1 files changed, 33 insertions, 0 deletions
diff --git a/src/quick/scenegraph/shaders_ng/outlinedtext.frag b/src/quick/scenegraph/shaders_ng/outlinedtext.frag
new file mode 100644
index 0000000000..0023ed5467
--- /dev/null
+++ b/src/quick/scenegraph/shaders_ng/outlinedtext.frag
@@ -0,0 +1,33 @@
+#version 440
+
+layout(location = 0) in vec2 sampleCoord;
+layout(location = 1) in vec2 sCoordUp;
+layout(location = 2) in vec2 sCoordDown;
+layout(location = 3) in vec2 sCoordLeft;
+layout(location = 4) in vec2 sCoordRight;
+
+layout(location = 0) out vec4 fragColor;
+
+layout(binding = 1) uniform sampler2D _qt_texture;
+
+layout(std140, binding = 0) uniform buf {
+    // must match styledtext
+    mat4 matrix;
+    vec4 color;
+    vec2 textureScale;
+    float dpr;
+    vec4 styleColor;
+    vec2 shift;
+} ubuf;
+
+void main()
+{
+    float glyph = texture(_qt_texture, sampleCoord).r;
+    float outline = clamp(clamp(texture(_qt_texture, sCoordUp).r +
+                                texture(_qt_texture, sCoordDown).r +
+                                texture(_qt_texture, sCoordLeft).r +
+                                texture(_qt_texture, sCoordRight).r,
+                                0.0, 1.0) - glyph,
+                          0.0, 1.0);
+    fragColor = outline * ubuf.styleColor + glyph * ubuf.color;
+}