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  • Which parts of Graphics Pipelines are done using CPU & GPU?

    - by afriza
    Which parts of pipelines are done using CPU and which are done using GPU? Reading Wikipedia on Graphics Pipeline, maybe my question does not precisely represent what I am asking. Referring to this question, which "steps" are done in CPU and which are done in GPU? Edit: My question is more into which parts of logical high level steps needed to display terrain+3D models are using CPU/GPU instead of which functions.

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  • Using subselect to accomplish LEFT JOIN

    - by Andre
    Is is possible to accomplish the equivalent of a LEFT JOIN with subselect where multiple columns are required. Here's what I mean. SELECT m.*, (SELECT * FROM model WHERE id = m.id LIMIT 1) AS models FROM make m As it stands now doing this gives me a 'Operand should contain 1 column(s)' error. Yes I know this is possible with LEFT JOIN, but I was told it was possible with subselect to I'm curious as to how it's done.

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  • Where to put constants in Rails

    - by Sam
    I have a few constants which are arrays that I don't want to create db's for but I don't know where to store the constants without getting errors. For example CONTAINER_SIZES = [["20 foot"],["40 foot"]] Where can I store this so all models and controller have access to this?

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  • Using a join model to relate a model to itself

    - by Gabe Hollombe
    I have two models: User MentoringRelationship MentoringRelationship is a join model that has a mentor_id column and a mentee_id column (both of these reference user_ids from the users table). How can I specify a relation called 'mentees' on the User class that will return all of the users mentored by this user, using the MentoringRelationships join table? What relations do we need to declare in the User model and in the MentoringRelationship model?

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  • Mongrel not using latest deployed code, despite multiple restarts

    - by ming yeow
    What could be the potential reasons why mongrel does not use the latest code in the ~/current branch? The code changes are in the MODELs. The code changes in the CONTROLLERS TAKE EFFECT. I tried the following: god restart app deploying several times manually stopping mongrel cluster, deleting the pid files, and starting them again Anyone has similar experiences? Where could the server be potentially caching the model files?

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  • php 5.1.6 magic __toString method

    - by NachoF
    In codeigniter Im trying to use this plugin which requires I implement a toString method in my models. My toString method simply does return $this->name On my local machine with php 5.3 everything works just fine but on the production server with php 5.1.6 it shows "Object id#48" where the value of the name property of that object should appear..... I found something about the problem here but I still dont understand... How can I fix this?

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  • Pinax: Customize Signup and profile

    - by sprezzatura
    I want to gather some more information when the user signs up and also display this as part of the profile information - so that the user can edit it once he creates a login. How do i do this? I did search a lot the docs, but i did not find anything and i did not want to mess up the base code when i change the underlying models/forms.

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  • django: Changing auto_id of ModelForm based form class

    - by Meilo
    Every time I create an instance of the TestForm specified below, I have to overwrite the standard id format with auto_id=True. How can this be done once only in the form class instead? Any hints are very welcome. views.py from django.forms import ModelForm from models import Test class TestForm(ModelForm): class Meta: model = Test def test(request): form = TestForm(auto_id=True)

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  • Dynamically defined setter methods using define_method?

    - by nicosuria
    I use a lot of iterations to define convenience methods in my models, stuff like: PET_NAMES.each do |pn| define_method(pn) do ... ... end but I've never been able to dynamically define setter methods, ie: def pet_name=(name) ... end using define_method like so: define_method("pet_name=(name)") do ... end Any ideas? Thanks in advance.

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  • MVC Model State

    - by gnome
    Greetings On all my controllers I recycle the same code that wraps my models and to accesses the service layer -- and I'm tired for copy / pasting it into each controller: private IProjectService _service; public New() { _service = new ProjectService(new ModelValidation(this.ModelState)); } public New(IProjectService service) { _service = service; } Is there someplace where I can place this where all my controllers access it?

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  • Spiking neural networks

    - by lmsasu
    Hi all, which is the book one should start with in the domain of spiking neural networks? I know about Gerstner's "Spiking Neuron Models", published in 2002. Is there a more recent book, or maybe a more suitable one? I have a background in maths and artificial neural networks. If there are some good articles or overviews in this domain, also add them to the list. Thanks.

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  • Using inheritance in PostgreSQL

    - by Anton Prokofiev
    Hello, All! Is somebody have an experience using inheritance in PostgreSQL? Is it worth to use it, or better to keep hands of :)? In which situation you would use it? To be true I'm a little bit in doubt about mixing relational and OO models...

