diff --git a/examples/mandelbrot/assembly/index.ts b/examples/mandelbrot/assembly/index.ts
index 9c1b8326..880126dd 100644
--- a/examples/mandelbrot/assembly/index.ts
+++ b/examples/mandelbrot/assembly/index.ts
@@ -1,41 +1,47 @@
 // see: https://en.wikipedia.org/wiki/Mandelbrot_set
 
-/** Computes the number of iterations in the rectangle `width` x `height`, limited to `max`. */
-export function compute(width: u32, height: u32, limit: u32): void {
+/** Number of discrete color values on the JS side. */
+const NUM_COLORS = 2048;
+
+/** Computes a single line in the rectangle `width` x `height`. */
+export function computeLine(y: u32, width: u32, height: u32, limit: u32): void {
   var translateX = width / 1.6;
   var translateY = height / 2.0;
   var scale = 10.0 / min(3 * width, 4 * height);
-  for (let y: u32 = 0; y < height; ++y) {
-    let imaginary = (y - translateY) * scale;
-    for (let x: u32 = 0; x < width; ++x) {
-      let real = (x - translateX) * scale;
+  var imaginary = (y - translateY) * scale;
+  for (let x: u32 = 0; x < width; ++x) {
+    let real = (x - translateX) * scale;
 
-      // Iterate until either the escape radius or iteration limit is exceeded
-      let ix = 0.0, iy = 0.0, ixsq: f64, iysq: f64;
-      let iteration: u32 = 0;
-      while ((ixsq = ix * ix) + (iysq = iy * iy) <= 4.0) {
-        let t = ixsq - iysq + real;
-        iy = 2.0 * ix * iy + imaginary;
-        ix = t;
-        if (iteration >= limit) break;
-        ++iteration;
-      }
-
-      // Do a few extra iterations to reduce error margin
-      for (let i = 0; i < 4; ++i) {
-        let t = (ixsq = ix * ix) - (iysq = iy * iy) + real;
-        iy = 2.0 * ix * iy + imaginary;
-        ix = t;
-      }
-
-      // Renormalize, see: http://linas.org/art-gallery/escape/escape.html
-      let frac: f64 = JSMath.log(JSMath.log(sqrt(ix * ix + iy * iy))) / JSMath.LN2;
-      if (frac > 0) {
-        let norm: f64 = max<f64>(min<f64>((<f64>(iteration + 1) - frac) / limit, 1.0), 0.0);
-        store<u16>((y * width + x) << 1, <u32>(2047 * norm));
-      } else {
-        store<u16>((y * width + x) << 1, iteration * 2047 / limit);
-      }
+    // Iterate until either the escape radius or iteration limit is exceeded
+    let ix = 0.0, iy = 0.0, ixsq: f64, iysq: f64;
+    let iteration: u32 = 0;
+    while ((ixsq = ix * ix) + (iysq = iy * iy) <= 4.0) {
+      let ix_new = ixsq - iysq + real;
+      iy = 2.0 * ix * iy + imaginary;
+      ix = ix_new;
+      if (iteration >= limit) break;
+      ++iteration;
     }
+
+    // Do a few extra iterations to reduce error margin
+    for (let i = 0; i < 5 && iteration < limit; ++i, ++iteration) {
+      let ix_new = ix * ix - iy * iy + real;
+      iy = 2.0 * ix * iy + imaginary;
+      ix = ix_new;
+    }
+
+    // Renormalize, see: http://linas.org/art-gallery/escape/escape.html
+    let frac: f64 = JSMath.log(JSMath.log(sqrt(ix * ix + iy * iy))) / JSMath.LN2;
+    store<u16>((y * width + x) << 1,
+      isFinite(frac)
+        ? <u32>((NUM_COLORS - 1) * clamp((iteration + 1 - frac) / limit, 0.0, 1.0))
+        : (NUM_COLORS - 1) * iteration / limit
+    );
   }
 }
+
+/** Clamps a value between the given minimum and maximum. */
+@inline
+function clamp<T>(value: T, minValue: T, maxValue: T): T {
+  return min(max(value, minValue), maxValue);
+}
diff --git a/examples/mandelbrot/build/optimized.wasm b/examples/mandelbrot/build/optimized.wasm
index 06992d6c..56e54cb5 100644
Binary files a/examples/mandelbrot/build/optimized.wasm and b/examples/mandelbrot/build/optimized.wasm differ
diff --git a/examples/mandelbrot/build/optimized.wat b/examples/mandelbrot/build/optimized.wat
index 31a43f13..d4c83176 100644
--- a/examples/mandelbrot/build/optimized.wat
+++ b/examples/mandelbrot/build/optimized.wat
@@ -1,68 +1,75 @@
 (module
- (type $iiiv (func (param i32 i32 i32)))
+ (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $FF (func (param f64) (result f64)))
  (import "JSMath" "log" (func $~lib/math/JSMath.log (param f64) (result f64)))
  (import "JSMath" "LN2" (global $~lib/math/JSMath.LN2 f64))
- (memory $0 1)
- (export "compute" (func $assembly/index/compute))
+ (import "env" "memory" (memory $0 1))
+ (export "computeLine" (func $assembly/index/computeLine))
  (export "memory" (memory $0))
- (func $assembly/index/compute (; 1 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
-  (local $3 f64)
+ (func $assembly/index/computeLine (; 1 ;) (type $iiiiv) (param $0 i32) (param $1 i32) (param $2 i32) (param $3 i32)
   (local $4 f64)
-  (local $5 i32)
+  (local $5 f64)
   (local $6 i32)
-  (local $7 i32)
-  (local $8 f64)
+  (local $7 f64)
+  (local $8 i32)
   (local $9 i32)
   (local $10 f64)
   (local $11 f64)
   (local $12 f64)
   (local $13 f64)
   (local $14 f64)
-  (local $15 f64)
-  ;;@ assembly/index.ts:5:2
-  (set_local $13
-   ;;@ assembly/index.ts:5:19
-   (f64.div
-    (f64.convert_u/i32
-     (get_local $0)
-    )
-    ;;@ assembly/index.ts:5:27
-    (f64.const 1.6)
-   )
-  )
-  ;;@ assembly/index.ts:6:2
-  (set_local $14
-   ;;@ assembly/index.ts:6:19
+  ;;@ assembly/index.ts:8:2
+  (set_local $12
+   ;;@ assembly/index.ts:8:19
    (f64.div
     (f64.convert_u/i32
      (get_local $1)
     )
-    ;;@ assembly/index.ts:6:28
-    (f64.const 2)
+    ;;@ assembly/index.ts:8:27
+    (f64.const 1.6)
    )
   )
-  ;;@ assembly/index.ts:7:2
+  ;;@ assembly/index.ts:11:2
   (set_local $10
-   ;;@ assembly/index.ts:7:14
-   (f64.div
-    (f64.const 10)
-    ;;@ assembly/index.ts:7:21
-    (f64.min
-     ;;@ assembly/index.ts:7:25
-     (f64.mul
-      (f64.const 3)
-      (f64.convert_u/i32
-       ;;@ assembly/index.ts:7:29
-       (get_local $0)
-      )
+   ;;@ assembly/index.ts:11:18
+   (f64.mul
+    (f64.sub
+     (f64.convert_u/i32
+      ;;@ assembly/index.ts:11:19
+      (get_local $0)
      )
-     ;;@ assembly/index.ts:7:36
-     (f64.mul
-      (f64.const 4)
+     ;;@ assembly/index.ts:9:19
+     (f64.div
       (f64.convert_u/i32
-       ;;@ assembly/index.ts:7:40
-       (get_local $1)
+       (get_local $2)
+      )
+      ;;@ assembly/index.ts:9:28
+      (f64.const 2)
+     )
+    )
+    ;;@ assembly/index.ts:10:2
+    (tee_local $13
+     ;;@ assembly/index.ts:10:14
+     (f64.div
+      (f64.const 10)
+      ;;@ assembly/index.ts:10:21
+      (f64.min
+       ;;@ assembly/index.ts:10:25
+       (f64.mul
+        (f64.const 3)
+        (f64.convert_u/i32
+         ;;@ assembly/index.ts:10:29
+         (get_local $1)
+        )
+       )
+       ;;@ assembly/index.ts:10:36
+       (f64.mul
+        (f64.const 4)
+        (f64.convert_u/i32
+         ;;@ assembly/index.ts:10:40
+         (get_local $2)
+        )
+       )
       )
      )
     )
@@ -70,362 +77,324 @@
   )
   (loop $continue|0
    (if
-    ;;@ assembly/index.ts:8:23
+    ;;@ assembly/index.ts:12:23
     (i32.lt_u
-     (get_local $5)
-     ;;@ assembly/index.ts:8:27
+     (get_local $8)
+     ;;@ assembly/index.ts:12:27
      (get_local $1)
     )
     (block
-     ;;@ assembly/index.ts:9:4
+     ;;@ assembly/index.ts:13:4
      (set_local $11
-      ;;@ assembly/index.ts:9:20
+      ;;@ assembly/index.ts:13:15
       (f64.mul
        (f64.sub
         (f64.convert_u/i32
-         ;;@ assembly/index.ts:9:21
-         (get_local $5)
+         ;;@ assembly/index.ts:13:16
+         (get_local $8)
         )
-        ;;@ assembly/index.ts:9:25
-        (get_local $14)
+        ;;@ assembly/index.ts:13:20
+        (get_local $12)
        )
-       ;;@ assembly/index.ts:9:39
-       (get_local $10)
+       ;;@ assembly/index.ts:13:34
+       (get_local $13)
       )
      )
-     ;;@ assembly/index.ts:10:9
+     (set_local $4
+      ;;@ assembly/index.ts:16:13
+      (f64.const 0)
+     )
+     (set_local $5
+      ;;@ assembly/index.ts:16:23
+      (f64.const 0)
+     )
+     ;;@ assembly/index.ts:17:4
      (set_local $6
-      ;;@ assembly/index.ts:10:22
+      ;;@ assembly/index.ts:17:25
       (i32.const 0)
      )
-     (loop $continue|1
+     ;;@ assembly/index.ts:18:4
+     (block $break|1
+      (loop $continue|1
+       (if
+        ;;@ assembly/index.ts:18:11
+        (f64.le
+         (f64.add
+          (tee_local $14
+           ;;@ assembly/index.ts:18:19
+           (f64.mul
+            (get_local $4)
+            ;;@ assembly/index.ts:18:24
+            (get_local $4)
+           )
+          )
+          ;;@ assembly/index.ts:18:30
+          (tee_local $7
+           ;;@ assembly/index.ts:18:38
+           (f64.mul
+            (get_local $5)
+            ;;@ assembly/index.ts:18:43
+            (get_local $5)
+           )
+          )
+         )
+         ;;@ assembly/index.ts:18:50
+         (f64.const 4)
+        )
+        (block
+         ;;@ assembly/index.ts:20:6
+         (set_local $5
+          ;;@ assembly/index.ts:20:11
+          (f64.add
+           (f64.mul
+            (f64.mul
+             (f64.const 2)
+             ;;@ assembly/index.ts:20:17
+             (get_local $4)
+            )
+            ;;@ assembly/index.ts:20:22
+            (get_local $5)
+           )
+           ;;@ assembly/index.ts:20:27
+           (get_local $10)
+          )
+         )
+         ;;@ assembly/index.ts:21:6
+         (set_local $4
+          ;;@ assembly/index.ts:19:19
+          (f64.add
+           (f64.sub
+            (get_local $14)
+            ;;@ assembly/index.ts:19:26
+            (get_local $7)
+           )
+           ;;@ assembly/index.ts:19:33
+           (get_local $11)
+          )
+         )
+         ;;@ assembly/index.ts:22:30
+         (br_if $break|1
+          ;;@ assembly/index.ts:22:10
+          (i32.ge_u
+           (get_local $6)
+           ;;@ assembly/index.ts:22:23
+           (get_local $3)
+          )
+         )
+         ;;@ assembly/index.ts:23:6
+         (set_local $6
+          (i32.add
+           ;;@ assembly/index.ts:23:8
+           (get_local $6)
+           (i32.const 1)
+          )
+         )
+         (br $continue|1)
+        )
+       )
+      )
+     )
+     ;;@ assembly/index.ts:27:9
+     (set_local $9
+      ;;@ assembly/index.ts:27:17
