From 769a6403d482e8970c26303c80178cd00207163f Mon Sep 17 00:00:00 2001
From: Alessandro Astone <ales.astone@gmail.com>
Date: Feb 15 2024 13:31:01 +0000
Subject: Backport patch to fix window screencasts being vertically mirrored


---

diff --git a/kwin-fix-window-screencasts-being-vertically-mirrored-with-memfd.patch b/kwin-fix-window-screencasts-being-vertically-mirrored-with-memfd.patch
new file mode 100644
index 0000000..7e9619b
--- /dev/null
+++ b/kwin-fix-window-screencasts-being-vertically-mirrored-with-memfd.patch
@@ -0,0 +1,87 @@
+From a8123ff65ec552034611f3ceb38e1bcbe94d7452 Mon Sep 17 00:00:00 2001
+From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
+Date: Thu, 15 Feb 2024 10:54:20 +0200
+Subject: [PATCH 1/2] plugins/screencast: Fix window screencasts being
+ vertically mirrored with memfd
+
+WindowScreenCastSource::render(GLFramebuffer) renders windows with the y
+axis flipped, but the offscreen has no FlipY flag set.
+
+BUG: 478223
+---
+ src/plugins/screencast/windowscreencastsource.cpp | 13 +++++--------
+ 1 file changed, 5 insertions(+), 8 deletions(-)
+
+diff --git a/src/plugins/screencast/windowscreencastsource.cpp b/src/plugins/screencast/windowscreencastsource.cpp
+index a9dc8a4af75..f3acbeb9ba9 100644
+--- a/src/plugins/screencast/windowscreencastsource.cpp
++++ b/src/plugins/screencast/windowscreencastsource.cpp
+@@ -52,24 +52,21 @@ void WindowScreenCastSource::render(spa_data *spa, spa_video_format format)
+     if (!offscreenTexture) {
+         return;
+     }
+-    GLFramebuffer offscreenTarget(offscreenTexture.get());
++    offscreenTexture->setContentTransform(OutputTransform::FlipY);
+ 
++    GLFramebuffer offscreenTarget(offscreenTexture.get());
+     render(&offscreenTarget);
+     grabTexture(offscreenTexture.get(), spa, format);
+ }
+ 
+ void WindowScreenCastSource::render(GLFramebuffer *target)
+ {
+-    const QRectF geometry = m_window->clientGeometry();
+-    QMatrix4x4 projectionMatrix;
+-    projectionMatrix.scale(1, -1);
+-    projectionMatrix.ortho(geometry);
++    RenderTarget renderTarget(target);
++    RenderViewport viewport(m_window->clientGeometry(), 1, renderTarget);
+ 
+     WindowPaintData data;
+-    data.setProjectionMatrix(projectionMatrix);
++    data.setProjectionMatrix(viewport.projectionMatrix());
+ 
+-    RenderTarget renderTarget(target);
+-    RenderViewport viewport(geometry, 1, renderTarget);
+     GLFramebuffer::pushFramebuffer(target);
+     glClearColor(0.0, 0.0, 0.0, 0.0);
+     glClear(GL_COLOR_BUFFER_BIT);
+-- 
+GitLab
+
+
+From 9a006a820e3e9e0a9726f98cea1491973d91d4fc Mon Sep 17 00:00:00 2001
+From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
+Date: Thu, 15 Feb 2024 10:55:23 +0200
+Subject: [PATCH 2/2] plugins/screencast: Make region screen cast nicer to
+ memfd
+
+Set the FlipY flag so when the memfd code grabs the texture contents, it
+doesn't need to flip the texture on the cpu side.
+---
+ src/plugins/screencast/regionscreencastsource.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/plugins/screencast/regionscreencastsource.cpp b/src/plugins/screencast/regionscreencastsource.cpp
+index 567c5a652bf..c81295942d3 100644
+--- a/src/plugins/screencast/regionscreencastsource.cpp
++++ b/src/plugins/screencast/regionscreencastsource.cpp
+@@ -59,6 +59,7 @@ void RegionScreenCastSource::updateOutput(Output *output)
+ 
+         ShaderBinder shaderBinder(ShaderTrait::MapTexture | ShaderTrait::TransformColorspace);
+         QMatrix4x4 projectionMatrix;
++        projectionMatrix.scale(1, -1);
+         projectionMatrix.ortho(m_region);
+         projectionMatrix.translate(outputGeometry.left(), outputGeometry.top());
+ 
+@@ -82,6 +83,7 @@ void RegionScreenCastSource::ensureTexture()
+         if (!m_renderedTexture) {
+             return;
+         }
++        m_renderedTexture->setContentTransform(OutputTransform::FlipY);
+         m_renderedTexture->setFilter(GL_LINEAR);
+         m_renderedTexture->setWrapMode(GL_CLAMP_TO_EDGE);
+ 
+-- 
+GitLab
+
diff --git a/kwin.spec b/kwin.spec
index 5ced062..9820eb0 100644
--- a/kwin.spec
+++ b/kwin.spec
@@ -3,7 +3,7 @@
 
 Name:    kwin
 Version: 5.93.0
-Release: 2%{?dist}
+Release: 3%{?dist}
 Summary: KDE Window manager
 
 License: BSD-2-Clause AND BSD-3-Clause AND CC0-1.0 AND GPL-2.0-only AND GPL-2.0-or-later AND GPL-3.0-only AND GPL-3.0-or-later AND LGPL-2.0-only AND LGPL-2.0-or-later AND LGPL-2.1-only AND LGPL-2.1-or-later AND LGPL-3.0-only AND (GPL-2.0-only OR GPL-3.0-only) AND (LGPL-2.1-only OR LGPL-3.0-only) AND MIT
@@ -16,6 +16,8 @@ Source0: http://download.kde.org/%{stable_kf6}/plasma/%{version}/%{name}-%{versi
 # 5.93.0: Fix for kwin that causes some strange color glitches on RC2 (Will be fixed on final)
 # https://invent.kde.org/plasma/kwin/-/commit/fe2ead76443a8fb347b2a507ba3086606bd38237
 Patch0:  kwin-drm-use-correct-uniform-type.patch
+# https://invent.kde.org/plasma/kwin/-/merge_requests/5204
+Patch1:  kwin-fix-window-screencasts-being-vertically-mirrored-with-memfd.patch
 
 ## proposed patches
 
@@ -289,6 +291,9 @@ rm -v %{buildroot}%{_kf6_bindir}/kwin_x11 %{buildroot}%{_userunitdir}/plasma-kwi
 
 
 %changelog
+* Thu Feb 15 2024 Alessandro Astone <ales.astone@gmail.com> - 5.93.0-3
+- Backport patch to fix window screencasts being vertically mirrored
+
 * Sat Feb 03 2024 Steve Cossette <farchord@gmail.com> - 5.93.0-2
 - Added patch that fixes kwin glitch with HDR and some other issues