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  • Triangle count for model is doubled during render

    - by zarawesome
    I am working with the Trinigy 3d engine, and it reports models to have twice as many triangles during render than it does in the model display (let's say 4000 instead of 2000). If I render the model with an additional outline shader, it reports 6000 triangles, so it's not a simple duplication. What could be the problem?

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  • Should I use a resource loader for a SPA, or front-load everything?

    - by Shango
    I've been getting into Backbone.js lately and I'm enjoying it so far. All the examples tend to be simple to-do lists, so it's been a little difficult extrapolating code organization and file structure for a larger/more robust single page application. I've come to a crossroad: Should I use something like Yepnope.js to load models and views as I need them or, Combine and minify into fewer files and front-load it all. Some combination of both? Any advice would be appreciated!

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  • Generate 2D cross-section polygon from 3D mesh

    - by nornagon
    I'm writing a game which uses 3D models to draw a scene (top-down orthographic projection), but a 2D physics engine to calculate response to collisions, etc. I have a few 3D assets for which I'd like to be able to automatically generate a hitbox by 'slicing' the 3D mesh with the X-Y plane and creating a polygon from the resultant edges. Google is failing me on this one (and not much helpful material on SO either). Suggestions?

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  • Thin & Sinatra not taking port

    - by NekoNova
    I'm having problems settig up my application using Thin and Sinatra. I have created a development-config.ru file that contains the following settings: # This is a rack configuration file to fire up the Sinatra application. # This allows better control and configuration as we are using the modular # approach here for controlling our application. # # Extend the Ruby load path with the root of the API and the lib folder # so that we can automatically include all our own custom classes. This makes # the requiring of files a bit cleaner and easier to maintain. # This is basically what rails does as well. # We also store the root of the API in the ENV settings to ensure we have # always access to the root of the API when building paths. ENV['API_ROOT'] = File.dirname(__FILE__) $:.unshift ENV['API_ROOT'] $:.unshift File.expand_path(File.join(ENV['API_ROOT'], 'lib')) $:.unshift File.expand_path(File.join(ENV['API_ROOT'], 'db')) # Now we can require all the gems used for the entire API by simpling requiring # them here. We can also include the classes that we have defined inside the lib # folder. require 'rubygems' require 'bundler' # Run Bundler to setup our gems properly. This will install all the missing gems on # the system and ensure that the deployment environment is ready to run. Bundler.require # To make the loading easier for the application, we will now automatically load all # models that have been defined inside the lib folder. This ensures that we do not need # to load them anymore anywhere else in our application, as the models will be known to # ruby everywhere. Dir.glob(File.join(ENV['API_ROOT'], 'lib', '**', '*.rb')).each{|file| require file} # Now we will configure the Sinatra application so that we can fire up the entire API. # This requires some detailed settings like whether logging is allowed, the port to be # used and some folder locations. require 'sinatra' require 'app' set :logging, true set :dump_errors, true set :port, 3001 set :views, "#{ENV['API_ROOT']}/views" set :public_folder, "#{ENV['API_ROOT']}/public" set :environment, :test # Start up the Sinatra application with all the settings that we have defined. run App.new This is based upon the information I found on the Sinatra website. However, the problem is that I cannot get the application running on port 3001. If I use thin start -R development-config.ru it runs on port 3000. If I use rackup config-development.ru it runs on port 9696. However I never see Sinatra kick in or run over port 3000. My application looks like this: # Author : Arne De Herdt # Email : # This is the actuall application that will be running under Sinatra # to serve the requests for the billing middleware API. # We use the modular approach here to allow control when deploying # the application using Capistrano. require 'sinatra/base' require 'logger' require 'savon' require 'billcrux' class App < Sinatra::Base # This action responds to POST requests on the URI '/billcrux/register' # and is responsible for handeling registration requests with the # BillCrux payment system. # The post "/billcrux/register" do # do stuff end end Can someone tell me what I am doing wrong?

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  • Where does the creation of permissions live in Django?

    - by lazerscience
    I need to do some debugging, because the permissions for one of my models are created wrongly. So I tried to find the piece of code where Django creates the permissions upon syncdb and writes them in the database, but I haven't been successful at all; maybe I just overlooked the right lines of code, but if somebody can point me out the right module / line of code where this happens I'd be very happy!

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