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wlr_scene: Refactor wlr_scene_surface to be a helper on top of wlr_scene_buffer

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This commit is contained in:
Alexander Orzechowski 2022-05-19 14:26:50 -04:00
parent 5f43e1732a
commit dc9bc5683a
7 changed files with 208 additions and 244 deletions
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4
examples/scene-graph.c
View file

@ -99,7 +99,7 @@ static void surface_handle_commit(struct wl_listener *listener, void *data) {
static void surface_handle_destroy(struct wl_listener *listener, void *data) {
struct surface *surface = wl_container_of(listener, surface, destroy);
wlr_scene_node_destroy(&surface->scene_surface->node);
wlr_scene_node_destroy(&surface->scene_surface->buffer->node);
wlr_scene_node_destroy(&surface->border->node);
wl_list_remove(&surface->destroy.link);
wl_list_remove(&surface->link);
@ -129,7 +129,7 @@ static void server_handle_new_surface(struct wl_listener *listener,
surface->scene_surface =
wlr_scene_surface_create(&server->scene->node, wlr_surface);
wlr_scene_node_set_position(&surface->scene_surface->node,
wlr_scene_node_set_position(&surface->scene_surface->buffer->node,
pos + border_width, pos + border_width);
}

26
include/wlr/types/wlr_scene.h
View file

@ -43,7 +43,6 @@ typedef void (*wlr_scene_buffer_iterator_func_t)(
enum wlr_scene_node_type {
WLR_SCENE_NODE_ROOT,
WLR_SCENE_NODE_TREE,
WLR_SCENE_NODE_SURFACE,
WLR_SCENE_NODE_RECT,
WLR_SCENE_NODE_BUFFER,
};
@ -93,21 +92,17 @@ struct wlr_scene_tree {
/** A scene-graph node displaying a single surface. */
struct wlr_scene_surface {
struct wlr_scene_node node;
struct wlr_scene_buffer *buffer;
struct wlr_surface *surface;
/**
* The output that the largest area of this surface is displayed on.
* This may be NULL if the surface is not currently displayed on any
* outputs. This is the output that should be used for frame callbacks,
* presentation feedback, etc.
*/
struct wlr_output *primary_output;
// private state
int prev_width, prev_height;
struct wlr_addon addon;
struct wl_listener output_enter;
struct wl_listener output_leave;
struct wl_listener output_present;
struct wl_listener frame_done;
struct wl_listener surface_destroy;
struct wl_listener surface_commit;
};
@ -276,10 +271,15 @@ struct wlr_scene_tree *wlr_scene_tree_create(struct wlr_scene_node *parent);
struct wlr_scene_surface *wlr_scene_surface_create(struct wlr_scene_node *parent,
struct wlr_surface *surface);
struct wlr_scene_surface *wlr_scene_surface_from_node(struct wlr_scene_node *node);
struct wlr_scene_buffer *wlr_scene_buffer_from_node(struct wlr_scene_node *node);
/**
* If this buffer is backed by a surface, then the wlr_scene_surface is
* returned. If not, NULL will be returned.
*/
struct wlr_scene_surface *wlr_scene_surface_from_buffer(
struct wlr_scene_buffer *scene_buffer);
/**
* Add a node displaying a solid-colored rectangle to the scene-graph.
*/

11
tinywl/tinywl.c
View file

@ -341,10 +341,17 @@ static struct tinywl_view *desktop_view_at(
* surface in the surface tree of a tinywl_view. */
struct wlr_scene_node *node = wlr_scene_node_at(
&server->scene->node, lx, ly, sx, sy);
if (node == NULL || node->type != WLR_SCENE_NODE_SURFACE) {
if (node == NULL || node->type != WLR_SCENE_NODE_BUFFER) {
return NULL;
}
*surface = wlr_scene_surface_from_node(node)->surface;
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_from_node(node);
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_buffer(scene_buffer);
if (!scene_surface) {
return NULL;
}
*surface = scene_surface->surface;
/* Find the node corresponding to the tinywl_view at the root of this
* surface tree, it is the only one for which we set the data field. */
while (node != NULL && node->data == NULL) {

1
types/meson.build
View file

@ -8,6 +8,7 @@ wlr_files += files(
'output/render.c',
'output/transform.c',
'scene/subsurface_tree.c',
'scene/surface.c',
'scene/wlr_scene.c',
'scene/output_layout.c',
'scene/xdg_shell.c',

