4 files changed, 12 insertions, 12 deletions
diff --git a/res/effectlib/distancefieldtext.frag b/res/effectlib/distancefieldtext.frag
index 1d83490..2236f9c 100644
--- a/res/effectlib/distancefieldtext.frag
+++ b/res/effectlib/distancefieldtext.frag
@@ -20,8 +20,8 @@ void main()
 #ifdef use_fallback
     highp float alpha = smoothstep(alphas.x, alphas.y, distance);
 #else
-    highp float f = fwidth(distance);
-    highp float alpha = smoothstep(0.5 - f, 0.5, distance);
+    highp float f = fwidth(distance) * 0.5;
+    highp float alpha = smoothstep(0.5 - f, 0.5 + f, distance);
 #endif
 
     gl_FragColor = color * alpha;
diff --git a/res/effectlib/distancefieldtext_core.frag b/res/effectlib/distancefieldtext_core.frag
index f11dcc1..a3a25a2 100644
--- a/res/effectlib/distancefieldtext_core.frag
+++ b/res/effectlib/distancefieldtext_core.frag
@@ -6,6 +6,6 @@ uniform vec4 color;
 void main()
 {
     float distance = texture(_qt_texture, sampleCoord).r;
-    float f = fwidth(distance);
-    fragOutput = color * smoothstep(0.5 - f, 0.5, distance);
+    float f = fwidth(distance) * 0.5;
+    fragOutput = color * smoothstep(0.5 - f, 0.5 + f, distance);
 }
diff --git a/res/effectlib/distancefieldtext_dropshadow.frag b/res/effectlib/distancefieldtext_dropshadow.frag
index fdb68ba..2f6c9be 100644
--- a/res/effectlib/distancefieldtext_dropshadow.frag
+++ b/res/effectlib/distancefieldtext_dropshadow.frag
@@ -25,8 +25,8 @@ void main()
 #ifdef use_fallback
     highp float shadowAlpha = smoothstep(alphas.x, alphas.y, shadowDistance);
 #else
-    highp float shadowDistanceD = fwidth(shadowDistance);
-    highp float shadowAlpha = smoothstep(0.5 - shadowDistanceD, 0.5, shadowDistance);
+    highp float shadowDistanceD = fwidth(shadowDistance) * 0.5;
+    highp float shadowAlpha = smoothstep(0.5 - shadowDistanceD, 0.5 + shadowDistanceD, shadowDistance);
 #endif
 
     highp vec4 shadowPixel = color * shadowColor * shadowAlpha;
@@ -38,8 +38,8 @@ void main()
 #ifdef use_fallback
     highp float textAlpha = smoothstep(alphas.x, alphas.y, textDistance);
 #else
-    highp float textDistanceD = fwidth(textDistance);
-    highp float textAlpha = smoothstep(0.5 - textDistanceD, 0.5, textDistance);
+    highp float textDistanceD = fwidth(textDistance) * 0.5;
+    highp float textAlpha = smoothstep(0.5 - textDistanceD, 0.5 + textDistanceD, textDistance);
 #endif
 
     highp vec4 textPixel = color * textAlpha;
diff --git a/res/effectlib/distancefieldtext_dropshadow_core.frag b/res/effectlib/distancefieldtext_dropshadow_core.frag
index e13182e..8e8c61d 100644
--- a/res/effectlib/distancefieldtext_dropshadow_core.frag
+++ b/res/effectlib/distancefieldtext_dropshadow_core.frag
@@ -12,16 +12,16 @@ void main()
                                    clamp(shadowSampleCoord,
                                          normalizedTextureBounds.xy,
                                          normalizedTextureBounds.zw)).r;
-    float shadowDistanceD = fwidth(shadowDistance);
-    float shadowAlpha = smoothstep(0.5 - shadowDistanceD, 0.5, shadowDistance);
+    float shadowDistanceD = fwidth(shadowDistance) * 0.5;
+    float shadowAlpha = smoothstep(0.5 - shadowDistanceD, 0.5 + shadowDistanceD, shadowDistance);
     vec4 shadowPixel = color * shadowColor * shadowAlpha;
 
     float textDistance = texture(_qt_texture,
                                  clamp(sampleCoord,
                                        normalizedTextureBounds.xy,
                                        normalizedTextureBounds.zw)).r;
-    float textDistanceD = fwidth(textDistance);
-    float textAlpha = smoothstep(0.5 - textDistanceD, 0.5, textDistance);
+    float textDistanceD = fwidth(textDistance) * 0.5;
+    float textAlpha = smoothstep(0.5 - textDistanceD, 0.5 + textDistanceD, textDistance);
     vec4 textPixel = color * textAlpha;
 
     fragOutput = mix(shadowPixel, textPixel, textPixel.a);