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#include <benchmark/benchmark.h>
#include <mbgl/benchmark/stub_geometry_tile_feature.hpp>
#include <mbgl/style/function/composite_exponential_stops.hpp>
#include <mbgl/style/function/composite_function.hpp>
#include <mbgl/style/rapidjson_conversion.hpp>
#include <mbgl/style/conversion.hpp>
#include <mbgl/style/conversion/function.hpp>
#include <rapidjson/document.h>
using namespace mbgl;
using namespace mbgl::style;
static rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> createFunctionJSON(size_t stopCount) {
rapidjson::GenericDocument<rapidjson::UTF8<>, rapidjson::CrtAllocator> doc;
std::string stops = "[";
for (size_t outerStop = 0; outerStop < stopCount; outerStop++) {
for (size_t innerStop = 0; innerStop < stopCount; innerStop++) {
std::string zoom = std::to_string(24.0f / stopCount * outerStop);
std::string value = std::to_string(100.0f / stopCount * innerStop);
if (stops.size() > 1) stops += ",";
stops += R"([{"zoom":)" + zoom + R"(,"value":)" + value + "}, " + value + "]";
}
}
stops += "]";
doc.Parse<0>(R"({"type": "exponential", "base": 2, "stops": )" + stops + R"(, "property": "x"})");
return doc;
}
static void Parse_CompositeFunction(benchmark::State& state) {
size_t stopCount = state.range(0);
while (state.KeepRunning()) {
conversion::Error error;
state.PauseTiming();
auto doc = createFunctionJSON(stopCount);
state.ResumeTiming();
optional<CompositeFunction<float>> result = conversion::convert<style::CompositeFunction<float>, JSValue>(doc, error);
if (!result) {
state.SkipWithError(error.message.c_str());
}
}
state.SetLabel(std::to_string(stopCount).c_str());
}
static void Evaluate_CompositeFunction(benchmark::State& state) {
size_t stopCount = state.range(0);
auto doc = createFunctionJSON(stopCount);
conversion::Error error;
optional<CompositeFunction<float>> function = conversion::convert<CompositeFunction<float>, JSValue>(doc, error);
if (!function) {
state.SkipWithError(error.message.c_str());
}
while(state.KeepRunning()) {
float z = 24.0f * static_cast<float>(rand() % 100) / 100;
function->evaluate(z, StubGeometryTileFeature(PropertyMap { { "x", static_cast<int64_t>(rand() % 100) } }), -1.0f);
}
state.SetLabel(std::to_string(stopCount).c_str());
}
BENCHMARK(Parse_CompositeFunction)
->Arg(1)->Arg(2)->Arg(4)->Arg(6)->Arg(8)->Arg(10)->Arg(12);
BENCHMARK(Evaluate_CompositeFunction)
->Arg(1)->Arg(2)->Arg(4)->Arg(6)->Arg(8)->Arg(10)->Arg(12);
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