glCheckFramebufferStatus man page on RedHat
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GLCHECKFRAMEBUFFERST(3G) OpenGL Manual GLCHECKFRAMEBUFFERST(3G)
NAME
glCheckFramebufferStatus - check the completeness status of a
framebuffer
C SPECIFICATION
GLenum glCheckFramebufferStatus(GLenum target);
PARAMETERS
target
Specify the target of the framebuffer completeness check.
DESCRIPTION
glCheckFramebufferStatus queries the completeness status of the
framebuffer object currently bound to target. target must be
GL_DRAW_FRAMEBUFFER, GL_READ_FRAMEBUFFER or GL_FRAMEBUFFER.
GL_FRAMEBUFFER is equivalent to GL_DRAW_FRAMEBUFFER.
The return value is GL_FRAMEBUFFER_COMPLETE if the framebuffer bound to
target is complete. Otherwise, the return value is determined as
follows:
· GL_FRAMEBUFFER_UNDEFINED is returned if target is the default
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_DRAWBUFFERi.
· 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.
SEE ALSO
glGenFramebuffers(), glDeleteFramebuffers() glBindFramebuffer()
COPYRIGHT
Copyright © 2010 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/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLCHECKFRAMEBUFFERST(3G)
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