custom shader for building gradian

2020-09-11 11:40:39 +02:00
parent 2c673bef63
commit f73d3cceb7
5 changed files with 248 additions and 76 deletions
@@ -0,0 +1,33 @@
+// https://gamedevelopment.tutsplus.com/tutorials/a-beginners-guide-to-coding-graphics-shaders--cms-23313
+uniform vec3 topColor;
+uniform vec3 groundColor;
+uniform vec3 bottomColor;
+varying vec3 vWorldPosition;
+void main() {
+  float h = vWorldPosition.y;
+  if(h > 0.0)
+  {
+    gl_FragColor = vec4(topColor,1.0);
+  }
+  else
+  {
+    // gl_FragColor = vec4(bottomColor,1.0);
+    // h = h * -1.0;
+    // float hh = abs(normalize( vWorldPosition ).y);
+    gl_FragColor = vec4(
+      mix(
+        groundColor,
+        bottomColor,
+        min(abs(h)/100.0,1.0)
+        // min(h/150.0 , 2.0)
+        // max(
+        //   pow(
+        //     max( hh , 0.0),
+        //     exponent
+        //   ),
+        //   0.0
+        // )
+      ), 1.0
+    );
+  }
+}