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[[ Bug 21443 ]] Dirty rect even if layer id is 0 #6620

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livecodepanos merged 1 commit into from
Aug 15, 2018
Merged

[[ Bug 21443 ]] Dirty rect even if layer id is 0 #6620

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1 change: 1 addition & 0 deletions docs/notes/bugfix-21443.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
# Fix groups sometimes not redrawing when scrolled
10 changes: 3 additions & 7 deletions engine/src/redraw.cpp
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Expand Up @@ -599,14 +599,10 @@ void MCControl::layer_dirtyeffectiverect(const MCRectangle& p_effective_rect, bo
MCRectangle32 t_device_rect;
t_device_rect = MCRectangle32GetTransformedBounds(t_dirty_rect, t_transform);

// Notify any tilecache of the changes.
if (t_tilecache != nil)
// Notify any tilecache of the changes
// If the layer id is zero, there is nothing to do.
if (t_tilecache != nil && t_control -> m_layer_id != 0)
{
// We must be in tile-cache mode with a top-level control, but if the layer
// id is zero, there is nothing to do.
if (t_control -> m_layer_id == 0)
return;

// How we handle the layer depends on whether it is a sprite or not.
if (!t_control -> layer_issprite())
{
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