Macro render_context

macro_rules! render_context {
    { $struct:ident =>
        features: [
            $( $feature:ident ),* $(,)?
        ],
        limits: [
            $( $limit:ident => $limitval:expr ),* $(,)?
        ],
        bind_groups: [
            $( $bindgroupnum:tt => $bindgroup:ty ),* $(,)?
        ],
        pipelines: [
            $( $pipelinenum:tt => $pipeline:ty ),* $(,)?
        ] $(,)?
    } => { ... };
}