Rust

Simplify render_immediate_viewport #141

Job	Run time
android	27s
Format + check + test	55s
Check wasm32 + wasm-bindgen	2m 26s
cargo-deny aarch64-apple-darwin	46s
Check Windows	1m 45s
cargo-deny aarch64-linux-android	54s
cargo-deny i686-pc-windows-gnu	40s
cargo-deny i686-pc-windows-msvc	40s
cargo-deny i686-unknown-linux-gnu	41s
cargo-deny wasm32-unknown-unknown	40s
cargo-deny x86_64-apple-darwin	56s
cargo-deny x86_64-pc-windows-gnu	45s
cargo-deny x86_64-pc-windows-msvc	44s
cargo-deny x86_64-unknown-linux-gnu	41s
cargo-deny x86_64-unknown-linux-musl	44s
cargo-deny x86_64-unknown-redox	55s
	14m 39s

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