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• Spark view engine and ASP.NET MVC 2 strongly Typed Html Helpers

  - by dekko

  Hi. I try to use HtmlHelper.TextBoxFor with spark view engine but view crashed with exception "Dynamic view compilation failed. 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'TextBoxFor' and no extension method 'TextBoxFor' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?)". It is my _global.spark: <use namespace="System"/> <use namespace="System.Linq"/> <use namespace="System.Text" /> <use namespace="System.Web.Mvc"/> <use namespace="System.Web.Mvc.Html"/> <use namespace="System.Web.Routing"/> <use namespace="System.Linq.Expressions" /> <use namespace="MyModels" /> In spark-view using: ${Html.TextBoxFor(m = m.UserName)}

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• Rules engine for Silverlight?

  - by frances1983

  At the moment I'm developing a web based application using Silverlight 3.0. For the business rules I'm looking for a rules engine that's both easy to use for me and my users, which will work with SL3. Is something like that available out of the box or will I need to roll my own? I've Googled and looked around the various code sites (Codeplex, Code Project etc), but didn't see anything that suits my needs. I did also have a good long look at NxBRE, but it's Rules syntax is too complex for 'dummy' users.

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• App Engine Authentication Error

  - by Suzy

  I have an app hosted by google app engine, and I am having trouble with authentication. When I login using my admin account and try to access the admin page or members pages, I just get a blank screen. I can login, and the members only menu shows when I login, but I just can't see any data from the members pages. I'm not really sure where I should start checking? My app is registered with my google apps account and I am using the only admin login that is there. Any suggestions would be appreciated.

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• Filtering by entity key name in Google App Engine on Python

  - by Bemmu

  On Google App Engine to query the data store with Python, one can use GQL or Entity.all() and then filter it. So for example these are equivalent gql = "SELECT * FROM User WHERE age >= 18" db.GqlQuery(gql) and query = User.all() query.filter("age >=", 18) Now, it's also possible to query things by key name. I know that in GQL you do it like this gql = "SELECT * FROM User WHERE __key__ >= Key('User', 'abc')" db.GqlQuery(gql) But how would you now use filter to do the same? query = User.all() query.filter("__key__ >=", ?????)

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• Datanucleus/JDO Level 2 Cache on Google App Engine

  - by Thilo

  Is it possible (and does it make sense) to use the JDO Level 2 Cache for the Google App Engine Datastore? First of all, why is there no documentation about this on Google's pages? Are there some problems with it? Do we need to set up limits to protect our memcache quota? According to DataNucleus on Stackoverflow, you can set the following persistence properties: datanucleus.cache.level2.type=javax.cache datanucleus.cache.level2.cacheName={cache name} Is that all? Can we choose any cache name? Other sources on the Internet report using different settings. Also, it seems we need to download the DataNucleus Cache support plugin. Which version would be appropriate? And do we just place it in WEB-INF/lib or does it need more setup to activate it?

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• Python and App Engine project structure

  - by Joel

  Hello, I am relatively new to python and app engine, and I just finished my first project. It consists of several *.py files (usually py file for every page on the site) and respectively temple files for each py file. In addition, I have one big PY file that has many functions that are common to a lot of pages, in I also declared the classes of db.Model (that is the datastore kinds). My question is what is the convention (if there is one) of arranging these files. If I create a model.py with the datastore classes, should it be in different package? Where should I put my template files and all of the py files that handle every page (should they be in the same directory as the one big common PY file)? I have tried to look for MVC and such implementations online but there are very few. Thanks, Joel

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• How do I stop XNA/Visual Studio from rebuilding my content project every time I build?

