/// <summary>
/// Constructs a new ImGuiController.
/// </summary>
public ImGuiController(GraphicsDevice gd, OutputDescription outputDescription, WindowBase window)
{
#if DEBUG
using Profiler fullProfiler = new Profiler(GetType());
#endif
mainWindow = window;
Sdl2Window sdlWindow = window.SdlWindow;
windowWidth = sdlWindow.Width;
windowHeight = sdlWindow.Height;
ImPlot.CreateContext();
ImNodes.Initialize();
IntPtr imguiCtx = ImGui.CreateContext();
ImGui.SetCurrentContext(imguiCtx);
ImPlot.SetImGuiContext(imguiCtx);
ImNodes.SetImGuiContext(imguiCtx);
ImGuizmo.SetImGuiContext(imguiCtx);
ImGui.StyleColorsDark();
CreateDeviceResources(gd, outputDescription);
SetupImGuiIo(sdlWindow);
SetImGuiKeyMappings();
SetPerFrameImGuiData(1f / 60);
}
internal void Init()
{
Main = this;
Engine.MainWindow.TextInput += TextInput;
IntPtr context = ImGui.CreateContext();
ImGui.SetCurrentContext(context);
ImGuizmo.SetImGuiContext(context);
ImGuiIOPtr io = ImGui.GetIO();
io.Fonts.AddFontFromFileTTF(Path.Combine(AppContext.BaseDirectory, "EditorAssets/Fonts/Inconsolata.ttf"), 16);
io.BackendFlags |= ImGuiBackendFlags.HasMouseCursors | ImGuiBackendFlags.RendererHasVtxOffset;
io.ConfigFlags |= ImGuiConfigFlags.DockingEnable | ImGuiConfigFlags.NavEnableKeyboard;
io.ConfigWindowsResizeFromEdges = true;
SetStyle();
CreateDeviceResources();
SetKeyMappings();
SetPerFrameImGuiData(0.166666f);
ImGui.NewFrame();
ImGuizmo.BeginFrame();
frameBegun = true;
}
/// <summary>
/// Constructs a new ImGuiController.
/// </summary>
public unsafe ImGuiController(GraphicsDevice gd, Sdl2Window window, OutputDescription outputDescription, int width, int height)
{
_gd = gd;
_window = window;
_windowWidth = width;
_windowHeight = height;
//Create ImGui Context
var context = ImGui.CreateContext();
ImGui.SetCurrentContext(context);
//Create ImPlot Context
ImPlot.SetImGuiContext(context);
ImPlot.CreateContext();
//Create ImNodes Context
imnodes.SetImGuiContext(context);
imnodes.Initialize();
//Create ImGuizmo Context
ImGuizmo.SetImGuiContext(context);
ImGuiIOPtr io = ImGui.GetIO();
io.ConfigFlags |= ImGuiConfigFlags.DockingEnable;
io.ConfigFlags |= ImGuiConfigFlags.ViewportsEnable;
io.ConfigFlags |= ImGuiConfigFlags.NavEnableKeyboard;
io.ConfigFlags |= ImGuiConfigFlags.NavEnableGamepad;
ImGuiPlatformIOPtr platformIo = ImGui.GetPlatformIO();
ImGuiViewportPtr mainViewport = platformIo.Viewports[0];
mainViewport.PlatformHandle = window.Handle;
_mainViewportWindow = new VeldridImGuiWindow(gd, mainViewport, _window);
_createWindow = CreateWindow;
_destroyWindow = DestroyWindow;
_getWindowPos = GetWindowPos;
_showWindow = ShowWindow;
_setWindowPos = SetWindowPos;
_setWindowSize = SetWindowSize;
_getWindowSize = GetWindowSize;
_setWindowFocus = SetWindowFocus;
_getWindowFocus = GetWindowFocus;
_getWindowMinimized = GetWindowMinimized;
_setWindowTitle = SetWindowTitle;
platformIo.Platform_CreateWindow = Marshal.GetFunctionPointerForDelegate(_createWindow);
