From c1635c11797f77c012e2a2006ed6e07a05bf6f63 Mon Sep 17 00:00:00 2001
From: Xaver Hugl <xaver.hugl@gmail.com>
Date: Sat, 20 Mar 2021 01:05:26 +0100
Subject: [PATCH] Explicitly preserve buffer contents in EglDmabuf

---
 src/platformsupport/scenes/opengl/egl_dmabuf.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/platformsupport/scenes/opengl/egl_dmabuf.cpp b/src/platformsupport/scenes/opengl/egl_dmabuf.cpp
index 09e948f096..d235e73926 100644
--- a/src/platformsupport/scenes/opengl/egl_dmabuf.cpp
+++ b/src/platformsupport/scenes/opengl/egl_dmabuf.cpp
@@ -232,6 +232,8 @@ EGLImage EglDmabuf::createImage(const QVector<Plane> &planes,
         }
     }
 
+    attribs << EGL_IMAGE_PRESERVED_KHR << EGL_TRUE;
+
     attribs << EGL_NONE;
 
     EGLImage image = eglCreateImageKHR(m_backend->eglDisplay(),