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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkBenchmark.h"
#include "SkCanvas.h"
#include "SkRTree.h"
#include "SkRandom.h"
#include "SkString.h"
// confine rectangles to a smallish area, so queries generally hit something, and overlap occurs:
static const int GENERATE_EXTENTS = 1000;
static const int NUM_BUILD_RECTS = 500;
static const int NUM_QUERY_RECTS = 5000;
static const int NUM_QUERIES = 1000;
typedef SkIRect (*MakeRectProc)(SkRandom&, int, int);
// Time how long it takes to build an R-Tree either bulk-loaded or not
class BBoxBuildBench : public SkBenchmark {
public:
BBoxBuildBench(void* param, const char* name, MakeRectProc proc, bool bulkLoad,
SkBBoxHierarchy* tree)
: INHERITED(param)
, fTree(tree)
, fProc(proc)
, fBulkLoad(bulkLoad) {
fName.append("rtree_");
fName.append(name);
fName.append("_build");
if (fBulkLoad) {
fName.append("_bulk");
}
}
virtual ~BBoxBuildBench() {
delete fTree;
}
protected:
virtual const char* onGetName() {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
SkRandom rand;
for (int i = 0; i < SkBENCHLOOP(100); ++i) {
for (int j = 0; j < NUM_BUILD_RECTS; ++j) {
fTree->insert(reinterpret_cast<void*>(j), fProc(rand, j, NUM_BUILD_RECTS),
fBulkLoad);
}
fTree->flushDeferredInserts();
fTree->clear();
}
}
private:
SkBBoxHierarchy* fTree;
MakeRectProc fProc;
SkString fName;
bool fBulkLoad;
typedef SkBenchmark INHERITED;
};
// Time how long it takes to perform queries on an R-Tree, bulk-loaded or not
class BBoxQueryBench : public SkBenchmark {
public:
enum QueryType {
kSmall_QueryType, // small queries
kLarge_QueryType, // large queries
kRandom_QueryType,// randomly sized queries
kFull_QueryType // queries that cover everything
};
BBoxQueryBench(void* param, const char* name, MakeRectProc proc, bool bulkLoad,
QueryType q, SkBBoxHierarchy* tree)
: INHERITED(param)
, fTree(tree)
, fProc(proc)
, fBulkLoad(bulkLoad)
, fQuery(q) {
fName.append("rtree_");
fName.append(name);
fName.append("_query");
if (fBulkLoad) {
fName.append("_bulk");
}
SkRandom rand;
for (int j = 0; j < SkBENCHLOOP(NUM_QUERY_RECTS); ++j) {
fTree->insert(reinterpret_cast<void*>(j), fProc(rand, j,
SkBENCHLOOP(NUM_QUERY_RECTS)), fBulkLoad);
}
fTree->flushDeferredInserts();
}
virtual ~BBoxQueryBench() {
delete fTree;
}
protected:
virtual const char* onGetName() {
return fName.c_str();
}
virtual void onDraw(SkCanvas* canvas) {
SkRandom rand;
for (int i = 0; i < SkBENCHLOOP(NUM_QUERIES); ++i) {
SkTDArray<void*> hits;
SkIRect query;
switch(fQuery) {
case kSmall_QueryType:
query.fLeft = rand.nextU() % GENERATE_EXTENTS;
query.fTop = rand.nextU() % GENERATE_EXTENTS;
query.fRight = query.fLeft + (GENERATE_EXTENTS / 20);
query.fBottom = query.fTop + (GENERATE_EXTENTS / 20);
break;
case kLarge_QueryType:
query.fLeft = rand.nextU() % GENERATE_EXTENTS;
query.fTop = rand.nextU() % GENERATE_EXTENTS;
query.fRight = query.fLeft + (GENERATE_EXTENTS / 2);
query.fBottom = query.fTop + (GENERATE_EXTENTS / 2);
break;
case kFull_QueryType:
