backend/drm: add basic support for direct scan-out
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3dec88e455
commit
96d6fde5dc
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@ -820,6 +820,52 @@ static bool drm_connector_schedule_frame(struct wlr_output *output) {
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return true;
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}
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static bool drm_connector_set_dmabuf(struct wlr_output *output,
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struct wlr_dmabuf_attributes *attribs) {
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struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
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struct wlr_drm_backend *drm = get_drm_backend_from_backend(output->backend);
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if (!drm->session->active) {
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return false;
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}
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struct wlr_drm_crtc *crtc = conn->crtc;
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if (!crtc) {
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return false;
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}
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// TODO: check plane input formats
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if (attribs->width != output->width || attribs->height != output->height) {
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return false;
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}
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struct gbm_bo *bo = import_gbm_bo(&drm->renderer, attribs);
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if (bo == NULL) {
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wlr_log(WLR_ERROR, "import_gbm_bo failed");
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return NULL;
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}
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uint32_t fb_id = get_fb_for_bo(bo, gbm_bo_get_format(bo));
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if (fb_id == 0) {
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wlr_log(WLR_ERROR, "get_fb_for_bo failed");
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return false;
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}
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if (conn->pageflip_pending) {
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wlr_log(WLR_ERROR, "Skipping pageflip on output '%s'", conn->output.name);
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return false;
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}
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if (!drm->iface->crtc_pageflip(drm, conn, crtc, fb_id, NULL)) {
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wlr_log(WLR_ERROR, "crtc_pageflip failed");
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return false;
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}
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conn->pageflip_pending = true;
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wlr_output_update_enabled(output, true);
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return true;
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}
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static void drm_connector_destroy(struct wlr_output *output) {
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struct wlr_drm_connector *conn = get_drm_connector_from_output(output);
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drm_connector_cleanup(conn);
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@ -842,6 +888,7 @@ static const struct wlr_output_impl output_impl = {
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.get_gamma_size = drm_connector_get_gamma_size,
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.export_dmabuf = drm_connector_export_dmabuf,
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.schedule_frame = drm_connector_schedule_frame,
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.set_dmabuf = drm_connector_set_dmabuf,
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};
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bool wlr_output_is_drm(struct wlr_output *output) {
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@ -163,6 +163,30 @@ void post_drm_surface(struct wlr_drm_surface *surf) {
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}
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}
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struct gbm_bo *import_gbm_bo(struct wlr_drm_renderer *renderer,
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struct wlr_dmabuf_attributes *attribs) {
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struct gbm_import_fd_modifier_data data = {
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.width = attribs->width,
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.height = attribs->height,
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.format = attribs->format,
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.num_fds = attribs->n_planes,
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.modifier = attribs->modifier,
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};
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if ((size_t)attribs->n_planes > sizeof(data.fds) / sizeof(data.fds[0])) {
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return NULL;
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}
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for (size_t i = 0; i < (size_t)attribs->n_planes; ++i) {
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data.fds[i] = attribs->fd[i];
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data.strides[i] = attribs->stride[i];
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data.offsets[i] = attribs->offset[i];
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}
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return gbm_bo_import(renderer->gbm, GBM_BO_IMPORT_FD_MODIFIER,
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&data, GBM_BO_USE_SCANOUT);
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}
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bool export_drm_bo(struct gbm_bo *bo, struct wlr_dmabuf_attributes *attribs) {
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memset(attribs, 0, sizeof(struct wlr_dmabuf_attributes));
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@ -184,21 +184,18 @@ uint32_t get_fb_for_bo(struct gbm_bo *bo, uint32_t drm_format) {
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return id;
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}
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assert(gbm_bo_get_format(bo) == GBM_FORMAT_ARGB8888);
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assert(drm_format == DRM_FORMAT_ARGB8888 ||
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drm_format == DRM_FORMAT_XRGB8888);
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struct gbm_device *gbm = gbm_bo_get_device(bo);
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int fd = gbm_device_get_fd(gbm);
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uint32_t width = gbm_bo_get_width(bo);
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uint32_t height = gbm_bo_get_height(bo);
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uint32_t handles[4] = {gbm_bo_get_handle(bo).u32};
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uint32_t pitches[4] = {gbm_bo_get_stride(bo)};
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uint32_t strides[4] = {gbm_bo_get_stride(bo)};
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uint32_t offsets[4] = {gbm_bo_get_offset(bo, 0)};
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uint64_t modifiers[4] = {gbm_bo_get_modifier(bo)};
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if (drmModeAddFB2(fd, width, height, drm_format,
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handles, pitches, offsets, &id, 0)) {
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if (drmModeAddFB2WithModifiers(fd, width, height, drm_format,
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handles, strides, offsets, modifiers, &id, DRM_MODE_FB_MODIFIERS)) {
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wlr_log_errno(WLR_ERROR, "Unable to add DRM framebuffer");
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}
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@ -54,6 +54,8 @@ struct gbm_bo *get_drm_surface_front(struct wlr_drm_surface *surf);
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void post_drm_surface(struct wlr_drm_surface *surf);
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struct gbm_bo *copy_drm_surface_mgpu(struct wlr_drm_surface *dest,
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struct gbm_bo *src);
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struct gbm_bo *import_gbm_bo(struct wlr_drm_renderer *renderer,
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struct wlr_dmabuf_attributes *attribs);
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bool export_drm_bo(struct gbm_bo *bo, struct wlr_dmabuf_attributes *attribs);
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#endif
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@ -34,6 +34,8 @@ struct wlr_output_impl {
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bool (*export_dmabuf)(struct wlr_output *output,
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struct wlr_dmabuf_attributes *attribs);
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bool (*schedule_frame)(struct wlr_output *output);
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bool (*set_dmabuf)(struct wlr_output *output,
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struct wlr_dmabuf_attributes *attribs);
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};
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void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
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@ -243,6 +243,8 @@ bool wlr_output_preferred_read_format(struct wlr_output *output,
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*/
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void wlr_output_set_damage(struct wlr_output *output,
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pixman_region32_t *damage);
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bool wlr_output_set_dmabuf(struct wlr_output *output,
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struct wlr_dmabuf_attributes *attribs);
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/**
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* Commit the pending output state. If `wlr_output_attach_render` has been
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* called, the pending frame will be submitted for display.
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@ -478,6 +478,30 @@ bool wlr_output_commit(struct wlr_output *output) {
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return true;
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}
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bool wlr_output_set_dmabuf(struct wlr_output *output,
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struct wlr_dmabuf_attributes *attribs) {
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if (output->frame_pending) {
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wlr_log(WLR_ERROR, "Tried to swap buffers when a frame is pending");
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return false;
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}
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if (output->idle_frame != NULL) {
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wl_event_source_remove(output->idle_frame);
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output->idle_frame = NULL;
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}
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if (!output->impl->set_dmabuf) {
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return false;
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}
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if (!output->impl->set_dmabuf(output, attribs)) {
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return false;
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}
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output->frame_pending = true;
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output->needs_swap = false;
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pixman_region32_clear(&output->damage);
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return true;
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}
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void wlr_output_send_frame(struct wlr_output *output) {
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output->frame_pending = false;
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wlr_signal_emit_safe(&output->events.frame, output);
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