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view: add max_render_time
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parent
5421198489
commit
bd9a53f1a3
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@ -145,6 +145,7 @@ sway_cmd cmd_kill;
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sway_cmd cmd_layout;
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sway_cmd cmd_log_colors;
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sway_cmd cmd_mark;
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sway_cmd cmd_max_render_time;
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sway_cmd cmd_mode;
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sway_cmd cmd_mouse_warping;
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sway_cmd cmd_move;
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@ -72,7 +72,7 @@ struct sway_output *output_get_in_direction(struct sway_output *reference,
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void output_add_workspace(struct sway_output *output,
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struct sway_workspace *workspace);
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typedef void (*sway_surface_iterator_func_t)(struct sway_output *output,
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typedef void (*sway_surface_iterator_func_t)(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *box, float rotation,
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void *user_data);
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@ -6,6 +6,13 @@ struct sway_surface {
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struct wlr_surface *wlr_surface;
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struct wl_listener destroy;
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/**
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* This timer can be used for issuing delayed frame done callbacks (for
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* example, to improve presentation latency). Its handler is set to a
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* function that issues a frame done callback to this surface.
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*/
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struct wl_event_source *frame_done_timer;
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};
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#endif
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@ -108,6 +108,8 @@ struct sway_view {
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} events;
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struct wl_listener surface_new_subsurface;
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int max_render_time; // In milliseconds
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};
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struct sway_xdg_shell_view {
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@ -119,6 +119,7 @@ static struct cmd_handler command_handlers[] = {
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{ "kill", cmd_kill },
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{ "layout", cmd_layout },
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{ "mark", cmd_mark },
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{ "max_render_time", cmd_max_render_time },
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{ "move", cmd_move },
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{ "nop", cmd_nop },
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{ "opacity", cmd_opacity },
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32
sway/commands/max_render_time.c
Normal file
32
sway/commands/max_render_time.c
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@ -0,0 +1,32 @@
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#include <strings.h>
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#include "sway/commands.h"
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#include "sway/config.h"
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#include "sway/tree/view.h"
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struct cmd_results *cmd_max_render_time(int argc, char **argv) {
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if (!argc) {
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return cmd_results_new(CMD_INVALID, "Missing max render time argument.");
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}
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int max_render_time;
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if (!strcmp(*argv, "off")) {
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max_render_time = 0;
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} else {
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char *end;
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max_render_time = strtol(*argv, &end, 10);
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if (*end || max_render_time <= 0) {
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return cmd_results_new(CMD_INVALID, "Invalid max render time.");
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}
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}
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struct sway_container *container = config->handler_context.container;
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if (!container || !container->view) {
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return cmd_results_new(CMD_INVALID,
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"Only views can have a max_render_time");
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}
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struct sway_view *view = container->view;
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view->max_render_time = max_render_time;
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return cmd_results_new(CMD_SUCCESS, NULL);
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}
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@ -23,6 +23,7 @@
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#include "sway/layers.h"
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#include "sway/output.h"
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#include "sway/server.h"
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#include "sway/surface.h"
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#include "sway/tree/arrange.h"
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#include "sway/tree/container.h"
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#include "sway/tree/root.h"
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@ -80,6 +81,7 @@ struct surface_iterator_data {
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void *user_data;
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struct sway_output *output;
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struct sway_view *view;
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double ox, oy;
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int width, height;
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float rotation;
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@ -134,7 +136,7 @@ static void output_for_each_surface_iterator(struct wlr_surface *surface,
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return;
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}
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data->user_iterator(data->output, surface, &box, data->rotation,
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data->user_iterator(data->output, data->view, surface, &box, data->rotation,
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data->user_data);
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}
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@ -145,6 +147,7 @@ void output_surface_for_each_surface(struct sway_output *output,
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.user_iterator = iterator,
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.user_data = user_data,
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.output = output,
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.view = NULL,
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.ox = ox,
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.oy = oy,
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.width = surface->current.width,
