From 14e1987f5034907a673ed31f8fa18504c9a2edd3 Mon Sep 17 00:00:00 2001 From: Alexander Orzechowski Date: Tue, 13 Aug 2024 16:44:50 -0400 Subject: [PATCH] wlr_scene: Don't special case swapchain buffers This fixes direct scanout VRR. As direct scanout buffers are not part of the swapchain, we would mistakenly union instead of subtract the damage meaning it will just accumulate indefinitely. The reason for this existing in the first place is for compositors that might want to sidestep scene and commit their own buffers to the output. In this case, scene could theoretically acknowledge that and update the damage. Except, this really didn't work because WLR_OUTPUT_STATE_DAMAGE would need to be defined which is optional. This patch also properly acknowledges commits without damage. In the use case of a weird compositor that might want to sidestep scene, they can just trash the damage ring themselves. Fixes: #3871 --- types/scene/wlr_scene.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/types/scene/wlr_scene.c b/types/scene/wlr_scene.c index d3be81977..d1d890184 100644 --- a/types/scene/wlr_scene.c +++ b/types/scene/wlr_scene.c @@ -1447,22 +1447,13 @@ static void scene_output_handle_commit(struct wl_listener *listener, void *data) // if the output has been committed with a certain damage, we know that region // will be acknowledged by the backend so we don't need to keep track of it // anymore - if (state->committed & WLR_OUTPUT_STATE_DAMAGE) { - bool tracking_buffer = false; - struct wlr_damage_ring_buffer *buffer; - wl_list_for_each(buffer, &scene_output->damage_ring.buffers, link) { - if (buffer->buffer == state->buffer) { - tracking_buffer = true; - break; - } - } - - if (tracking_buffer) { + if (state->committed & WLR_OUTPUT_STATE_BUFFER) { + if (state->committed & WLR_OUTPUT_STATE_DAMAGE) { pixman_region32_subtract(&scene_output->pending_commit_damage, &scene_output->pending_commit_damage, &state->damage); } else { - pixman_region32_union(&scene_output->pending_commit_damage, - &scene_output->pending_commit_damage, &state->damage); + pixman_region32_fini(&scene_output->pending_commit_damage); + pixman_region32_init(&scene_output->pending_commit_damage); } }