Minimal working headless output

This commit is contained in:
emersion 2017-12-17 13:35:07 +01:00
parent 3970264ccf
commit b852fb9a2b
No known key found for this signature in database
GPG Key ID: 0FDE7BE0E88F5E48
3 changed files with 51 additions and 8 deletions

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@ -26,6 +26,9 @@ static void backend_destroy(struct wlr_backend *wlr_backend) {
}
wl_list_remove(&backend->display_destroy.link);
// TODO: destroy outputs
wlr_egl_finish(&backend->egl);
free(backend);
}
@ -61,6 +64,12 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out) {
static const EGLint attribs[] = {
EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
EGL_BUFFER_SIZE, 32,
EGL_ALPHA_SIZE, 0,
EGL_BLUE_SIZE, 8,
EGL_GREEN_SIZE, 8,
EGL_RED_SIZE, 8,
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
EGL_NONE,
};
@ -146,6 +155,7 @@ struct wlr_backend *wlr_headless_backend_create(struct wl_display *display) {
}
wlr_backend_init(&backend->backend, &backend_impl);
backend->display = display;
wl_list_init(&backend->outputs);
egl_init(&backend->egl);

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@ -6,6 +6,27 @@
#include <wlr/util/log.h>
#include "backend/headless.h"
static void output_transform(struct wlr_output *wlr_output,
enum wl_output_transform transform) {
struct wlr_headless_backend_output *output =
(struct wlr_headless_backend_output *)wlr_output;
output->wlr_output.transform = transform;
}
static void output_make_current(struct wlr_output *wlr_output) {
struct wlr_headless_backend_output *output =
(struct wlr_headless_backend_output *)wlr_output;
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());
}
}
static void output_swap_buffers(struct wlr_output *wlr_output) {
// No-op
}
static void output_destroy(struct wlr_output *wlr_output) {
struct wlr_headless_backend_output *output =
(struct wlr_headless_backend_output *)wlr_output;
@ -19,13 +40,20 @@ static void output_destroy(struct wlr_output *wlr_output) {
}
static const struct wlr_output_impl output_impl = {
//.set_custom_mode = wlr_wl_output_set_custom_mode,
//.transform = wlr_wl_output_transform,
//.set_custom_mode = output_set_custom_mode,
.transform = output_transform,
.destroy = output_destroy,
//.make_current = wlr_wl_output_make_current,
//.swap_buffers = wlr_wl_output_swap_buffers,
.make_current = output_make_current,
.swap_buffers = output_swap_buffers,
};
static int signal_frame(void *data) {
struct wlr_headless_backend_output *output = data;
wl_signal_emit(&output->wlr_output.events.frame, &output->wlr_output);
wl_event_source_timer_update(output->frame_timer, 16);
return 0;
}
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};
@ -49,10 +77,15 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
wlr_log(L_ERROR, "Failed to allocate wlr_headless_backend_output");
return NULL;
}
output->backend = backend;
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);
if (output->egl_surface == EGL_NO_SURFACE) {
// TODO: cleanup
return NULL;
}
wlr_output_update_size(wlr_output, width, height);
@ -67,14 +100,13 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
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;
}
struct wl_event_loop *ev = wl_display_get_event_loop(backend->display);
output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);
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);
wl_event_source_timer_update(output->frame_timer, 16);
return wlr_output;
error:

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@ -20,6 +20,7 @@ struct wlr_headless_backend_output {
struct wl_list link;
void *egl_surface;
struct wl_event_source *frame_timer;
};
#endif