Add Gulp Shader Minification

Tools/Gulp/gulp-removeShaderComments.js

@@ -0,0 +1,81 @@
+'use strict';
+
+var through = require('through2');
+var PluginError = require('gulp-util').PluginError;
+var singleComment = 1;
+var multiComment = 2;
+
+function uncomment(str, opts) {
+    opts = opts || {};
+
+	var currentChar;
+	var nextChar;
+	var insideString = false;
+	var insideComment = 0;
+	var offset = 0;
+	var ret = '';
+
+    str = str.replace(/\r\n/g, '\n');
+    str = str.replace(/[ \f\t\v]+/g, ' ');
+    str = str.replace(/^\s*\n/gm, '');
+    
+	for (var i = 0; i < str.length; i++) {
+		currentChar = str[i];
+		nextChar = str[i + 1];
+
+		if (!insideComment && currentChar === '"') {
+			var escaped = str[i - 1] === '\\' && str[i - 2] !== '\\';
+			if (!escaped) {
+				insideString = !insideString;
+			}
+		}
+
+		if (insideString) {
+			continue;
+		}
+
+		if (!insideComment && currentChar + nextChar === '//') {
+			ret += str.slice(offset, i);
+			offset = i;
+			insideComment = singleComment;
+			i++;
+		} else if (insideComment === singleComment && currentChar === '\n') {
+			insideComment = 0;
+			offset = i;
+		} else if (!insideComment && currentChar + nextChar === '/*') {
+			ret += str.slice(offset, i);
+			offset = i;
+			insideComment = multiComment;
+			i++;
+			continue;
+		} else if (insideComment === multiComment && currentChar + nextChar === '*/') {
+			i++;
+			insideComment = 0;
+			offset = i + 1;
+			continue;
+		}
+	}
+
+	return ret + (insideComment ? '' : str.substr(offset));
+}
+
+function gulpUncomment(options) {
+    return main(options, uncomment);
+}
+
+function main(options, func) {
+    return through.obj(function (file, enc, cb) {
+        if (file.isNull()) {
+            cb(null, file);
+            return;
+        }
+        if (file.isStream()) {
+            cb(new PluginError("Remove Shader Comments", "Streaming not supported."));
+        }
+        file.contents = new Buffer(func(file.contents.toString(), options));
+        this.push(file);
+        return cb();
+    });
+}
+
+module.exports = gulpUncomment;

Tools/Gulp/gulpfile.js

@@ -11,6 +11,7 @@ var cleants = require('gulp-clean-ts-extends');
 var changed = require('gulp-changed');
 var runSequence = require('run-sequence');
 var replace = require("gulp-replace");
+var uncommentShader = require("./gulp-removeShaderComments");
 
 var config = require("./config.json");
 
@@ -33,7 +34,9 @@ function includeShadersName(filename) {
 
 gulp.task("includeShaders", function (cb) {
     includeShadersStream = config.includeShadersDirectories.map(function (shadersDef) {
-        return gulp.src(shadersDef.files).pipe(srcToVariable({
+        return gulp.src(shadersDef.files).
+            pipe(uncommentShader()).
+            pipe(srcToVariable({
             variableName: shadersDef.variable, asMap: true, namingCallback: includeShadersName
         }));
     });
@@ -42,7 +45,9 @@ gulp.task("includeShaders", function (cb) {
 
 gulp.task("shaders", ["includeShaders"], function (cb) {
     shadersStream = config.shadersDirectories.map(function (shadersDef) {
-        return gulp.src(shadersDef.files).pipe(srcToVariable({
+        return gulp.src(shadersDef.files).
+            pipe(uncommentShader()).
+            pipe(srcToVariable({
             variableName: shadersDef.variable, asMap: true, namingCallback: shadersName
         }));
     });