  - by Phil Quinn

  My group and I are working on a game in XNA 4.0 with Visual Studio 2010/2012. The main solution has 6 projects: 2 XNA game projects (1 executable/ 1 class library), 1 WPF executable for the level editor, 2 standard class libraries, and a content project. Originally, the editor and engine XNA game projects had a content reference to separate content projects. Recently, I consolidated the content projects into one to simplify asset additions. Since pushing these changes to our git repo, certain members of my group have been experiencing weird build issues. Every time they run the project, they have to re-build all of the assets. This happens regardless of whether any changes were made, even if they just run the project directly after building. I've taken a few steps to figure out why this is happening. Below is the MSBuild output set on Normal verbosity. The seemingly important part is at 4, with the line 4> Rebuilding all content because build settings have changed 1>------ Build started: Project: Engine.Core, Configuration: Debug x86 ------ 1>Build started 11/29/2012 3:24:24 AM. 1>ResolveAssemblyReferences: 1> A TargetFramework profile exclusion list will be generated. 1>EmbedXnaFrameworkRuntimeProfile: 1>Skipping target "EmbedXnaFrameworkRuntimeProfile" because all output files are up-to-date with respect to the input files. 1>GenerateTargetFrameworkMonikerAttribute: 1>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. 1>CoreCompile: 1>Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files. 1>XnaWriteCacheFile: 1>Skipping target "XnaWriteCacheFile" because all output files are up-to-date with respect to the input files. 1>_CopyOutOfDateSourceItemsToOutputDirectoryAlways: 1> Copying file from "<solution-dir>\src\Engine.Core\DialoguePrototypeTestDB.s3db" to "bin\x86\Debug\DialoguePrototypeTestDB.s3db". 1>_CopyAppConfigFile: 1>Skipping target "_CopyAppConfigFile" because all output files are up-to-date with respect to the input files. 1>CopyFilesToOutputDirectory: 1> Engine.Core -> <solution-dir>\src\Engine.Core\bin\x86\Debug\TimeSink.Engine.Core.dll 1> 1>Build succeeded. 1> 1>Time Elapsed 00:00:00.13 2>------ Build started: Project: TimeSink.Entities, Configuration: Debug x86 ------ 2>Build started 11/29/2012 3:24:25 AM. 2>ResolveAssemblyReferences: 2> A TargetFramework profile exclusion list will be generated. 2>EmbedXnaFrameworkRuntimeProfile: 2>Skipping target "EmbedXnaFrameworkRuntimeProfile" because all output files are up-to-date with respect to the input files. 2>GenerateTargetFrameworkMonikerAttribute: 2>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. 2>CoreCompile: 2>Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files. 2>XnaWriteCacheFile: 2>Skipping target "XnaWriteCacheFile" because all output files are up-to-date with respect to the input files. 2>_CopyOutOfDateSourceItemsToOutputDirectoryAlways: 2> Copying file from "<solution-dir>\src\Engine.Core\DialoguePrototypeTestDB.s3db" to "bin\x86\Debug\DialoguePrototypeTestDB.s3db". 2>CopyFilesToOutputDirectory: 2> TimeSink.Entities -> <solution-dir>\src\TimeSink.Entities\bin\x86\Debug\TimeSink.Entities.dll 2> 2>Build succeeded. 2> 2>Time Elapsed 00:00:00.11 3>------ Build started: Project: Editor (Editor\Editor), Configuration: Debug x86 ------ 4>------ Build started: Project: Engine.Game, Configuration: Debug x86 ------ 3>Build started 11/29/2012 3:24:25 AM. 3>CoreCompile: 3> All content is already up to date 3>ResolveAssemblyReferences: 3> A TargetFramework profile exclusion list will be generated. 3>EmbedXnaFrameworkRuntimeProfile: 3>Skipping target "EmbedXnaFrameworkRuntimeProfile" because all output files are up-to-date with respect to the input files. 3>GenerateTargetFrameworkMonikerAttribute: 3>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. 3>CoreCompile: 3>Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files. 3>XnaWriteCacheFile: 3>Skipping target "XnaWriteCacheFile" because all output files are up-to-date with respect to the input files. 3>_CopyOutOfDateSourceItemsToOutputDirectoryAlways: 3> Copying file from "<solution-dir>\src\Engine.Core\DialoguePrototypeTestDB.s3db" to "bin\x86\Debug\DialoguePrototypeTestDB.s3db". 