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renderer: Don't crash when trying to fallback to pixman 

Pixman won't be chosen by default if the system has a valid render node
but gles2 and vulkan creation failed.
This commit is contained in:
Alexander Orzechowski 2023-10-05 05:14:54 -04:00
parent 4f92ecde82
commit d817ebb80f
1 changed files with 18 additions and 9 deletions
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27
render/wlr_renderer.c
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@ -346,6 +346,23 @@ static void log_creation_failure(bool is_auto, const char *msg) {
wlr_log(is_auto ? WLR_DEBUG : WLR_ERROR, "%s%s", msg, is_auto ? ". Skipping!" : "");
}
static bool has_render_node(struct wlr_backend *backend) {
if (!backend) {
return false;
}
int backend_drm_fd = wlr_backend_get_drm_fd(backend);
if (backend_drm_fd < 0) {
return false;
}
char *render_node = drmGetRenderDeviceNameFromFd(backend_drm_fd);
bool has_render_node = render_node != NULL;
free(render_node);
return has_render_node;
}
static struct wlr_renderer *renderer_autocreate(struct wlr_backend *backend, int drm_fd) {
const char *renderer_options[] = {
"auto",
@ -396,15 +413,7 @@ static struct wlr_renderer *renderer_autocreate(struct wlr_backend *backend, int
}
#endif
bool has_render_node = false;
int backend_drm_fd = wlr_backend_get_drm_fd(backend);
if (is_auto && backend_drm_fd >= 0) {
char *render_node = drmGetRenderDeviceNameFromFd(backend_drm_fd);
has_render_node = render_node != NULL;
free(render_node);
}
if ((is_auto && !has_render_node) || strcmp(renderer_name, "pixman") == 0) {
if ((is_auto && !has_render_node(backend)) || strcmp(renderer_name, "pixman") == 0) {
renderer = wlr_pixman_renderer_create();
if (renderer) {
goto out;