static (IHostScreen Screen, FBO Fbo, TextureObject DepthTex, Vector2i Size) Create(int width, int height)
{
var screen = Engine.GetValidCurrentContext();
var size = new Vector2i(width, height);
var depth = TextureObject.Empty;
var fbo = FBO.Empty;
try {
depth = TextureObject.Create();
TextureObject.Bind2D(depth);
TextureObject.DepthImage2DUninitialized(size);
TextureObject.Parameter2DMinFilter(TextureShrinkMode.NearestNeighbor, TextureMipmapMode.None);
TextureObject.Parameter2DMagFilter(TextureExpansionMode.NearestNeighbor);
TextureObject.Parameter2DWrapS(TextureWrapMode.ClampToBorder);
TextureObject.Parameter2DWrapT(TextureWrapMode.ClampToBorder);
fbo = FBO.Create();
FBO.Bind(fbo, FBO.Target.FrameBuffer);
FBO.SetTexture2DBuffer(depth, FBO.Attachment.DepthAttachment);
GL.DrawBuffer(DrawBufferMode.None);
GL.ReadBuffer(ReadBufferMode.None);
FBO.ThrowIfInvalidStatus();
FBO.Unbind(FBO.Target.FrameBuffer);
return(Screen : screen, Fbo : fbo, DepthTex : depth, Size : size);
}
catch {
TextureObject.Delete(ref depth);
FBO.Delete(ref fbo);
throw;
}
}
