From 61bb907bb4bb8953c422f5311f9cd4d2f4e3967c Mon Sep 17 00:00:00 2001
From: David Edmundson <kde@davidedmundson.co.uk>
Date: Wed, 23 Nov 2016 16:19:13 +0000
Subject: [PATCH] Scale openGL sub surfaces

Test Plan: Opened a module in system settings that uses QtQuick, confirmed it's the right size

Reviewers: #plasma

Subscribers: plasma-devel, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D3503
---
 scene_opengl.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scene_opengl.cpp b/scene_opengl.cpp
index 3003e62dd8..8ebebae451 100644
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -1452,12 +1452,17 @@ static void renderSubSurface(GLShader *shader, const QMatrix4x4 &mvp, const QMat
     QMatrix4x4 newWindowMatrix = windowMatrix;
     newWindowMatrix.translate(pixmap->subSurface()->position().x(), pixmap->subSurface()->position().y());
 
+    qreal scale = 1.0;
+    if (pixmap->surface()) {
+        scale = pixmap->surface()->scale();
+    }
+
     if (!pixmap->texture()->isNull()) {
         // render this texture
         shader->setUniform(GLShader::ModelViewProjectionMatrix, mvp * newWindowMatrix);
         auto texture = pixmap->texture();
         texture->bind();
-        texture->render(QRegion(), QRect(0, 0, texture->width(), texture->height()));
+        texture->render(QRegion(), QRect(0, 0, texture->width() / scale, texture->height() / scale));
         texture->unbind();
     }