public bool CheckCompleteness()
{
uint result = glCheckFramebufferStatus(OpenGL.GL_FRAMEBUFFER);
if (result != OpenGL.GL_FRAMEBUFFER_COMPLETE)
{
string message = string.Empty;
switch (result)
{
case OpenGL.GL_FRAMEBUFFER_UNDEFINED:
message = "GL_FRAMEBUFFER_UNDEFINED is returned if target is the default framebuffer, but the default framebuffer does not exist.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
message = "GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT is returned if any of the framebuffer attachment points are framebuffer incomplete.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
message = "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT is returned if the framebuffer does not have at least one image attached to it.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER:
message = "GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER is returned if the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_NONE for any color attachment point(s) named by GL_DRAW_BUFFERi.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER:
message = "GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER is returned if GL_READ_BUFFER is not GL_NONE and the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_NONE for the color attachment point named by GL_READ_BUFFER.";
break;
case OpenGL.GL_FRAMEBUFFER_UNSUPPORTED:
message = "GL_FRAMEBUFFER_UNSUPPORTED is returned if the combination of internal formats of the attached images violates an implementation-dependent set of restrictions.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE:
message = "GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE is returned if the value of GL_RENDERBUFFER_SAMPLES is not the same for all attached renderbuffers; if the value of GL_TEXTURE_SAMPLES is the not same for all attached textures; or, if the attached images are a mix of renderbuffers and textures, the value of GL_RENDERBUFFER_SAMPLES does not match the value of GL_TEXTURE_SAMPLES.\r\nGL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE is also returned if the value of GL_TEXTURE_FIXED_SAMPLE_LOCATIONS is not the same for all attached textures; or, if the attached images are a mix of renderbuffers and textures, the value of GL_TEXTURE_FIXED_SAMPLE_LOCATIONS is not GL_TRUE for all attached textures.";
break;
case OpenGL.GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS:
message = "GL_FRAMEBUFFER_INCOMPLETE_LAYER_TARGETS is returned if any framebuffer attachment is layered, and any populated attachment is not layered, or if all populated color attachments are not from textures of the same target.";
break;
default:
break;
}
throw new Exception(message);
}
return true;
}
private Framebuffer CreateFramebuffer(int width, int height)
{
var texture = new Texture(TextureTarget.Texture2D,
new NullImageFiller(width, height, GL.GL_RGBA, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE),
new SamplerParameters(
TextureWrapping.Repeat,
TextureWrapping.Repeat,
TextureWrapping.Repeat,
TextureFilter.Linear,
TextureFilter.Linear));
texture.Initialize();
this.BindingTexture = texture;
Renderbuffer colorBuffer = Renderbuffer.CreateColorbuffer(width, height, GL.GL_RGBA);
Renderbuffer depthBuffer = Renderbuffer.CreateDepthbuffer(width, height, DepthComponentType.DepthComponent24);
var framebuffer = new Framebuffer();
framebuffer.Bind();
framebuffer.Attach(colorBuffer); //0
framebuffer.Attach(texture); //1
framebuffer.Attach(depthBuffer); // special
framebuffer.SetDrawBuffers(GL.GL_COLOR_ATTACHMENT0 + 1); // as in 1 in framebuffer.Attach(texture);//1
framebuffer.CheckCompleteness();
framebuffer.Unbind();
return(framebuffer);
}
