+ return u_upload_create(pipe, 1024 * 1024,
+ PIPE_BIND_VERTEX_BUFFER |
+ PIPE_BIND_INDEX_BUFFER |
+ PIPE_BIND_CONSTANT_BUFFER,
+ PIPE_USAGE_STREAM, 0);
+}
+
+struct u_upload_mgr *
+u_upload_clone(struct pipe_context *pipe, struct u_upload_mgr *upload)
+{
+ struct u_upload_mgr *result = u_upload_create(pipe, upload->default_size,
+ upload->bind, upload->usage,
+ upload->flags);
+ if (!upload->map_persistent && result->map_persistent)
+ u_upload_disable_persistent(result);
+ else if (upload->map_persistent &&
+ upload->map_flags & PIPE_TRANSFER_FLUSH_EXPLICIT)
+ u_upload_enable_flush_explicit(result);
+
+ return result;
+}
+
+void
+u_upload_enable_flush_explicit(struct u_upload_mgr *upload)
+{
+ assert(upload->map_persistent);
+ upload->map_flags &= ~PIPE_TRANSFER_COHERENT;
+ upload->map_flags |= PIPE_TRANSFER_FLUSH_EXPLICIT;
+}
+
+void
+u_upload_disable_persistent(struct u_upload_mgr *upload)
+{
+ upload->map_persistent = FALSE;
+ upload->map_flags &= ~(PIPE_TRANSFER_COHERENT | PIPE_TRANSFER_PERSISTENT);
+ upload->map_flags |= PIPE_TRANSFER_FLUSH_EXPLICIT;
+}
+
+static void
+upload_unmap_internal(struct u_upload_mgr *upload, boolean destroying)
+{
+ if (!upload->transfer)
+ return;
+
+ if (upload->map_flags & PIPE_TRANSFER_FLUSH_EXPLICIT) {
+ struct pipe_box *box = &upload->transfer->box;
+ unsigned flush_offset = box->x + upload->flushed_size;
+
+ if (upload->offset > flush_offset) {