diff options
| -rw-r--r-- | examples/meson.build | 3 | ||||
| -rw-r--r-- | examples/quads.c | 212 |
2 files changed, 215 insertions, 0 deletions
diff --git a/examples/meson.build b/examples/meson.build index 0fee7d92..1ce02f0d 100644 --- a/examples/meson.build +++ b/examples/meson.build @@ -49,6 +49,9 @@ compositors = { 'src': 'fullscreen-shell.c', 'proto': ['fullscreen-shell-unstable-v1'], }, + 'quads': { + 'src': 'quads.c', + }, } clients = { diff --git a/examples/quads.c b/examples/quads.c new file mode 100644 index 00000000..8745706e --- /dev/null +++ b/examples/quads.c @@ -0,0 +1,212 @@ +#define _XOPEN_SOURCE 600 +#include <getopt.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <strings.h> +#include <time.h> +#include <unistd.h> +#include <wayland-server-core.h> +#include <wlr/backend.h> +#include <wlr/render/wlr_renderer.h> +#include <wlr/types/wlr_keyboard.h> +#include <wlr/types/wlr_output.h> +#include <wlr/types/wlr_input_device.h> +#include <wlr/types/wlr_matrix.h> +#include <wlr/util/log.h> +#include <xkbcommon/xkbcommon.h> + +struct sample_state { + struct wl_display *display; + struct wl_listener new_output; + struct wl_listener new_input; + struct timespec last_frame; + struct wlr_renderer *renderer; + struct wl_list outputs; +}; + +struct sample_output { + struct sample_state *sample; + struct wlr_output *output; + struct wl_listener frame; + struct wl_listener destroy; + struct wl_list link; +}; + +struct sample_keyboard { + struct sample_state *sample; + struct wlr_input_device *device; + struct wl_listener key; + struct wl_listener destroy; +}; + +static void output_frame_notify(struct wl_listener *listener, void *data) { + struct sample_output *sample_output = wl_container_of(listener, sample_output, frame); + struct sample_state *sample = sample_output->sample; + struct wlr_output *wlr_output = sample_output->output; + struct timespec now; + clock_gettime(CLOCK_MONOTONIC, &now); + + int32_t width, height; + wlr_output_effective_resolution(wlr_output, &width, &height); + + wlr_output_attach_render(wlr_output, NULL); + wlr_renderer_begin(sample->renderer, wlr_output->width, wlr_output->height); + wlr_renderer_clear(sample->renderer, (float[]){0.25f, 0.25f, 0.25f, 1}); + + static float rotation = 0.f; + for (int y = -128; y < height; y += 128) { + for (int x = -128; x < width; x += 128) { + struct wlr_box box = { + .x = x, + .y = y, + .width = 128, + .height = 128, + }; + + float color[] = { + 255.f / x, + 255.f / y, + 255.f / (x + y), + 1.f + }; + + float matrix[9]; + wlr_matrix_project_box(matrix, &box, WL_OUTPUT_TRANSFORM_NORMAL, + rotation, wlr_output->transform_matrix); + + wlr_render_quad_with_matrix(sample->renderer, color, matrix); + } + } + + wlr_renderer_end(sample->renderer); + wlr_output_commit(wlr_output); + + //TODO rotate with a delta time + rotation += 0.05; + if (rotation > 2 * M_PI) { + rotation = 0.f; + } + + sample->last_frame = now; +} + +static void output_remove_notify(struct wl_listener *listener, void *data) { + struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy); + wl_list_remove(&sample_output->frame.link); + wl_list_remove(&sample_output->destroy.link); + free(sample_output); +} + +static void new_output_notify(struct wl_listener *listener, void *data) { + struct wlr_output *output = data; + struct sample_state *sample = wl_container_of(listener, sample, new_output); + struct sample_output *sample_output = calloc(1, sizeof(struct sample_output)); + + struct wlr_output_mode *mode = wlr_output_preferred_mode(output); + if (mode != NULL) { + wlr_output_set_mode(output, mode); + } + + sample_output->output = output; + sample_output->sample = sample; + wl_signal_add(&output->events.frame, &sample_output->frame); + sample_output->frame.notify = output_frame_notify; + wl_signal_add(&output->events.destroy, &sample_output->destroy); + sample_output->destroy.notify = output_remove_notify; + wl_list_insert(&sample->outputs, &sample_output->link); + + wlr_output_commit(output); +} + +static void keyboard_key_notify(struct wl_listener *listener, void *data) { + struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, key); + struct sample_state *sample = keyboard->sample; + struct wlr_event_keyboard_key *event = data; + uint32_t keycode = event->keycode + 8; + const xkb_keysym_t *syms; + int nsyms = xkb_state_key_get_syms(keyboard->device->keyboard->xkb_state, + keycode, &syms); + for (int i = 0; i < nsyms; i++) { + xkb_keysym_t sym = syms[i]; + if (sym == XKB_KEY_Escape) { + wl_display_terminate(sample->display); + } + } +} + +static void keyboard_destroy_notify(struct wl_listener *listener, void *data) { + struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy); + wl_list_remove(&keyboard->destroy.link); + wl_list_remove(&keyboard->key.link); + free(keyboard); +} + +static void new_input_notify(struct wl_listener *listener, void *data) { + struct wlr_input_device *device = data; + struct sample_state *sample = wl_container_of(listener, sample, new_input); + switch (device->type) { + case WLR_INPUT_DEVICE_KEYBOARD:; + struct sample_keyboard *keyboard = calloc(1, sizeof(struct sample_keyboard)); + keyboard->device = device; + keyboard->sample = sample; + wl_signal_add(&device->events.destroy, &keyboard->destroy); + keyboard->destroy.notify = keyboard_destroy_notify; + wl_signal_add(&device->keyboard->events.key, &keyboard->key); + keyboard->key.notify = keyboard_key_notify; + struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS); + if (!context) { + wlr_log(WLR_ERROR, "Failed to create XKB context"); + exit(1); + } + struct xkb_keymap *keymap = xkb_map_new_from_names(context, NULL, + XKB_KEYMAP_COMPILE_NO_FLAGS); + if (!keymap) { + wlr_log(WLR_ERROR, "Failed to create XKB keymap"); + exit(1); + } + wlr_keyboard_set_keymap(device->keyboard, keymap); + xkb_keymap_unref(keymap); + xkb_context_unref(context); + break; + default: + break; + } +} + +int main(int argc, char *argv[]) { + wlr_log_init(WLR_DEBUG, NULL); + struct wl_display *display = wl_display_create(); + struct sample_state state = { + .display = display, + }; + wl_list_init(&state.outputs); + + struct wlr_backend *wlr = wlr_backend_autocreate(display); + if (!wlr) { + exit(1); + } + + wl_signal_add(&wlr->events.new_output, &state.new_output); + state.new_output.notify = new_output_notify; + wl_signal_add(&wlr->events.new_input, &state.new_input); + state.new_input.notify = new_input_notify; + clock_gettime(CLOCK_MONOTONIC, &state.last_frame); + + state.renderer = wlr_backend_get_renderer(wlr); + if (!state.renderer) { + wlr_log(WLR_ERROR, "Could not start compositor, OOM"); + wlr_backend_destroy(wlr); + exit(EXIT_FAILURE); + } + + if (!wlr_backend_start(wlr)) { + wlr_log(WLR_ERROR, "Failed to start backend"); + wlr_backend_destroy(wlr); + exit(1); + } + wl_display_run(display); + + wl_display_destroy(display); +} |