4
types/scene/subsurface_tree.c
View file

@ -81,9 +81,9 @@ static void subsurface_tree_reconfigure(
}
if (prev != NULL) {
wlr_scene_node_place_above(&subsurface_tree->scene_surface->node, prev);
wlr_scene_node_place_above(&subsurface_tree->scene_surface->buffer->node, prev);
}
prev = &subsurface_tree->scene_surface->node;
prev = &subsurface_tree->scene_surface->buffer->node;
wl_list_for_each(subsurface, &surface->current.subsurfaces_above,
current.link) {

179
types/scene/surface.c Normal file
View file

@ -0,0 +1,179 @@
#include <stdlib.h>
#include <wlr/types/wlr_scene.h>
#include <wlr/types/wlr_presentation_time.h>
#include "types/wlr_scene.h"
static void handle_scene_buffer_output_enter(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, output_enter);
struct wlr_scene_output *output = data;
wlr_surface_send_enter(surface->surface, output->output);
}
static void handle_scene_buffer_output_leave(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, output_leave);
struct wlr_scene_output *output = data;
wlr_surface_send_leave(surface->surface, output->output);
}
static void handle_scene_buffer_output_present(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, output_present);
struct wlr_scene_output *scene_output = data;
if (surface->buffer->primary_output == scene_output) {
struct wlr_scene *root = scene_node_get_root(&surface->buffer->node);
struct wlr_presentation *presentation = root->presentation;
if (presentation) {
wlr_presentation_surface_sampled_on_output(
presentation, surface->surface, scene_output->output);
}
}
}
static void handle_scene_buffer_frame_done(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, frame_done);
struct timespec *now = data;
wlr_surface_send_frame_done(surface->surface, now);
}
static void scene_surface_handle_surface_destroy(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, surface_destroy);
wlr_scene_node_destroy(&surface->buffer->node);
}
static void set_buffer_with_surface_state(struct wlr_scene_buffer *scene_buffer,
struct wlr_surface *surface) {
struct wlr_surface_state *state = &surface->current;
struct wlr_fbox src_box;
wlr_surface_get_buffer_source_box(surface, &src_box);
wlr_scene_buffer_set_source_box(scene_buffer, &src_box);
wlr_scene_buffer_set_dest_size(scene_buffer, state->width, state->height);
wlr_scene_buffer_set_transform(scene_buffer, state->transform);
if (surface->buffer) {
wlr_scene_buffer_set_buffer_with_damage(scene_buffer,
&surface->buffer->base, &surface->buffer_damage);
} else {
wlr_scene_buffer_set_buffer(scene_buffer, NULL);
}
}
static void handle_scene_surface_surface_commit(
struct wl_listener *listener, void *data) {
struct wlr_scene_surface *surface =
wl_container_of(listener, surface, surface_commit);
struct wlr_scene_buffer *scene_buffer = surface->buffer;
set_buffer_with_surface_state(scene_buffer, surface->surface);
// Even if the surface hasn't submitted damage, schedule a new frame if
// the client has requested a wl_surface.frame callback. Check if the node
// is visible. If not, the client will never receive a frame_done event
// anyway so it doesn't make sense to schedule here.
int lx, ly;
bool enabled = wlr_scene_node_coords(&scene_buffer->node, &lx, &ly);
if (!wl_list_empty(&surface->surface->current.frame_callback_list) &&
surface->buffer->primary_output != NULL && enabled) {
wlr_output_schedule_frame(surface->buffer->primary_output->output);
}
}
static bool scene_buffer_point_accepts_input(struct wlr_scene_buffer *scene_buffer,
int sx, int sy) {
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_buffer(scene_buffer);
return wlr_surface_point_accepts_input(scene_surface->surface, sx, sy);
}
static void surface_addon_destroy(struct wlr_addon *addon) {
struct wlr_scene_surface *surface = wl_container_of(addon, surface, addon);
wlr_addon_finish(&surface->addon);
wl_list_remove(&surface->output_enter.link);
wl_list_remove(&surface->output_leave.link);
wl_list_remove(&surface->output_present.link);
wl_list_remove(&surface->frame_done.link);
wl_list_remove(&surface->surface_destroy.link);
wl_list_remove(&surface->surface_commit.link);
free(surface);
}
static const struct wlr_addon_interface surface_addon_impl = {
.name = "wlr_scene_surface",
.destroy = surface_addon_destroy,
};
struct wlr_scene_surface *wlr_scene_surface_from_buffer(
struct wlr_scene_buffer *scene_buffer) {
struct wlr_addon *addon = wlr_addon_find(&scene_buffer->node.addons,
scene_buffer, &surface_addon_impl);
if (!addon) {
return NULL;
}
struct wlr_scene_surface *surface = wl_container_of(addon, surface, addon);
return surface;
}
struct wlr_scene_surface *wlr_scene_surface_create(struct wlr_scene_node *parent,
struct wlr_surface *wlr_surface) {
struct wlr_scene_surface *surface = calloc(1, sizeof(*surface));
if (surface == NULL) {
return NULL;
}
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_create(parent, NULL);
if (!scene_buffer) {
free(surface);
return NULL;
}
surface->buffer = scene_buffer;
surface->surface = wlr_surface;
scene_buffer->point_accepts_input = scene_buffer_point_accepts_input;
surface->output_enter.notify = handle_scene_buffer_output_enter;
wl_signal_add(&scene_buffer->events.output_enter, &surface->output_enter);
surface->output_leave.notify = handle_scene_buffer_output_leave;
wl_signal_add(&scene_buffer->events.output_leave, &surface->output_leave);
surface->output_present.notify = handle_scene_buffer_output_present;
wl_signal_add(&scene_buffer->events.output_present, &surface->output_present);
surface->frame_done.notify = handle_scene_buffer_frame_done;
wl_signal_add(&scene_buffer->events.frame_done, &surface->frame_done);
surface->surface_destroy.notify = scene_surface_handle_surface_destroy;
wl_signal_add(&wlr_surface->events.destroy, &surface->surface_destroy);
surface->surface_commit.notify = handle_scene_surface_surface_commit;
wl_signal_add(&wlr_surface->events.commit, &surface->surface_commit);
wlr_addon_init(&surface->addon, &scene_buffer->node.addons,
scene_buffer, &surface_addon_impl);
set_buffer_with_surface_state(scene_buffer, wlr_surface);
return surface;
}

