Signature
Parameters
Description
glGetBufferParameteriv
returns in
data
a selected parameter of the buffer object
specified by
target
.
value
names a specific buffer object parameter, as follows:
- GL_BUFFER_ACCESS
-
params returns the access policy set while mapping the buffer object. The initial value is GL_READ_WRITE .
- GL_BUFFER_MAPPED
-
params returns a flag indicating whether the buffer object is currently mapped. The initial value is GL_FALSE .
- GL_BUFFER_SIZE
-
params returns the size of the buffer object, measured in bytes. The initial value is 0.
- GL_BUFFER_USAGE
-
params returns the buffer object's usage pattern. The initial value is GL_STATIC_DRAW .
Notes
If an error is generated,
no change is made to the contents of
data
.
glGetBufferParameteriv
is available only if the GL version is 1.5 or greater.
Targets
GL_PIXEL_PACK_BUFFER
and
GL_PIXEL_UNPACK_BUFFER
are available
only if the GL version is 2.1 or greater.
Errors
GL_INVALID_OPERATION
is generated if the reserved buffer object name 0 is bound to
target
.
GL_INVALID_OPERATION
is generated if
glGetBufferParameteriv
is executed between the execution of
glBegin
and the corresponding execution of
glEnd
.
See Also
Copyright
Copyright
2005 Addison-Wesley.
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/
.