glFramebufferRenderbuffer

glFramebufferRenderbuffer: man3/glFramebufferRenderbuffer.xml

glFramebufferRenderbuffer attaches a renderbuffer as one of the logical buffers of the currently bound framebuffer object. renderbuffer is the name of the renderbuffer object to attach and must be either zero, or the name of an existing renderbuffer object of type renderbuffertarget. If renderbuffer is not zero and if glFramebufferRenderbuffer is successful, then the renderbuffer name renderbuffer will be used as the logical buffer identified by attachment of the framebuffer currently bound to target. The value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE for the specified attachment point is set to GL_RENDERBUFFER and the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME is set to renderbuffer. All other state values of the attachment point specified by attachment are set to their default values. No change is made to the state of the renderbuuffer object and any previous attachment to the attachment logical buffer of the framebuffer target is broken. Calling glFramebufferRenderbuffer with the renderbuffer name zero will detach the image, if any, identified by attachment, in the framebuffer currently bound to target. All state values of the attachment point specified by attachment in the object bound to target are set to their default values. Setting attachment to the value GL_DEPTH_STENCIL_ATTACHMENT is a special case causing both the depth and stencil attachments of the framebuffer object to be set to renderbuffer, which should have the base internal format GL_DEPTH_STENCIL.