3>_CopyOutOfDateNestedContentItemsToOutputDirectory: 3>Skipping target "_CopyOutOfDateNestedContentItemsToOutputDirectory" because all output files are up-to-date with respect to the input files. 3>CopyFilesToOutputDirectory: 3> Editor -> <solution-dir>\src\Editor\Editor\bin\x86\Debug\Editor.dll 3> 3>Build succeeded. 3> 3>Time Elapsed 00:00:00.39 4>Build started 11/29/2012 3:24:25 AM. 4>CoreCompile: 4> Rebuilding all content because build settings have changed 4> Building Textures\circle.png -> <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\circle.xnb 4> Importing Textures\circle.png with Microsoft.Xna.Framework.Content.Pipeline.TextureImporter 4> Processing Textures\circle.png with Microsoft.Xna.Framework.Content.Pipeline.Processors.TextureProcessor 4> Compiling <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\circle.xnb 4> Building Textures\giroux.png -> <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\giroux.xnb 4> Importing Textures\giroux.png with Microsoft.Xna.Framework.Content.Pipeline.TextureImporter 4> Processing Textures\giroux.png with Microsoft.Xna.Framework.Content.Pipeline.Processors.TextureProcessor 4> Compiling <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\giroux.xnb 4> Building Textures\Body_Neutral.png -> <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\Body_Neutral.xnb 4> Importing Textures\Body_Neutral.png with Microsoft.Xna.Framework.Content.Pipeline.TextureImporter 4> Processing Textures\Body_Neutral.png with Microsoft.Xna.Framework.Content.Pipeline.Processors.TextureProcessor 4> Compiling <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\Textures\Body_Neutral.xnb 4> Building font.spritefont -> <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\font.xnb 4> Importing font.spritefont with Microsoft.Xna.Framework.Content.Pipeline.FontDescriptionImporter 4> Processing font.spritefont with Microsoft.Xna.Framework.Content.Pipeline.Processors.FontDescriptionProcessor 4> Compiling <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Content\font.xnb 4>ResolveAssemblyReferences: 4> A TargetFramework profile exclusion list will be generated. 4>EmbedXnaFrameworkRuntimeProfile: 4>Skipping target "EmbedXnaFrameworkRuntimeProfile" because all output files are up-to-date with respect to the input files. 4>GenerateTargetFrameworkMonikerAttribute: 4>Skipping target "GenerateTargetFrameworkMonikerAttribute" because all output files are up-to-date with respect to the input files. 4>CoreCompile: 4>Skipping target "CoreCompile" because all output files are up-to-date with respect to the input files. 4>_CopyOutOfDateSourceItemsToOutputDirectoryAlways: 4> Copying file from "<solution-dir>\src\Engine.Core\DialoguePrototypeTestDB.s3db" to "bin\x86\Debug\DialoguePrototypeTestDB.s3db". 4>_CopyOutOfDateNestedContentItemsToOutputDirectory: 4>Skipping target "_CopyOutOfDateNestedContentItemsToOutputDirectory" because all output files are up-to-date with respect to the input files. 4>_CopyAppConfigFile: 4>Skipping target "_CopyAppConfigFile" because all output files are up-to-date with respect to the input files. 4>CopyFilesToOutputDirectory: 4> Engine.Game -> <solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Engine.Game.exe 4>IncrementalClean: 4> Deleting file "<solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\circle.xnb". 4> Deleting file "<solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\giroux.xnb". 4> Deleting file "<solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\Body_Neutral.xnb". 4> Deleting file "<solution-dir>\src\Engine.Game\Engine.Game\bin\x86\Debug\font.xnb". 4> 4>Build succeeded. 4> 4>Time Elapsed 00:00:01.72 ========== Build: 4 succeeded, 0 failed, 1 up-to-date, 0 skipped ========== I can't think of how build settings could change between consecutive executions. Like I said, this only happens for half our group. One member is on a 32-bit Windows 7 Prof bootcamp partition on a Mac. Everyone else, including those who don't have the issue, are running straight 64-bit Windows 7 Prof. Both have tried using VS 2010 and VS 2012. Any insight would be greatly appreciated. Also, I can post more details upon request if this isn't thorough enough.

