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wlr_scene: Rework render_list

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The render_list will now contain every node in the scene. Also, the render
list will contain specific render_list_entry elements. These will store
metadata such as visibility of the node.
This commit is contained in:
Alexander Orzechowski 2023-03-10 14:28:10 +01:00
parent 09a7b64852
commit 592cb9d64c
1 changed files with 94 additions and 60 deletions
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154
types/scene/wlr_scene.c
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@ -1363,66 +1363,81 @@ void wlr_scene_output_set_position(struct wlr_scene_output *scene_output,
scene_output_update_geometry(scene_output);
}
static bool scene_node_invisible(struct wlr_scene_node *node) {
struct render_list_entry {
struct wlr_scene_node *node;
bool visible;
};
static bool scene_construct_render_list(struct wlr_scene_node *node,
struct wl_array *render_list, struct wlr_box *box, bool calculate_visibility,
bool enabled) {
enabled = enabled && node->enabled;
if (node->type == WLR_SCENE_NODE_TREE) {
struct wlr_scene_tree *scene_tree = scene_tree_from_node(node);
struct wlr_scene_node *child;
wl_list_for_each_reverse(child, &scene_tree->children, link) {
if (!scene_construct_render_list(child, render_list, box,
calculate_visibility, enabled)) {
return false;
}
}
return true;
} else if (node->type == WLR_SCENE_NODE_RECT) {
}
struct render_list_entry *entry = wl_array_add(render_list, sizeof(*entry));
if (!entry) {
return false;
}
memset(entry, 0, sizeof(*entry));
entry->node = node;
if (!enabled) {
return true;
}
if (node->type == WLR_SCENE_NODE_RECT) {
struct wlr_scene_rect *rect = scene_rect_from_node(node);
return rect->color[3] == 0.f;
if (rect->color[3] == 0.f) {
return true;
}
} else if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(node);
return buffer->buffer == NULL;
}
return false;
}
struct render_list_constructor_data {
struct wlr_box box;
struct wl_array *render_list;
bool calculate_visibility;
};
static bool construct_render_list_iterator(struct wlr_scene_node *node,
int lx, int ly, void *_data) {
struct render_list_constructor_data *data = _data;
if (scene_node_invisible(node)) {
return false;
if (!buffer->buffer) {
return true;
}
}
// while rendering, the background should always be black.
// If we see a black rect, we can ignore rendering everything under the rect
// and even the rect itself.
if (node->type == WLR_SCENE_NODE_RECT && data->calculate_visibility) {
if (node->type == WLR_SCENE_NODE_RECT && calculate_visibility) {
struct wlr_scene_rect *rect = scene_rect_from_node(node);
float *black = (float[4]){ 0.f, 0.f, 0.f, 1.f };
if (memcmp(rect->color, black, sizeof(float) * 4) == 0) {
return false;
return true;
}
}
pixman_region32_t intersection;
pixman_region32_init(&intersection);
pixman_region32_intersect_rect(&intersection, &node->visible,
data->box.x, data->box.y,
data->box.width, data->box.height);
box->x, box->y, box->width, box->height);
if (!pixman_region32_not_empty(&intersection)) {
pixman_region32_fini(&intersection);
return false;
return true;
}
pixman_region32_fini(&intersection);
struct wlr_scene_node **entry = wl_array_add(data->render_list,
sizeof(struct wlr_scene_node *));
if (entry) {
*entry = node;
}
return false;
entry->visible = true;
return true;
}
static void get_frame_damage(struct wlr_scene_output *scene_output, pixman_region32_t *frame_damage) {
@ -1563,29 +1578,40 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
return true;
}
struct render_list_constructor_data list_con = {
.box = { .x = scene_output->x, .y = scene_output->y },
.render_list = &scene_output->render_list,
.calculate_visibility = scene_output->scene->calculate_visibility,
};
wlr_output_effective_resolution(output,
&list_con.box.width, &list_con.box.height);
struct wl_array *render_list = &scene_output->render_list;
render_list->size = 0;
