2 files changed, 48 insertions, 0 deletions
diff --git a/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.fsh b/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.fsh
new file mode 100644
index 000000000..278390056
--- /dev/null
+++ b/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.fsh
@@ -0,0 +1,40 @@
+#version 120
+
+// Rect specific uniforms
+uniform float scaleFactor;
+uniform float radius;
+uniform vec2 halfSize;
+uniform vec2 centerPos;
+
+// Outline specific uniforms
+uniform float borderThickness;
+uniform float borderBlur;
+
+varying vec4 color;
+
+// From https://www.shadertoy.com/view/WtdSDs
+float roundedRectSDF(vec2 center, vec2 halfSize, float radius) {
+    return length(max(abs(center) - halfSize + radius, 0.0)) - radius;
+}
+
+void main() {
+    float xScale = gl_ModelViewMatrix[0][0];
+    float yScale = gl_ModelViewMatrix[1][1];
+    float xTranslation = gl_ModelViewMatrix[3][0];
+    float yTranslation = gl_ModelViewMatrix[3][1];
+
+    vec2 newHalfSize = vec2(halfSize.x * xScale, halfSize.y * yScale);
+
+    float newCenterPosY = centerPos.y;
+    if (yScale > 1.0) {
+        newCenterPosY = centerPos.y - (halfSize.y * (yScale - 1));
+    }
+
+    vec2 newCenterPos = vec2((centerPos.x * xScale) + (xTranslation * scaleFactor), newCenterPosY - (yTranslation * scaleFactor));
+
+    float distance = roundedRectSDF(gl_FragCoord.xy - newCenterPos, newHalfSize, max(radius, borderThickness));
+
+    // In testing, keeping the upper bound at 1.0 and letting the lower be changable seemed the most sensible for nice results
+    float smoothed = 1.0 - smoothstep(borderBlur, 1.0, abs(distance / borderThickness));
+    gl_FragColor = color * vec4(1.0, 1.0, 1.0, smoothed);
+}
diff --git a/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.vsh b/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.vsh
new file mode 100644
index 000000000..acfb52662
--- /dev/null
+++ b/src/main/resources/assets/skyhanni/shaders/rounded_rect_outline.vsh
@@ -0,0 +1,8 @@
+#version 120
+
+varying vec4 color;
+
+void main() {
+    gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
+    color = gl_Color;
+}