🎉 Add initial matrix shader

src/extension/shaderSnippets.js

@@ -81,45 +81,3 @@ function noise() {
   }
   `;
 }
-
-// This method requires the uniforms from standardUniforms() to be available.
-// It returns two values: The first is an alpha value which can be used for the window
-// texture. This gradually dissolves the window from top to bottom. The second can be used
-// to mask any effect, it will be most opaque where the window is currently fading and
-// gradually dissolve to zero over time.
-// hideTime:      A value in [0..1]. It determines the percentage of the animation which
-//                is spent for hiding the window. 1-hideTime will be spent thereafter for
-//                dissolving the effect mask.
-// fadeWidth:     The relative size of the window-hiding gradient in [0..1].
-// edgeFadeWidth: The pixel width of the effect fading range at the edges of the window.
-function effectMask() {
-  return `
-  vec2 effectMask(float hideTime, float fadeWidth, float edgeFadeWidth) {
-    float burnProgress      = clamp(uProgress/hideTime, 0, 1);
-    float afterBurnProgress = clamp((uProgress-hideTime)/(1-hideTime), 0, 1);
-
-    // Gradient from top to bottom.
-    float t = cogl_tex_coord_in[0].t * (1 - fadeWidth);
-
-    // Visible part of the window. Gradually dissolves towards the bottom.
-    float windowMask = 1 - clamp((burnProgress - t) / fadeWidth, 0, 1);
-
-    // Gradient from top burning window.
-    float effectMask = clamp(t*(1-windowMask)/burnProgress, 0, 1);
-
-    // Fade-out when the window burned down.
-    if (uProgress > hideTime) {
-      effectMask *= mix(1, 1-t, afterBurnProgress) * pow(1-afterBurnProgress, 2);
-    }
-
-    // Fade at window borders.
-    vec2 pos = cogl_tex_coord_in[0].st * vec2(uSizeX, uSizeY);
-    effectMask *= clamp(pos.x / edgeFadeWidth, 0, 1);
-    effectMask *= clamp(pos.y / edgeFadeWidth, 0, 1);
-    effectMask *= clamp((uSizeX - pos.x) / edgeFadeWidth, 0, 1);
-    effectMask *= clamp((uSizeY - pos.y) / edgeFadeWidth, 0, 1);
-
-    return vec2(windowMask, effectMask);
-  }
-  `;
-}