From 92c00d1dc395f605d99f27a1bca757a315cbc73e Mon Sep 17 00:00:00 2001
From: Aleix Pol <aleixpol@kde.org>
Date: Tue, 26 Jan 2021 02:56:21 +0100
Subject: [PATCH] screencasting: generate the composed textures with the proper
 size

Don't neglect the scale of the buffer for windows that we are rendering
on the spot.
Otherwise we will be offering a smaller size to what we are generally
using. More importantly, the ScreencastManager expects the buffers
scaled. This causes glitches when the stream starts otherwise as the
first frame triggers a resize.

CCBUG: 428594
---
 plugins/scenes/opengl/scene_opengl.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/plugins/scenes/opengl/scene_opengl.cpp b/plugins/scenes/opengl/scene_opengl.cpp
index 115422bea0..3e6eb0fba7 100644
--- a/plugins/scenes/opengl/scene_opengl.cpp
+++ b/plugins/scenes/opengl/scene_opengl.cpp
@@ -1521,8 +1521,8 @@ QSharedPointer<GLTexture> OpenGLWindow::windowTexture()
         return QSharedPointer<GLTexture>(new GLTexture(*frame->texture()));
     } else {
         auto effectWindow = window()->effectWindow();
-        const QRect geo = window()->clientGeometry();
-        QSharedPointer<GLTexture> texture(new GLTexture(GL_RGBA8, geo.size()));
+        const QRect geo = window()->bufferGeometry();
+        QSharedPointer<GLTexture> texture(new GLTexture(GL_RGBA8, geo.size() * window()->bufferScale()));
 
         QScopedPointer<GLRenderTarget> framebuffer(new KWin::GLRenderTarget(*texture));
         GLRenderTarget::pushRenderTarget(framebuffer.data());