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backend/drm: add support for LUMINANCE KMS property

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References: https://lore.kernel.org/dri-devel/20260528054911.1513208-1-superm1@kernel.org/
This commit is contained in:
Simon Ser 2026-05-29 16:56:16 +02:00
parent 82d2cc7c23
commit 4f32a0b76f
5 changed files with 30 additions and 1 deletions
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9
backend/drm/atomic.c
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@ -394,6 +394,11 @@ bool drm_atomic_connector_prepare(struct wlr_drm_connector_state *state, bool mo
return false;
}
double brightness = (state->base->committed & WLR_OUTPUT_STATE_BRIGHTNESS) ?
state->base->brightness : output->brightness;
uint64_t luminance = conn->luminance_bounds[0] +
round(brightness * (conn->luminance_bounds[1] - conn->luminance_bounds[0]));
state->mode_id = mode_id;
state->gamma_lut = gamma_lut;
state->fb_damage_clips = fb_damage_clips;
@ -401,6 +406,7 @@ bool drm_atomic_connector_prepare(struct wlr_drm_connector_state *state, bool mo
state->vrr_enabled = vrr_enabled;
state->colorspace = colorspace;
state->hdr_output_metadata = hdr_output_metadata;
state->luminance = luminance;
return true;
}
@ -573,6 +579,9 @@ static void atomic_connector_add(struct atomic *atom,
if (conn->props.hdr_output_metadata != 0) {
atomic_add(atom, conn->id, conn->props.hdr_output_metadata, state->hdr_output_metadata);
}
if (conn->props.luminance != 0) {
atomic_add(atom, conn->id, conn->props.luminance, state->luminance);
}
atomic_add(atom, crtc->id, crtc->props.mode_id, state->mode_id);
atomic_add(atom, crtc->id, crtc->props.active, active);
if (active) {