Expose GLSL version

Author: dy

lib/index.js

@@ -54,6 +54,7 @@ inherits(GLSL, Emitter)
 GLSL.prototype.optimize = true
 GLSL.prototype.preprocess = prepr
 GLSL.prototype.debug = false
+GLSL.prototype.version = '100 es'
 
 
 /**

lib/parse.js

@@ -14,7 +14,7 @@ function parse(arg) {
 
 	//convert string to tokens
 	if (typeof arg === 'string') {
-		arg = tokenize(arg, { version: '300 es' });
+		arg = tokenize(arg, { version: this.version || '100 es' });
 	}
 
 	//convert tokens to ast

readme.md

@@ -88,6 +88,7 @@ Property | Default | Description
 `uniform` | `false` | A function replacing each uniform declaration. Eg: `function (name, node) { return 'uniforms["' + name + '"]' }` will render each uniform declaration as `var <name> = uniforms["<name>"]`.
 `attribute` | `false` | Same as `uniform`, but for attribute declarations.
 `varying` | `false` | Same as `uniform`, but for varying declarations.
+`version` | `'100 es'` | GLSL shader version, one of `'300 es'` or `'100 es'`.
 `comments` | `false` | TODO: preserve comments in source code.
 `sourceMap` | `false` | TODO: include source map for the transpiled code.
 `includes` | `true` | Append stdlib includes for the result. Can be bool or an object with defined stdlib functions to include, eg. `{normalize: false, min: false}`.