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backend/drm: avoid creating empty FB_DAMAGE_CLIPS prop

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drmModeCreatePropertyBlob cannot create zero-sized blobs, that
fails with EINVAL.

Closes: https://github.com/swaywm/wlroots/issues/3297
This commit is contained in:
Simon Ser 2021-10-29 12:54:08 +02:00
parent b2f6ff45c2
commit 83090de034
1 changed files with 1 additions and 0 deletions
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backend/drm/atomic.c
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@ -201,6 +201,7 @@ static bool atomic_crtc_commit(struct wlr_drm_connector *conn,
uint32_t fb_damage_clips = 0; uint32_t fb_damage_clips = 0;
if ((state->base->committed & WLR_OUTPUT_STATE_DAMAGE) && if ((state->base->committed & WLR_OUTPUT_STATE_DAMAGE) &&
pixman_region32_not_empty((pixman_region32_t *)&state->base->damage) &&
crtc->primary->props.fb_damage_clips != 0) { crtc->primary->props.fb_damage_clips != 0) {
int rects_len; int rects_len;
const pixman_box32_t *rects = pixman_region32_rectangles( const pixman_box32_t *rects = pixman_region32_rectangles(