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backend/drm: add basic support for direct scan-out

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emersion 2019-03-29 21:27:12 +02:00 • committed by Drew DeVault
parent 3dec88e455
commit 96d6fde5dc
7 changed files with 105 additions and 7 deletions
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47
backend/drm/drm.c
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@ -820,6 +820,52 @@ static bool drm_connector_schedule_frame(struct wlr_output *output) {
return true;
}
static bool drm_connector_set_dmabuf(struct wlr_output *output,
struct wlr_dmabuf_attributes *attribs) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
if (!drm->session->active) {
return false;
}
struct wlr_drm_crtc *crtc = conn->crtc;
if (!crtc) {
return false;
}
// TODO: check plane input formats
if (attribs->width != output->width || attribs->height != output->height) {
return false;
}
struct gbm_bo *bo = import_gbm_bo(&drm->renderer, attribs);
if (bo == NULL) {
wlr_log(WLR_ERROR, "import_gbm_bo failed");
return NULL;
}
uint32_t fb_id = get_fb_for_bo(bo, gbm_bo_get_format(bo));
if (fb_id == 0) {
wlr_log(WLR_ERROR, "get_fb_for_bo failed");
return false;
}
if (conn->pageflip_pending) {
wlr_log(WLR_ERROR, "Skipping pageflip on output '%s'", conn->output.name);
return false;
}
if (!drm->iface->crtc_pageflip(drm, conn, crtc, fb_id, NULL)) {
wlr_log(WLR_ERROR, "crtc_pageflip failed");
return false;
}
conn->pageflip_pending = true;
wlr_output_update_enabled(output, true);
return true;
}
static void drm_connector_destroy(struct wlr_output *output) {
struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
drm_connector_cleanup(conn);
@ -842,6 +888,7 @@ static const struct wlr_output_impl output_impl = {
.get_gamma_size = drm_connector_get_gamma_size,
.export_dmabuf = drm_connector_export_dmabuf,
.schedule_frame = drm_connector_schedule_frame,
.set_dmabuf = drm_connector_set_dmabuf,
};
bool wlr_output_is_drm(struct wlr_output *output) {