diff --git a/effects/invert/data/1.10/invert.frag b/effects/invert/data/1.10/invert.frag
index 9fe602b654..49d7861e15 100644
--- a/effects/invert/data/1.10/invert.frag
+++ b/effects/invert/data/1.10/invert.frag
@@ -2,11 +2,11 @@ uniform sampler2D sampler;
 uniform vec4 modulation;
 uniform float saturation;
 
-varying vec2 varyingTexCoords;
+varying vec2 texcoord0;
 
 void main()
 {
-    vec4 tex = texture2D(sampler, varyingTexCoords);
+    vec4 tex = texture2D(sampler, texcoord0);
 
     if (saturation != 1.0) {
         vec3 desaturated = tex.rgb * vec3( 0.30, 0.59, 0.11 );
diff --git a/effects/invert/data/1.40/invert.frag b/effects/invert/data/1.40/invert.frag
index 6dee1e60ad..632f0a3d88 100644
--- a/effects/invert/data/1.40/invert.frag
+++ b/effects/invert/data/1.40/invert.frag
@@ -3,13 +3,13 @@ uniform sampler2D sampler;
 uniform vec4 modulation;
 uniform float saturation;
 
-in vec2 varyingTexCoords;
+in vec2 texcoord0;
 
 out vec4 fragColor;
 
 void main()
 {
-    vec4 tex = texture(sampler, varyingTexCoords);
+    vec4 tex = texture(sampler, texcoord0);
 
     if (saturation != 1.0) {
         vec3 desaturated = tex.rgb * vec3( 0.30, 0.59, 0.11 );
diff --git a/effects/invert/invert.cpp b/effects/invert/invert.cpp
index 2ecad094ca..4243f6bf21 100644
--- a/effects/invert/invert.cpp
+++ b/effects/invert/invert.cpp
@@ -22,6 +22,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "invert.h"
 
 #include <QAction>
+#include <QFile>
 #include <kwinglutils.h>
 #include <kwinglplatform.h>
 #include <KGlobalAccel>
@@ -56,7 +57,6 @@ InvertEffect::InvertEffect()
     connect(b, SIGNAL(triggered(bool)), this, SLOT(toggleWindow()));
 
     connect(effects, SIGNAL(windowClosed(KWin::EffectWindow*)), this, SLOT(slotWindowClosed(KWin::EffectWindow*)));
-    connect(effects, SIGNAL(screenGeometryChanged(const QSize&)), this, SLOT(resetShader()));
 }
 
 InvertEffect::~InvertEffect()
@@ -79,7 +79,13 @@ bool InvertEffect::loadData()
         shadersDir = QStringLiteral("kwin/shaders/1.40/");
     const QString fragmentshader =  QStandardPaths::locate(QStandardPaths::GenericDataLocation, shadersDir + QStringLiteral("invert.frag"));
 
-    m_shader = ShaderManager::instance()->loadFragmentShader(ShaderManager::GenericShader, fragmentshader);
+    QFile ff(fragmentshader);
+    if (!ff.open(QIODevice::ReadOnly)) {
+        qCCritical(KWINEFFECTS) << "Couldn't open" << fragmentshader << "for reading!";
+        return false;
+    }
+
+    m_shader = ShaderManager::instance()->generateCustomShader(ShaderTrait::MapTexture, QByteArray(), ff.readAll());
     if (!m_shader->isValid()) {
         qCCritical(KWINEFFECTS) << "The shader failed to load!";
         return false;
@@ -110,11 +116,7 @@ void InvertEffect::drawWindow(EffectWindow* w, int mask, QRegion region, WindowP
     bool useShader = m_valid && (m_allWindows != m_windows.contains(w));
     if (useShader) {
         ShaderManager *shaderManager = ShaderManager::instance();
-        GLShader *genericShader = shaderManager->pushShader(ShaderManager::GenericShader);
-        QMatrix4x4 screenTransformation = genericShader->getUniformMatrix4x4("screenTransformation");
-        shaderManager->popShader();
         shaderManager->pushShader(m_shader);
-        m_shader->setUniform("screenTransformation", screenTransformation);
 
         data.shader = m_shader;
     }
@@ -131,8 +133,6 @@ void InvertEffect::paintEffectFrame(KWin::EffectFrame* frame, QRegion region, do
     if (m_valid && m_allWindows) {
         frame->setShader(m_shader);
         ShaderBinder binder(m_shader);
-        m_shader->setUniform("screenTransformation", QMatrix4x4());
-        m_shader->setUniform("windowTransformation", QMatrix4x4());
         effects->paintEffectFrame(frame, region, opacity, frameOpacity);
     } else {
         effects->paintEffectFrame(frame, region, opacity, frameOpacity);
@@ -172,11 +172,6 @@ bool InvertEffect::provides(Feature f)
     return f == ScreenInversion;
 }
 
-void InvertEffect::resetShader()
-{
-    ShaderManager::instance()->resetShader(m_shader, ShaderManager::GenericShader);
-}
-
 } // namespace
 
 #include "invert.moc"
diff --git a/effects/invert/invert.h b/effects/invert/invert.h
index 229c206fce..1f946f6c45 100644
--- a/effects/invert/invert.h
+++ b/effects/invert/invert.h
@@ -54,9 +54,6 @@ public Q_SLOTS:
     void toggleWindow();
     void slotWindowClosed(KWin::EffectWindow *w);
 
-private Q_SLOTS:
-    void resetShader();
-
 protected:
     bool loadData();