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• Tweepy + App Engine Example OAuth Help

  - by Wasauce

  Hi I am trying to follow the Tweepy App Engine OAuth Example app in my app but am running into trouble. Here is a link to the tweepy example code: http://github.com/joshthecoder/tweepy-examples Specifically look at: http://github.com/joshthecoder/tweepy-examples/blob/master/appengine/oauth_example/handlers.py Here is the relevant snippet of my code [Ignore the spacing problems]: try: authurl = auth.get_authorization_url() request_token = auth.request_token db_user.token_key = request_token.key db_user.token_secret = request_token.secret db_user.put() except tweepy.TweepError, e: # Failed to get a request token self.generate('error.html', { 'error': e, }) return self.generate('signup.html', { 'authurl': authurl, 'request_token': request_token, 'request_token.key': request_token.key, 'request_token.secret': request_token.secret, }) As you can see my code is very similar to the example. However, when I compare the version of the request_token.key and request_token.secret that are rendered on my signup page (this is for the request_token.key and request_token.secret found in the datastore. Any guidance on what I am doing wrong here? Thanks! Reference Links:

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• How to use Pisa on Google App Engine to generate PDF from HTML\CSS

  - by systempuntoout

  I'm developing a simple GAE application that crawl some data from a given site and present it formatted in html\css. What i would like to do now is to offer the "Export to PDF feature" trasforming the formatted html\css to PDF. I've imported Reportlab Toolkit and it works good but it's not what i need since it forces me to create PDF manually like: pcanvas.drawString(10, 10, 'This is the title Blah blah blah') What i really need is a library like PISA that trasform Html\Css to PDF. Anyone has managed to succesfully intregrate and use PISA on Google App Engine? Any hints?

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• Django development targeting both the Google App Engine and Py2Exe

  - by bp

  I must hand in a mostly static database-driven website on a topic on my choice by the end of June as both a hosted version live on the internet and a stored version on a cd-rom. "Ease of launching" is one of the bulletpoints for evaluation of the project. (Yeah, I know.) I and my project mate are currently comparing various frameworks and technologies to help us deliver and deploy this as quickly and painlessly as possible. Theoretically, by using Django, I can target the Google App Engine (which I guess would provide us reliable, free-as-in-beer hosting) or the Py2Exe system + SQLLite (which I guess would make starting the website server from disk as hard as doubleclicking on an .exe file). Sounds better than what PHP and MySQL can ever hope to bring me, right? However, we need to target both Py2Exe and the GAE. How much of the differencies between these wildly different configurations are hidden by Django? What will instead require special attention and possibly specialized code on my end?

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• Jinja2 returns "None" string for Google App Engine models

  - by Brian M. Hunt

  Google App Engine models, likeso: from google.appengine.ext.db import Model class M(): name = db.StringProperty() Then in a Jinja2 template called from a Django view with an in instance of M passed in as m: The name of this M is {{ m.name }}. When m is initialized without name being set, the following is printed: The name of this M is None. The preferable and expected output (and the output when using Django templates) would be/is: The name of this M is . Do you know why this is happening, and how to get the preferred & expected output?

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• Can you recommend a .net template engine?

  - by serg10

  I am looking for a .net templating engine - something simple, lightweight, stable with not too many dependencies. All I need it for at the moment is creating templated plain text and html emails. Can anyone give me a good recommendation? If it helps at all - something like Java's Freemarker or Velocity libraries. [UPDATE] Thanks for the answers so far - much appreciated. I am really intested in recommendations or war stories from when you have used these libraries. Seems to be the best way to make a decision without trying each in turn.

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• List of header file locations for the Havok Physics Engine

  - by QAH

  Hello everyone! I am trying to integrate the Havok physics engine into my small game. It is a really nice SDK, but the header files are all over the place. Many headers are deeply nested in multiple directories. That gets confusing when you are trying to include headers for different important objects. I would like to know if there is a nice guide that will let you know where certian objects are and what headres they are in. I have already looked at Havok's documentation, and I also looked at the reference manual, but they don't give great detail as to where certain classes are located (header location). Also, is there any programs out there that can scan header files and create a list of where objects can be found? Thanks again

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• Expression Engine Template Exporting

  - by Lark

  I have a project that was developed into a Expression Engine template. I used the Core version of EE to develop this template on my local machine. Now I need to export this template/weblog so it can be loaded onto the production server so the client can begin using EE to update their site. The issue I am running into is how to export the templates plus the weblogs that go along with the template. This is my first time using EE so if you know how to accomplish this please explain it in detail. Thank you in advance.

