drm_atomic_...amage_merged(9)

💅 drm_atomic_...amage_merged(9) 💅

okay so bestie, you've stumbled into the Kernel API Manual and honestly? iconic. this is <rainbow>drm_atomic_...amage_merged(9)</rainbow> and it's about merging plane damage into one rectangle. yes, that's the whole vibe. let's get into it 🫶

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✨ NAME ✨

drm_atomic_helper_damage_merged — merged plane damage. that's it, that's the name, slay.

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🌸 SYNOPSIS 🌸

bool drm_atomic_helper_damage_merged (const struct drm_plane_state
*old_state , const struct drm_plane_state *state , struct drm_rect *rect
);

look at that signature. it's giving takes three things, returns a bool. we love a return type that just says yes or no, no cap 💅

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🎀 ARGUMENTS 🎀

• old_state — the old plane state, used for validation. like the ex you check against before committing to the new one 😭
• state — the plane state you're iterating the damage clips from. this is the main character here, fr fr 👑
• rect — this one's an output, bestie: it returns the merged damage rectangle. so it goes in empty-ish and comes back with the goods ✨

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🦋 DESCRIPTION 🦋

so what does it actually do? it merges any valid plane damage clips into one rectangle and hands it back to you in rect. one rect. merged. clean. immaculate. 🌈

for the deets, go look at drm_atomic_helper_damage_iter_init and drm_atomic_helper_damage_iter_next — those are the iterating besties doing the legwork behind the scenes 🧚

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⭐ RETURN ⭐

• True if there is valid plane damage 💖
• false otherwise 🙈

literally that simple. vibe check passed.

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/gpu/drm/drm_damage_helper.c
• drm_atomic_helper_check_plane_damage(9)
• drm_atomic_helper_dirtyfb(9)
• drm_atomic_helper_damage_iter_init(9)
• drm_atomic_helper_damage_iter_next(9)

go read those, iykyk 💜

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and that's the whole page, bestie! this one lives in ./drivers/gpu/drm and it's dated October 2026, so jot that down in your notes 📝 — drm_atomic_...amage_merged(9), Kernel API Manual, done and dusted. mwah 🍓💅