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Fix zoom scaling artifacts

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This commit is contained in:
fourbites
2025-08-27 17:31:39 +02:00
parent 45afe38ccc
commit 6da7fa249b
1 changed files with 10 additions and 6 deletions
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core/src/main/java/com/threerings/media/VirtualMediaPanel.java
+10 -6
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@@ -281,18 +281,22 @@ public class VirtualMediaPanel extends MediaPanel
// and add invalid rectangles for the exposed areas
if (dy > 0) {
shei = Math.max(shei - dy, 0);
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, _vbounds.y + height - dy, width, dy);
// zoom rounding makes it so copyArea can't always get the full region
// so we extend each invalidation region by 1 pixel to make sure we don't leave artifacts
int dy2 = dy + 1;
shei = Math.max(shei - dy2, 0);
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, _vbounds.y + height - dy2, width, dy2);
} else if (dy < 0) {
sy -= dy;
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, _vbounds.y, width, -dy);
int dy2 = dy - 1;
sy -= dy2;
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, _vbounds.y, width, -dy2);
}
if (dx > 0) {
// zoom rounding errors make it so we need to account for potential off-by-one errors
int dx2 = dx + 1;
_metamgr.getRegionManager().invalidateRegion(_vbounds.x + width - dx2, sy, dx2, shei);
} else if (dx < 0) {
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, sy, -dx, shei);
int dx2 = dx - 1;
_metamgr.getRegionManager().invalidateRegion(_vbounds.x, sy, -dx2, shei);
}
addObscurerDirtyRegions(false);