glGetBufferPointerv — return the pointer to a mapped buffer object's data store
Specifies the target buffer object. The symbolic constant must be
Specifies the pointer to be returned. The symbolic constant must be
Returns the pointer value specified by
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.
If an error is generated, no change is made to the contents of
glGetBufferPointerv is available only if the GL version is 1.5 or greater.
GL_PIXEL_UNPACK_BUFFER are available only if the GL version is 2.1 or greater.
The initial value for the pointer is
GL_INVALID_ENUM is generated if
pname is not an accepted value.
GL_INVALID_OPERATION is generated if the reserved buffer object name 0 is bound to
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