private void CreateFramebuffer()
{
this.glControl.MakeCurrent();
if (this.framebufferId > 0)
{
GL.DeleteFramebuffer(this.framebufferId);
}
if (this.depthbufferId > 0)
{
GL.DeleteRenderbuffer(this.depthbufferId);
}
if (this.colorbufferId > 0)
{
GL.DeleteRenderbuffer(this.colorbufferId);
}
this.framebufferId = GL.GenFramebuffer();
GL.BindFramebuffer(FramebufferTarget.Framebuffer, this.framebufferId);
this.colorbufferId = GL.GenRenderbuffer();
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, this.colorbufferId);
GL.RenderbufferStorage(
RenderbufferTarget.Renderbuffer,
RenderbufferStorage.Rgba8,
this.size.Width,
this.size.Height);
GL.FramebufferRenderbuffer(
FramebufferTarget.Framebuffer,
FramebufferAttachment.ColorAttachment0,
RenderbufferTarget.Renderbuffer,
this.colorbufferId);
this.depthbufferId = GL.GenRenderbuffer();
GL.BindRenderbuffer(RenderbufferTarget.Renderbuffer, this.depthbufferId);
GL.RenderbufferStorage(
RenderbufferTarget.Renderbuffer,
RenderbufferStorage.DepthComponent24,
this.size.Width,
this.size.Height);
GL.FramebufferRenderbuffer(
FramebufferTarget.Framebuffer,
FramebufferAttachment.DepthAttachment,
RenderbufferTarget.Renderbuffer,
this.depthbufferId);
FramebufferErrorCode error = GL.CheckFramebufferStatus(FramebufferTarget.Framebuffer);
if (error != FramebufferErrorCode.FramebufferComplete)
{
throw new Exception();
}
this.loaded = true;
}
internal void Prepare(Size framebuffersize)
{
if (GraphicsContext.CurrentContext != this.glControl.Context)
{
this.glControl.MakeCurrent();
}
if (framebuffersize != this.size || this.loaded == false)
{
this.size = framebuffersize;
this.CreateFramebuffer();
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, this.framebufferId);
}