public unsafe GLTexture(string name, SDL2.SDL.SDL_Surface source)
{
Name = name;
Width = source.w;
Height = source.h;
GLHelper.Texture(TextureTarget.Texture2D, name, out int gt);
GL.BindTexture(TextureTarget.Texture2D, gt);
GL.TextureStorage2D(gt, 1, SizedInternalFormat.Rgba16, Width, Height);
var fmt = PixelInternalFormat.Rgb;
var surfmt = (SDL2.SDL.SDL_PixelFormat *)(source.format.ToPointer());
if (surfmt->BytesPerPixel == 4)
{
// We're in RGBA land
fmt = PixelInternalFormat.Rgba;
}
GL.TexImage2D(TextureTarget.Texture2D, 0, fmt, Width, Height, 0, (PixelFormat)fmt, PixelType.UnsignedByte, source.pixels);
GLObject = gt;
SetMinFilter(TextureMinFilter.Nearest);
SetMagFilter(TextureMagFilter.Nearest);
}
public void Rotate(Vector3 eulers)
{
var eul = GLHelper.V3DegRad(eulers);
var q = Quaternion.FromEulerAngles(eul);
Quat *= q;
}
public void RenderToDepth(System.Numerics.Vector3 LightPos)
{
GL.Viewport(0, 0, SHADOW_WIDTH, SHADOW_HEIGHT);
var aspect = (float)SHADOW_WIDTH / SHADOW_HEIGHT;
GL.BindFramebuffer(FramebufferTarget.Framebuffer, DepthMapFBO);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
var near = 1.0f;
var far = 25.0f;
Matrix4 shadProj = Matrix4.CreatePerspectiveFieldOfView(
GLHelper.DegRad(90.0f), aspect, near, far); // THIS NEEDS TO BE 90! I might make it a var anyway for shits and giggles
List <Matrix4> Transforms = new();
Vector3 right = new(1.0f, 0.0f, 0.0f);
Vector3 left = new(-1.0f, 0.0f, 0.0f);
Vector3 up = new(0.0f, 1.0f, 0.0f);
Vector3 down = new(0.0f, -1.0f, 0.0f);
Vector3 forward = new(0.0f, 0.0f, 1.0f);
Vector3 back = new(0.0f, 0.0f, -1.0f);
var lptk = LightPos.ToOpenTK();
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + right, down));
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + left, down));
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + up, forward));
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + down, back));
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + forward, down));
Transforms.Add(
shadProj * Matrix4.LookAt(
lptk, lptk + back, down));
GL.BindTexture(TextureTarget.TextureCubeMap, Cubemap);
ECSScene.ExplicitRender();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
}
public GLTexture(string name, int w, int h, IntPtr data)
{
Name = name;
Width = w;
Height = h;
GLHelper.Texture(TextureTarget.Texture2D, name, out int gt);
GL.TextureStorage2D(gt, 1, SizedInternalFormat.Rgba16, w, h);
GL.TextureSubImage2D(gt, 0, 0, 0, w, h, PixelFormat.Bgra, PixelType.UnsignedByte, data);
GLObject = gt;
SetMinFilter(TextureMinFilter.Nearest);
SetMagFilter(TextureMagFilter.Nearest);
}
public GLTexture(string name, Bitmap bmp)
{
GLHelper.Texture(TextureTarget.Texture2D, name, out int obj);
GLObject = obj;
Bind();
var ir = new Rectangle(0, 0, bmp.Width, bmp.Height);
var data = bmp.LockBits(ir, ImageLockMode.ReadOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
