framebuffer

• framebuffer:Begin()
• framebuffer:Bind()
• framebuffer:Clear(r, g, b, a)
• framebuffer:End()
• framebuffer:GetTexture(type)
• framebuffer:GetTrace()
• framebuffer:IsValid()
• framebuffer:New(tbl, skip_gc_callback)
• framebuffer:Remove()
• framebuffer:__tostring()