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shaped-texture: Invert transform of damage in update_area()

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Transformed textures need to transform back the damage area, which
is given in buffer coordinates, with the inverted transform.

Fixes https://gitlab.gnome.org/GNOME/mutter/issues/419

https://gitlab.gnome.org/GNOME/mutter/merge_requests/366
This commit is contained in:
Robert Mader 2018-12-21 17:13:38 +01:00
parent 686b7f8baa
commit d52081bed4
1 changed files with 24 additions and 2 deletions
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26
src/compositor/meta-shaped-texture.c
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@ -27,7 +27,9 @@
#include "config.h"
#include "backends/meta-monitor-transform.h"
#include "compositor/meta-shaped-texture-private.h"
#include "core/boxes-private.h"
#include <gdk/gdk.h>
@ -886,12 +888,32 @@ meta_shaped_texture_update_area (MetaShapedTexture *stex,
int height)
{
cairo_region_t *unobscured_region;
const cairo_rectangle_int_t clip = { x, y, width, height };
cairo_rectangle_int_t clip;
MetaMonitorTransform inverted_transform;
if (stex->texture == NULL)
return FALSE;
meta_texture_tower_update_area (stex->paint_tower, x, y, width, height);
clip = (cairo_rectangle_int_t) {
.x = x,
.y = y,
.width = width,
.height = height
};
inverted_transform = meta_monitor_transform_invert (stex->transform);
ensure_size_valid (stex);
meta_rectangle_transform (&clip,
inverted_transform,
stex->dst_width,
stex->dst_height,
&clip);
meta_texture_tower_update_area (stex->paint_tower,
clip.x,
clip.y,
clip.width,
clip.height);
stex->prev_invalidation = stex->last_invalidation;
stex->last_invalidation = g_get_monotonic_time ();