void * (*MapBuffer)( GLcontext *ctx, GLenum target, GLenum access,
struct gl_buffer_object *obj );
+ void (*CopyBufferSubData)( GLcontext *ctx,
+ struct gl_buffer_object *src,
+ struct gl_buffer_object *dst,
+ GLintptr readOffset, GLintptr writeOffset,
+ GLsizeiptr size );
+
/* May return NULL if MESA_MAP_NOWAIT_BIT is set in access:
*/
void * (*MapBufferRange)( GLcontext *ctx, GLenum target,