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#include <EGL/egl.h>
#include <stdio.h>
#include "./state.h"
#include "wlr-layer-shell-unstable-v1.h"
extern struct wl_registry_listener registry_listener;
extern struct zwlr_layer_surface_v1_listener layer_surface_listener;
bool init_gl(client_state* state) {
EGLint attrs[] = {
EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
EGL_CONFORMANT, EGL_OPENGL_BIT,
EGL_RED_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_BLUE_SIZE, 8,
EGL_ALPHA_SIZE, 8,
EGL_DEPTH_SIZE, 24,
EGL_NONE
};
state->egl_window = wl_egl_window_create(state->surface, state->width, state->height);
if (!state->egl_window) {
fprintf(stderr, "ewindow\n");
return false;
}
state->egl_display = eglGetDisplay(state->display);
if (state->egl_display == EGL_NO_DISPLAY) {
fprintf(stderr, "edisplay\n");
return false;
}
{
EGLint major, minor;
if (eglInitialize(state->egl_display, &major, &minor) != EGL_TRUE) {
fprintf(stderr, "eglinit\n");
return false;
}
printf("EGL version %u.%u\n", major, minor);
}
eglBindAPI(EGL_OPENGL_API);
EGLint num_configs;
if (eglChooseConfig(state->egl_display, attrs, &state->egl_config, 1, &num_configs) != EGL_TRUE) {
fprintf(stderr, "econfig: %d\n", eglGetError());
return false;
}
state->egl_surface = eglCreateWindowSurface(state->egl_display, state->egl_config,
(EGLNativeWindowType)state->egl_window, NULL);
if (state->egl_surface == EGL_NO_SURFACE) {
fprintf(stderr, "esurface\n");
return false;
}
state->egl_context = eglCreateContext(state->egl_display, state->egl_config,
EGL_NO_CONTEXT, NULL);
if (state->egl_context == EGL_NO_CONTEXT) {
fprintf(stderr, "econtext: %x\n", eglGetError());
return false;
}
eglMakeCurrent(state->egl_display, state->egl_surface, state->egl_surface, state->egl_context);
if (!gladLoadGL()) {
fprintf(stderr, "gladLoadGL");
return false;
}
{
GLint major, minor;
glGetIntegerv(GL_MAJOR_VERSION, &major);
glGetIntegerv(GL_MINOR_VERSION, &minor);
printf("GL version %u.%u\n", major, minor);
}
return true;
}
int main() {
client_state state = {0};
state.running = true;
state.display = wl_display_connect(NULL);
if (!state.display) {
fprintf(stderr, "Failed to Connect to wayland display\n");
return 0;
}
state.registry = wl_display_get_registry(state.display);
wl_registry_add_listener(state.registry, ®istry_listener, &state);
wl_display_roundtrip(state.display);
state.surface = wl_compositor_create_surface(state.compositor);
state.layer_surface = zwlr_layer_shell_v1_get_layer_surface(
state.layer_shell, state.surface, NULL,
ZWLR_LAYER_SHELL_V1_LAYER_TOP, "swenu");
zwlr_layer_surface_v1_add_listener(state.layer_surface, &layer_surface_listener, &state);
zwlr_layer_surface_v1_set_size(state.layer_surface, 600, 400);
zwlr_layer_surface_v1_set_anchor(state.layer_surface, ZWLR_LAYER_SURFACE_V1_ANCHOR_TOP |
ZWLR_LAYER_SURFACE_V1_ANCHOR_BOTTOM |
ZWLR_LAYER_SURFACE_V1_ANCHOR_LEFT |
ZWLR_LAYER_SURFACE_V1_ANCHOR_RIGHT);
zwlr_layer_surface_v1_set_exclusive_zone(state.layer_surface, -1);
zwlr_layer_surface_v1_set_margin(state.layer_surface, 0, 0, 0, 0);
zwlr_layer_surface_v1_set_keyboard_interactivity(state.layer_surface, ZWLR_LAYER_SURFACE_V1_KEYBOARD_INTERACTIVITY_EXCLUSIVE);
wl_surface_commit(state.surface);
wl_display_roundtrip(state.display);
if (!init_gl(&state)) {
fprintf(stderr, "Failed to Initalize EGL/OpenGL\n");
return 1;
}
while (state.running) {
wl_display_dispatch_pending(state.display);
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
eglSwapBuffers(state.egl_display, state.egl_surface);
}
}
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