+      (i32.const 0)
+     )
+     (loop $continue|2
       (if
-       ;;@ assembly/index.ts:10:25
-       (i32.lt_u
-        (get_local $6)
-        ;;@ assembly/index.ts:10:29
-        (get_local $0)
+       ;;@ assembly/index.ts:27:20
+       (i32.and
+        (if (result i32)
+         (tee_local $2
+          (i32.lt_s
+           (get_local $9)
+           ;;@ assembly/index.ts:27:24
+           (i32.const 5)
+          )
+         )
+         ;;@ assembly/index.ts:27:29
+         (i32.lt_u
+          (get_local $6)
+          ;;@ assembly/index.ts:27:41
+          (get_local $3)
+         )
+         (get_local $2)
+        )
+        (i32.const 1)
        )
        (block
-        ;;@ assembly/index.ts:11:6
-        (set_local $12
-         ;;@ assembly/index.ts:11:17
-         (f64.mul
+        ;;@ assembly/index.ts:28:6
+        (set_local $7
+         ;;@ assembly/index.ts:28:19
+         (f64.add
           (f64.sub
-           (f64.convert_u/i32
-            ;;@ assembly/index.ts:11:18
-            (get_local $6)
+           (f64.mul
+            (get_local $4)
+            ;;@ assembly/index.ts:28:24
+            (get_local $4)
+           )
+           ;;@ assembly/index.ts:28:29
+           (f64.mul
+            (get_local $5)
+            ;;@ assembly/index.ts:28:34
+            (get_local $5)
            )
-           ;;@ assembly/index.ts:11:22
-           (get_local $13)
           )
-          ;;@ assembly/index.ts:11:36
+          ;;@ assembly/index.ts:28:39
+          (get_local $11)
+         )
+        )
+        ;;@ assembly/index.ts:29:6
+        (set_local $5
+         ;;@ assembly/index.ts:29:11
+         (f64.add
+          (f64.mul
+           (f64.mul
+            (f64.const 2)
+            ;;@ assembly/index.ts:29:17
+            (get_local $4)
+           )
+           ;;@ assembly/index.ts:29:22
+           (get_local $5)
+          )
+          ;;@ assembly/index.ts:29:27
           (get_local $10)
          )
         )
-        (set_local $3
-         ;;@ assembly/index.ts:14:15
-         (f64.const 0)
-        )
+        ;;@ assembly/index.ts:30:6
         (set_local $4
-         ;;@ assembly/index.ts:14:25
-         (f64.const 0)
+         ;;@ assembly/index.ts:30:11
+         (get_local $7)
         )
-        ;;@ assembly/index.ts:15:6
-        (set_local $7
-         ;;@ assembly/index.ts:15:27
-         (i32.const 0)
-        )
-        ;;@ assembly/index.ts:16:6
-        (block $break|2
-         (loop $continue|2
-          (if
-           ;;@ assembly/index.ts:16:13
-           (f64.le
-            (f64.add
-             (tee_local $15
-              ;;@ assembly/index.ts:16:21
-              (f64.mul
-               (get_local $3)
-               ;;@ assembly/index.ts:16:26
-               (get_local $3)
-              )
-             )
-             ;;@ assembly/index.ts:16:32
-             (tee_local $8
-              ;;@ assembly/index.ts:16:40
-              (f64.mul
-               (get_local $4)
-               ;;@ assembly/index.ts:16:45
-               (get_local $4)
-              )
-             )
-            )
-            ;;@ assembly/index.ts:16:52
-            (f64.const 4)
-           )
-           (block
-            ;;@ assembly/index.ts:18:8
-            (set_local $4
-             ;;@ assembly/index.ts:18:13
-             (f64.add
-              (f64.mul
-               (f64.mul
-                (f64.const 2)
-                ;;@ assembly/index.ts:18:19
-                (get_local $3)
-               )
-               ;;@ assembly/index.ts:18:24
-               (get_local $4)
-              )
-              ;;@ assembly/index.ts:18:29
-              (get_local $11)
-             )
-            )
-            ;;@ assembly/index.ts:19:8
-            (set_local $3
-             ;;@ assembly/index.ts:17:16
-             (f64.add
-              (f64.sub
-               (get_local $15)
-               ;;@ assembly/index.ts:17:23
-               (get_local $8)
-              )
-              ;;@ assembly/index.ts:17:30
-              (get_local $12)
-             )
-            )
-            ;;@ assembly/index.ts:20:32
-            (br_if $break|2
-             ;;@ assembly/index.ts:20:12
-             (i32.ge_u
-              (get_local $7)
-              ;;@ assembly/index.ts:20:25
-              (get_local $2)
-             )
-            )
-            ;;@ assembly/index.ts:21:8
-            (set_local $7
-             (i32.add
-              ;;@ assembly/index.ts:21:10
-              (get_local $7)
-              (i32.const 1)
-             )
-            )
-            (br $continue|2)
-           )
-          )
-         )
-        )
-        ;;@ assembly/index.ts:25:11
+        ;;@ assembly/index.ts:27:48
         (set_local $9
-         ;;@ assembly/index.ts:25:19
-         (i32.const 0)
-        )
-        (loop $continue|3
-         (if
-          ;;@ assembly/index.ts:25:22
-          (i32.lt_s
-           (get_local $9)
-           ;;@ assembly/index.ts:25:26
-           (i32.const 4)
-          )
-          (block
-           ;;@ assembly/index.ts:26:8
-           (set_local $8
-            ;;@ assembly/index.ts:26:16
-            (f64.add
-             (f64.sub
-              ;;@ assembly/index.ts:26:24
-              (f64.mul
-               (get_local $3)
-               ;;@ assembly/index.ts:26:29
-               (get_local $3)
-              )
-              ;;@ assembly/index.ts:26:43
-              (f64.mul
-               (get_local $4)
-               ;;@ assembly/index.ts:26:48
-               (get_local $4)
-              )
-             )
-             ;;@ assembly/index.ts:26:54
-             (get_local $12)
-            )
-           )
-           ;;@ assembly/index.ts:27:8
-           (set_local $4
-            ;;@ assembly/index.ts:27:13
-            (f64.add
-             (f64.mul
-              (f64.mul
-               (f64.const 2)
-               ;;@ assembly/index.ts:27:19
-               (get_local $3)
-              )
-              ;;@ assembly/index.ts:27:24
-              (get_local $4)
-             )
-             ;;@ assembly/index.ts:27:29
-             (get_local $11)
-            )
-           )
-           ;;@ assembly/index.ts:28:8
-           (set_local $3
-            ;;@ assembly/index.ts:28:13
-            (get_local $8)
-           )
-           ;;@ assembly/index.ts:25:29
-           (set_local $9
-            (i32.add
-             ;;@ assembly/index.ts:25:31
-             (get_local $9)
-             (i32.const 1)
-            )
-           )
-           (br $continue|3)
-          )
+         (i32.add
+          ;;@ assembly/index.ts:27:50
+          (get_local $9)
+          (i32.const 1)
          )
         )
-        ;;@ assembly/index.ts:33:6
-        (if
-         ;;@ assembly/index.ts:33:10
-         (f64.gt
-          ;;@ assembly/index.ts:32:6
-          (tee_local $8
-           ;;@ assembly/index.ts:32:22
-           (f64.div
-            ;;@ assembly/index.ts:32:29
-            (call $~lib/math/JSMath.log
-             ;;@ assembly/index.ts:32:40
-             (call $~lib/math/JSMath.log
-              ;;@ assembly/index.ts:32:44
-              (f64.sqrt
-               ;;@ assembly/index.ts:32:49
-               (f64.add
-                (f64.mul
-                 (get_local $3)
-                 ;;@ assembly/index.ts:32:54
-                 (get_local $3)
-                )
-                ;;@ assembly/index.ts:32:59
-                (f64.mul
-                 (get_local $4)
-                 ;;@ assembly/index.ts:32:64
-                 (get_local $4)
-                )
-               )
-              )
-             )
-            )
-            ;;@ assembly/index.ts:32:72
-            (get_global $~lib/math/JSMath.LN2)
-           )
-          )
-          ;;@ assembly/index.ts:33:17
-          (f64.const 0)
-         )
-         ;;@ assembly/index.ts:35:8
-         (i32.store16
-          ;;@ assembly/index.ts:35:19
-          (i32.shl
-           (i32.add
-            ;;@ assembly/index.ts:35:20
-            (i32.mul
-             (get_local $5)
-             ;;@ assembly/index.ts:35:24
-             (get_local $0)
-            )
-            ;;@ assembly/index.ts:35:32
-            (get_local $6)
-           )
-           ;;@ assembly/index.ts:35:38
-           (i32.const 1)
-          )
-          ;;@ assembly/index.ts:35:41
-          (i32.trunc_u/f64
-           ;;@ assembly/index.ts:35:47
-           (f64.mul
-            (f64.const 2047)
-            ;;@ assembly/index.ts:34:24
-            (f64.max
-             ;;@ assembly/index.ts:34:33
-             (f64.min
-              ;;@ assembly/index.ts:34:42
-              (f64.div
-               (f64.sub
-                ;;@ assembly/index.ts:34:43
-                (f64.convert_u/i32
-                 ;;@ assembly/index.ts:34:49
-                 (i32.add
-                  (get_local $7)
-                  ;;@ assembly/index.ts:34:61
-                  (i32.const 1)
-                 )
-                )
-                ;;@ assembly/index.ts:34:66
-                (get_local $8)
-               )
-               (f64.convert_u/i32
-                ;;@ assembly/index.ts:34:74
-                (get_local $2)
-               )
-              )
-              ;;@ assembly/index.ts:34:81
-              (f64.const 1)
-             )
-             ;;@ assembly/index.ts:34:87
-             (f64.const 0)
-            )
-           )
-          )
-         )
-         ;;@ assembly/index.ts:37:8
-         (i32.store16
-          ;;@ assembly/index.ts:37:19
-          (i32.shl
-           (i32.add
-            ;;@ assembly/index.ts:37:20
-            (i32.mul
-             (get_local $5)
-             ;;@ assembly/index.ts:37:24
-             (get_local $0)
-            )
-            ;;@ assembly/index.ts:37:32
-            (get_local $6)
-           )
-           ;;@ assembly/index.ts:37:38
-           (i32.const 1)
-          )
-          ;;@ assembly/index.ts:37:41
-          (i32.div_u
-           (i32.mul
-            (get_local $7)
