glGetFramebufferAttachmentParameteriv — return attachment parameters of a framebuffer object
void glGetFramebufferAttachmentParameteriv( | GLenum target, |
| GLenum attachment, | |
| GLenum pname, | |
GLint * params); |
target Specifies the target framebuffer object. The symbolic constant must be GL_FRAMEBUFFER.
attachment Specifies the symbolic name of a framebuffer object attachment point. Accepted values are GL_COLOR_ATTACHMENT0, GL_DEPTH_ATTACHMENT, and GL_STENCIL_ATTACHMENT.
pname Specifies the symbolic name of a framebuffer object attachment parameter. Accepted values are GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, and GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE.
paramsReturns the requested parameter.
glGetFramebufferAttachmentParameteriv returns in params a selected attachment parameter of the attachpoint point attachment of the currently bound framebuffer object.
pname names a specific framebuffer object attachment parameter, as follows:
GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE params returns the type of object which contains the attached image, either GL_RENDERBUFFER, GL_TEXTURE, or if no image is attached, GL_NONE. The initial value is GL_NONE.
GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME If the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_RENDERBUFFER, params returns the name of the renderbuffer object which contains the attached image. If the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_TEXTURE, params returns the name of the texture object which contains the attached image. The initial value is zero.
GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL If the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_TEXTURE, params returns the mipmap level of the texture object which contains the attached image. The initial value is zero.
GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE If the value of GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is GL_TEXTURE and GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME is the name of a cube-map texture, params returns the cube map face of the cube-map texture object which contains the attached image. If the attached image is from a texture object but not a cube-map, params returns 0. The initial value is GL_TEXTURE_CUBE_MAP_POSITIVE_X.
GL_INVALID_ENUM is generated if target is not GL_FRAMEBUFFER.
GL_INVALID_ENUM is generated if attachment is not GL_COLOR_ATTACHMENT0, GL_DEPTH_ATTACHMENT, or GL_STENCIL_ATTACHMENT.
GL_INVALID_ENUM is generated if the attached object at the named attachment point is GL_RENDERBUFFER and pname is not GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE or GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME.
GL_INVALID_ENUM is generated if the attached object at the named attachment point is GL_TEXTURE and pname is not GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE, GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME, GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL, or GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE.
GL_INVALID_ENUM is generated if there is no attached object at the named attachment point and pname is not GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE.
GL_INVALID_OPERATION is generated if the default framebuffer object name 0 is bound.
Copyright © 2008 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.