glGetFramebufferParameter man page on Oracle
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GLGETFRAMEBUFFERPARA(3G) OpenGL Manual GLGETFRAMEBUFFERPARA(3G)
NAME
glGetFramebufferParameter - retrieve a named parameter from a
framebuffer
C SPECIFICATION
void glGetFramebufferParameteriv(GLenum target, GLenum pname,
GLint * params);
PARAMETERS
target
The target of the operation, which must be GL_READ_FRAMEBUFFER,
GL_DRAW_FRAMEBUFFER or GL_FRAMEBUFFER.
pname
A token indicating the parameter to be retrieved.
params
The address of a variable to receive the value of the parameter
named pname.
DESCRIPTION
glGetFramebufferParameter retrieves the current value of the parameter
named pname from the framebuffer bound to target. target must be
GL_READ_FRAMEBFUFFER, GL_DRAW_FRAMEBUFFER or GL_FRAMEBUFFER. The token
GL_FRAMEBUFFER is treated as GL_DRAW_FRAMEBUFFER. A non-default
framebuffer must be bound to target.
pname specifies the parameter to be retrieved. The values retrieved
from the framebuffer are written into the variable whose address is
given by params. The following symbols are accepted in pname:
GL_FRAMEBUFFER_DEFAULT_WIDTH
The value of GL_FRAMEBUFFER_DEFAULT_WIDTH for the framebuffer is
written to the single integer variable whose address is given by
params.
GL_FRAMEBUFFER_DEFAULT_HEIGHT
The value of GL_FRAMEBUFFER_DEFAULT_HEIGHT for the framebuffer is
written to the single integer variable whose address is given by
params.
GL_FRAMEBUFFER_DEFAULT_LAYERS
The value of GL_FRAMEBUFFER_DEFAULT_LAYERS for the framebuffer is
written to the single integer variable whose address is given by
params.
GL_FRAMEBUFFER_DEFAULT_SAMPLES
The value of GL_FRAMEBUFFER_DEFAULT_SAMPLES for the framebuffer is
written to the single integer variable whose address is given by
params.
GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS
If the value of GL_FRAMEBUFFER_DEFAULT_FIXED_SAMPLE_LOCATIONS for
the framebuffer is GL_TRUE then the single integer variable whose
address is in params is set to one, otherwise it is set to zero.
ERRORS
GL_INVALID_ENUM is generated if target is not one of the accepted
framebuffer targets.
GL_INVALID_ENUM is generated if pname is not one of the accepted
parameter names.
GL_INVALID_OPERATION is generated if the default framebuffer is bound
to target.
params should be the address of a variable to which the client has
write access otherwise undefined behavior, including process
termination may occur.
ASSOCIATED GETS
glGetFramebufferParameteriv().
SEE ALSO
glFramebufferParameteri().
COPYRIGHT
Copyright © 2012 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 04/29/2014 GLGETFRAMEBUFFERPARA(3G)
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