Debugging is a methodical process of finding and reducing the number of bugs in a game, thus making it behave as expected.

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6answers
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Why do my point lights disappear when another nearby light is above 1.85 range?

I'm making a game with a dungeon setting in Unity 3D. Many torches line the walls. I'm using a point light over each torch to simulate the flame. However, when two torches are across from each other, ...
2
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2answers
255 views

Debug data visualization best practices

I found debugging games especially hard for some obvious reasons. It's hard to monitor some internal values in dynamic, conditional breakpoints helps somehow, but only to detect some specific ...
4
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3answers
863 views

Debugging a custom content pipeline processor in XNA?

I'm working with a custom made content pipeline designed to work with the program Tiled (using the TiledLibrary found here). I am running into trouble with the MapProcessor class in the custom content ...
4
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1answer
2k views

Ogre FPS Overlay

I want to make a FPS and debugging info overlay similar to the one in the bottom of this image http://www.ogre3d.org/tikiwiki/dl1692&display but without using SDKTrays or OIS, can anyone give me a ...
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votes
1answer
1k views

xml file save/read error (making a highscore system for XNA game)

i get an error after i write player name to the file for second or third time (An unhandled exception of type 'System.InvalidOperationException' occurred in System.Xml.dll Additional information: ...
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2answers
2k views

Can't get debug spew for Direct3D9

The Direct3D9 debug runtime's debug output does not appear to be working correctly. I linked against d3dx9d.lib instead of d3dx9.lib and defined D3D_DEBUG_INFO and I also set the debug runtime on in ...
1
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2answers
407 views

XNA 4.0 problem Initializing Instanced Classes in for loop

Okay so this is kind of weird, I have some code that creates particle.cs instances public void AddParticle() { for (int i = 0; i < Density; i++) { particle = new ...
1
vote
1answer
265 views

How can I profile and debug my usage of D3D10?

I've been working on D3D 10 for about 6 months and I have accumulated a basic framework. The thing is I get frame rate spikes. Even when I have a simple cube on the screen each side with its own ...
1
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1answer
600 views

How to debug a 2D arcade game easily?

I am trying to learn pygame. In order to do that, I have downloaded one of their examples : http://rpg-world.googlecode.com/files/rpg-world-src-0.93.tar.gz And started to run it in debug mode. ...
2
votes
1answer
251 views

How to debug pyglet/opengl bus errors

I'm using pyglet for game development, and sometimes encounter "bus errors". They are not consistently repeatable, and whenever I try to do simple debugging (eg move/remove variables, etc), the errors ...
0
votes
1answer
78 views

Why might my Object Attributes become linked after refactoring?

As part of a game design class I'm taking this semester, I'm developing the basics of a game engine. I shared what I had in the GameDev chatroom, earlier, and everything was working as expected. ...
5
votes
4answers
745 views

Debugging tips? [closed]

I'm new to games programming and I'm working on a C#/XNA project. Something I'm spending a lot of time on is debugging. Obviously as games run in a loop finding the exact iteration that a bad ...
0
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1answer
178 views

Under what circumstances will a PIX 'Render' be different to the actual 'render'?

I am trying to implement dual-pass alpha sorting using Ogre material scripts, as part of my debugging attempts I want to compare two PIX captures, but when I attempt to debug a pixel in PIX, ...
7
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2answers
1k views

Scrolling Box2D DebugDraw

I'm developing a game using Box2D (javascript implementation - Box2DWeb), and I would like to know how I can pan the debug draw. I know the usual answer is - don't use debug draw, it's just for ...
1
vote
2answers
165 views

How can I automate high-level user interactions to test correctness of my game?

I am trying to automatically simulate the game experience in my programming game. I think Expect is the way to do it because it creates its own tty for the process, becoming independent process of the ...
6
votes
2answers
767 views

How could an XNA game close with no exception being thrown?

I've been messing with my game's network code recently (TCP/UDP sockets) and my game keeps shutting down with no exceptions being thrown at all. It runs fine until the disconnection of a client, so I ...
4
votes
2answers
506 views

Particle and Physics problem

This was originally a forum post so I hope you guys don't mind it being 2 questions in one. I am making a game and I got some basic physics implemented. I have 2 problems, 1 with particles being ...
4
votes
2answers
859 views

Debugging/Logging Techniques for End Users

I searched a bit, but didn't find anything particularly pertinent to my problem - so please do excuse me if I missed something! A few months back I inherited the source to a fairly-popular indie game ...
6
votes
1answer
3k views

Atmospheric Scattering

I'm trying to implement atmospheric scattering based on Sean O`Neil algorithm that was published in GPU Gems 2. But I have some trouble getting the shader to work. I've downloaded sample code of ...
15
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2answers
4k views

How can I debug shader programs?

I'm in the process of debugging GLSL vertex shaders and I can't shake the feeling that I'm doing it wrong. In general I have two strategies to make up for the lack of tracing I stuff values into a ...
6
votes
1answer
1k views

What is the best way to debug and profile a web application on an iPod in Mobile Safari? [closed]

I've built a web app that makes heavy use of JavaScript and HTML5 canvas. It's easy to debug in Chrome, but on a mobile device the developer tools are much less robust. Is there a tool or technique ...
19
votes
7answers
1k views

How do you get useful data from playtesters? [closed]

There are a few types of feedback you can get from playtesters, and I wonder how to best gather data for each of them... Crash Reports. When my C++ game crashes while someone is playing it, how do I ...
18
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9answers
2k views

Real-time Debugging Techniques

There's nothing quite like the routine of tweaking a variable, compiling code that takes a few minutes, executing the code, realizing that your tweak was in the wrong direction and repeating the ...