query.fLeft = -GENERATE_EXTENTS;
query.fTop = -GENERATE_EXTENTS;
query.fRight = 2 * GENERATE_EXTENTS;
query.fBottom = 2 * GENERATE_EXTENTS;
break;
default: // fallthrough
case kRandom_QueryType:
query.fLeft = rand.nextU() % GENERATE_EXTENTS;
query.fTop = rand.nextU() % GENERATE_EXTENTS;
query.fRight = query.fLeft + 1 + rand.nextU() % (GENERATE_EXTENTS / 2);
query.fBottom = query.fTop + 1 + rand.nextU() % (GENERATE_EXTENTS / 2);
break;
};
fTree->search(query, &hits);
}
}
private:
SkBBoxHierarchy* fTree;
MakeRectProc fProc;
SkString fName;
bool fBulkLoad;
QueryType fQuery;
typedef SkBenchmark INHERITED;
};
static SkIRect make_simple_rect(SkRandom&, int index, int numRects) {
SkIRect out = {0, 0, GENERATE_EXTENTS, GENERATE_EXTENTS};
return out;
}
static SkIRect make_concentric_rects_increasing(SkRandom&, int index, int numRects) {
SkIRect out = {0, 0, index + 1, index + 1};
return out;
}
static SkIRect make_concentric_rects_decreasing(SkRandom&, int index, int numRects) {
SkIRect out = {0, 0, numRects - index, numRects - index};
return out;
}
static SkIRect make_point_rects(SkRandom& rand, int index, int numRects) {
SkIRect out;
out.fLeft = rand.nextU() % GENERATE_EXTENTS;
out.fTop = rand.nextU() % GENERATE_EXTENTS;
out.fRight = out.fLeft + (GENERATE_EXTENTS / 200);
out.fBottom = out.fTop + (GENERATE_EXTENTS / 200);
return out;
}
static SkIRect make_random_rects(SkRandom& rand, int index, int numRects) {
SkIRect out;
out.fLeft = rand.nextS() % GENERATE_EXTENTS;
out.fTop = rand.nextS() % GENERATE_EXTENTS;
out.fRight = out.fLeft + 1 + rand.nextU() % (GENERATE_EXTENTS / 5);
out.fBottom = out.fTop + 1 + rand.nextU() % (GENERATE_EXTENTS / 5);
return out;
}
static SkIRect make_large_rects(SkRandom& rand, int index, int numRects) {
SkIRect out;
out.fLeft = rand.nextU() % GENERATE_EXTENTS;
out.fTop = rand.nextU() % GENERATE_EXTENTS;
out.fRight = out.fLeft + (GENERATE_EXTENTS / 3);
out.fBottom = out.fTop + (GENERATE_EXTENTS / 3);
return out;
}
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* Fact0(void* p) {
return SkNEW_ARGS(BBoxBuildBench, (p, "random", &make_random_rects, true,
SkRTree::Create(5, 16)));
}
static SkBenchmark* Fact1(void* p) {
return SkNEW_ARGS(BBoxBuildBench, (p, "random", &make_random_rects, false,
SkRTree::Create(5, 16)));
}
static SkBenchmark* Fact2(void* p) {
return SkNEW_ARGS(BBoxBuildBench, (p, "concentric",
&make_concentric_rects_increasing, true, SkRTree::Create(5, 16)));
}
static SkBenchmark* Fact3(void* p) {
return SkNEW_ARGS(BBoxQueryBench, (p, "random", &make_random_rects, true,
BBoxQueryBench::kRandom_QueryType, SkRTree::Create(5, 16)));
}
static SkBenchmark* Fact4(void* p) {
return SkNEW_ARGS(BBoxQueryBench, (p, "random", &make_random_rects, false,
BBoxQueryBench::kRandom_QueryType, SkRTree::Create(5, 16)));
}
static BenchRegistry gReg0(Fact0);
static BenchRegistry gReg1(Fact1);
static BenchRegistry gReg2(Fact2);
static BenchRegistry gReg3(Fact3);
static BenchRegistry gReg4(Fact4);
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