-            ;;@ assembly/index.ts:37:53
-            (i32.const 2047)
-           )
-           ;;@ assembly/index.ts:37:60
-           (get_local $2)
-          )
-         )
-        )
-        ;;@ assembly/index.ts:10:36
+        ;;@ assembly/index.ts:27:53
         (set_local $6
          (i32.add
-          ;;@ assembly/index.ts:10:38
+          ;;@ assembly/index.ts:27:55
           (get_local $6)
           (i32.const 1)
          )
         )
-        (br $continue|1)
+        (br $continue|2)
        )
       )
      )
-     ;;@ assembly/index.ts:8:35
-     (set_local $5
+     ;;@ assembly/index.ts:35:4
+     (i32.store16
+      ;;@ assembly/index.ts:35:15
+      (i32.shl
+       (i32.add
+        ;;@ assembly/index.ts:35:16
+        (i32.mul
+         (get_local $0)
+         ;;@ assembly/index.ts:35:20
+         (get_local $1)
+        )
+        ;;@ assembly/index.ts:35:28
+        (get_local $8)
+       )
+       ;;@ assembly/index.ts:35:34
+       (i32.const 1)
+      )
+      ;;@ assembly/index.ts:36:6
+      (if (result i32)
+       (f64.eq
+        (f64.sub
+         (tee_local $4
+          ;;@ assembly/index.ts:34:4
+          (tee_local $7
+           ;;@ assembly/index.ts:34:20
+           (f64.div
+            ;;@ assembly/index.ts:34:27
+            (call $~lib/math/JSMath.log
+             ;;@ assembly/index.ts:34:38
+             (call $~lib/math/JSMath.log
+              ;;@ assembly/index.ts:34:42
+              (f64.sqrt
+               ;;@ assembly/index.ts:34:47
+               (f64.add
+                (f64.mul
+                 (get_local $4)
+                 ;;@ assembly/index.ts:34:52
+                 (get_local $4)
+                )
+                ;;@ assembly/index.ts:34:57
+                (f64.mul
+                 (get_local $5)
+                 ;;@ assembly/index.ts:34:62
+                 (get_local $5)
+                )
+               )
+              )
+             )
+            )
+            ;;@ assembly/index.ts:34:70
+            (get_global $~lib/math/JSMath.LN2)
+           )
+          )
+         )
+         (get_local $4)
+        )
+        (f64.const 0)
+       )
+       ;;@ assembly/index.ts:37:10
+       (i32.trunc_u/f64
+        ;;@ assembly/index.ts:37:16
+        (f64.mul
+         (f64.const 2047)
+         (f64.min
+          (f64.max
+           (tee_local $7
+            ;;@ assembly/index.ts:37:41
+            (f64.div
+             (f64.sub
+              (f64.convert_u/i32
+               ;;@ assembly/index.ts:37:42
+               (i32.add
+                (get_local $6)
+                ;;@ assembly/index.ts:37:54
+                (i32.const 1)
+               )
+              )
+              ;;@ assembly/index.ts:37:58
+              (get_local $7)
+             )
+             (f64.convert_u/i32
+              ;;@ assembly/index.ts:37:66
+              (get_local $3)
+             )
+            )
+           )
+           (f64.const 0)
+          )
+          (f64.const 1)
+         )
+        )
+       )
+       ;;@ assembly/index.ts:38:10
+       (i32.div_s
+        (i32.mul
+         ;;@ assembly/index.ts:38:29
+         (get_local $6)
+         ;;@ assembly/index.ts:38:11
+         (i32.const 2047)
+        )
+        ;;@ assembly/index.ts:38:41
+        (get_local $3)
+       )
+      )
+     )
+     ;;@ assembly/index.ts:12:34
+     (set_local $8
       (i32.add
-       ;;@ assembly/index.ts:8:37
-       (get_local $5)
+       ;;@ assembly/index.ts:12:36
+       (get_local $8)
        (i32.const 1)
       )
      )
diff --git a/examples/mandelbrot/build/untouched.wat b/examples/mandelbrot/build/untouched.wat
index 5707bbcd..edc745e5 100644
--- a/examples/mandelbrot/build/untouched.wat
+++ b/examples/mandelbrot/build/untouched.wat
@@ -1,17 +1,51 @@
 (module
- (type $iiiv (func (param i32 i32 i32)))
+ (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $FF (func (param f64) (result f64)))
+ (type $Fi (func (param f64) (result i32)))
+ (type $FFFF (func (param f64 f64 f64) (result f64)))
  (import "JSMath" "log" (func $~lib/math/JSMath.log (param f64) (result f64)))
  (import "JSMath" "LN2" (global $~lib/math/JSMath.LN2 f64))
+ (import "env" "memory" (memory $0 1))
+ (global $assembly/index/NUM_COLORS i32 (i32.const 2048))
  (global $HEAP_BASE i32 (i32.const 4))
- (memory $0 1)
- (export "compute" (func $assembly/index/compute))
+ (export "computeLine" (func $assembly/index/computeLine))
  (export "memory" (memory $0))
- (func $assembly/index/compute (; 1 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
-  (local $3 f64)
+ (func $isFinite<f64> (; 1 ;) (type $Fi) (param $0 f64) (result i32)
+  ;;@ ~lib/builtins.ts:20:26
+  (return
+   ;;@ ~lib/builtins.ts:20:9
+   (f64.eq
+    (f64.sub
+     (get_local $0)
+     ;;@ ~lib/builtins.ts:20:17
+     (get_local $0)
+    )
+    ;;@ ~lib/builtins.ts:20:26
+    (f64.const 0)
+   )
+  )
+ )
+ (func $assembly/index/clamp<f64> (; 2 ;) (type $FFFF) (param $0 f64) (param $1 f64) (param $2 f64) (result f64)
+  ;;@ assembly/index.ts:46:43
+  (return
+   ;;@ assembly/index.ts:46:9
+   (f64.min
+    ;;@ assembly/index.ts:46:13
+    (f64.max
+     ;;@ assembly/index.ts:46:17
+     (get_local $0)
+     ;;@ assembly/index.ts:46:24
+     (get_local $1)
+    )
+    ;;@ assembly/index.ts:46:35
+    (get_local $2)
+   )
+  )
+ )
+ (func $assembly/index/computeLine (; 3 ;) (type $iiiiv) (param $0 i32) (param $1 i32) (param $2 i32) (param $3 i32)
   (local $4 f64)
   (local $5 f64)
-  (local $6 i32)
+  (local $6 f64)
   (local $7 f64)
   (local $8 i32)
   (local $9 f64)
@@ -22,447 +56,203 @@
   (local $14 i32)
   (local $15 f64)
   (local $16 i32)
-  (local $17 f64)
-  ;;@ assembly/index.ts:5:2
-  (set_local $3
-   ;;@ assembly/index.ts:5:19
-   (f64.div
-    (f64.convert_u/i32
-     (get_local $0)
-    )
-    ;;@ assembly/index.ts:5:27
-    (f64.const 1.6)
-   )
-  )
-  ;;@ assembly/index.ts:6:2
+  (local $17 i32)
+  ;;@ assembly/index.ts:8:2
   (set_local $4
-   ;;@ assembly/index.ts:6:19
+   ;;@ assembly/index.ts:8:19
    (f64.div
     (f64.convert_u/i32
      (get_local $1)
     )
-    ;;@ assembly/index.ts:6:28
+    ;;@ assembly/index.ts:8:27
+    (f64.const 1.6)
+   )
+  )
+  ;;@ assembly/index.ts:9:2
+  (set_local $5
+   ;;@ assembly/index.ts:9:19
+   (f64.div
+    (f64.convert_u/i32
+     (get_local $2)
+    )
+    ;;@ assembly/index.ts:9:28
     (f64.const 2)
    )
   )
-  ;;@ assembly/index.ts:7:2
-  (set_local $5
-   ;;@ assembly/index.ts:7:14
+  ;;@ assembly/index.ts:10:2
+  (set_local $6
+   ;;@ assembly/index.ts:10:14
    (f64.div
     (f64.const 10)
-    ;;@ assembly/index.ts:7:21
+    ;;@ assembly/index.ts:10:21
     (f64.min
-     ;;@ assembly/index.ts:7:25
+     ;;@ assembly/index.ts:10:25
      (f64.mul
       (f64.const 3)
       (f64.convert_u/i32
-       ;;@ assembly/index.ts:7:29
-       (get_local $0)
+       ;;@ assembly/index.ts:10:29
+       (get_local $1)
       )
      )
-     ;;@ assembly/index.ts:7:36
+     ;;@ assembly/index.ts:10:36
      (f64.mul
       (f64.const 4)
       (f64.convert_u/i32
-       ;;@ assembly/index.ts:7:40
-       (get_local $1)
+       ;;@ assembly/index.ts:10:40
+       (get_local $2)
       )
      )
     )
    )
   )
-  ;;@ assembly/index.ts:8:2
+  ;;@ assembly/index.ts:11:2
+  (set_local $7
+   ;;@ assembly/index.ts:11:18
+   (f64.mul
+    (f64.sub
+     (f64.convert_u/i32
+      ;;@ assembly/index.ts:11:19
+      (get_local $0)
+     )
+     ;;@ assembly/index.ts:11:23
+     (get_local $5)
+    )
+    ;;@ assembly/index.ts:11:37
+    (get_local $6)
+   )
+  )
+  ;;@ assembly/index.ts:12:2
   (block $break|0
-   ;;@ assembly/index.ts:8:7
-   (set_local $6
-    ;;@ assembly/index.ts:8:20
+   ;;@ assembly/index.ts:12:7
+   (set_local $8
+    ;;@ assembly/index.ts:12:20
     (i32.const 0)
    )
    (loop $continue|0
     (if
-     ;;@ assembly/index.ts:8:23
+     ;;@ assembly/index.ts:12:23
      (i32.lt_u
-      (get_local $6)
-      ;;@ assembly/index.ts:8:27
+      (get_local $8)
+      ;;@ assembly/index.ts:12:27
       (get_local $1)
      )
      (block
       (block
-       ;;@ assembly/index.ts:9:4
-       (set_local $7
-        ;;@ assembly/index.ts:9:20
+       ;;@ assembly/index.ts:13:4
+       (set_local $9
+        ;;@ assembly/index.ts:13:15
         (f64.mul
          (f64.sub
           (f64.convert_u/i32
-           ;;@ assembly/index.ts:9:21
-           (get_local $6)
+           ;;@ assembly/index.ts:13:16
+           (get_local $8)
           )
-          ;;@ assembly/index.ts:9:25
+          ;;@ assembly/index.ts:13:20
           (get_local $4)
          )
-         ;;@ assembly/index.ts:9:39
-         (get_local $5)
+         ;;@ assembly/index.ts:13:34
+         (get_local $6)
         )
        )
-       ;;@ assembly/index.ts:10:4
-       (block $break|1
-        ;;@ assembly/index.ts:10:9
-        (set_local $8
-         ;;@ assembly/index.ts:10:22
-         (i32.const 0)
+       ;;@ assembly/index.ts:16:4
+       (block
+        (set_local $10
+         ;;@ assembly/index.ts:16:13
+         (f64.const 0)
         )
+        (set_local $11
+         ;;@ assembly/index.ts:16:23
+         (f64.const 0)
+        )
+       )
+       ;;@ assembly/index.ts:17:4
+       (set_local $14
+        ;;@ assembly/index.ts:17:25
+        (i32.const 0)
+       )
+       ;;@ assembly/index.ts:18:4
+       (block $break|1
         (loop $continue|1
          (if
-          ;;@ assembly/index.ts:10:25
-          (i32.lt_u
-           (get_local $8)
-           ;;@ assembly/index.ts:10:29
-           (get_local $0)
-          )
-          (block
-           (block
-            ;;@ assembly/index.ts:11:6
-            (set_local $9
-             ;;@ assembly/index.ts:11:17
+          ;;@ assembly/index.ts:18:11
+          (f64.le
+           (f64.add
+            (tee_local $12
+             ;;@ assembly/index.ts:18:19
              (f64.mul
-              (f64.sub
-               (f64.convert_u/i32
-                ;;@ assembly/index.ts:11:18
-                (get_local $8)
-               )
-               ;;@ assembly/index.ts:11:22
-               (get_local $3)
