struct ID3D12Device;
struct ID3D12DescriptorHeap;
struct ID3D12GraphicsCommandList;
struct D3D12_CPU_DESCRIPTOR_HANDLE;
struct D3D12_GPU_DESCRIPTOR_HANDLE;

// cmd_list is the command list that the implementation will use to render imgui draw lists.
// Before calling the render function, caller must prepare cmd_list by resetting it and setting the appropriate
// render target and descriptor heap that contains font_srv_cpu_desc_handle/font_srv_gpu_desc_handle.
// font_srv_cpu_desc_handle and font_srv_gpu_desc_handle are handles to a single SRV descriptor to use for the internal font texture.
IMGUI_IMPL_API bool     ImGui_ImplDX12_Init(ID3D12Device* device, int num_frames_in_flight, DXGI_FORMAT rtv_format, ID3D12DescriptorHeap* cbv_srv_heap,
                                            D3D12_CPU_DESCRIPTOR_HANDLE font_srv_cpu_desc_handle, D3D12_GPU_DESCRIPTOR_HANDLE font_srv_gpu_desc_handle);
IMGUI_IMPL_API void     ImGui_ImplDX12_Shutdown();
IMGUI_IMPL_API void     ImGui_ImplDX12_NewFrame();
IMGUI_IMPL_API void     ImGui_ImplDX12_RenderDrawData(ImDrawData* draw_data, ID3D12GraphicsCommandList* graphics_command_list);

// Use if you want to reset your rendering device without losing Dear ImGui state.
IMGUI_IMPL_API void     ImGui_ImplDX12_InvalidateDeviceObjects();
IMGUI_IMPL_API bool     ImGui_ImplDX12_CreateDeviceObjects();
