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backend-x11: Prepare for more renderers, reject no-op 

Turn the Pixman/GL if/else conditionals into switch cases to make it
easier to add support for others renderer in the future.

Also makes sure that weston --backend=x11 --renderer=noop fails
with an error message instead of starting with the GL renderer.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Philipp Zabel 2023-06-19 08:39:53 +02:00 committed by Daniel Stone
parent c61719e9e9
commit d46b491c83
1 changed files with 26 additions and 7 deletions
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33
libweston/backend-x11/x11.c
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@ -906,11 +906,16 @@ x11_output_disable(struct weston_output *base)
wl_event_source_remove(output->finish_frame_timer);
if (renderer->type == WESTON_RENDERER_PIXMAN) {
switch (renderer->type) {
case WESTON_RENDERER_PIXMAN:
x11_output_deinit_shm(backend, output);
renderer->pixman->output_destroy(&output->base);
} else {
break;
case WESTON_RENDERER_GL:
renderer->gl->output_destroy(&output->base);
break;
default:
unreachable("invalid renderer");
}
xcb_destroy_window(backend->conn, output->window);
@ -1041,7 +1046,8 @@ x11_output_enable(struct weston_output *base)
if (b->fullscreen)
x11_output_wait_for_map(b, output);
if (renderer->type == WESTON_RENDERER_PIXMAN) {
switch (renderer->type) {
case WESTON_RENDERER_PIXMAN: {
const struct pixman_renderer_output_options options = {
.use_shadow = true,
.fb_size = {
@ -1064,7 +1070,9 @@ x11_output_enable(struct weston_output *base)
}
output->base.repaint = x11_output_repaint_shm;
} else {
break;
}
case WESTON_RENDERER_GL: {
/* eglCreatePlatformWindowSurfaceEXT takes a Window*
* but eglCreateWindowSurface takes a Window. */
Window xid = (Window) output->window;
@ -1086,6 +1094,10 @@ x11_output_enable(struct weston_output *base)
goto err;
output->base.repaint = x11_output_repaint_gl;
break;
}
default:
unreachable("invalid renderer");
}
output->base.start_repaint_loop = x11_output_start_repaint_loop;
@ -1905,15 +1917,17 @@ x11_backend_create(struct weston_compositor *compositor,
b->formats_count = ARRAY_LENGTH(x11_formats);
b->formats = pixel_format_get_array(x11_formats, b->formats_count);
if (config->renderer == WESTON_RENDERER_PIXMAN) {
switch (config->renderer) {
case WESTON_RENDERER_PIXMAN:
if (weston_compositor_init_renderer(compositor,
WESTON_RENDERER_PIXMAN,
NULL) < 0) {
weston_log("Failed to initialize pixman renderer for X11 backend\n");
goto err_xdisplay;
}
}
else {
break;
case WESTON_RENDERER_AUTO:
case WESTON_RENDERER_GL: {
const struct gl_renderer_display_options options = {
.egl_platform = EGL_PLATFORM_X11_KHR,
.egl_native_display = b->dpy,
@ -1925,6 +1939,11 @@ x11_backend_create(struct weston_compositor *compositor,
WESTON_RENDERER_GL,
&options.base) < 0)
goto err_xdisplay;
break;
}
default:
weston_log("Unsupported renderer requested\n");
goto err_xdisplay;
}
b->base.shutdown = x11_shutdown;