Fun menu :3

Signed-off-by: Slendi <slendi@socopon.com>

src/Application.cpp

@@ -224,6 +224,8 @@ Application::Application()
 	mouse_captured(true);
 
 	m_logger.info("App init done!");
+
+	m_renderer->set_antialiasing(VulkanRenderer::AntiAliasingKind::MSAA_4X);
 }
 
 Application::~Application()
@@ -307,6 +309,7 @@ auto Application::run() -> void
 			}
 			ImGui::PopStyleColor();
 
+			ImGui::SetNextWindowSize({ 300, -1 }, ImGuiCond_Once);
 			if (ImGui::Begin("Fun menu")) {
 				defer(ImGui::End());
 
@@ -319,10 +322,8 @@ auto Application::run() -> void
 				int selected_item {
 					static_cast<int>(m_renderer->antialiasing()),
 				};
-				int prev_selected_item { selected_item };
-				ImGui::Combo("Antialiasing", &selected_item, aa_items.data(),
-				    aa_items.size());
-				if (prev_selected_item != selected_item) {
+				if (ImGui::Combo("Antialiasing", &selected_item,
+				        aa_items.data(), aa_items.size())) {
 					m_renderer->set_antialiasing(
 					    static_cast<VulkanRenderer::AntiAliasingKind>(
 					        selected_item));
@@ -332,8 +333,6 @@ auto Application::run() -> void
 
 		ImGui::Render();
 
-		m_renderer->set_antialiasing(VulkanRenderer::AntiAliasingKind::MSAA_8X);
-
 		m_renderer->render([&](VulkanRenderer::GL &gl) {
 			auto view { smath::matrix_look_at(smath::Vec3 { 0.0f, 0.0f, 3.0f },
 				smath::Vec3 { 0.0f, 0.0f, 0.0f },

src/VulkanRenderer.cpp

@@ -9,6 +9,8 @@
 #include <optional>
 #include <print>
 #include <stdexcept>
+#include <type_traits>
+#include <utility>
 
 #include <SDL3/SDL_video.h>
 #include <SDL3/SDL_vulkan.h>
@@ -526,6 +528,13 @@ auto VulkanRenderer::resize(uint32_t width, uint32_t height) -> void
 }
 
 auto VulkanRenderer::set_antialiasing(AntiAliasingKind kind) -> void
+{
+	enqueue_render_command(RenderCommand {
+		RenderCommand::SetAntiAliasing { kind },
+	});
+}
+
+auto VulkanRenderer::apply_antialiasing(AntiAliasingKind kind) -> void
 {
 	auto requested_samples = [&](AntiAliasingKind aa) {
 		switch (aa) {
@@ -616,6 +625,33 @@ auto VulkanRenderer::set_antialiasing(AntiAliasingKind kind) -> void
 	pipelines_init();
 }
 
+auto VulkanRenderer::enqueue_render_command(RenderCommand &&command) -> void
+{
+	std::scoped_lock lock { m_command_mutex };
+	m_pending_render_commands.emplace_back(std::move(command));
+}
+
+auto VulkanRenderer::process_render_commands() -> void
+{
+	std::vector<RenderCommand> commands;
+	{
+		std::scoped_lock lock { m_command_mutex };
+		commands.swap(m_pending_render_commands);
+	}
+
+	for (auto &command : commands) {
+		std::visit(
+		    [&](auto &&payload) {
+			    using Payload = std::decay_t<decltype(payload)>;
+			    if constexpr (std::is_same_v<Payload,
+			                      RenderCommand::SetAntiAliasing>) {
+				    apply_antialiasing(payload.kind);
+			    }
+		    },
+		    command.payload);
+	}
+}
+
 auto VulkanRenderer::immediate_submit(
     std::function<void(vk::CommandBuffer cmd)> &&function,
     bool flush_frame_deletion_queue, bool clear_frame_descriptors) -> void
@@ -1155,6 +1191,8 @@ auto VulkanRenderer::render(std::function<void(GL &)> const &record) -> void
 		return;
 	}
 
+	process_render_commands();
+
 	auto &frame = m_vk.get_current_frame();
 	VK_CHECK(m_logger,
 	    m_device.waitForFences(frame.render_fence.get(), true, 1'000'000'000));

src/VulkanRenderer.h

@@ -2,7 +2,9 @@
 
 #include <array>
 #include <functional>
+#include <mutex>
 #include <optional>
+#include <variant>
 #include <vector>
 
 #include <SDL3/SDL_video.h>
@@ -156,6 +158,14 @@ struct VulkanRenderer {
 	GL gl;
 
 private:
+	struct RenderCommand {
+		struct SetAntiAliasing {
+			AntiAliasingKind kind;
+		};
+
+		std::variant<SetAntiAliasing> payload;
+	};
+
 	auto vk_init() -> void;
 	auto swapchain_init() -> void;
 	auto commands_init() -> void;
@@ -190,6 +200,9 @@ private:
 	auto create_buffer(size_t alloc_size, vk::BufferUsageFlags usage,
 	    VmaMemoryUsage memory_usage) -> AllocatedBuffer;
 	auto destroy_buffer(AllocatedBuffer const &buffer) -> void;
+	auto enqueue_render_command(RenderCommand &&command) -> void;
+	auto process_render_commands() -> void;
+	auto apply_antialiasing(AntiAliasingKind kind) -> void;
 
 	vk::Instance m_instance {};
 	vk::PhysicalDevice m_physical_device {};
@@ -267,6 +280,8 @@ private:
 
 	SDL_Window *m_window { nullptr };
 	Logger &m_logger;
+	std::mutex m_command_mutex;
+	std::vector<RenderCommand> m_pending_render_commands;
 };
 
 } // namespace Lunar