extra-animations: carpet: Change tabs to four spaces in shader

Author: soreau

src/extra-animations/carpet.hpp

@@ -126,13 +126,13 @@ vec4 single_roll(vec2 uvpos_var, float progress, int direction)
             if (direction == 1)
             {
                 pfrag = get_pixel(vec2(1.0 - uv.x, uv.y));
-			} else if (direction == 2)
+            } else if (direction == 2)
             {
                 pfrag = get_pixel(vec2(uv.x, 1.0 - uv.y));
-			} else
+            } else
             {
                 pfrag = get_pixel(uv);
-			}
+            }
         }
         // store color for fragment mixing with current fragment if translucent
         wfrag = mix(pfrag, wfrag, wfrag.a);
@@ -168,13 +168,13 @@ vec4 single_roll(vec2 uvpos_var, float progress, int direction)
             if (direction == 1)
             {
                 pfrag = get_pixel(vec2(1.0 - uv.x, uv.y));
-			} else if (direction == 2)
+            } else if (direction == 2)
             {
                 pfrag = get_pixel(vec2(uv.x, 1.0 - uv.y));
-			} else
+            } else
             {
                 pfrag = get_pixel(uv);
-			}
+            }
         }
         // compute lighting
         pfrag = vec4(clamp(pfrag.rgb + (angle / -M_PI), 0.0, 1.0), pfrag.a);