Esempio n. 1
0
        private unsafe void SetupPlatformIo(Sdl2Window sdlWindow)
        {
#if DEBUG
            using Profiler fullProfiler = new Profiler(GetType());
#endif
            ImGuiStylePtr style = ImGui.GetStyle();
            style.WindowRounding = 0.0f;
            style.Colors[(int)ImGuiCol.WindowBg].W = 1.0f;

            createWindow       = PlatformCreateWindow;
            destroyWindow      = PlatformDestroyWindow;
            showWindow         = PlatformShowWindow;
            getWindowPosition  = PlatformGetWindowPosition;
            setWindowPosition  = PlatformSetWindowPosition;
            getWindowSize      = PlatformGetWindowSize;
            setWindowSize      = PlatformSetWindowSize;
            setWindowTitle     = PlatformSetWindowTitle;
            getWindowFocus     = PlatformGetWindowFocus;
            setWindowFocus     = PlatformSetWindowFocus;
            getWindowMinimized = PlatformGetWindowMinimized;
            setWindowAlpha     = PlatformSetWindowAlpha;

            createVulkanSurface = PlatformCreateVkSurface;

            ImGuiPlatformIOPtr plIo = ImGui.GetPlatformIO();
            plIo.NativePtr->Platform_CreateWindow       = Marshal.GetFunctionPointerForDelegate(createWindow);
            plIo.NativePtr->Platform_DestroyWindow      = Marshal.GetFunctionPointerForDelegate(destroyWindow);
            plIo.NativePtr->Platform_ShowWindow         = Marshal.GetFunctionPointerForDelegate(showWindow);
            plIo.NativePtr->Platform_GetWindowPos       = Marshal.GetFunctionPointerForDelegate(getWindowPosition);
            plIo.NativePtr->Platform_SetWindowPos       = Marshal.GetFunctionPointerForDelegate(setWindowPosition);
            plIo.NativePtr->Platform_GetWindowSize      = Marshal.GetFunctionPointerForDelegate(getWindowSize);
            plIo.NativePtr->Platform_SetWindowSize      = Marshal.GetFunctionPointerForDelegate(setWindowSize);
            plIo.NativePtr->Platform_SetWindowTitle     = Marshal.GetFunctionPointerForDelegate(setWindowTitle);
            plIo.NativePtr->Platform_GetWindowMinimized = Marshal.GetFunctionPointerForDelegate(getWindowMinimized);
            plIo.NativePtr->Platform_GetWindowFocus     = Marshal.GetFunctionPointerForDelegate(getWindowFocus);
            plIo.NativePtr->Platform_SetWindowFocus     = Marshal.GetFunctionPointerForDelegate(setWindowFocus);
            plIo.NativePtr->Platform_SetWindowAlpha     = Marshal.GetFunctionPointerForDelegate(setWindowAlpha);
            plIo.NativePtr->Platform_CreateVkSurface    = Marshal.GetFunctionPointerForDelegate(createVulkanSurface);

            UpdateMonitors();

            ImGuiViewportPtr mainViewport = plIo.MainViewport;
            mainViewport.PlatformHandle   = sdlWindow.Handle;
            mainViewport.PlatformUserData = (IntPtr)mainWindow.GcHandle;
        }
Esempio n. 2
0
        /// <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;

            IntPtr context = ImGui.CreateContext();

            ImGui.SetCurrentContext(context);
            ImGuiIOPtr io = ImGui.GetIO();

            io.ConfigFlags |= ImGuiConfigFlags.DockingEnable;
            io.ConfigFlags |= ImGuiConfigFlags.ViewportsEnable;

            ImGuiPlatformIOPtr platformIO   = ImGui.GetPlatformIO();
            ImGuiViewportPtr   mainViewport = platformIO.MainViewport;

            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;
        }
Esempio n. 3
0
        /// <summary>
        /// Constructs a new ImGuiController.
        /// </summary>
        public unsafe ImGuiView(GraphicsDevice gd, Sdl2Window window, OutputDescription outputDescription, int width, int height)
        {
            _gd           = gd;
            _window       = window;
            _windowWidth  = width;
            _windowHeight = height;

            IntPtr context = ImGui.CreateContext();

            ImGui.SetCurrentContext(context);
            ImGuiIOPtr io = ImGui.GetIO();

            io.ConfigFlags |= ImGuiConfigFlags.DockingEnable;
            io.ConfigFlags |= ImGuiConfigFlags.ViewportsEnable;

            ImGuiPlatformIOPtr platformIO   = ImGui.GetPlatformIO();
            ImGuiViewportPtr   mainViewport = platformIO.MainViewport;

            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();