platformIo.Platform_DestroyWindow = Marshal.GetFunctionPointerForDelegate(_destroyWindow);
platformIo.Platform_ShowWindow = Marshal.GetFunctionPointerForDelegate(_showWindow);
platformIo.Platform_SetWindowPos = Marshal.GetFunctionPointerForDelegate(_setWindowPos);
platformIo.Platform_SetWindowSize = Marshal.GetFunctionPointerForDelegate(_setWindowSize);
platformIo.Platform_SetWindowFocus = Marshal.GetFunctionPointerForDelegate(_setWindowFocus);
platformIo.Platform_GetWindowFocus = Marshal.GetFunctionPointerForDelegate(_getWindowFocus);
platformIo.Platform_GetWindowMinimized = Marshal.GetFunctionPointerForDelegate(_getWindowMinimized);
platformIo.Platform_SetWindowTitle = Marshal.GetFunctionPointerForDelegate(_setWindowTitle);
ImGuiNative.ImGuiPlatformIO_Set_Platform_GetWindowPos(platformIo.NativePtr, Marshal.GetFunctionPointerForDelegate(_getWindowPos));
ImGuiNative.ImGuiPlatformIO_Set_Platform_GetWindowSize(platformIo.NativePtr, Marshal.GetFunctionPointerForDelegate(_getWindowSize));
unsafe
{
io.NativePtr->BackendPlatformName = (byte *)new FixedAsciiString("Veldrid.SDL2 Backend").DataPtr;
}
io.BackendFlags |= ImGuiBackendFlags.HasMouseCursors;
io.BackendFlags |= ImGuiBackendFlags.HasSetMousePos;
io.BackendFlags |= ImGuiBackendFlags.PlatformHasViewports;
io.BackendFlags |= ImGuiBackendFlags.RendererHasViewports;
io.Fonts.AddFontDefault();
CreateDeviceResources(gd, outputDescription);
SetKeyMappings();
SetPerFrameImGuiData(1f / 60f);
UpdateMonitors();
ImGui.NewFrame();
_frameBegun = true;
}
public unsafe override void OnAttach()
{
ImGuiContext = ImGui.CreateContext();
//ImGui.SetCurrentContext(context);
ImGuizmo.SetImGuiContext(ImGuiContext);
Application app = Application.Instance;
GLFW.Window windowHandle = app.Window.Handle;
if (ImGuiController.ImGui_ImplGlfw_InitForOpenGL(windowHandle, true))
{
Log.Core.Info("ImGui GLFW part initialized");
}
if (ImGuiController.ImGui_ImplOpenGL3_Init("#version 330 core"))
{
Log.Core.Info("ImGui OpenGL part initialized");
}
ImGuiIOPtr io = ImGui.GetIO();
io.DisplaySize = new Vector2(
app.Window.Width / Vector2.One.X,
app.Window.Height / Vector2.One.Y);
io.DisplayFramebufferScale = Vector2.One;
io.DeltaTime = 1.0f / 60.0f;
// base theme
//ImGui.StyleColorsClassic();
//ImGui.StyleColorsLight();
ImGui.StyleColorsDark();
SetDarkThemeColors();
io.ConfigFlags |= ImGuiConfigFlags.DockingEnable;
//io.ConfigFlags |= ImGuiConfigFlags.NavEnableKeyboard; // Enable Keyboard Controls
////io.ConfigFlags |= ImGuiConfigFlags.NavEnableGamepad; // Enable Gamepad Controls
//io.ConfigFlags |= ImGuiConfigFlags.DockingEnable; // Enable Docking
//io.ConfigFlags |= ImGuiConfigFlags.ViewportsEnable; // Enable Multi-Viewport / Platform Windows
////io.ConfigFlags |= ImGuiConfigFlags.ViewportsNoTaskBarIcons;
////io.ConfigFlags |= ImGuiConfigFlags.ViewportsNoMerge;
//io.BackendFlags |= ImGuiBackendFlags.HasMouseCursors;
