NAME

       glCheckFramebufferStatus, glCheckNamedFramebufferStatus - check the completeness status of
       a framebuffer

C SPECIFICATION

       GLenum glCheckFramebufferStatus(GLenum target);

       GLenum glCheckNamedFramebufferStatus(GLuint framebuffer, GLenum target);

PARAMETERS

       target
           Specify the target to which the framebuffer is bound for glCheckFramebufferStatus, and
           the target against which framebuffer completeness of framebuffer is checked for
           glCheckNamedFramebufferStatus.

       framebuffer
           Specifies the name of the framebuffer object for glCheckNamedFramebufferStatus

DESCRIPTION

       glCheckFramebufferStatus and glCheckNamedFramebufferStatus return the completeness status
       of a framebuffer object when treated as a read or draw framebuffer, depending on the value
       of target.

       For glCheckFramebufferStatus, the framebuffer checked is that bound to target, which must
       be GL_DRAW_FRAMEBUFFER, GL_READ_FRAMEBUFFER or GL_FRAMEBUFFER.  GL_FRAMEBUFFER is
       equivalent to GL_DRAW_FRAMEBUFFER.

       For glCheckNamedFramebufferStatus, framebuffer is zero or the name of the framebuffer
       object to check. If framebuffer is zero, then the status of the default read or draw
       framebuffer, as determined by target, is returned.

       The return value is GL_FRAMEBUFFER_COMPLETE if the specified framebuffer is complete.
       Otherwise, the return value is determined as follows:

       ·   GL_FRAMEBUFFER_UNDEFINED is returned if the specified framebuffer is the default read
           or draw framebuffer, but the default framebuffer does not exist.

       ·   GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT is returned if any of the framebuffer attachment
           points are framebuffer incomplete.

       ·   GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT is returned if the framebuffer does not
           have at least one image attached to it.

       ·   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.

       ·   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.

       ·   GL_FRAMEBUFFER_UNSUPPORTED is returned if the combination of internal formats of the
           attached images violates an implementation-dependent set of restrictions.

       ·   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.

       ·   GL_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.

       ·   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.

       Additionally, if an error occurs, zero is returned.

ERRORS

       GL_INVALID_ENUM is generated if target is not GL_DRAW_FRAMEBUFFER, GL_READ_FRAMEBUFFER or
       GL_FRAMEBUFFER.

       GL_INVALID_OPERATION is generated by glCheckNamedFramebufferStatus if framebuffer is not
       zero or the name of an existing framebuffer object.

VERSION SUPPORT

       ┌──────────────────────────────┬───────────────────────────────────────────────────────────────────────┐
       │                              │                OpenGL Version                                         │
       ├──────────────────────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │Function                      │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │/                             │     │     │     │     │     │     │     │     │     │     │     │     │
       │Feature                       │     │     │     │     │     │     │     │     │     │     │     │     │
       │Name                          │     │     │     │     │     │     │     │     │     │     │     │     │
       ├──────────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glCheckFramebufferStatus      │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────────────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │glCheckNamedFramebufferStatus │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  -  │  ✔  │
       └──────────────────────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘

SEE ALSO

       glGenFramebuffers(), glDeleteFramebuffers()glBindFramebuffer()

COPYRIGHT

       Copyright © 2010-2014 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.
       http://opencontent.org/openpub/.

COPYRIGHT

       Copyright © 2010-2014 Khronos Group

[FIXME: source]                             07/22/2015                   GLCHECKFRAMEBUFFERST(3G)