-              )
-              ;;@ assembly/index.ts:11:36
-              (get_local $5)
+              (get_local $10)
+              ;;@ assembly/index.ts:18:24
+              (get_local $10)
              )
             )
-            ;;@ assembly/index.ts:14:6
-            (block
-             (set_local $10
-              ;;@ assembly/index.ts:14:15
-              (f64.const 0)
-             )
-             (set_local $11
-              ;;@ assembly/index.ts:14:25
-              (f64.const 0)
-             )
-            )
-            ;;@ assembly/index.ts:15:6
-            (set_local $14
-             ;;@ assembly/index.ts:15:27
-             (i32.const 0)
-            )
-            ;;@ assembly/index.ts:16:6
-            (block $break|2
-             (loop $continue|2
-              (if
-               ;;@ assembly/index.ts:16:13
-               (f64.le
-                (f64.add
-                 (tee_local $12
-                  ;;@ assembly/index.ts:16:21
-                  (f64.mul
-                   (get_local $10)
-                   ;;@ assembly/index.ts:16:26
-                   (get_local $10)
-                  )
-                 )
-                 ;;@ assembly/index.ts:16:32
-                 (tee_local $13
-                  ;;@ assembly/index.ts:16:40
-                  (f64.mul
-                   (get_local $11)
-                   ;;@ assembly/index.ts:16:45
-                   (get_local $11)
-                  )
-                 )
-                )
-                ;;@ assembly/index.ts:16:52
-                (f64.const 4)
-               )
-               (block
-                (block
-                 ;;@ assembly/index.ts:17:8
-                 (set_local $15
-                  ;;@ assembly/index.ts:17:16
-                  (f64.add
-                   (f64.sub
-                    (get_local $12)
-                    ;;@ assembly/index.ts:17:23
-                    (get_local $13)
-                   )
-                   ;;@ assembly/index.ts:17:30
-                   (get_local $9)
-                  )
-                 )
-                 ;;@ assembly/index.ts:18:8
-                 (set_local $11
-                  ;;@ assembly/index.ts:18:13
-                  (f64.add
-                   (f64.mul
-                    (f64.mul
-                     (f64.const 2)
-                     ;;@ assembly/index.ts:18:19
-                     (get_local $10)
-                    )
-                    ;;@ assembly/index.ts:18:24
-                    (get_local $11)
-                   )
-                   ;;@ assembly/index.ts:18:29
-                   (get_local $7)
-                  )
-                 )
-                 ;;@ assembly/index.ts:19:8
-                 (set_local $10
-                  ;;@ assembly/index.ts:19:13
-                  (get_local $15)
-                 )
-                 ;;@ assembly/index.ts:20:8
-                 (if
-                  ;;@ assembly/index.ts:20:12
-                  (i32.ge_u
-                   (get_local $14)
-                   ;;@ assembly/index.ts:20:25
-                   (get_local $2)
-                  )
-                  ;;@ assembly/index.ts:20:32
-                  (br $break|2)
-                 )
-                 ;;@ assembly/index.ts:21:8
-                 (set_local $14
-                  (i32.add
-                   ;;@ assembly/index.ts:21:10
-                   (get_local $14)
-                   (i32.const 1)
-                  )
-                 )
-                )
-                (br $continue|2)
-               )
-              )
-             )
-            )
-            ;;@ assembly/index.ts:25:6
-            (block $break|3
-             ;;@ assembly/index.ts:25:11
-             (set_local $16
-              ;;@ assembly/index.ts:25:19
-              (i32.const 0)
-             )
-             (loop $continue|3
-              (if
-               ;;@ assembly/index.ts:25:22
-               (i32.lt_s
-                (get_local $16)
-                ;;@ assembly/index.ts:25:26
-                (i32.const 4)
-               )
-               (block
-                (block
-                 ;;@ assembly/index.ts:26:8
-                 (set_local $15
-                  ;;@ assembly/index.ts:26:16
-                  (f64.add
-                   (f64.sub
-                    (tee_local $12
-                     ;;@ assembly/index.ts:26:24
-                     (f64.mul
-                      (get_local $10)
-                      ;;@ assembly/index.ts:26:29
-                      (get_local $10)
-                     )
-                    )
-                    ;;@ assembly/index.ts:26:35
-                    (tee_local $13
-                     ;;@ assembly/index.ts:26:43
-                     (f64.mul
-                      (get_local $11)
-                      ;;@ assembly/index.ts:26:48
-                      (get_local $11)
-                     )
-                    )
-                   )
-                   ;;@ assembly/index.ts:26:54
-                   (get_local $9)
-                  )
-                 )
-                 ;;@ assembly/index.ts:27:8
-                 (set_local $11
-                  ;;@ assembly/index.ts:27:13
-                  (f64.add
-                   (f64.mul
-                    (f64.mul
-                     (f64.const 2)
-                     ;;@ assembly/index.ts:27:19
-                     (get_local $10)
-                    )
-                    ;;@ assembly/index.ts:27:24
-                    (get_local $11)
-                   )
-                   ;;@ assembly/index.ts:27:29
-                   (get_local $7)
-                  )
-                 )
-                 ;;@ assembly/index.ts:28:8
-                 (set_local $10
-                  ;;@ assembly/index.ts:28:13
-                  (get_local $15)
-                 )
-                )
-                ;;@ assembly/index.ts:25:29
-                (set_local $16
-                 (i32.add
-                  ;;@ assembly/index.ts:25:31
-                  (get_local $16)
-                  (i32.const 1)
-                 )
-                )
-                (br $continue|3)
-               )
-              )
-             )
-            )
-            ;;@ assembly/index.ts:32:6
-            (set_local $15
-             ;;@ assembly/index.ts:32:22
-             (f64.div
-              ;;@ assembly/index.ts:32:29
-              (call $~lib/math/JSMath.log
-               ;;@ assembly/index.ts:32:40
-               (call $~lib/math/JSMath.log
-                ;;@ assembly/index.ts:32:44
-                (f64.sqrt
-                 ;;@ assembly/index.ts:32:49
-                 (f64.add
-                  (f64.mul
-                   (get_local $10)
-                   ;;@ assembly/index.ts:32:54
-                   (get_local $10)
-                  )
-                  ;;@ assembly/index.ts:32:59
-                  (f64.mul
-                   (get_local $11)
-                   ;;@ assembly/index.ts:32:64
-                   (get_local $11)
-                  )
-                 )
-                )
-               )
-              )
-              ;;@ assembly/index.ts:32:72
-              (get_global $~lib/math/JSMath.LN2)
-             )
-            )
-            ;;@ assembly/index.ts:33:6
-            (if
-             ;;@ assembly/index.ts:33:10
-             (f64.gt
-              (get_local $15)
-              ;;@ assembly/index.ts:33:17
-              (f64.const 0)
-             )
-             ;;@ assembly/index.ts:33:20
-             (block
-              ;;@ assembly/index.ts:34:8
-              (set_local $17
-               ;;@ assembly/index.ts:34:24
-               (f64.max
-                ;;@ assembly/index.ts:34:33
-                (f64.min
-                 ;;@ assembly/index.ts:34:42
-                 (f64.div
-                  (f64.sub
-                   ;;@ assembly/index.ts:34:43
-                   (f64.convert_u/i32
-                    ;;@ assembly/index.ts:34:49
-                    (i32.add
-                     (get_local $14)
-                     ;;@ assembly/index.ts:34:61
-                     (i32.const 1)
-                    )
-                   )
-                   ;;@ assembly/index.ts:34:66
-                   (get_local $15)
-                  )
-                  (f64.convert_u/i32
-                   ;;@ assembly/index.ts:34:74
-                   (get_local $2)
-                  )
-                 )
-                 ;;@ assembly/index.ts:34:81
-                 (f64.const 1)
-                )
-                ;;@ assembly/index.ts:34:87
-                (f64.const 0)
-               )
-              )
-              ;;@ assembly/index.ts:35:8
-              (i32.store16
-               ;;@ assembly/index.ts:35:19
-               (i32.shl
-                (i32.add
-                 ;;@ assembly/index.ts:35:20
-                 (i32.mul
-                  (get_local $6)
-                  ;;@ assembly/index.ts:35:24
-                  (get_local $0)
-                 )
-                 ;;@ assembly/index.ts:35:32
-                 (get_local $8)
-                )
-                ;;@ assembly/index.ts:35:38
-                (i32.const 1)
-               )
-               ;;@ assembly/index.ts:35:41
-               (i32.trunc_u/f64
-                ;;@ assembly/index.ts:35:47
-                (f64.mul
-                 (f64.convert_u/i32
-                  (i32.const 2047)
-                 )
-                 ;;@ assembly/index.ts:35:54
-                 (get_local $17)
-                )
-               )
-              )
-             )
-             ;;@ assembly/index.ts:37:8
-             (i32.store16
-              ;;@ assembly/index.ts:37:19
-              (i32.shl
-               (i32.add
-                ;;@ assembly/index.ts:37:20
-                (i32.mul
-                 (get_local $6)
-                 ;;@ assembly/index.ts:37:24
-                 (get_local $0)
-                )
-                ;;@ assembly/index.ts:37:32