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• Google App Engine Email

  - by Frank

  I use the following method to send email in the Google App Engine servlet : void Send_Email(String From,String To,String Message_Text) { Properties props=new Properties(); Session session=Session.getDefaultInstance(props,null); try { Message msg=new MimeMessage(session); msg.setFrom(new InternetAddress(From,"nmjava.com Admin")); msg.addRecipient(Message.RecipientType.TO,new InternetAddress(To,"Ni , Min")); msg.setSubject("Servlet Message"); msg.setText(Message_Text); Transport.send(msg); } catch (Exception ex) { // ... } } But it doesn't work, have I missed anything ? Has anyone got the email function working ?

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• What is TombstonedTaskError from App Engine's Task Queue?

  - by dbr

  That does the TombstonedTaskError mean? It is being raised while trying to add a task to the queue, from a cron-job: Traceback (most recent call last): File "/base/python_lib/versions/1/google/appengine/ext/webapp/__init__.py", line 501, in __call__ handler.get(*groups) File "/base/data/home/apps/.../tasks.py", line 132, in get ).add(queue_name = 'userfeedcheck') File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 495, in add return Queue(queue_name).add(self) File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 563, in add self.__TranslateError(e) File "/base/python_lib/versions/1/google/appengine/api/labs/taskqueue/taskqueue.py", line 619, in __TranslateError raise TombstonedTaskError(error.error_detail) TombstonedTaskError Searching the documentation only has the following to say: exception TombstonedTaskError(InvalidTaskError) Task has been tombstoned. ..which isn't particularly helpful. I couldn't find anything useful in the App Engine code either..

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• Rest Web Service with App Engine and Webapp

  - by fceruti

  I want to build a REST web service on app engine. Currently i have this: from google.appengine.ext import webapp from google.appengine.ext.webapp import util class UsersHandler(webapp.RequestHandler): def get(self, name): self.response.out.write('Hello '+ name+'!') def main(): util.run_wsgi_app(application) #Map url like /rest/users/johnsmith application = webapp.WSGIApplication([(r'/rest/users/(.*)',UsersHandler)] debug=True) if __name__ == '__main__': main() And i would like to retreive for example all my users when the path /rest/users is accessed. I Imagine I can do this by building another handler, but I want to know if is possible to do it inside of this handler.

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• Idiots guide to app engine and memcache

  - by Gareth Simpson

  I am struggling to find a good tutorial or best practices document for the use of memcache in app engine. I'm pretty happy with it on the level presented in the docs. Get an object by ID, checking memcache first, but I'm unclear on things like: If you cache a query, is there an accepted method for ensuring that the cache is cleared/updated when an object stored in that query is updated. What are the effects of using ReferenceProperties ? If a cache a Foo object with a Bar reference. Is my foo.bar in memcache too and in need of clearing down if it gets updated from some other part of my application. I don't expect answers to this here (unless you are feeling particularly generous!), but pointers to things I could read would be very gratefully received.

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• how iterate over class members java (app-engine)

  - by Alexandre H. Tremblay

  Hello, I am using the java version of the google app engine. I would like to create a function that can receive as parameters many types of objects. I would like to print out the members of the object. Each objects may be different and the function must work for all objects. Do I have to use reflection - if so, what kind of code do I need to write? public class dataOrganization { private String name; private String contact; private PostalAddress address; public dataOrganization(){} } public int getObject(Object obj){ // This function prints out the name of every // member of the object, the type and the value // In this example, it would print out "name - String - null", // "contact - String - null" and "address - PostalAddress - null" } How would I write the function getObject?