//io.BackendFlags |= ImGuiBackendFlags.HasSetMousePos;
//io.Fonts.AddFontDefault(io.Fonts.AddFontFromFileTTF(FileEnvironment.ResourceFolder + "fonts/consola.ttf", 16.0f, null, io.Fonts.GetGlyphRangesChineseSimplifiedCommon()).ConfigData);
//ImFontAtlasPtr fonts = ImGui.GetIO().Fonts;
//io.Fonts.AddFontDefault();
//io.Fonts.AddFontFromFileTTF(FileEnvironment.ResourceFolder + "fonts/arial.ttf", 18.0f);
//io.Fonts.AddFontDefault(io.Fonts.AddFontFromFileTTF(FileEnvironment.ResourceFolder + "fonts/arial.ttf", 18.0f).ConfigData); //io.FontDefault = io.Fonts.AddFontFromFileTTF(FileEnvironment.ResourceFolder + "fonts/arial.ttf", 18.0f);
//
//
//
//ImGuiStylePtr style = ImGui.GetStyle();
//if ((io.ConfigFlags & ImGuiConfigFlags.ViewportsEnable) > 0)
//{
// style.WindowRounding = 0.0f;
// style.Colors[(int)ImGuiCol.WindowBg].W = 1.0f;
//}
//
}
public static unsafe void Initialise()
{
GL.LoadBindings(new SDLBindingsContext());
Context = ImGui.CreateContext();
ImGui.SetCurrentContext(Context);
ImGuizmo.SetImGuiContext(Context);
var io = ImGui.GetIO();
GL.Enable(EnableCap.DebugOutput);
GL.Enable(EnableCap.DebugOutputSynchronous);
GL.DebugMessageCallback(_DebugCb, IntPtr.Zero);
io.DisplaySize.X = Engine.Width;
io.DisplaySize.Y = Engine.Height;
io.KeyMap[(int)ImGuiKey.Tab] = (int)SC.SDL_SCANCODE_TAB;
io.KeyMap[(int)ImGuiKey.LeftArrow] = (int)SC.SDL_SCANCODE_LEFT;
io.KeyMap[(int)ImGuiKey.RightArrow] = (int)SC.SDL_SCANCODE_RIGHT;
io.KeyMap[(int)ImGuiKey.UpArrow] = (int)SC.SDL_SCANCODE_UP;
io.KeyMap[(int)ImGuiKey.DownArrow] = (int)SC.SDL_SCANCODE_DOWN;
io.KeyMap[(int)ImGuiKey.PageUp] = (int)SC.SDL_SCANCODE_PAGEUP;
io.KeyMap[(int)ImGuiKey.PageDown] = (int)SC.SDL_SCANCODE_PAGEDOWN;
io.KeyMap[(int)ImGuiKey.Home] = (int)SC.SDL_SCANCODE_HOME;
io.KeyMap[(int)ImGuiKey.End] = (int)SC.SDL_SCANCODE_END;
io.KeyMap[(int)ImGuiKey.Insert] = (int)SC.SDL_SCANCODE_INSERT;
io.KeyMap[(int)ImGuiKey.Delete] = (int)SC.SDL_SCANCODE_DELETE;
io.KeyMap[(int)ImGuiKey.Backspace] = (int)SC.SDL_SCANCODE_BACKSPACE;
io.KeyMap[(int)ImGuiKey.Space] = (int)SC.SDL_SCANCODE_SPACE;
io.KeyMap[(int)ImGuiKey.Enter] = (int)SC.SDL_SCANCODE_RETURN;
io.KeyMap[(int)ImGuiKey.Escape] = (int)SC.SDL_SCANCODE_ESCAPE;
io.KeyMap[(int)ImGuiKey.KeyPadEnter] = (int)SC.SDL_SCANCODE_KP_ENTER;
io.KeyMap[(int)ImGuiKey.A] = (int)SC.SDL_SCANCODE_A;
io.KeyMap[(int)ImGuiKey.C] = (int)SC.SDL_SCANCODE_C;
io.KeyMap[(int)ImGuiKey.V] = (int)SC.SDL_SCANCODE_V;
io.KeyMap[(int)ImGuiKey.X] = (int)SC.SDL_SCANCODE_X;
io.KeyMap[(int)ImGuiKey.Y] = (int)SC.SDL_SCANCODE_Y;
io.KeyMap[(int)ImGuiKey.Z] = (int)SC.SDL_SCANCODE_Z;
var maj = GL.GetInteger(GetPName.MajorVersion);
var min = GL.GetInteger(GetPName.MinorVersion);
Log.Info($"OpenGLManager: This appears to be OpenGL {maj}.{min}.");
var t = new GLVersion()
{
Major = maj,
Minor = min,
VersionString = $"{maj}.{min}"
};
Version = t;
if (Version.Major < 4 || (Version.Major == 4 && Version.Minor < 5))
{
// This is not OpenGL 4.5 or higher.
