Timeline: Crisper selection rectangles

This change removes the "mini gradient" between outline and filling.
At least in HighDPI, this gives a crisper impression.

Change-Id: I15b97393a8650c28dc52a38d4d106adc95ce261c
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>

1 files changed, 2 insertions, 5 deletions

diff --git a/src/libs/timeline/qml/timelineitems.frag b/src/libs/timeline/qml/timelineitems.frag
index f1908e43bb..97d79770f6 100644
--- a/src/libs/timeline/qml/timelineitems.frag
+++ b/src/libs/timeline/qml/timelineitems.frag
@@ -32,16 +32,13 @@ varying lowp vec3 edgeColor;
 varying lowp vec3 color;
 varying lowp vec2 barycentric;
 
-lowp vec4 zero = vec4(0.0);
 void main()
 {
-    lowp vec2 d = fwidth(barycentric) * 5.0;
-    lowp vec4 edge_closeness = smoothstep(zero, vec4(d.x, d.y, d.x, d.y),
+    lowp vec2 d = fwidth(barycentric) * 4.0;
+    lowp vec4 edge_closeness = step(vec4(d.x, d.y, d.x, d.y),
             vec4(barycentric.x, barycentric.y, 1.0 - barycentric.x, 1.0 - barycentric.y));
     lowp float total = min(min(edge_closeness[0], edge_closeness[1]),
             min(edge_closeness[2], edge_closeness[3]));
-    // square to make lines sharper
-    total = total > 0.5 ? (1.0 - (1.0 - total) * (1.0 - total) * 2.0) : total * total * 2.0;
     gl_FragColor.rgb = mix(edgeColor, color, total);
     gl_FragColor.a = 1.0;
 }