diff --git a/tools/winscope/src/Rects.vue b/tools/winscope/src/Rects.vue
index 49d4da979..9548d7e3e 100644
--- a/tools/winscope/src/Rects.vue
+++ b/tools/winscope/src/Rects.vue
@@ -24,6 +24,8 @@
 
 <script>
 
+import { multiply_rect } from './matrix_utils.js'
+
 export default {
   name: 'rects',
   props: ['bounds', 'rects', 'highlight'],
@@ -37,8 +39,8 @@ export default {
       if (this.bounds) {
         return this.bounds;
       }
-      var width = Math.max(...this.rects.map((r) => r.right));
-      var height = Math.max(...this.rects.map((r) => r.bottom));
+      var width = Math.max(...this.rects.map((r) => multiply_rect(r.transform, r).right));
+      var height = Math.max(...this.rects.map((r) => multiply_rect(r.transform, r).bottom));
       return {width, height};
     },
     boundsStyle() {
diff --git a/tools/winscope/src/matrix_utils.js b/tools/winscope/src/matrix_utils.js
index 6d7d44fdb..2c7bd3ac5 100644
--- a/tools/winscope/src/matrix_utils.js
+++ b/tools/winscope/src/matrix_utils.js
@@ -172,4 +172,32 @@ function is_type_flag_clear(transform, bits) {
   return (type & bits) === 0;
 }
 
-export {format_transform_type, fill_transform_data, is_simple_transform};
\ No newline at end of file
+function multiply_vec2(matrix, x, y) {
+  // |dsdx dsdy  tx|     | x |
+  // |dtdx dtdy  ty|  x  | y |
+  // |0    0     1 |     | 1 |
+  return { 
+    x: matrix.dsdx * x + matrix.dsdy * y + matrix.tx,  
+    y: matrix.dtdx * x + matrix.dtdy * y + matrix.ty
+  };
+}
+
+function multiply_rect(matrix, rect) {
+  //          |dsdx dsdy  tx|         | left, top         |
+  // matrix = |dtdx dtdy  ty|  rect = |                   |
+  //          |0    0     1 |         |     right, bottom |
+
+  var left_top = multiply_vec2(matrix, rect.left, rect.top);
+  var right_top = multiply_vec2(matrix, rect.right, rect.top);
+  var left_bottom = multiply_vec2(matrix, rect.left, rect.bottom);
+  var right_bottom = multiply_vec2(matrix, rect.right, rect.bottom);
+
+  var outrect = {};
+  outrect.left   = Math.min(left_top.x, right_top.x, left_bottom.x, right_bottom.x);
+  outrect.top    = Math.min(left_top.y, right_top.y, left_bottom.y, right_bottom.y);
+  outrect.right  = Math.max(left_top.x, right_top.x, left_bottom.x, right_bottom.x);
+  outrect.bottom = Math.max(left_top.y, right_top.y, left_bottom.y, right_bottom.y);
+  return outrect;
+}
+
+export {format_transform_type, fill_transform_data, is_simple_transform, multiply_rect};
\ No newline at end of file