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@ -163,6 +166,7 @@ void output_view_for_each_surface(struct sway_output *output,
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.user_iterator = iterator,
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.user_data = user_data,
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.output = output,
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.view = view,
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.ox = view->container->surface_x - output->lx
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- view->geometry.x,
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.oy = view->container->surface_y - output->ly
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@ -182,6 +186,7 @@ void output_view_for_each_popup(struct sway_output *output,
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.user_iterator = iterator,
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.user_data = user_data,
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.output = output,
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.view = view,
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.ox = view->container->surface_x - output->lx
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- view->geometry.x,
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.oy = view->container->surface_y - output->ly
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@ -224,6 +229,7 @@ void output_layer_for_each_surface(struct sway_output *output,
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.user_iterator = iterator,
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.user_data = user_data,
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.output = output,
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.view = NULL,
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.ox = popup_sx,
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.oy = popup_sy,
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.width = surface->current.width,
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@ -291,6 +297,7 @@ static void output_for_each_surface(struct sway_output *output,
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.user_iterator = iterator,
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.user_data = user_data,
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.output = output,
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.view = NULL,
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};
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struct sway_workspace *workspace = output_get_active_workspace(output);
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@ -401,18 +408,37 @@ bool output_has_opaque_overlay_layer_surface(struct sway_output *output) {
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return false;
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}
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static void send_frame_done_iterator(struct sway_output *output,
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struct send_frame_done_data {
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struct timespec when;
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int msec_until_refresh;
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};
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static void send_frame_done_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *box, float rotation,
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void *data) {
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struct timespec *when = data;
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wlr_surface_send_frame_done(surface, when);
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void *user_data) {
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int view_max_render_time = 0;
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if (view != NULL) {
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view_max_render_time = view->max_render_time;
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}
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struct send_frame_done_data *data = user_data;
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int delay = data->msec_until_refresh - output->max_render_time
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- view_max_render_time;
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if (output->max_render_time == 0 || view_max_render_time == 0 || delay < 1) {
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wlr_surface_send_frame_done(surface, &data->when);
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} else {
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struct sway_surface *sway_surface = surface->data;
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wl_event_source_timer_update(sway_surface->frame_done_timer, delay);
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}
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}
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static void send_frame_done(struct sway_output *output, struct timespec *when) {
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output_for_each_surface(output, send_frame_done_iterator, when);
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static void send_frame_done(struct sway_output *output, struct send_frame_done_data *data) {
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output_for_each_surface(output, send_frame_done_iterator, data);
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}
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static void count_surface_iterator(struct sway_output *output,
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static void count_surface_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *_box, float rotation,
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void *data) {
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size_t *n = data;
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@ -533,7 +559,7 @@ int output_repaint_timer_handler(void *data) {
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return 0;
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}
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static void damage_handle_frame(struct wl_listener *listener, void *data) {
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static void damage_handle_frame(struct wl_listener *listener, void *user_data) {
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struct sway_output *output =
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wl_container_of(listener, output, damage_frame);
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if (!output->enabled || !output->wlr_output->enabled) {
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@ -592,9 +618,10 @@ static void damage_handle_frame(struct wl_listener *listener, void *data) {
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}
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// Send frame done to all visible surfaces
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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send_frame_done(output, &now);
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struct send_frame_done_data data = {0};
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clock_gettime(CLOCK_MONOTONIC, &data.when);
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data.msec_until_refresh = msec_until_refresh;
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send_frame_done(output, &data);
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}
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void output_damage_whole(struct sway_output *output) {
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@ -605,7 +632,7 @@ void output_damage_whole(struct sway_output *output) {
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}
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}
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static void damage_surface_iterator(struct sway_output *output,
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static void damage_surface_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *_box, float rotation,
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void *_data) {
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bool *data = _data;
