Zebediah Figura : wined3d: Call prepare_upload_bo in wined3d_device_context_emit_map() only for DISCARD or NOOVERWRITE maps.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e906468c64498db006dd98cb726a34ef1f71a24d
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=e906468c64498db006dd98cb726a34ef1f71a24d

Author: Zebediah Figura <zfigura at codeweavers.com>
Date:   Tue Sep 28 16:12:49 2021 -0500

wined3d: Call prepare_upload_bo in wined3d_device_context_emit_map() only for DISCARD or NOOVERWRITE maps.

We can't do an asynchronous upload with just WINED3D_MAP_WRITE, but we can with
update_sub_resource, and prepare_upload_bo doesn't know which it was called
from.

Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/wined3d/cs.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/wined3d/cs.c b/dlls/wined3d/cs.c
index 2d295d4660e..77c27e6cad0 100644
--- a/dlls/wined3d/cs.c
+++ b/dlls/wined3d/cs.c
@@ -2463,7 +2463,8 @@ HRESULT wined3d_device_context_emit_map(struct wined3d_device_context *context,
 
     wined3d_resource_get_sub_resource_map_pitch(resource, sub_resource_idx, &row_pitch, &slice_pitch);
 
-    if ((*map_ptr = context->ops->prepare_upload_bo(context, resource,
+    if ((flags & (WINED3D_MAP_DISCARD | WINED3D_MAP_NOOVERWRITE))
+            && (*map_ptr = context->ops->prepare_upload_bo(context, resource,
             sub_resource_idx, box, row_pitch, slice_pitch, flags, &addr)))
     {
         TRACE("Returning upload bo %s, map pointer %p, row pitch %u, slice pitch %u.\n",