public GLOmnidirectionalShadowmap()
{
Cubemap = GL.GenTexture();
GL.BindTexture(TextureTarget.TextureCubeMap, Cubemap);
for (uint i = 0; i < 6; i++)
{
GL.TexImage2D((TextureTarget)((uint)TextureTarget.TextureCubeMapPositiveX + i),
0, PixelInternalFormat.DepthComponent, SHADOW_WIDTH, SHADOW_HEIGHT, 0,
PixelFormat.DepthComponent, PixelType.Float, IntPtr.Zero);
}
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMagFilter, (uint)TextureMagFilter.Linear);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureMinFilter, (uint)TextureMinFilter.Linear);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureWrapS, (uint)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureWrapT, (uint)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.TextureCubeMap, TextureParameterName.TextureWrapR, (uint)TextureWrapMode.ClampToEdge);
GL.CreateFramebuffers(1, out int DepthMapFBO);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, DepthMapFBO);
GL.FramebufferTexture(FramebufferTarget.Framebuffer, FramebufferAttachment.DepthAttachment,
Cubemap, 0);
// We dc abt the colour data
GL.DrawBuffer(DrawBufferMode.None);
GL.ReadBuffer(ReadBufferMode.None);
var vsource = File.ReadAllText("EngineResources/Shaders/Shading/shadow_omnidir.vert");
var fsource = File.ReadAllText("EngineResources/Shaders/Shading/shadow_omnidir.frag");
var gsource = File.ReadAllText("EngineResources/Shaders/Shading/shadow_omnidir.geom");
var vshader = new GLShader(vsource, GLShaderType.Vertex);
var fshader = new GLShader(fsource, GLShaderType.Fragment);
var gshader = new GLShader(gsource, GLShaderType.Geometry);
ShadowShader = new GLShaderProgram()
.Attach(vshader)
.Attach(fshader)
.Attach(gshader)
.Label("Omnidirectional Shadowmap Shader")
.Link();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0); // And unbind
}
public GLShaderProgram Attach(GLShader shader)
{
GL.AttachShader(GLObject, shader.GLObject);
return(this);
}
public static unsafe void Initialise()
{
GL.LoadBindings(new SDLBindingsContext());
Context = ImGui.CreateContext();
ImGui.SetCurrentContext(Context);
var io = ImGui.GetIO();
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}.");
VtxBufSize = 10000;
IdxBufSize = 2000;
IG_VAO = new("ImGui");
IG_VAO.Bind();
VertexSource = File.ReadAllText("EngineResources/2D.vert");
FragSource = File.ReadAllText("EngineResources/standard.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);
Initialised = true;
OnInitGL?.Invoke();
}
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();
}