var fmt = PixelInternalFormat.Rgba;
GL.TexImage2D(TextureTarget.Texture2D, 0, fmt, bmp.Width, bmp.Height, 0,
PixelFormat.Bgra, PixelType.UnsignedByte, data.Scan0);
bmp.UnlockBits(data);
SetMinFilter(TextureMinFilter.Linear);
SetMagFilter(TextureMagFilter.Linear);
SetWrappingRules(TextureWrapMode.Repeat);
}
public GLVertexArrayObject(string name)
{
GLObject = GL.GenVertexArray();
GLHelper.LabelObj(ObjectLabelIdentifier.VertexArray, GLObject, $"VAO: {name}");
}
public Matrix4 Projection()
{
return(Matrix4.CreatePerspectiveFieldOfView(GLHelper.DegRad(FieldOfView), Engine.Width / Engine.Height, 0.1f, 1000f));
}
public GLShaderProgram Label(string name)
{
GLHelper.LabelObj(ObjectLabelIdentifier.Program, GLObject, name);
return(this);
}
public GLUIntBuffer(string name)
{
GLObject = GL.GenBuffer();
GLHelper.LabelObj(ObjectLabelIdentifier.Buffer, GLObject, $"UIntBuffer: {name}");
}
public static unsafe void Initialise()
{
GL.LoadBindings(new SDLBindingsContext());
Context = ImGui.CreateContext();
ImGui.SetCurrentContext(Context);
var io = ImGui.GetIO();
io.DisplaySize.X = Engine.Width;
io.DisplaySize.Y = Engine.Height;
io.KeyMap[(int)ImGuiKey.Tab] = (int)SC.SDL_SCANCODE_TAB;
io.KeyMap[(int)ImGuiKey.LeftArrow] = (int)SC.SDL_SCANCODE_LEFT;
io.KeyMap[(int)ImGuiKey.RightArrow] = (int)SC.SDL_SCANCODE_RIGHT;
io.KeyMap[(int)ImGuiKey.UpArrow] = (int)SC.SDL_SCANCODE_UP;
io.KeyMap[(int)ImGuiKey.DownArrow] = (int)SC.SDL_SCANCODE_DOWN;
io.KeyMap[(int)ImGuiKey.PageUp] = (int)SC.SDL_SCANCODE_PAGEUP;
io.KeyMap[(int)ImGuiKey.PageDown] = (int)SC.SDL_SCANCODE_PAGEDOWN;
io.KeyMap[(int)ImGuiKey.Home] = (int)SC.SDL_SCANCODE_HOME;
io.KeyMap[(int)ImGuiKey.End] = (int)SC.SDL_SCANCODE_END;
io.KeyMap[(int)ImGuiKey.Insert] = (int)SC.SDL_SCANCODE_INSERT;
io.KeyMap[(int)ImGuiKey.Delete] = (int)SC.SDL_SCANCODE_DELETE;
io.KeyMap[(int)ImGuiKey.Backspace] = (int)SC.SDL_SCANCODE_BACKSPACE;
io.KeyMap[(int)ImGuiKey.Space] = (int)SC.SDL_SCANCODE_SPACE;
io.KeyMap[(int)ImGuiKey.Enter] = (int)SC.SDL_SCANCODE_RETURN;
io.KeyMap[(int)ImGuiKey.Escape] = (int)SC.SDL_SCANCODE_ESCAPE;
io.KeyMap[(int)ImGuiKey.KeyPadEnter] = (int)SC.SDL_SCANCODE_KP_ENTER;
io.KeyMap[(int)ImGuiKey.A] = (int)SC.SDL_SCANCODE_A;
io.KeyMap[(int)ImGuiKey.C] = (int)SC.SDL_SCANCODE_C;
io.KeyMap[(int)ImGuiKey.V] = (int)SC.SDL_SCANCODE_V;
io.KeyMap[(int)ImGuiKey.X] = (int)SC.SDL_SCANCODE_X;
io.KeyMap[(int)ImGuiKey.Y] = (int)SC.SDL_SCANCODE_Y;
io.KeyMap[(int)ImGuiKey.Z] = (int)SC.SDL_SCANCODE_Z;
var maj = GL.GetInteger(GetPName.MajorVersion);
var min = GL.GetInteger(GetPName.MinorVersion);
Log.Info($"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();
}
public GLFloatBuffer(string name)
{
Name = name;
GLObject = GL.GenBuffer();
GLHelper.LabelObj(ObjectLabelIdentifier.Buffer, GLObject, $"FloatBuffer: {name}");
}