/// <inheritdoc />
public override void Compile()
{
if (_id == 0)
{
_window = ScreenWindow;
}
if (_window != null)
{
Size = new Vector2(_window.Width * _windowScale, _window.Height * _windowScale);
}
base.Compile();
_id = GL.GenFramebuffer();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, _id);
var enums = new DrawBuffersEnum[ColorAttachments.Count];
var c = 0;
foreach (var pair in ColorAttachments)
{
pair.Value.Generate(this);
enums[c++] = pair.Value.DrawBuffersEnum;
}
GL.DrawBuffers(enums.Length, enums);
foreach (var pair in ColorAttachments)
{
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, pair.Value.FramebufferAttachment, pair.Value.Target, pair.Value.ID,
0);
}
FramebufferErrorCode err;
err = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (err != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception("Failed loading framebuffer.\nProblem: " + err);
}
foreach (RenderbufferAttachment attachment in RenderbufferAttachments)
{
attachment.Generate(this);
GL.FramebufferRenderbuffer(FramebufferTarget.Framebuffer, attachment.FramebufferAttachment, RenderbufferTarget.Renderbuffer, attachment.ID);
}
err = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (err != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception("Failed loading framebuffer.\nProblem: " + err);
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
GL.BindTexture(TextureTarget.Texture2D, 0);
}
/// <summary>
/// This creates a finished setup for a framebuffer.
/// </summary>
public static Framebuffer CreateWindowFramebuffer(IFramebufferWindow window, int multisamples = 0, PixelInformation?pixelInformation = null, bool depth = true)
{
Framebuffer framebuffer = new Framebuffer(window);
framebuffer.Append("color", new ColorAttachment(0, pixelInformation.GetValueOrDefault(PixelInformation.RGBA_LDR), multisamples: multisamples));
if (depth)
{
RenderbufferAttachment depthAttach = RenderbufferAttachment.GenerateDepth();
depthAttach.Multisample = multisamples;
framebuffer.AppendRenderbuffer(depthAttach);
}
return(framebuffer);
}
/// <summary>
/// Creates a buffer, while always respecting the screen.
/// </summary>
/// <param name="window"></param>
/// <param name="scale"></param>
public Framebuffer(IFramebufferWindow window, float scale = 1) : this(new Vector2(window.Width * scale,
window.Height *scale))
{
_window = window;
_windowScale = scale;
}
