🔧 Use RGB for TV color

kwin/tv/onSettingsChanged.js

@@ -2,4 +2,4 @@
 // The code below is called whenever the user changes something in the configuration of
 // the effect.
 
-effect.setUniform(this.shader, 'uColor', effect.readConfig('Color', 'white'));
+effect.setUniform(this.shader, 'uColor', this.readRGBConfig('Color'));

resources/shaders/tv.frag

@@ -13,7 +13,7 @@
 
 // The content from common.glsl is automatically prepended to each shader effect.
 
-uniform vec4 uColor;
+uniform vec3 uColor;
 
 const float BLUR_WIDTH = 0.01;  // Width of the gradients.
 const float TB_TIME    = 0.7;   // Relative time for the top/bottom animation.
@@ -55,7 +55,7 @@ void main() {
   float mask = tbMask * lrMask * ffMask;
 
   vec4 oColor = getInputColor(coords);
-  oColor.rgb  = mix(oColor.rgb, uColor.rgb * oColor.a, smoothstep(0.0, 1.0, prog));
+  oColor.rgb  = mix(oColor.rgb, uColor * oColor.a, smoothstep(0.0, 1.0, prog));
   oColor.a *= mask;
 
   // These are pretty useful for understanding how this works.

src/TVEffect.js

@@ -50,8 +50,8 @@ var TVEffect = class {
       // Write all uniform values at the start of each animation.
       shader.connect('begin-animation', (shader, settings) => {
         const c = Clutter.Color.from_string(settings.get_string('tv-effect-color'))[1];
-        shader.set_uniform_float(shader._uColor, 4,
-                                 [c.red / 255, c.green / 255, c.blue / 255, 1.0]);
+        shader.set_uniform_float(shader._uColor, 3,
+                                 [c.red / 255, c.green / 255, c.blue / 255]);
       });
     });
   }