Mats.

indra/llrender/llglslshader.cpp

@@ -159,6 +159,11 @@ BOOL LLGLSLShader::createShader(std::vector<LLStaticHashedString> * attributes,
 	// Create program
 	mProgramObject = glCreateProgramObjectARB();
 	
+#if LL_DARWIN
+    // work-around missing mix(vec3,vec3,bvec3)
+    mDefines["OLD_SELECT"] = "1";
+#endif
+	
 	//compile new source
 	vector< pair<string,GLenum> >::iterator fileIter = mShaderFiles.begin();
 	for ( ; fileIter != mShaderFiles.end(); fileIter++ )