list_con.render_list->size = 0;
scene_nodes_in_box(&scene_output->scene->tree.node, &list_con.box,
construct_render_list_iterator, &list_con);
array_realloc(list_con.render_list, list_con.render_list->size);
struct wlr_box box = { .x = scene_output->x, .y = scene_output->y };
wlr_output_effective_resolution(output, &box.width, &box.height);
if (!scene_construct_render_list(&scene_output->scene->tree.node, render_list,
&box, scene_output->scene->calculate_visibility, true)) {
return false;
}
array_realloc(render_list, render_list->size);
int list_len = list_con.render_list->size / sizeof(struct wlr_scene_node *);
struct wlr_scene_node **list_data = list_con.render_list->data;
struct render_list_entry *list_data = render_list->data;
int list_len = render_list->size / sizeof(*list_data);
struct render_list_entry *scanout = NULL;
int render_count = 0;
bool sent_direct_scanout_feedback = false;
for (int i = list_len - 1; i >= 0; i--) {
struct render_list_entry *entry = &list_data[i];
if (!entry->visible) {
continue;
}
scanout = entry;
render_count++;
}
// if there is only one thing to render let's see if that thing can be
// directly scanned out
bool scanout = false;
if (list_len == 1) {
struct wlr_scene_node *node = list_data[0];
bool really_scanout = false;;
if (render_count == 1) {
struct wlr_scene_node *node = scanout->node;
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(node);
@ -1601,12 +1627,12 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
sent_direct_scanout_feedback = true;
}
scanout = scene_buffer_try_direct_scanout(buffer, scene_output);
really_scanout = scene_buffer_try_direct_scanout(buffer, scene_output);
}
}
}
if (scene_output->prev_scanout != scanout) {
if (scene_output->prev_scanout != !!scanout) {
scene_output->prev_scanout = scanout;
wlr_log(WLR_DEBUG, "Direct scan-out %s",
scanout ? "enabled" : "disabled");
@ -1616,8 +1642,8 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
}
}
if (scanout) {
struct wlr_scene_node *node = list_data[0];
if (really_scanout) {
struct wlr_scene_node *node = scanout->node;
assert(node->type == WLR_SCENE_NODE_BUFFER);
struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(node);
@ -1695,9 +1721,13 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
float output_scale = scene_output->output->scale;
for (int i = list_len - 1; i >= 0; i--) {
struct wlr_scene_node *node = list_data[i];
struct render_list_entry *entry = &list_data[i];
if (!entry->visible) {
continue;
}
int x, y;
wlr_scene_node_coords(node, &x, &y);
wlr_scene_node_coords(entry->node, &x, &y);
// We must only cull opaque regions that are visible by the node.
// The node's visibility will have the knowledge of a black rect
@ -1706,8 +1736,8 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
// rendering in that black rect region, consider the node's visibility.
pixman_region32_t opaque;
pixman_region32_init(&opaque);
scene_node_opaque_region(node, x, y, &opaque);
pixman_region32_intersect(&opaque, &opaque, &node->visible);
scene_node_opaque_region(entry->node, x, y, &opaque);
pixman_region32_intersect(&opaque, &opaque, &entry->node->visible);
pixman_region32_translate(&opaque, -scene_output->x, -scene_output->y);
wlr_region_scale(&opaque, &opaque, output_scale);
@ -1733,11 +1763,15 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
pixman_region32_fini(&background);
for (int i = list_len - 1; i >= 0; i--) {
struct wlr_scene_node *node = list_data[i];
scene_node_render(node, scene_output, &damage);
struct render_list_entry *entry = &list_data[i];
if (!entry->visible) {
continue;
}
if (node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(node);
scene_node_render(entry->node, scene_output, &damage);
if (entry->node->type == WLR_SCENE_NODE_BUFFER) {
struct wlr_scene_buffer *buffer = wlr_scene_buffer_from_node(entry->node);
if (buffer->primary_output == scene_output && !sent_direct_scanout_feedback) {
struct wlr_linux_dmabuf_feedback_v1_init_options options = {