[Mesa-dev] [PATCH 02/13] gallium/u_upload: add u_upload_clone

[Marek Olšák]

From: Marek Olšák <marek.olsak at amd.com>

---
 src/gallium/auxiliary/util/u_upload_mgr.c | 7 +++++++
 src/gallium/auxiliary/util/u_upload_mgr.h | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/src/gallium/auxiliary/util/u_upload_mgr.c b/src/gallium/auxiliary/util/u_upload_mgr.c
index 32697b8..9528495 100644
--- a/src/gallium/auxiliary/util/u_upload_mgr.c
+++ b/src/gallium/auxiliary/util/u_upload_mgr.c
@@ -90,20 +90,27 @@ u_upload_create(struct pipe_context *pipe, unsigned default_size,
 struct u_upload_mgr *
 u_upload_create_default(struct pipe_context *pipe)
 {
    return u_upload_create(pipe, 1024 * 1024,
                           PIPE_BIND_VERTEX_BUFFER |
                           PIPE_BIND_INDEX_BUFFER |
                           PIPE_BIND_CONSTANT_BUFFER,
                           PIPE_USAGE_STREAM);
 }
 
+struct u_upload_mgr *
+u_upload_clone(struct pipe_context *pipe, struct u_upload_mgr *upload)
+{
+   return u_upload_create(pipe, upload->default_size, upload->bind,
+                          upload->usage);
+}
+
 static void upload_unmap_internal(struct u_upload_mgr *upload, boolean destroying)
 {
    if (!destroying && upload->map_persistent)
       return;
 
    if (upload->transfer) {
       struct pipe_box *box = &upload->transfer->box;
 
       if (!upload->map_persistent && (int) upload->offset > box->x) {
          pipe_buffer_flush_mapped_range(upload->pipe, upload->transfer,
diff --git a/src/gallium/auxiliary/util/u_upload_mgr.h b/src/gallium/auxiliary/util/u_upload_mgr.h
index 4538291..536467e 100644
--- a/src/gallium/auxiliary/util/u_upload_mgr.h
+++ b/src/gallium/auxiliary/util/u_upload_mgr.h
@@ -55,20 +55,27 @@ u_upload_create(struct pipe_context *pipe, unsigned default_size,
                 unsigned bind, enum pipe_resource_usage usage);
 
 /**
  * Create the default uploader for pipe_context. Only pipe_context::screen
  * needs to be set for this to succeed.
  */
 struct u_upload_mgr *
 u_upload_create_default(struct pipe_context *pipe);
 
 /**
+ * Create an uploader with identical parameters as another one, but using
+ * the given pipe_context instead.
+ */
+struct u_upload_mgr *
+u_upload_clone(struct pipe_context *pipe, struct u_upload_mgr *upload);
+
+/**
  * Destroy the upload manager.
  */
 void u_upload_destroy( struct u_upload_mgr *upload );
 
 /**
  * Unmap upload buffer
  *
  * \param upload           Upload manager
  *
  * This must usually be called prior to firing the command stream
-- 
2.7.4