227
types/scene/wlr_scene.c
View file

@ -18,12 +18,6 @@ static struct wlr_scene *scene_root_from_node(struct wlr_scene_node *node) {
return (struct wlr_scene *)node;
}
struct wlr_scene_surface *wlr_scene_surface_from_node(
struct wlr_scene_node *node) {
assert(node->type == WLR_SCENE_NODE_SURFACE);
return (struct wlr_scene_surface *)node;
}
static struct wlr_scene_rect *scene_rect_from_node(
struct wlr_scene_node *node) {
assert(node->type == WLR_SCENE_NODE_RECT);
@ -96,18 +90,6 @@ void wlr_scene_node_destroy(struct wlr_scene_node *node) {
wl_list_remove(&scene->presentation_destroy.link);
break;
case WLR_SCENE_NODE_SURFACE:;
struct wlr_scene_surface *scene_surface = wlr_scene_surface_from_node(node);
wl_list_for_each(scene_output, &scene->outputs, link) {
// This is a noop if wlr_surface_send_enter() wasn't previously called for
// the given output.
wlr_surface_send_leave(scene_surface->surface, scene_output->output);
}
wl_list_remove(&scene_surface->surface_commit.link);
wl_list_remove(&scene_surface->surface_destroy.link);
break;
case WLR_SCENE_NODE_BUFFER:;
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_from_node(node);
@ -161,58 +143,8 @@ struct wlr_scene_tree *wlr_scene_tree_create(struct wlr_scene_node *parent) {
return tree;
}
static void scene_surface_handle_surface_destroy(struct wl_listener *listener,
void *data) {
struct wlr_scene_surface *scene_surface =
wl_container_of(listener, scene_surface, surface_destroy);
wlr_scene_node_destroy(&scene_surface->node);
}
static void scene_node_get_size(struct wlr_scene_node *node, int *lx, int *ly);
// This function must be called whenever the coordinates/dimensions of a scene
// surface or scene output change. It is not necessary to call when a scene
// surface's node is enabled/disabled or obscured by other nodes. To quote the
// protocol: "The surface might be hidden even if no leave event has been sent."
static void scene_surface_update_outputs(
struct wlr_scene_surface *scene_surface,
int lx, int ly, struct wlr_scene *scene) {
struct wlr_box surface_box = {
.x = lx,
.y = ly,
.width = scene_surface->surface->current.width,
.height = scene_surface->surface->current.height,
};
int largest_overlap = 0;
scene_surface->primary_output = NULL;
struct wlr_scene_output *scene_output;
wl_list_for_each(scene_output, &scene->outputs, link) {
struct wlr_box output_box = {
.x = scene_output->x,
.y = scene_output->y,
};
wlr_output_effective_resolution(scene_output->output,
&output_box.width, &output_box.height);
struct wlr_box intersection;
if (wlr_box_intersection(&intersection, &surface_box, &output_box)) {
int overlap = intersection.width * intersection.height;
if (overlap > largest_overlap) {
largest_overlap = overlap;
scene_surface->primary_output = scene_output->output;
}
// These enter/leave functions are a noop if the event has already been
// sent for the given output.
wlr_surface_send_enter(scene_surface->surface, scene_output->output);
} else {
wlr_surface_send_leave(scene_surface->surface, scene_output->output);
}
}
}
// This function must be called whenever the coordinates/dimensions of a scene
// buffer or scene output change. It is not necessary to call when a scene
// buffer's node is enabled/disabled or obscured by other nodes.
@ -258,11 +190,7 @@ static void scene_buffer_update_outputs(
static void _scene_node_update_outputs(
struct wlr_scene_node *node, int lx, int ly, struct wlr_scene *scene) {
if (node->type == WLR_SCENE_NODE_SURFACE) {
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_node(node);
scene_surface_update_outputs(scene_surface, lx, ly, scene);
} else if (node->type == WLR_SCENE_NODE_BUFFER) {
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *scene_buffer =
wlr_scene_buffer_from_node(node);
scene_buffer_update_outputs(scene_buffer, lx, ly, scene);
