1 files changed, 20 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/gpu_shader_edges_overlay_frag.glsl b/source/blender/gpu/shaders/gpu_shader_edges_overlay_frag.glsl
new file mode 100644
index 00000000000..0538c037dcf
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_edges_overlay_frag.glsl
@@ -0,0 +1,20 @@
+
+#define SMOOTH 1
+
+const float transitionWidth = 1.0;
+
+uniform vec4 fillColor = vec4(0);
+uniform vec4 outlineColor = vec4(0,0,0,1);
+
+noperspective in vec3 distanceToOutline;
+
+out vec4 FragColor;
+
+void main() {
+	float edgeness = min(min(distanceToOutline.x, distanceToOutline.y), distanceToOutline.z);
+#if SMOOTH
+	FragColor = mix(outlineColor, fillColor, smoothstep(0, transitionWidth, edgeness));
+#else
+	FragColor = (edgeness <= 0) ? outlineColor : fillColor;
+#endif
+}