gles: implement blending and write masks · kvark/blade@15f04f4

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions-rs/toolchain@v1, actions-rs/cargo@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions-rs/toolchain@v1, actions-rs/cargo@v1. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

`/Users/runner/work/blade/blade/.cargo/config` is deprecated in favor of `config.toml`

struct `ShaderParams` is never constructed

`blade-macros` (test "main") generated 1 warning

`blade` (example "init") generated 1 warning (run `cargo fix --example "init"` to apply 1 suggestion)

`blade-asset` (lib test) generated 1 warning (run `cargo fix --lib -p blade-asset --tests` to apply 1 suggestion)

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

`/Users/runner/work/blade/blade/.cargo/config` is deprecated in favor of `config.toml`

unused imports: `Entry`, `HashMap`

unused imports: `io`, `mem`, `slice`

unused import: `blade_graphics::TextureFormat as Tf`

unused variable: `source`

unused variable: `meta`

unused variable: `cooker`

unused variable: `exe_context`

unused variable: `src`

unused variable: `source`

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