diff options
Diffstat (limited to 'meta-agl-core/recipes-graphics/wayland/weston')
| -rw-r--r-- | meta-agl-core/recipes-graphics/wayland/weston/0001-backend-drm-make-sure-all-buffers-are-released-when-.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/meta-agl-core/recipes-graphics/wayland/weston/0001-backend-drm-make-sure-all-buffers-are-released-when-.patch b/meta-agl-core/recipes-graphics/wayland/weston/0001-backend-drm-make-sure-all-buffers-are-released-when-.patch new file mode 100644 index 000000000..940088f5c --- /dev/null +++ b/meta-agl-core/recipes-graphics/wayland/weston/0001-backend-drm-make-sure-all-buffers-are-released-when-.patch @@ -0,0 +1,68 @@ +From 6d9e9dfa0479abc0ed7921a4ebf42228c0da7533 Mon Sep 17 00:00:00 2001 +From: Michael Olbrich <m.olbrich@pengutronix.de> +Date: Wed, 22 Jun 2022 08:58:21 +0200 +Subject: [PATCH] backend-drm: make sure all buffers are released when an + output is removed + +When an output is destroyed then the output state is freed immediately. In this +case, the plane state is only partially destroyed because it is the currently +active state. This includes the buffer reference. + +Without the output, the plane will not be updated any more until it is used by a +different output (if possible) or the output returns and the plane is used +again. +As a result, the buffer reference is kept for a long time. This will cause some +applications to stall because weston now keeps two buffers (the one here and +another one for a different output where the application is now displayed). + +To avoid this, do a synchronous commit that disables the output. The output +needs to be disabled anyways and this way the current state contains no +buffers that would remain. + +`device->state_invalid = true` in drm_output_detach_crtc() is no longer +needed, because drm_output_detach_crtc() is called only when initialization +failed and the crtc was not yet used or in drm_output_deinit() when the +crtc was already disabled with the new synchronous commit. + +Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de> +(cherry picked from commit f5a4fb5abcb8aeb6b078b6235834cc4ab6176c26) +--- + libweston/backend-drm/drm.c | 10 +++++++--- + 1 file changed, 7 insertions(+), 3 deletions(-) + +diff --git a/libweston/backend-drm/drm.c b/libweston/backend-drm/drm.c +index 42787702..8425b0e9 100644 +--- a/libweston/backend-drm/drm.c ++++ b/libweston/backend-drm/drm.c +@@ -1769,14 +1769,11 @@ drm_output_attach_crtc(struct drm_output *output) + static void + drm_output_detach_crtc(struct drm_output *output) + { +- struct drm_backend *b = output->backend; + struct drm_crtc *crtc = output->crtc; + + crtc->output = NULL; + output->crtc = NULL; + +- /* Force resetting unused CRTCs */ +- b->state_invalid = true; + } + + static int +@@ -1839,6 +1836,13 @@ drm_output_deinit(struct weston_output *base) + { + struct drm_output *output = to_drm_output(base); + struct drm_backend *b = to_drm_backend(base->compositor); ++ struct drm_pending_state *pending; ++ ++ if (!b->shutting_down) { ++ pending = drm_pending_state_alloc(b); ++ drm_output_get_disable_state(pending, output); ++ drm_pending_state_apply_sync(pending); ++ } + + if (b->use_pixman) + drm_output_fini_pixman(output); +-- +2.39.2 + |