@ -282,86 +210,6 @@ static void scene_node_update_outputs(struct wlr_scene_node *node) {
_scene_node_update_outputs(node, lx, ly, scene);
}
static void scene_surface_handle_surface_commit(struct wl_listener *listener,
void *data) {
struct wlr_scene_surface *scene_surface =
wl_container_of(listener, scene_surface, surface_commit);
struct wlr_surface *surface = scene_surface->surface;
struct wlr_scene *scene = scene_node_get_root(&scene_surface->node);
int lx, ly;
bool enabled = wlr_scene_node_coords(&scene_surface->node, &lx, &ly);
if (surface->current.width != scene_surface->prev_width ||
surface->current.height != scene_surface->prev_height) {
scene_surface_update_outputs(scene_surface, lx, ly, scene);
scene_surface->prev_width = surface->current.width;
scene_surface->prev_height = surface->current.height;
}
if (!enabled) {
return;
}
// Even if the surface hasn't submitted damage, schedule a new frame if
// the client has requested a wl_surface.frame callback.
if (!wl_list_empty(&surface->current.frame_callback_list) &&
scene_surface->primary_output != NULL) {
wlr_output_schedule_frame(scene_surface->primary_output);
}
if (!pixman_region32_not_empty(&surface->buffer_damage)) {
return;
}
struct wlr_scene_output *scene_output;
wl_list_for_each(scene_output, &scene->outputs, link) {
struct wlr_output *output = scene_output->output;
pixman_region32_t damage;
pixman_region32_init(&damage);
wlr_surface_get_effective_damage(surface, &damage);
pixman_region32_translate(&damage,
lx - scene_output->x, ly - scene_output->y);
wlr_region_scale(&damage, &damage, output->scale);
if (ceil(output->scale) > surface->current.scale) {
// When scaling up a surface it'll become blurry, so we need to
// expand the damage region.
wlr_region_expand(&damage, &damage,
ceil(output->scale) - surface->current.scale);
}
wlr_output_damage_add(scene_output->damage, &damage);
pixman_region32_fini(&damage);
}
}
struct wlr_scene_surface *wlr_scene_surface_create(struct wlr_scene_node *parent,
struct wlr_surface *surface) {
struct wlr_scene_surface *scene_surface =
calloc(1, sizeof(struct wlr_scene_surface));
if (scene_surface == NULL) {
return NULL;
}
scene_node_init(&scene_surface->node, WLR_SCENE_NODE_SURFACE, parent);
scene_surface->surface = surface;
scene_surface->surface_destroy.notify = scene_surface_handle_surface_destroy;
wl_signal_add(&surface->events.destroy, &scene_surface->surface_destroy);
scene_surface->surface_commit.notify = scene_surface_handle_surface_commit;
wl_signal_add(&surface->events.commit, &scene_surface->surface_commit);
scene_node_damage_whole(&scene_surface->node);
scene_node_update_outputs(&scene_surface->node);
return scene_surface;
}
struct wlr_scene_rect *wlr_scene_rect_create(struct wlr_scene_node *parent,
int width, int height, const float color[static 4]) {
struct wlr_scene_rect *scene_rect =
@ -589,12 +437,6 @@ static void scene_node_get_size(struct wlr_scene_node *node,
case WLR_SCENE_NODE_ROOT:
case WLR_SCENE_NODE_TREE:
return;
case WLR_SCENE_NODE_SURFACE:;
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_node(node);
*width = scene_surface->surface->current.width;
*height = scene_surface->surface->current.height;
break;
case WLR_SCENE_NODE_RECT:;
struct wlr_scene_rect *scene_rect = scene_rect_from_node(node);
*width = scene_rect->width;
@ -838,10 +680,6 @@ struct wlr_scene_node *wlr_scene_node_at(struct wlr_scene_node *node,
case WLR_SCENE_NODE_ROOT:
case WLR_SCENE_NODE_TREE:
break;
case WLR_SCENE_NODE_SURFACE:;
struct wlr_scene_surface *scene_surface = wlr_scene_surface_from_node(node);
intersects = wlr_surface_point_accepts_input(scene_surface->surface, lx, ly);
break;
case WLR_SCENE_NODE_RECT:;
int width, height;
scene_node_get_size(node, &width, &height);
@ -948,9 +786,6 @@ static void render_texture(struct wlr_output *output,
struct render_data {