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• Restlets with Google App Engine, Java Server Pages, (JSP's), and Shiro authentication

  - by DutrowLLC

  I'm having difficulty integrating Restlets into my project. I'm using google app engine (GAE) and I also have some java server pages (JSPs) set up. The JSP's never seem to work at the same time as the Restlets, should I only be using one or the other in GAE? I'm also using Shiro (formerly Ki, formerly JSecurity) and I have been unable to get Restlets to work with Shiro's filter for authentication. Are there any issues in particular that I should be aware of? What are other people using to secure restlet apps on GAE? Is Shiro overkill if I just need authentication and some role-based authorization? Thanks so much! Chris

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• Eclipse 3.5 Missing New Web Application option after installing Google App Engine plugin

  - by stevebot

  Hey all, I just used Eclipse 3.5 to install the Google App Engine plug in. The plug in is showed as installed in the update manager. However, I am not seeing the option to "New Web Application Project" (http://code.google.com/appengine/docs/java/tools/eclipse.html). I also don't see anything Google related when I type Google into the search bar under Windows Preferences. There were no errors at the time of installation, and I was asked if I wanted to restart Eclipse, clicked yes, and it restarted accordingly. Am I missing something?

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• Facebook calling Google App Engine code using GET instead of POST

  - by Nick Gotch

  I've been developing a Facebook app using Google App Engine in Python and the pyfacebook bindings. For weeks everything worked fine but suddenly it stopped. At first I thought it was a code change so I rolled back the entire dev directory to a version I knew worked, but still it failed. It's possible a change I made to the application's settings caused the issue but, if so, I can't figure out what. I've figured out that the problem is that instead of calling the post(self) method of my Main class, Facebook is calling using a GET. Does anyone know why Facebook would use a GET method instead of a POST? It's an IFrame app. Thanks,

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• Thread safety of Matlab engine API

  - by Jeremy

  I have discovered through trial and error that the MATLAB engine function is not completely thread safe. Does anyone know the rules? Discovered through trial and error: On Windows, the connection to MATLAB is via COM, so the COM Apartment threading rules apply. All calls must occur in the same thread, but multiple connections can occur in multiple threads as long as each connection is isolated. From the answers below, it seems that this is not the case on UNIX, where calls can be made from multiple threads as long as the calls are made serially.

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• Secure login on your domain with Google App Engine

  - by mhost

  Hi, We are starting a very large web based service project. We are trying to decide what hosting environment to use. We would really like to use Google App Engine for scalability reasons and to eliminate the need to deal with servers ourselves. Secure logins/registrations is very important to us, as well as using our own domain. Our target audience is not very computer savvy. For this reason, we don't want to have the users have to sign up with OpenID as this can't be done within our site. We also do not want to force our customers to sign up with Google. As far as I can see, I am out of luck. I am hoping to have a definite answer to this question. Can I have an encrypted login to our site accessed via our domain, without having to send the customers to another site for the login (OpenID/Google). Thanks.

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• Z Order in 2D with orthographic projection and texture atlas

  - by Carbon Crystal

  I am working with a 2D game in OpenGL ES and have a question about z-order together with a texture atlas. I am using an orthographic projection because I want pixel-perfect rendering of 2D sprites, however from what I can determine the draw order is really the only thing that will determine which textures (sprites) appear above or below their neighbors. That is, the "z-index" is a function of the order in which the textures are drawn as opposed to the z coordinate on the vertex array being drawn. So.. I have a texture atlas to save binding multiple textures for each draw call but this immediately creates a problem if there is more than one atlas in play. If I need to draw textures from more than one atlas (typically the case if I have too many sprites to fit in a single atlas of a reasonable size), then I can't maintain a "draw order" across atlases unless I want to bind/unbind the atlas textures more than once.. which kinda defeats the purpose. Does anyone have any clues as to what the best approach is here? Currently I'm running under an assumption that I will have to declare different fixed "depths" (e.g foreground, background etc) in my 2D scene and assume that the z-order for sprites at a given depth is the same. Then I can have as many atlases as I need at each depth and simply draw the depths in order (along with their associated atlases) I'd love to hear what other people are doing.

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