-                (get_local $8)
-               )
-               ;;@ assembly/index.ts:37:38
-               (i32.const 1)
-              )
-              ;;@ assembly/index.ts:37:41
-              (i32.div_u
-               (i32.mul
-                (get_local $14)
-                ;;@ assembly/index.ts:37:53
-                (i32.const 2047)
-               )
-               ;;@ assembly/index.ts:37:60
-               (get_local $2)
-              )
+            ;;@ assembly/index.ts:18:30
+            (tee_local $13
+             ;;@ assembly/index.ts:18:38
+             (f64.mul
+              (get_local $11)
+              ;;@ assembly/index.ts:18:43
+              (get_local $11)
              )
             )
            )
-           ;;@ assembly/index.ts:10:36
-           (set_local $8
-            (i32.add
-             ;;@ assembly/index.ts:10:38
-             (get_local $8)
-             (i32.const 1)
+           ;;@ assembly/index.ts:18:50
+           (f64.const 4)
+          )
+          (block
+           (block
+            ;;@ assembly/index.ts:19:6
+            (set_local $15
+             ;;@ assembly/index.ts:19:19
+             (f64.add
+              (f64.sub
+               (get_local $12)
+               ;;@ assembly/index.ts:19:26
+               (get_local $13)
+              )
+              ;;@ assembly/index.ts:19:33
+              (get_local $9)
+             )
+            )
+            ;;@ assembly/index.ts:20:6
+            (set_local $11
+             ;;@ assembly/index.ts:20:11
+             (f64.add
+              (f64.mul
+               (f64.mul
+                (f64.const 2)
+                ;;@ assembly/index.ts:20:17
+                (get_local $10)
+               )
+               ;;@ assembly/index.ts:20:22
+               (get_local $11)
+              )
+              ;;@ assembly/index.ts:20:27
+              (get_local $7)
+             )
+            )
+            ;;@ assembly/index.ts:21:6
+            (set_local $10
+             ;;@ assembly/index.ts:21:11
+             (get_local $15)
+            )
+            ;;@ assembly/index.ts:22:6
+            (if
+             ;;@ assembly/index.ts:22:10
+             (i32.ge_u
+              (get_local $14)
+              ;;@ assembly/index.ts:22:23
+              (get_local $3)
+             )
+             ;;@ assembly/index.ts:22:30
+             (br $break|1)
+            )
+            ;;@ assembly/index.ts:23:6
+            (set_local $14
+             (i32.add
+              ;;@ assembly/index.ts:23:8
+              (get_local $14)
+              (i32.const 1)
+             )
             )
            )
            (br $continue|1)
@@ -470,12 +260,221 @@
          )
         )
        )
+       ;;@ assembly/index.ts:27:4
+       (block $break|2
+        ;;@ assembly/index.ts:27:9
+        (set_local $16
+         ;;@ assembly/index.ts:27:17
+         (i32.const 0)
+        )
+        (loop $continue|2
+         (if
+          ;;@ assembly/index.ts:27:20
+          (i32.and
+           (if (result i32)
+            (tee_local $17
+             (i32.lt_s
+              (get_local $16)
+              ;;@ assembly/index.ts:27:24
+              (i32.const 5)
+             )
+            )
+            ;;@ assembly/index.ts:27:29
+            (i32.lt_u
+             (get_local $14)
+             ;;@ assembly/index.ts:27:41
+             (get_local $3)
+            )
+            (get_local $17)
+           )
+           (i32.const 1)
+          )
+          (block
+           (block
+            ;;@ assembly/index.ts:28:6
+            (set_local $15
+             ;;@ assembly/index.ts:28:19
+             (f64.add
+              (f64.sub
+               (f64.mul
+                (get_local $10)
+                ;;@ assembly/index.ts:28:24
+                (get_local $10)
+               )
+               ;;@ assembly/index.ts:28:29
+               (f64.mul
+                (get_local $11)
+                ;;@ assembly/index.ts:28:34
+                (get_local $11)
+               )
+              )
+              ;;@ assembly/index.ts:28:39
+              (get_local $9)
+             )
+            )
+            ;;@ assembly/index.ts:29:6
+            (set_local $11
+             ;;@ assembly/index.ts:29:11
+             (f64.add
+              (f64.mul
+               (f64.mul
+                (f64.const 2)
+                ;;@ assembly/index.ts:29:17
+                (get_local $10)
+               )
+               ;;@ assembly/index.ts:29:22
+               (get_local $11)
+              )
+              ;;@ assembly/index.ts:29:27
+              (get_local $7)
+             )
+            )
+            ;;@ assembly/index.ts:30:6
+            (set_local $10
+             ;;@ assembly/index.ts:30:11
+             (get_local $15)
+            )
+           )
+           ;;@ assembly/index.ts:27:48
+           (block
+            (set_local $16
+             (i32.add
+              ;;@ assembly/index.ts:27:50
+              (get_local $16)
+              (i32.const 1)
+             )
+            )
+            ;;@ assembly/index.ts:27:53
+            (set_local $14
+             (i32.add
+              ;;@ assembly/index.ts:27:55
+              (get_local $14)
+              (i32.const 1)
+             )
+            )
+           )
+           (br $continue|2)
+          )
+         )
+        )
+       )
+       ;;@ assembly/index.ts:34:4
+       (set_local $15
+        ;;@ assembly/index.ts:34:20
+        (f64.div
+         ;;@ assembly/index.ts:34:27
+         (call $~lib/math/JSMath.log
+          ;;@ assembly/index.ts:34:38
+          (call $~lib/math/JSMath.log
+           ;;@ assembly/index.ts:34:42
+           (f64.sqrt
+            ;;@ assembly/index.ts:34:47
+            (f64.add
+             (f64.mul
+              (get_local $10)
+              ;;@ assembly/index.ts:34:52
+              (get_local $10)
+             )
+             ;;@ assembly/index.ts:34:57
+             (f64.mul
+              (get_local $11)
+              ;;@ assembly/index.ts:34:62
+              (get_local $11)
+             )
+            )
+           )
+          )
+         )
+         ;;@ assembly/index.ts:34:70
+         (get_global $~lib/math/JSMath.LN2)
+        )
+       )
+       ;;@ assembly/index.ts:35:4
+       (i32.store16
+        ;;@ assembly/index.ts:35:15
+        (i32.shl
+         (i32.add
+          ;;@ assembly/index.ts:35:16
+          (i32.mul
+           (get_local $0)
+           ;;@ assembly/index.ts:35:20
+           (get_local $1)
+          )
+          ;;@ assembly/index.ts:35:28
+          (get_local $8)
+         )
+         ;;@ assembly/index.ts:35:34
+         (i32.const 1)
+        )
+        ;;@ assembly/index.ts:36:6
+        (if (result i32)
+         (call $isFinite<f64>
+          ;;@ assembly/index.ts:36:15
+          (get_local $15)
+         )
+         ;;@ assembly/index.ts:37:10
+         (i32.trunc_u/f64
+          ;;@ assembly/index.ts:37:16
+          (f64.mul
+           (f64.convert_s/i32
+            (i32.sub
+             ;;@ assembly/index.ts:37:17
+             (i32.const 2048)
+             ;;@ assembly/index.ts:37:30
+             (i32.const 1)
+            )
+           )
+           ;;@ assembly/index.ts:37:35
+           (call $assembly/index/clamp<f64>
+            ;;@ assembly/index.ts:37:41
+            (f64.div
+             (f64.sub
+              (f64.convert_u/i32
+               ;;@ assembly/index.ts:37:42
+               (i32.add
+                (get_local $14)
+                ;;@ assembly/index.ts:37:54
+                (i32.const 1)
+               )
+              )
+              ;;@ assembly/index.ts:37:58
+              (get_local $15)
+             )
+             (f64.convert_u/i32
+              ;;@ assembly/index.ts:37:66
+              (get_local $3)
+             )
+            )
+            ;;@ assembly/index.ts:37:73
+            (f64.const 0)
+            ;;@ assembly/index.ts:37:78
+            (f64.const 1)
+           )
+          )
+         )
+         ;;@ assembly/index.ts:38:10
+         (i32.div_s
+          (i32.mul
+           (i32.sub
+            ;;@ assembly/index.ts:38:11
+            (i32.const 2048)
+            ;;@ assembly/index.ts:38:24
+            (i32.const 1)
+           )
+           ;;@ assembly/index.ts:38:29
+           (get_local $14)
+          )
+          ;;@ assembly/index.ts:38:41
+          (get_local $3)
+         )
+        )
+       )
       )
-      ;;@ assembly/index.ts:8:35
-      (set_local $6
+      ;;@ assembly/index.ts:12:34
+      (set_local $8
        (i32.add
-        ;;@ assembly/index.ts:8:37
-        (get_local $6)
+        ;;@ assembly/index.ts:12:36
+        (get_local $8)
         (i32.const 1)
        )
       )
diff --git a/examples/mandelbrot/index.html b/examples/mandelbrot/index.html
index 796cf9c8..b9461d96 100644
--- a/examples/mandelbrot/index.html
+++ b/examples/mandelbrot/index.html
@@ -1,60 +1,99 @@
 <!DOCTYPE html>
 <html>
 <head>
-<title>Mandelbrot Set - AssemblyScript</title>
+<title>Mandelbrot set - AssemblyScript</title>
 <style>
 html, body { height: 100%; margin: 0; overflow: hidden; color: #111; background: #fff; font-family: sans-serif; }
 h1 { padding: 20px; font-size: 12pt; margin: 0; }
 a { color: #111; text-decoration: none; }
 a:hover { color: #0074C1; text-decoration: underline; }
 canvas { position: absolute; top: 60px; left: 20px; width: calc(100% - 40px); height: calc(100% - 80px); background: #eee; }
+canvas.gradient { left: 0; top: 0px; height: 2px; width: 100%; }
 </style>
 </head>
 <body>
 <h1>
-  <a href="https://en.wikipedia.org/wiki/Mandelbrot_set">Mandelbrot Set</a> in
+  <a href="https://en.wikipedia.org/wiki/Mandelbrot_set">Mandelbrot set</a> in
   <a href="http://assemblyscript.org">AssemblyScript</a>
   ( <a href="https://github.com/AssemblyScript/assemblyscript/blob/master/examples/mandelbrot/assembly/index.ts">source</a> )
 </h1>
 <canvas></canvas>
 <script>"use strict";
 
-// Set up a 2D rendering context
+// Set this to false if you prefer a plain image instead.
