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shaped-texture: Use surface coordinates in get_image()

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There were multiple bugs present after the ClutterContent transition.
Refactor `get_image` to:

- always assume surface coordinates for the clip
- return a cairo_surface in buffer size
- make the offscreen path take size arguments, so we can
easily change the assumption in get_image
- fix some clipping bugs on the way

https://gitlab.gnome.org/GNOME/mutter/merge_requests/758
This commit is contained in:
Robert Mader 2019-08-27 16:38:17 +03:00 committed by Jonas Ådahl
parent 1d2913d9b9
commit cd70595b50
1 changed files with 48 additions and 33 deletions
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81
src/compositor/meta-shaped-texture.c
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@ -1114,7 +1114,9 @@ should_get_via_offscreen (MetaShapedTexture *stex)
static cairo_surface_t *
get_image_via_offscreen (MetaShapedTexture *stex,
cairo_rectangle_int_t *clip)
cairo_rectangle_int_t *clip,
int image_width,
int image_height)
{
g_autoptr (ClutterPaintNode) root_node = NULL;
ClutterBackend *clutter_backend = clutter_get_default_backend ();
@ -1132,16 +1134,16 @@ get_image_via_offscreen (MetaShapedTexture *stex,
if (!clip)
{
fallback_clip = (cairo_rectangle_int_t) {
.width = stex->dst_width,
.height = stex->dst_height,
.width = image_width,
.height = image_height,
};
clip = &fallback_clip;
}
image_texture =
COGL_TEXTURE (cogl_texture_2d_new_with_size (cogl_context,
stex->dst_width,
stex->dst_height));
image_width,
image_height));
cogl_primitive_texture_set_auto_mipmap (COGL_PRIMITIVE_TEXTURE (image_texture),
FALSE);
if (!cogl_texture_allocate (COGL_TEXTURE (image_texture), &error))
@ -1164,11 +1166,11 @@ get_image_via_offscreen (MetaShapedTexture *stex,
cogl_framebuffer_push_matrix (fb);
cogl_matrix_init_identity (&projection_matrix);
cogl_matrix_scale (&projection_matrix,
1.0 / (stex->dst_width / 2.0),
-1.0 / (stex->dst_height / 2.0), 0);
1.0 / (image_width / 2.0),
-1.0 / (image_height / 2.0), 0);
cogl_matrix_translate (&projection_matrix,
-(stex->dst_width / 2.0),
-(stex->dst_height / 2.0), 0);
-(image_width / 2.0),
-(image_height / 2.0), 0);
cogl_framebuffer_set_projection_matrix (fb, &projection_matrix);
@ -1180,8 +1182,9 @@ get_image_via_offscreen (MetaShapedTexture *stex,
do_paint_content (stex, root_node,
stex->texture,
&(ClutterActorBox) {
clip->x, clip->y,
clip->width, clip->height,
0, 0,
image_width,
image_height,
},
255);
@ -1219,7 +1222,7 @@ cairo_surface_t *
meta_shaped_texture_get_image (MetaShapedTexture *stex,
cairo_rectangle_int_t *clip)
{
cairo_rectangle_int_t *transformed_clip = NULL;
cairo_rectangle_int_t *image_clip = NULL;
CoglTexture *texture, *mask_texture;
cairo_surface_t *surface;
@ -1239,31 +1242,43 @@ meta_shaped_texture_get_image (MetaShapedTexture *stex,
{
cairo_rectangle_int_t dst_rect;
transformed_clip = alloca (sizeof (cairo_rectangle_int_t));
meta_rectangle_scale_double (clip, stex->buffer_scale,
META_ROUNDING_STRATEGY_GROW,
transformed_clip);
image_clip = alloca (sizeof (cairo_rectangle_int_t));
dst_rect = (cairo_rectangle_int_t) {
.width = stex->dst_width,
.height = stex->dst_height,
};
if (!meta_rectangle_intersect (&dst_rect, transformed_clip,
transformed_clip))
if (!meta_rectangle_intersect (&dst_rect, clip,
image_clip))
return NULL;
*image_clip = (MetaRectangle) {
.x = image_clip->x * stex->buffer_scale,
.y = image_clip->y * stex->buffer_scale,
.width = image_clip->width * stex->buffer_scale,
.height = image_clip->height * stex->buffer_scale,
};
}
if (should_get_via_offscreen (stex))
return get_image_via_offscreen (stex, transformed_clip);
{
int image_width;
int image_height;
if (transformed_clip)
image_width = stex->dst_width * stex->buffer_scale;
image_height = stex->dst_height * stex->buffer_scale;
return get_image_via_offscreen (stex,
image_clip,
image_width,
image_height);
}
if (image_clip)
texture = cogl_texture_new_from_sub_texture (texture,
transformed_clip->x,
transformed_clip->y,
transformed_clip->width,
transformed_clip->height);
image_clip->x,
image_clip->y,
image_clip->width,
image_clip->height);
surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
cogl_texture_get_width (texture),
@ -1275,7 +1290,7 @@ meta_shaped_texture_get_image (MetaShapedTexture *stex,
cairo_surface_mark_dirty (surface);
if (transformed_clip)
if (image_clip)
cogl_object_unref (texture);
mask_texture = stex->mask_texture;
@ -1284,13 +1299,13 @@ meta_shaped_texture_get_image (MetaShapedTexture *stex,
cairo_t *cr;
cairo_surface_t *mask_surface;
if (transformed_clip)
if (image_clip)
mask_texture =
cogl_texture_new_from_sub_texture (mask_texture,
transformed_clip->x,
transformed_clip->y,
transformed_clip->width,
transformed_clip->height);
image_clip->x,
image_clip->y,
image_clip->width,
image_clip->height);
mask_surface = cairo_image_surface_create (CAIRO_FORMAT_A8,
cogl_texture_get_width (mask_texture),
@ -1310,7 +1325,7 @@ meta_shaped_texture_get_image (MetaShapedTexture *stex,
cairo_surface_destroy (mask_surface);
if (transformed_clip)
if (image_clip)
cogl_object_unref (mask_texture);
}