Backport texture sharing for NVIDIA

This commit backports the Vulkan server buffer and texture sharing code
from Qt 5.14 to Qt 5.12 as an opt-in feature. To enable, configure with
"-feature-wayland-client-texture-sharing-experimental
-feature-wayland-compositor-texture-sharing-experimental"

Contains code from the following commits:

Add server buffer integration based on Vulkan
(commit df3a1761af2f20d59ae09a7adaa2f5b959047687)

Compressed texture support for vulkan server buffers
(commit f710489a341713c675cfd91d22ccd7bf8f29f4dd)

Implement server-side toOpenGlTexture for Vulkan
(commit 19361e7259f04b08925b1e8e99faf9460770ee7b)

New texture sharing protocol and infrastructure
(commit 80001cbf0451f4ba2a971fb20b80dc8e25ac604d)

Change-Id: I6c36ef7fddcd4db39e80d03a822d89f15eae3434
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Johan Helsing <johan.helsing@qt.io>

1 files changed, 2 insertions, 1 deletions

diff --git a/src/client/hardwareintegration/qwaylandserverbufferintegration_p.h b/src/client/hardwareintegration/qwaylandserverbufferintegration_p.h
index 7439087d8..719dad9ed 100644
--- a/src/client/hardwareintegration/qwaylandserverbufferintegration_p.h
+++ b/src/client/hardwareintegration/qwaylandserverbufferintegration_p.h
@@ -70,7 +70,8 @@ class Q_WAYLAND_CLIENT_EXPORT QWaylandServerBuffer
 public:
     enum Format {
         RGBA32,
-        A8
+        A8,
+        Custom
     };
 
     QWaylandServerBuffer();