rewrote outlined text

shader/outline.fs

@@ -0,0 +1,40 @@
+#version 330
+in vec2 fragTexCoord;
+in vec4 fragColor;
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+uniform vec2 textureSize;
+uniform float outlineSize;
+uniform vec4 outlineColor;
+uniform float alpha;
+uniform float smoothness = 1.0; // Add this uniform for control (0.0-1.0)
+out vec4 finalColor;
+
+void main()
+{
+    vec4 texel = texture(texture0, fragTexCoord);
+    vec2 texelScale = vec2(outlineSize/textureSize.x, outlineSize/textureSize.y);
+
+    // Calculate outline
+    float outline = 0.0;
+    int ringSamples = 64;
+    int rings = 4;
+    for(int ring = 1; ring <= rings; ring++) {
+        float ringRadius = float(ring) / float(rings);
+        for(int i = 0; i < ringSamples; i++) {
+            float angle = 2.0 * 3.14159 * float(i) / float(ringSamples);
+            vec2 offset = vec2(cos(angle), sin(angle)) * texelScale * ringRadius;
+            outline += texture(texture0, fragTexCoord + offset).a / float(rings);
+        }
+    }
+    outline = min(outline, 1.0);
+    outline = smoothstep(0.1, 0.6, outline);
+
+    float edgeStart = 0.5 - smoothness * 0.3;
+    float edgeEnd = 0.5 + smoothness * 0.3;
+    float textAlpha = smoothstep(edgeStart, edgeEnd, texel.a);
+    vec3 color = mix(outlineColor.rgb, texel.rgb, textAlpha);
+    float combinedAlpha = mix(outline * outlineColor.a, texel.a, textAlpha);
+
+    finalColor = vec4(color, combinedAlpha * alpha);
+}