mirrors/wlroots
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/wlroots/wlroots.git synced 2025-11-05 13:29:47 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Initialize headless backend

Browse source
This commit is contained in:
emersion 2017-12-17 12:56:42 +01:00
parent 3363ea869a
commit 3970264ccf
No known key found for this signature in database
GPG key ID: 0FDE7BE0E88F5E48
6 changed files with 282 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

83
backend/headless/output.c Normal file
View file

@ -0,0 +1,83 @@
#include <stdlib.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include <GLES2/gl2.h>
#include <wlr/interfaces/wlr_output.h>
#include <wlr/util/log.h>
#include "backend/headless.h"
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_headless_backend_output *output =
(struct wlr_headless_backend_output *)wlr_output;
wl_signal_emit(&output->backend->backend.events.output_remove,
&output->wlr_output);
wl_list_remove(&output->link);
eglDestroySurface(output->backend->egl.display, output->egl_surface);
free(output);
}
static const struct wlr_output_impl output_impl = {
//.set_custom_mode = wlr_wl_output_set_custom_mode,
//.transform = wlr_wl_output_transform,
.destroy = output_destroy,
//.make_current = wlr_wl_output_make_current,
//.swap_buffers = wlr_wl_output_swap_buffers,
};
static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
unsigned int height) {
EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
if (surf == EGL_NO_SURFACE) {
wlr_log(L_ERROR, "Failed to create EGL surface: %s", egl_error());
return EGL_NO_SURFACE;
}
return surf;
}
struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
unsigned int width, unsigned int height) {
struct wlr_headless_backend *backend =
(struct wlr_headless_backend *)wlr_backend;
struct wlr_headless_backend_output *output =
calloc(1, sizeof(struct wlr_headless_backend_output));
if (output == NULL) {
wlr_log(L_ERROR, "Failed to allocate wlr_headless_backend_output");
return NULL;
}
wlr_output_init(&output->wlr_output, &backend->backend, &output_impl);
struct wlr_output *wlr_output = &output->wlr_output;
output->egl_surface = egl_create_surface(&backend->egl, width, height);
wlr_output_update_size(wlr_output, width, height);
if (!eglMakeCurrent(output->backend->egl.display,
output->egl_surface, output->egl_surface,
output->backend->egl.context)) {
wlr_log(L_ERROR, "eglMakeCurrent failed: %s", egl_error());
goto error;
}
glViewport(0, 0, wlr_output->width, wlr_output->height);
glClearColor(1.0, 1.0, 1.0, 1.0);
glClear(GL_COLOR_BUFFER_BIT);
if (!eglSwapBuffers(output->backend->egl.display, output->egl_surface)) {
wlr_log(L_ERROR, "eglSwapBuffers failed: %s", egl_error());
goto error;
}
wl_list_insert(&backend->outputs, &output->link);
wlr_output_create_global(wlr_output, backend->display);
wl_signal_emit(&backend->backend.events.output_add, wlr_output);
return wlr_output;
error:
wlr_output_destroy(&output->wlr_output);
return NULL;
}