Sketch ini

Sketch3D/rsc/shaders/stroke.frag

@@ -0,0 +1,28 @@
+
+#version 330 core
+
+uniform vec4 Color;
+
+layout(location = 0) out vec4 color;
+
+uniform float Target;
+uniform vec4 BGCol;
+
+#define A 0.1f
+
+void main() {
+  float x = gl_FragCoord.z;
+  
+  float val = A; 
+
+  float f = Target * 2;
+
+  if (x < f) {
+    val = ((A - 1) / f) * x + 1;
+  }
+  
+  val = clamp(val, A, 1);
+
+
+  color = vec4((Color.xyz - BGCol.xyz) * val + BGCol.xyz, 1.f);
+}