType::kRGBA_F32_SkColorType, &src);
rp.append_load_dst(SkColorType::kRGBA_F32_SkColorType, &dst);
rp.append (SkRasterPipeline::srcover);
rp.append_store (SkColorType::kRGBA_F32_SkColorType, &dst);
(void)rp.compile();
}
} else {
while (loops --> 0) {
skvm::Program program = SrcoverBuilder_F32{}.done();
program.eval(0, &dummy, &dummy);
}
}
}
bool fRP;
};
DEF_BENCH(return new SkVM_Overhead;)
DEF_BENCH(return new SkVM_Overhead{ true};)
DEF_BENCH(return new SkVM_Overhead{false};)