[Mesa-dev] [PATCH] st/nine: Immediately upload user provided textures

[Axel Davy]

Fixes regression caused by
42d672fa6a766363e5703f119607f7c7975918aa
st/nine: Bind src not dst in nine_context_box_upload

Before that patch, for user provided textures,
when the texture was destroyed, the safety
check for pending uploads, which according to
the code "Following condition cannot happen currently",
was flushing the queue and thus triggering the upload.

After the patch, the texture destruction was delayed after
the upload. However the user frees the texture buffer,
as it thinks the texture released.

Instead of reverting the faulty patch,
this patch instead flushes the csmt queue right away
after queuing the upload for this type of textures.
This is more future-proof, as we may want to bind the
surface for other reasons in the future.

Signed-off-by: Axel Davy <davyaxel0 at gmail.com>
Cc: 18.3 <mesa-stable at lists.freedesktop.org>
---
The regression affects Mesa 18.3.2. At least HL2 lost coast
is affected, has artifacts and crashes at the menu.

 src/gallium/state_trackers/nine/surface9.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/gallium/state_trackers/nine/surface9.c b/src/gallium/state_trackers/nine/surface9.c
index f94f7c62583..7f4ecf559e8 100644
--- a/src/gallium/state_trackers/nine/surface9.c
+++ b/src/gallium/state_trackers/nine/surface9.c
@@ -668,6 +668,19 @@ NineSurface9_CopyMemToDefault( struct NineSurface9 *This,
                             From->data, From->stride,
                             0, /* depth = 1 */
                             &src_box);
+    if (From->texture == D3DRTYPE_TEXTURE) {
+        struct NineTexture9 *tex =
+            NineTexture9(From->base.base.container);
+        /* D3DPOOL_SYSTEMMEM with buffer content passed
+         * from the user: execute the upload right now.
+         * It is possible it is enough to delay upload
+         * until the surface refcount is 0, but the
+         * bind refcount may not be 0, and thus the dtor
+         * is not executed (and doesn't trigger the
+         * pending_uploads_counter check). */
+        if (!tex->managed_buffer)
+            nine_csmt_process(This->base.base.device);
+    }
 
     if (This->data_conversion)
         (void) util_format_translate(This->format_conversion,
-- 
2.20.1