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backend/drm: Add pixel blend mode properties

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This commit is contained in:
YaoBing Xiao 2026-03-26 10:07:27 +08:00
parent 413664e0b0
commit b09160aa3e
6 changed files with 22 additions and 1 deletions
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7
backend/drm/libliftoff.c
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@ -159,6 +159,10 @@ static bool set_plane_props(struct wlr_drm_plane *plane,
}
// The src_* properties are in 16.16 fixed point
enum wlr_drm_pixel_blend_mode blend_mode = fb->has_alpha ?
WLR_DRM_BLEND_PREMULTI : WLR_DRM_BLEND_PIXEL_NONE;
bool set_blend_mode = plane->props.pixel_blend_mode == 0 ||
liftoff_layer_set_property(layer, "pixel blend mode", blend_mode) == 0;
return liftoff_layer_set_property(layer, "zpos", zpos) == 0 &&
liftoff_layer_set_property(layer, "SRC_X", src_box->x * (1 << 16)) == 0 &&
liftoff_layer_set_property(layer, "SRC_Y", src_box->y * (1 << 16)) == 0 &&
@ -168,7 +172,8 @@ static bool set_plane_props(struct wlr_drm_plane *plane,
liftoff_layer_set_property(layer, "CRTC_Y", dst_box->y) == 0 &&
liftoff_layer_set_property(layer, "CRTC_W", dst_box->width) == 0 &&
liftoff_layer_set_property(layer, "CRTC_H", dst_box->height) == 0 &&
liftoff_layer_set_property(layer, "FB_ID", fb->id) == 0;
liftoff_layer_set_property(layer, "FB_ID", fb->id) == 0 &&
set_blend_mode;
}
static bool disable_plane(struct wlr_drm_plane *plane) {