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#include "Entrypoint/Backend.hpp"
#include "Model/GlobalStates.hpp"
#include "UI/UI.hpp"
#include "Utils/I18n.hpp"
#include "Utils/ScopeGuard.hpp"
#include "Utils/Sigslot.hpp"
#include <IconsFontAwesome.h>
#include <imgui.h>
#include <argparse/argparse.hpp>
#include <filesystem>
#include <iostream>
#include <memory>
#include <stdexcept>
#include <string>
#include <string_view>
namespace fs = std::filesystem;
using namespace std::literals::string_literals;
using namespace std::literals::string_view_literals;
static std::unique_ptr<RenderingBackend> CreateDefaultBackend()
{
#if PLATFORM_WIN32
# if BUILD_CORE_WITH_DX12_BACKEND
if (auto backend = RenderingBackend::CreateDx12Backend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_DX11_BACKEND
if (auto backend = RenderingBackend::CreateDx11Backend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_VULKAN_BACKEND
if (auto backend = RenderingBackend::CreateVulkanBackend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_OPENGL3_BACKEND
if (auto backend = RenderingBackend::CreateOpenGL3Backend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_OPENGL2_BACKEND
if (auto backend = RenderingBackend::CreateOpenGL2Backend()) {
return backend;
}
# endif
#elif PLATFORM_MACOS
// We currently only support using metal on macos
return RenderingBackend::CreateMetalBackend();
#elif PLATFORM_LINUX
# if BUILD_CORE_WITH_VULKAN_BACKEND
if (auto backend = RenderingBackend::CreateVulkanBackend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_OPENGL3_BACKEND
if (auto backend = RenderingBackend::CreateOpenGL3Backend()) {
return backend;
}
# endif
# if BUILD_CORE_WITH_OPENGL2_BACKEND
if (auto backend = RenderingBackend::CreateOpenGL2Backend()) {
return backend;
}
# endif
#endif
return nullptr;
}
static std::unique_ptr<RenderingBackend> CreateBackend(std::string_view option)
{
if (option == "default") {
return CreateDefaultBackend();
} else if (option == "opengl2") {
return RenderingBackend::CreateOpenGL2Backend();
} else if (option == "opengl3") {
return RenderingBackend::CreateOpenGL3Backend();
} else if (option == "vulkan") {
return RenderingBackend::CreateVulkanBackend();
} else if (option == "dx11") {
return RenderingBackend::CreateDx11Backend();
} else if (option == "dx12") {
return RenderingBackend::CreateDx12Backend();
} else if (option == "metal") {
return RenderingBackend::CreateMetalBackend();
} else {
std::string message;
message += "Unknown backend '";
message += option;
message += "'.\n";
throw std::runtime_error(message);
}
}
int main(int argc, char* argv[])
{
argparse::ArgumentParser parser;
parser.add_argument("--global-data-directory")
.help("Directory in which global data (such as recently used projects) are saved to. Use 'default' to use the default directory on each platform.")
.default_value("default"s);
parser.add_argument("--rendering-backend")
.help("Which rendering backend to use. If equals 'default', the preferred API for each platform will be used")
.default_value("default"s);
try {
parser.parse_args(argc, argv);
} catch (const std::runtime_error& error) {
std::cout << error.what() << '\n';
std::cout << parser;
return -1;
}
auto backendOption = parser.get<std::string>("--rendering-backend");
auto backend = CreateBackend(backendOption);
auto& io = ImGui::GetIO();
// Disable saving window positions
io.IniFilename = nullptr;
// Disable log (dump widget tree) file, we don't trigger it but just to be safe
io.LogFilename = nullptr;
// Light mode because all major OS's default theme is white
// TODO follow system theme
ImGui::StyleColorsLight();
// Configure default fonts
{
// Includes latin alphabet, although for some reason smaller than if rendered using 18 point NotoSans regular
io.Fonts->AddFontFromFileTTF("fonts/NotoSansSC-Regular.otf", 18, nullptr, io.Fonts->GetGlyphRangesChineseFull());
ImWchar iconRanges[] = { ICON_MIN_FA, ICON_MAX_FA };
ImFontConfig config;
config.MergeMode = true;
io.Fonts->AddFontFromFileTTF("fonts/FontAwesome5-Solid.otf", 14, &config, iconRanges);
}
auto dataDirOption = parser.get<std::string>("--global-data-directory");
if (dataDirOption == "default") {
GlobalStates::Init();
} else {
fs::path path(dataDirOption);
GlobalStates::Init(std::move(path));
}
DEFER
{
GlobalStates::Shutdown();
};
// Main loop
backend->RunUntilWindowClose(&UI::MainWindow);
return 0;
}
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