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Added: Iter::view() and view(idx) benchmark
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@richardbiely
richardbiely committed Mar 4, 2024
1 parent 03a4e9d commit 8f54d58
Showing 1 changed file with 207 additions and 0 deletions.
207 changes: 207 additions & 0 deletions src/perf/iter/src/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,32 @@ constexpr uint32_t EntitiesPerArchetype = 1'000;

using TBenchmarkTypes = cnt::darray<ecs::Entity>;

struct Position {
float x, y, z;
};
struct Velocity {
float x, y, z;
};
struct Rotation {
float x, y, z, w;
};
struct Scale {
float x, y, z;
};
struct Direction {
float x, y, z;
};
struct Health {
int value;
int max;
};
struct IsEnemy {
bool value;
};
struct Dummy {
int value[24];
};

auto create_archetypes(ecs::World& w, uint32_t archetypes, uint32_t maxIdsPerArchetype) {
GAIA_ASSERT(archetypes > 0);
GAIA_ASSERT(maxIdsPerArchetype > 0);
Expand Down Expand Up @@ -85,6 +111,77 @@ void bench_query_each_iter(picobench::state& state, TQuery& query) {
}
}

template <uint32_t NViews, bool ViewWithIndex>
void bench_query_each_view(picobench::state& state, ecs::World& w) {
/* We want to benchmark the hot-path. In real-world scenarios queries are cached so cache them now */
auto q = w.query().all<Position>();
if constexpr (NViews > 1)
q.all<Velocity>();
if constexpr (NViews > 2)
q.all<Scale>();
if constexpr (NViews > 3)
q.all<Direction>();
if constexpr (NViews > 4)
q.all<Health>();

[[maybe_unused]] bool isEmpty = q.empty();
gaia::dont_optimize(isEmpty);

state.stop_timer();
for (auto _: state) {
(void)_;

state.stop_timer();
q.each([&](ecs::Iter& it) {
GAIA_EACH(it) {
state.start_timer();

if constexpr (ViewWithIndex) {
auto v1 = it.template view<Position>(0);
gaia::dont_optimize(v1);
if constexpr (NViews > 2) {
auto v2 = it.template view<Velocity>(1);
gaia::dont_optimize(v2);
}
if constexpr (NViews > 2) {
auto v3 = it.template view<Scale>(2);
gaia::dont_optimize(v3);
}
if constexpr (NViews > 3) {
auto v4 = it.template view<Direction>(3);
gaia::dont_optimize(v4);
}
if constexpr (NViews > 4) {
auto v5 = it.template view<Health>(4);
gaia::dont_optimize(v5);
}
} else {
auto v1 = it.template view<Position>();
gaia::dont_optimize(v1);
if constexpr (NViews > 2) {
auto v2 = it.template view<Velocity>();
gaia::dont_optimize(v2);
}
if constexpr (NViews > 2) {
auto v3 = it.template view<Scale>();
gaia::dont_optimize(v3);
}
if constexpr (NViews > 3) {
auto v4 = it.template view<Direction>();
gaia::dont_optimize(v4);
}
if constexpr (NViews > 4) {
auto v5 = it.template view<Health>();
gaia::dont_optimize(v5);
}
}

state.stop_timer();
}
});
}
}

template <bool UseCachedQuery, uint32_t QueryComponents>
void BM_BuildQuery(picobench::state& state) {
ecs::World w;
Expand Down Expand Up @@ -150,6 +247,88 @@ void BM_Each_Iter(picobench::state& state, uint32_t ArchetypeCount, uint32_t Max
bench_query_each_iter<IterKind>(state, query);
}

template <uint32_t NViews, bool ViewWithIndex>
void BM_Each_View(picobench::state& state) {
ecs::World w;

// Create some archetypes for a good measure
create_archetypes(w, 1000, 10);

// Register our components. The order is random so it does not match
// the order in queries.
{
(void)w.add<Scale>();
(void)w.add<Position>();
(void)w.add<Direction>();
(void)w.add<Health>();
(void)w.add<IsEnemy>();
(void)w.add<Velocity>();
(void)w.add<Rotation>();
}