            // Create general resources
            _gd = gd;
            ResourceFactory factory = gd.ResourceFactory;

            _vertexBuffer      = factory.CreateBuffer(new BufferDescription(10000, BufferUsage.VertexBuffer | BufferUsage.Dynamic));
            _vertexBuffer.Name = "ImGui.NET Vertex Buffer";
            _indexBuffer       = factory.CreateBuffer(new BufferDescription(2000, BufferUsage.IndexBuffer | BufferUsage.Dynamic));
            _indexBuffer.Name  = "ImGui.NET Index Buffer";


            byte *pixels;
            int   fwidth, fheight, bytesPerPixel;

            io.Fonts.GetTexDataAsRGBA32(out pixels, out fwidth, out fheight, out bytesPerPixel);
            // Store our identifier
            io.Fonts.SetTexID(_fontAtlasID);

            _fontTexture = gd.ResourceFactory.CreateTexture(TextureDescription.Texture2D(
                                                                (uint)fwidth,
                                                                (uint)fheight,
                                                                1,
                                                                1,
                                                                PixelFormat.R8_G8_B8_A8_UNorm,
                                                                TextureUsage.Sampled));
            _fontTexture.Name = "ImGui.NET Font Texture";
            gd.UpdateTexture(
                _fontTexture,
                (IntPtr)pixels,
                (uint)(bytesPerPixel * fwidth * fheight),
                0,
                0,
                0,
                (uint)fwidth,
                (uint)fheight,
                1,
                0,
                0);
            _fontTextureView = gd.ResourceFactory.CreateTextureView(_fontTexture);

            io.Fonts.ClearTexData();


            _projMatrixBuffer      = factory.CreateBuffer(new BufferDescription(64, BufferUsage.UniformBuffer | BufferUsage.Dynamic));
            _projMatrixBuffer.Name = "ImGui.NET Projection Buffer";

            byte[] vertexShaderBytes   = LoadEmbeddedShaderCode(gd.ResourceFactory, "imgui-vertex", ShaderStages.Vertex);
            byte[] fragmentShaderBytes = LoadEmbeddedShaderCode(gd.ResourceFactory, "imgui-frag", ShaderStages.Fragment);
            _vertexShader   = factory.CreateShader(new ShaderDescription(ShaderStages.Vertex, vertexShaderBytes, "main"));
            _fragmentShader = factory.CreateShader(new ShaderDescription(ShaderStages.Fragment, fragmentShaderBytes, "main"));

            VertexLayoutDescription[] vertexLayouts = new VertexLayoutDescription[]
            {
                new VertexLayoutDescription(
                    new VertexElementDescription("in_position", VertexElementSemantic.Position, VertexElementFormat.Float2),
                    new VertexElementDescription("in_texCoord", VertexElementSemantic.TextureCoordinate, VertexElementFormat.Float2),
                    new VertexElementDescription("in_color", VertexElementSemantic.Color, VertexElementFormat.Byte4_Norm))
            };

            _layout = factory.CreateResourceLayout(new ResourceLayoutDescription(
                                                       new ResourceLayoutElementDescription("ProjectionMatrixBuffer", ResourceKind.UniformBuffer, ShaderStages.Vertex),
                                                       new ResourceLayoutElementDescription("MainSampler", ResourceKind.Sampler, ShaderStages.Fragment)));
            _textureLayout = factory.CreateResourceLayout(new ResourceLayoutDescription(
                                                              new ResourceLayoutElementDescription("MainTexture", ResourceKind.TextureReadOnly, ShaderStages.Fragment)));

            GraphicsPipelineDescription pd = new GraphicsPipelineDescription(
                BlendStateDescription.SingleAlphaBlend,
                new DepthStencilStateDescription(false, false, ComparisonKind.Always),
                new RasterizerStateDescription(FaceCullMode.None, PolygonFillMode.Solid, FrontFace.Clockwise, false, true),
                PrimitiveTopology.TriangleList,
                new ShaderSetDescription(vertexLayouts, new[] { _vertexShader, _fragmentShader }),
                new ResourceLayout[] { _layout, _textureLayout },
                outputDescription);

            _pipeline = factory.CreateGraphicsPipeline(ref pd);

            _mainResourceSet = factory.CreateResourceSet(new ResourceSetDescription(_layout,
                                                                                    _projMatrixBuffer,
                                                                                    gd.PointSampler));

            _fontTextureResourceSet = factory.CreateResourceSet(new ResourceSetDescription(_textureLayout, _fontTextureView));


            SetKeyMappings();

            SetPerFrameImGuiData(1f / 60f, width, height);
            UpdateMonitors();

            ImGui.NewFrame();
            _frameBegun = true;
        }