mirror of
https://gitlab.freedesktop.org/wlroots/wlroots.git
synced 2025-11-03 09:01:40 -05:00
121 lines
2.6 KiB
C
121 lines
2.6 KiB
C
#define _POSIX_C_SOURCE 199309L
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <wayland-server.h>
|
|
#include <GLES3/gl3.h>
|
|
|
|
#include <wlr/backend/drm.h>
|
|
#include <wlr/session.h>
|
|
|
|
struct state {
|
|
float color[3];
|
|
int dec;
|
|
|
|
struct timespec last_frame;
|
|
|
|
struct wl_listener add;
|
|
struct wl_listener rem;
|
|
struct wl_listener render;
|
|
};
|
|
|
|
void output_add(struct wl_listener *listener, void *data)
|
|
{
|
|
struct wlr_drm_output *out = data;
|
|
|
|
size_t num_modes;
|
|
struct wlr_drm_mode *modes = wlr_drm_output_get_modes(out, &num_modes);
|
|
|
|
wlr_drm_output_modeset(out, &modes[0]);
|
|
}
|
|
|
|
void output_rem(struct wl_listener *listener, void *data)
|
|
{
|
|
fprintf(stderr, "Output removed\n");
|
|
}
|
|
|
|
void output_render(struct wl_listener *listener, void *data)
|
|
{
|
|
struct wlr_drm_output *out = data;
|
|
struct state *s = wl_container_of(listener, s, render);
|
|
|
|
struct timespec now;
|
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
|
|
|
long ms = (now.tv_sec - s->last_frame.tv_sec) * 1000 +
|
|
(now.tv_nsec - s->last_frame.tv_nsec) / 1000000;
|
|
int inc = (s->dec + 1) % 3;
|
|
|
|
s->color[inc] += ms / 2000.0f;
|
|
s->color[s->dec] -= ms / 2000.0f;
|
|
|
|
if (s->color[s->dec] < 0.0f) {
|
|
s->color[inc] = 1.0f;
|
|
s->color[s->dec] = 0.0f;
|
|
|
|
s->dec = inc;
|
|
}
|
|
|
|
s->last_frame = now;
|
|
|
|
wlr_drm_output_begin(out);
|
|
|
|
glClearColor(s->color[0], s->color[1], s->color[2], 1.0);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
wlr_drm_output_end(out);
|
|
}
|
|
|
|
int timer_done(void *data)
|
|
{
|
|
*(bool *)data = true;
|
|
return 1;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
if (getenv("DISPLAY")) {
|
|
fprintf(stderr, "Detected that X is running. Run this in its own virtual terminal.\n");
|
|
return 1;
|
|
} else if (getenv("WAYLAND_DISPLAY")) {
|
|
fprintf(stderr, "Detected that Wayland is running. Run this in its own virtual terminal.\n");
|
|
return 1;
|
|
}
|
|
|
|
struct state state = {
|
|
.color = { 1.0, 0.0, 0.0 },
|
|
.dec = 0,
|
|
.add = { .notify = output_add },
|
|
.rem = { .notify = output_rem },
|
|
.render = { .notify = output_render },
|
|
};
|
|
|
|
wl_list_init(&state.add.link);
|
|
wl_list_init(&state.rem.link);
|
|
wl_list_init(&state.render.link);
|
|
clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
|
|
|
|
struct wl_display *display = wl_display_create();
|
|
struct wl_event_loop *event_loop = wl_display_get_event_loop(display);
|
|
|
|
struct wlr_session *session = wlr_session_start();
|
|
if (!session) {
|
|
return 1;
|
|
}
|
|
|
|
struct wlr_drm_backend *wlr = wlr_drm_backend_init(display, session,
|
|
&state.add, &state.rem, &state.render);
|
|
|
|
bool done = false;
|
|
struct wl_event_source *timer = wl_event_loop_add_timer(event_loop,
|
|
timer_done, &done);
|
|
|
|
wl_event_source_timer_update(timer, 10000);
|
|
|
|
while (!done)
|
|
wl_event_loop_dispatch(event_loop, 0);
|
|
|
|
wl_event_source_remove(timer);
|
|
wlr_drm_backend_free(wlr);
|
|
wl_display_destroy(display);
|
|
}
|