+var animate = true;
+
+// Set up the canvas with a 2D rendering context
 var cnv = document.getElementsByTagName("canvas")[0];
 var ctx = cnv.getContext("2d");
 var bcr = cnv.getBoundingClientRect();
-cnv.width = bcr.width | 0;
-cnv.height = bcr.height | 0;
+
+// Compute the size of the viewport
+var width = bcr.width | 0;
+var height = bcr.height | 0;
+var size = width * height;
+var byteSize = size << 1; // discrete color indices in range [0, 2047] (here: 2b per pixel)
+
+cnv.width = width;
+cnv.height = height;
+
+// Compute the size of and instantiate the module's memory
+var memory = new WebAssembly.Memory({ initial: ((byteSize + 0xffff) & ~0xffff) >>> 16 });
+var mem = new Uint16Array(memory.buffer);
+var imageData = ctx.createImageData(width, height);
+var argb = new Uint32Array(imageData.data.buffer);
 
 // Fetch and instantiate the module
 fetch("build/optimized.wasm")
 .then(response => response.arrayBuffer())
-.then(buffer => WebAssembly.instantiate(buffer, { JSMath: Math }))
+.then(buffer => WebAssembly.instantiate(buffer, {
+  env: { memory: memory },
+  JSMath: Math
+}))
 .then(module => {
   var exports = module.instance.exports;
-  var memory = exports.memory;
+  var computeLine = exports.computeLine;
+  var updateLine = function(y) {
+    var yx = y * width;
+    for (let x = 0; x < width; ++x) argb[yx + x] = colors[mem[yx + x]];
+  };
 
-  // Determine required memory size and grow if necessary
-  var width = cnv.width | 0;
-  var height = cnv.height | 0;
-  var byteSize = 2 * width * height; // 2b per pixel (0..2041)
-  if (memory.buffer.byteLength < byteSize) {
-    let pages = ((byteSize - memory.buffer.byteLength + 0xffff) & ~0xffff) >>> 16;
-    memory.grow(pages);
-  }
-
-  // Compute and render to the canvas
-  exports.compute(width, height, 40);
-  var mem = new Uint16Array(memory.buffer);
-  var imageData = ctx.createImageData(width, height);
-  var argb = new Uint32Array(imageData.data.buffer);
+  // Compute an initial balanced version of the set.
+  const limit = 40;
   for (let y = 0; y < height; ++y) {
-    let yx = y * width;
-    for (let x = 0; x < width; ++x) {
-      argb[yx + x] = colors[mem[yx + x]];
-    }
+    computeLine(y, width, height, limit);
+    updateLine(y);
+  }
+
+  // Keep rendering the image buffer.
+  (function render() {
+    if (animate) requestAnimationFrame(render);
+    ctx.putImageData(imageData, 0, 0);
+  })();
+
+  if (animate) {
+
+    // Let it glow a bit by occasionally shifting the limit...
+    var currentLimit = limit;
+    var shiftRange = 10;
+    (function updateShift() {
+      currentLimit = limit + (2 * Math.random() * shiftRange - shiftRange) | 0
+      setTimeout(updateShift, 1000 + (1500 * Math.random()) | 0);
+    })();
+
+    // ...while continously recomputing a subset of it.
+    var flickerRange = 3;
+    (function updateFlicker() {
+      for (let i = 0, k = (0.05 * height) | 0; i < k; ++i) {
+        let ry = (Math.random() * height) | 0;
+        let rl = (2 * Math.random() * flickerRange - flickerRange) | 0;
+        computeLine(ry, width, height, currentLimit + rl);
+        updateLine(ry);
+      }
+      setTimeout(updateFlicker, 1000 / 30);
+    })();
+
   }
-  ctx.putImageData(imageData, 0, 0);
 }).catch(err => {
   alert("Failed to load WASM: " + err.message + " (ad blocker, maybe?)");
   console.log(err.stack);
@@ -67,13 +106,15 @@ var colors = (() => {
   cnv.height = 1;
   var ctx = cnv.getContext("2d");
   var grd = ctx.createLinearGradient(0, 0, 2048, 0);
-  grd.addColorStop(0, "#000764");
-  grd.addColorStop(0.25, "#2068CB");
-  grd.addColorStop(0.50, "#EDFFFF");
-  grd.addColorStop(0.65, "#FFAA00");
-  grd.addColorStop(0.85, "#000200");
+  grd.addColorStop(0.00, "#000764");
+  grd.addColorStop(0.16, "#2068CB");
+  grd.addColorStop(0.42, "#EDFFFF");
+  grd.addColorStop(0.6425, "#FFAA00");
+  grd.addColorStop(0.8575, "#000200");
   ctx.fillStyle = grd;
   ctx.fillRect(0, 0, 2048, 1);
+  cnv.className = "gradient";
+  setTimeout(() => document.body.appendChild(cnv));
   return new Uint32Array(ctx.getImageData(0, 0, 2048, 1).data.buffer);
 })();
 </script>
diff --git a/examples/mandelbrot/package.json b/examples/mandelbrot/package.json
index b345c2f4..c5dd7007 100644
--- a/examples/mandelbrot/package.json
+++ b/examples/mandelbrot/package.json
@@ -3,8 +3,8 @@
   "version": "1.0.0",
   "private": true,
   "scripts": {
-    "asbuild:untouched": "asc assembly/index.ts -b build/untouched.wasm -t build/untouched.wat --sourceMap --validate --measure",
-    "asbuild:optimized": "asc assembly/index.ts -b build/optimized.wasm -t build/optimized.wat -O3 --sourceMap --validate --noDebug --measure",
+    "asbuild:untouched": "asc assembly/index.ts -b build/untouched.wasm -t build/untouched.wat --importMemory --sourceMap --validate --measure",
+    "asbuild:optimized": "asc assembly/index.ts -b build/optimized.wasm -t build/optimized.wat -O3 --importMemory --sourceMap --validate --noDebug --measure",
     "asbuild": "npm run asbuild:untouched && npm run asbuild:optimized",
     "server": "http-server . -o -c-1"
   },
diff --git a/tests/compiler/mandelbrot.optimized.wat b/tests/compiler/mandelbrot.optimized.wat
index 7e330679..634c1224 100644
--- a/tests/compiler/mandelbrot.optimized.wat
+++ b/tests/compiler/mandelbrot.optimized.wat
@@ -1,55 +1,80 @@
 (module
- (type $iiiv (func (param i32 i32 i32)))
+ (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $FF (func (param f64) (result f64)))
+ (type $Fi (func (param f64) (result i32)))
+ (type $FFFF (func (param f64 f64 f64) (result f64)))
  (import "JSMath" "log" (func $~lib/math/JSMath.log (param f64) (result f64)))
  (import "JSMath" "LN2" (global $~lib/math/JSMath.LN2 f64))
  (memory $0 1)
- (export "compute" (func $../../examples/mandelbrot/assembly/index/compute))
+ (export "computeLine" (func $../../examples/mandelbrot/assembly/index/computeLine))
  (export "memory" (memory $0))
- (func $../../examples/mandelbrot/assembly/index/compute (; 1 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
-  (local $3 f64)
+ (func $isFinite<f64> (; 1 ;) (type $Fi) (param $0 f64) (result i32)
+  (f64.eq
+   (f64.sub
+    (get_local $0)
+    (get_local $0)
+   )
+   (f64.const 0)
+  )
+ )
+ (func $../../examples/mandelbrot/assembly/index/clamp<f64> (; 2 ;) (type $FFFF) (param $0 f64) (param $1 f64) (param $2 f64) (result f64)
+  (f64.min
+   (f64.max
+    (get_local $0)
+    (get_local $1)
+   )
+   (get_local $2)
+  )
+ )
+ (func $../../examples/mandelbrot/assembly/index/computeLine (; 3 ;) (type $iiiiv) (param $0 i32) (param $1 i32) (param $2 i32) (param $3 i32)
   (local $4 f64)
-  (local $5 i32)
+  (local $5 f64)
   (local $6 i32)
-  (local $7 i32)
-  (local $8 f64)
+  (local $7 f64)
+  (local $8 i32)
   (local $9 i32)
   (local $10 f64)
   (local $11 f64)
   (local $12 f64)
   (local $13 f64)
   (local $14 f64)
-  (local $15 f64)
-  (set_local $13
-   (f64.div
-    (f64.convert_u/i32
-     (get_local $0)
-    )
-    (f64.const 1.6)
-   )
-  )
-  (set_local $14
+  (set_local $12
    (f64.div
     (f64.convert_u/i32
      (get_local $1)
     )
-    (f64.const 2)
+    (f64.const 1.6)
    )
   )
   (set_local $10
-   (f64.div
-    (f64.const 10)
-    (f64.min
-     (f64.mul
-      (f64.const 3)
-      (f64.convert_u/i32
-       (get_local $0)
-      )
+   (f64.mul
+    (f64.sub
+     (f64.convert_u/i32
+      (get_local $0)
      )
-     (f64.mul
-      (f64.const 4)
+     (f64.div
       (f64.convert_u/i32
-       (get_local $1)
+       (get_local $2)
+      )
+      (f64.const 2)
+     )
+    )
+    (tee_local $13
+     (f64.div
+      (f64.const 10)
+      (f64.min
+       (f64.mul
+        (f64.const 3)
+        (f64.convert_u/i32
+         (get_local $1)
+        )
+       )
+       (f64.mul
+        (f64.const 4)
+        (f64.convert_u/i32
+         (get_local $2)
+        )
+       )
       )
      )
     )
@@ -58,7 +83,7 @@
   (loop $continue|0
    (if
     (i32.lt_u
-     (get_local $5)
+     (get_local $8)
      (get_local $1)
     )
     (block
@@ -66,232 +91,137 @@
       (f64.mul
        (f64.sub
         (f64.convert_u/i32
-         (get_local $5)
+         (get_local $8)
         )
-        (get_local $14)
+        (get_local $12)
        )
-       (get_local $10)
+       (get_local $13)
       )
      )
+     (set_local $4
+      (f64.const 0)
+     )
+     (set_local $5
+      (f64.const 0)
+     )
      (set_local $6
       (i32.const 0)
      )
-     (loop $continue|1
+     (block $break|1
+      (loop $continue|1
+       (if
+        (f64.le
+         (f64.add
+          (tee_local $14
+           (f64.mul
+            (get_local $4)
+            (get_local $4)
+           )
+          )
+          (tee_local $7
+           (f64.mul
+            (get_local $5)
+            (get_local $5)
+           )
+          )
+         )
+         (f64.const 4)
+        )
+        (block
+         (set_local $5
+          (f64.add
+           (f64.mul
+            (f64.mul
+             (f64.const 2)
+             (get_local $4)
+            )
+            (get_local $5)
+           )
+           (get_local $10)
+          )
+         )
+         (set_local $4
+          (f64.add
+           (f64.sub
+            (get_local $14)
+            (get_local $7)
+           )
+           (get_local $11)
+          )
+         )
+         (br_if $break|1
+          (i32.ge_u
+           (get_local $6)
+           (get_local $3)
+          )
+         )
+         (set_local $6
+          (i32.add
+           (get_local $6)
+           (i32.const 1)
+          )
+         )
+         (br $continue|1)
+        )
+       )
+      )
+     )
+     (set_local $9
+      (i32.const 0)
+     )
+     (loop $continue|2
       (if
-       (i32.lt_u
-        (get_local $6)
-        (get_local $0)
+       (i32.and
+        (if (result i32)
+         (tee_local $2
+          (i32.lt_s
+           (get_local $9)
+           (i32.const 5)
+          )
+         )
+         (i32.lt_u
+          (get_local $6)
+          (get_local $3)
+         )
+         (get_local $2)
+        )
+        (i32.const 1)
        )
        (block
-        (set_local $12
-         (f64.mul
+        (set_local $7
+         (f64.add
           (f64.sub
-           (f64.convert_u/i32
-            (get_local $6)
+           (f64.mul
+            (get_local $4)
+            (get_local $4)
            )
-           (get_local $13)
+           (f64.mul
+            (get_local $5)
+            (get_local $5)
+           )
+          )
+          (get_local $11)
+         )
+        )
+        (set_local $5
+         (f64.add
+          (f64.mul
+           (f64.mul
+            (f64.const 2)
+            (get_local $4)
+           )
+           (get_local $5)
           )
           (get_local $10)
          )
         )
-        (set_local $3
