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scene: ensure layer surface usable area >0
Clients may, for example, commit an exclusive zone larger than the output dimensions. Compositors must handle this gracefully, which likely requires more work on the compositor side but returning a usable area with negative width or height in wlr_scene_layer_surface_v1_configure() is nonsensical.
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@ -70,6 +70,13 @@ static void layer_surface_exclusive_zone(
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usable_area->width -= state->exclusive_zone + state->margin.right;
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break;
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}
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if (usable_area->width < 0) {
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usable_area->width = 0;
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}
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if (usable_area->height < 0) {
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usable_area->height = 0;
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}
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}
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void wlr_scene_layer_surface_v1_configure(
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