GLGETBUFFERPARAMETER(3G) OpenGL 3.3 GLGETBUFFERPARAMETER(3G)NAME
glGetBufferParameteriv - return parameters of a buffer object
C SPECIFICATION
void glGetBufferParameteriv(GLenum target, GLenum value, GLint * data);
PARAMETERS
target
Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER, GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, or
GL_PIXEL_UNPACK_BUFFER.
value
Specifies the symbolic name of a buffer object parameter. Accepted values are GL_BUFFER_ACCESS, GL_BUFFER_MAPPED, GL_BUFFER_SIZE, or
GL_BUFFER_USAGE.
data
Returns the requested parameter.
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.
ERRORS
GL_INVALID_ENUM is generated if target or value is not an accepted value.
GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target.
SEE ALSO
glBindBuffer(), glBufferData(), glMapBuffer(), glUnmapBuffer()
COPYRIGHT
Copyright (C) 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/.
OpenGL 3.3 03/08/2011 GLGETBUFFERPARAMETER(3G)
Check Out this Related Man Page
GLGETBUFFERPOINTERV(3G) OpenGL 3.3 GLGETBUFFERPOINTERV(3G)NAME
glGetBufferPointerv - return the pointer to a mapped buffer object's data store
C SPECIFICATION
void glGetBufferPointerv(GLenum target, GLenum pname, GLvoid ** params);
PARAMETERS
target
Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER, GL_COPY_READ_BUFFER, GL_COPY_WRITE_BUFFER,
GL_ELEMENT_ARRAY_BUFFER, GL_PIXEL_PACK_BUFFER, GL_PIXEL_UNPACK_BUFFER, GL_TEXTURE_BUFFER, GL_TRANSFORM_FEEDBACK_BUFFER, or
GL_UNIFORM_BUFFER.
pname
Specifies the pointer to be returned. The symbolic constant must be GL_BUFFER_MAP_POINTER.
params
Returns the pointer value specified by pname.
DESCRIPTION
glGetBufferPointerv returns pointer information. pname is a symbolic constant indicating the pointer to be returned, which must be
GL_BUFFER_MAP_POINTER, the pointer to which the buffer object's data store is mapped. If the data store is not currently mapped, NULL is
returned. params is a pointer to a location in which to place the returned pointer value.
NOTES
If an error is generated, no change is made to the contents of params.
The initial value for the pointer is NULL.
ERRORS
GL_INVALID_ENUM is generated if target or pname is not an accepted value.
GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to target.
SEE ALSO
glBindBuffer(), glMapBuffer()
COPYRIGHT
Copyright (C) 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/.
OpenGL 3.3 03/08/2011 GLGETBUFFERPOINTERV(3G)
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