diff --git a/kwin/build.sh b/kwin/build.sh
index 190c0dd..95550c2 100755
--- a/kwin/build.sh
+++ b/kwin/build.sh
@@ -48,6 +48,16 @@ generate() {
     echo ""
     cat "../resources/shaders/common.glsl"
     cat "../resources/shaders/$1.frag"
+  } > "${BUILD_DIR}/kwin4_effect_$1/contents/shaders/$1_core.frag"
+
+  {
+    echo "#version 100"
+    echo "#define KWIN_LEGACY"
+    echo ""
+    echo "// This file is automatically generated during the build process."
+    echo ""
+    cat "../resources/shaders/common.glsl"
+    cat "../resources/shaders/$1.frag"
   } > "${BUILD_DIR}/kwin4_effect_$1/contents/shaders/$1.frag"
 }
 
diff --git a/kwin/main.js.in b/kwin/main.js.in
index a0d96c6..426def2 100755
--- a/kwin/main.js.in
+++ b/kwin/main.js.in
@@ -1,8 +1,7 @@
 /*
-    KWin - the KDE window manager
-    This file is part of the KDE project.
+    This file is part of the Burn-My-Windows project.
 
-    SPDX-FileCopyrightText: 2018, 2021, 2022 Vlad Zahorodnii <vlad.zahorodnii@kde.org>, Martin Flöser <mgraesslin@kde.org>, Simon Schneegans
+    SPDX-FileCopyrightText: 2018, 2021, 2022 Vlad Zahorodnii <vlad.zahorodnii@kde.org>, Martin Flöser <mgraesslin@kde.org>, Simon Schneegans <code@simonschneegans.de>
 
     SPDX-License-Identifier: GPL-3.0-or-later
 */
@@ -26,7 +25,7 @@ class Effect {
         effects.windowClosed.connect(this.slotWindowClosed.bind(this));
         effects.windowDataChanged.connect(this.slotWindowDataChanged.bind(this));
 
-        this.shader = effect.addShader(Effect.MapTexture, "%NICK%.frag");
+        this.shader = effect.addFragmentShader(Effect.MapTexture, "%NICK%.frag");
 
         this.loadConfig();
     }
@@ -109,7 +108,7 @@ class Effect {
             animations: [
                 {
                     type: Effect.ShaderUniform,
-                    shader: this.shader,
+                    fragmentShader: this.shader,
                     uniform: "uForOpening",
                     from: 1.0,
                     to: 1.0
@@ -143,7 +142,7 @@ class Effect {
             animations: [
                 {
                     type: Effect.ShaderUniform,
-                    shader: this.shader,
+                    fragmentShader: this.shader,
                     uniform: "uForOpening",
                     from: 0.0,
                     to: 0.0
diff --git a/kwin/metadata.desktop.in b/kwin/metadata.desktop.in
index c975bed..25dc34c 100755
--- a/kwin/metadata.desktop.in
+++ b/kwin/metadata.desktop.in
@@ -6,7 +6,7 @@ Comment=%DESCRIPTION%
 Type=Service
 X-KDE-ServiceTypes=KWin/Effect,KCModule
 X-KDE-PluginInfo-Author=Vlad Zahorodnii, Martin Flöser, Simon Schneegans
-X-KDE-PluginInfo-Email=vlad.zahorodnii@kde.org, mgraesslin@kde.org
+X-KDE-PluginInfo-Email=vlad.zahorodnii@kde.org, mgraesslin@kde.org, code@simonschneegans.de
 X-KDE-PluginInfo-Name=kwin4_effect_%NICK%
 X-KDE-PluginInfo-Version=1
 X-KDE-PluginInfo-Category=Window Open/Close Animation
diff --git a/resources/shaders/common.glsl b/resources/shaders/common.glsl
index 46e6d5c..6a2dc8f 100644
--- a/resources/shaders/common.glsl
+++ b/resources/shaders/common.glsl
@@ -17,31 +17,60 @@
 
 // --------------------------------------------------------------------- standard uniforms
 
-// uForOpening: True if a window-open animation is ongoing, false otherwise.
-// uTexture:    Contains the texture of the window.
-// uProgress:   A value which transitions from 0 to 1 during the entire animation.
-// uTime:       A steadily increasing value in seconds.
-// uSize:       The size of uTexture in pixels.
-// uPadding:    The empty area around the actual window (e.g. where the shadow is drawn).
+// Each shader can access these standard uniforms:
 
-#ifdef KWIN
+// bool      uForOpening: True if a window-open animation is ongoing, false otherwise.
+// sampler2D uTexture:    Contains the texture of the window.
+// float     uProgress:   A value which transitions from 0 to 1 during the animation.
+// float     uTime:       A steadily increasing value in seconds.
+// vec2      uSize:       The size of uTexture in pixels.
+// float     uPadding:    The empty area around the actual window (e.g. where the shadow
+//                        is drawn). For now, this will only be set on GNOME.
 
-uniform bool uForOpening;
-uniform sampler2D uTexture;
+// Furthermore, there is the global input "vec2 iTexCoord" and the output "vec4 oColor".
+
+#ifdef KWIN  // --------------------------------------------------------------------------
+
+uniform float forOpening;
+uniform sampler2D sampler;
+uniform float textureWidth;
+uniform float textureHeight;
 uniform float animationProgress;
-// uniform float uTime;
-// uniform vec2 uSize;
-// uniform float uPadding;
+
+vec2 uSize       = vec2(textureWidth, textureHeight);
+bool uForOpening = forOpening == 1.0;
 
 in vec2 texcoord0;
 out vec4 fragColor;
 
+#define uTexture sampler;
 #define uProgress animationProgress
+#define uPadding 0.0
 #define iTexCoord texcoord0
 #define oColor fragColor
 
-#else
+#elif KWIN_LEGACY  // --------------------------------------------------------------------
 
+uniform float forOpening;
+uniform sampler2D sampler;
+uniform float textureWidth;
+uniform float textureHeight;
+uniform float animationProgress;
+
+vec2 uSize       = vec2(textureWidth, textureHeight);
+bool uForOpening = forOpening == 1.0;
+
+varying vec2 texcoord0;
+
+#define uTexture sampler;
+#define uProgress animationProgress
+#define uPadding 0.0
+#define iTexCoord texcoord0
+#define oColor gl_fragColor
+
+#else  // GNOME --------------------------------------------------------------------------
+
+// On GNOME, the uniforms are just normal uniforms.
 uniform bool uForOpening;
 uniform sampler2D uTexture;
 uniform float uProgress;
@@ -49,10 +78,11 @@ uniform float uTime;
 uniform vec2 uSize;
 uniform float uPadding;
 
+// On GNOME, we set iTexCoord and oColor to be aliases for the cogl variables.
 #define iTexCoord cogl_tex_coord_in[0]
 #define oColor cogl_color_out
 
-#endif
+#endif  // -------------------------------------------------------------------------------
 
 // ----------------------------------------------------------------- compositing operators