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backend/drm: grab DMA-BUF from wlr_buffer instead of gbm_bo 

Get the DMA-BUF directly out of the wlr_buffer instead of relying on the
gbm_bo. This eliminates a roundtrip through GBM.
This commit is contained in:
Simon Ser 2020-12-14 19:57:05 +01:00
parent 83925f04c3
commit dabd2e7207
1 changed files with 10 additions and 3 deletions
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13
backend/drm/drm.c
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@ -626,14 +626,21 @@ static bool drm_connector_export_dmabuf(struct wlr_output *output,
} }
struct wlr_drm_fb *fb = &crtc->primary->queued_fb; struct wlr_drm_fb *fb = &crtc->primary->queued_fb;
if (fb->bo == NULL) { if (fb->wlr_buf == NULL) {
fb = &crtc->primary->current_fb; fb = &crtc->primary->current_fb;
} }
if (fb->bo == NULL) { if (fb->wlr_buf == NULL) {
return false; return false;
} }
return export_drm_bo(fb->bo, attribs); // export_dmabuf gives ownership of the DMA-BUF to the caller, so we need
// to dup it
struct wlr_dmabuf_attributes buf_attribs = {0};
if (!wlr_buffer_get_dmabuf(fb->wlr_buf, &buf_attribs)) {
return false;
}
return wlr_dmabuf_attributes_copy(attribs, &buf_attribs);
} }
struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) { struct wlr_drm_fb *plane_get_next_fb(struct wlr_drm_plane *plane) {