backend/drm: only keep track of local buffer

Stop keeping track of buffers on the parent GPU when multi-GPU is used.

This removes support for export_dmabuf on secondary GPUs, but renderer
v6 will bring this back by managing the swapchains in wlr_output instead
of the backends.

1 files changed, 3 insertions, 7 deletions

diff --git a/backend/drm/renderer.c b/backend/drm/renderer.c
index 2188ebf8..10280660 100644
--- a/backend/drm/renderer.c
+++ b/backend/drm/renderer.c
@@ -304,7 +304,6 @@ void drm_fb_clear(struct wlr_drm_fb **fb_ptr) {
 	}
 
 	gbm_bo_destroy(fb->bo);
-	wlr_buffer_unlock(fb->local_wlr_buf);
 	wlr_buffer_unlock(fb->wlr_buf);
 	free(fb);
 
@@ -364,18 +363,16 @@ static struct gbm_bo *get_bo_for_dmabuf(struct gbm_device *gbm,
 }
 
 static struct wlr_drm_fb *drm_fb_create(struct wlr_drm_backend *drm,
-		struct wlr_buffer *buf, struct wlr_buffer *local_buf,
-		const struct wlr_drm_format_set *formats) {
+		struct wlr_buffer *buf, const struct wlr_drm_format_set *formats) {
 	struct wlr_drm_fb *fb = calloc(1, sizeof(*fb));
 	if (!fb) {
 		return NULL;
 	}
 
 	fb->wlr_buf = wlr_buffer_lock(buf);
-	fb->local_wlr_buf = wlr_buffer_lock(local_buf);
 
 	struct wlr_dmabuf_attributes attribs;
-	if (!wlr_buffer_get_dmabuf(local_buf, &attribs)) {
+	if (!wlr_buffer_get_dmabuf(buf, &attribs)) {
 		wlr_log(WLR_ERROR, "Failed to get DMA-BUF from buffer");
 		goto error_get_dmabuf;
 	}
@@ -411,7 +408,6 @@ static struct wlr_drm_fb *drm_fb_create(struct wlr_drm_backend *drm,
 error_get_fb_for_bo:
 	gbm_bo_destroy(fb->bo);
 error_get_dmabuf:
-	wlr_buffer_unlock(fb->local_wlr_buf);
 	wlr_buffer_unlock(fb->wlr_buf);
 	free(fb);
 	return NULL;
@@ -432,7 +428,7 @@ bool drm_fb_import(struct wlr_drm_fb **fb_ptr, struct wlr_drm_backend *drm,
 		local_buf = wlr_buffer_lock(buf);
 	}
 
-	struct wlr_drm_fb *fb = drm_fb_create(drm, buf, local_buf, formats);
+	struct wlr_drm_fb *fb = drm_fb_create(drm, local_buf, formats);
 	wlr_buffer_unlock(local_buf);
 	if (!fb) {
 		return false;