-         (f64.const 0)
-        )
         (set_local $4
-         (f64.const 0)
-        )
-        (set_local $7
-         (i32.const 0)
-        )
-        (block $break|2
-         (loop $continue|2
-          (if
-           (f64.le
-            (f64.add
-             (tee_local $15
-              (f64.mul
-               (get_local $3)
-               (get_local $3)
-              )
-             )
-             (tee_local $8
-              (f64.mul
-               (get_local $4)
-               (get_local $4)
-              )
-             )
-            )
-            (f64.const 4)
-           )
-           (block
-            (set_local $4
-             (f64.add
-              (f64.mul
-               (f64.mul
-                (f64.const 2)
-                (get_local $3)
-               )
-               (get_local $4)
-              )
-              (get_local $11)
-             )
-            )
-            (set_local $3
-             (f64.add
-              (f64.sub
-               (get_local $15)
-               (get_local $8)
-              )
-              (get_local $12)
-             )
-            )
-            (br_if $break|2
-             (i32.ge_u
-              (get_local $7)
-              (get_local $2)
-             )
-            )
-            (set_local $7
-             (i32.add
-              (get_local $7)
-              (i32.const 1)
-             )
-            )
-            (br $continue|2)
-           )
-          )
-         )
+         (get_local $7)
         )
         (set_local $9
-         (i32.const 0)
-        )
-        (loop $continue|3
-         (if
-          (i32.lt_s
-           (get_local $9)
-           (i32.const 4)
-          )
-          (block
-           (set_local $8
-            (f64.add
-             (f64.sub
-              (f64.mul
-               (get_local $3)
-               (get_local $3)
-              )
-              (f64.mul
-               (get_local $4)
-               (get_local $4)
-              )
-             )
-             (get_local $12)
-            )
-           )
-           (set_local $4
-            (f64.add
-             (f64.mul
-              (f64.mul
-               (f64.const 2)
-               (get_local $3)
-              )
-              (get_local $4)
-             )
-             (get_local $11)
-            )
-           )
-           (set_local $3
-            (get_local $8)
-           )
-           (set_local $9
-            (i32.add
-             (get_local $9)
-             (i32.const 1)
-            )
-           )
-           (br $continue|3)
-          )
-         )
-        )
-        (if
-         (f64.gt
-          (tee_local $8
-           (f64.div
-            (call $~lib/math/JSMath.log
-             (call $~lib/math/JSMath.log
-              (f64.sqrt
-               (f64.add
-                (f64.mul
-                 (get_local $3)
-                 (get_local $3)
-                )
-                (f64.mul
-                 (get_local $4)
-                 (get_local $4)
-                )
-               )
-              )
-             )
-            )
-            (get_global $~lib/math/JSMath.LN2)
-           )
-          )
-          (f64.const 0)
-         )
-         (i32.store16
-          (i32.shl
-           (i32.add
-            (i32.mul
-             (get_local $5)
-             (get_local $0)
-            )
-            (get_local $6)
-           )
-           (i32.const 1)
-          )
-          (i32.trunc_u/f64
-           (f64.mul
-            (f64.const 2047)
-            (f64.max
-             (f64.min
-              (f64.div
-               (f64.sub
-                (f64.convert_u/i32
-                 (i32.add
-                  (get_local $7)
-                  (i32.const 1)
-                 )
-                )
-                (get_local $8)
-               )
-               (f64.convert_u/i32
-                (get_local $2)
-               )
-              )
-              (f64.const 1)
-             )
-             (f64.const 0)
-            )
-           )
-          )
-         )
-         (i32.store16
-          (i32.shl
-           (i32.add
-            (i32.mul
-             (get_local $5)
-             (get_local $0)
-            )
-            (get_local $6)
-           )
-           (i32.const 1)
-          )
-          (i32.div_u
-           (i32.mul
-            (get_local $7)
-            (i32.const 2047)
-           )
-           (get_local $2)
-          )
+         (i32.add
+          (get_local $9)
+          (i32.const 1)
          )
         )
         (set_local $6
@@ -300,13 +230,81 @@
           (i32.const 1)
          )
         )
-        (br $continue|1)
+        (br $continue|2)
        )
       )
      )
-     (set_local $5
+     (set_local $7
+      (f64.div
+       (call $~lib/math/JSMath.log
+        (call $~lib/math/JSMath.log
+         (f64.sqrt
+          (f64.add
+           (f64.mul
+            (get_local $4)
+            (get_local $4)
+           )
+           (f64.mul
+            (get_local $5)
+            (get_local $5)
+           )
+          )
+         )
+        )
+       )
+       (get_global $~lib/math/JSMath.LN2)
+      )
+     )
+     (i32.store16
+      (i32.shl
+       (i32.add
+        (i32.mul
+         (get_local $0)
+         (get_local $1)
+        )
+        (get_local $8)
+       )
+       (i32.const 1)
+      )
+      (if (result i32)
+       (call $isFinite<f64>
+        (get_local $7)
+       )
+       (i32.trunc_u/f64
+        (f64.mul
+         (f64.const 2047)
+         (call $../../examples/mandelbrot/assembly/index/clamp<f64>
+          (f64.div
+           (f64.sub
+            (f64.convert_u/i32
+             (i32.add
+              (get_local $6)
+              (i32.const 1)
+             )
+            )
+            (get_local $7)
+           )
+           (f64.convert_u/i32
+            (get_local $3)
+           )
+          )
+          (f64.const 0)
+          (f64.const 1)
+         )
+        )
+       )
+       (i32.div_s
+        (i32.mul
+         (get_local $6)
+         (i32.const 2047)
+        )
+        (get_local $3)
+       )
+      )
+     )
+     (set_local $8
       (i32.add
-       (get_local $5)
+       (get_local $8)
        (i32.const 1)
       )
      )
diff --git a/tests/compiler/mandelbrot.ts b/tests/compiler/mandelbrot.ts
index 10f2d29e..b545e849 100644
--- a/tests/compiler/mandelbrot.ts
+++ b/tests/compiler/mandelbrot.ts
@@ -1 +1 @@
-export { compute } from "../../examples/mandelbrot/assembly/index";
+export { computeLine } from "../../examples/mandelbrot/assembly/index";
diff --git a/tests/compiler/mandelbrot.untouched.wat b/tests/compiler/mandelbrot.untouched.wat
index 3199d5e9..86ca2658 100644
--- a/tests/compiler/mandelbrot.untouched.wat
+++ b/tests/compiler/mandelbrot.untouched.wat
@@ -1,17 +1,41 @@
 (module
- (type $iiiv (func (param i32 i32 i32)))
+ (type $iiiiv (func (param i32 i32 i32 i32)))
  (type $FF (func (param f64) (result f64)))
+ (type $Fi (func (param f64) (result i32)))
+ (type $FFFF (func (param f64 f64 f64) (result f64)))
  (import "JSMath" "log" (func $~lib/math/JSMath.log (param f64) (result f64)))
  (import "JSMath" "LN2" (global $~lib/math/JSMath.LN2 f64))
+ (global $../../examples/mandelbrot/assembly/index/NUM_COLORS i32 (i32.const 2048))
  (global $HEAP_BASE i32 (i32.const 4))
  (memory $0 1)
- (export "compute" (func $../../examples/mandelbrot/assembly/index/compute))
+ (export "computeLine" (func $../../examples/mandelbrot/assembly/index/computeLine))
  (export "memory" (memory $0))
- (func $../../examples/mandelbrot/assembly/index/compute (; 1 ;) (type $iiiv) (param $0 i32) (param $1 i32) (param $2 i32)
-  (local $3 f64)
+ (func $isFinite<f64> (; 1 ;) (type $Fi) (param $0 f64) (result i32)
+  (return
+   (f64.eq
+    (f64.sub
+     (get_local $0)
+     (get_local $0)
+    )
+    (f64.const 0)
+   )
+  )
+ )
+ (func $../../examples/mandelbrot/assembly/index/clamp<f64> (; 2 ;) (type $FFFF) (param $0 f64) (param $1 f64) (param $2 f64) (result f64)
+  (return
+   (f64.min
+    (f64.max
+     (get_local $0)
+     (get_local $1)
+    )
+    (get_local $2)
+   )
+  )
+ )
+ (func $../../examples/mandelbrot/assembly/index/computeLine (; 3 ;) (type $iiiiv) (param $0 i32) (param $1 i32) (param $2 i32) (param $3 i32)
   (local $4 f64)
   (local $5 f64)
-  (local $6 i32)
+  (local $6 f64)
   (local $7 f64)
   (local $8 i32)
   (local $9 f64)
@@ -22,317 +46,145 @@
   (local $14 i32)
   (local $15 f64)
   (local $16 i32)
-  (local $17 f64)
-  (set_local $3
-   (f64.div
-    (f64.convert_u/i32
-     (get_local $0)
-    )
-    (f64.const 1.6)
-   )
-  )
+  (local $17 i32)
   (set_local $4
    (f64.div
     (f64.convert_u/i32
      (get_local $1)
     )
-    (f64.const 2)
+    (f64.const 1.6)
    )
   )
   (set_local $5
+   (f64.div
+    (f64.convert_u/i32
+     (get_local $2)
+    )
+    (f64.const 2)
+   )
+  )
+  (set_local $6
    (f64.div
     (f64.const 10)
     (f64.min
      (f64.mul
       (f64.const 3)
       (f64.convert_u/i32
-       (get_local $0)
+       (get_local $1)
       )
      )
      (f64.mul
       (f64.const 4)
       (f64.convert_u/i32
-       (get_local $1)
+       (get_local $2)
       )
      )
     )
    )
   )
+  (set_local $7
+   (f64.mul
+    (f64.sub
+     (f64.convert_u/i32
+      (get_local $0)
+     )
+     (get_local $5)
+    )
+    (get_local $6)
+   )
+  )
   (block $break|0
-   (set_local $6
+   (set_local $8
     (i32.const 0)
    )
    (loop $continue|0
     (if
      (i32.lt_u
-      (get_local $6)
+      (get_local $8)
       (get_local $1)
      )
      (block
       (block
-       (set_local $7
+       (set_local $9
         (f64.mul
          (f64.sub
           (f64.convert_u/i32
-           (get_local $6)
+           (get_local $8)
           )
           (get_local $4)
          )
-         (get_local $5)
+         (get_local $6)
         )
        )
-       (block $break|1
-        (set_local $8
-         (i32.const 0)
+       (block
+        (set_local $10
+         (f64.const 0)
         )
+        (set_local $11
+         (f64.const 0)
+        )
+       )
+       (set_local $14
+        (i32.const 0)
+       )
+       (block $break|1
         (loop $continue|1
          (if
-          (i32.lt_u
-           (get_local $8)
-           (get_local $0)
-          )
-          (block
-           (block
-            (set_local $9
+          (f64.le
+           (f64.add
+            (tee_local $12
              (f64.mul
-              (f64.sub
-               (f64.convert_u/i32
-                (get_local $8)
-               )
-               (get_local $3)
-              )
-              (get_local $5)
+              (get_local $10)
+              (get_local $10)
              )
             )
-            (block
-             (set_local $10
