Added comments to computeOptimumTileSize. Also, Ensure isDivExact is …

…set to false if needed.
openjdk · Mar 6, 2020 · 9ec2d25 · 9ec2d25
1 parent e13b5a0
commit 9ec2d25
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java b/modules/javafx.graphics/src/main/java/com/sun/javafx/tk/quantum/QuantumToolkit.java
@@ -1524,13 +1524,19 @@ private void renderWholeImage(int x, int y, int w, int h, ResourceFactory rf, Qu
             }
 
             private int computeOptimumTileSize(int size, int maxSize, AtomicBoolean isDivExact) {
+                // This methods attempts to find the smallest integer divider for the provided `size`
+                // while the result of the division is less than `maxSize`.
+                // It tests all potential dividers from 2 to 6 and returns the result of the division
+                // if all conditions can be satisfied or, failing that, `maxSize`.
+                // The value for `isDivExact` reflects whether or not an exact divider could be found.
                 for (int n = 2; n <= 6; n++) {
                     int optimumSize = size / n;
                     if (optimumSize <= maxSize && optimumSize * n == size) {
                         isDivExact.set(true);
                         return optimumSize;
                     }
                 }
+                isDivExact.set(false);
                 return maxSize;
             }