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libweston: Add function to create a view's buffer to output matrix

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This can be helpful in testing if a paint node needs linear vs nearest
neighbour filtering, or if a view can be placed on a plane.

Signed-off-by: Derek Foreman <derek.foreman@collabora.com>
This commit is contained in:
Derek Foreman 2022-01-27 11:29:50 -06:00
parent 92a9860e1d
commit d14753e80c
2 changed files with 14 additions and 0 deletions
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10
libweston/compositor.c
View File

@ -810,6 +810,16 @@ weston_surface_to_buffer_region(struct weston_surface *surface,
free(dest_rects);
}
WL_EXPORT void
weston_view_buffer_to_output_matrix(const struct weston_view *view,
const struct weston_output *output,
struct weston_matrix *matrix)
{
*matrix = view->surface->buffer_to_surface_matrix;
weston_matrix_multiply(matrix, &view->transform.matrix);
weston_matrix_multiply(matrix, &output->matrix);
}
WL_EXPORT void
weston_view_move_to_plane(struct weston_view *view,
struct weston_plane *plane)

4
libweston/libweston-internal.h
View File

@ -367,6 +367,10 @@ weston_view_takes_input_at_point(struct weston_view *view, int x, int y);
void
weston_view_move_to_plane(struct weston_view *view,
struct weston_plane *plane);
void
weston_view_buffer_to_output_matrix(const struct weston_view *view,
const struct weston_output *output,
struct weston_matrix *matrix);
pixman_box32_t
weston_matrix_transform_rect(struct weston_matrix *matrix,