-              (f64.const 0)
-             )
-             (set_local $11
-              (f64.const 0)
-             )
-            )
-            (set_local $14
-             (i32.const 0)
-            )
-            (block $break|2
-             (loop $continue|2
-              (if
-               (f64.le
-                (f64.add
-                 (tee_local $12
-                  (f64.mul
-                   (get_local $10)
-                   (get_local $10)
-                  )
-                 )
-                 (tee_local $13
-                  (f64.mul
-                   (get_local $11)
-                   (get_local $11)
-                  )
-                 )
-                )
-                (f64.const 4)
-               )
-               (block
-                (block
-                 (set_local $15
-                  (f64.add
-                   (f64.sub
-                    (get_local $12)
-                    (get_local $13)
-                   )
-                   (get_local $9)
-                  )
-                 )
-                 (set_local $11
-                  (f64.add
-                   (f64.mul
-                    (f64.mul
-                     (f64.const 2)
-                     (get_local $10)
-                    )
-                    (get_local $11)
-                   )
-                   (get_local $7)
-                  )
-                 )
-                 (set_local $10
-                  (get_local $15)
-                 )
-                 (if
-                  (i32.ge_u
-                   (get_local $14)
-                   (get_local $2)
-                  )
-                  (br $break|2)
-                 )
-                 (set_local $14
-                  (i32.add
-                   (get_local $14)
-                   (i32.const 1)
-                  )
-                 )
-                )
-                (br $continue|2)
-               )
-              )
-             )
-            )
-            (block $break|3
-             (set_local $16
-              (i32.const 0)
-             )
-             (loop $continue|3
-              (if
-               (i32.lt_s
-                (get_local $16)
-                (i32.const 4)
-               )
-               (block
-                (block
-                 (set_local $15
-                  (f64.add
-                   (f64.sub
-                    (tee_local $12
-                     (f64.mul
-                      (get_local $10)
-                      (get_local $10)
-                     )
-                    )
-                    (tee_local $13
-                     (f64.mul
-                      (get_local $11)
-                      (get_local $11)
-                     )
-                    )
-                   )
-                   (get_local $9)
-                  )
-                 )
-                 (set_local $11
-                  (f64.add
-                   (f64.mul
-                    (f64.mul
-                     (f64.const 2)
-                     (get_local $10)
-                    )
-                    (get_local $11)
-                   )
-                   (get_local $7)
-                  )
-                 )
-                 (set_local $10
-                  (get_local $15)
-                 )
-                )
-                (set_local $16
-                 (i32.add
-                  (get_local $16)
-                  (i32.const 1)
-                 )
-                )
-                (br $continue|3)
-               )
-              )
-             )
-            )
-            (set_local $15
-             (f64.div
-              (call $~lib/math/JSMath.log
-               (call $~lib/math/JSMath.log
-                (f64.sqrt
-                 (f64.add
-                  (f64.mul
-                   (get_local $10)
-                   (get_local $10)
-                  )
-                  (f64.mul
-                   (get_local $11)
-                   (get_local $11)
-                  )
-                 )
-                )
-               )
-              )
-              (get_global $~lib/math/JSMath.LN2)
-             )
-            )
-            (if
-             (f64.gt
-              (get_local $15)
-              (f64.const 0)
-             )
-             (block
-              (set_local $17
-               (f64.max
-                (f64.min
-                 (f64.div
-                  (f64.sub
-                   (f64.convert_u/i32
-                    (i32.add
-                     (get_local $14)
-                     (i32.const 1)
-                    )
-                   )
-                   (get_local $15)
-                  )
-                  (f64.convert_u/i32
-                   (get_local $2)
-                  )
-                 )
-                 (f64.const 1)
-                )
-                (f64.const 0)
-               )
-              )
-              (i32.store16
-               (i32.shl
-                (i32.add
-                 (i32.mul
-                  (get_local $6)
-                  (get_local $0)
-                 )
-                 (get_local $8)
-                )
-                (i32.const 1)
-               )
-               (i32.trunc_u/f64
-                (f64.mul
-                 (f64.convert_u/i32
-                  (i32.const 2047)
-                 )
-                 (get_local $17)
-                )
-               )
-              )
-             )
-             (i32.store16
-              (i32.shl
-               (i32.add
-                (i32.mul
-                 (get_local $6)
-                 (get_local $0)
-                )
-                (get_local $8)
-               )
-               (i32.const 1)
-              )
-              (i32.div_u
-               (i32.mul
-                (get_local $14)
-                (i32.const 2047)
-               )
-               (get_local $2)
-              )
+            (tee_local $13
+             (f64.mul
+              (get_local $11)
+              (get_local $11)
              )
             )
            )
-           (set_local $8
-            (i32.add
-             (get_local $8)
-             (i32.const 1)
+           (f64.const 4)
+          )
+          (block
+           (block
+            (set_local $15
+             (f64.add
+              (f64.sub
+               (get_local $12)
+               (get_local $13)
+              )
+              (get_local $9)
+             )
+            )
+            (set_local $11
+             (f64.add
+              (f64.mul
+               (f64.mul
+                (f64.const 2)
+                (get_local $10)
+               )
+               (get_local $11)
+              )
+              (get_local $7)
+             )
+            )
+            (set_local $10
+             (get_local $15)
+            )
+            (if
+             (i32.ge_u
+              (get_local $14)
+              (get_local $3)
+             )
+             (br $break|1)
+            )
+            (set_local $14
+             (i32.add
+              (get_local $14)
+              (i32.const 1)
+             )
             )
            )
            (br $continue|1)
@@ -340,10 +192,160 @@
          )
         )
        )
+       (block $break|2
+        (set_local $16
+         (i32.const 0)
+        )
+        (loop $continue|2
+         (if
+          (i32.and
+           (if (result i32)
+            (tee_local $17
+             (i32.lt_s
+              (get_local $16)
+              (i32.const 5)
+             )
+            )
+            (i32.lt_u
+             (get_local $14)
+             (get_local $3)
+            )
+            (get_local $17)
+           )
+           (i32.const 1)
+          )
+          (block
+           (block
+            (set_local $15
+             (f64.add
+              (f64.sub
+               (f64.mul
+                (get_local $10)
+                (get_local $10)
+               )
+               (f64.mul
+                (get_local $11)
+                (get_local $11)
+               )
+              )
+              (get_local $9)
+             )
+            )
+            (set_local $11
+             (f64.add
+              (f64.mul
+               (f64.mul
+                (f64.const 2)
+                (get_local $10)
+               )
+               (get_local $11)
+              )
+              (get_local $7)
+             )
+            )
+            (set_local $10
+             (get_local $15)
+            )
+           )
+           (block
+            (set_local $16
+             (i32.add
+              (get_local $16)
+              (i32.const 1)
+             )
+            )
+            (set_local $14
+             (i32.add
+              (get_local $14)
+              (i32.const 1)
+             )
+            )
+           )
+           (br $continue|2)
+          )
+         )
+        )
+       )
+       (set_local $15
+        (f64.div
+         (call $~lib/math/JSMath.log
+          (call $~lib/math/JSMath.log
+           (f64.sqrt
+            (f64.add
+             (f64.mul
+              (get_local $10)
+              (get_local $10)
+             )
+             (f64.mul
+              (get_local $11)
+              (get_local $11)
+             )
+            )
+           )
+          )
+         )
+         (get_global $~lib/math/JSMath.LN2)
+        )
+       )
+       (i32.store16
+        (i32.shl
+         (i32.add
+          (i32.mul
+           (get_local $0)
+           (get_local $1)
+          )
+          (get_local $8)
+         )
+         (i32.const 1)
+        )
+        (if (result i32)
+         (call $isFinite<f64>
+          (get_local $15)
+         )
+         (i32.trunc_u/f64
+          (f64.mul
+           (f64.convert_s/i32
+            (i32.sub
+             (i32.const 2048)
+             (i32.const 1)
+            )
+           )
+           (call $../../examples/mandelbrot/assembly/index/clamp<f64>
+            (f64.div
+             (f64.sub
+              (f64.convert_u/i32
+               (i32.add
+                (get_local $14)
+                (i32.const 1)
+               )
+              )
+              (get_local $15)
+             )
+             (f64.convert_u/i32
+              (get_local $3)
+             )
+            )
+            (f64.const 0)
+            (f64.const 1)
+           )
+          )
+         )
+         (i32.div_s
+          (i32.mul
+           (i32.sub
+            (i32.const 2048)
+            (i32.const 1)
+           )
+           (get_local $14)
+          )
+          (get_local $3)
+         )
+        )
+       )
       )
-      (set_local $6
+      (set_local $8
        (i32.add
-        (get_local $6)
+        (get_local $8)
         (i32.const 1)
        )
       )