Log.Fatal("This version of OpenGL is too old! Luminal applications require at least GL 4.5.");
Log.Fatal("Showing message box and exiting.");
MessageBox.Error("Sorry, applications built with Luminal cannot run on your graphics card.\n" +
$"Your graphics card only supports OpenGL {Version.VersionString}, and at least OpenGL 4.5 is required.",
"Engine incompatible: OpenGL version too old");
Engine.Quit(1);
}
VtxBufSize = 10000;
IdxBufSize = 2000;
IG_VAO = new("ImGui");
IG_VAO.Bind();
VertexSource = File.ReadAllText("EngineResources/Shaders/2D/2D.vert");
FragSource = File.ReadAllText("EngineResources/Shaders/2D/2D.frag");
VS = new GLShader(VertexSource, GLShaderType.Vertex);
FS = new GLShader(FragSource, GLShaderType.Fragment);
VS.Compile();
FS.Compile();
ImGuiProgram = new GLShaderProgram().Attach(VS).Attach(FS).Link();
GLHelper.VertexBuffer("ImGui VBO", out VertexBuffer);
GLHelper.ElementBuffer("ImGui EBO", out IndexBuffer);
GL.NamedBufferData(VertexBuffer, VtxBufSize, IntPtr.Zero, BufferUsageHint.DynamicDraw);
GL.NamedBufferData(IndexBuffer, IdxBufSize, IntPtr.Zero, BufferUsageHint.DynamicDraw);
var va = IG_VAO.GLObject;
GL.VertexArrayVertexBuffer(va, 0, VertexBuffer, IntPtr.Zero, Unsafe.SizeOf <ImDrawVert>());
GL.VertexArrayElementBuffer(va, IndexBuffer);
GL.EnableVertexArrayAttrib(va, 0);
GL.VertexArrayAttribBinding(va, 0, 0);
GL.VertexArrayAttribFormat(va, 0, 2, VertexAttribType.Float, false, 0);
GL.EnableVertexArrayAttrib(va, 1);
GL.VertexArrayAttribBinding(va, 1, 0);
GL.VertexArrayAttribFormat(va, 1, 2, VertexAttribType.Float, false, 8);
GL.EnableVertexArrayAttrib(va, 2);
GL.VertexArrayAttribBinding(va, 2, 0);
GL.VertexArrayAttribFormat(va, 2, 4, VertexAttribType.UnsignedByte, true, 16);
_SetClipboard = SetClipboard;
io.SetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(_SetClipboard);
_GetClipboard = GetClipboard;
io.GetClipboardTextFn = Marshal.GetFunctionPointerForDelegate(_GetClipboard);
Initialised = true;
OnInitGL?.Invoke();
}
public static void SetContext()
{
ImGui.SetCurrentContext(Context);
ImGuizmo.SetImGuiContext(Context);
}