(
GLenum ( target ) , GLintptr ( offset ) , GLsizeiptr ( size ) , const GLvoid * ( data ))-> void
glBufferSubData(
target , offset , size , data)
Copy subset of data into the currently bound vertex-buffer-data object
target -- the symbolic constant indicating which buffer type is intended
offset -- offset from beginning of buffer at which to copy bytes
size -- the count-in-bytes of the array (if an int/long), if None,
calculate size from data, if an array and data is None, use as
data (i.e. the parameter can be omitted and calculated)
data -- data-pointer to be used, may be None to initialize without
copying over a data-set
Note that if size is not an int/long it is considered to be data
*iff* data is None
Parameters Variables Description target
Specifies the target buffer object. The symbolic constant must be GL_ARRAY_BUFFER , GL_ATOMIC_COUNTER_BUFFER , GL_COPY_READ_BUFFER , GL_COPY_WRITE_BUFFER , GL_DRAW_INDIRECT_BUFFER , GL_DISPATCH_INDIRECT_BUFFER , GL_ELEMENT_ARRAY_BUFFER , GL_PIXEL_PACK_BUFFER , GL_PIXEL_UNPACK_BUFFER , GL_QUERY_BUFFER , GL_SHADER_STORAGE_BUFFER , GL_TEXTURE_BUFFER , GL_TRANSFORM_FEEDBACK_BUFFER , or GL_UNIFORM_BUFFER .
offsetSpecifies the offset into the buffer object's data store where data replacement will begin, measured in bytes.
sizeSpecifies the size in bytes of the data store region being replaced.
dataSpecifies a pointer to the new data that will be copied into the data store.
Sample Code ReferencesThe following code samples have been found which appear to reference the functions described here. Take care that the code may be old, broken or not even use PyOpenGL.
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