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@ -811,7 +838,7 @@ static void handle_scale(struct wl_listener *listener, void *data) {
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update_output_manager_config(output->server);
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}
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static void send_presented_iterator(struct sway_output *output,
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static void send_presented_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *box, float rotation,
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void *data) {
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struct wlr_presentation_event *event = data;
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@ -97,7 +97,7 @@ damage_finish:
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pixman_region32_fini(&damage);
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}
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static void render_surface_iterator(struct sway_output *output,
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static void render_surface_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *_box, float rotation,
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void *_data) {
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struct render_data *data = _data;
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@ -214,11 +214,11 @@ static void render_view_toplevels(struct sway_view *view,
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render_surface_iterator, &data);
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}
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static void render_popup_iterator(struct sway_output *output,
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static void render_popup_iterator(struct sway_output *output, struct sway_view *view,
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struct wlr_surface *surface, struct wlr_box *box, float rotation,
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void *data) {
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// Render this popup's surface
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render_surface_iterator(output, surface, box, rotation, data);
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render_surface_iterator(output, view, surface, box, rotation, data);
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// Render this popup's child toplevels
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output_surface_for_each_surface(output, surface, box->x, box->y,
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@ -1,4 +1,6 @@
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#define _POSIX_C_SOURCE 200112L
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#include <stdlib.h>
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#include <time.h>
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#include <wlr/types/wlr_surface.h>
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#include "sway/server.h"
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#include "sway/surface.h"
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surface->wlr_surface->data = NULL;
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wl_list_remove(&surface->destroy.link);
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wl_event_source_remove(surface->frame_done_timer);
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free(surface);
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}
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static int surface_frame_done_timer_handler(void *data) {
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struct sway_surface *surface = data;
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struct timespec now;
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clock_gettime(CLOCK_MONOTONIC, &now);
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wlr_surface_send_frame_done(surface->wlr_surface, &now);
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return 0;
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}
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void handle_compositor_new_surface(struct wl_listener *listener, void *data) {
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struct wlr_surface *wlr_surface = data;
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@ -21,4 +35,7 @@ void handle_compositor_new_surface(struct wl_listener *listener, void *data) {
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surface->destroy.notify = handle_destroy;
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wl_signal_add(&wlr_surface->events.destroy, &surface->destroy);
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surface->frame_done_timer = wl_event_loop_add_timer(server.wl_event_loop,
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surface_frame_done_timer_handler, surface);
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}
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@ -68,6 +68,7 @@ sway_sources = files(
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'commands/inhibit_idle.c',
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'commands/kill.c',
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'commands/mark.c',
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'commands/max_render_time.c',
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'commands/opacity.c',
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'commands/include.c',
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'commands/input.c',
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@ -131,6 +131,9 @@ must be separated by one space. For example:
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. Start with *max_render_time 1*. Increment by *1* if you see frame
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drops.
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To achieve even lower latency, see the *max_render_time* surface
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property in *sway*(5).
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# SEE ALSO
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*sway*(5) *sway-input*(5)
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@ -182,6 +182,22 @@ set|plus|minus <amount>
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*layout* toggle [split|tabbed|stacking|splitv|splith] [split|tabbed|stacking|splitv|splith]...
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Cycles the layout mode of the focused container through a list of layouts.
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*max_render_time* off|<msec>
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Works together with *output max_render_time* to reduce the latency even
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further by delaying the frame callbacks sent to a surface. When set to
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a positive number of milliseconds, delays the frame callback in such a
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way that the surface has the specified number of milliseconds to render
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and commit new contents before being sampled by the compositor for the
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next presentation. See *max_render_time* in *sway-output*(5) for
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further details.
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To set this up for optimal latency:
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. Set up *output max_render_time*.
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. Put the target application in _full-screen_ and have it continuously
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render something.
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. Start by setting *max_render_time 1*. If the application drops
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frames, increment by *1*.
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*move* left|right|up|down [<px> px]
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Moves the focused container in the direction specified. If the container,
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the optional _px_ argument specifies how many pixels to move the container.
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