1 files changed, 163 insertions, 0 deletions
diff --git a/app/source/Cplt/Entrypoint/main.cpp b/app/source/Cplt/Entrypoint/main.cpp
new file mode 100644
index 0000000..8f67d32
--- /dev/null
+++ b/app/source/Cplt/Entrypoint/main.cpp
@@ -0,0 +1,163 @@
+#include <Cplt/Entrypoint/Backend.hpp>
+#include <Cplt/Model/GlobalStates.hpp>
+#include <Cplt/UI/UI.hpp>
+#include <Cplt/Utils/I18n.hpp>
+#include <Cplt/Utils/ScopeGuard.hpp>
+#include <Cplt/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 defined(_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 defined(__APPLE__)
+	// We currently only support using metal on macos
+	return RenderingBackend::CreateMetalBackend();
+#elif defined(__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);
+	}
+}
+
+#ifdef DOCTEST_CONFIG_DISABLE
+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;
+}
+#else
+#	define DOCTEST_CONFIG_IMPLEMENT_WITH_MAIN
+#	include <doctest/doctest.h>
+#endif