64 lines
1.6 KiB
Markdown
64 lines
1.6 KiB
Markdown
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# glsl-token-inject-block
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[](http://github.com/badges/stability-badges)
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Injects a "block" of GLSL tokens into a shader, after any `#version`, `#extension` and `precision` statements. This will pad the new tokens with the necessary amount of newlines (but no more).
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This module ignores token `line`, `column` and `position`.
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## Example
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Your source:
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```js
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var tokenizer = require('glsl-tokenizer')
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var inject = require('glsl-token-inject-block')
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var stringify = require('glsl-token-string')
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var tokens = tokenizer(shaderInput)
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var newToken = {
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type: 'preprocessor',
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data: '#define FOOBAR'
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}
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var source = stringify(inject(tokens, newToken))
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console.log(source)
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```
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The following shader input:
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```glsl
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// some comment
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#version 300 es
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#extension SOME_EXTENSION : enable
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void main() {}
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```
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Results in the following injected define:
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```glsl
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// some comment
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#version 300 es
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#extension SOME_EXTENSION : enable
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#define FOOBAR
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void main() {}
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```
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## Usage
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[](https://www.npmjs.com/package/glsl-token-inject-block)
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#### `tokens = inject(tokens, newTokens)`
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For the given shader source (`tokens`), injects `newTokens` into them, assuming the new tokens are a "block" of code that should be placed on its own line.
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`newTokens` can be a single token object, or an array of token objects.
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Modifies `tokens` in place and returns it.
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## License
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MIT, see [LICENSE.md](http://github.com/Jam3/glsl-token-inject-block/blob/master/LICENSE.md) for details.
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