From 31c1cf0150cfb617c09dcff4548952ded78cf836 Mon Sep 17 00:00:00 2001
From: Seungha Yang <seungha@centricular.com>
Date: Mon, 10 Jul 2023 22:56:30 +0900
Subject: [PATCH] qt6d3d11: Set sampler filtering method

QQuickItem::smooth property doesn't seem to be propagated to
newly created QSGSimpleTextureNode automatically.

Fixes: https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2793
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5004>
---
 .../gst-plugins-bad/ext/qt6d3d11/gstqt6d3d11videoitem.cpp   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/subprojects/gst-plugins-bad/ext/qt6d3d11/gstqt6d3d11videoitem.cpp b/subprojects/gst-plugins-bad/ext/qt6d3d11/gstqt6d3d11videoitem.cpp
index 3229e91cf0..083f9a21f6 100644
--- a/subprojects/gst-plugins-bad/ext/qt6d3d11/gstqt6d3d11videoitem.cpp
+++ b/subprojects/gst-plugins-bad/ext/qt6d3d11/gstqt6d3d11videoitem.cpp
@@ -225,8 +225,12 @@ GstQt6D3D11VideoItem::updatePaintNode (QSGNode * old_node,
 
   GST_TRACE ("%p updatePaintNode", this);
 
-  if (!new_node)
+  if (!new_node) {
+    bool is_smooth = this->smooth ();
     new_node = new GstQSG6D3D11Node (this, qt_device_);
+    new_node->setFiltering (is_smooth ? QSGTexture::Filtering::Linear :
+        QSGTexture::Filtering::Nearest);
+  }
 
   if (force_aspect_ratio_ && caps_) {
     src.w = display_width_;