From a3314e35a7eb30855c96a7dcb328f8c62d04df96 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Thu, 25 Sep 2008 14:41:06 +0000
Subject: [PATCH] Added convinience methods for parse shader source files

---
 include/osgDB/ReadFile | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/include/osgDB/ReadFile b/include/osgDB/ReadFile
index f1c78902f..0fe1d030f 100644
--- a/include/osgDB/ReadFile
+++ b/include/osgDB/ReadFile
@@ -152,6 +152,30 @@ inline osg::Shader*  readShaderFile(const std::string& filename)
     return readShaderFile(filename,Registry::instance()->getOptions());
 }
 
+/** Read an osg::Shader from file and set to specified shader type. 
+  * Return valid osg::Shader on success,
+  * return NULL on failure.
+  * Use the Options object to control cache operations and file search paths in osgDB::Registry.
+  * The osgDB::Registry is used to load the appropriate ReaderWriter plugin
+  * for the filename extension, and this plugin then handles the request
+  * to read the specified file.*/
+inline osg::Shader* readShaderFile(osg::Shader::Type type, const std::string& filename,const ReaderWriter::Options* options)
+{
+    osg::Shader* shader = readShaderFile(filename, options);
+    if (shader && type != osg::Shader::UNDEFINED) shader->setType(type);
+    return shader;
+}
+
+/** Read an osg::Shader from file and set to specified shader type 
+  * Return valid osg::Shader on success,
+  * return NULL on failure.
+  * The osgDB::Registry is used to load the appropriate ReaderWriter plugin
+  * for the filename extension, and this plugin then handles the request
+  * to read the specified file.*/
+inline osg::Shader* readShaderFile(osg::Shader::Type type, const std::string& filename)
+{
+    return readShaderFile(type, filename,Registry::instance()->getOptions());
+}
 
 /** Read an osg::Object from file. 
   * Return an assigned osg::ref_ptr on success,