1 files changed, 21 insertions, 0 deletions
diff --git a/src/imports/controls/material/shaders/+hlsl/RectangularGlow.frag b/src/imports/controls/material/shaders/+hlsl/RectangularGlow.frag
new file mode 100644
index 00000000..69d9f852
--- /dev/null
+++ b/src/imports/controls/material/shaders/+hlsl/RectangularGlow.frag
@@ -0,0 +1,21 @@
+cbuffer ConstantBuffer : register(b0)
+{
+    float4x4 qt_Matrix;
+    float qt_Opacity;
+    float relativeSizeX;
+    float relativeSizeY;
+    float spread;
+    float4 color;
+}
+
+float linearstep(float e0, float e1, float x) { return clamp((x - e0) / (e1 - e0), 0.0, 1.0); }
+
+float4 main(float4 position : SV_POSITION, float2 coord : TEXCOORD0) : SV_TARGET
+{
+    float alpha =
+        smoothstep(0.0, relativeSizeX, 0.5 - abs(0.5 - coord.x)) *
+        smoothstep(0.0, relativeSizeY, 0.5 - abs(0.5 - coord.y));
+
+    float spreadMultiplier = linearstep(spread, 1.0 - spread, alpha);
+    return color * qt_Opacity * spreadMultiplier * spreadMultiplier;
+}