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backend/drm: try to import buffer when testing it 

If the import to KMS succeeds, we have a better chance to be able to
scan it out.

Importing is also necessary for test-only commits, which we want to
add in the future.
This commit is contained in:
Simon Ser 2021-04-01 21:08:21 +02:00
parent b514d4afe2
commit 511e42be5e
1 changed files with 3 additions and 21 deletions
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24
backend/drm/drm.c
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@ -399,29 +399,11 @@ static bool test_buffer(struct wlr_drm_connector *conn,
return false;
}
struct wlr_dmabuf_attributes attribs;
if (!wlr_buffer_get_dmabuf(wlr_buffer, &attribs)) {
struct wlr_drm_fb *fb = NULL;
if (!drm_fb_import(&fb, drm, wlr_buffer, &crtc->primary->formats)) {
return false;
}
if (attribs.flags != 0) {
return false;
}
if (!wlr_drm_format_set_has(&crtc->primary->formats,
attribs.format, attribs.modifier)) {
// The format isn't supported by the plane. Try stripping the alpha
// channel, if any.
const struct wlr_pixel_format_info *info =
drm_get_pixel_format_info(attribs.format);
if (info != NULL && info->opaque_substitute != DRM_FORMAT_INVALID &&
wlr_drm_format_set_has(&crtc->primary->formats,
info->opaque_substitute, attribs.modifier)) {
attribs.format = info->opaque_substitute;
} else {
return false;
}
}
drm_fb_clear(&fb);
return true;
}