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examples: add render-pass-ext exmaple
This commit is contained in:
YaoBing Xiao
parent
53630a0a60
commit
393f96274a
14 changed files with 705 additions and 0 deletions
206
examples/render-pass-ext/render-pass-ext.c
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206
examples/render-pass-ext/render-pass-ext.c
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#include <stdlib.h>
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#include <wayland-server-core.h>
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#include <wlr/backend.h>
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#include <wlr/config.h>
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#include <wlr/render/allocator.h>
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#include <wlr/types/wlr_input_device.h>
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#include <wlr/types/wlr_keyboard.h>
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#include <wlr/types/wlr_output.h>
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#include <wlr/util/log.h>
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#include <xkbcommon/xkbcommon.h>
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#include "triangle_pass.h"
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struct sample_state {
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struct wl_display *display;
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struct wl_listener new_output;
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struct wl_listener new_input;
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struct wl_listener renderer_destroy;
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struct wlr_renderer *renderer;
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struct wlr_allocator *allocator;
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};
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struct sample_output {
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struct sample_state *sample;
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struct wlr_output *output;
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struct wl_listener frame;
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struct wl_listener destroy;
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};
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struct sample_keyboard {
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struct sample_state *sample;
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struct wlr_keyboard *wlr_keyboard;
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struct wl_listener key;
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struct wl_listener destroy;
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};
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static void output_frame_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output =
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wl_container_of(listener, sample_output, frame);
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struct wlr_output *wlr_output = sample_output->output;
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struct wlr_output_state state;
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wlr_output_state_init(&state);
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struct wlr_render_pass *pass =
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wlr_output_begin_render_pass(wlr_output, &state, NULL);
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int size = wlr_output->height < wlr_output->width ?
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(wlr_output->height * 3) / 4 : (wlr_output->width * 3) / 4;
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struct wlr_box triangle_box = {
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.x = (wlr_output->width - size) / 2,
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.y = (wlr_output->height - size) / 2,
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.width = size,
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.height = size,
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};
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render_triangle_pass_add(pass,
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&(struct custom_render_triangle_options){
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.box = triangle_box,
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});
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wlr_render_pass_submit(pass);
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wlr_output_commit_state(wlr_output, &state);
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wlr_output_state_finish(&state);
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}
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static void output_remove_notify(struct wl_listener *listener, void *data) {
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struct sample_output *sample_output =
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wl_container_of(listener, sample_output, destroy);
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wlr_log(WLR_DEBUG, "Output removed");
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wl_list_remove(&sample_output->frame.link);
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wl_list_remove(&sample_output->destroy.link);
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free(sample_output);
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}
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static void new_output_notify(struct wl_listener *listener, void *data) {
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struct wlr_output *output = data;
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struct sample_state *sample =
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wl_container_of(listener, sample, new_output);
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wlr_output_init_render(output, sample->allocator, sample->renderer);
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sample->renderer->data = get_or_create_render_triangle_pass(sample->renderer);
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struct sample_output *sample_output = calloc(1, sizeof(*sample_output));
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sample_output->output = output;
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sample_output->sample = sample;
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wl_signal_add(&output->events.frame, &sample_output->frame);
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sample_output->frame.notify = output_frame_notify;
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wl_signal_add(&output->events.destroy, &sample_output->destroy);
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sample_output->destroy.notify = output_remove_notify;
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struct wlr_output_state state;
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wlr_output_state_init(&state);
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wlr_output_state_set_enabled(&state, true);
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struct wlr_output_mode *mode = wlr_output_preferred_mode(output);
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if (mode != NULL) {
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wlr_output_state_set_mode(&state, mode);
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}
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wlr_output_commit_state(output, &state);
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wlr_output_state_finish(&state);
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}
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static void keyboard_key_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, key);
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struct sample_state *sample = keyboard->sample;
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struct wlr_keyboard_key_event *event = data;
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uint32_t keycode = event->keycode + 8;
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const xkb_keysym_t *syms;
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int nsyms = xkb_state_key_get_syms(keyboard->wlr_keyboard->xkb_state,
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keycode, &syms);
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for (int i = 0; i < nsyms; i++) {
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xkb_keysym_t sym = syms[i];
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if (sym == XKB_KEY_Escape) {
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wl_display_terminate(sample->display);
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}
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}
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}
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static void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
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struct sample_keyboard *keyboard =
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wl_container_of(listener, keyboard, destroy);
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wl_list_remove(&keyboard->destroy.link);
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wl_list_remove(&keyboard->key.link);
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free(keyboard);
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}
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static void new_input_notify(struct wl_listener *listener, void *data) {
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struct wlr_input_device *device = data;
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struct sample_state *sample = wl_container_of(listener, sample, new_input);
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switch (device->type) {
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case WLR_INPUT_DEVICE_KEYBOARD:;
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struct sample_keyboard *keyboard = calloc(1, sizeof(*keyboard));
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keyboard->wlr_keyboard = wlr_keyboard_from_input_device(device);
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keyboard->sample = sample;
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wl_signal_add(&device->events.destroy, &keyboard->destroy);
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keyboard->destroy.notify = keyboard_destroy_notify;
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wl_signal_add(&keyboard->wlr_keyboard->events.key, &keyboard->key);
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keyboard->key.notify = keyboard_key_notify;
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struct xkb_context *context = xkb_context_new(XKB_CONTEXT_NO_FLAGS);
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if (!context) {
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wlr_log(WLR_ERROR, "Failed to create XKB context");
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exit(1);
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}
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struct xkb_keymap *keymap = xkb_keymap_new_from_names(context, NULL,
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XKB_KEYMAP_COMPILE_NO_FLAGS);
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if (!keymap) {
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wlr_log(WLR_ERROR, "Failed to create XKB keymap");
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exit(1);
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}
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wlr_keyboard_set_keymap(keyboard->wlr_keyboard, keymap);
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xkb_keymap_unref(keymap);
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xkb_context_unref(context);
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break;
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default:
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break;
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}
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}
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static void renderer_destroy_notify(struct wl_listener *listener, void *data) {
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struct sample_state *sample = wl_container_of(listener, sample, renderer_destroy);
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render_triangle_pass_destroy(sample->renderer->data);
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}
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int main(void) {
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wlr_log_init(WLR_DEBUG, NULL);
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struct wl_display *display = wl_display_create();
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struct sample_state state = {
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.display = display,
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};
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struct wlr_backend *backend = wlr_backend_autocreate(
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wl_display_get_event_loop(display), NULL);
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if (backend == NULL) {
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return 1;
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}
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state.renderer = wlr_renderer_autocreate(backend);
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if (state.renderer == NULL) {
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wlr_log(WLR_ERROR, "Failed to create renderer");
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wlr_backend_destroy(backend);
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return 1;
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}
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wl_signal_add(&state.renderer->events.destroy, &state.renderer_destroy);
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state.renderer_destroy.notify = renderer_destroy_notify;
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state.allocator = wlr_allocator_autocreate(backend, state.renderer);
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if (state.allocator == NULL) {
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wlr_log(WLR_ERROR, "Failed to create allocator");
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wlr_backend_destroy(backend);
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return 1;
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}
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wl_signal_add(&backend->events.new_output, &state.new_output);
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state.new_output.notify = new_output_notify;
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wl_signal_add(&backend->events.new_input, &state.new_input);
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state.new_input.notify = new_input_notify;
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if (!wlr_backend_start(backend)) {
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wlr_log(WLR_ERROR, "Failed to start backend");
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wlr_backend_destroy(backend);
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return 1;
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}
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wl_display_run(display);
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wl_display_destroy(display);
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return 0;
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}
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