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wlr_scene: Introduce buffer opaque region metadata

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This commit is contained in:
Alexander Orzechowski 2022-06-25 23:26:12 -04:00
parent 0a9a941ba3
commit 18417026be
2 changed files with 20 additions and 0 deletions
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8
include/wlr/types/wlr_scene.h
View file

@ -156,6 +156,7 @@ struct wlr_scene_buffer {
struct wlr_fbox src_box;
int dst_width, dst_height;
enum wl_output_transform transform;
pixman_region32_t opaque_region;
};
struct wlr_scene_output_render_list {
@ -346,6 +347,13 @@ void wlr_scene_buffer_set_buffer(struct wlr_scene_buffer *scene_buffer,
void wlr_scene_buffer_set_buffer_with_damage(struct wlr_scene_buffer *scene_buffer,
struct wlr_buffer *buffer, pixman_region32_t *region);
/**
* Sets the buffer's opaque region. This is an optimization hint used to
* determine if buffers which reside under this one need to be rendered or not.
*/
void wlr_scene_buffer_set_opaque_region(struct wlr_scene_buffer *scene_buffer,
pixman_region32_t *region);
/**
* Set the source rectangle describing the region of the buffer which will be
* sampled to render this node. This allows cropping the buffer.

12
types/scene/wlr_scene.c
View file

@ -103,6 +103,7 @@ void wlr_scene_node_destroy(struct wlr_scene_node *node) {
wlr_texture_destroy(scene_buffer->texture);
wlr_buffer_unlock(scene_buffer->buffer);
pixman_region32_fini(&scene_buffer->opaque_region);
} else if (node->type == WLR_SCENE_NODE_TREE) {
struct wlr_scene_tree *scene_tree = scene_tree_from_node(node);
@ -502,6 +503,7 @@ struct wlr_scene_buffer *wlr_scene_buffer_create(struct wlr_scene_tree *parent,
wl_signal_init(&scene_buffer->events.output_leave);
wl_signal_init(&scene_buffer->events.output_present);
wl_signal_init(&scene_buffer->events.frame_done);
pixman_region32_init(&scene_buffer->opaque_region);
scene_node_update(&scene_buffer->node, NULL);
@ -603,6 +605,16 @@ void wlr_scene_buffer_set_buffer(struct wlr_scene_buffer *scene_buffer,
wlr_scene_buffer_set_buffer_with_damage(scene_buffer, buffer, NULL);
}
void wlr_scene_buffer_set_opaque_region(struct wlr_scene_buffer *scene_buffer,
pixman_region32_t *region) {
if (pixman_region32_equal(&scene_buffer->opaque_region, region)) {
return;
}
pixman_region32_copy(&scene_buffer->opaque_region, region);
scene_node_update(&scene_buffer->node, NULL);
}
void wlr_scene_buffer_set_source_box(struct wlr_scene_buffer *scene_buffer,
const struct wlr_fbox *box) {
struct wlr_fbox *cur = &scene_buffer->src_box;