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#pragma once
#include <glm/glm.hpp>
#include <functional>
#include <string>
// Live-window Vulkan backend: owns the instance, surface, device, swapchain,
// render pass, framebuffers and per-frame synchronization, and drives the
// acquire -> record -> submit -> present loop. Pure-C++ header (no vulkan.h /
// glfw leak); the GLFW window is passed as an opaque handle.
namespace Donut
{
// Must be called BEFORE glfwInit() when the Vulkan API is selected: points
// GLFW at the loader the app links against (GLFW's own dlopen fails on
// macOS/Homebrew) and configures the MoltenVK ICD / layer paths.
auto vulkan_prepare_glfw() -> void;
class VulkanRenderer
{
public:
VulkanRenderer();
~VulkanRenderer();
// glfwWindow must be a GLFW window created with GLFW_NO_API.
auto init(void* glfwWindow, int width, int height) -> bool;
auto shutdown() -> void;
// Creates the ImGui context + Vulkan/GLFW backends. Call after init().
auto init_im_gui() -> bool;
// Renders + presents one frame: clears to clearColor, then (if init_im_gui
// ran) opens an ImGui frame, invokes buildUI to populate it, and draws it.
auto draw_frame(const glm::vec4& clearColor, const std::function<void()>& buildUI = {}) -> void;
auto on_resize(int width, int height) -> void;
// Rebuilds the starfield environment cubemap from another equirect .hdr
// at runtime (device-idle teardown + rebuild + descriptor rewrite).
// No-op if path is already the active HDRI.
auto set_hdri(const std::string& path) -> void;
// Filesystem path of the HDRI currently backing the cubemap.
auto current_hdri() const -> const std::string&;
// Free-fly (WASD + mouse-look) camera vs the default orbital camera.
// Enabling seeds the fly pose from the current orbital framing (no jump).
auto set_free_fly(bool enabled) -> void;
auto is_free_fly() const -> bool;
// Switch between the black-hole geodesic view and the world-builder scene
// view (grid/sphere/skybox drawn with real Vulkan geometry pipelines).
auto set_scene_mode(bool enabled) -> void;
auto is_scene_mode() const -> bool;
private:
struct Impl;
Impl* m_impl = nullptr;
};
}
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