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wlr_scene: Allow buffer in wlr_scene_buffer to be NULL 

This is useful to emulate an unmapped surface.
This commit is contained in:
Alexander Orzechowski 2022-05-19 14:16:52 -04:00
parent 8fe3aa29da
commit 039a31df9a
2 changed files with 11 additions and 2 deletions
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4
include/wlr/types/wlr_scene.h
View File

@ -107,6 +107,8 @@ struct wlr_scene_rect {
/** A scene-graph node displaying a buffer */
struct wlr_scene_buffer {
struct wlr_scene_node node;
// May be NULL
struct wlr_buffer *buffer;
// private state
@ -267,6 +269,8 @@ void wlr_scene_rect_set_color(struct wlr_scene_rect *rect, const float color[sta
/**
* Add a node displaying a buffer to the scene-graph.
*
* If the buffer is NULL, this node will not be displayed.
*/
struct wlr_scene_buffer *wlr_scene_buffer_create(struct wlr_scene_node *parent,
struct wlr_buffer *buffer);

9
types/scene/wlr_scene.c
View File

@ -358,7 +358,9 @@ struct wlr_scene_buffer *wlr_scene_buffer_create(struct wlr_scene_node *parent,
}
scene_node_init(&scene_buffer->node, WLR_SCENE_NODE_BUFFER, parent);
scene_buffer->buffer = wlr_buffer_lock(buffer);
if (buffer) {
scene_buffer->buffer = wlr_buffer_lock(buffer);
}
scene_node_damage_whole(&scene_buffer->node);
@ -447,7 +449,7 @@ static void scene_node_get_size(struct wlr_scene_node *node,
if (scene_buffer->dst_width > 0 && scene_buffer->dst_height > 0) {
*width = scene_buffer->dst_width;
*height = scene_buffer->dst_height;
} else {
} else if (scene_buffer->buffer) {
if (scene_buffer->transform & WL_OUTPUT_TRANSFORM_90) {
*height = scene_buffer->buffer->width;
*width = scene_buffer->buffer->height;
@ -838,6 +840,9 @@ static void render_node_iterator(struct wlr_scene_node *node,
break;
case WLR_SCENE_NODE_BUFFER:;
struct wlr_scene_buffer *scene_buffer = scene_buffer_from_node(node);
if (!scene_buffer->buffer) {
return;
}
struct wlr_renderer *renderer = output->renderer;
texture = scene_buffer_get_texture(scene_buffer, renderer);