struct wlr_scene_output *scene_output;
pixman_region32_t *damage;
// May be NULL
struct wlr_presentation *presentation;
};
static void render_node_iterator(struct wlr_scene_node *node,
@ -975,30 +810,6 @@ static void render_node_iterator(struct wlr_scene_node *node,
case WLR_SCENE_NODE_TREE:
/* Root or tree node has nothing to render itself */
break;
case WLR_SCENE_NODE_SURFACE:;
struct wlr_scene_surface *scene_surface = wlr_scene_surface_from_node(node);
struct wlr_surface *surface = scene_surface->surface;
texture = wlr_surface_get_texture(surface);
if (texture == NULL) {
return;
}
transform = wlr_output_transform_invert(surface->current.transform);
wlr_matrix_project_box(matrix, &dst_box, transform, 0.0,
output->transform_matrix);
struct wlr_fbox src_box = {0};
wlr_surface_get_buffer_source_box(surface, &src_box);
render_texture(output, output_damage, texture,
&src_box, &dst_box, matrix);
if (data->presentation != NULL && scene_surface->primary_output == output) {
wlr_presentation_surface_sampled_on_output(data->presentation,
surface, output);
}
break;
case WLR_SCENE_NODE_RECT:;
struct wlr_scene_rect *scene_rect = scene_rect_from_node(node);
@ -1141,11 +952,7 @@ struct wlr_scene_output *wlr_scene_output_create(struct wlr_scene *scene,
static void scene_node_remove_output(struct wlr_scene_node *node,
struct wlr_scene_output *output) {
if (node->type == WLR_SCENE_NODE_SURFACE) {
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_node(node);
wlr_surface_send_leave(scene_surface->surface, output->output);
} else if (node->type == WLR_SCENE_NODE_BUFFER) {
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *scene_buffer =
wlr_scene_buffer_from_node(node);
uint64_t mask = 1ull << output->index;
@ -1246,15 +1053,6 @@ static bool scene_output_scanout(struct wlr_scene_output *scene_output) {
struct wlr_scene_node *node = check_scanout_data.node;
struct wlr_buffer *buffer;
switch (node->type) {
case WLR_SCENE_NODE_SURFACE:;
struct wlr_scene_surface *scene_surface = wlr_scene_surface_from_node(node);
if (scene_surface->surface->buffer == NULL ||
scene_surface->surface->current.viewport.has_src ||
scene_surface->surface->current.transform != output->transform) {
return false;
}
buffer = &scene_surface->surface->buffer->base;
break;
case WLR_SCENE_NODE_BUFFER:;
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_from_node(node);
if (scene_buffer->buffer == NULL ||
@ -1274,18 +1072,6 @@ static bool scene_output_scanout(struct wlr_scene_output *scene_output) {
return false;
}
struct wlr_presentation *presentation = scene_output->scene->presentation;
if (presentation != NULL && node->type == WLR_SCENE_NODE_SURFACE) {
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_node(node);
// Since outputs may overlap, we still need to check this even though
// we know that the surface size matches the size of this output.
if (scene_surface->primary_output == output) {
wlr_presentation_surface_sampled_on_output(presentation,
scene_surface->surface, output);
}
}
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *scene_buffer =
wlr_scene_buffer_from_node(node);
@ -1340,7 +1126,6 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
struct render_data data = {
.scene_output = scene_output,
.damage = &damage,
.presentation = scene_output->scene->presentation,
};
scene_node_for_each_node(&scene_output->scene->node,
-scene_output->x, -scene_output->y,
@ -1373,14 +1158,6 @@ static void scene_node_send_frame_done(struct wlr_scene_node *node,
return;
}
if (node->type == WLR_SCENE_NODE_SURFACE) {
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_node(node);
if (scene_surface->primary_output == scene_output->output) {
wlr_surface_send_frame_done(scene_surface->surface, now);
}
}
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *scene_buffer =
wlr_scene_buffer_from_node(node);