// Create our native component archetypes
constexpr uint32_t NEntities = 1000;
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>();
w.copy_n(e, NEntities - 1);
}
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>()
.add<Rotation>();
w.copy_n(e, NEntities - 1);
}
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>()
.add<Rotation>()
.add<Scale>();
w.copy_n(e, NEntities - 1);
}
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>()
.add<Rotation>()
.add<Scale>()
.add<Direction>();
w.copy_n(e, NEntities - 1);
}
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>()
.add<Rotation>()
.add<Scale>()
.add<Direction>()
.add<Health>();
w.copy_n(e, NEntities - 1);
}
{
auto e = w.add();
w.build(e) //
.add<Position>()
.add<Velocity>()
.add<Rotation>()
.add<Scale>()
.add<Direction>()
.add<Health>()
.add<IsEnemy>();
w.copy_n(e, NEntities - 1);
}

bench_query_each_view<NViews, ViewWithIndex>(state, w);
}

#define DEFINE_EACH_ITER(IterKind, ArchetypeCount, MaxIdsPerArchetype, QueryComponents) \
void BM_Each_##IterKind##_##ArchetypeCount##_##QueryComponents(picobench::state& state) { \
BM_Each_Iter<true, QueryComponents, ecs::IterKind>(state, ArchetypeCount, MaxIdsPerArchetype); \
Expand All @@ -159,6 +338,11 @@ void BM_Each_Iter(picobench::state& state, uint32_t ArchetypeCount, uint32_t Max
BM_Each_Iter<false, QueryComponents, ecs::IterKind>(state, ArchetypeCount, MaxIdsPerArchetype); \
}

#define DEFINE_EACH_VIEW(NViews, ViewWithIndex) \
void BM_Each_View_##NViews##_##ViewWithIndex(picobench::state& state) { \
BM_Each_View<NViews, ViewWithIndex>(state); \
}

DEFINE_EACH_ITER(IterAll, 1, 1, 1)
DEFINE_EACH_ITER(Iter, 1, 1, 1)
DEFINE_EACH_U_ITER(Iter, 1, 1, 1)
Expand All @@ -179,6 +363,17 @@ DEFINE_EACH_U_ITER(Iter, 1000, 10, 3);
DEFINE_EACH_U_ITER(Iter, 1000, 10, 5);
DEFINE_EACH_U_ITER(Iter, 1000, 10, 7);

DEFINE_EACH_VIEW(1, false);
DEFINE_EACH_VIEW(1, true);
DEFINE_EACH_VIEW(2, false);
DEFINE_EACH_VIEW(2, true);
DEFINE_EACH_VIEW(3, false);
DEFINE_EACH_VIEW(3, true);
DEFINE_EACH_VIEW(4, false);
DEFINE_EACH_VIEW(4, true);
DEFINE_EACH_VIEW(5, false);
DEFINE_EACH_VIEW(5, true);

#define PICO_SETTINGS() iterations({8192}).samples(3)
#define PICO_SETTINGS_1() iterations({8192}).samples(1)
#define PICO_SETTINGS_SANI() iterations({8}).samples(1)
Expand Down Expand Up @@ -260,6 +455,18 @@ int main(int argc, char* argv[]) {
PICOBENCH_REG(BM_BuildQuery_U_5).PICO_SETTINGS().label("(u) 5 comps"); // uncached
PICOBENCH_REG(BM_BuildQuery_7).PICO_SETTINGS().label("7 comps");
PICOBENCH_REG(BM_BuildQuery_U_7).PICO_SETTINGS().label("(u) 7 comps"); // uncached

PICOBENCH_SUITE_REG("Iter view");
PICOBENCH_REG(BM_Each_View_1_false).PICO_SETTINGS().label("view 1 comp");
PICOBENCH_REG(BM_Each_View_1_true).PICO_SETTINGS().label("view 1 comp, idx");
PICOBENCH_REG(BM_Each_View_2_false).PICO_SETTINGS().label("view 2 comp");
PICOBENCH_REG(BM_Each_View_2_true).PICO_SETTINGS().label("view 2 comp, idx");
PICOBENCH_REG(BM_Each_View_3_false).PICO_SETTINGS().label("view 3 comp");
PICOBENCH_REG(BM_Each_View_3_true).PICO_SETTINGS().label("view 3 comp, idx");
PICOBENCH_REG(BM_Each_View_4_false).PICO_SETTINGS().label("view 4 comp");
PICOBENCH_REG(BM_Each_View_4_true).PICO_SETTINGS().label("view 4 comp, idx");
PICOBENCH_REG(BM_Each_View_5_false).PICO_SETTINGS().label("view 5 comp");
PICOBENCH_REG(BM_Each_View_5_true).PICO_SETTINGS().label("view 5 comp, idx");
}
}

Expand Down

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