@@ -1,38 +1,30 @@
 /**
- * Landscape
- * Simple raymarching shader with camera, originally by Paulo Falcão
- * Ported from the webGL version in GLSL Sandbox:
- * http://glsl.heroku.com/e#3213.0
- *
+ * Elevated
+ * https://www.shadertoy.com/view/MdX3Rr by inigo quilez
+ * Created by inigo quilez - iq/2013
+ * License Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
+ * Processing port by Raphaël de Courville.
  */
 
-PShader landscape;
-PGraphics pg;
+PShader shader;
 
 void setup() {
   size(640, 360, P2D);
-  
-  // This effect can be too demanding on older GPUs, 
-  // so we render it on a smaller res offscreen surface
-  pg = createGraphics(320, 180, P2D);
-  pg.noStroke(); 
- 
-  landscape = loadShader("landscape.glsl");
-  landscape.set("resolution", float(width), float(height));
+  noStroke();
+   
+  // The code of this shader shows how to integrate shaders from shadertoy
+  // into Processing with minimal changes.
+  shader = loadShader("landscape.glsl");
+  shader.set("resolution", float(width), float(height));   
 }
 
 void draw() {
-  landscape.set("time", millis() / 1000.0);
-  landscape.set("mouse", float(mouseX), height - float(mouseY));
-  
-  // This kind of raymarching effects are entirely implemented in the
-  // fragment shader, they only need a quad covering the entire view 
-  // area so every pixel is pushed through the shader.  
-  pg.beginDraw();
-  pg.shader(landscape);  
-  pg.rect(0, 0, width, height);
-  pg.endDraw();
+  background(0);
+    
+  shader.set("time", (float)(millis()/1000.0));
+  shader(shader); 
+  rect(0, 0, width, height);
 
-  // Scaling up offscreen surface to cover entire screen.
-  image(pg, 0, 0, width, height);  
+  frame.setTitle("frame: " + frameCount + " - fps: " + frameRate);     
 }
+